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A kind of epoxy adhesive for stone material repair and preparation method thereof

An epoxy adhesive, stone technology, applied in the direction of adhesive, epoxy resin, adhesive type, etc., to achieve the effect of low viscosity, excellent mechanical properties, and good yellowing resistance

Active Publication Date: 2020-07-14
HUNAN MAGPOW ADHESIVE INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when stone processing enterprises process looser white stones such as Ascot White, Snowflake White, Medium Flower White, and Crystal White, they can only choose not to use adhesives for decorative repairs, and discard the plates with cracks, cracks and other defective parts.

Method used

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  • A kind of epoxy adhesive for stone material repair and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Preparation of component A: Add 800g of E-51 epoxy resin to the reactor of the temperature adjustment device, vacuum device, and stirring device, start stirring, add 10g of absolute ethanol, 30g of bisphenol A, and heat up to the material temperature of 60~65 ℃, keep stirring for 1-2 hours until bisphenol A is completely dissolved, cool down to the material temperature of 40~45℃, add 130g allyl glycidyl ether, 30g ethyl silicate, continue stirring for 0.5~1 hour, stop Stir, defoam under -0.07MPa vacuum condition for 3 minutes, remove the vacuum and discharge to obtain component A;

[0019] Preparation of component B: Add 3 mol of hydrogenated m-xylylenediamine and 1 mol of isophoronediamine into the reactor of the stirring device and temperature adjustment system, start stirring, adjust the temperature to 30~40°C, and slowly add 1 mol of olefin Propyl glycidyl ether, the reaction temperature is controlled at 45~55°C, and the dropping time is controlled at 2 hours. After...

Embodiment 2

[0022] Preparation of component A: Add 850g of E-56 epoxy resin to the reactor of the temperature adjustment device, vacuum device, and stirring device, start stirring, add 10g of absolute ethanol, 20g of bisphenol A, and heat up to the material temperature of 60~65 ℃, keep stirring for 1-2 hours until bisphenol A is completely dissolved, cool down to the material temperature of 40~45℃, add 100g allyl glycidyl ether, 20g ethyl silicate, continue stirring for 0.5~1 hour, stop Stir, defoam under -0.07MPa vacuum condition for 3 minutes, remove the vacuum and discharge to obtain component A;

[0023] B component is prepared with embodiment 1;

[0024] The prepared adhesive is mixed and adjusted according to the weight ratio of component A: component B = 4:1, and can be used after stirring evenly.

Embodiment 3

[0026] A component is prepared with embodiment 1;

[0027] Preparation of component B: Add 4 mol of hydrogenated m-xylylenediamine and 1 mol of isophoronediamine into the reactor of the stirring device and temperature adjustment system, start stirring, adjust the temperature to 30-40°C, and slowly add 1 mol of olefin Propyl glycidyl ether, the reaction temperature is controlled at 45~50°C, the dropping time is controlled at 2 hours, after the dropwise addition is completed, the temperature is raised to 60~70°C, the temperature is kept for 2 hours, the temperature is lowered to 30°C, and the material is discharged to obtain a modified alicyclic Amine curing agent;

[0028] The prepared adhesive is mixed and adjusted according to the weight ratio of component A: component B = 5:1, and can be used after stirring evenly.

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Abstract

The invention discloses an epoxy adhesive for stone repairing and a preparation method of the epoxy adhesive. The epoxy adhesive for stone repairing is prepared from a component A and a component B, wherein the component A is prepared from, in percentage by weight, 67%-87% of bisphenol-A epoxy resin, 10%-20% of allyl glycidyl ether, 1%-5% of silicate ester, 1%-5% of bisphenol A and 1%-3% of absolute ethyl alcohol; the component B is a modified alicyclic amine curing agent prepared from raw materials including 1,3-BAC (hydrogenated m-xylylenediamine), IPDA (isophorone diamine) and allyl glycidyl ether. The prepared epoxy adhesive has the characteristics of being low in viscosity, high in adhesion strength, high in adhesive hardness after being cured and easy to polish, is good in yellowingresistance after being cured and is very suitable for defect repairing of surfaces of natural facing stone materials, and repaired parts have no dark spots, dark lines, water stains and water lines.

Description

technical field [0001] The invention relates to an epoxy adhesive for repairing stones, in particular to an epoxy adhesive for repairing defects such as holes, cracks, cracks, ant paths, and chicken claw patterns on the surface of facing stones and a preparation method thereof. Background technique [0002] Natural stone slabs are elegant in texture, clear and beautiful in texture, and are often used as decorative materials for interior and exterior walls, floors, ceilings, window sills, tabletops, and sanitary ware of buildings. With the development of the economy, the improvement of people's living standards and the improvement of cultural literacy, the number of such decorative materials is increasing. However, all kinds of natural stone (marble, granite, limestone, etc.) have defects in the material itself, and when used as a decorative material, defects such as surface holes, cracks, cracks, ant roads, and chicken feet must be repaired. [0003] Epoxy resin contains a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C09J11/04C08G59/50
CPCC08G59/5026C08K3/36C08K2201/011C09J11/04C09J163/00
Inventor 袁媛刘辉
Owner HUNAN MAGPOW ADHESIVE INDS