1. The UV coating for temporary protection of the tin plate comprises a UV coating formula and UV coating treatment process detection, and is characterized in that: the UV coating formula comprises the following components in parts by mass:

40-50 parts of alicyclic epoxy resin

2-3 parts of cationic photoinitiator

5-10 parts of o-cresol formaldehyde modified epoxy acrylate UV resin

0.5-1 part of photoinitiator TPO

1844-6 parts of photoinitiator

5-10 parts of fluorine-containing acrylate UV diluent

10-15 parts of 2-functional fluorine-silicon modified acrylate UV resin

5-10 parts of 3-functional fluorine-containing acrylate UV resin.

2. The UV paint for temporary protection of tin plate according to claim 1, wherein: the cationic photoinitiator initiates alicyclic epoxy resin to carry out cationic polymerization, and the formed polymer has a compact cross-linking structure.

3. The UV paint for temporary protection of tin plate according to claim 1, wherein: the o-cresol formaldehyde modified epoxy acrylate UV resin, the 2 functional fluorine silicon modified acrylate UV resin and the 3 functional fluorine-containing acrylate UV resin are subjected to free radical polymerization by a photoinitiator TPO and an initiator 184 to form a compact cross-linked structure.

4. The UV paint for temporary protection of tin plate according to claim 1, wherein: the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate.

5. The UV paint for temporary protection of tin plate according to claim 1, wherein: the o-cresol formaldehyde modified epoxy acrylate UV resin contains an o-cresol formaldehyde modified epoxy group, and the fluorine-containing acrylate UV diluent, the 2-functional fluorosilicone modified acrylate UV resin and the 3-functional fluorine-containing acrylate UV resin all contain fluorine-containing groups.

6. The UV paint for temporary protection of tin plate according to claim 1, wherein: the molecular weight of the 2-functional fluorine-silicon modified acrylate UV resin is 3000g/mol 2000-, and the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 2000-2000 g/mol.

7. The UV paint for temporary protection of tin plate according to claim 1, wherein: the specific steps of the UV coating treatment process detection are as follows:

step S1: firstly, coating the UV coating on a metal plate substrate area which does not need galvanizing, standing and curing to form a protective coating;

step S2: sequentially soaking the base material coated with the protective coating into degreasing solution with the pH value of 8, acid with the pH value of 2 and alkali solution with the pH value of 9-10, and then continuously heating the base material coated with the protective coating in an environment at 260 ℃;

step S3: the substrate in step S2 was immersed in tap water at 80 ℃ and the coating peel time was recorded.

8. The UV paint for temporary protection of tin plate according to claim 7, wherein: the immersion time in the degreasing solution with the pH value of 8 in the step S2 is 1 minute, the immersion time in the acid with the pH value of 2 in the step S2 is 1 minute, the immersion time in the alkali solution with the pH value of 9-10 in the step S2 is 1 minute, and the ambient heating time at 260 ℃ in the step S2 is 3 minutes.

9. The UV paint for temporary protection of tin plate according to claim 7, wherein: the step S3 is performed only after all the processes in the step S2 are completed, and the protective coating layer is not peeled off, deformed, or embrittled.

Background

UV coating refers to a coating that is cured using UV radiation. UV curable coatings can be applied to ink printing and exposed to UV radiation. Its solid content can be up to 100%, so that it has no volatile component and does not contaminate environment, and its high solid content also can make it be used for coating very thin film, UV-curable coating material also can be used for coating glass and plastics, wood and aluminium material, etc.

However, in the prior art, some local areas of the metal plate do not need to be galvanized in the process of tinning, a protective coating is needed to play a role in temporary protection, the protective coating is generally coated on the areas which do not need to be galvanized at first, and a protective coating is formed after curing, but the coating does not fall off, deform or become brittle under the conditions of degreasing solution, acid, alkali solution and high temperature in sequence in the follow-up process, and finally the coating can be completely separated from the substrate within 60 seconds in 80 ℃ tap water, so that the tinning of the metal plate can be smoothly realized.

Disclosure of Invention

The invention aims to provide a UV coating for temporary protection of a tin plate, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the UV coating for temporary protection of the tin plate comprises a UV coating formula and UV coating treatment process detection, wherein the UV coating formula comprises the following components in parts by weight:

40-50 parts of alicyclic epoxy resin

2-3 parts of cationic photoinitiator

5-10 parts of o-cresol formaldehyde modified epoxy acrylate UV resin

0.5-1 part of photoinitiator TPO

1844-6 parts of photoinitiator

5-10 parts of fluorine-containing acrylate UV diluent

10-15 parts of 2-functional fluorine-silicon modified acrylate UV resin

5-10 parts of 3-functional fluorine-containing acrylate UV resin.

