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Preparation method of ACR elastic resin with core-shell structure

A technology of elastic resin and core-shell structure, which is applied in the field of preparation of ACR elastic resin with core-shell structure, can solve the problem of ACR elastic resin losing elasticity, achieve the effects of improving elastic properties, excellent low-temperature performance, and improving compatibility

Inactive Publication Date: 2020-03-27
YIBIN TIANYUAN GRP CO LTD +1
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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 to provide a preparation method of ACR elastic resin with core-shell structure, which solves the problem that ACR elastic resin loses elasticity at a low temperature of -25°C

Method used

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  • Preparation method of ACR elastic resin with core-shell structure
  • Preparation method of ACR elastic resin with core-shell structure
  • Preparation method of ACR elastic resin with core-shell structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (a) Synthesis of polysiloxane core emulsion

[0044] At room temperature, mix 40 parts of octamethylcyclotetraoxosilane, 1.0 parts of methyltrimethoxysilane, 1.2 parts of γ-methacryloxytrimethoxysilane, 100 parts of deionized water, and 1.2 parts of 31% concentrated hydrochloric acid , 0.8 parts of sodium dodecylbenzene sulfonate, and 0.2 parts of alkylphenol polyoxyethylene ether were mixed, pre-emulsified by a high-shear emulsifier for 10 minutes, and after deoxygenation by nitrogen, at a temperature of 80°C and a stirring rate of 250r React for 25.0 hours under the condition of / min, add 10% sodium hydroxide solution to adjust the pH value to 7, and obtain polysiloxane core emulsion, and the particle size of polysiloxane seed emulsion is 108nm;

[0045] (b) Synthesis of polysiloxane modified outer core emulsion

[0046] Mix 60 parts of butyl acrylate, 0.9 parts of sodium dodecyl sulfonate, 0.3 parts of alkylphenol polyoxyethylene ether, 0.5 parts of divinylbenzene, ...

Embodiment 2

[0050] (a) Synthesis of polysiloxane core emulsion

[0051] At room temperature, mix 30 parts of octamethylcyclotetraoxosilane, 0.6 parts of methyltrimethoxysilane, 1.8 parts of γ-methacryloxytrimethoxysilane, 90 parts of deionized water, and 0.7 parts of 31% concentrated hydrochloric acid , 0.6 parts of sodium dodecylbenzene sulfonate, and 0.2 parts of alkylphenol polyoxyethylene ether were mixed, pre-emulsified by a high-shear emulsifier for 10 minutes, and after deoxygenation by nitrogen, at a temperature of 65°C and a stirring rate of 250r React for 35.0 hours under the condition of / min, add 10% sodium hydroxide solution to adjust the pH value to 8, and obtain polysiloxane core emulsion, and the particle size of polysiloxane seed emulsion is 126nm;

[0052] (b) Synthesis of polysiloxane modified outer core emulsion

[0053] After mixing 70 parts of butyl acrylate, 1.2 parts of sodium dodecyl sulfonate, 0.4 parts of alkylphenol polyoxyethylene ether, 0.75 parts of allyl m...

Embodiment 3

[0057] (a) Synthesis of polysiloxane core emulsion

[0058] At room temperature, mix 60 parts of octamethylcyclotetraoxosilane, 0.3 parts of methyltrimethoxysilane, 6 parts of γ-methacryloxytrimethoxysilane, 150 parts of deionized water, and 1.5 parts of 31% concentrated hydrochloric acid , 1.5 parts of sodium dodecylbenzenesulfonate, and 0.5 parts of alkylphenol polyoxyethylene ether were mixed, pre-emulsified by a high-shear emulsifier for 10 minutes, and after deoxygenation by nitrogen, at a temperature of 70°C and a stirring rate of 210r React for 24.0 hours under the condition of / min, add 10% sodium hydroxide solution to adjust the pH value to 6, and obtain polysiloxane core emulsion, and the particle size of polysiloxane seed emulsion is 116nm;

[0059] (b) Synthesis of polysiloxane modified outer core emulsion

[0060] After mixing 40 parts of butyl acrylate, 0.6 parts of sodium dodecyl sulfonate, 0.2 parts of alkylphenol polyoxyethylene ether, 0.32 parts of 1,4 butan...

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Abstract

The invention discloses a preparation method of ACR elastic resin with a core-shell structure. The ACR elastic resin comprising a polysiloxane core layer and a polyacrylate shell layer is obtained through a core-shell emulsion polymerization method. The preparation method comprises the preparation steps of the core-layer polysiloxane core emulsion: mixing an organosilicone monomer, a silane coupling agent, a catalyst, deionized water and an emulsifier, emulsifying, introducing nitrogen to remove oxygen, carrying out polymerization reaction, and regulating the pH value to 6-8 after the reactionis ended, and thus obtaining the polysiloxane core emulsion. Polysiloxane latex particles have more excellent elasticity at low temperature; meanwhile, the organosilicone monomer in the preparation stage of the polysiloxane core emulsion comprises methyltrimethoxysilane; an acrylate silane coupling agent is selected, cross-linked structures described in the specification are formed inside and outside polysiloxane emulsion elastic particles in the polymerization reaction process respectively, and the elastic performance of polysiloxane at the low temperature of -25 DEG C or less is improved onthe basis that the ductility of polysiloxane is guaranteed through the structures.

Description

technical field [0001] The invention relates to the field of silicone-modified ACR resins, in particular to a method for preparing ACR elastic resins with a core-shell structure. Background technique [0002] Acrylate (ACR) resin is a high molecular polymer produced by free radical polymerization of acrylate or methacrylate, because of its excellent oil resistance, thermal stability, ozone resistance and UV resistance, and It is widely used in the fields of thermoplastic resins, coatings and impact modifiers. However, due to the poor temperature resistance, water resistance and air permeability of ACR resin, the further application of ACR resin is limited to a certain extent. Silicone polymer (PSi) has extremely low surface energy, and its Si-O bond has a very high bond energy much greater than the C-C bond energy C-O bond energy. Si-O-Si has strong flexibility and lower glass transition temperature. So that it has excellent properties such as water resistance, high and lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/12C08F220/18C08F212/36C08F220/14C08F220/40C08F222/14C08F2/30C08F2/26C08G77/20C08G77/06
CPCC08F283/124C08F2/30C08F2/26C08G77/20C08G77/06
Inventor 石晓林严国银魏欣煜王万萍缑可贞谢濠江徐慧远
Owner YIBIN TIANYUAN GRP CO LTD
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