Active group containing polyacrylate flexibilizer, preparation method thereof and epoxy resin adhesive modified by same

A polyacrylate, reactive group technology, used in epoxy resin adhesives, adhesives, adhesive additives, etc., can solve the problem of low shear strength and peel strength, cannot be used as structural adhesives, and epoxy resin adhesives have poor heat resistance. and other problems, to achieve the effect of good shear strength and peel strength, excellent shear strength and peel strength, and excellent performance
CN101993670AInactive Publication Date: 2011-03-30INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
Publication Date
2011-03-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an active group containing polyacrylate flexibilizer, a preparation method thereof and epoxy resin adhesive modified by the flexibilizer. The invention solves the problems that the existing polyacrylate modified epoxy resin adhesive has poor heat resistance, shear strength and peel strength are low, and the existing adhesive can not be used as structural adhesive. The flexibilizer is obtained by reaction of monomer, dispersion medium, initiator, chain transfer agent and chain terminator. Half of mixed solution of monomer and initiator and dispersion medium are added into a reactor, and then the rest of mixed solution and the chain transfer agent are added into the reactor, and finally the chain terminator is added, thus obtaining the flexibilizer by reaction. The adhesive contains component A and curing agent as well as component C DMP-30; wherein the component A is composed of flexibilizer and epoxy resin. The flexibilizer modified adhesive of the invention has good heat resistance, shear strength at 25 DEG C can reach 44.7MPa, and peel strength at 25 DEG C can reach 8.24kN / m. The adhesive of the invention can be used as structural adhesive.
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Description

technical field

[0001] The invention relates to a polyacrylate toughening agent, a preparation method thereof and an epoxy resin adhesive modified therewith. Background technique

[0002] Epoxy resin adhesive is an adhesive with good bonding performance, corrosion resistance, insulation, high strength and other properties, but its cured substance is brittle and difficult to meet the needs of some engineering technologies. The toughening modification of epoxy resin has always been the focus of research on the toughening modification of epoxy resin adhesives, and a lot of research has been carried out at home and abroad. Toughening epoxy resins by using liquid rubber with reactive functional groups on the main structure is a research hotspot in recent years. For example, CTBN, HTBN, etc., can use their reactive functional groups to react with the main structure of epoxy resin to form prepolymers, and the toughness of the system can be improved with little loss of thermal and ...

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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