As a further scheme of the invention: the cationic photoinitiator initiates alicyclic epoxy resin to carry out cationic polymerization, and the formed polymer has a compact cross-linking structure.

As a still further scheme of the invention: the o-cresol formaldehyde modified epoxy acrylate UV resin, the 2 functional fluorine silicon modified acrylate UV resin and the 3 functional fluorine-containing acrylate UV resin are subjected to free radical polymerization by a photoinitiator TPO and an initiator 184 to form a compact cross-linked structure.

As a still further scheme of the invention: the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate.

As a still further scheme of the invention: the o-cresol formaldehyde modified epoxy acrylate UV resin contains an o-cresol formaldehyde modified epoxy group, and the fluorine-containing acrylate UV diluent, the 2-functional fluorosilicone modified acrylate UV resin and the 3-functional fluorine-containing acrylate UV resin all contain fluorine-containing groups.

As a still further scheme of the invention: the molecular weight of the 2-functional fluorine-silicon modified acrylate UV resin is 3000g/mol 2000-, and the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 2000-2000 g/mol.

As a still further scheme of the invention: the specific steps of the UV coating treatment process detection are as follows:

step S1: firstly, coating the UV coating on a metal plate substrate area which does not need galvanizing, standing and curing to form a protective coating;

step S2: sequentially soaking the base material coated with the protective coating into degreasing solution with the pH value of 8, acid with the pH value of 2 and alkali solution with the pH value of 9-10, and then continuously heating the base material coated with the protective coating in an environment at 260 ℃;

step S3: the substrate in step S2 was immersed in tap water at 80 ℃ and the coating peel time was recorded.

As a still further scheme of the invention: the immersion time in the degreasing solution with the pH value of 8 in the step S2 is 1 minute, the immersion time in the acid with the pH value of 2 in the step S2 is 1 minute, the immersion time in the alkali solution with the pH value of 9-10 in the step S2 is 1 minute, and the ambient heating time at 260 ℃ in the step S2 is 3 minutes.

As a still further scheme of the invention: the step S3 is performed only after all the processes in the step S2 are completed, and the protective coating layer is not peeled off, deformed, or embrittled.

Compared with the prior art, the invention has the beneficial effects that: in the invention, a cationic photoinitiator initiates alicyclic epoxy resin to carry out cationic polymerization, the formed polymer has a compact cross-linked structure, the adhesion force of a coating on metal can be improved, and the functions of acid and alkali resistance and high temperature resistance can be achieved, o-cresol formaldehyde modified epoxy acrylate UV resin, 2 functional fluorosilicone modified acrylate UV resin and 3 functional fluorine-containing acrylate UV resin are subjected to free radical polymerization through photoinitiator TPO and photoinitiator 184 to form the compact cross-linked structure, the adhesion force of the coating on the metal is further improved, the functions of acid and alkali resistance and high temperature resistance are further increased, the o-cresol formaldehyde modified epoxy group and fluorine-containing group can achieve the functions of acid and alkali resistance and high temperature resistance, the affinity with water is low, the membrane can be removed in water at 80 ℃ within 60s, and the function of easy separation is achieved in the process that the water bubbles at 80 ℃ are separated from a base material finally, the UV coating has the characteristics of acid and alkali resistance, high temperature resistance, good metal adhesion and capability of being quickly separated from the base material in hot water.

Drawings

FIG. 1 is a graph of data on the time to peel off of the coating of each example in a UV coating for temporary protection of tin-plated plates.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In embodiment 1 of the invention, the UV coating for temporary protection of the tin plate comprises a UV coating formula and UV coating treatment process detection, wherein the UV coating formula comprises the following components in parts by weight:

40 parts of alicyclic epoxy resin

Cationic photoinitiator 3 parts

5 parts of o-cresol formaldehyde modified epoxy acrylate UV resin

Photoinitiator TPO 1 part

1846 parts of photoinitiator

Fluorine-containing acrylate UV diluent 5 parts

10 parts of 2-functional fluorine-silicon modified acrylate UV resin

5 parts of 3-functional fluorine-containing acrylate UV resin.

