1. The tackifying PET master batch is characterized by comprising the following components in parts by weight:

polyethylene terephthalate: 60 to 85 portions of

Polymethyl methacrylate: 4 to 16 portions of

Nano-scale silica: 3-13 parts of

Nano-magnesia: 2-3 parts of

Nano calcium oxide: 0.4 to 0.6 portion

Silicone powder: 3-5 parts of

Chain extender: 1.2 to 1.7 portions of

Transparent nucleating agent: 2.3 to 2.8 portions.

2. The tackified PET masterbatch according to claim 1, comprising the following components in parts by weight:

polyethylene terephthalate: 65-75 parts

Polymethyl methacrylate: 7-13 parts of

Nano-scale silica: 7-11 parts of

Nano-magnesia: 2-3 parts of

Nano calcium oxide: 0.4 to 0.6 portion

Silicone powder: 3-5 parts of

Chain extender: 1.4 to 1.6 portions

Transparent nucleating agent: 2.3 to 2.7 portions.

3. The tackified PET masterbatch according to claim 2, wherein the chain extender is Basff ADR4368C/CS or Basff ADR 4468.

4. The tackified PET masterbatch according to claim 2, wherein the transparent nucleating agent is inorganic nanoscale talc.

5. The tackified PET masterbatch according to claim 4, wherein the inorganic nano-grade talc powder has a fineness of 8000 meshes.

6. The method for preparing the tackified PET masterbatch according to any one of claims 1 to 5, comprising the following steps:

(1) weighing polyethylene glycol terephthalate, polymethyl methacrylate, nano-scale silicon dioxide, nano-magnesium oxide, nano-calcium oxide, silicone powder, a chain extender and a transparent nucleating agent, and pouring into a mixer for fully mixing for later use;

(2) melting, blending, extruding and granulating the mixture by using a screw extruder.

7. The method for preparing the tackified PET masterbatch according to claim 6, wherein in the step (2), the screw extruder is a twin-screw extruder.

8. The preparation method of the tackified PET masterbatch according to claim 6, wherein in the step (2), the rotation speed of the feeding machine of the screw extruder is 8-10 r/min, and the rotation speed of the main machine is 280-310 r/min.

9. The method for preparing the tackified PET masterbatch according to claim 7, wherein in the step (2), the temperature of the screw extruder is 250-270 ℃.

Background

PET (polyethylene terephthalate) has excellent physical and mechanical properties in a wide temperature range and is inexpensive, and thus is widely used in the fields of fibers, films, beverage bottles, and the like. However, in the production process of PET products, the viscosity of the PET products is easily reduced due to the action of heat and a screw shearing machine, and certain influence is caused on the performance of the PET products. In addition, PET is not easy to degrade and brings heavy pressure to the natural environment, so in order to change waste into valuable, waste PET can be recycled by people, but after PET waste is granulated again, the viscosity of the waste PET is reduced more obviously, if the waste PET is directly used, the performance of the waste PET can be greatly influenced, the processing requirement of downstream products can not be met, and the recycling of the PET waste is limited.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a tackified PET master batch.

The invention discloses a tackifying PET master batch which comprises the following components in parts by weight:

polyethylene terephthalate: 60 to 85 portions of

Polymethyl methacrylate: 4 to 16 portions of

Nano-scale silica: 3-13 parts of

Nano-magnesia: 2-3 parts of

Nano calcium oxide: 0.4 to 0.6 portion

Silicone powder: 3-5 parts of

Chain extender: 1.2 to 1.7 portions of

Transparent nucleating agent: 2.3 to 2.8 portions.

According to one embodiment of the invention, the composition comprises the following components in parts by weight:

polyethylene terephthalate: 65-75 parts

Polymethyl methacrylate: 7-13 parts of

Nano-scale silica: 7-11 parts of

Nano-magnesia: 2-3 parts of

Nano calcium oxide: 0.4 to 0.6 portion

Silicone powder: 3-5 parts of

Chain extender: 1.4 to 1.6 portions

Transparent nucleating agent: 2.3 to 2.7 portions.

According to one embodiment of the invention, the chain extender is basf ADR43 4368C/CS or basf ADR 4468.

According to one embodiment of the invention, the transparent nucleating agent is inorganic nanoscale talcum powder.

