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POSS-modified long life thermal control coating combination and preparation method thereof

A long-life, composition technology, applied in the coating and other directions, can solve the problems of difficult to meet the thermal control coating, difficult, not long life, etc., to achieve good space environment stability, low vacuum outgassing, strong implementation sexual effect

Inactive Publication Date: 2017-04-26
SHANGHAI INST OF SATELLITE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Due to the serious degradation of the ordinary thermal control coating with silicone resin as the binder after five years of use in orbit, wrinkles, cracks, roughness and even peeling appear on the surface, it is difficult to meet the needs of thermal control coatings under the development of long-life spacecraft in the future
The service life of the space is not long, the stability is not high, the performance is unstable, the ability to withstand the space environment is weak, the design and use time in the space environment is short, and the coating construction is complicated and difficult, and the implementability is weak

Method used

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  • POSS-modified long life thermal control coating combination and preparation method thereof
  • POSS-modified long life thermal control coating combination and preparation method thereof
  • POSS-modified long life thermal control coating combination and preparation method thereof

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preparation example Construction

[0030] The present invention also relates to a method for preparing a POSS modified long-life thermal control coating composition, said method comprising the following steps:

[0031] Step 1, primer coating configuration: the long-life thermal control coating prepared by POSS modified long-life thermal control coating composition, in the modified organic fluorine resin, add zinc oxide powder, mix and stir, add organic solvent, mix, and ultrasonically stir Uniform;

[0032] Step 2, topcoat coating configuration: the long-life thermal control coating prepared by the POSS modified long-life thermal control coating composition is added to the POSS modified multifunctional methyl silicone resin, and zinc oxide powder is added, mixed and stirred, and an organic solvent is added , mixed, and ultrasonically stirred evenly.

[0033]The POSS modified long-life thermal control coating composition coating includes a primer layer and a topcoat layer from the base material; the primer laye...

Embodiment 1

[0043] This embodiment relates to a POSS-modified long-life thermal control coating composition and a preparation method.

[0044] The long-life white thermal control coating of POSS modification of the present embodiment adopts two-component long-life thermal control coating composition, and this coating composition comprises primer coating and topcoat coating; Described primer coating comprises organic solvent a ( Xylene), modified organic fluorine resin and zinc oxide powder; the topcoat coating includes organic solvent b (xylene), POSS modified polyfunctional methyl silicone resin and zinc oxide powder.

[0045] The POSS modified multifunctional methyl silicone resin of this example is modified by the multifunctional methyl silicone resin suitable for use in the space environment; the multifunctional methyl silicone resin is subjected to POSS modification, first one or more The POSS modifier is added to the multifunctional methyl silicone resin, dispersed evenly by ultraso...

Embodiment 2

[0051] This embodiment relates to a POSS-modified long-life thermal control coating composition and a preparation method.

[0052] This embodiment is basically the same as Embodiment 1, the difference is:

[0053] Primer coating configuration: Add zinc oxide powder to the phosphorus-containing modified organic fluorine resin, mix and stir, add butyl acetate, mix, and ultrasonically stir evenly; by mass percentage: the zinc oxide powder in the primer accounts for 1% of the solid content of the coating 60wt%, modified organic fluorine resin accounts for 40wt% of the total coating, the mass ratio of modified organic fluorine resin and modified zinc oxide powder is 60:40, and the amount of butyl acetate diluent is modified zinc oxide powder filler and 0.1 times the total weight of the modified organic fluororesin.

[0054] Topcoat coating preparation: Add zinc oxide powder to POSS modified multifunctional methyl silicone resin, mix and stir, add acetone, mix, and ultrasonically s...

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Abstract

The invention discloses a POSS-modified long life thermal control coating combination and a preparation method thereof. The composition comprises a priming paint, a finish paint, and a substrate; a priming paint organic solvent and modified organic fluororesin and zinc oxide powder with mass ratio of 60-75: 25-40; and an finish paint organic solvent and modified multi functional groups methyl silicone resin and zinc oxide powder with mass ratio of 65-75: 25-35. The prepared POSS-modified long life white thermal control coating can prolong the life of space usage and increases stability, the performance of the long life heat thermal control coating prepared by the coating combination is stable, space environment-resistant capability is stronger, the coating construction is simple and is easy to learn, has strong enforcement performance, has longer design and usage time in space environment, and can satisfy the requirement of high-stability white thermal control coating on the product, the adhesive force through 100 times of temperature impact tests between the temperature of -100-+100 DEG C is good, and the vacuum discharge quantity is low.

Description

technical field [0001] The invention relates to the technical field of thermal control materials, in particular to a POSS modified long-life thermal control coating composition and a preparation method. Background technique [0002] As one of the important guarantee systems of the spacecraft as a whole, the thermal control system is as important as the human body temperature control system. It is not only the premise to ensure the normal operation of the new internal instruments and structures, but also to ensure that the spacecraft can operate in the air. Necessary for stable operation in space. The normal operation of various parts of the spacecraft is specified within a certain temperature range, so it is necessary to control the temperature of the spacecraft’s interior and surface environment within the required range to minimize the temperature change. Therefore, more detailed and in-depth research is needed on the thermal control of spacecraft. At present, the most ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/22C09D7/12C09D183/04C08G77/44
CPCC09D127/22C08G77/44C08K3/22C08K2003/2296C09D7/61C09D183/10
Inventor 李瑜婧刘刚张丽新曹康丽周博潘阳阳
Owner SHANGHAI INST OF SATELLITE EQUIP
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