The cationic photoinitiator initiates alicyclic epoxy resin to carry out cationic polymerization, and the formed polymer has a compact cross-linking structure; carrying out free radical polymerization on o-cresol formaldehyde modified epoxy acrylate UV resin, 2 functional fluorine silicon modified acrylate UV resin and 3 functional fluorine-containing acrylate UV resin by using a photoinitiator TPO and an initiator 184 to form a compact cross-linked structure; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the o-cresol formaldehyde modified epoxy acrylate UV resin contains an o-cresol formaldehyde modified epoxy group, and the fluorine-containing acrylate UV diluent, the 2-functional fluorosilicone modified acrylate UV resin and the 3-functional fluorine-containing acrylate UV resin all contain fluorine-containing groups; the molecular weight of the 2-functional fluorine-silicon modified acrylate UV resin is 3000g/mol, and the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 2000 g/mol.

The specific steps of the UV coating treatment process detection are as follows:

step S1: firstly, coating the UV coating on a metal plate substrate area which does not need galvanizing, standing and curing to form a protective coating;

step S2: sequentially soaking the base material coated with the protective coating into degreasing solution with the pH value of 8, acid with the pH value of 2 and alkali solution with the pH value of 9-10, and then continuously heating the base material coated with the protective coating in an environment at 260 ℃;

step S3: the substrate in step S2 was immersed in tap water at 80 ℃ and the coating peel time was recorded.

Soaking in degreasing solution with the pH value of 8 for 1 minute in the step S2, soaking in acid with the pH value of 2 for 1 minute in the step S2, soaking in alkali solution with the pH value of 9-10 for 1 minute in the step S2, and placing in an environment at 260 ℃ for heating for 3 minutes in the step S2; step S3 is performed after all steps in step S2 are completed, and the protective coating layer is not peeled off, deformed, or embrittled.

In embodiment 2 of the invention, the UV coating for temporary protection of the tin plate comprises a UV coating formula and UV coating treatment process detection, wherein the UV coating formula comprises the following components in parts by weight:

alicyclic epoxy resin 45 parts

Cationic photoinitiator 3 parts

5 parts of o-cresol formaldehyde modified epoxy acrylate UV resin

Photoinitiator TPO 1 part

1846 parts of photoinitiator

Fluorine-containing acrylate UV diluent 5 parts

10 parts of 2-functional fluorine-silicon modified acrylate UV resin

5 parts of 3-functional fluorine-containing acrylate UV resin.

The cationic photoinitiator initiates alicyclic epoxy resin to carry out cationic polymerization, and the formed polymer has a compact cross-linking structure; carrying out free radical polymerization on o-cresol formaldehyde modified epoxy acrylate UV resin, 2 functional fluorine silicon modified acrylate UV resin and 3 functional fluorine-containing acrylate UV resin by using a photoinitiator TPO and an initiator 184 to form a compact cross-linked structure; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the o-cresol formaldehyde modified epoxy acrylate UV resin contains an o-cresol formaldehyde modified epoxy group, and the fluorine-containing acrylate UV diluent, the 2-functional fluorosilicone modified acrylate UV resin and the 3-functional fluorine-containing acrylate UV resin all contain fluorine-containing groups; the molecular weight of the 2-functional fluorine-silicon modified acrylate UV resin is 3000g/mol, and the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 2000 g/mol.

The specific steps of the UV coating treatment process detection are as follows:

step S1: firstly, coating the UV coating on a metal plate substrate area which does not need galvanizing, standing and curing to form a protective coating;

step S2: sequentially soaking the base material coated with the protective coating into degreasing solution with the pH value of 8, acid with the pH value of 2 and alkali solution with the pH value of 9-10, and then continuously heating the base material coated with the protective coating in an environment at 260 ℃;

step S3: the substrate in step S2 was immersed in tap water at 80 ℃ and the coating peel time was recorded.

Soaking in degreasing solution with the pH value of 8 for 1 minute in the step S2, soaking in acid with the pH value of 2 for 1 minute in the step S2, soaking in alkali solution with the pH value of 9-10 for 1 minute in the step S2, and placing in an environment at 260 ℃ for heating for 3 minutes in the step S2; step S3 is performed after all steps in step S2 are completed, and the protective coating layer is not peeled off, deformed, or embrittled.

