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Liquid rubber based adhesive containing Nano montmorillonite and preparation method

A nano-montmorillonite, liquid rubber technology, applied in the direction of adhesives, adhesive types, conjugated diene adhesives, etc., can solve the problem of low bonding strength of hydroxyl-terminated polybutadiene liquid rubber, which affects the popularization and use. , the problem of high production cost, to achieve the effect of reduced production cost, excellent adhesion performance and broad application prospects

Inactive Publication Date: 2006-04-19
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, due to the disadvantages of low bonding strength and high production cost of hydroxyl-terminated polybutadiene liquid rubber, its popularization and use have been affected.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 (comparative example, without organic nano-montmorillonite)

[0032] Mix 100 parts of hydroxyl-terminated polybutadiene liquid rubber, 2-10 parts of organic nano-montmorillonite, 16 parts of toluene diisocyanate and 0.15 part of dibutyltin dilaurate, stir and mix, and remove them at 60°C under 0.07MPa vacuum. The product was obtained by reacting for 2.5 hours.

[0033] The liquid rubber adhesive containing nano-montmorillonite was evenly coated on a 200mm×25mm PVC artificial leather, placed in an oven at 95° C., aged for 5 hours, and cooled to room temperature. According to GB / T 2791~1995, on the XLW-1 intelligent electronic tensile testing machine, carry out the T-type peel strength test at the speed of 100mm / min. Its performance is shown in Table 1.

Embodiment 2

[0034] Example 2 (containing organic nano-montmorillonite)

[0035] First, 25 parts of montmorillonite with a cation exchange capacity of 120 meq were dispersed into 800 parts of deionized water and stirred to form a stable suspension system A;

[0036] Dissolve 16 parts of dodecyl trimethyl ammonium bromide in 150 parts of deionized water, add 8 parts of sulfuric acid, stir and emulsify to form evenly dispersed emulsion B;

[0037] The suspension system A was heated to 70°C, the emulsion B was added to the suspension system A, and after stirring for 2 hours, the organic nano-montmorillonite was collected by a conventional method;

[0038] Mix 100 parts of hydroxyl-terminated polybutadiene liquid rubber, 2 parts of organic nano-montmorillonite, 6 parts of toluene diisocyanate and 0.05 part of dibutyltin dilaurate, stir and mix, dehydrate and react at 50°C and 0.08MPa vacuum. 2 hours to get the product.

[0039] The liquid rubber adhesive containing nano-montmor...

Embodiment 3

[0040] Example 3 (containing organic nano-montmorillonite)

[0041] First, disperse 50 parts of montmorillonite with a cation exchange capacity of 50 into 1200 parts of deionized water and stir to form a stable suspension system A;

[0042] Dissolve 10 parts of octadecyldimethylbenzyl ammonium chloride in 100 parts of deionized water, add 5 parts of hydrochloric acid, stir and emulsify to form evenly dispersed emulsion B;

[0043] The suspension system A was heated to 80°C, the emulsion B was added to the suspension system A, and after stirring for 3 hours, the organic nano-montmorillonite was collected by a conventional method;

[0044] Mix 100 parts of hydroxyl-terminated polybutadiene liquid rubber, 4 parts of organic nano-montmorillonite, 16 parts of toluene diisocyanate and 0.15 part of dibutyltin dilaurate, stir and mix, degas at 60°C, 0.07MPa vacuum, After 2.5 hours of reaction, the product was obtained.

[0045] The liquid rubber adhesive containing nan...

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PUM

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Abstract

A liquid rubber adhesive containing montmorillonite nanoparticles with high T-type stripping strength and adhesion is prepared through cationic exchange reaction of montmorillonite, intercalation combining with hydroxy terminated polybutanediene liquid rubber, and cross-linking by toluene diisocyanate (TDI) to obtain nano-montmorillonite / polyurethane / hydroxy terminated polybutanediene liquid rubber adhesive.

Description

technical field [0001] The invention relates to an adhesive, in particular to an organic nano-montmorillonite / polyurethane / hydroxyl-terminated polybutadiene liquid rubber adhesive and a preparation method thereof. Background technique [0002] Liquid rubber is a viscous polymer with a relative molecular mass of less than 10,000 and fluidity at room temperature, which can produce a three-dimensional network structure. Adhesives are one of its most valuable application fields. [0003] Hydroxyl Terminated Polybutadiene (HTPB) is a kind of telechelic liquid rubber, which is obtained by polymerization of butadiene and hydrogen peroxide as raw materials. Its main chain is a non-polar carbon-carbon structure, and two active hydroxyl functional groups are located at both ends of the molecular chain. [0004] In the aerospace industry, hydroxyl-terminated polybutadiene liquid rubber, carboxyl-terminated nitrile-butadiene liquid rubber, etc. are used as binders for solid propellants...

Claims

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Application Information

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IPC IPC(8): C09J109/00C09J11/02
Inventor 陈月辉王锦成
Owner SHANGHAI UNIV OF ENG SCI
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