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A kind of preparation method of transparent high-impact MBS resin

A technology of high impact resistance and resin, which is applied in the field of preparation of transparent high impact MBS resin, which can solve the problem that the transparency and impact resistance of MBS resin are difficult to have at the same time

Active Publication Date: 2020-10-20
万达集团股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that it is difficult to have both transparency and impact resistance of MBS resin

Method used

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  • A kind of preparation method of transparent high-impact MBS resin

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Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1 A kind of preparation method of transparent high-impact MBS resin

[0020] A preparation method of transparent high-impact MBS resin comprises the following preparation steps in sequence: synthesizing styrene-butadiene latex, synthesizing polymer latex, synthesizing bimodal distribution latex, grafting and synthesizing MBS emulsion, demulsification, water washing, centrifugation and drying.

[0021] (1) The specific operation steps for synthesizing styrene-butadiene latex include: putting 20kg of soft water, 0.09kg of potassium chloride, 0.579kg of emulsifier, 0.36kg of divinylbenzene, 2.45kg of styrene, and 0.02kg of potassium persulfate into a 50L polymerization kettle in sequence , replace with high-purity nitrogen, add 9.8kg of butadiene after the oxygen content is qualified, stir for 10 minutes, then raise the temperature, and raise the temperature to 65°C within one hour, and react at a constant temperature at 65°C, and control the pressure below 1Mpa ...

experiment example 1

[0039] Experimental Example 1 Performance Test

[0040] Mix the MBS-1, MBS-2, MBS-3 prepared in Example 1, Comparative Example 1, and Comparative Example 2 with PVC to prepare samples, and measure the impact resistance according to GB / T 8814-2004.

[0041] The physical index experiment process is as follows:

[0042] 1. Impact strength test: Put the PVC (S-800) base material and MBS1-3 respectively on the open plastic refining machine, set the temperature at 185°C, the speed of the front roller is 15r / min, the speed of the rear roller is 18r / min, and start refining After 3 minutes, pull it into a sheet, and then place it in a flat vulcanizing machine as required. Set the temperature at 185°C, preheat for 3 minutes, and then mold it at 15MPm for 3 minutes, then pass water to cool down for 3 to 5 minutes, take out the obtained sheet, and cut it into standard sample. Tested with a pendulum impact testing machine (Shenzhen Wance Experimental Instrument Co., Ltd.).

[0043] 2. T...

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Abstract

The invention relates to the field of preparation methods of polymer materials, in particular to a preparation method of transparent high impact-resistant MBS resin. The preparation method of the transparent high impact-resistant MBS resin sequentially comprises the following preparation steps: synthesis of styrene-butadiene latex, synthesis of polymer latex, synthesis of latex of double-peak distribution, grafting synthesis of MBS emulsion, demulsification, water washing, centrifugation and drying. Through the preparation method of the transparent high impact-resistant MBS resin, the styrene-butadiene latex with a double-peak distribution cluster-like particle structure, the particle size of small particles is about 100 nm, and the requirement of light transmission can be met; and the particle size of large particles is about 300 nm, and the requirement of impact resistance can be met; since the internal small particles of the double-peak distribution particles are bonded through chemical bonds, the structure can not be destroyed when blending is conducted on the transparent high impact-resistant MBS resin with PVC, so that large impact strength of the blended substance is kept; and meanwhile, transmission of light is not hindered, and therefore a product with excellent impact resistance and transparency can be obtained when the transparent high impact-resistant MBS resin is blended with PVC.

Description

technical field [0001] The invention relates to the field of preparation methods of polymer materials, in particular to a preparation method of transparent high-impact MBS resin. Background technique [0002] MBS resin is a new type of polymer material synthesized under the concept of particle design. It is prepared from methyl methacrylate (M), butadiene (B) and styrene (S) by emulsion graft polymerization. It has a typical core-shell structure in submicroscopic morphology, the core is a rubber phase spherical core with a diameter of 10-100 nm, and the outer shell is composed of styrene and methyl methacrylate. Since the dissolution parameters of methyl methacrylate and polyvinyl chloride (PVC) are similar, it acts as an interfacial adhesive between PVC resin and rubber particles, forming a homogeneous phase in the process of mixing with PVC, while the rubber phase is Distributed in the continuous medium of PVC in a particle state, presenting a sea-island structure, this s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F279/06
CPCC08F279/06
Inventor 谢丰鸣尚吉永郭凌霄房鹏
Owner 万达集团股份有限公司
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