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Preparation method of acrylate polymer particles used for modifying PA6 (polyamide 6)/PBT (polybutylene terephthalate) blends

A technology of acrylate and polymer, which is applied in the field of blending modification of engineering plastic base resins, can solve the problems of low impact strength and poor compatibility of blends, and achieve the effect of improving notched impact strength

Active Publication Date: 2016-08-24
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new type of PA6 / PBT blend toughening modification for the current poor compatibility of the two matrix resins of the PA6 / PBT blend material, which leads to the low impact strength of the blend. Preparation method of acrylate polymer particles

Method used

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  • Preparation method of acrylate polymer particles used for modifying PA6 (polyamide 6)/PBT (polybutylene terephthalate) blends
  • Preparation method of acrylate polymer particles used for modifying PA6 (polyamide 6)/PBT (polybutylene terephthalate) blends
  • Preparation method of acrylate polymer particles used for modifying PA6 (polyamide 6)/PBT (polybutylene terephthalate) blends

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Embodiment 1

[0044] a. Preparation of seed monomer pre-emulsion

[0045] Firstly, nitrogen was evacuated into a 500ml four-neck flask for 30min, and 0.51g of anionic emulsifier dioctyl succinate sodium sulfonate and 140g of deionized water were added and stirred for 30min; then, 10g of n-hexyl acrylate was added to the reaction flask and 0.054g cross-linking agent allyl acrylate, and mixed and stirred for 10min to obtain the seed monomer pre-emulsion for subsequent use;

[0046] b. Preparation of core layer monomer pre-emulsion

[0047] Add 1.85g of anionic emulsifier dioctyl succinate sodium sulfonate, 150g of n-hexyl acrylate monomer and 0.75g of crosslinking agent allyl acrylate into a 250ml beaker, stir for 20min under the action of electromagnetic stirring to make it fully mixed, Promptly obtain the nuclear layer monomer pre-emulsion, for subsequent use;

[0048] c. Preparation of shell monomer pre-emulsion

[0049] Add 0.80g of anionic emulsifier dioctyl succinate sodium sulfonate...

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Abstract

The invention provides a preparation method of acrylate polymer particles used for modifying PA6 (polyamide 6) / PBT (polybutylene terephthalate) blends. The method is characterized by preparing the radial composition and emulsion particle size controllable particles for modifying the PA6 / PBT blends by adopting n-hexyl acrylate as a nucleus layer rubber elastomer monomer and allyl acrylate as a crosslinking agent, selecting sodium dioctyl sulfosuccinate as an emulsifier, adopting a thermal initiator system and a semi-continuous seed emulsion polymerization method, copolymerizing a functional monomer maleic acid on emulsion particle surfaces at the same time and relying on the effects of the interface chemical reaction between a maleic acid polymer and PA6 and PBT. The preparation method has the beneficial effects that the notch impact strength of the PA6 / PBT blends is improved, thus achieving the aim of toughening; and meanwhile, the water absorption of the PA6 / PBT blends is reduced.

Description

Technical field: [0001] The invention relates to the field of blending modification of engineering plastic base resins, in particular to a preparation method for modifying polyamide 6 / polybutylene terephthalate blends with acrylate polymer particles. Background technique: [0002] In recent years, the application of plastic blends has become more and more extensive. The development of the production of plastic blends is of great significance for improving the competitiveness of domestic resins and the domestic plastic processing level. General-purpose plastic blends As its production technology has matured, people mainly focus on research on engineering plastic blends. Polyamide 6 (PA6) and polybutylene terephthalate (PBT) are widely used engineering plastics. PA6 has excellent mechanical properties, self-lubrication and chemical corrosion resistance, etc., and its molecule contains active amide groups (-NHCO), which is easy to carry out blending and modification. Therefore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F285/00C08F220/14C08F222/02C08F2/22C08L77/02C08L67/02C08L51/00
CPCC08F2/22C08F285/00C08L77/02C08L2205/03C08L2205/08C08L2207/53C08L67/02C08L51/003C08F220/14
Inventor 瞿雄伟李红蕊王进炜张广林王农跃刘盘阁杨盼星
Owner HEBEI UNIV OF TECH
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