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Aircraft integral fuel tank surface protection sealing coating

An integral fuel tank and sealing coating technology, applied in anti-corrosion coatings, epoxy resin coatings, anti-fouling/underwater coatings, etc., can solve the problems of affecting the sealing effect, the molecular structure of the sealant being easily eroded by microorganisms, and the growth of molds. , to achieve the effect of improving heat resistance, improving extensive adhesion, and good anti-mildew and anti-corrosion properties

Active Publication Date: 2019-12-17
BAIMTEC MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polysulfide sealants currently mainly include polysulfide sealants, modified polysulfide sealants and polythioether sealants. Such sealants are prone to mold growth under hot and humid conditions, and due to the growth and spread of mold, the sealant The internal molecular structure is easily eroded by microorganisms, resulting in degradation and deterioration, which seriously affects the sealing effect

Method used

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  • Aircraft integral fuel tank surface protection sealing coating
  • Aircraft integral fuel tank surface protection sealing coating
  • Aircraft integral fuel tank surface protection sealing coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] According to the ratio of parts by mass, add 16 parts of hydrogenated carboxylated nitrile rubber, 2.5 parts of fumed silica, 2 parts of epoxy-terminated liquid polysulfide rubber, 4 parts of novolac epoxy resin, and 0.3 parts of iron oxide red to the double rollers in sequence Mix with an open mill, crush evenly after mixing, then add the crushed rubber into the stirring tank, add 74.2 parts of mixed solvent, 0.3 parts of A-Link 599 silane coupling agent, bis-(3- (triethoxysilane) propyl)-disulfide silane coupling agent 0.7 parts, stirred at a stirring speed of 60 rpm for 4 hours until the glue was uniform and then discharged.

Embodiment 2

[0041] According to the ratio of parts by mass, add 10 parts of hydrogenated carboxylated nitrile rubber, 4 parts of fumed silica, 4 parts of epoxy-terminated liquid polysulfide rubber, 1 part of novolac epoxy resin, and 0.5 parts of neodymium oxide into the double-roller opener in sequence. Mixing in the mill, crushing after uniform mixing, and then adding the crushed rubber into the stirring tank, then adding 80.4 parts of mixed solvent, 0.1 part of A-Link 599 silane coupling agent, at 60 rpm Stir at a stirring speed for 4 hours until the glue is uniform and ready to be discharged.

Embodiment 3

[0043] According to the ratio of parts by mass, 10 parts of hydrogenated carboxylated nitrile rubber, 4 parts of fumed silica, 5 parts of epoxy-terminated liquid polysulfide rubber, 1 part of novolac epoxy resin, and 0.5 part of erbium oxide are added to the double-roller opening in sequence. Mixing in the mixer, crushing after uniform mixing, then adding the crushed rubber material into the stirring tank, adding 79 parts of mixed solvent, 0.5 part of A-Link 599 silane coupling agent, at 60 rpm Stir at a stirring speed for 5 hours until the glue is uniform and ready to be discharged.

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Abstract

The invention belongs to the technical field of sealing coatings, and relates to an aircraft integral fuel tank surface protection sealing coating. The main components of the coating comprise hydrogenated carboxyl nitrile rubber, fumed silica, phenolic aldehyde epoxy resin, a tackifier, a pigment, a coupling agent and a mixed solvent. The aircraft integral fuel tank surface protection sealing coating provided by the invention has wide adhesion to a polysulfide sealant and a fuel tank base material and has excellent oil resistance and temperature resistance, so that the sealing safety of an aircraft integral fuel tank in severe environments such as damp and hot environments and salt mist environments is protected, and the effects of mold prevention and corrosion prevention are achieved.

Description

technical field [0001] The invention belongs to the technical field of sealing coating preparation, and relates to a sealing coating for protecting the surface of an aircraft integral fuel tank. Background technique [0002] Integral fuel tanks are widely used by various types of aircraft because they can make full use of the space and provide a larger fuel capacity. Anodized aluminum alloy, titanium alloy, galvanized carbon steel, etc. are the main metal materials that constitute the overall fuel tank parts of the aircraft. For the anti-corrosion of such materials, the anti-corrosion primer is usually used to directly cover the metal parts of the fuel tank before forming. Apply protective sealant paint on the surface of the fuel tank after assembly. [0003] Polysulfide sealant is the main non-metallic material of the overall fuel tank of the aircraft. It is mainly used as the sealing material for the bonding surface of the fuel tank, fillet and screws. It is an important ...

Claims

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Application Information

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IPC IPC(8): C09D115/00C09D163/04C09D181/04C09D5/14C09D5/08C09D7/20C09D7/61C09D7/63C09D7/65
CPCC09D115/00C09D5/14C09D5/08C09D7/20C09D7/61C09D7/70C09D7/63C09D7/65C08L2201/08C08L2205/03C08K2003/2272C08K2003/221C08L63/04C08L81/04C08K13/04C08K7/26C08K5/548C08K5/372C08K3/22C08K3/042
Inventor 鲍传磊孙超刘刚秦蓬波吴松华
Owner BAIMTEC MATERIAL CO LTD