Core-shell particles with acroleic acid esterified polyurethane as main body of core and making method and use thereof

A technology of acrylated and acrylic esters, which is applied to core-shell particles with acrylated polyurethane as the main core and its preparation method and application field, which can solve the problems of reduced compatibility, lower glass transition temperature, and incomplete phase separation and other issues, to achieve the effect of lowering the glass transition temperature, good effect, avoiding environmental pollution and toxicity
CN1246355CInactive Publication Date: 2006-03-22GUANGZHOU CHEM GROUTING CO LTD CAS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGZHOU CHEM GROUTING CO LTD CAS
Publication Date
2006-03-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a core-shell particle having a main core body of acrylic acid ester polyurethane, the process for preparation and use, wherein the core-shell particle uses the copolymer of acrylated polyurethane monomer and acrylic ester category soft monomers as the core, and uses the outer grafted upper acrylic ester type hard monomers as shell, while the preparation process comprises the steps of, (1) preparing acrylated polyurethane, (2) re-emulsifying to obtain water-based acrylated polyurethane emulsion, (3)A. charging acrylic ester type soft monomer into the emulsion to obtain seed emulsion, B. charging acrylic ester type hard monomer into the emulsion to obtain core-shell emulsion, (4) demulsifying with sodium chloride saturated solution, freezing, filtering by suction, scouring, drying, grinding thus obtaining the core-shell particle with a main core body of acrylic acid ester polyurethane.
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Description

technical field

[0001] The invention relates to a core-shell particle with acrylated polyurethane as the core body, a preparation method and application thereof. technical background

[0002] Epoxy resin has excellent mechanical strength and bonding performance, good heat resistance, electrical performance and molding processing performance, small shrinkage rate, good medium resistance, and low cost. It is widely used as semiconductor packaging materials and adhesive matrix materials Used in aviation, aerospace, electronics, machinery and other fields. However, the biggest defect of epoxy resin is its high internal stress, high brittleness, and poor impact resistance, which hinder its application. Therefore, toughening modification has become one of the urgent problems to be solved in practical application of epoxy resin.

[0003] Liquid polyurethane is a kind of polymer material with excellent performance. It has the characteristics of high elasticity and high adhesion. I...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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