Resin membrane melt impregnation forming method of fiber reinforced PBT composite material
A fiber-reinforced material and melt impregnation technology, which is applied in the field of composite materials, can solve the problems of high molding temperature and molding pressure, strict mold equipment requirements, and high production costs, and achieve low heat resistance requirements, reduce production costs, and facilitate operation Effect
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[0050] Example 1
[0051] Step 1), processing and forming a CBT resin film with a thickness of 15μm; the specific operation is: heating CBT160 to 150°C for heat preservation, and after the CBT resin is completely melted, immediately pour the CBT glue on the spread release cloth and a layer density 260 g / m 2 The glass cloth mold is scraped at 150°C to form a film, and then the mold is immediately cut off and cooled, and the temperature is lowered to 110°C and demolded.
[0052] Step 2) Place the first layer of release cloth and 20 layers on the mold coated with release agent in sequence. Step 1) The molded CBT resin film, the density of the second layer is 630g / m 2 The glass fiber unidirectional cloth and the second layer of release cloth; CBT resin film and glass fiber unidirectional cloth are sequentially laid and combined to form an impregnated layer. The size of CBT resin film and glass fiber unidirectional cloth is 350mm×450mm.
[0053] Step 3), heating the component obtained in ...
Example Embodiment
[0060] Example 2
[0061] Step 1), processing and forming a CBT resin film with a thickness of 300μm; the specific operation is: heating CBT160 to 170°C for heat preservation, after the CBT resin is completely melted, immediately pour the CBT glue on the spread release cloth and a layer density 260 g / m 2 The glass cloth mold is scraped at 150°C to form a film, and then the mold is immediately cut off and cooled, and the temperature is lowered to 110°C and demolded.
[0062] Step 2) Lay a mold release cloth, 8 layers of CBT resin film and 4 layers with a density of 630g / m on the mold coated with the release agent. 2 The glass fiber unidirectional cloth and release cloth, 2 layers of CBT resin film and 1 layer of glass fiber unidirectional cloth are laid in alternate interlayer form; that is, 2 layers of CBT resin film are laid on top of which 1 layer has a density of 630g / m 2 Glass fiber unidirectional cloth; spread the 3rd and 4th layer of CBT resin film on the upper surface of thi...
Example Embodiment
[0070] Example 3
[0071] Step 1), processing and forming a CBT resin film with a thickness of 380μm; the specific operation is: heating and melting CBT100 at 180°C, adding 0.1% mass fraction of chloromonobutyl stannic acid catalyst, fully stirring, and mixing uniformly. CBT resin mixed glue is poured on a mold release cloth and a layer with a density of 400g / m 2 On the forming mold of the glass fiber mat, at 180°C, it is scraped into a film, and then the forming mold is immediately cut off and cooled, and the temperature is lowered to 110°C and demolded to complete the processing of the CBT resin film.
[0072] Step 2) Spread the first layer of release cloth, 12 layers of CBT resin film and 4 layers of mold release agent with a density of 630g / m from bottom to top. 2 The glass fiber unidirectional cloth and the second layer of release cloth; among them, 3 layers of CBT resin film and 1 layer of glass fiber unidirectional cloth are laid in alternate interlayers to form an impregnat...
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