According to one embodiment of the present invention, the inorganic nano-sized talc has a fineness of 8000 mesh.

A preparation method of tackified PET master batch comprises the following steps:

(1) weighing polyethylene glycol terephthalate, polymethyl methacrylate, nano-scale silicon dioxide, nano-magnesium oxide, nano-calcium oxide, silicone powder, a chain extender and a transparent nucleating agent, and pouring into a mixer for fully mixing for later use;

(2) melting, blending, extruding and granulating the mixture by using a screw extruder.

According to an embodiment of the present invention, in the step (2), the screw extruder is a twin-screw extruder.

According to an embodiment of the present invention, in the step (2), the rotation speed of the feeding machine of the screw extruder is 8 to 10r/min, and the rotation speed of the main machine is 280 to 310 r/min.

According to an embodiment of the present invention, in the step (2), the temperature of the screw extruder is 250 to 270 ℃.

The beneficial effect of this application lies in: by adding the tackified PET master batch into the PET raw material, the viscosity of PET products is improved, the product performance requirements of consumers are met, meanwhile, the PET waste materials are favorably recycled, the material utilization rate is improved, and the environmental burden is reduced; meanwhile, the light transmittance of the product is improved.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following examples are illustrated, and the following detailed descriptions are given:

the tackifying PET master batch in the embodiment comprises the following components in parts by weight: 60-80 parts of polyethylene terephthalate, 4-16 parts of polymethyl methacrylate, 5-13 parts of nano-silicon dioxide, 2-3 parts of nano-magnesium oxide, 0.4-0.6 part of nano-calcium oxide, 3-5 parts of silicone powder, 1.2-1.7 parts of chain extender and 2.3-2.8 parts of transparent nucleating agent.

Preferably, the feed additive comprises the following components in parts by weight: 65-75 parts of polyethylene terephthalate, 7-13 parts of polymethyl methacrylate, 7-11 parts of nano-scale silicon dioxide, 2-3 parts of nano-magnesium oxide, 0.4-0.6 part of nano-calcium oxide, 3-5 parts of silicone powder, 1.4-1.6 parts of chain extender and 2.3-2.7 parts of transparent nucleating agent.

Preferably, the chain extender is basf ADR4368C/CS or basf ADR4468, and the transparent nucleating agent is inorganic nano-scale talcum powder with the fineness of 8000 meshes.

A preparation method of tackified PET master batch comprises the following steps:

(1) weighing polyethylene glycol terephthalate, polymethyl methacrylate, nano-scale silicon dioxide, nano-magnesium oxide, nano-calcium oxide, silicone powder, a chain extender and a transparent nucleating agent, and pouring the materials into a mixer to be fully mixed to obtain a mixture for later use;

(2) melting, blending, extruding and granulating the mixture by using a screw extruder.

Preferably, in the step (2), the screw extruder is a double-screw extruder, the rotating speed of a feeding machine of the screw extruder is 8-10 r/min, the rotating speed of a main machine is 280-310 r/min, and the temperature of the screw extruder is 250-270 ℃.

After the tackifying PET master batch provided by the invention is added into the PET raw material, the viscosity of PET products is improved, the product performance requirements of consumers are met, meanwhile, the recycling of PET waste materials is facilitated, the material utilization rate is improved, and the environmental burden is reduced.

Example 1

60 parts of polyethylene terephthalate, 16 parts of polymethyl methacrylate, 13 parts of nano-scale silicon dioxide, 2.5 parts of nano-magnesium oxide, 0.5 part of nano-calcium oxide, 4 parts of silicone powder, 1.7 parts of basf ADR4368C/CS and 2.3 parts of inorganic nano-scale talcum powder are weighed and poured into a mixer for full mixing, the materials are melted, blended, extruded and granulated by using a double-screw extruder, the rotating speed of a feeding machine of the double-screw extruder is 9r/min of a host machine, the rotating speed is 290r/min, and the temperature is 250-270 ℃.

The tackified PET masterbatch obtained in example 1 was blended with a PET raw material in a proportion of 3%, and then a transparent sheet a1 was prepared by an extrusion molding method.

