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Room temperature crosslinked polyacrylate elastomer and preparation method thereof

A technology of polyacrylate and acrylate, which is applied in the field of cross-linkable polyacrylate elastomer at room temperature and its preparation, can solve the problems of low glass transition temperature, hardness and heat resistance, fluidity and processing performance, etc. Achieve low viscosity, excellent processability, controllable structure and molecular weight

Inactive Publication Date: 2019-01-22
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since its hard segment is polymethyl methacrylate, its glass transition temperature is low, which affects its hardness and heat resistance.
On the other hand, to make polyacrylate elastomer have excellent performance, its molecular weight must be large enough, but this will affect its fluidity and processing performance

Method used

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  • Room temperature crosslinked polyacrylate elastomer and preparation method thereof
  • Room temperature crosslinked polyacrylate elastomer and preparation method thereof
  • Room temperature crosslinked polyacrylate elastomer and preparation method thereof

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Embodiment Construction

[0029] The present invention will now be further described in conjunction with specific examples, and the following examples are intended to illustrate the present invention rather than further limit the present invention.

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Abstract

The invention relates to a room temperature crosslinked polyacrylate elastomer and a preparation method thereof. Firstly, a bifunctional polyacrylate macroinitiator is synthesized; and then, the macroinitiator reacts with an allyl monomer or a silane monomer to obtain the room temperature crosslinked polyacrylate elastomer. The invention has the following beneficial effect: the polyacrylate elastomer prepared by the method contains siloxane groups and can be cured at room temperature; the obtained polyacrylate elastomer has the advantages of low viscosity, controllable structure and molecularweight, excellent processability, high strength after curing, good aging resistance, etc.

Description

technical field [0001] The invention relates to the fields of adhesives, coatings, elastomers and the like, in particular to a normal-temperature crosslinkable polyacrylate elastomer and a preparation method thereof. Background technique [0002] Styrene is the most widely used traditional thermoplastic elastomer, such as styrene-isoprene-styrene (SIS) copolymer, styrene-butadiene-styrene (SBS) copolymer and their hydrogenation Objects SEPS, SEBS, etc. Due to their two-phase structure, polystyrene hard segments form physical crosslinks that increase the cohesion and hardness of the elastomer. The poly(iso)butadiene segment acts as a soft segment, endowing the elastomer with excellent elasticity. However, due to the presence of double bonds in the poly(iso)butadiene segment, its oxidation resistance, aging resistance and transparency are affected. Polyacrylate elastomers generally use polymethyl methacrylate as the hard segment and polybutyl acrylate as the soft segment bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F293/00
CPCC08F293/005
Inventor 李坚吴婷徐慧任强汪称意
Owner CHANGZHOU UNIV
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