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A method for preparing mbs alloy compatibilizer based on controllable double particle size distribution latex

A dual particle size, compatibilizer technology, applied in the field of alloy compatibilization and toughening, can solve the problems of poor toughness and compatibility

Active Publication Date: 2021-06-04
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a kind of one-step double particle size distribution latex to prepare the method for MBS alloy compatibilizer, to solve the poor technical problem of toughness and compatibility in the existing alloy preparation process, play a certain role in the alloy Compatibility and toughening

Method used

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  • A method for preparing mbs alloy compatibilizer based on controllable double particle size distribution latex

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Step 1: Preparation of styrene-butadiene latex with double particle size distribution in one step

[0036] Add 100g water in the polymerization kettle, 1.8g disproportionated rosin potassium, 1.2g sodium stearate, 0.1g tertiary dodecyl mercaptan, 0.025g cumene hydroperoxide, 0.025g ferrous sulfate, 30g styrene, use After nitrogen replacement for 3 times, 70 g of butadiene was added, stirring was started, the temperature was raised to 5°C, and the reaction was carried out for 5 hours. After raising the temperature to 30°C, add 0.01g of ammonium persulfate, continue the reaction for 4 hours, lower the temperature, discharge the material, and end the reaction. The test results of the reaction results are as follows: after the reaction, the latex presents a double particle size distribution, wherein the small particle size is 30nm and the large particle size is 295nm.

[0037] Step 2: Preparation of MBS compatibilizer

[0038] Add 30g of the above-mentioned styrene-butadi...

Embodiment 2

[0040] Step 1: Preparation of butadiene-isoprene-styrene latex with double particle size distribution in one step

[0041] Add 100g deionized water, 6g sodium dodecylbenzenesulfonate, 0.4g n-tetradecyl mercaptan, 0.15g tert-butyl hydroperoxide, 0.15g sodium iron edetate, 30g to the polymerization kettle Styrene and 20g of isoprene were replaced with nitrogen for 3 times, then 50g of butadiene was added, the stirring was started, the temperature was raised to 20°C, and the reaction was carried out for 10h. After raising the temperature to 90°C, add 0.02g of potassium persulfate to continue the reaction for 15 hours, lower the temperature, discharge the material, and end the reaction. The test results of the reaction results are as follows: after the reaction, the latex presents a double particle size distribution, wherein the small particle size is 43nm and the large particle size is 270nm.

[0042] Step 2: Preparation of MBS compatibilizer

[0043] Add 80g of the above-menti...

Embodiment 3

[0045] Step 1: Preparation of styrene-butadiene latex with double particle size distribution in one step

[0046] Add 100g water, 1.2g sodium stearate, 1.8g octadecyl tertiary amine polyoxyethylene ether, 0.2g tertiary dodecyl mercaptan, 0.08g hydroperoxide p-menthane, 0.1g sulfuric acid in the polymerization kettle Ferrous iron and 30g of styrene were replaced with nitrogen for 3 times, then 70g of butadiene was added, the stirring was started, the temperature was raised to 8°C, and the reaction was carried out for 6h. After raising the temperature to 45°C, add 0.02 g of azobisisobutyronitrile to continue the reaction for 5 hours, then lower the temperature and discharge the material to end the reaction. The test results of the reaction results are as follows: after the reaction, the latex presents a double particle size distribution, wherein the small particle size is 42nm and the large particle size is 375nm.

[0047] Step 2: Preparation of MBS compatibilizer

[0048] Add...

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Abstract

The invention discloses a method for preparing an MBS alloy compatibilizer based on latex with controllable double particle size distribution, which belongs to the field of alloy compatibilization and toughening. It includes two steps: 1) Prepare the latex with double particle size distribution by one-step method; the latex with double particle size distribution adopts high and low temperature one-step free radical emulsion polymerization, and the prepared latex has the characteristics of double distribution of particle size and particle size, and does not need seed emulsion polymerization Or agglomeration process for diameter expansion, the obtained latex particle size distribution is between 200-400nm and 30-100nm, and the size and particle size ratio can be adjusted. 2) The MBS compatibilizer was prepared by the free radical emulsion graft polymerization method of double particle size distribution latex and styrene, methyl methacrylate and acrylonitrile monomers. MBS grafted rubber powder can be fed at one time or continuously to carry out grafting reaction, and the grafting process and grafting degree can be controlled and adjusted. The MBS compatibilizer prepared by the invention has good compatibility with PC and ABS, can obviously improve the toughness of the blend, and plays the role of interface compatibilizer and toughening agent.

Description

technical field [0001] The invention belongs to the field of alloy compatibilization and toughening, and relates to a method for preparing an MBS alloy compatibilizer based on a controllable double particle size distribution latex. Background technique [0002] As an alloy compatibilizer, MBS is mainly used in the PC / ABS alloy (polycarbonate / acrylonitrile-butadiene-styrene copolymer) industry. PC / ABS alloy is an engineering plastic with excellent performance. It combines the formability of ABS material and the excellent mechanical properties of PC material. It is widely used in many fields such as auto parts, communication equipment, household appliances, and lighting equipment. However, due to the large difference in the solubility parameters of the PB (polybutadiene) phase in PC and ABS, if the direct blending process is easy to accumulate internal stress in the material and reduce the performance of the final material. Moreover, in some occasions where toughness is requi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F279/02C08F212/08C08F2/26C08F2/30C08F4/40C08L69/00C08L55/02C08L51/04
CPCC08F4/40C08F279/02C08L69/00C08L2205/03C08L2205/08C08F212/08C08F2/26C08F2/30C08L55/02C08L51/04
Inventor 申凯华史晨玉聂建夫李茂辉
Owner DALIAN UNIV OF TECH