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Composite plugging agent for space station

A plugging agent and space station technology, applied in the direction of adhesive additives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problem of decreased plugging effect, inability to suspend and disperse nano fillers, and reduced curing strength and other problems, to achieve the effect of simple storage and use, shortened mixing and curing time, and increased curing strength

Active Publication Date: 2020-04-28
BEIJING INST OF AEROSPACE TESTING TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existence of these suspending dispersants will cause a decrease in the plugging effect, mainly due to the reduction of curing strength and the extension of curing time.
However, nanofillers cannot be kept suspended and dispersed without them, so they have to be added

Method used

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  • Composite plugging agent for space station
  • Composite plugging agent for space station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] Mix epoxy dendrites, diluents, nano-powder fillers, suspension dispersants, toughening agents and micron or millimeter fillers uniformly at room temperature, mix them into component A, and store them at room temperature; mix curing agent, coupling agent, accelerator agent, micron-sized filler acicular magnetite microrods, mechanically stirred and mixed at room temperature, and stored at room temperature.

[0040] Formula Table

[0041]

[0042] The A and B components of the above plugging agent were left still at room temperature for 3 months, and the sedimentation and stratification phenomenon occurred in Example 1, Example 2, and the comparative example. The above A and B components were given weak vibrations, and it was found that all The layered settlement phenomenon disappeared in Examples and Comparative Examples.

[0043] After mixing components A and B, the plugging performance test is carried out, and the performance is as follows:

[0044]

[0045] The...

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Abstract

The invention relates to a composite plugging agent for a space station. The composite plugging agent is divided into a part A and a part B, wherein specifically the part A comprises, by weight. 10-30parts of an epoxy resin, 1-5 parts of a diluent, 0.1-5 parts of a nano powder filler, 0.3-0.5 part of a suspension dispersant, 5-20 parts of a toughening agent, and 1-15 parts of a micron-scale or millimeter-scale filler, and the part B comprises, by weight, 10-50 parts of a curing agent, 5-25 parts of a coupling agent, 1-10 parts of an accelerant, and 1-15 parts of a micron-scale or millimeter-scale filler. According to the composite plugging agent for the space station, the use amount of the suspension dispersing agent is greatly reduced, good suspension and good dispersion of the nano-powder filler can still be achieved, the curing strength of the plugging agent is improved, and the curing time is shortened.

Description

technical field [0001] The invention belongs to the technical field of leak-stopping materials, and in particular relates to a composite leak-stopping agent for space stations. Background technique [0002] The plugging agent is a binder that directly isolates the leakage medium from the outside world. It needs to have excellent chemical stability, be able to withstand the use temperature, have good cohesive force, dense texture, strong impermeability, high strength after curing, and It can meet the requirements of rapid curing in technical operation. [0003] The fluid circuit system of the space station contains a large amount of fluid medium, which plays a key role in eliminating the heat and humidity load of astronauts and controlling the temperature and humidity of the sealed cabin. In the harsh outer space environment, there is a possibility of accidental damage to the fluid pipeline. Once the liquid leaks, it will definitely pose a potential threat to the space stati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/04C09J11/04C09J11/08C09J11/06C09K3/10C09K3/12
CPCC09J163/04C09J11/04C09J11/08C09J11/06C09K3/10C09K3/12C08L2205/03C08K2003/2241C08K2201/011C08L47/00C08K13/02C08K3/36C08K5/20C08K3/22C08L29/04
Inventor 黄继庆程永喜黄磊索志勇温婧方涛郭伟周悦乔心全顾佳崎
Owner BEIJING INST OF AEROSPACE TESTING TECH
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