Light-cured adhesive as well as preparation method and application thereof

An adhesive and light-curing technology, which is applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve problems such as poor bonding strength, adhesion and waterproof performance, uncontrollable system polymerization, and high viscosity of adhesives, etc. Problems, to achieve the effect of small system shrinkage, not easy to crystallize, and improve waterproof performance

Active Publication Date: 2020-12-15
GUANGDONG PUSTAR SEALED RAYON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology not only uses a photoinitiator but also a large amount of thermal initiator, which not only increases the cost, but also leads to the uncontrollable polymerization of the system.
[0004] Therefore, the light-curing adhesives of the prior art generally have the problems of difficulty in deep curing, high viscosity of the adhesive, long curing time, and poor bonding strength, adhesion, and waterproof performance.

Method used

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  • Light-cured adhesive as well as preparation method and application thereof
  • Light-cured adhesive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A light-curing adhesive, in parts by weight, the preparation raw materials include 20 parts of mercapto-terminated hyperbranched polyester, 10 parts of urethane acrylate, 10 parts of epoxy resin, 45 parts of reactive diluent, 2 parts of silane coupling agent, 5 parts of photobase generator and 8 parts of auxiliary. Among them, the mercapto-terminated hyperbranched polyester is obtained by the end-capping reaction of the hyperbranched polyester Boltorn H60 and thioglycolic acid; the model of the urethane acrylate is Runao FSP2159; the epoxy resin is a glycidyl ether epoxy resin; The diluent is 25 parts of ternary epoxy compound (UVR6110) and 20 parts of quaternary epoxy compound (3-methyl-3-hydroxymethyl oxetane); silane coupling agent is KH590; photobase generator It is 1,1,3,3,-tetramethylguanidine·tetraphenylboron quaternary ammonium salt; the auxiliary agent is 3 parts of 2-isopropylthioxanthone, 2 parts of calcium carbonate and 3 parts of fumed silica. The light-curi...

Embodiment 2

[0027] A light-curing adhesive, in parts by weight, the preparation raw materials include 25 parts of mercapto-terminated hyperbranched polyester, 10 parts of urethane acrylate, 10 parts of epoxy resin, 37 parts of reactive diluent, 5 parts of silane coupling agent, 5 parts of photobase generator and 8 parts of auxiliary. Among them, the mercapto-terminated hyperbranched polyester is obtained by the end-capping reaction of the hyperbranched polyester Boltorn H60 and thioglycolic acid; the model of the urethane acrylate is Changxing 615-100; the epoxy resin is a glycidyl ether epoxy resin; Reactive diluents are 20 parts of ternary epoxy compound (UVR6110) and 17 parts of quaternary epoxy compound (3-methyl-3-hydroxymethyl oxetane); silane coupling agent is KH590; photobase generator The agent is 1,1,3,3,-tetramethylguanidine·tetraphenylboron quaternary ammonium salt; the auxiliary agent is 3 parts of 2-isopropylthioxanthone, 2 parts of calcium carbonate and 3 parts of fumed sil...

Embodiment 3

[0029] A light-curing adhesive, in parts by weight, the preparation raw materials include 20 parts of mercapto-terminated hyperbranched polyester, 10 parts of urethane acrylate, 10 parts of epoxy resin, 45 parts of reactive diluent, 2 parts of silane coupling agent, 5 parts of photobase generator and 8 parts of auxiliary. Among them, the mercapto-terminated hyperbranched polyester is obtained by the end-capping reaction of the hyperbranched polyester Boltorn H20 and thioglycolic acid; the model of the urethane acrylate is Runao FSP2159; the epoxy resin is hydrogenated bisphenol A epoxy resin; Diluents are 25 parts of ternary epoxy compound (UVR6110) and 20 parts of quaternary epoxy compound (3,3'-(oxybismethylene)bis(3-ethyl)oxetane); silane The coupling agent is KH590; the photobase generator is 1,1,3,3,-tetramethylguanidine·tetraphenylboron quaternary ammonium salt; the auxiliary agent is 3 parts of 2-isopropylthioxanthone, 2 parts of carbonic acid Calcium and 3 parts fumed...

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Abstract

The invention provides a light-cured adhesive and a preparation method and application thereof.The light-cured adhesive is prepared from sulfydryl-terminated hyperbranched polyester, urethane acrylate, epoxy resin, a reactive diluent, a silane coupling agent and a photobase generator. Compared with the prior art, sulfydryl-terminated hyperbranched polyester is adopted as a preparation raw material, and an active diluent is supplemented, so that the viscosity of the adhesive system can be further reduced, the uniform dispersion and migration of active components generated after illumination inthe system are facilitated, the concentration of active components at the bottom layer can be improved, and deep curing can be quickly realized after heating and drying. Sulfydryl-terminated hyperbranched polyester, urethane acrylate and epoxy resin are used as reaction monomers, and under the action of alkaline light initiation of a photobase generator, sulfydryl double bonds / epoxy can be subjected to a rapid click chemistry type deep photocuring reaction. The polyurethane acrylate and the silane coupling agent are introduced, so that the toughness, the adhesive force and the waterproof performance of the adhesive can be effectively improved.

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] Ultraviolet light curing technology is a technology that uses photoinitiators 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 CN...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J167/00C09J175/14C09J163/00C09J11/06C09J11/04
CPCC09J167/00C09J175/14C09J11/06C09J11/04C08K2003/265C08L2205/03C08L2312/00C08L75/14C08L63/00C08K5/548C08K13/02C08K3/26C08K3/36C08L67/00
Inventor 方章建李桂妃张志文
Owner GUANGDONG PUSTAR SEALED RAYON CO LTD
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