In embodiment 3 of the invention, the UV coating for temporary protection of the tin plate comprises a UV coating formula and UV coating treatment process detection, wherein the UV coating formula comprises the following components in parts by weight:

alicyclic epoxy resin 50 parts

Cationic photoinitiator 3 parts

5 parts of o-cresol formaldehyde modified epoxy acrylate UV resin

Photoinitiator TPO 1 part

1846 parts of photoinitiator

Fluorine-containing acrylate UV diluent 5 parts

10 parts of 2-functional fluorine-silicon modified acrylate UV resin

5 parts of 3-functional fluorine-containing acrylate UV resin.

The cationic photoinitiator initiates alicyclic epoxy resin to carry out cationic polymerization, and the formed polymer has a compact cross-linking structure; carrying out free radical polymerization on o-cresol formaldehyde modified epoxy acrylate UV resin, 2 functional fluorine silicon modified acrylate UV resin and 3 functional fluorine-containing acrylate UV resin by using a photoinitiator TPO and an initiator 184 to form a compact cross-linked structure; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the o-cresol formaldehyde modified epoxy acrylate UV resin contains an o-cresol formaldehyde modified epoxy group, and the fluorine-containing acrylate UV diluent, the 2-functional fluorosilicone modified acrylate UV resin and the 3-functional fluorine-containing acrylate UV resin all contain fluorine-containing groups; the molecular weight of the 2-functional fluorine-silicon modified acrylate UV resin is 3000g/mol, and the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 2000 g/mol.

The specific steps of the UV coating treatment process detection are as follows:

step S1: firstly, coating the UV coating on a metal plate substrate area which does not need galvanizing, standing and curing to form a protective coating;

step S2: sequentially soaking the base material coated with the protective coating into degreasing solution with the pH value of 8, acid with the pH value of 2 and alkali solution with the pH value of 9-10, and then continuously heating the base material coated with the protective coating in an environment at 260 ℃;

step S3: the substrate in step S2 was immersed in tap water at 80 ℃ and the coating peel time was recorded.

Soaking in degreasing solution with the pH value of 8 for 1 minute in the step S2, soaking in acid with the pH value of 2 for 1 minute in the step S2, soaking in alkali solution with the pH value of 9-10 for 1 minute in the step S2, and placing in an environment at 260 ℃ for heating for 3 minutes in the step S2; step S3 is performed after all steps in step S2 are completed, and the protective coating layer is not peeled off, deformed, or embrittled.

In embodiment 4 of the invention, the UV coating for temporary protection of the tin plate comprises a UV coating formula and UV coating treatment process detection, wherein the UV coating formula comprises the following components in parts by weight:

40 parts of alicyclic epoxy resin

Cationic photoinitiator 3 parts

10 parts of o-cresol formaldehyde modified epoxy acrylate UV resin

Photoinitiator TPO 1 part

1846 parts of photoinitiator

Fluorine-containing acrylate UV diluent 5 parts

10 parts of 2-functional fluorine-silicon modified acrylate UV resin

5 parts of 3-functional fluorine-containing acrylate UV resin.

The cationic photoinitiator initiates alicyclic epoxy resin to carry out cationic polymerization, and the formed polymer has a compact cross-linking structure; carrying out free radical polymerization on o-cresol formaldehyde modified epoxy acrylate UV resin, 2 functional fluorine silicon modified acrylate UV resin and 3 functional fluorine-containing acrylate UV resin by using a photoinitiator TPO and an initiator 184 to form a compact cross-linked structure; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the o-cresol formaldehyde modified epoxy acrylate UV resin contains an o-cresol formaldehyde modified epoxy group, and the fluorine-containing acrylate UV diluent, the 2-functional fluorosilicone modified acrylate UV resin and the 3-functional fluorine-containing acrylate UV resin all contain fluorine-containing groups; the molecular weight of the 2-functional fluorine-silicon modified acrylate UV resin is 3000g/mol, and the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 2000 g/mol.

The specific steps of the UV coating treatment process detection are as follows:

step S1: firstly, coating the UV coating on a metal plate substrate area which does not need galvanizing, standing and curing to form a protective coating;

step S2: sequentially soaking the base material coated with the protective coating into degreasing solution with the pH value of 8, acid with the pH value of 2 and alkali solution with the pH value of 9-10, and then continuously heating the base material coated with the protective coating in an environment at 260 ℃;

step S3: the substrate in step S2 was immersed in tap water at 80 ℃ and the coating peel time was recorded.

