Light-curing adhesive and its preparation method and application

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, less amount of photoinitiator, and not easy to crystallize

Active Publication Date: 2021-12-21
GUANGDONG PUSTAR SEALED RAYON CO LTD
View PDF12 Cites 0 Cited by
  • 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

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Light-curing adhesive and its preparation method and application
  • Light-curing adhesive and its preparation method and application

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 polyurethane 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 agent. Among them, the mercapto-terminated hyperbranched polyester is obtained by capping the hyperbranched polyester with Boltorn H60 and mercaptoacetic acid; the model of polyurethane acrylate is Runao FSP2159; the epoxy resin is glycidyl ether epoxy resin; 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 additives are 3 parts of 2-isopropylthioxanthone, 2 parts of calcium carbonate and 3 parts of fumed silica. Mix the components uniformly...

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 polyurethane 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 agent. Among them, the mercapto-terminated hyperbranched polyester is obtained by capping the hyperbranched polyester with Boltorn H60 and thioglycolic acid; the model of polyurethane acrylate is Changxing 615-100; the epoxy resin is glycidyl ether epoxy resin; The reactive diluent is 20 parts of ternary epoxy compound (UVR6110) and 17 parts of quaternary epoxy compound (3-methyl-3-hydroxymethyl oxetane); the silane coupling agent is KH590; the photobase 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 silica . ...

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 polyurethane 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 agent. Among them, the mercapto-terminated hyperbranched polyester is obtained by capping the hyperbranched polyester with Boltorn H20 and thioglycolic acid; the model of polyurethane acrylate is Runao FSP2159; the epoxy resin is hydrogenated bisphenol A epoxy resin; The diluent is 25 parts ternary epoxy compound (UVR6110) and 20 parts 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 silica. ...

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a light-curing adhesive and its preparation method and application, wherein the raw materials for the preparation of the light-curing adhesive include mercapto-terminated hyperbranched polyester, polyurethane acrylate, epoxy resin, reactive diluent, silane coupling agent and photopolymer alkaline agent. Compared with the existing technology, the preparation raw material adopts mercapto-terminated hyperbranched polyester, supplemented with reactive diluents, which can further reduce the viscosity of the adhesive system, and help the active components produced after light irradiation to uniformly disperse and migrate in the system , can increase the concentration of active components in the bottom layer, and can quickly achieve deep curing after heating and drying. Using mercapto-terminated hyperbranched polyester, urethane acrylate, and epoxy resin as reactive monomers, under the action of alkaline photoinitiation of photobase generators, the mercapto-double bond / epoxy can be rapidly "click chemically "Type deep photocuring reaction. The introduction of urethane acrylate and silane coupling agent can effectively improve the toughness, adhesion and waterproof performance of the adhesive.

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

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(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
OwnerGUANGDONG PUSTAR SEALED RAYON CO LTD