PVC formula

Abstract

The invention relates to a PVC (polyvinyl chloride) formula which is prepared from the following raw materials in parts by weight: 50-70 parts of high-polymerization-degree PVC resin, 30-50 parts of low-polymerization-degree PVC resin, 100 parts of high-polymerization-degree resin and low-polymerization-degree resin, 30-40 parts of a dioctyl phthalate (DOP) plasticizer, 1-3 parts of an organic tin heat stabilizer, 0.5-1.5 parts of a G70S lubricant, 1-2 parts of tetrakis [beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester, 1-2 parts of 2-hydroxy-4-N-octyloxybenzophenone, 0.1 part of octadecanamide, and 1-3 parts of a processing aid. The invention has the beneficial effects that the plasticizing temperature during PVC processing is reduced, the melt viscosity is reduced, the plasticizing processing performance of the material is improved, and the surface quality of the product is improved. moreover, the aging resistance and oxidation resistance of the PVC product are improved, the failure process of the PVC product is slowed down, the service life of the product is guaranteed, and the PVC product is low in cost and suitable for popularization and application.

Description

technical field

[0001] The invention relates to a plastic film formulation, especially a PVC formulation. Background technique

[0002] The main component of PVC film is polyvinyl chloride, and other components are added to improve its heat resistance, toughness and ductility. PVC is a highly polar polymer, and its melting temperature is in the range of 160-210°C, and its processing temperature is close to its decomposition temperature. During molding and processing, PVC is heat-sensitive, and it is extremely unstable after being heated, which can easily lead to PVC de-HCl reaction, and has high melt viscosity and poor fluidity. In addition, film products are prone to aging, and the service life is limited. Contents of the invention

[0003] The invention provides a PVC film formula, which solves one or more of the above technical problems.

[0004] In order to achieve the above object, the present invention is characterized in that it is made of the following raw m...

Examples

Embodiment 1

[0009] High polymerization degree PVC resin 50-70 parts, low polymerization degree PVC resin 30-50 parts, total weight of high and low polymerization degree resin is 100 parts, dioctyl phthalate (DOP) plasticizer 30-40 parts, organotin 1-3 parts of heat stabilizer, 0.5-1.5 parts of G70S lubricant, 1-2 parts of tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 2-hydroxy- 1-2 parts of 4-N-octyloxybenzophenone, 0.1 part of stearic acid amide, and 1-3 parts of processing aid.

Embodiment 2

[0011] 50 parts of high-polymerization PVC resin, 50 parts of low-polymerization PVC resin, 40 parts of dioctyl phthalate (DOP) plasticizer, 2 parts of organotin heat stabilizer, 1 part of G70S lubricant, four [β- (3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol 2 parts, 2-hydroxy-4-N-octyloxybenzophenone 1 part, stearic acid amide 0.1 part, processed 2 parts of auxiliary agent.

Embodiment 3

[0012] Embodiment 3 is the optimal embodiment of the present invention:

[0013] 70 parts of high-polymerization PVC resin, 30 parts of low-polymerization PVC resin, 35 parts of dioctyl phthalate (DOP) plasticizer, 2 parts of organotin heat stabilizer, 0.8 part of G70S lubricant, four [β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] 1.6 parts of pentaerythritol ester, 1 part of 2-hydroxy-4-N-octyloxybenzophenone, 0.1 part of stearic acid amide, processed 1.6 parts of auxiliary agent.

technical field

[0001] The invention relates to a plastic film formulation, especially a PVC formulation. Background technique

[0002] The main component of PVC film is polyvinyl chloride, and other components are added to improve its heat resistance, toughness and ductility. PVC is a highly polar polymer, and its melting temperature is in the range of 160-210°C, and its processing temperature is close to its decomposition temperature. During molding and processing, PVC is heat-sensitive, and it is extremely unstable after being heated, which can easily lead to PVC de-HCl reaction, and has high melt viscosity and poor fluidity. In addition, film products are prone to aging, and the service life is limited. Contents of the invention

[0003] The invention provides a PVC film formula, which solves one or more of the above technical problems.

[0004] In order to achieve the above object, the present invention is characterized in that it is made of the following raw m...

Examples

Embodiment 1

[0009] High polymerization degree PVC resin 50-70 parts, low polymerization degree PVC resin 30-50 parts, total weight of high and low polymerization degree resin is 100 parts, dioctyl phthalate (DOP) plasticizer 30-40 parts, organotin 1-3 parts of heat stabilizer, 0.5-1.5 parts of G70S lubricant, 1-2 parts of tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 2-hydroxy- 1-2 parts of 4-N-octyloxybenzophenone, 0.1 part of stearic acid amide, and 1-3 parts of processing aid.

Embodiment 2

[0011] 50 parts of high-polymerization PVC resin, 50 parts of low-polymerization PVC resin, 40 parts of dioctyl phthalate (DOP) plasticizer, 2 parts of organotin heat stabilizer, 1 part of G70S lubricant, four [β- (3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol 2 parts, 2-hydroxy-4-N-octyloxybenzophenone 1 part, stearic acid amide 0.1 part, processed 2 parts of auxiliary agent.

Embodiment 3

[0012] Embodiment 3 is the optimal embodiment of the present invention:

[0013] 70 parts of high-polymerization PVC resin, 30 parts of low-polymerization PVC resin, 35 parts of dioctyl phthalate (DOP) plasticizer, 2 parts of organotin heat stabilizer, 0.8 part of G70S lubricant, four [β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] 1.6 parts of pentaerythritol ester, 1 part of 2-hydroxy-4-N-octyloxybenzophenone, 0.1 part of stearic acid amide, processed 1.6 parts of auxiliary agent.