A kind of preparation method and application of polycarbonate low temperature toughening masterbatch with compatibilization function

A technology of polycarbonate and toughened masterbatch, which is applied in the field of preparation of polycarbonate low-temperature toughened masterbatch, which can solve the problems of harsh synthesis process conditions, etc., and achieve improved compatibilization effect, low glass transition temperature, and increased low temperature The effect of toughness

Active Publication Date: 2022-03-04
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent application CN108752593A prepared organosiloxane-polycarbonate copolymer, which has good impact strength at low temperature. This copolymer can be used as a low-temperature toughening agent for PC and improve the compatibility of silicone and PC. However, the synthesis process conditions are relatively harsh, and there is still no domestically produced product

Method used

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  • A kind of preparation method and application of polycarbonate low temperature toughening masterbatch with compatibilization function
  • A kind of preparation method and application of polycarbonate low temperature toughening masterbatch with compatibilization function
  • A kind of preparation method and application of polycarbonate low temperature toughening masterbatch with compatibilization function

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Experimental program
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Effect test

Embodiment 1

[0030] (1) Preparation of compatibilizer by emulsion polymerization: Mix methyl vinyl silicone oil, styrene, and acrylonitrile evenly, and record it as the oil phase, wherein the mass ratio of styrene, acrylonitrile, and methyl vinyl silicone oil is 3:1: 3. The molecular weight of methyl vinyl silicone oil is 20,000; in addition, stir the emulsifier sodium dodecylbenzenesulfonate and water at 75°C to fully emulsify, record it as the water phase, then mix the oil phase with the water phase, and continue Stir to form stable emulsion, then add initiator ammonium persulfate and carry out emulsion polymerization, wherein emulsifier sodium dodecylbenzene sulfonate is 5% of monomer total mass, initiator is 0.3% of monomer total mass, in After the reaction at 75°C, the emulsion was broken, and the solid product was filtered and washed, and then dried to constant weight to obtain a styrene-acrylonitrile-silicone oil terpolymer compatibilizer.

[0031] (2) Preparation of modified compat...

Embodiment 2

[0034] (1) Preparation of compatibilizer by emulsion polymerization: Mix methyl vinyl silicone oil, styrene, and acrylonitrile evenly, and record it as the oil phase, wherein the mass ratio of styrene, acrylonitrile, and methyl vinyl silicone oil is 3:1: 2. The molecular weight of methyl vinyl silicone oil is 40,000; in addition, the emulsifier compound emulsifier sodium dodecylbenzene sulfonate and polyethylene glycol octyl phenyl ether and water are stirred at 80°C to fully emulsify, which is recorded as water phase, then mix the oil phase with the water phase, and continue to stir until a stable emulsion is formed, then add initiator potassium persulfate to carry out emulsion polymerization, wherein the compound emulsifier is 4% of the total mass of the monomer, and the initiator is a single After the reaction at 80°C, the emulsification is broken, and the solid product is filtered and washed, and then dried to constant weight to obtain a styrene-acrylonitrile-silicone oil t...

Embodiment 3

[0038] (1) Preparation of compatibilizer by emulsion polymerization: Mix methyl vinyl silicone oil, styrene, and acrylonitrile evenly, and record it as the oil phase, wherein the mass ratio of styrene, acrylonitrile, and methyl vinyl silicone oil is 3:1: 1. The molecular weight of methyl vinyl silicone oil is 60,000; in addition, the emulsifier compound emulsifier of sodium lauryl sulfate and polyethylene glycol octyl phenyl ether is fully emulsified with water at 85°C, which is recorded as the water phase , then mix the oil phase with the water phase, and continue to stir until a stable emulsion is formed, then add the initiator ammonium persulfate to carry out emulsion polymerization, wherein the compound emulsifier is 3% of the total mass of the monomer, and the initiator is 3% of the total mass of the monomer After the reaction is completed at 85°C, the emulsification is broken, and the solid product is filtered and washed, and then dried to constant weight to obtain a styr...

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Abstract

The invention belongs to the field of polymer material modification, and in particular relates to a preparation method and application of a polycarbonate low-temperature toughening masterbatch with a compatibilizing function. The preparation method includes (1) preparation of compatibilizer: use vinyl-containing silicone oil, styrene, and acrylonitrile as comonomers, and in the presence of an initiator, obtain styrene-acrylonitrile-silicon oil ternary compound by free radical copolymerization Copolymer, as compatibilizer with this; (2) compatibilizer modification: carry out graft modification with styrene-acrylonitrile-silicone oil terpolymer and graft monomer in the presence of initiator according to the proportion, prepare (3) preparation of toughened masterbatch: polycarbonate, modified compatibilizer, and liquid silicone rubber are prepared with compatibilizing effect through banburying-extrusion-granulation system in proportion Low temperature toughened masterbatch. And adding the low-temperature toughening masterbatch prepared by the method into the PC resin to improve its low-temperature toughness.

Description

technical field [0001] The invention belongs to the field of polymer material modification, and in particular relates to a preparation method and application of a polycarbonate low-temperature toughening masterbatch with a compatibilizing function. Background technique [0002] Polycarbonate (PC) is a class of polymers containing carbonate groups in the molecular chain, mainly bisphenol A PC. PC has a high glass transition temperature (145-155°C), high viscous flow temperature, high melt viscosity, rigid benzene ring structure, which makes it small in deformation under external force and stable in product size. PC has excellent tensile strength and high impact strength at room temperature. However, in practical applications, PC still has some shortcomings. The rigid benzene ring structure limits the orientation of PC molecular chains. After being subjected to external forces, The orientation is not easy to relax, the residual internal stress of the molecular chain is diffic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/22C08L51/08C08L69/00C08L83/07C08F285/00C08F220/32C08F222/06C08F216/14C08F283/12C08F212/10C08F220/44
CPCC08J3/226C08F283/124C08F285/00C08J2369/00C08J2483/07C08J2469/00C08J2451/08C08F212/10C08F220/44C08F220/325C08F222/06C08F216/1416
Inventor 杨海存唐凯李润飞马文中龚方红刘春林
Owner CHANGZHOU UNIV
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