1. The high-voltage-resistant high-temperature-resistant UV coating for the lithium battery aluminum profile comprises a UV coating formula and a UV coating performance experiment, and is characterized in that: the UV coating formula comprises the following components in parts by mass:

4.5-7 parts of photoinitiator

10-15 parts of fluorine-containing acrylate UV diluent

20-30 parts of 6-functional fluorine-silicon modified acrylate UV resin

30-40 parts of o-cresol formaldehyde modified epoxy acrylate UV resin

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

2. The lithium battery aluminum profile high-voltage-resistant high-temperature-resistant UV coating as claimed in claim 1, is characterized in that: the photoinitiator is a mixture of photoinitiator TPO and photoinitiator 184, the part of the photoinitiator TPO is 0.5-1, and the part of the photoinitiator 184 is 4-6.

3. The lithium battery aluminum profile high-voltage-resistant high-temperature-resistant UV coating as claimed in claim 1, is characterized in that: the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate.

4. The lithium battery aluminum profile high-voltage-resistant high-temperature-resistant UV coating as claimed in claim 1, is characterized in that: the molecular weight of the 6-functional fluorine-silicon modified acrylate UV resin is 3000-3500 g/mol.

5. The lithium battery aluminum profile high-voltage-resistant high-temperature-resistant UV coating as claimed in claim 1, is characterized in that: the molecular weight of the o-cresol formaldehyde modified epoxy acrylate UV resin is 1000-1500 g/mol.

6. The lithium battery aluminum profile high-voltage-resistant high-temperature-resistant UV coating as claimed in claim 1, is characterized in that: the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 1500-2000 g/mol.

7. The lithium battery aluminum profile high-voltage-resistant high-temperature-resistant UV coating as claimed in claim 1, is characterized in that: the UV coating performance test comprises a voltage breakdown test and a high-temperature softening test respectively.

8. The lithium battery aluminum profile high-voltage-resistant high-temperature-resistant UV coating as claimed in claim 7, is characterized in that: the voltage breakdown test comprises the following specific steps:

step 1: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step 2: dividing a plurality of equal-area test areas in a coating area for coating the UV coating on the surface of the aluminum plate;

and step 3: and respectively carrying out a voltage breakdown test in each test area, wherein the test starting voltage is 4000V, the test ending voltage is 7000V, the test time is 10min, and the increment is 500V.

9. The lithium battery aluminum profile high-voltage-resistant high-temperature-resistant UV coating as claimed in claim 7, is characterized in that: the specific steps of the high temperature softening test are as follows:

the method comprises the following steps: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step two: the high temperature softening test was performed on the coated area of the aluminum sheet surface coated with the UV coating, with a test start temperature of 50 c, a test stop temperature of 300 c, increments of 50 c, and a test time of 72 hours per temperature step.

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, the application prospect of the vehicle-mounted lithium battery is wide, the aluminum plate protective layer which plays a role in protecting the outer side of the vehicle-mounted lithium ion battery power module needs to play a role in safety protection, and when the lithium battery is in dangerous situations such as leakage and combustion, if the aluminum plate protective layer is not protected, the aluminum plate protective layer is broken and softened to cause danger.

Disclosure of Invention

The invention aims to provide a high-voltage-resistant high-temperature-resistant UV coating for a lithium battery aluminum profile, which is used for solving the problems in the background technology.

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

the high-voltage-resistant high-temperature-resistant UV coating for the lithium battery aluminum profile comprises a UV coating formula and a UV coating performance experiment, wherein the UV coating formula comprises the following components in parts by mass:

4.5-7 parts of photoinitiator

10-15 parts of fluorine-containing acrylate UV diluent

20-30 parts of 6-functional fluorine-silicon modified acrylate UV resin

30-40 parts of o-cresol formaldehyde modified epoxy acrylate UV resin

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

As a further scheme of the invention: the photoinitiator is a mixture of photoinitiator TPO and photoinitiator 184, the part of the photoinitiator TPO is 0.5-1, and the part of the photoinitiator 184 is 4-6.

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 molecular weight of the 6-functional fluorine-silicon modified acrylate UV resin is 3000-3500 g/mol.

As a still further scheme of the invention: the molecular weight of the o-cresol formaldehyde modified epoxy acrylate UV resin is 1000-1500 g/mol.

As a still further scheme of the invention: the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 1500-2000 g/mol.

As a still further scheme of the invention: the UV coating performance test comprises a voltage breakdown test and a high-temperature softening test respectively.

As a still further scheme of the invention: the voltage breakdown test comprises the following specific steps:

step 1: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step 2: dividing a plurality of equal-area test areas in a coating area for coating the UV coating on the surface of the aluminum plate;

and step 3: and respectively carrying out a voltage breakdown test in each test area, wherein the test starting voltage is 4000V, the test ending voltage is 7000V, the test time is 10min, and the increment is 500V.

