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A kind of preparation method of functional acrylate polymer particles with core-shell structure for polycarbonate toughening

A technology of core-shell structure and acrylate, which is applied in the field of preparation of functional acrylate polymer particles with core-shell structure for polycarbonate toughening, which can solve the problems of poor processing performance and decreased tensile strength of blends

Active Publication Date: 2017-10-20
HEBEI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is: for the toughening of polycarbonate base resin, it is necessary to add more than 10% rubber elastomer modifier, so that the notched impact strength can meet the requirements of use, which will reduce the tensile strength of polycarbonate 15% or more, and the processing performance of the blend becomes poor, and a method for preparing polycarbonate toughening functional acrylate polymer particles with a core-shell structure is provided

Method used

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  • A kind of preparation method of functional acrylate polymer particles with core-shell structure for polycarbonate toughening
  • A kind of preparation method of functional acrylate polymer particles with core-shell structure for polycarbonate toughening
  • A kind of preparation method of functional acrylate polymer particles with core-shell structure for polycarbonate toughening

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] a. Pre-emulsification of seed monomer

[0046] First, add 0.71g of anionic emulsifier sodium dihexyl adipate sulfonate and 150g of deionized water into a 500ml four-neck flask, and mix and stir for 30 minutes; then add 12g of 2-ethyloctyl acrylate to the reactor The monomer and 0.04g of cross-linking agent 1,4-butanediol diacrylate were placed on an electromagnetic stirrer and stirred for 20 minutes to obtain a seed monomer pre-emulsion for later use;

[0047] b. Pre-emulsification of monomers in the growth phase of the nuclear layer

[0048] Add 1.61g of anionic emulsifier sodium dihexyl adipate sulfonate, 128g of 2-ethyloctyl acrylate monomer and 0.46g of cross-linking agent allyl methacrylate into a 400ml beaker, then place it under electromagnetic stirring Mix and stir for 20 minutes to obtain the pre-emulsion of the nuclear layer growth monomer, which is set aside;

[0049] c. Pre-emulsification of shell monomer

[0050] Add 1.20g of anionic emulsifier dihexyl a...

Embodiment 2～9

[0080] Other steps are the same as in Example 1, but the types of shell functional monomers used in Examples 2 to 9 and the change values ​​of the initiator quality in the initiator aqueous solution 2 are shown in Table 1.

[0081] The quality of the initiator in the shell layer functional monomer kind and initiator aqueous solution 2 used in the embodiment 2~9 of table 1

[0082]

[0083]

[0084] The polymerization parameters of the core-shell functional acrylate polymers in the above examples are listed in Table 2, and the mechanical properties of these core-shell functional acrylate polymer-modified polycarbonate blends are listed in Table 3.

[0085] Table 2 Polymerization parameters of core-shell functional acrylate polymers

[0086]

[0087] Table 3 Mechanical properties of acrylate polymer and polycarbonate blends

[0088]

[0089]

[0090] figure 1 It is a diagram of the variation of monomer conversion rate with reaction time in the preparation process ...

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Abstract

The invention relates to a method for preparing functional acrylate polymer particles with a core-shell structure for polycarbonate toughening. The method selects the polymerized monomer of the core layer elastomer, the functional monomer of the shell layer and the emulsifier, utilizes the seed emulsion polymerization technology, and forms the core layer, methacrylic acid through the preparation of the elastomer at the seed stage and the growth of the particle size of the seed elastomer. Methyl ester and functional monomers are copolymerized to form a shell layer, and the addition method of the initiator is adjusted. Finally, after the heat preservation stage, a functional acrylate polymer with a core-shell structure containing different functional monomers in the shell layer is obtained, which improves the monomer conversion rate and simplifies The post-treatment process of residual monomers in the polymerization product is described. It is used for the blending modification of polycarbonate by blending, and a suitable functional monomer for toughening polycarbonate matrix materials is obtained. The low-temperature notched impact strength of the blend is significantly improved compared with that of pure polycarbonate. And maintain the tensile strength of polycarbonate.

Description

technical field [0001] The invention relates to the field of polymer material modification, in particular to a method for preparing functional acrylate polymer particles with a core-shell structure for polycarbonate toughening. Background technique [0002] Polycarbonate is one of the five major engineering plastics, and its output and consumption are second only to polyamide, ranking second. The most commonly used polycarbonate is bisphenol A type, which contains a large number of benzene ring structures in its molecule, its molecular chain is relatively rigid, it is not easy to crystallize, and its glass transition temperature is high. The characteristics of its molecular chain structure determine that it has many excellent properties, such as high impact strength, good creep resistance and dimensional stability, heat resistance, transparency, low water absorption, non-toxic, and excellent dielectric properties. It is widely used in electronics, automobiles, medical equip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/56C08F222/14C08F220/32C08F220/06C08L69/00C08L33/08
CPCC08F220/18C08L69/00C08F220/1808C08L33/08C08F220/06C08F222/102C08F220/1803C08F220/14C08F220/325C08F222/02C08F220/56
Inventor 李国华耿佩佩钟孟光杨娜姚艳梅瞿雄伟
Owner HEBEI UNIV OF TECH