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Epoxy glue membrane

A technology of epoxy adhesive film and epoxy value, which can be used in epoxy resin adhesives, adhesives, film/sheet adhesives, etc., and can solve the problems of low shear strength and peel strength of aluminum materials.

Active Publication Date: 2013-11-20
上海康达新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, because the existing epoxy film uses thermoplastic resin and rubber elastomer, the shear strength and peel strength against aluminum are low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Preparation of toughening agent

[0022] After mixing 78g of epoxy resin 618, 1.44g of methacrylic acid, and 0.6g of triphenylphosphine in the reactor, react at a speed of 300-500 rpm and a temperature of 110°C for 1.5 hours, and then 200 rpm 19.6g of octyl acrylate and 0.64g of azobisisobutyronitrile were added dropwise at the same time at a rotating speed. After the dropping, the temperature was raised to 130°C and the rotating speed was 300-500 rpm to continue the reaction for 30 minutes and discharge.

[0023] 2. Preparation of rubber

[0024] Weigh the raw materials with the following mass percentages, and fully stir the raw materials at a temperature of 50-60°C at 300-500 rpm to prepare the rubber compound:

[0025] 40g of bisphenol A epoxy resin with an epoxy value of 0.2mol / 100g, 20g of bisphenol A epoxy resin with an epoxy value of 0.44mol / 100g, 30g of the toughening agent prepared in step 1, curing agent Dyhard100S6g, rheology Auxiliary agent AEROSIL3803g...

Embodiment 2

[0029] 1. Preparation of toughening agent

[0030] After mixing 73g of epoxy resin 618, 1.2g of methacrylic acid and 0.6g of triphenylphosphine in the reactor, react at a speed of 300-500 rpm and a temperature of 110°C-130°C for 2 hours, then 200-300 18g of octyl acrylate and 0.7g of azobisisobutyronitrile were added dropwise at the same time at a rotation speed of 120°C to 140°C, and the speed of rotation was 300 to 500rpm to continue the reaction for 20 minutes.

[0031] 2. Preparation of rubber

[0032] Weigh the raw materials with the following mass percentages, and fully stir the raw materials at a temperature of 50-60°C at 300-500 rpm to prepare the rubber compound:

[0033] 30g of bisphenol A epoxy resin with an epoxy value of 0.2mol / 100g, 20g of bisphenol A epoxy resin with an epoxy value of 0.44mol / 100g, 40g of the toughening agent prepared in step 1, curing agent Dyhard100S7g, rheology Auxiliary agent AEROSIL3802g, accelerator Dyhard3000.5g, silane coupling agent 0...

Embodiment 3

[0037] 1. Preparation of toughening agent

[0038] After mixing 75g of epoxy resin 618, 1.3g of methacrylic acid, and 0.75g of triphenylphosphine in the reactor, react at a speed of 300-500 rpm and a temperature of 110°C-130°C for 1.5-3 hours, and then 200 Add 19g of octyl acrylate and 0.7g of azobisisobutyronitrile dropwise at a speed of ~300 rpm. After the addition is complete, raise the temperature to 120°C-140°C and continue the reaction at a speed of 300-500 rpm for 45 minutes. .

[0039] 2. Preparation of rubber

[0040] Weigh the raw materials with the following mass percentages, and fully stir the raw materials at a temperature of 50-60°C at 300-500 rpm to prepare the rubber compound:

[0041] 20g of bisphenol A epoxy resin with an epoxy value of 0.2mol / 100g, 20g of bisphenol A epoxy resin with an epoxy value of 0.44mol / 100g, 50g of the toughening agent prepared in step 1, and 7.5g of curing agent Dyhard100S, Rheology additive AEROSIL3801.5g, Dyhard5000.5g, silane c...

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Abstract

The invention discloses an epoxy glue membrane. The epoxy glue membrane is obtained by pressing 35-75wt% of an epoxy resin, 20-60wt% of a flexibilizer, 3-10wt% of a curing agent, 0.5-3wt% of a coupling agent, 0.5-3wt% of a rheological auxiliary agent and 1-3wt% of a promoter. A preparation method of the flexibilizer comprises the following step that 73-78.3 parts of the epoxy resin 618, 1-1.44 parts of methacrylic acid and 0.6-0.9 parts of triphenyl phosphine are mixed in a reactor; the mixture undergoes a reaction at a rotation rate of 300-500r / min at a temperature of 110-130 DEG C for 1.5-3h; 18-20 parts of ethyl hexyl acrylate and 0.64-1 part of azodiisobutyronitrile are dropwisely added into the reaction products with stirring at a rotation rate of 200-300r / min; the mixture undergoes a reaction at a temperature of 120-140 DEG C at a rotation rate of 300-500r / min for 20-45min; and the products are discharged. Aiming at an aluminum material, the epoxy glue membrane has high-temperature shearing strength of 14(MPA@100 DEG C) and 90-degree peel strength of 70 (DEG C) b.

Description

technical field [0001] The invention relates to the technical field of epoxy adhesives, in particular to an epoxy adhesive film. Background technique [0002] The aluminum honeycomb panels produced with epoxy resin room temperature curing adhesives have poor adhesion and weather resistance, and the adhesion performance drops sharply after one year of use. Aluminum honeycomb panels produced by this process are not suitable for outdoor use, but can be used as decorative partitions indoors. [0003] The weather resistance of epoxy adhesive film is better than that of epoxy adhesive, and epoxy adhesive film contains latent curing agent, which is toughened by high temperature resistant thermoplastic resin or elastomer, requires pressure and high / medium temperature curing, and the adhesive layer is easy to control , The thickness is thin and uniform, so the bonding strength is very high, the toughness is good, and the durability is excellent. [0004] The operation process of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00C09J163/00C09J163/02C09J11/08C08F283/10
Inventor 刘龙江栾猛宋燕燕邱磊
Owner 上海康达新材料科技有限公司
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