Single-component epoxy adhesive solution for impregnating glass fibers

An epoxy adhesive, one-component technology, used in epoxy resin adhesives, adhesives, fiber processing, etc., can solve problems such as low peel strength

Inactive Publication Date: 2018-06-05
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

One-component glue is easy to produce and has good wettability to metal, but the peel strength is generally low

Method used

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  • Single-component epoxy adhesive solution for impregnating glass fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Preparation of curing agent

[0024] Preliminarily mix the curing agent dicyandiamide, the accelerator and the epoxy resin according to the proportion, and grind it into a paste through a three-roll mill.

[0025] 2. Preparation of rubber

[0026] Weigh the raw materials with the following mass percentages, and fully vacuum stir the raw materials at a temperature of 40-50°C at 300-500 rpm to prepare the rubber compound:

[0027] 618 epoxy resin 20g, Wuxi Resin Factory; 170 epoxy resin 40g, South Asia resin; CTBN861340 toughening agent 30g, Shanghai Jiadida; curing agent dicyandiamide Dyhard 100S 7g, Evonik Degussa; rheology additive AEROSIL380 1g, Evonik Degussa; accelerator PN-23 1.5g, Ajinomoto; silane coupling agent KH-560 0.5g, general purpose.

[0028] 3. Impregnated glass fiber

[0029] Preheat the glue to 40-50°C, then use a brush to brush the glue on the glass fiber cloth that has been cut in advance, and dip it for later use.

Embodiment 2

[0031] 1. Preparation of curing agent

[0032] Preliminarily mix the curing agent dicyandiamide, the accelerator and the epoxy resin according to the proportion, and grind it into a paste through a three-roll mill.

[0033] 2. Preparation of rubber

[0034] Weigh the raw materials with the following mass percentages, and fully vacuum stir the raw materials at a temperature of 40-50°C at 300-500 rpm to prepare the rubber compound:

[0035] 20g of 618 epoxy resin, Wuxi Resin Factory; 40g of 170 epoxy resin, Nanya resin; 30g of MX154 toughening agent, Japan Zhongyuan Chemical; curing agent dicyandiamide Dyhard 100S 7g, Evonik Degussa; rheological additive AEROSIL380 1g, Evonik Degussa; accelerator PN-23 1.5g, Ajinomoto; silane coupling agent KH-560 0.5g, general purpose.

[0036] 3. Impregnated glass fiber

[0037] Preheat the glue to 40-50°C, then use a brush to brush the glue on the glass fiber cloth that has been cut in advance, and dip it for later use.

Embodiment 3

[0039] 1. Preparation of toughening agent

[0040] Preliminarily mix Dow core-shell particles 2670 and bisphenol A epoxy resin 618 at a mass ratio of 1:3, stir and disperse at a high speed at 60-90°C to form a uniform single colloid, which is used as a toughening agent for later use.

[0041] 2. Preparation of curing agent

[0042] Preliminarily mix the curing agent dicyandiamide, the accelerator and the epoxy resin according to the proportion, and grind it into a paste through a three-roll mill.

[0043] 3. Prepare rubber

[0044] Weigh the raw materials with the following mass percentages, and fully vacuum stir the raw materials at a temperature of 40-50°C at 300-500 rpm to prepare the rubber compound:

[0045] 2g of 618 epoxy resin, Wuxi Resin Factory; 40g of 170 epoxy resin, Nanya Resin; 48g of the above-mentioned 1 toughening agent; curing agent dicyandiamide Dyhard 100S 7g, Evonik Degussa; rheological additive AEROSIL380 1g, won Chuang De Gu Sai; accelerator PN-23 1.5...

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Abstract

The invention discloses a single-component epoxy adhesive solution for impregnating glass fibers. The single-component epoxy adhesive solution is prepared by carrying out vacuum mixing on the following raw materials in percentage by weight to form a solution, 35 to 75 percent of epoxy resin, 5 to 20 percent of toughening agent, 4 to 10 percent of curing agent, 0.1 to 1 percent of coupling agent, 0.1 to 2 percent of rheological additive and 1 to 5 percent of accelerant. The epoxy adhesive solution disclosed by the invention has the characteristics that 90-degree peel strength of stainless steels can reach 78.3 N/cm and shear strength at normal temperature can reach 41.5MPa.

Description

technical field [0001] The invention relates to the technical field of epoxy adhesives, in particular to a one-component epoxy glue solution for glass fiber impregnation. Background technique [0002] The railway industry is booming, and many insulating adhesive joints are needed along the railway. We know that the rail itself is a conductor, and it acts as a track circuit on the railway, which is equivalent to a wire. Many functions of the railway are completed by using it, such as railway traffic signals (traffic lights), switch switching, and even train operation control, are all carried out on the rails. Therefore, the rail must be disconnected with an insulating joint to become a switch, and then play a role in track control. [0003] Rail insulation adhesive joints mainly use composite materials of epoxy and glass fiber to form an insulating layer. The production process is two kinds of molding method and brushing method. The first molding method is to use epoxy fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/55D06M15/693D06M13/513D06M15/63D06M15/263D06M15/00C09J163/00C09J11/08C09J11/06
Inventor 栾猛刘龙江欧涛姚其胜
Owner 上海康达新材料科技有限公司
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