A method of film thickness control

Abstract

A method for controlling the thickness of an adhesive film, comprising using an adhesive film thickness control device, comprising the following steps: first selecting a suitable thickness difference die plate; on the surface of the film thickness control device and the connected upper connecting plate and lower connecting plate in order to lay polytetrafluoroethylene cloth, isolation film and air felt, wrap them as a whole and put them into a vacuum bag, and then together with Put the vacuum bag together into the autoclave, then complete the bonding and curing of the upper connecting plate and the lower connecting plate in the autoclave, and take out the glued parts to make the connection between the upper connecting plate and the lower connecting plate The thickness of the adhesive film is the target thickness of the adhesive film. The invention can better control the thickness of the glue film in the bonding process of the composite materials, thereby effectively controlling the bonding strength of the connecting joints of the composite materials, and effectively solving the problem of uneven bonding of the composite materials that is easy to occur in the bonding process of the composite materials. question.

Description

technical field [0001] The invention belongs to the technical field of composite material forming, and particularly relates to a method for controlling the thickness of an adhesive film. Background technique [0002] With the use of new materials such as aluminum alloys and composite materials, it is no longer suitable for material connection by welding. The existing composite material connection methods include mechanical connection, cemented connection and hybrid connection. Mechanical connections can cause stress concentration to a certain extent, so adhesive bonding is more widely used in the connection of composite materials than mechanical connections. As one of the main parameters of cemented connection, the thickness of the adhesive film directly affects the strength of the connection joint. In addition, studies have shown that the uniformity of the adhesive film thickness also affects the shear strength of the composite joint. In order to obtain the same strength o...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of method of adhesive film thickness control, to solve the problem in the background technology that there is no better method for the control of adhesive film thickness of composite material overlapping at present in China. The problem that the uniformity cannot be better guaranteed

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