Preparation method for anti-flaming methylated polyvinyl chloride

A flame retardant polyvinyl chloride and polyvinyl chloride technology, which is applied in the field of materials, can solve problems such as poor compatibility, reduced stability and strength of finished products, agglomeration, etc., to improve stability and strength, improve comprehensive performance, and improve flame retardant and fire performance. Effect

Inactive Publication Date: 2017-10-10
陈涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then, in order to improve the mechanical properties of polyvinyl chloride, many kinds of inorganic additives are often added to it, and then the compatibility between inorganic additives and polymers is poor, which is easy to cause agglomeration and reduce the stability and strength of the finished product.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of methylated flame-retardant polyvinyl chloride, comprising the following steps:

[0019] (1) Take 7 parts by weight of sodium stannate, add it to 16 times its weight in deionized water, stir evenly, add 3 parts by weight of polytetrahydrofuran ether glycol, raise the temperature to 70 ° C, keep stirring for 30 minutes, add 1 part by weight of ammonium polyphosphate is stirred to normal temperature to obtain an alcohol dispersion;

[0020] (2) Mix 6 parts by weight of zinc oxide and 30 parts by weight of octylphenylcyclotetrasiloxane, heat and stir at 50° C. for 2 hours, add to the above-mentioned alcohol dispersion, and send it into the reaction kettle. Adjust the temperature of the reaction kettle to 110°C, heat and stir for 40 minutes, discharge, filter, wash the precipitate with water, and dry at room temperature to obtain flame-retardant siloxane;

[0021] (3) Get 17 parts by weight of kaolin, calcinate it at 800°C for 3 hours, grind it into ...

Embodiment 2

[0028] (1) Take 4 parts by weight of sodium stannate, add it to deionized water 10 times its weight, stir evenly, add 2 parts by weight of polytetrahydrofuran ether glycol, raise the temperature to 60 ° C, keep stirring for 20 minutes, add 0.6 parts by weight of ammonium polyphosphate, stirred to normal temperature, to obtain alcohol dispersion;

[0029] (2) Mix 5 parts by weight of zinc oxide and 24 parts by weight of octylphenylcyclotetrasiloxane, heat and stir at 40° C. for 1 hour, add it to the above-mentioned alcohol dispersion, and send it into the reaction kettle. Adjust the temperature of the reaction kettle to 10°C, heat and stir for 30 minutes, discharge, filter, wash the precipitate with water, and dry at room temperature to obtain flame-retardant siloxane;

[0030] (3) Get 10 parts by weight of kaolin, calcinate it at 600°C for 2 hours, grind it into fine powder after cooling, mix it with 0.4 part by weight of 2-mercaptobenzimidazole, and add it to deionized water ...

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Abstract

The invention discloses a preparation method for anti-flaming methylated polyvinyl chloride. According to the invention, kaolin and polyvinyl chloride are effectively combined with each other through cross-linking treatment, so that the stability strength of the end product of materials is promoted, the agglomeration is reduced, the added zinc caprylate and kaolin both can achieve excellent anti-flaming and fireproof properties and the overall performance of the end product of materials can be promoted.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a preparation method of methylated flame-retardant polyvinyl chloride. Background technique [0002] Polyvinyl chloride is a polymer formed by polymerization of vinyl chloride monomer in peroxide, azo compound and other initiators; or under the action of light and heat according to the mechanism of free radical polymerization. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins. PVC is a white powder with an amorphous structure, the degree of branching is small, the relative density is about 1.4, the glass transition temperature is 77-90°C, it begins to decompose at about 170°C, and it has poor stability to light and heat. When exposed to sunlight, it will decompose to produce hydrogen chloride, and further autocatalyze the decomposition, causing discoloration and rapid decline in physical and mechanical properties....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L33/26C08K13/06C08K9/02C08K9/04C08K3/24C08K3/34C08K3/32C08K5/098
CPCC08L27/06C08K2003/323C08L2201/02C08L2205/03C08L2312/00C08L33/26C08K13/06C08K9/02C08K9/04C08K3/24C08K3/346C08K3/32C08K5/098
Inventor 陈涛
Owner 陈涛
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