Antistatic thermal control coating composition and its preparation method and application

An antistatic and composition technology, applied in the field of antistatic thermal control coating composition and its preparation, can solve the problems of spacecraft abnormality, failure, discharge, etc., and achieves simple construction, low vacuum outgassing, and good coating conductivity. Effect

CN104774510BActive Publication Date: 2017-05-03SHANGHAI INST OF SATELLITE EQUIP
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-05-03

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an antistatic thermal control coating composition, a preparation method and applications thereof. The coating composition comprises priming paint and finish paint. The priming paint is composed of a matrix namely organic fluorine resin and a filling material namely modified zinc oxide powder; wherein the zinc oxide is capable of forming vertical channels in the priming paint layer. The finish paint is composed of a matrix namely methyl silicone resin with multiple functional groups and a filling material namely modified zinc oxide powder; wherein part of the filling material penetrates the interface between the priming paint layer and the finish paint layer. The prepared antistatic thermal control coating has a white color, a thickness of 130 to 200 [mu]m, a solar absorption ratio of 0.20 to 0.25, a hemispherical emissivity of 0.85 to 0.91, a total mass loss (TML) not more than 1%, collectable volatile condensed mass (CVCM) not more than 0.1%, and a volume resistivity ([rho]v) not more than 107 [omega].m. The coating does not have the phenomenon of cracking, peeling, bubbling, and fading after 100 times of high-low temperature thermal cycle experiments in a temperature range of -100 to 100 DEG C, the optical properties of the coating is stable, and the adhesive force of the coating is high.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of thermal control materials, in particular to an antistatic thermal control coating composition and a preparation method and application thereof. 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,...

Examples

Embodiment 1

[0035] This embodiment relates to an antistatic thermal control coating composition and its preparation method, and the application of the antistatic thermal control coating composition in the preparation of a new antistatic white thermal control coating.

[0036] The novel antistatic white thermal control coating of the present embodiment is as figure 1 As shown, the coating is upward from the base material 3 and is composed of two layers of coatings with different components; the bottom coating is called the primer layer 2, which is composed of modified organic fluorine resin and zinc oxide with a special spatial configuration; coating The coating on the surface becomes the topcoat layer 1, which is composed of multifunctional methyl silicone resin and modified zinc oxide.

[0037] The novel antistatic white thermal control coating of the present embodiment adopts two-component antistatic thermal control coating composition, and this coating composition comprises primer coat...

Embodiment 2

[0045] This embodiment relates to an antistatic thermal control coating composition and its preparation method, and the application of the antistatic thermal control coating composition in the preparation of a new antistatic white thermal control coating.

[0046] This embodiment is basically the same as Embodiment 1, the difference is:

[0047] 1) Primer coating preparation: Add modified 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: modify zinc oxide in the primer The powder accounts for 60wt% of the solid content of the coating, the modified organic fluororesin accounts for 40wt% of the total coating, the mass ratio of the modified organic fluororesin and the modified zinc oxide powder is 60:40, and the butyl acetate diluent is used in an amount of Add 0.1 times of the total weight of the modified zinc oxide powder filler and the modified organic fluori...

Embodiment 3

[0051] This embodiment relates to an antistatic thermal control coating composition and its preparation method, and the application of the antistatic thermal control coating composition in the preparation of a new antistatic white thermal control coating.

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

[0053] 1) Primer coating preparation: Add modified zinc oxide powder to phosphorus-containing modified organic fluorine resin, mix and stir, add xylene, mix, and ultrasonically stir evenly; by mass percentage: modify zinc oxide powder in the primer Accounting for 50wt% of the solid content of the paint, the modified organic fluororesin accounts for 50wt% of the total amount of the paint, the mass ratio of the modified organic fluororesin and the modified zinc oxide powder is 50:50, and the xylene diluent is modified according to its amount. Add 0.15 times of the total weight of zinc oxide powder filler and modified organic fluorine resin.

...