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Preparation method for flame-retardant acrylic rubber

An acrylate and flame retardant technology, which is applied in the field of preparation of flame retardant acrylate rubber, can solve problems such as poor flame retardant performance of acrylate rubber, achieve good flame retardant effect, improve flame retardant performance, and have little impact on mechanical properties Effect

Active Publication Date: 2015-01-07
SHANGHAI HUAYI GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the problem of poor flame retardancy of acrylate rubber in the prior art, and a new preparation method of flame retardant acrylate rubber is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Under a nitrogen atmosphere, add 64 g of deionized water and 0.64 g of sodium dodecylsulfonate into the three-necked flask, control the temperature of the system at 50° C., and keep stirring. Then weigh 32g of ethyl acrylate, 0.72g of 2-ethyl (methacryloyloxymethyl) phosphonate, 0.72g of glycidyl methacrylate, add 0.064g of azobisisobutyronitrile after emulsification for 0.5h, After reacting for 4 hours, the emulsion obtained by the reaction was coagulated, washed and dried to prepare flame-retardant acrylate rubber. Mooney viscosity (ML100℃ 1+4 ) is 35 and the limiting oxygen index (LOI) is 25.

Embodiment 2

[0018] Under a nitrogen atmosphere, 70 g of deionized water and 0.32 g of sodium lauryl sulfate were added to the three-necked flask, and the temperature of the system was controlled at 70° C. with constant stirring. Then weigh 32g of butyl acrylate, 0.6g of dibutoxy ethyl methacrylate, 0.6g of acrylic acid, and 0.016g of dodecanethiol, add 0.032g of potassium persulfate after emulsification for 1 hour, react for 6 hours, and then react to obtain The emulsion is coagulated, washed and dried to obtain flame-retardant acrylate rubber. Mooney viscosity (ML100℃ 1+4 ) was 41 and the limiting oxygen index (LOI) was 26.

Embodiment 3

[0020] Under a nitrogen atmosphere, add 96 g of deionized water and 0.32 g of polyoxyethylene alkylphenol ether into the three-necked flask, control the temperature of the system at 60° C., and keep stirring. Then weigh 16g of ethyl acrylate, 16g of butyl acrylate, 0.56g of 2-ethyl (methacryloyloxymethyl) phosphate, 0.56g of vinyl chloroacetate, 0.008g of dodecyl mercaptan, emulsify for 1h and add 0.016 g of dicumyl hydroperoxide was reacted for 3 hours, and then the emulsion obtained by the reaction was coagulated, washed and dried to prepare flame-retardant acrylate rubber. Mooney viscosity (ML100℃ 1+4 ) was 37 and the limiting oxygen index (LOI) was 28.

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Abstract

The invention relates to a preparation method for flame-retardant acrylic rubber. According to the preparation method, the problem that the flame-retardant performance of the acrylic rubber in the prior art is poorer is mainly solved. The preparation method for the flame-retardant acrylic rubber, disclosed by the invention, comprises the following steps: under an inert gas atmosphere, adding a main acrylate monomer, a flame-retardant monomer, a cross-linking monomer and a chain transfer agent in a water system containing an emulsifying agent; emulsifying the mixture at the temperature of 40-90DEG C; then adding an initiator for reacting; finally, coagulating, washing and drying the emulsion obtained by reacting to obtain the flame-retardant acrylic rubber, wherein the flame-retardant monomer is a monomer containing double bonds and a phosphate ester group; according to the technical scheme adopted by the invention, the problems are better solved; the preparation method can be used for preparing the flame-retardant acrylic rubber.

Description

technical field [0001] The invention relates to a preparation method of flame-retardant acrylate rubber. Background technique [0002] Acrylate rubber (hereinafter referred to as ACM) is an elastomer obtained by copolymerizing acrylate as the main monomer. Its main chain is a saturated carbon chain and its side groups are polar ester groups. The special structure endows it with many excellent characteristics, such as High and low temperature resistance, aging resistance, oil resistance, ozone resistance, UV resistance, etc. CN03117291.1 relates to a method for preparing acrylate rubber with double / multi-component vulcanization point monomers, using acrylate monomers and a small amount of monomers with crosslinking active groups as raw materials, and adopting an emulsion polymerization method. The resulting copolymer is characterized in that the above-mentioned acrylate monomer raw material is one or more of the following varieties: ethyl acrylate, butyl acrylate, methoxyeth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/16C08F220/32C08F230/02C08F220/18C08F218/04C08F232/08C08F220/28C08F220/14C08F2/26C08F2/30
Inventor 刘平吴亚男吴梓新余敏强
Owner SHANGHAI HUAYI GRP CO
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