Thermal expansion technology for high-energy rubber-molded fiber composite product

Abstract

The invention discloses a thermal expansion technology for a high-energy rubber-molded fiber composite product. The thermal expansion technology particularly comprises the steps that fiber composite cloths and high-energy rubber are cut according to the structural design specification size and then cleared up for use; the fiber composite cloths are folded in a rowed mode and layered up according to the mechanical structural design requirements, and a rolled product is obtained by arranging the fiber composite cloths outside the high-energy rubber in a wrapping mode; the obtained rolled product is put on a heating platform with the temperature ranging from room temperature to 80 DEG C to be preheated for 3-60 min, gas among layers is exhausted in an extruding mode as much as possible, the product is pressed to be smooth and then put into a pre-molding mold, pre-molding is conducted according to the shape designed by the pre-molding mold, and a pre-molded product is obtained; the obtained pre-molded product is put into a preheating oven with the temperature ranging from 35 DEG C to 75 DEG C to be preheated for 3-60 min and then taken out to be put into a molding mold, and the mold is closed tightly; the mold is delivered to a thermal compression molding platform, the high-energy rubber is expanded and not shrunk or is expanded first and then shrunk under the action of the heating procedure, and product molding is completed; the molded mold is delivered to a cooling platform to be cooled and then delivered to a demolding platform, and the product is taken out by opening the mold. The technology method replaces a traditional nylon duct method.

Description

technical field [0001] The invention relates to a fiber product forming process, in particular to a thermal expansion process for forming a fiber composite product with high-energy glue. Background technique [0002] At present, most fiber composite products are mostly formed by the internal pressurization method of blowing nylon air pipe. With this blowing internal pressurization molding method, the pre-work of the nylon pipe before use is complicated; and because the nylon pipe is under high temperature Under high pressure, it is easy to break, which will cause air leakage of the product. Once air leakage occurs, the air leaking product will be scrapped, resulting in an increase in the rate of defective products, and the defective rate is as high as 3-5%. In addition, the nylon tube is limited by its shape. Nylon tubes cannot be used well for some products with irregular appearance; at the same time, this kind of blowing and internal pressurization molding method also requ...

AI Technical Summary

Problems solved by technology

[0002] At present, most fiber composite products are mostly formed by the internal pressurization method of blowing nylon air pipe. With this blowing internal pressurization molding method, the pre-work of the nylon pipe before use is complicated; and because the nylon pipe is under high temperature Under high pressure, it is easy to break, which will cause air leakage of the product. Once air leakage occurs, the air leaking product will be scrapped, resulting in an increase in the rate of defective products, and the defective rate is as high as 3-5%. In addition, the nylon tube is limited by its shape. Nylon tubes cannot be used well for some products with irregular appearance; at the same time, this kind of blowing and internal pressurization molding method also requires an air compressor to supply air, resulting in high noise and high energy consumption

Take rackets and bicycles as an example: before using the nylon tube, soak the release agent first, and let it dry to form a film, which takes 2-3 days; nylon tubes are prone to air leakage under high temperature and high pressure, and different products have different defect rates. For bicycles, for example, it is 3-5%, which has become a difficult problem in the industry; after the molded product, the nylon tube must be soaked in water to soften it, and it will be pulled out from the product, which usually takes 1-2 days. Affect the product quality; some special-shaped nylon tubes cannot solve the appearance problem, which is a common problem in the industry and brings great troubles to production

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