Soaking in degreasing solution with the pH value of 8 for 1 minute in the step S2, soaking in acid with the pH value of 2 for 1 minute in the step S2, soaking in alkali solution with the pH value of 9-10 for 1 minute in the step S2, and placing in an environment at 260 ℃ for heating for 3 minutes in the step S2; step S3 is performed after all steps in step S2 are completed, and the protective coating layer is not peeled off, deformed, or embrittled.

In embodiment 5 of the invention, the UV coating for temporary protection of the tin plate comprises a UV coating formula and UV coating treatment process detection, wherein the UV coating formula comprises the following components in parts by weight:

40 parts of alicyclic epoxy resin

Cationic photoinitiator 3 parts

5 parts of o-cresol formaldehyde modified epoxy acrylate UV resin

Photoinitiator TPO 1 part

1846 parts of photoinitiator

10 portions of fluorine-containing acrylate UV diluent

10 parts of 2-functional fluorine-silicon modified acrylate UV resin

5 parts of 3-functional fluorine-containing acrylate UV resin.

The cationic photoinitiator initiates alicyclic epoxy resin to carry out cationic polymerization, and the formed polymer has a compact cross-linking structure; carrying out free radical polymerization on o-cresol formaldehyde modified epoxy acrylate UV resin, 2 functional fluorine silicon modified acrylate UV resin and 3 functional fluorine-containing acrylate UV resin by using a photoinitiator TPO and an initiator 184 to form a compact cross-linked structure; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the o-cresol formaldehyde modified epoxy acrylate UV resin contains an o-cresol formaldehyde modified epoxy group, and the fluorine-containing acrylate UV diluent, the 2-functional fluorosilicone modified acrylate UV resin and the 3-functional fluorine-containing acrylate UV resin all contain fluorine-containing groups; the molecular weight of the 2-functional fluorine-silicon modified acrylate UV resin is 3000g/mol, and the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 2000 g/mol.

The specific steps of the UV coating treatment process detection are as follows:

step S1: firstly, coating the UV coating on a metal plate substrate area which does not need galvanizing, standing and curing to form a protective coating;

step S2: sequentially soaking the base material coated with the protective coating into degreasing solution with the pH value of 8, acid with the pH value of 2 and alkali solution with the pH value of 9-10, and then continuously heating the base material coated with the protective coating in an environment at 260 ℃;

step S3: the substrate in step S2 was immersed in tap water at 80 ℃ and the coating peel time was recorded.

Soaking in degreasing solution with the pH value of 8 for 1 minute in the step S2, soaking in acid with the pH value of 2 for 1 minute in the step S2, soaking in alkali solution with the pH value of 9-10 for 1 minute in the step S2, and placing in an environment at 260 ℃ for heating for 3 minutes in the step S2; step S3 is performed after all steps in step S2 are completed, and the protective coating layer is not peeled off, deformed, or embrittled.

In embodiment 6 of the invention, the UV coating for temporary protection of the tin plate comprises a UV coating formula and UV coating treatment process detection, wherein the UV coating formula comprises the following components in parts by weight:

40 parts of alicyclic epoxy resin

Cationic photoinitiator 3 parts

5 parts of o-cresol formaldehyde modified epoxy acrylate UV resin

Photoinitiator TPO 1 part

1846 parts of photoinitiator

Fluorine-containing acrylate UV diluent 5 parts

15 parts of 2-functional fluorine-silicon modified acrylate UV resin

5 parts of 3-functional fluorine-containing acrylate UV resin.

The cationic photoinitiator initiates alicyclic epoxy resin to carry out cationic polymerization, and the formed polymer has a compact cross-linking structure; carrying out free radical polymerization on o-cresol formaldehyde modified epoxy acrylate UV resin, 2 functional fluorine silicon modified acrylate UV resin and 3 functional fluorine-containing acrylate UV resin by using a photoinitiator TPO and an initiator 184 to form a compact cross-linked structure; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the o-cresol formaldehyde modified epoxy acrylate UV resin contains an o-cresol formaldehyde modified epoxy group, and the fluorine-containing acrylate UV diluent, the 2-functional fluorosilicone modified acrylate UV resin and the 3-functional fluorine-containing acrylate UV resin all contain fluorine-containing groups; the molecular weight of the 2-functional fluorine-silicon modified acrylate UV resin is 3000g/mol, and the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 2000 g/mol.

