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A Hybrid Curing Photoblackened Acrylic Adhesive

An acrylate and hybrid curing technology, applied in the direction of ester copolymer adhesives, adhesive types, etc., can solve the problems of incompatibility between shading rate and curing thickness, incompatibility of pigments and systems, etc., and improve the body strength , Improve the effect of curing thickness

Active Publication Date: 2020-06-26
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the shading rate and curing thickness of ordinary black photocurable adhesives cannot be achieved at the same time, and the problem that the pigment is incompatible with the system, the present invention provides a hybrid curable photoblackened acrylate adhesive and a preparation method thereof. To achieve the purpose of solving the above problems

Method used

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  • A Hybrid Curing Photoblackened Acrylic Adhesive
  • A Hybrid Curing Photoblackened Acrylic Adhesive
  • A Hybrid Curing Photoblackened Acrylic Adhesive

Examples

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Effect test

Embodiment 1

[0035] Example 1: Add 160g of glycidyl acrylate, 111.1g of 3-pyrrole carboxylic acid, 0.14g of p-hydroxyanisole, and 0.8g of triphenylphosphine into a three-necked flask, start stirring at the same time, and heat to 110°C under a dry nitrogen atmosphere to react When the acid value is ≤0.2mgKOH / g, the heating reaction is stopped to obtain the acrylate functional resin; 13.56g 2,2-dimethoxy-2-phenylacetophenone (DMPA), 27g p-(octyloxy Phenyl)phenyliodonium hexafluoroantimonate (Ph 2 ikB 6 ) The photoinitiator is added to the above-mentioned acrylate functional resin in turn, and stirred at room temperature until the photoinitiator is completely dissolved.

Embodiment 2

[0036] Example 2: Add 142.15g of glycidyl acrylate, 111.1g of 3-pyrrolecarboxylic acid, 0.03g of phenothiazine, and 0.26g of dimethylaniline into a three-necked flask, start stirring at the same time, and heat to 110°C under a dry nitrogen atmosphere to react to When the acid value is ≤0.2mgKOH / g, stop the heating reaction to obtain the acrylate functional resin; mix 2.5g of ethyl-4-dimethylaminobenzoate (EDMAB), 12.67g of bis(4,4'-sulfide The triphenylsulfonium) hexafluorophosphate photoinitiator is sequentially added to the above-mentioned acrylate functional resin, and stirred at room temperature until the photoinitiator is completely dissolved.

Embodiment 3

[0037] Example 3: 170.58g of glycidyl acrylate, 111.1g of 3-pyrrole carboxylic acid, 0.28g of phenothiazine, and 1.4g of triethylbenzyl ammonium chloride were added to a three-necked flask, and stirring was started at the same time, and heated under a dry nitrogen atmosphere to Stop the heating reaction when the acid value is less than or equal to 0.2mgKOH / g at 110°C to obtain the acrylate functional resin; mix 28g 2-methoxy-2-phenylacetophenone (BZME), 42.2g triaryl sulfur hexafluorophosphate The onium salt photoinitiator is sequentially added to the above-mentioned acrylate functional resin, and stirred at room temperature until the photoinitiator is completely dissolved.

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Abstract

The invention relates to a hybrid cured light-induced blackened acrylate adhesive which means that a transparent adheisve becomes black under the ultraviolet irradiation by hybrid curing of free radical chain polymerization and positive ion stepwise polymerization. The hybrid cured light-induced blackened acrylate adhesive comprises in parts by mass: 100 parts of acrylic functional resin, 1 to 10parts of a free radical photoinitiator and 2 to 15 parts of a positive ion photoinitiator, wherein the acrylic functional resin means that one end of a molecular chain contains acryloyloxy and the other end of the molecular chain contains a non-hydrogenated pyrrole ring; and a synthesis method comprises the steps as follows: sequentially adding carboxyl pyrrole, epoxy acrylic monoester, a polymerization inhibitor and a catalyst into a reaction kettle and performing a heating reaction in the dry nitrogen atmosphere to reach a designed acid value so as to obtain the hybrid cured light-induced blackened acrylate adhesive. The hybrid cured light-induced blackened acrylate adhesive prepared by the invention is simple in preparation process, high in body strength and good in surface dryness after curing, can give consideration to both the curing thickness and the shading rate, and is more reliable in adhesive property and wider in application range.

Description

technical field [0001] The invention relates to a photoblackened acrylate adhesive based on free radical and cationic hybrid curing control, which belongs to the technical field of functional photocurable materials. Background technique [0002] Due to its fast curing speed, low energy consumption, excellent performance, and environmental friendliness, light-curing adhesives have been rapidly popularized in many industries and electronic fields, and the amount of glue used is increasing year by year. Black light-curing adhesives have more and more applications in the field of electronic optical shading due to their ability to shading. However, due to its light-shielding properties, the black light-curing adhesive affects the transmission of curing light, thereby affecting its curing thickness and surface dryness, which in turn affects its light-shielding rate and body strength. The mechanism of thermal curing is usually used to solve this problem, but because many substrate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/14C08F120/36
CPCC08F120/36C09J133/14
Inventor 王博王建斌陈田安潘光君
Owner YANTAI DARBOND TECH
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