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Aging-resistant PVC (polyvinyl chloride)

An anti-aging, antioxidant technology, used in anti-aging PVC. It can solve the problems of poor thermal stability, poor flame retardancy, and susceptibility to light oxidation and toughness, and achieve the effect of good thermal stability.

Active Publication Date: 2015-07-08
HUBEI KINMA PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above technical problems, the present application provides an aging-resistant PVC and its preparation method, which solves the problems of the existing aging-resistant PVC, which is not anti-aging, is susceptible to photooxidation, has low toughness, poor thermal stability, poor flame retardancy, and is not resistant to acid and alkali corrosion. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0062] PVC 100;

[0063] Bisphenol A 0.4;

[0064] Triphenylphosphite 1;

[0065] Epoxychlorocarbon 20;

[0066] DOP 35;

[0067] DOS 10;

[0068] Epoxy octyl stearate 5;

[0069] Barium stearate 1.8;

[0070] Cadmium stearate 0.6;

[0071] Zinc stearate 0.2;

[0072] UV-9 0.3;

[0073] Antioxidant CA 0.5.

[0074] Step 2: Mix the above raw materials for 10-15 minutes to disperse the components evenly;

[0075] The third step: the material mixed in the second step is granulated with a twin-screw extruder at a temperature of 200-220° C., and extruded at a temperature of 200-230° C. to granulate.

[0076] After 2500 hours of ultraviolet light irradiation, the elongation retention rate of the product is 98%; the tensile strength is 40MPa, self-extinguishing within 9s, and the elongation at break is 300%.

Embodiment 2

[0078] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0079] PVC 100;

[0080] Bisphenol A 0.4;

[0081] Triphenyl phosphite 0.8;

[0082] Epoxychlorocarbon 20;

[0083] DOP 26;

[0084] DBP 10;

[0085] Barium stearate 1.3;

[0086] Lead stearate 1.2;

[0087] UV-9 0.3;

[0088] Antioxidant DNP1.

[0089] Step 2: Mix the above raw materials for 10-15 minutes to disperse the components evenly;

[0090] The third step: the material mixed in the second step is granulated with a twin-screw extruder at a temperature of 200-220° C., and extruded at a temperature of 200-230° C. to granulate.

[0091] After 2500 hours of ultraviolet light irradiation, the elongation retention rate of the product is 98.2%; the tensile strength is 44MPa, self-extinguishing within 8.8s, and the elongation at break is 305%.

Embodiment 3

[0093] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0094] PVC 100;

[0095] Bisphenol A 0.4;

[0096] Triphenyl phosphite 0.9;

[0097] Epoxychlorocarbon 25;

[0098] DOP 32;

[0099] DBP 10;

[0100] DOS 8;

[0101] Barium stearate 2;

[0102] UV-327 0.2;

[0103] Antioxidant 1010 0.9.

[0104] Step 2: Mix the above raw materials for 10-15 minutes to disperse the components evenly;

[0105] The third step: the material mixed in the second step is granulated with a twin-screw extruder at a temperature of 200-220° C., and extruded at a temperature of 200-230° C. to granulate.

[0106] After 2500 hours of ultraviolet light irradiation, the elongation retention rate of the product is 98.4%; the tensile strength is 48MPa, self-extinguishing within 8.5s, and the elongation at break is 310%.

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Abstract

The invention provides aging-resistant PVC (polyvinyl chloride). The aging-resistant PVC comprises the following components in parts by weight: 100 parts of PVC, 0.01-2 parts of bisphenol A, 0.1-5 parts of triphenyl phosphate, 5-50 parts of epoxy chloroparaffin, 5-80 parts of plasticizer, 0.1-10 parts of heat stabilizer, 0.05-5 parts of ultraviolet absorber and 0.05-2 parts of antioxidant. The aging-resistant PVC has the technical effects that after the product undergoes ultraviolet irradiation for 2500 hours, the elongation retention rate is 99%; the tensile strength is 40-70MPa which is improved by 30-40MPa compared with that of the pure PVC; the oxygen index of the product is 38-39%, so that the product is self-extinguished within seven seconds, and the combustion smoke generation amount is 7-9%; and the elongation at break of the product is 300-360%, and the product is resistant to aging and chemical corrosion, is anti-static, has good heat stability, can be widely produced, and can continuously replace the existing materials.

Description

technical field [0001] The application belongs to the field of PVC materials, in particular to an aging-resistant PVC. Background technique [0002] Many people are not very clear about the concept of PVC. In fact, PVC material is polyvinyl chloride. It is a material with a wide range of uses and is often used in our lives. Such as PVC pipe, PVC floor, PVC wallpaper and so on. The demand for PVC in the Indian market is increasing year by year, and India's PVC will continue to rely on imports in the future. With the development of social urbanization, technology, and humanization, and the rapid development of the PVC industry, PVC materials are getting closer to people's lives, followed by an increase in the use of PVC materials, and most PVC products are not anti-aging , Susceptible to photooxidation and low toughness, poor thermal stability, poor flame retardancy, and not resistant to acid and alkali corrosion. [0003] According to different production methods, PVC can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K13/02C08K5/13C08K5/526
Inventor 胡本巨
Owner HUBEI KINMA PLASTIC IND