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Adhesive and preparation method thereof

A technology of adhesive and acid binding agent, applied in the field of adhesive and its preparation, can solve the problems of poor economic benefit, unpredictable surface treatment effect, damage to the base material, etc., and achieves simple use steps and excellent adhesion. Effects, effects with less binary by-products

Active Publication Date: 2020-04-24
湖北新蓝天新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the traditional method is used, there are the following problems: (1) need to reclaim solvent, acid-binding agent and process H 2 S tail gas needs to invest in additional equipment and sites, with large investment, heavy pollution, and high safety risks; (2) only small volume of substrates can be processed, and a lot of manual operations are required, the steps are cumbersome, energy-consuming, time-consuming, and economical The benefit is poor; (3) the base material should be subjected to surface modification for a long time at room temperature, low temperature and high temperature environment successively, which will cause damage to the base material and cause physical and mechanical properties to be affected; (4) side reactions are inevitable, which will lead to Final finish not as expected with no remedial action

Method used

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  • Adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Under the protection of nitrogen, dissolve 22.5g of aminopropyltriethoxysilane in 120mL of anhydrous acetone, control the temperature of the three-necked flask in an ice bath to -5°C, and first add 16.0g of N,N-diisopropylethyl Diamine, drop the acetone solution of aminopropyltriethoxysilane and 18.5g of cyanuric chloride into the three-necked bottle at the same time, and control the rate of addition to maintain the concentration of aminopropyltriethoxysilane and cyanuric chloride in the three-necked bottle. The molar ratio is 1:1, the dropwise addition is completed in 2 hours, reacted at -5°C for 4 hours, then filtered to remove the acid-binding agent, and purified to obtain an intermediate product (35.5g) and a binary by-product (1.1g), measured: intermediate product The structural formula is The yield is 96.2%, and the structural formula of the binary by-product is The yield was 3.0%.

[0032] (2) Add 35.5g of the intermediate product prepared in step (1), 11...

Embodiment 2

[0035] (1) Under the protection of nitrogen, dissolve 23.5g of aminopropyltriethoxysilane in 120mL of anhydrous acetone, control the temperature of the there-necked flask to 0°C in an ice bath, first add 6.6g of ethylenediamine, and The acetone solution of oxysilane and 18.5g of cyanuric chloride were dropped into the three-necked flask at the same time, and the dropping rate was controlled to maintain the molar ratio of aminopropyltriethoxysilane and cyanuric chloride in the three-necked flask as 1.05:1, 2h After completion of the dropwise addition, react at 0°C for 4h, then filter to remove the acid-binding agent, and purify to obtain 35.1g of intermediate product and 1.6g of binary by-product, measured: the structural formula of the intermediate product is The yield is 95.1%, and the structural formula of the binary by-product is The yield was 4.4%.

[0036] (2) Add 35.1g of the intermediate product, 11.5g of anhydrous sodium hydrosulfide and 0.7g of tetrabutylammonium b...

Embodiment 3

[0039] Add bis-[γ-(triethoxysilyl)propyl]tetrasulfide (i.e. Si-69), aminopropyltriethoxysilane (i.e. KH-550), the adhesive prepared in Example 1 (referred to as the target product), compared with the blank control group without coupling agent, its crosslinking density, elongation at break and wear resistance test data are shown in the table 1 shows:

[0040] Table 1 The crosslink density, elongation at break and wear resistance test data of NBR with different coupling agents

[0041] Numbering 1# 2# 3# 4# coupling agent none Si-69 KH-550 target product Crosslink density (%) 25.2 27.6 29.7 30.3 Elongation at break (%) 815.4 672.8 501.2 420.1 Acron wear (cm 3 )

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Abstract

The invention discloses a preparation method of an adhesive, which comprises the following steps: under anaerobic and anhydrous conditions, reacting aminopropyltriethoxysilane with cyanuric chloride in a molar ratio of (1.0-1.05): 1 in an organic solvent at -20-10 DEG C for 3-6 hours, filtering to remove an acid-binding agent, and purifying to obtain an intermediate product; refluxing the intermediate product, sodium hydrosulfide and a phase transfer catalyst in the organic solvent at 80-100 DEG C for 8-12 hours to obtain the adhesive; wherein the molar ratio of the intermediate product to sodium hydrosulfide is 1: (2.1-2.2). When the method is applied, the synthesized product can be directly impregnated or sprayed with a base material to achieve an excellent bonding effect with an organicmatter, the product is not limited by the volume and shape of the base material, a large amount of manual operation is not needed, the steps are simple, energy consumption is low, and consumed time is short.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis, and relates to an adhesive and a preparation method thereof. Background technique [0002] Triazine dithiol molecules can be polymerized to form disulfide bonds (-S-S-), thereby forming a s-triazine dithiol polymer film with anti-corrosion and anti-friction properties on the surface of the substrate. Microbes and enzymes have a good immobilization effect, and have broad prospects in biosensors, chemical sensors, and enzyme electrodes. [0003] The most common use of silane coupling agents is to couple organic polymers and inorganic fillers, enhance their cohesiveness, and improve the mechanical, water resistance, and anti-aging properties of products. They are often used in glass fiber, casting, textile additives, and insulating materials. , Adhesive industry; it can also be used for surface modification of metals and metal oxides, such as treating gold, silver, copper and other metal ...

Claims

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Application Information

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IPC IPC(8): C07F7/18C08L9/02C08K3/36C08K5/548
CPCC07F7/1804C07F7/1892C08K3/36C08K5/5477C08L9/02Y02E60/10
Inventor 余波李胜杰冯琼华肖俊平
Owner 湖北新蓝天新材料股份有限公司