Sizing agent composition, carbon fiber material and composite material
A carbon fiber material and carbon fiber substrate technology, applied in the direction of carbon fiber, fiber type, fiber treatment, etc., can solve the problems of carbon fiber adhesion, difficult storage of sizing agent, easy moisture absorption and adhesion of carbon fiber materials, etc., so as to avoid carbon fiber adhesion and inhibit time hardening Defects, the effect of improving the combination
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Synthetic example
[0064] In a nitrogen atmosphere, 40 g of polyoxyxylene (PPO) was dissolved in toluene at 90° C., and 4 g of dicyclopentadiene phenol novolac (Dicyclopentadiene Phenol Novolac; DCPDNO) was added. Then, 4 grams of benzoyl peroxide (BPO) was slowly dropped in to carry out the reaction. After reacting for 3 hours, the temperature was cooled to room temperature, and purified with methanol to obtain a pale yellow precipitate. Next, using Na 2 CO 3 Excess BPO was removed, and water was removed under vacuum at 110°C to obtain the dicyclopentadiene compound represented by the following formula (III). Among them, R 1 with R 2 represents a hydrogen atom, and R 3Represents the functional group shown in the aforementioned formula (I-3), wherein m represents the number of BPO molecular repeating units, and m represents 1 to 5.
[0065]
[0066] Preparation of sizing agent and carbon fiber material
Embodiment 1
[0068] With the epoxy compound (A-1) of 30 weight parts, the dicyclopentadiene compound (B-1) of 2 weight parts, the surfactant (C-1) of 4.8 weight parts and the surfactant (C-1) of 1.6 weight parts C-4) Heat above melting point and mix with IKA mixer. After mixing evenly, cool down to the boiling point temperature of the surfactant (C-1). Then, adjust the rotational speed to 5000rpm to 10000rpm, and slowly drop 61.6 parts by weight of water within 2 hours to prepare the sizing agent of Example 1.
[0069] Further, according to the foregoing description, and the prior art and equipment of the sizing process, the carbon fiber substrate (containing 12,000 single-bundle fibers. The strength of a single-bundle fiber is about 4900MPa, and its modulus is 250GPa) is impregnated with The sizing agent is dipped in the tank, and the carbon fiber substrate whose surface has been impregnated with the sizing agent is conveyed by the godet roller. Next, a drying step is performed at a tem...
Embodiment 2 to Embodiment 20
[0074] Example 2 to Example 20 use the same preparation method as the sizing agent and carbon fiber material in Example 1, the difference is that the type and usage amount of raw materials in the sizing agent are changed in Example 2 to Example 20, and its formula and evaluation results They are shown in Table 1, and will not be repeated here. Wherein, the sizing ratio of the carbon fiber materials in Example 2 to Example 20 is controlled at 0.8% by weight to 1.2% by weight.
[0075] Table 1
[0076]
[0077] A1 commercially available product with model number NPEL 128
[0078] A2 commercially available product with model number NPEL 170
[0079] A-3 Commercially available products whose model number is NPPN 640
[0080] A-4 Commercially available products with model number HP-5000
[0081] B-1 commercially available product with model number ERM-6140
[0082] B-2 Commercially available products whose model is XD-100
[0083] B3 A commercially available product with t...
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