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Low-water-absorptivity acrylate structural adhesive and preparation method thereof

An acrylate and acrylate-based technology, applied in the field of two-component acrylate structural adhesives and their preparation, can solve the problems of lower water absorption, poor water resistance or humidity environment performance, high water absorption, etc., and achieve good storage stability, Ease of use and high adhesion

Inactive Publication Date: 2013-01-02
BEIJING HYSTIC NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the increasing application market of two-component acrylic structural adhesives, especially in the application of consumer electronics and plastic bonding, the existing commercial two-component Some deficiencies of acrylic structural adhesive products have gradually emerged. Among them, the more prominent disadvantage is the high water absorption rate, which is related to the poor performance of water resistance or moisture environment. The former directly affects the adhesive strength of plastics, while the latter is serious. It affects the long-term reliability of the bonding structure. Therefore, maintaining many physical and chemical properties of the two-component acrylic structural adhesive while effectively reducing its bulk water absorption is of great significance for further expanding the application range of this type of structural adhesive.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] component name Component A (number of servings) Component B (number of servings) Methyl methacrylate 30 30 2-Phenoxyethyl methacrylate 15 15 lauryl methacrylate 10 10 urethane acrylate 8 6 epoxy acrylate 5 7 ABS resin 20 SBS resin 20 Quinol 0.02 0.02 2,6-di-tert-butyl-4-methylphenol 0.1 0.1 methyl ethyl ketone peroxide 4.2 Vinylthiourea 3.3 N,N-Dimethyl-p-toluidine 0.8 Vanadium acetylacetonate 0.01 polyethylene wax 3.7 3.8 Organic bentonite 2.2 2.2 paraffin 1.8 1.8

[0043] Preparation Process:

[0044] Preparation of component A: Accurately weigh methyl methacrylate, 2-phenoxyethyl methacrylate, lauryl methacrylate, polyurethane acrylate and epoxy acrylate, mix well; add hydroquinone and 2 , Mix 6-di-tert-butyl-4-methylphenol evenly; then add ABS resin to dissolve completely; then add methyl ethyl ketone peroxide and p...

Embodiment 2

[0047] component name Component A (number of servings) Component B (number of servings) Methyl methacrylate 43 43 Hydroxyethyl methacrylate 2 2 Methacrylate 10 10 Neoprene 5 SBS resin 33 PMMA resin 29 p-benzoquinone 0.03 0.02 2,6-di-tert-butyl-4-methylphenol 0.1 0.1 Cumene Hydroperoxide 4.1 Tetramethylthiourea 2.5 Cobalt naphthenate 0.5 polyethylene wax 3.8 3.9 fumed silica 2 2 paraffin 2 2

[0048] Preparation Process:

[0049] Preparation of component A: Accurately weigh methyl methacrylate, hydroxyethyl methacrylate, and methacrylic acid, and mix well; add p-benzoquinone and 2,6-di-tert-butyl-4-methylphenol and mix well; Then add SBS resin to dissolve it completely; then add cumene hydroperoxide and polyethylene wax and mix well; then add fumed silica and paraffin after proper heating, and stir well; finally vacuum defoaming, discharge That...

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PUM

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Abstract

The invention relates to a double-component acrylate structural adhesive which is prepared by mixing a component A and a component B in a mass ratio of 1:1, wherein the component A is composed of 30-70 parts of acrylate monomer, 10-40 parts of toughening resin, 0.1-10 parts of initiator, 0.01-1 part of stabilizer, 0-6 parts of thixotropic agent and 0.1-2 parts of paraffin; and the component B is composed of 30-70 parts of acrylate monomer, 10-40 parts of toughening resin, 0.1-5 parts of accelerator, 0.01-1 part of stabilizer, 0-6 parts of thixotropic agent and 0.1-2 parts of paraffin. The adhesive provided by the invention has the advantages of low water absorptivity (lower than 2%), high curing speed, high initial adhesive force and high storage stability, and is convenient to use. The bonding strength of the bonded structural sample piece can still have the retentivity of 70% or so after the structural sample piece is boiled in water for 24 hours.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to a two-component acrylic structural adhesive with low water absorption and a preparation method thereof. Background technique [0002] Two-component acrylate adhesives have the advantages of fast curing, high strength, good toughness, and strong adaptability, and have been widely used in many fields. It can replace traditional welding, riveting, screwing and other processes, and has the advantages of convenient use, fast curing speed and high bonding strength; [0003] With the increasing application market of two-component acrylic structural adhesives, especially in the application of consumer electronics and plastic bonding, some shortcomings of existing commercial two-component acrylic structural adhesive products are gradually emerging. Among them, the most prominent disadvantage is the high water absorption rate, which is related to the poor performance of wate...

Claims

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Application Information

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IPC IPC(8): C09J133/12C09J175/14C09J163/10C09J155/02C09J153/02C09J111/00C08F220/14
Inventor 李守平李建华白晗史伟同
Owner BEIJING HYSTIC NEW MATERIALS
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