Insulation-coated carbon fiber, method for producing insulation-coated carbon fiber, carbon fiber-containing composition, and thermally conductive sheet
A manufacturing method and technology of carbon fiber, applied in the direction of carbon fiber, insulator, fiber processing, etc., can solve the problems of short circuit, high electrical conductivity, electronic component failure, etc., and achieve high thermal conductivity, excellent insulation, thermal conductivity and excellent insulation. Effect
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Embodiment 1
[0108] Samples 1~7, 15 and 16: Fabrication of coated carbon fibers coated with divinylbenzene polymer
[0109] The coated carbon fibers of Sample 1 were produced in the following procedure.
[0110] Into a glass container, 210 g of pitch-based carbon fibers (trade name XN-100-10M: manufactured by Nippon Graphite Fiber Co., Ltd.) with an average fiber diameter of 9 μm and an average fiber length of 100 μm, and 1000 g of ethanol were charged, and mixed with a stirring blade to obtain a slurry liquid. Nitrogen was added to the slurry liquid at a flow rate of 160 mL / min for inertization, and 52.5 g of divinylbenzene was added to the slurry.
[0111] Ten minutes after the addition of divinylbenzene, 1.05 g of a polymerization opening reaction initiator (oil-soluble azo polymerization initiator) previously dissolved in 50 g of ethanol was put into the slurry liquid. After charging, stirring was carried out for 5 minutes, and inertization by nitrogen was stopped.
[0112] Thereafte...
Embodiment 2
[0131] (Example 2, Comparative Example 2)
[0132] 4 g of the coated carbon fiber of each sample was mixed with 2.7 g and 3.3 g of two-component addition-reaction liquid silicone resins (parts by mass shown in Table 1), respectively, and a planetary mixer (あわとり内太郎, ( Co., Ltd. THINKY Co., Ltd.) to obtain compositions of samples 1 to 16.
[0133] Thereafter, on the peeled 125 μm PET film, the composition of each sample was coated with a coater, and at the same time, the composition of each sample was sandwiched by the PET film so that the thickness was 1 mm, and then, as shown in Table 1 The mixture was cured by heating at 100° C. for 6 hours, and the composition of each sample was formed into a sheet.
[0134] (evaluate)
[0135] The following evaluations were performed on each of the obtained samples. The evaluation results are shown in Table 1.
[0136] (1) Recovery rate
[0137] The recovery rate was calculated by dividing the mass of each sample of the coated carbon f...
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