Aluminum silicate ceramic fiber structural adhesive film

A technology of aluminum silicate ceramics and fiber structure, which is applied in the direction of adhesives, epoxy resin adhesives, film/sheet adhesives, etc., and can solve the problems of limiting the application range of structural adhesive films, failing to meet manufacturing requirements, and low peel strength. , to achieve the effect of improving toughness and peeling degree, improving brittleness and high peeling strength

Active Publication Date: 2019-01-15
SHANDONG NORTH MODERN CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the structural adhesive films on the market are generally epoxy adhesive films or phenolic modified epoxy adhesive films. The above two types of adhesive films have poor toughness after curing, low peel strength, brittleness, insufficient toughness, and poor low temperature resistance, so they are not suitable for long-term use. The bonding of vibrating and bumpy metal structural parts cannot meet the requirements of high-end national defense, military, aerospace and other high-end equipment; due to the brittleness of epoxy resin, it limits the in-depth study of structural adhesive films. Only limited to nitrile rubber, such as solid nitrile rubber, liquid nitrile rubber, carboxylated nitrile rubber, polyurethane, etc.; the current structural adhesive film generally contains chromium ions, and the presence of chromium ions makes the adhesive film easy to stick at low or normal temperature , limiting the scope of application of the structural adhesive film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Epoxy alcohol-soluble acrylate is prepared from the following raw materials: glycidyl acrylate 15kg, hydroxyethyl methacrylate 5kg, 2-chloroethyl vinyl ether 40kg, isopropanol 85kg, methanol 7kg and benzyl peroxide Acyl 0.5kg; the preparation steps are as follows: in parts by weight, take 30% of the above raw materials and add them to the reactor, react at 78°C for 0.5 hours, and add the remaining raw materials dropwise to the reactor at a rate of 1~3 drops / second , after the dropwise addition, react at 78°C for 1 hour, cool down to below 40°C and discharge to obtain epoxy alcohol-soluble acrylate.

[0029] Preparation of polymer glue: solid epoxy resin E-20 20kg, epoxy alcohol-soluble acrylate 7kg, curing agent tetrahydrophthalic anhydride 3kg, accelerator thiourea 0.05kg and solvent ethyl acetate 40kg;

[0030] The aluminum silicate ceramic fiber paper with a thickness of 0.2mm is immersed in the polymer glue solution, and the aluminum silicate ceramic fiber structura...

Embodiment 2

[0033] Use the epoxy alcohol-soluble acrylate 15kg that embodiment 1 gained, add solid epoxy resin E-1235kg wherein, curing agent hexahydrophthalic anhydride 10kg, promotor N, N'-diethylthiourea 2kg and methyl acetate 70kg, mixed evenly to obtain polymer glue; immerse aluminum silicate ceramic fiber cloth with a thickness of 1.5mm into the polymer glue, and obtain aluminum silicate ceramics through traction, drying, recovery of methyl acetate, cutting and curling Fiber structure adhesive film.

[0034] Under the pressure of 1.0MPa, after curing for 165×0.5h, the shear strength is 45.3MPa, and the peel strength is 93.8N / 2.5cm.

Embodiment 3

[0036] Epoxy alcohol-soluble acrylate is prepared from the following raw materials: glycidyl acrylate 20kg, hydroxyethyl methacrylate 10kg, 2-chloroethyl vinyl ether 45kg, isopropanol 95kg, methanol 12kg and benzyl peroxide Acyl 1kg; the preparation steps are as follows: in parts by weight, get 50% of the above raw materials into the reactor, react at 82°C for 1 hour, and drop the remaining raw materials into the reactor successively at a rate of 1 to 3 drops / second. After the dropwise addition, react at 82°C for 3 hours, cool down to below 40°C and discharge to obtain epoxy alcohol-soluble acrylate;

[0037] Preparation of polymer glue: 20kg of epoxy resin E20, 1kg of o-cresol formaldehyde epoxy resin, 1kg of diglycidyl isophthalate, 8kg of epoxy alcohol-soluble acrylate, 5kg of curing agent tetrahydrophthalic anhydride, accelerator sulfur Urea 0.1kg and solvent ethyl acetate 45kg;

[0038] The aluminum silicate ceramic fiber mat with a thickness of 1.0mm is immersed in the ...

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Abstract

The invention discloses an aluminum silicate ceramic fiber structural adhesive film; aluminum silicate ceramic fibers are immersed into a macromolecular adhesive solution, and the structural adhesivefilm is obtained through traction, drying, solvent recovery, cutting and crimping processes; the aluminum silicate ceramic fibers are aluminum silicate ceramic fiber paper, aluminum silicate ceramic fiber cloth or aluminum silicate ceramic fibrofelt with the thickness of 0.2 mm-1.5 mm. The aluminum silicate ceramic fiber structural adhesive film has good flexibility, no fragile cracking in any bending, no chromium layer, and no need of isolating paper or isolating film in folding or coiling of the adhesive film, can be curled and preserved, does not adhere at medium and low temperature, is cured at high temperature, has the advantages of convenient storage, good high temperature resistance, good toughness of the cured adhesive film, high peeling strength greater than 90 N/2.5 cm, shear strength on 45# steel more than 45 MPa, and good aging resistance, and can be applied in the bonding manufacturing of structural components of high-end equipment such as aerospace, national defense and military industry.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to an aluminum silicate ceramic fiber structural adhesive film. Background technique [0002] At present, the structural adhesive films on the market are generally epoxy adhesive films or phenolic modified epoxy adhesive films. The above two types of adhesive films have poor toughness after curing, low peel strength, brittleness, insufficient toughness, and poor low temperature resistance, so they are not suitable for long-term use. The bonding of vibrating and bumpy metal structural parts cannot meet the requirements of high-end national defense, military, aerospace and other high-end equipment; due to the brittleness of epoxy resin, it limits the in-depth study of structural adhesive films. Only limited to nitrile rubber, such as solid nitrile rubber, liquid nitrile rubber, carboxylated nitrile rubber, polyurethane, etc.; the current structural adhesive film generally contains c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/21C09J163/00C09J129/10
CPCC09J7/21C09J163/00C09J2400/10C09J2463/00C08L29/10
Inventor 聂锡铭韩友泉童鹤胡恂业葛玲娟孔庆媛郭领齐春平孙崇彬
Owner SHANDONG NORTH MODERN CHEM IND
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