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A kind of preparation method of self-stabilizing polyvinyl chloride resin

A polyvinyl chloride resin and self-stabilizing technology, which is applied in the field of self-stabilizing polyvinyl chloride resin and its preparation, can solve the problems of adding organic tin environmental protection heat stabilizers, etc., and achieve excellent thermal stability, good stability, and product quality uniform effect

Active Publication Date: 2022-01-14
YIBIN TIANYUAN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a preparation method of self-stabilizing polyvinyl chloride resin, which solves the problem that heat stabilizers such as organotin that do not meet environmental protection requirements need to be added during the processing of transparent rigid polyvinyl chloride resin

Method used

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  • A kind of preparation method of self-stabilizing polyvinyl chloride resin
  • A kind of preparation method of self-stabilizing polyvinyl chloride resin

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Get the production raw material of following weight part: Deionized water: 160 parts; Vinyl chloride: 100 parts; Main dispersant: 0.016 part; Auxiliary dispersant: 0.005 part; Antioxidant: 0.006 part; pH regulator: 0.006 part; Terminator: 0.015 part.

[0031] The main dispersant is composed of two kinds of polyvinyl alcohol and hydroxypropyl methylcellulose with different degrees of alcoholysis, that is, 0.008 parts of KH-20 with a degree of alcoholysis of 81, 0.004 parts of L-10 with a degree of alcoholysis of 72, Composed of 0.004 parts F-50 hydroxypropyl methylcellulose. The auxiliary dispersant is 0.005 parts of polyvinyl alcohol LL-02 with an alcoholysis degree of 50. The composite initiator is composed of 0.008 parts of di(2-ethyl)hexyl peroxydicarbonate and 0.004 parts of cumyl peroxyneodecanoate. The pH regulator is ammonium bicarbonate, and the addition amount is 0.006 parts. The composite terminator consists of 0.006 parts of N,N-diethylhydroxylamine, 0.006...

Embodiment 2

[0034] Get the production raw material of following weight part: Deionized water: 160 parts; Vinyl chloride: 100 parts; Main dispersant: 0.016 part; Auxiliary dispersant: 0.005 part; Antioxidant: 0.006 part; pH regulator: 0.006 part; Terminator: 0.015 part.

[0035] The main dispersant is composed of two kinds of polyvinyl alcohol and hydroxypropyl methylcellulose with different degrees of alcoholysis, that is, 0.008 parts of KH-20 with a degree of alcoholysis of 81, 0.004 parts of L-10 with a degree of alcoholysis of 72, Composed of 0.004 parts F-50 hydroxypropyl methylcellulose. The auxiliary dispersant is 0.005 parts of polyvinyl alcohol LL-02 with an alcoholysis degree of 50. The composite initiator is composed of 0.008 parts of di(2-ethyl)hexyl peroxydicarbonate and 0.004 parts of cumyl peroxyneodecanoate. The pH regulator is ammonium bicarbonate, and the addition amount is 0.006 parts. The composite terminator consists of 0.006 parts of N,N-diethylhydroxylamine, 0.006...

Embodiment 3

[0038] Get the production raw material of following weight part: Deionized water: 160 parts; Vinyl chloride: 100 parts; Main dispersant: 0.016 part; Auxiliary dispersant: 0.005 part; Antioxidant: 0.006 part; pH regulator: 0.006 part; Terminator: 0.015 part.

[0039] The main dispersant is composed of two kinds of polyvinyl alcohol and hydroxypropyl methylcellulose with different degrees of alcoholysis, that is, 0.008 parts of KH-20 with a degree of alcoholysis of 81, 0.004 parts of L-10 with a degree of alcoholysis of 72, Composed of 0.004 parts F-50 hydroxypropyl methylcellulose. The auxiliary dispersant is 0.005 parts of polyvinyl alcohol LL-02 with an alcoholysis degree of 50. The composite initiator is composed of 0.008 parts of di(2-ethyl)hexyl peroxydicarbonate and 0.004 parts of cumyl peroxyneodecanoate. The pH regulator is ammonium bicarbonate, and the addition amount is 0.006 parts. The composite terminator consists of 0.006 parts of N,N-diethylhydroxylamine, 0.006...

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Abstract

The invention discloses a preparation method of self-stabilizing polyvinyl chloride resin, which is prepared from the following production raw materials in parts by weight: 100-200 parts of deionized water, 100 parts of vinyl chloride, 0.006-0.02 parts of dispersant, and 0.008 parts of initiator ~0.015 parts, heat stabilizer 0.008~0.03 parts, antioxidant 0.002~0.01 parts, pH regulator 0.003~0.01 parts, terminator 0.008~0.02 parts, the heat stabilizer is an epoxy compound stabilizer. The present invention adds epoxy compound heat stabilizer in the preparation process of polyvinyl chloride resin, and epoxy compound heat stabilizer itself has only common stabilizing effect as auxiliary stabilizer, but because the space of the epoxy group of heat stabilizer The steric hindrance is relatively large, and it is added in the preparation process of polyvinyl chloride resin with antioxidants and terminators. Under its synergistic effect, it can effectively absorb the HCl released by the degradation of PVC, inhibit the catalytic effect of HCl on the further degradation of PVC, and effectively prevent It prevents the decomposition reaction of polyvinyl chloride resin during the molding process, so that it has excellent thermal stability.

Description

technical field [0001] The invention relates to the field of polyvinyl chloride resin synthesis, in particular to a self-stabilizing polyvinyl chloride resin and a preparation method thereof. Background technique [0002] During the processing of polyvinyl chloride resin (PVC resin), the temperature is usually above 150°C, while PVC resin begins to decompose at 120°C, releasing HCL gas. If the decomposition is not inhibited, HCL will promote the decomposition and accelerate the decomposition process of PVC resin. A series of chain reactions caused by the de-HCL reaction finally lead to the breakage of the macromolecular chain, resulting in discoloration of the material and poor performance, which is a defect of polyvinyl chloride resin. In order to solve the problem of poor thermal stability of PVC in the processing industry, heat stabilizers are usually added during the molding process to prevent or delay the decomposition reaction of PVC products during the molding process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F114/06C08F2/44C08K5/1515C08K5/13C08K5/526
CPCC08F114/06C08K5/1515C08K5/13C08K5/526C08F2/44
Inventor 陈洪文仕敏缑可贞徐慧远谢濠江
Owner YIBIN TIANYUAN GRP CO LTD
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