As a still further scheme of the invention: the specific steps of the high temperature softening test are as follows:

the method comprises the following steps: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step two: the high temperature softening test was performed on the coated area of the aluminum sheet surface coated with the UV coating, with a test start temperature of 50 c, a test stop temperature of 300 c, increments of 50 c, and a test time of 72 hours per temperature step.

Compared with the prior art, the invention has the beneficial effects that: this lithium cell aluminium alloy high voltage resistant high temperature resistant UV coating can bear 6000V's at least voltage, good high voltage breakdown resistant effect and extremely strong insulating nature have, and this lithium cell aluminium alloy high voltage resistant high temperature resistant UV coating can bear 200 ℃ at least the temperature and keep indeformable, do not break and do not soften, extremely high temperature resistance has, fluorine-containing group and the modified epoxy group of o-cresol-formaldehyde have extremely strong insulating nature, in addition coating cross-linking density is high, form compact insulating molecular structure network after the solidification, play the effect of high voltage breakdown resistant, fluorine-containing group and the modified epoxy group of o-cresol-formaldehyde can effectively improve the high temperature resistance of coating.

Drawings

FIG. 1 is a data diagram of a voltage breakdown experiment in a high voltage and high temperature resistant UV coating for a lithium battery aluminum profile.

FIG. 2 is a data diagram of a high-temperature softening experiment in the high-voltage and high-temperature resistant UV coating for the lithium battery aluminum profile.

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 high-voltage-resistant high-temperature-resistant UV coating for the lithium battery aluminum profile comprises a UV coating formula and a UV coating performance experiment thereof, wherein the UV coating formula comprises the following components in parts by weight:

6 portions of photoinitiator

10 portions of fluorine-containing acrylate UV diluent

20 parts of 6-functional fluorine-silicon modified acrylate UV resin

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

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

The photoinitiator is a mixture of a photoinitiator TPO and a photoinitiator 184, the part of the photoinitiator TPO is 1 part, and the part of the photoinitiator 184 is 5 parts; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the molecular weight of the 6-functional fluorine-silicon modified acrylate UV resin is 3000-3500 g/mol; the molecular weight of the o-cresol formaldehyde modified epoxy acrylate UV resin is 1000-1500 g/mol; the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 1500-2000 g/mol.

The UV paint performance experiments respectively comprise a voltage breakdown experiment and a high-temperature softening experiment.

The specific steps of the voltage breakdown test are as follows:

step 1: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step 2: dividing a plurality of equal-area test areas in a coating area for coating the UV coating on the surface of the aluminum plate;

and step 3: and respectively carrying out a voltage breakdown test in each test area, wherein the test starting voltage is 4000V, the test ending voltage is 7000V, the test time is 10min, and the increment is 500V.

The specific procedure of the high temperature softening test is as follows:

the method comprises the following steps: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step two: the high temperature softening test was performed on the coated area of the aluminum sheet surface coated with the UV coating, with a test start temperature of 50 c, a test stop temperature of 300 c, increments of 50 c, and a test time of 72 hours per temperature step.

In embodiment 2 of the invention, the high-voltage-resistant high-temperature-resistant UV coating for the lithium battery aluminum profile comprises a UV coating formula and a UV coating performance experiment thereof, wherein the UV coating formula comprises the following components in parts by weight:

6 portions of photoinitiator

Fluorine-containing acrylate UV diluent 15 parts

20 parts of 6-functional fluorine-silicon modified acrylate UV resin

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

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

The photoinitiator is a mixture of a photoinitiator TPO and a photoinitiator 184, the part of the photoinitiator TPO is 1 part, and the part of the photoinitiator 184 is 5 parts; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the molecular weight of the 6-functional fluorine-silicon modified acrylate UV resin is 3000-3500 g/mol; the molecular weight of the o-cresol formaldehyde modified epoxy acrylate UV resin is 1000-1500 g/mol; the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 1500-2000 g/mol.

The UV paint performance experiments respectively comprise a voltage breakdown experiment and a high-temperature softening experiment.

The specific steps of the voltage breakdown test are as follows:

step 1: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step 2: dividing a plurality of equal-area test areas in a coating area for coating the UV coating on the surface of the aluminum plate;

and step 3: and respectively carrying out a voltage breakdown test in each test area, wherein the test starting voltage is 4000V, the test ending voltage is 7000V, the test time is 10min, and the increment is 500V.

The specific procedure of the high temperature softening test is as follows:

the method comprises the following steps: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step two: the high temperature softening test was performed on the coated area of the aluminum sheet surface coated with the UV coating, with a test start temperature of 50 c, a test stop temperature of 300 c, increments of 50 c, and a test time of 72 hours per temperature step.

