Carbon fiber asphalt preparation method and carbon fiber asphalt
A technology of carbon fiber and pitch, which is applied in the field of pitch for carbon fiber, can solve the problems of easily leaving mesophase components and low yield, and achieve the effects of suppressing insoluble components, high yield, and high fiber applicability
Active Publication Date: 2016-05-11
GS CALTEX CORP (KR)
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Problems solved by technology
However, isotropic pitch with a narrow range of molecular weight distribution can be prepared from raw materials with a wide molecular weight distribution by this method, but there are disadvantages in the homogeneity and spinnability of the prepared pitch, that is, , not only the yield is low, but also easy to leave mesophase components when heated
Method used
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Embodiment 1～ Embodiment 10
[0066] The reactor is filled with pyrolysis fuel oil (PFO) and dicumyl peroxide (DCP, dicumylperoxide) or hydrogen peroxide (hydrogenperoxide) to mix, and then filled with ozone (O 3 ) The gas is simultaneously heat-treated, thereby proceeding the radical polymerization reaction.
[0067] After the radical polymerization reaction was completed, nitrogen gas at a flow rate of 2 L / min was passed through for a predetermined period of time to remove unreacted or low-reacted molecules, thereby obtaining pitches prepared according to Examples 1 to 10.
[0068] The reaction conditions of each example are shown in Table 1.
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The invention relates to a carbon fiber asphalt preparation method and carbon fiber asphalt. The preparation method is characterized in that a peroxide compound and ozone are loaded into residual oil in a petroleum process, and a heat treatment is performed so as to carry out a reaction. According to the present invention, with the preparation method, the carbon fiber asphalt with characteristics of high yield at a lower temperature, high softening point, high strength, excellent oxidation stability, excellent oxidation infusibility, and low quinoline insoluble substance content can be provided.
Description
Technical field [0001] The present invention relates to a pitch for carbon fiber, and more specifically to a method for preparing pitch for carbon fiber with a high softening point through free radical crosslinking (Crosslinking) and a pitch for carbon fiber prepared according to the preparation method. Background technique [0002] Carbon fibers are classified into polyacrylonitrile, cellulose, pitch, and phenolic resins according to the raw material. Among them, pitch-based carbon fibers are roughly divided into mesophase according to the type of the pitch used as the precursor (precursor) Pitch-based carbon fibers and isotropic (Isotropic) pitch-based carbon fibers. [0003] The aforementioned mesophase pitch-based carbon fiber is prepared using an optically anisotropic mesophase pitch as a precursor, and the isotropic pitch-based carbon fiber is prepared using an optically isotropically isotropic pitch as a precursor. Regarding the mechanical properties of carbon fibers, if me...
Claims
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Login to View More IPC IPC(8): C10C3/02D01F9/155
Inventor 朴相昱吴永世崔智受金基雄朴商希
Owner GS CALTEX CORP (KR)