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Unsymmetric dimethylhydrazine resistant plugging and sealing material as well as preparation method and application

A technology of unsymmetrical dimethylhydrazine resistance and sealing materials, which is applied in the field of materials and processes, can solve the problems of increasing the amount of chopped glass fiber, low toughness, and reduced viscosity, etc., and achieves a wide range of bonding materials, good toughness, and reduced viscosity. The effect of viscosity

Active Publication Date: 2016-08-03
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention overcomes the deficiency of low toughness of common epoxy sealing materials, adopts chopped glass fiber as toughening and solvent-resistant filler; meanwhile, uses alkylsilazane as dispersant to promote the dispersion of chopped glass fiber and increase the strength of chopped glass fiber. The amount of glass fiber added improves the solvent resistance of the epoxy plugging and sealing material, reduces the viscosity of the material before curing, and is easy to apply; the paste material is convenient for vertical and bottom construction, and the plugging and sealing material can be used as an adhesive and before curing. The caulk is convenient to use; it can also be used as a form-in-place pressure plugging and sealing material

Method used

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  • Unsymmetric dimethylhydrazine resistant plugging and sealing material as well as preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The plugging and sealing material resistant to unsymmetrical dimethylhydrazine, including the mass parts of each component: 100 parts of WSR618 epoxy resin with an epoxy equivalent of 192g / mol, 3 parts of KH550 silane coupling agent, and 40 parts of chopped glass fiber 10 parts of imidazole, 10 parts of tetraethylenepentamine.

Embodiment 2

[0029] The preparation method of the unsymmetrical dimethylhydrazine-resistant plugging and sealing material described in Example 1, the preparation process is as follows: 100 parts of WSR618 epoxy resin and KH550 are fully stirred at room temperature (20-25°C) for 0.5h, and then added short Cut 40 parts of glass fiber, and after preliminary mixing, grind 3 times on a three-roll mill. After the glass fiber is evenly dispersed in the resin matrix, the component A of the unsymmetrical dimethylhydrazine-resistant plugging and sealing material is prepared; 10 parts of imidazole and tetraethylenepentamine are mixed evenly to prepare the unsymmetrical dimethylhydrazine-resistant plugging and sealing material. B component of the material.

[0030] When using glue, mix A and B components evenly according to the mass ratio of 100:7.5, and then use it. The prepared dual-resistant unsymmetrical dimethylhydrazine plugging and sealing material aluminum-aluminum bonding has a tensile shear...

Embodiment 3

[0032] A plugging and sealing material resistant to unsymmetrical dimethylhydrazine, comprising the following components in mass parts: 100 parts of WSR618 epoxy resin with an epoxy equivalent of 189 g / mol, 3 parts of KH550 silane coupling agent, and 40 parts of chopped glass fiber Parts; 5 parts of imidazole, 5 parts of tetraethylenepentamine, 10 parts of mercaptan fast curing agent.

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Abstract

The invention provides an unsymmetric dimethylhydrazine resistant plugging and sealing material as well as a preparation method and application. The plugging and sealing material has the beneficial effects that the deficiency that epoxy sealing materials generally have low toughness is overcome; chopped glass fibers are adopted as toughening and anti-solvent fillers; meanwhile, alkyl silazane is adopted as a dispersing agent to promote dispersion of the chopped glass fibers, thus increasing the addition of the chopped glass fibers, improving the solvent resistance of the epoxy plugging and sealing material, reducing the viscosity of the material before curing and facilitating smearing; the pasty material is convenient for vertical surface and bottom surface construction; the plugging and sealing material can be conveniently used as an adhesive or a joint mixture before curing and can be also used as a pressurized plugging and sealing material formed in place.

Description

technical field [0001] The invention belongs to the technical field of materials and processes, and in particular relates to a plugging and sealing material resistant to unsymmetrical dimethylhydrazine, a preparation method and application thereof. Background technique [0002] As a liquid propellant, unsymmetrical dimethylhydrazine is widely used in the military field. As a combustion agent, unsymmetrical dimethylhydrazine is highly corrosive, flammable, explosive, volatile, and highly toxic. Accidents such as leakage, personnel poisoning, and explosions are prone to occur during transportation, use, and operation. These constructions will not only cause major economic losses, but also have extremely serious impacts on the environment. At present, there are three types of plugging and sealing materials on the market, including gel plugging agents, resin plugging agents, and expansive plugging agents, which are widely used in the pipeline industry. These three types of chemi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08K7/14C08K5/544C08G59/50C09K3/10
CPCC08G59/5013C08G59/506C08K5/544C08K7/14C09K3/10C08L63/00
Inventor 江余敏唐波孙春燕李润源王昕
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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