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Heat-resistant coating tensile shear strength test model and its manufacturing method

A technology for tensile shear strength and test models, which is applied in the field of test models for tensile shear strength of heat-resistant coatings, can solve problems such as unevenness, glue loss, and bonding thickness, and achieve simple production methods and improved stability and reliability The effect of sexiness and convenient operation

Active Publication Date: 2015-08-12
CASIC DEFENSE TECH RES & TEST CENT
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The invention provides a test model for tensile shear strength of heat-resistant coating, which solves the problem of uneven bonding thickness caused by the loss of glue in the curing process

Method used

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  • Heat-resistant coating tensile shear strength test model and its manufacturing method
  • Heat-resistant coating tensile shear strength test model and its manufacturing method

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Embodiment Construction

[0026] In order to further explain the technical means and effects of the present invention to achieve the intended purpose, the specific structure and effects of the present invention will be described in detail below in conjunction with the accompanying drawings, implementation methods, and structural features.

[0027] In the prior art, for heat-resistant coatings, the adhesion between the coating and the metal substrate is one of the performances that need to be investigated. At present, a large number of heat-resistant coatings for aerospace use organic resins as base materials, add fillers, and attach fiber cloth to reduce thermal conductivity and improve strength. The bonding performance test method between the heat-resistant coating and the metal substrate involved in the present invention is a tensile shear method.

[0028] The heat-resistant coating tensile shear strength test model of the present invention adopts a single lap joint form, and the specific structure i...

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Abstract

The invention discloses a heat-resistant coating tensile shear strength test model which comprises an upper sheet metal, a lower sheet metal, an intermediate adhesive layer, fiber cloth in the adhesive layer and paper adhesive tapes pasting around tensile shear adhesive surfaces of the sheet metals. A production method provided by the invention comprises adding the fiber cloth into the adhesive layer, thereby effectively controlling thickness and uniformity of the adhesive layer; and is added with a process of pasting paper adhesive tapes around the tensile shear adhesive surfaces, thereby reducing influences of irregular glue-spilling on test results, and improving stability of the test results.

Description

【Technical field】 [0001] The invention relates to a coating tensile shear model, in particular to a heat-resistant coating tensile shear strength test model and a manufacturing method thereof. 【Background technique】 [0002] Heat-resistant coatings are widely used for large-area heat protection on the outer surface of missile cabins and wing surfaces, as well as heat protection on brackets, fairings and other parts. Its manufacturing methods include spraying, brushing, low-temperature baking, etc. If it is a fiber prepreg, it is laminated and cured. The coating involved in the invention is the laminated and cured fiber prepreg heat-resistant coating. [0003] For heat-resistant coatings, whether the coating is well bonded to the substrate is directly related to whether the coating can exert its heat-resistant effect. Tensile shear strength test is a commonly used method to measure the room temperature interface bonding strength of coating / substrate materials. [0004] At ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/02G01N1/28
Inventor 辛燕李辰任毅黄小贝杨京
Owner CASIC DEFENSE TECH RES & TEST CENT
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