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Two-component hybrid adhesive and preparation method thereof

A technology of adhesives and catalysts, applied in the field of two-component hybrid adhesives and its preparation, can solve problems such as poor storage stability, inability to fully mix uniform performance and quality consistency and uniformity, and poor bonding performance, etc. question

Pending Publication Date: 2021-04-20
东莞市瑞朗电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional adhesives generally use one-component silica gel or modified silica gel, and the single-component adhesive has a slow curing speed due to the lack of moisture inside, and all components are mixed and packaged in a sealed container (such as a hose or a sealed cylinder), its storage stability is poor, and it is very easy to be affected by moisture and affect its performance; at this stage, two-component adhesives have been introduced, but due to the different composition of the main chain of the two components, the relative relationship between the two components Poor solubility, cannot be fully mixed to ensure the consistency and uniformity of performance and quality, and one of the components has not been dewatered, resulting in poor bonding performance, slow curing in deep layers, mechanical properties, paintability, fire resistance Disadvantages of poor combustion performance
[0003] Therefore, how to solve the problems of slow deep curing of single-component adhesives and poor compatibility of two-component adhesives, and then optimize the hybrid effect of room temperature moisture curing of two-component adhesives, so as to achieve rapid deep curing , adhesion and mechanical strength and other functions have become the main technical problems currently existing

Method used

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  • Two-component hybrid adhesive and preparation method thereof
  • Two-component hybrid adhesive and preparation method thereof
  • Two-component hybrid adhesive and preparation method thereof

Examples

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preparation example Construction

[0031] see Figure 1 to Figure 5 , the preparation method of a kind of two-component hybrid adhesive provided by the present invention, its preparation method comprises the following steps:

[0032] Step 1, prepare component A under the first dehydration condition according to the formula quantity;

[0033] Step 2, prepare component B under the second dehydration condition according to the formula quantity;

[0034] In step 3, the component A and the component B are uniformly mixed at a volume ratio of 1:1-4 to obtain a two-component hybrid adhesive.

[0035] Specifically, the volume ratio of the component A to the component B can be adjusted according to the actual use of the two-component hybrid adhesive, such as its operating time, curing speed, strength, hardness, etc. 1:1, 1:2 or 1:4; when the volume ratio is 1:1, the two-component hybrid adhesive has a short working time and fast curing speed; when the volume ratio is 1:2, its The strength and hardness of the colloid ...

Embodiment 1

[0064] Example 1: This example provides a method for preparing a two-component hybrid adhesive, which includes the following steps:

[0065] Step 1, 500g of hydroxyl-terminated polydimethylsiloxane with a viscosity of 5000mPa·s, 50g of dimethyl silicone oil with a viscosity of 50mPa·s, 20g of dimethyl silicone oil with a specific surface area of ​​150m 2 / g of fumed silica, 200g of fatty acid-treated nano calcium carbonate, 100g of calcium carbonate with a particle size of 3000 mesh, 300g of aluminum hydroxide with a particle size of 5000 mesh, and 20g of anatase titanium dioxide were stirred and dehydrated in vacuum at 130°C for 3 hours. Cool to room temperature to obtain the first mixture; under vacuum environment, add 20g vinyltrimethoxysilane and 30g methyltrimethoxysilane to the first mixture and stir for 30 minutes, then add 5g gamma-aminopropyl triethyl Oxysilane, 5g γ-(2,3-epoxypropoxy)propyltrimethoxysilane and stirred for 20 minutes, finally added 12g of bis(ethyl ac...

Embodiment 2

[0073] Example 2: This example provides a method for preparing a two-component hybrid adhesive, which includes the following steps:

[0074] Step 1, 500g of trimethoxy polydimethylsiloxane with a viscosity of 20000mPa.s, 100g of simethicone with a viscosity of 50mPa.s, and 20g of dimethyl silicone oil with a specific surface area of ​​150m 2 / g of fumed silica, 150g of fatty acid-treated nano calcium carbonate, 200g of calcium carbonate with a particle size of 3000 mesh, 400g of aluminum hydroxide with a particle size of 5000 mesh, and 20g of anatase titanium dioxide were stirred and dehydrated in vacuum at 130°C for 3 hours. Cool to room temperature to obtain the first mixture; under vacuum environment, add 20g of vinyltrimethoxysilane and 35g of methyltrimethoxysilane to the first mixture and stir for 30 minutes, then add 8g of γ-aminopropyl triethyl Oxysilane, 8g γ-(2,3-glycidoxy) propyltrimethoxysilane and stirred for 20 minutes, finally added 12g of tetraisopropyl titanat...

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Abstract

The invention discloses a preparation method of a two-component hybrid adhesive. The preparation method comprises the following steps: 1) preparing a component A according to a formula ratio under a first dehydration condition; 2) preparing a component B according to the formula ratio under a second dehydration condition; and 3) uniformly mixing the component A and the component B according to a volume ratio of 1: (1-4) to obtain the double-component hybrid adhesive. The invention also discloses the two-component hybrid adhesive. According to the invention, the volume ratio of the component A to the component B can be adjusted according to the actual use condition of the double-component hybrid adhesive, such as the requirements on the operable time, the curing speed, the strength, the hardness and the like, so as to adapt to different performance requirements; and the component A and the component B can be hybridized, cured and crosslinked with each other to form a more complex spatial interpenetrating network structure, have more excellent stability and mechanical strength than a single cured network structure, can make up for the respective defects of an adhesive system adopting a single component, and can reinforce the respective advantages of the component A and the component B.

Description

technical field [0001] The invention relates to the technical field of adhesive production, in particular to a two-component hybrid adhesive and a preparation method thereof. Background technique [0002] Traditional adhesives generally use one-component silica gel or modified silica gel, and the single-component adhesive has a slow curing speed due to the lack of moisture inside, and all components are mixed and packaged in a sealed container (such as a hose or a sealed cylinder), its storage stability is poor, and it is very easy to be affected by moisture and affect its performance; at this stage, two-component adhesives have been introduced, but due to the different composition of the main chain of the two components, the relative relationship between the two components Poor solubility, cannot be fully mixed to ensure the consistency and uniformity of performance and quality, and one of the components has not been dewatered, resulting in poor bonding performance, slow cu...

Claims

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Application Information

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IPC IPC(8): C09J171/00C09J183/04C09J11/04C09J11/06
Inventor 饶康辉饶海辉兰品旭付国昌
Owner 东莞市瑞朗电子有限公司
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