Environmentally-friendly acrylate structural adhesive and preparation method thereof

A technology of acrylate and methacrylate, which is applied in the field of acrylate structural adhesives and its preparation, can solve problems such as failure to meet adhesive performance and application process requirements, sticky surface of the adhesive layer, poor impact resistance, etc., and achieve the elimination of surface adhesives. Effects of stickiness, low product odor, and excellent aging resistance

Active Publication Date: 2019-03-08
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to reduce the odor irritation of current acrylate structural adhesives, people remove the low-boiling point and high-volatility methyl methacrylate in the formula and replace it with high-boiling point and low-volatility acrylate monomers. This approach does reduce the product quality. odor, but it leads to another important defect, that is, the curing speed is slow, and the surface of the cured adhesive layer is sticky, the surface dryness is poor, and the performance and application process requirements of the adhesive cannot be met.
In addition, there is a defect in the use of methyl methacrylate as a formula monomer, the product is brittle and has very poor impact resistance
[0005] Therefore, to solve the three major defects of traditional acrylic structural adhesives, such as strong irritating odor, sticky surface of the adhesive layer after curing, and poor impact resistance, the development of new acrylic structural adhesives is of great importance to improve the technical level of acrylic structural adhesives. impetus

Method used

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  • Environmentally-friendly acrylate structural adhesive and preparation method thereof
  • Environmentally-friendly acrylate structural adhesive and preparation method thereof
  • Environmentally-friendly acrylate structural adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] An environment-friendly acrylic structural adhesive, comprising component A and component B mixed at a volume ratio of 10:1, component A includes 10 parts of hydroxypropyl methacrylate, 45 parts of tetrahydrofuryl methacrylate, methacrylic acid 25 parts, 16 parts of prepolymer, 22 parts of nitrile rubber N41, 5.0 parts of tetramethylthiourea, 0.6 parts of 2,5-di-tert-butyl hydroquinone, 2.0 parts of liquid paraffin; B component includes 28 parts of benzoyl oxide, 30 parts of environmentally friendly plasticizer Benzoflex 2088, 35 parts of polyethylene powder, 17 parts of thixotropic agent fumed silica;

[0042] The preparation method of the prepolymer is as follows: 30 parts of polyether polyol PPG-2000, 10 parts of polyester polyol PS-70L, 9 parts of hydrogenated bisphenol A, 28 parts of isobornyl methacrylate, xylene 16 parts of formaldehyde resin, heat up and stir until all components are dissolved, dehydrate at 110°C, -0.095MPa for 2 hours, cool down to 70°C, add 0....

Embodiment 2

[0044] An environment-friendly acrylic structural adhesive, comprising A component and B component mixed at a volume ratio of 10:1, A component includes 25 parts of hydroxyethyl methacrylate, 28 parts of ethylene glycol dimethacrylate, 16 parts of methacrylic acid, 50 parts of prepolymer, 35 parts of SBS resin D1155, 2.7 parts of triethylamine, 0.01 part of 2-tert-butyl hydroquinone, 1.0 part of polyethylene wax; component B includes tert-butyl 10 parts of hydrogen peroxide, 45 parts of bisphenol F type epoxy resin NPEL-170, 22 parts of polytetrafluoroethylene powder, 5 parts of thixotropic agent fumed silica;

[0045] The preparation method of the prepolymer is as follows: 35 parts of polyolefin polyol R-45HT, 20 parts of polycarbonate diol PCDL-2000, 5 parts of hydrogenated bisphenol A, 19 parts of isobornyl methacrylate, two 11 parts of toluene formaldehyde resin, heated up and stirred until each component was dissolved, dehydrated at 110°C, -0.095MPa for 2 hours, cooled to...

Embodiment 3

[0047] An environment-friendly acrylic structural adhesive, comprising A component and B component mixed at a volume ratio of 10:1, A component includes 17 parts of hydroxypropyl methacrylate, 10 parts of indenyl methacrylate, methacrylic acid 5 parts, 32 parts of prepolymer, 8 parts of ABS resin Blendex 338, 0.5 parts of N,N-diethyl-o-toluidine, 0.3 parts of phenothiazine, 0.1 parts of methyl silicone oil; component B includes benzoic acid peroxide 45 parts of tert-butyl ester, 15 parts of bisphenol A epoxy resin E-51, 8 parts of MBS resin, 25 parts of thixotropic agent fumed silica;

[0048] The preparation method of the prepolymer is as follows: 50 parts of polytetrahydrofuran glycol PTMEG-3000, 20 parts of polyolefin polyol HTBS-II, 2 parts of hydrogenated bisphenol A, 10 parts of isobornyl methacrylate, xylene 6 parts of formaldehyde resin, heat up and stir until all components are dissolved, dehydrate at 100°C and -0.095MPa for 2 hours, cool down to 70°C, add 0.01 part o...

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PUM

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Abstract

The invention relates to an environmentally-friendly acrylate structural adhesive and a preparation method thereof. The prepared acrylate adhesive overcomes the defects of severe irritating odor of atraditional acrylate structural adhesive, sticky surface of an adhesive layer after the structural adhesive is cured and low anti-impact performance, is used in the fields of consumer electronics assembly industries and general industries, not only has relatively low odor and high surface dry performance, but also has high bonding mechanical property and impact resistance, can greatly improve theon-site use environment of an assembly line and improve the production efficiency, and has important pushing significance for increasing the technical level of the acrylate structural adhesive.

Description

technical field [0001] The invention relates to an acrylic structural adhesive and a preparation method thereof, in particular to an acrylic adhesive used in consumer electronics assembly industry and general industrial field, and belongs to the technical field of chemical adhesives. Background technique [0002] Acrylate adhesives have the advantages of fast curing at room temperature, good toughness, good fatigue resistance, and oil-carrying adhesion. They have become an important category of engineering adhesives and have been widely used in industrial and electronic fields. [0003] However, most of the acrylate structural adhesives currently on the market use methyl methacrylate with a low boiling point and high volatility as a monomer. The product has a strong irritating odor, which can easily cause human olfactory and respiratory allergies and even pathological changes, which is harmful to human health and the environment. very serious. At present, with the progress ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J109/02C09J175/14C09J11/04C09J11/06C09J11/08C08G18/32C08G18/42C08G18/44C08G18/48C08G18/54C08G18/62C08G18/67C08G18/73C08G18/75C08G18/76
CPCC08G18/3212C08G18/3215C08G18/4027C08G18/4063C08G18/42C08G18/44C08G18/48C08G18/4854C08G18/54C08G18/6204C08G18/672C08G18/73C08G18/751C08G18/7614C08G18/7671C08L2201/08C08L2205/035C09J11/04C09J11/06C09J11/08C09J109/02C09J175/14C08G18/6607C08G18/664C08L75/14C08L91/06C08L23/06C08K13/02C08K3/36C08K5/13C08L53/02C08L63/00C08L27/18C08L55/02C08L83/04C08L51/04C08K5/18
Inventor 姜贵琳王建斌陈田安解海华
Owner YANTAI DARBOND TECH
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