A two-component cationic visible light initiator and its application in photocuring

A cationic, two-component technology, applied in the field of photopolymerization, can solve the problems of increased cost and environmental hazards, poor environmental safety, high equipment requirements, etc., and achieve the effects of shortening the induction period, fast initiation speed and low synthesis cost
CN108912308BActive Publication Date: 2020-09-18TIANJIN UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN UNIVERSITY OF TECHNOLOGY
Publication Date
2020-09-18

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Abstract

The invention discloses a two-component cationic visible-light initiator and application of the two-component cationic visible-light initiator in the photocuring technology. The two-component cationicvisible light initiator comprises diphenyl iodonium hexafluorophosphate and benzothiadiazole structural unit-based organic dye at a weight ratio of 1:(0.02-1), wherein diphenyl iodonium hexafluorophosphate with a CAS No. Of 58109-40-3) is a commercial ultraviolet photoinitiator, and the benzothiadiazole structural unit-based organic dye is adopted as a sensitizer of diphenyl iodonium hexafluorophosphate. The two-component cationic visible-light initiator has a wide absorption spectrum, curing molding of epoxide can be initiated under irradiation of a visible light source, and rapid curing canbe performed under low illumination of less than 30 mW / cm<2>, so that adoption of a traditional UV source with high energy consumption and large radiation is avoided; in addition, the benzothiadiazole structural unit-based organic dye has small synthesis difficulty, few steps and low-cost raw materials.
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Description

technical field

[0001] The invention belongs to the technical field of photopolymerization, and in particular relates to a two-component cationic visible light initiator and its application in the photocuring field. Background technique

[0002] Cationic photocuring can avoid the phenomenon of oxygen inhibition in free radical photocuring, such as epoxy monomers or prepolymers with strong shrinkage resistance. Compared with free radical photocuring, the curing speed of cationic photocuring process is slow, and there is an induction period. Initiator is an important part of the photocuring system. Common commercial cationic photoinitiators are mostly ultraviolet photoinitiators, which can match ultraviolet light sources. However, traditional ultraviolet light sources have high energy consumption, large radiation, and high requirements for equipment. , Poor environmental protection and safety. In the light curing molding technology, the cost and environmental hazards are incr...

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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