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A kind of surface treatment agent and its preparation method and application

A technology of surface treatment agent and crosslinking agent, which is applied in the field of surface treatment agent and its preparation, can solve the problems that it is difficult to apply the surface treatment requirements of silicone rubber heat insulation layer, and the duration of physical treatment effect is short, so as to achieve the enhancement of surface chemical activity and the operation Simple, long-lasting effect

Active Publication Date: 2021-06-11
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The duration of the physical treatment effect is short, and the treatment equipment is difficult to meet the surface treatment requirements of the silicone rubber insulation layer inside the engine casing of different sizes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The composition of the surface treatment agent is as follows:

[0035] Hydroxyl silicone oil, hydroxyl value 6.0%, 100 parts; tetraethylorthosilicate, 20 parts; γ-aminopropyltriethoxysilane, 20 parts; tetrabutyl titanate, 10 parts; ferric oxide, 1.0 parts ; White carbon black 20 parts; Xylene, 200 parts.

[0036] The preparation method of the above-mentioned surface treatment agent, the steps of the method are: mixing hydroxy silicone oil, crosslinking agent, tackifier, titanate coupling agent, heat-resistant additive, white carbon black and diluent, and stirring uniformly to obtain surface treatment agent.

[0037] The application of a surface treatment agent in the bonding of the silicone rubber heat insulating layer and the butyl hydroxy lining layer, the steps are:

[0038] (1) Sandblasting or grinding the surface of the silicone rubber insulation layer;

[0039] (2) brushing the prepared surface treatment agent on the surface of the silicone rubber heat insulati...

Embodiment 2

[0043] The composition of the surface treatment agent is as follows:

[0044] Hydroxy silicone oil, hydroxyl value 4.0%, 100 parts; orthomethyl silicate, 10 parts; γ-(2,3-epoxypropoxy)propyltrimethoxysilane, 10 parts; γ-aminopropyltriethoxy silane, 20 parts; tetrabutyl titanate, 30 parts; cerium oxide, 0.5 parts; ferric oxide 1.5 parts; toluene, 50 parts.

[0045] The preparation method of the above surface treatment agent comprises the following steps: mixing hydroxyl silicone oil, crosslinking agent, tackifier, titanate coupling agent, heat-resistant additive and diluent, and stirring evenly to obtain the surface treatment agent.

[0046] Surface treatment of the silicone rubber insulation layer and lining coating: After the silicone rubber insulation layer is sandblasted or polished, cleaned, and pre-baked, the surface treatment agent is brushed and left to air at 20°C for 1 hour. Brush or scrape butadiene polyurethane liner slurry on the surface of the heat insulation lay...

Embodiment 3

[0049]The composition of the surface treatment agent is as follows: hydroxy silicone oil, hydroxyl value 8.8%, 100 parts; tetraethyl orthosilicate, 10 parts; methyl triethoxysilane, 20 parts; γ-aminopropyl triethoxysilane, 60 parts Parts; tetraethyl titanate, 5 parts; tetraethyl titanate, 5 parts; tin dioxide, 0.5 parts; ferric oxide, 0.5 parts; white carbon black, 40 parts; toluene, 300 parts.

[0050] The preparation method of the above-mentioned surface treatment agent, the steps of the method are: mixing hydroxy silicone oil, crosslinking agent, tackifier, titanate coupling agent, heat-resistant additive, white carbon black and diluent, and stirring uniformly to obtain surface treatment agent.

[0051] Surface treatment of the silicone rubber insulation layer and lining coating: After the silicone rubber insulation layer is sandblasted or polished, cleaned, and pre-baked, the surface treatment agent is brushed and left to air for 1 hour at 25°C. Brush or scrape butadiene ...

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Abstract

The invention relates to a surface treatment agent and its preparation method and application, in particular to a surface treatment agent and its preparation method and its application in the bonding of the silicone rubber heat insulating layer and the butyl hydroxy lining layer, belonging to the solid rocket motor heat insulating layer bonding In the field of jointing technology, it is especially related to the technology of enhancing the interface bonding between the silicone rubber heat insulating layer and the butylated hydroxyl lining layer. Compared with traditional silicone rubber surface treatment methods, such as corona and plasma treatment techniques, the viscosity increasing technique adopted in the present invention does not require specific equipment, is easy to operate, and the treated interface has a longer application time.

Description

technical field [0001] The invention relates to a surface treatment agent and its preparation method and application, in particular to a surface treatment agent and its preparation method and its application in the bonding of the silicone rubber heat insulating layer and the butyl hydroxy lining layer, belonging to the solid rocket motor heat insulating layer bonding In the field of jointing technology, it is especially related to the technology of enhancing the interface bonding between the silicone rubber heat insulating layer and the butylated hydroxyl lining layer. Background technique [0002] The solid rocket motor combustion chamber is composed of shell, heat insulation layer, liner and propellant. Among them, the thermal insulation layer plays the role of thermal protection for the shell during the propellant combustion process; the lining layer plays the role of bonding the thermal insulation layer and the propellant to maintain the structural integrity. The debond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/04C09J11/06C09J11/04C09J5/02
Inventor 黄海龙李东峰尹华丽李彦荣王江桑丽鹏王玉李悦李洋
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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