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Light-curing adhesive and its preparation method and application

An adhesive and light curing technology, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problem of deep curing, viscosity, curing time, bonding strength, adhesion, waterproof, Poor controllability of light-curing speed and depth of light-curing, poor comprehensive performance of light-curing adhesives, etc., to achieve the effect of not easy to crystallize, high functionality, and good integration performance

Active Publication Date: 2022-06-07
GUANGDONG PUSTAR SEALED RAYON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, light-curing adhesives are mainly prepared by acrylate and epoxy resin through light-curing technology. This adhesive has serious oxygen inhibition and slow curing speed, especially the problem of deep-layer curing is difficult to solve. Its light-curing speed and light-curing depth are poorly controllable.
Although some researchers use cationic and free radical dual curing systems to increase the curing speed and curing depth, due to the poor compatibility of the cationic photo-curing system and the free-radical photo-curing system in the hybrid system, the overall performance of the photo-curing adhesive is poor.
[0004] Therefore, it is generally difficult for existing light-curing adhesives to take into account comprehensive properties such as deep curing, viscosity, curing time, bonding strength, adhesion, and waterproofing at the same time.

Method used

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  • Light-curing adhesive and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A light-curing adhesive, in parts by weight, the preparation raw materials include 10 parts of acrylate-terminated hyperbranched polyester, 15 parts of urethane acrylate, 10 parts of epoxy resin, 45 parts of reactive diluent, 5 parts of silane coupling agent , 6 parts of photoinitiator, 4 parts of photosensitizer and 5 parts of auxiliary agent. Among them, the acrylate-terminated hyperbranched polyester is obtained by the end-capping reaction of the hyperbranched polyester Boltorn H60 and acrylic acid; the model of the urethane acrylate is Runao FSP2159; the epoxy resin is a glycidyl ether epoxy resin; The diluents are 10 parts pentaerythritol triacrylate, 5 parts pentaerythritol tetraacrylate, 15 parts ternary epoxy compound (UVR6110) and 15 parts quaternary epoxy compound (3-methyl-3-hydroxymethyl oxetane) alkane); the silane coupling agent is KH570; the photoinitiator is a mixture of 3 parts of TPO and 3 parts of triarylsulfonium hexafluoroantimonate; the photosensit...

Embodiment 2

[0029] A light-curing adhesive, in parts by weight, the preparation raw materials include 10 parts of acrylate-terminated hyperbranched polyester, 15 parts of urethane acrylate, 15 parts of epoxy resin, 40 parts of reactive diluent, and 5 parts of silane coupling agent , 6 parts of photoinitiator, 4 parts of photosensitizer and 5 parts of auxiliary agent. Among them, the acrylate-terminated hyperbranched polyester is obtained by the end-capping reaction of the hyperbranched polyester Boltorn H20 and acrylic acid; the type of urethane acrylate is BASF UA9030A; the epoxy resin is glycidyl ether epoxy resin; reactive dilution The agent is 5 parts of pentaerythritol triacrylate, 10 parts of pentaerythritol tetraacrylate, 10 parts of ternary epoxy compound (UVR6110) and 15 parts of quaternary epoxy compound (3-ethyl-3-oxetane methanol); silane The coupling agent is KH570; the photoinitiator is 3 parts TPO and 3 parts triarylsulfonium hexafluoroantimonate mixture; the photosensitize...

Embodiment 3

[0031] A light-curing adhesive, in parts by weight, the preparation raw materials include 10 parts of acrylate-terminated hyperbranched polyester, 10 parts of urethane acrylate, 10 parts of epoxy resin, 50 parts of reactive diluent, and 5 parts of silane coupling agent , 6 parts of photoinitiator, 4 parts of photosensitizer and 5 parts of auxiliary agent. Among them, the acrylate-terminated hyperbranched polyester is obtained by the end-capping reaction of the hyperbranched polyester Boltorn H20 and acrylic acid; the model of the urethane acrylate is Runao Unicry R7162; the epoxy resin is hydrogenated bisphenol A epoxy resin; The reactive diluents are 10 parts pentaerythritol triacrylate, 10 parts pentaerythritol tetraacrylate, 15 parts ternary epoxy compound (UVR6110) and 15 parts quaternary epoxy compound (3-ethyl-3-oxetanemethanol) ; silane coupling agent is KH580; photoinitiator is 3 parts of TPO and 3 parts of triarylsulfonium hexafluoroantimonate mixture; photosensitizer...

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Abstract

The invention provides a light-curing adhesive and its preparation method and application, wherein the raw materials for preparing the light-curing adhesive include acrylate-terminated hyperbranched polyester, polyurethane acrylate, epoxy resin, reactive diluent, silane coupling agent, Photoinitiators and photosensitizers, the reactive diluents include acrylate type reactive diluents and epoxy compound type reactive diluents, and the photoinitiators include free radical photoinitiators and cationic photoinitiators. The preparation raw materials use acrylate-terminated hyperbranched polyester, polyurethane acrylate, and epoxy resin as reactive monomers, and use acrylate-type reactive diluents and epoxy compound-type reactive diluents to form a mixed diluent. Under the action of initiator and cationic photoinitiator, cationic and free radical dual curing system can be carried out, and the compatibility of each component in the system is good, and the overall performance of the prepared adhesive is better.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a photocurable adhesive and a preparation method and application thereof. Background technique [0002] UV curing technology is a technology that uses a photoinitiator to initiate chemical reactions such as polymerization, grafting, and cross-linking of monomers under ultraviolet light irradiation to achieve rapid curing. Due to its economical and environmental advantages such as short curing time, low curing temperature, high energy utilization, and no environmental pollution, it is widely used in traditional fields such as coatings, adhesives, inks, printing plates, dental fillers, optical waveguides, Microelectronics, three-dimensional manufacturing, etc. have been widely used. Although UV curing technology has been developed and widely used, there are still bottlenecks such as surface oxygen inhibition and shallow curing depth. For example, Chinese patent CN107936903A dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C09J163/00C09J167/07C09J11/04C09J11/06
CPCC09J175/14C09J163/00C09J167/07C09J11/04C09J11/06C08L2205/03C08K2003/265C08L67/07C08L63/00C08K13/02C08K3/26C08K3/36C08K5/5425C08L75/14C08K5/548C08K5/5435
Inventor 方章建李桂妃张志文
Owner GUANGDONG PUSTAR SEALED RAYON CO LTD