The specific steps of the UV coating treatment process detection are as follows:

step S1: firstly, coating the UV coating on a metal plate substrate area which does not need galvanizing, standing and curing to form a protective coating;

step S2: sequentially soaking the base material coated with the protective coating into degreasing solution with the pH value of 8, acid with the pH value of 2 and alkali solution with the pH value of 9-10, and then continuously heating the base material coated with the protective coating in an environment at 260 ℃;

step S3: the substrate in step S2 was immersed in tap water at 80 ℃ and the coating peel time was recorded.

Soaking in degreasing solution with the pH value of 8 for 1 minute in the step S2, soaking in acid with the pH value of 2 for 1 minute in the step S2, soaking in alkali solution with the pH value of 9-10 for 1 minute in the step S2, and placing in an environment at 260 ℃ for heating for 3 minutes in the step S2; step S3 is performed after all steps in step S2 are completed, and the protective coating layer is not peeled off, deformed, or embrittled.

In embodiment 7 of the invention, the UV coating for temporary protection of the tin plate comprises a UV coating formula and UV coating treatment process detection, wherein the UV coating formula comprises the following components in parts by weight:

40 parts of alicyclic epoxy resin

Cationic photoinitiator 3 parts

5 parts of o-cresol formaldehyde modified epoxy acrylate UV resin

Photoinitiator TPO 1 part

1846 parts of photoinitiator

Fluorine-containing acrylate UV diluent 5 parts

10 parts of 2-functional fluorine-silicon modified acrylate UV resin

10 parts of 3-functional fluorine-containing acrylate UV resin.

The cationic photoinitiator initiates alicyclic epoxy resin to carry out cationic polymerization, and the formed polymer has a compact cross-linking structure; carrying out free radical polymerization on o-cresol formaldehyde modified epoxy acrylate UV resin, 2 functional fluorine silicon modified acrylate UV resin and 3 functional fluorine-containing acrylate UV resin by using a photoinitiator TPO and an initiator 184 to form a compact cross-linked structure; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the o-cresol formaldehyde modified epoxy acrylate UV resin contains an o-cresol formaldehyde modified epoxy group, and the fluorine-containing acrylate UV diluent, the 2-functional fluorosilicone modified acrylate UV resin and the 3-functional fluorine-containing acrylate UV resin all contain fluorine-containing groups; the molecular weight of the 2-functional fluorine-silicon modified acrylate UV resin is 3000g/mol, and the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 2000 g/mol.

The specific steps of the UV coating treatment process detection are as follows:

step S1: firstly, coating the UV coating on a metal plate substrate area which does not need galvanizing, standing and curing to form a protective coating;

step S2: sequentially soaking the base material coated with the protective coating into degreasing solution with the pH value of 8, acid with the pH value of 2 and alkali solution with the pH value of 9-10, and then continuously heating the base material coated with the protective coating in an environment at 260 ℃;

step S3: the substrate in step S2 was immersed in tap water at 80 ℃ and the coating peel time was recorded.

Soaking in degreasing solution with the pH value of 8 for 1 minute in the step S2, soaking in acid with the pH value of 2 for 1 minute in the step S2, soaking in alkali solution with the pH value of 9-10 for 1 minute in the step S2, and placing in an environment at 260 ℃ for heating for 3 minutes in the step S2; step S3 is performed after all steps in step S2 are completed, and the protective coating layer is not peeled off, deformed, or embrittled.

As can be seen from table 1 and fig. 1, the cationic photoinitiator initiates the alicyclic epoxy resin to perform cationic polymerization, and the formed polymer has a compact cross-linked structure, so that not only can the adhesion of the coating on metal be improved, but also the effects of acid and alkali resistance and high temperature resistance can be achieved; the o-cresol formaldehyde modified epoxy acrylate UV resin, the 2 functional fluorosilicone modified acrylate UV resin and the 3 functional fluorine-containing acrylate UV resin are subjected to free radical polymerization through a photoinitiator TPO and a photoinitiator 184 to form a compact cross-linked structure, so that the adhesive force of the coating on metal is further improved, and the acid-base resistance and high temperature resistance effects are further increased; the o-cresol formaldehyde modified epoxy group and the fluorine-containing group can play roles in acid and alkali resistance and high temperature resistance, have low affinity with water, realize demoulding within 60s in water at 80 ℃, and play a role in easy separation in the final 80 ℃ blister separation process from the base material; namely, the UV coating has the characteristics of acid and alkali resistance, high temperature resistance and good metal adhesion, and can be quickly separated from the base material in hot water.

TABLE 1

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.