A kind of preparation method of visible light curing self-healing fluorine-containing polyurethane resin

A polyurethane resin and self-repairing technology, which is applied in the preparation of organic compounds, chemical instruments and methods, and the preparation of carboxylic acid amides, can solve the problems of high brittleness and poor low temperature resistance of polyurethane resin, and achieve enhanced tensile strength and heat resistance performance, improved service life and safety factor, and good self-repair function
CN112794983BActive Publication Date: 2022-03-04CHANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGZHOU UNIV
Publication Date
2022-03-04

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Abstract

The invention belongs to the field of light-curing bio-based intelligent materials, and in particular relates to a preparation method of visible light-curing self-repairing fluorine-containing polyurethane resin. First use dichloromethane, dual active functional group photoinitiator, weakly basic acid-binding agent and trifluoroacetyl chloride to react in a nitrogen protection device to prepare a fluorine-containing photoinitiator; Dicarboxylation treatment, under the synergistic action of dihydroxy fluorine-containing monomer, fluorine-containing photoinitiator and diisocyanate, finally prepares self-healing fluorine-containing polyurethane resin cured under visible light conditions. The polyurethane resin of the present invention overcomes the shortcomings of traditional light-curing resins such as high brittleness, easy damage, and poor high temperature resistance. It is cured by visible light that is friendly to the human body, and the material has a self-repairing function, which can prolong the service life of the material and enhance weather resistance and high temperature resistance. properties, the source of the monomer is renewable, and the application prospect is good.
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Description

technical field

[0001] The invention belongs to the field of light-curing bio-based intelligent materials, and in particular relates to a preparation method of visible light-curing self-repairing fluorine-containing polyurethane resin. Background technique

[0002] Photocurable resins are widely used in 3D printing, artificial bones, special coatings, adhesives and other fields because of their fast curing speed, very little organic volatile matter, low cost, and easy operation. However, traditional light-curing resins are cured by ultraviolet light, which requires special equipment to generate ultraviolet radiation, and such equipment is expensive, and the ultraviolet rays produced are harmful to the human body.

[0003] Due to its excellent properties such as friction resistance, low temperature resistance, microphase separation, and controllable hardness and softness, polyurethane is widely used in aviation, railways, auto parts, coatings and other fields. However, polyu...

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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