In embodiment 3 of the invention, the high-voltage-resistant high-temperature-resistant UV coating for the lithium battery aluminum profile comprises a UV coating formula and a UV coating performance experiment thereof, wherein the UV coating formula comprises the following components in parts by weight:

6 portions of photoinitiator

10 portions of fluorine-containing acrylate UV diluent

25 parts of 6-functional fluorine-silicon modified acrylate UV resin

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

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

The photoinitiator is a mixture of a photoinitiator TPO and a photoinitiator 184, the part of the photoinitiator TPO is 1 part, and the part of the photoinitiator 184 is 5 parts; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the molecular weight of the 6-functional fluorine-silicon modified acrylate UV resin is 3000-3500 g/mol; the molecular weight of the o-cresol formaldehyde modified epoxy acrylate UV resin is 1000-1500 g/mol; the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 1500-2000 g/mol.

The UV paint performance experiments respectively comprise a voltage breakdown experiment and a high-temperature softening experiment.

The specific steps of the voltage breakdown test are as follows:

step 1: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step 2: dividing a plurality of equal-area test areas in a coating area for coating the UV coating on the surface of the aluminum plate;

and step 3: and respectively carrying out a voltage breakdown test in each test area, wherein the test starting voltage is 4000V, the test ending voltage is 7000V, the test time is 10min, and the increment is 500V.

The specific procedure of the high temperature softening test is as follows:

the method comprises the following steps: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step two: the high temperature softening test was performed on the coated area of the aluminum sheet surface coated with the UV coating, with a test start temperature of 50 c, a test stop temperature of 300 c, increments of 50 c, and a test time of 72 hours per temperature step.

In embodiment 4 of the invention, the high-voltage-resistant high-temperature-resistant UV coating for the lithium battery aluminum profile comprises a UV coating formula and a UV coating performance experiment thereof, wherein the UV coating formula comprises the following components in parts by weight:

6 portions of photoinitiator

10 portions of fluorine-containing acrylate UV diluent

30 parts of 6-functional fluorine-silicon modified acrylate UV resin

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

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

The photoinitiator is a mixture of a photoinitiator TPO and a photoinitiator 184, the part of the photoinitiator TPO is 1 part, and the part of the photoinitiator 184 is 5 parts; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the molecular weight of the 6-functional fluorine-silicon modified acrylate UV resin is 3000-3500 g/mol; the molecular weight of the o-cresol formaldehyde modified epoxy acrylate UV resin is 1000-1500 g/mol; the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 1500-2000 g/mol.

The UV paint performance experiments respectively comprise a voltage breakdown experiment and a high-temperature softening experiment.

The specific steps of the voltage breakdown test are as follows:

step 1: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step 2: dividing a plurality of equal-area test areas in a coating area for coating the UV coating on the surface of the aluminum plate;

and step 3: and respectively carrying out a voltage breakdown test in each test area, wherein the test starting voltage is 4000V, the test ending voltage is 7000V, the test time is 10min, and the increment is 500V.

The specific procedure of the high temperature softening test is as follows:

the method comprises the following steps: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step two: the high temperature softening test was performed on the coated area of the aluminum sheet surface coated with the UV coating, with a test start temperature of 50 c, a test stop temperature of 300 c, increments of 50 c, and a test time of 72 hours per temperature step.

In embodiment 5 of the invention, the high-voltage-resistant high-temperature-resistant UV coating for the lithium battery aluminum profile comprises a UV coating formula and a UV coating performance experiment thereof, wherein the UV coating formula comprises the following components in parts by weight:

6 portions of photoinitiator

10 portions of fluorine-containing acrylate UV diluent

20 parts of 6-functional fluorine-silicon modified acrylate UV resin

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

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

The photoinitiator is a mixture of a photoinitiator TPO and a photoinitiator 184, the part of the photoinitiator TPO is 1 part, and the part of the photoinitiator 184 is 5 parts; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the molecular weight of the 6-functional fluorine-silicon modified acrylate UV resin is 3000-3500 g/mol; the molecular weight of the o-cresol formaldehyde modified epoxy acrylate UV resin is 1000-1500 g/mol; the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 1500-2000 g/mol.

The UV paint performance experiments respectively comprise a voltage breakdown experiment and a high-temperature softening experiment.

The specific steps of the voltage breakdown test are as follows:

step 1: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step 2: dividing a plurality of equal-area test areas in a coating area for coating the UV coating on the surface of the aluminum plate;

and step 3: and respectively carrying out a voltage breakdown test in each test area, wherein the test starting voltage is 4000V, the test ending voltage is 7000V, the test time is 10min, and the increment is 500V.

The specific procedure of the high temperature softening test is as follows:

the method comprises the following steps: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step two: the high temperature softening test was performed on the coated area of the aluminum sheet surface coated with the UV coating, with a test start temperature of 50 c, a test stop temperature of 300 c, increments of 50 c, and a test time of 72 hours per temperature step.

