Self-repairing polyurethane based on two-way repairing structure, preparation method and application thereof

A technology for repairing structure and polyurethane, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems such as no self-healing polyurethane material reports, loss of use efficiency, cracking, etc., and achieve the effect of excellent repair rate
CN112694587AActive Publication Date: 2021-04-23CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2021-04-23

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Abstract

The invention relates to the field of self-repairing photo-curing materials, and discloses self-repairing polyurethane based on a two-way repairing structure, a preparation method and application thereof. The polyurethane contains structural units provided by R1, R2, R3, R4, R5, R6 and R7; wherein R1 is polyethylene glycol, R2 is isophorone diisocyanate, R3 is terephthalaldehyde, R4 is oxalyl dihydrazide, R5 is resorcinol diglycidyl ether, R6 is furfuryl amine, and R7 is N, N'-(4, 4'-methylene diphenyl)bismaleimide. The polyurethane provided by the invention has excellent self-repairing capability and high self-repairing efficiency, the service life of the material can be prolonged, and the hidden danger of microcracks caused by mechanical damage is reduced.
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Description

technical field

[0001] The present invention relates to the field of self-healing polyurethane, in particular, to a self-healing polyurethane based on a two-way repairing structure, a method for preparing a self-healing polyurethane based on a two-way repairing structure, and a self-healing polyurethane based on a two-way repairing structure prepared by the method Application of polyurethane and self-healing polyurethane based on bidirectional repair structure in at least one product selected from coatings, electronic products and packaging materials. Background technique

[0002] Due to its excellent mechanical properties and good chemical stability, polyurethane materials are widely used in the fields of transportation, electronics, packaging, construction and biomaterials.

[0003] However, these products are often exposed to the environment during use, and will suffer from external collisions, scratches, kinks, chemical corrosion, UV photolysis aging or a combination of ...

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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