Photocurable adhesive, preparation method and application thereof

A technology of adhesives and light curing, 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 good functionality and light-curing activity, not easy to crystallize, and good integration performance

Active Publication Date: 2020-12-25
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 a...

Method used

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  • Photocurable adhesive, preparation method and application thereof

Examples

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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 polyurethane 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-capped hyperbranched polyester is obtained by capping the hyperbranched polyester with Boltorn H60 and acrylic acid; the model of polyurethane acrylate is Runao FSP2159; the epoxy resin is glycidyl ether epoxy resin; The diluent is 10 parts of pentaerythritol triacrylate, 5 parts of pentaerythritol tetraacrylate, 15 parts of ternary epoxy compound (UVR6110) and 15 parts of quaternary epoxy compound (3-methyl-3-hydroxymethyloxetane alkane); the silane coupling agent is KH570; the photoinitiator is 3 parts of TPO and 3 parts of triarylsulfonium hexafluoroantimonate mixture; the photosensitizer is 2-isop...

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 polyurethane acrylate, 15 parts of epoxy resin, 40 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-capped hyperbranched polyester is obtained by capping the hyperbranched polyester with Boltorn H20 and acrylic acid; the model of polyurethane acrylate is BASF UA9030A; the epoxy resin is glycidyl ether epoxy resin; reactive diluent The agent is 5 parts of pentaerythritol triacrylate, 10 parts of pentaerythritol tetraacrylate, 10 parts of ternary epoxy compound (UVR6110) and 15 parts of tetravalent epoxy compound (3-ethyl-3-oxetanemethanol); silane The coupling agent is KH570; the photoinitiator is 3 parts of TPO and 3 parts of triarylsulfonium hexafluoroantimonate mixture; the photosensitizer is 2-is...

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 polyurethane acrylate, 10 parts of epoxy resin, 50 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-capped hyperbranched polyester is obtained by capping the hyperbranched polyester with Boltorn H20 and acrylic acid; the model of polyurethane acrylate is Runao Unicry R7162; the epoxy resin is hydrogenated bisphenol A epoxy resin; The reactive diluent is 10 parts of pentaerythritol triacrylate, 10 parts of pentaerythritol tetraacrylate, 15 parts of ternary epoxy compound (UVR6110) and 15 parts of quaternary epoxy compound (3-ethyl-3-oxetanemethanol) ; The silane coupling agent is KH580; the photoinitiator is 3 parts of TPO and 3 parts of triarylsulfonium hexafluoroantimonate mixture; the photosensiti...

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Abstract

The invention provides a photocurable adhesive, a preparation method and application thereof. The photocurable adhesive is prepared from acrylate-terminated hyperbranched polyester, polyurethane acrylate, epoxy resin, a reactive diluent, a silane coupling agent, a photoinitiator and a photosensitizer, wherein the reactive diluent comprises an acrylate reactive diluent and an epoxy compound reactive diluent, and the photoinitiator comprises a free radical photoinitiator and a cationic photoinitiator. Acrylate-terminated hyperbranched polyester, polyurethane acrylate and epoxy resin are taken asreaction monomers, the acrylate reactive diluent and the epoxy compound reactive diluent are compounded to form a mixed diluent, and under the action of a free radical photoinitiator and a cationic photoinitiator, a cationic and free radical dual-curing system can be carried out, and moreover, the compatibility of the components in the system is good, and the prepared adhesive is relatively goodin overall performance.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a photocurable adhesive and its preparation method and application. Background technique [0002] UV curing technology is a technology that uses photoinitiators to initiate chemical reactions such as polymerization, grafting, and crosslinking of monomers under the irradiation of ultraviolet light to achieve rapid curing. Due to its economic and environmental advantages such as short curing time, low curing temperature, high energy utilization rate, and no environmental pollution, it is 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 greatly developed and widely used, there are still bottleneck problems such as surface oxygen inhibition and shallow curing depth. For example, Chinese patent CN107...

Claims

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Application Information

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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
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