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Novel airplane binding face self-adhesion sealing material and method

A sealing material and bonding surface technology, which is applied in the direction of polymer adhesive additives, film/sheet adhesives, non-polymer adhesive additives, etc. Equal problems to achieve the effect of ensuring sealing quality, improving construction efficiency and controlling thickness

Inactive Publication Date: 2019-01-18
BAIMTEC MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When coating, due to the viscosity and thixotropy of the sealant, it is difficult to control the thickness of the sealant layer, especially for the construction of large-area bonding surfaces, it is more likely to have uneven thickness of the sealant layer, or the sealant is partially vulcanized, resulting in excessive assembly. Poor, and other problems occur, which will affect the overall assembly quality of the aircraft
At the same time, due to the complex structure of the aircraft and the different sizes of the bonding surfaces, there are also different requirements for the vulcanization rate of the sealant. For the sealing of some larger size bonding surfaces, it is necessary to use a sealant with a slower vulcanization rate. It meets the requirements of on-site construction, but the later period of vulcanization will also be prolonged, especially in the case of low temperature and humidity, it takes several weeks or even more than ten weeks to achieve a certain degree of vulcanization of the sealant, which seriously affects the process behind the aircraft schedule

Method used

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  • Novel airplane binding face self-adhesion sealing material and method
  • Novel airplane binding face self-adhesion sealing material and method
  • Novel airplane binding face self-adhesion sealing material and method

Examples

Experimental program
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preparation example Construction

[0037] The preparation method of sealing film is characterized in that the method comprises the following steps:

[0038] (1) Prepare materials according to the following components and weight percentages:

[0039] Component A: liquid polysulfide rubber 75%-90%, reinforcing filler 5%-20%, tackifier 3%-6%, vulcanization inhibitor 0.2%-0.5%;

[0040] Component B: 35% to 40% of manganese dioxide, 50% to 60% of plasticizer, 1% to 4% of vulcanization accelerator, and 2% to 6% of vulcanization inhibitor;

[0041] (2) Stir the components in component A and component B under vacuum conditions respectively, or respectively mix the components in component A and component B by three-roll grinding to form a paste;

[0042] (3) Take the uniformly mixed components A and B in step (2), the weight ratio is 100:8~10, the recommended weight ratio is 100:10, and after rough mixing by hand, stir under vacuum conditions , or use a three-roller grinding method to mix evenly, and use a mold to pre...

Embodiment 1

[0048] 1. Formula composition

[0049]

[0050]

[0051] 2. Preparation of two-component room temperature vulcanizing sealant

[0052] Component A: Weigh liquid polysulfide rubber, silicon dioxide, titanium dioxide, E44 epoxy resin, F44 phenolic resin, KH570 silane coupling agent and stearic acid according to the ratio, add them to the double planetary stirring equipment, and put them in a vacuum of - Under the condition of 0.09MPa, stir and mix, the mixing speed is 20rpm, and the mixing time is 60min. In the middle, according to the mixing situation, the stirring blade of the stirring equipment can be cleaned, and then continue to stir. After the mixing is completed, put it into a sealed tank for storage.

[0053] Component B: respectively weigh manganese dioxide, butyl benzyl phthalate, accelerator DPG and stearic acid according to the proportion, add them to the double planetary stirring equipment, and stir and mix them under the condition of vacuum degree -0.09MPa. Th...

Embodiment 2

[0061] 1. Formula composition

[0062]

[0063] 2. Preparation of two-component room temperature vulcanizing sealant

[0064] Component A: Weigh liquid polysulfide rubber, kaolin, calcium carbonate, K18 phenolic resin, E54 epoxy resin, KH550 silane coupling agent and stearic acid according to the ratio, roughly mix them, and grind them with a three-roll mill for 5 Once finished, store in an airtight jar.

[0065] Component B: Weigh manganese dioxide, dibutyl phthalate, accelerator TMTD and stearic acid according to the ratio, roughly mix them, grind them 5 times with a three-roller mill, and put them in a sealed tank save in .

[0066] 3. Preparation of sealing film

[0067] Take 600g of component A and 60g of component B respectively, mix them 5 times on a three-roller mill, put them between two pieces of polyethylene film with the same size, and then put them into a steel sheet with a cavity size of 600mm×600mm×1mm. In the mold, press it on the hydraulic molding machi...

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Abstract

The invention belongs to the technical field of sealing materials and technologies and relates to a novel and portable airplane binding face self-adhesion sealing material and method. The self-adhesion sealing material is prepared from a component A and a component B, wherein the weight ratio of the component A to the component B is 100 to (8 to 10); the component A and the component B are prepared from the following components in percentage by weight: the component A: 75 to 90 percent of sulfydryl-terminated liquid polysulfide rubber, 5 to 20 percent of reinforcing filler, 3 to 6 percent of atackifier and 0.2 to 0.5 percent of a vulcanization inhibitor; the component B: 35 to 40 percent of manganese dioxide, 50 to 60 percent of a plasticizer, 1 to 4 percent of a vulcanization acceleratorand 2 to 12 percent of the vulcanization inhibitor. The self-adhesion sealing material can be used for effectively controlling the thickness of a binding face sealing agent layer and the sealing quality is ensured. A construction process is not influenced by factors including a construction environment, construction time, a subsequent sealing agent vulcanization speed and the like and is convenient to construct; materials are taken while being used and a sealing agent does not need to be prepared on site; after a sealant sheet is paved, normal assembling and subsequent procedures can be carried out.

Description

technical field [0001] The invention belongs to the technical field of sealing materials and techniques, and relates to a novel and convenient self-adhesive sealing material and a method for an aircraft bonding surface. Background technique [0002] In the traditional sealing process of aircraft mating surfaces, polysulfide sealant is generally used for coating, and the sealant is vulcanized in situ to achieve sealing. When coating, due to the viscosity and thixotropy of the sealant, it is difficult to control the thickness of the sealant layer, especially for the construction of large-area bonding surfaces, it is more likely to have uneven thickness of the sealant layer, or the sealant is partially vulcanized, resulting in excessive assembly. Poor, and other problems occur, which in turn affects the overall assembly quality of the aircraft. At the same time, due to the complex structure of the aircraft and the different sizes of the bonding surfaces, there are also differe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J181/04C09J11/08C09J11/04C09J11/06C09J7/10C09J7/30
CPCC08L2205/03C09J11/04C09J11/06C09J11/08C09J181/04C09J2481/00C09J7/10C09J7/30C08L63/00C08L61/06C08K13/02C08K3/36C08K5/09C08K5/12
Inventor 宋英红吴松华于美超刘峥
Owner BAIMTEC MATERIAL CO LTD