In embodiment 6 of the invention, the high-voltage-resistant high-temperature-resistant UV coating for the lithium battery aluminum profile comprises a UV coating formula and a UV coating performance experiment thereof, wherein the UV coating formula comprises the following components in parts by weight:

6 portions of photoinitiator

10 portions of fluorine-containing acrylate UV diluent

20 parts of 6-functional fluorine-silicon modified acrylate UV resin

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

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

The photoinitiator is a mixture of a photoinitiator TPO and a photoinitiator 184, the part of the photoinitiator TPO is 1 part, and the part of the photoinitiator 184 is 5 parts; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the molecular weight of the 6-functional fluorine-silicon modified acrylate UV resin is 3000-3500 g/mol; the molecular weight of the o-cresol formaldehyde modified epoxy acrylate UV resin is 1000-1500 g/mol; the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 1500-2000 g/mol.

The UV paint performance experiments respectively comprise a voltage breakdown experiment and a high-temperature softening experiment.

The specific steps of the voltage breakdown test are as follows:

step 1: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step 2: dividing a plurality of equal-area test areas in a coating area for coating the UV coating on the surface of the aluminum plate;

and step 3: and respectively carrying out a voltage breakdown test in each test area, wherein the test starting voltage is 4000V, the test ending voltage is 7000V, the test time is 10min, and the increment is 500V.

The specific procedure of the high temperature softening test is as follows:

the method comprises the following steps: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step two: the high temperature softening test was performed on the coated area of the aluminum sheet surface coated with the UV coating, with a test start temperature of 50 c, a test stop temperature of 300 c, increments of 50 c, and a test time of 72 hours per temperature step.

In embodiment 7 of the invention, the high-voltage-resistant high-temperature-resistant UV coating for the lithium battery aluminum profile comprises a UV coating formula and a UV coating performance experiment thereof, wherein the UV coating formula comprises the following components in parts by weight:

6 portions of photoinitiator

10 portions of fluorine-containing acrylate UV diluent

20 parts of 6-functional fluorine-silicon modified acrylate UV resin

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

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

The photoinitiator is a mixture of a photoinitiator TPO and a photoinitiator 184, the part of the photoinitiator TPO is 1 part, and the part of the photoinitiator 184 is 5 parts; the fluorine-containing acrylate UV diluent is one or more of hexafluorobutyl acrylate, hexafluorobutyl methacrylate and dodecafluoroheptyl acrylate; the molecular weight of the 6-functional fluorine-silicon modified acrylate UV resin is 3000-3500 g/mol; the molecular weight of the o-cresol formaldehyde modified epoxy acrylate UV resin is 1000-1500 g/mol; the molecular weight of the 3-functional fluorine-containing acrylate UV resin is 1500-2000 g/mol.

The UV paint performance experiments respectively comprise a voltage breakdown experiment and a high-temperature softening experiment.

The specific steps of the voltage breakdown test are as follows:

step 1: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step 2: dividing a plurality of equal-area test areas in a coating area for coating the UV coating on the surface of the aluminum plate;

and step 3: and respectively carrying out a voltage breakdown test in each test area, wherein the test starting voltage is 4000V, the test ending voltage is 7000V, the test time is 10min, and the increment is 500V.

The specific procedure of the high temperature softening test is as follows:

the method comprises the following steps: coating the UV paint on the surface of the aluminum plate, wherein the coating thickness of the UV paint is 1 mm;

step two: the high temperature softening test was performed on the coated area of the aluminum sheet surface coated with the UV coating, with a test start temperature of 50 c, a test stop temperature of 300 c, increments of 50 c, and a test time of 72 hours per temperature step.

As can be seen from table 1 and fig. 1, the UV coating can bear a voltage of at least 6000V, and has a good high-voltage breakdown resistant effect and an extremely strong insulating property, when the voltage is 6500V, the UV coating in example 1 is broken down, and when the voltage is 7000V, the UV coatings in examples 1, 2, 3, 5, and 7 are all broken down, so that it is known that the fluorine-containing group and the o-cresol formaldehyde modified epoxy group have an extremely strong insulating property, and in addition, the coating has a high crosslinking density, and a dense insulating molecular structure network is formed after curing, thereby playing a role of high-voltage breakdown resistance.

As can be seen from table 2 and fig. 2, the UV coating layer can withstand a temperature of at least 200 ℃ and maintain no deformation, no cracking, and no softening, and has an extremely high temperature resistance, the UV coating layer in example 1 exhibits a softening phenomenon at 250 ℃, and the UV coating layers in examples 1, 2, 3, 5, and 7 also exhibit a softening phenomenon at 300 ℃, and thus, it is seen that the fluorine-containing group and the o-cresol modified epoxy group can effectively improve the high temperature resistance of the coating layer.

TABLE 1

TABLE 2

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.