Example 2

65 parts of polyethylene terephthalate, 13 parts of polymethyl methacrylate, 11 parts of nano-scale silicon dioxide, 2.5 parts of nano-magnesium oxide, 0.5 part of nano-calcium oxide, 4 parts of silicone powder, 1.6 parts of basf ADR4368C/CS and 2.4 parts of inorganic nano-scale talcum powder are weighed and poured into a mixer to be fully mixed, and other conditions are the same as those in example 1.

The tackified PET masterbatch obtained in example 2 was blended with a PET raw material at a ratio of 3%, and then a transparent sheet a2 was prepared by an extrusion molding method.

Example 3

70 parts of polyethylene terephthalate, 10 parts of polymethyl methacrylate, 9 parts of nano-silicon dioxide, 2.5 parts of nano-magnesium oxide, 0.5 part of nano-calcium oxide, 4 parts of silicone powder, 1.5 parts of basf ADR4368C/CS and 2.5 parts of inorganic nano-talcum powder are weighed and poured into a mixer for fully mixing. Other conditions were the same as in example 1.

The tackified PET masterbatch obtained in example 3 was blended with a PET raw material in a proportion of 3%, and then a transparent sheet a3 was prepared by an extrusion molding method.

Example 4

Weighing 75 parts of polyethylene terephthalate, 7 parts of polymethyl methacrylate, 7 parts of nano-silicon dioxide, 2.5 parts of nano-magnesium oxide, 0.5 part of nano-calcium oxide, 4 parts of silicone powder, 1.4 parts of basf ADR4368C/CS and 2.6 parts of inorganic nano-talcum powder, and pouring into a mixer for fully mixing. Other conditions were the same as in example 1.

The tackified PET masterbatch obtained in example 4 was blended with a PET raw material in a proportion of 3%, and then a transparent sheet a4 was prepared by an extrusion molding method.

Example 5

80 parts of polyethylene terephthalate, 4 parts of polymethyl methacrylate, 5 parts of nano-scale silicon dioxide, 2.5 parts of nano-magnesium oxide, 0.5 part of nano-calcium oxide, 4 parts of silicone powder, 1.3 parts of basf ADR4368C/CS and 2.8 parts of inorganic nano-scale talcum powder are weighed and poured into a mixer for fully mixing. Other conditions were the same as in example 1.

The tackified PET masterbatch obtained in example 5 was blended with a PET raw material in a proportion of 3%, and then a transparent sheet a5 was prepared by an extrusion molding method.

Example 6

85 parts of polyethylene terephthalate, 1 part of polymethyl methacrylate, 3 parts of nano-silicon dioxide, 2.5 parts of nano-magnesium oxide, 0.5 part of nano-calcium oxide, 4 parts of silicone powder, 1.3 parts of basf ADR4368C/CS and 2.8 parts of inorganic nano-talcum powder are weighed and poured into a mixer for fully mixing. Other conditions were the same as in example 1.

The tackified PET masterbatch obtained in example 6 was blended with a PET raw material at a ratio of 3%, and then a transparent sheet a6 was prepared by an extrusion molding method.

Comparative example 1

The raw material PET master batch is extruded and molded to prepare a transparent sheet D1.

The intrinsic viscosity of the PET master batch and the PET master batches obtained in examples 1 to 6 after extrusion through an extruder was measured by using an ubbelohde viscometer. In addition, a friction coefficient meter and a spectrophotometer are adopted to respectively measure the dynamic friction coefficient and the transmissivity of the transparent sheet, and the test results are as follows:

from the above two tables of experimental results, the viscosities of the master batches obtained in examples 1 to 6 were significantly higher than those of the raw material PET master batches to which the thickening PET master batch was not added. Compared with the transparent sheet D1 prepared without adding the tackified PET master batch, the dynamic friction coefficient of the transparent sheet A1-A6 is obviously reduced, and the transmissivity is obviously improved, namely, the light transmittance and the smoothness of the transparent sheet added with the tackified PET master batch are obviously improved.

To sum up: by adding the tackified PET master batch into the PET raw material, the viscosity of PET products is improved, the product performance requirements of consumers are met, meanwhile, the PET waste materials are favorably recycled, the material utilization rate is improved, and the environmental burden is reduced; meanwhile, the light transmittance of the product is improved.

The above is merely an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.