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High flame retardant low warpage carbon fiber sheet and its preparation process
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A carbon fiber sheet, low warpage technology, applied in the field of composite materials, can solve the problems of material performance degradation, large amount of addition, difficult processing, etc., and achieve the effects of offsetting inconsistent shrinkage, reducing weight, and avoiding warping
Active Publication Date: 2018-12-14
JIANGSU AOSHENG COMPOSITE MATERIALS HI TECH
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Halogen-free flame retardant is mainly to add hydroxide, phosphorus-nitrogen compounds or introduce phosphorus-nitrogen groups. The efficiency of these compounds is low, and the addition amount is large, which will cause the performance of the material to decline and make processing difficult
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Embodiment 1
[0036] Toho M40-12 carbon fiber filaments and epoxy resin WP-2200 are made into a unidirectional carbon fiber prepreg with a filament weight of 150g and a resin content of 35%.
[0037] Laminate six layers of 150g, 35% resin content unidirectional carbon fiber prepreg, and a layer of polycarbonate horn mesh (with plasma surface treatment) for lamination. The lamination is as follows:
[0039] Add a layer of PET release film and two layers of kraft paper on both sides of the laminated product, put it into the template, put it into the carrier plate, pressurize it in the flat hot press, heat and cure it, the specific steps are: flat plate The hot press is preheated to 80°C first, and the material is sent into the flat hot press, the mold is closed, vacuumized, heated to 170°C, kept at this temperature for 10 minutes, then cooled to 80°C, restored to normal pressure, and taken out Place the t...
Embodiment 2
[0041] Toho M40-12 carbon fiber filaments and epoxy resin WP-2200 are made into a UD unidirectional prepreg with a filament weight of 100g and a resin content of 35%.
[0042] Toho T300B-3K carbon fiber yarn is woven into 3K plain weave cloth with a weaving machine, the weight is 200g, and then it is made into a silk weight of 200g with epoxy resin WP-2200 (adding 20% glass floating beads), and the resin 30% 3K cloth prepreg.
[0043] Laminate two layers of 200g 3K cloth prepreg with a resin content of 30%, six layers of 100g unidirectional carbon fiber prepreg with a resin content of 35%, and one layer of polycarbonate horn mesh (with plasma surface treatment). Layers are:
[0045]Add a layer of PET release film and 2 layers of kraft paper on both sides of the laminated product, put it into the template, put it into the carrier plate, pressurize it in a flat hot press, heat an...
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Abstract
The invention relates to a high-inflaming-retarding low-warping carbon fiber sheet. The sheet is manufactured through laminating and pressing of a plurality of layers of carbon fiber prepreg and at least one layer of plastic horn mesh. A manufacturing process of the high-fire-resistance low-warping carbon fiber sheet comprises the steps of conducting primary impregnation to form the carbon fiber prepreg, stacking the carbon fiber prepreg in a vertically symmetrical mode with the plastic horn mesh as the center layer, and conducting pressurizing and heating curing after laminating. The high-performance plastic horn mesh is adopted and subjected to surface treatment to serve as the sandwich layer of the carbon fiber sheet for electronic products, and by adding the material, weight is further reduced, the functions of reinforcing ribs are realized, inconsistent shrinkage rate caused by anisotropism of a carbon fiber composite material is counteracted, and warping is avoided; the manufactured ultrathin carbon fiber sheet has an inflaming retarding property and is low in deformation degree, low in weight, suitable for bulk production and especially suitable for light-weight application of electronic products.
Description
technical field [0001] The invention relates to the field of composite materials, in particular to a high flame-retardant and low-warpage carbon fiber sheet used in the electronics industry and a preparation process thereof. Background technique [0002] With the development of electronic lightweighting, traditional aluminum-magnesium alloy materials cannot meet the requirements. For example, notebook computers have dropped from traditional products to less than 1 kg, and Ipads have to develop from 900 grams to 700 grams or even 500 grams. are becoming stronger and stronger, so there is an urgent need for new materials to solve them. Carbon fiber composite materials have the advantages of light weight, high strength, low thermal expansion coefficient, and corrosion resistance. They can solve the problem of lightweight and miniaturized equipment, especially the diversified development of carbon fiber products, which has attracted widespread attention. There have also been at...
Claims
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Application Information
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