Epoxy resin composition, prepreg, carbon fiber reinforced composite material, and housing for electronic or electrical component
A technology for reinforcing composite materials and epoxy resins, applied in the field of epoxy resin compositions, can solve the problems of inability to obtain good processability and mechanical properties, slow curing speed, poor productivity, etc., and achieve excellent fast curing properties and excellent flame retardancy sexual effect
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Embodiment 1
[0181] As shown in Table 1, "Epicron (registered trademark)" N-770 and "jER (registered trademark)" 154 were used as component [A], and Dicy7 and "Omicure (registered trademark)" 24 were used as component [B]. Use PX-200 as component [C], use SPB-100 as component [D], use YP-50 as thermoplastic resin, make the content of the compound represented by formula (I) in component [A] = 87%, and the content of phosphorus When prepared at 1.2%, the gelation time of the epoxy resin composition was 87 seconds, and it could be cured within 3 minutes, and the Tg of the cured resin was 160° C., showing a good result. The modulus of elasticity of the cured resin was 3.8 GPa, the amount of deflection was 3.3 mm, and the balance of properties was good. In addition, the flame retardancy of the composite material is V-1 when the thickness is 0.6-0.7mm, and is V-0 when the thickness is 0.19-0.21mm, and sufficient flame retardancy is obtained. The Tg of the composite material after curing for 3 m...
Embodiment 2
[0183] Use "Omicure (registered trademark)" 52 instead of "Omicure (registered trademark)" 24 in component [B], increase the SPB-100 in component [D] from 5 parts to 10 parts, and change the phosphorus content to 1.7% A cured resin, a prepreg, and a composite material were prepared in the same manner as in Example 1 except that YP-70 was used instead of YP-50 as the thermoplastic resin. The flame retardancy of the composite material was evaluated, and as a result, both thicknesses of 0.6-0.7mm and 0.19-0.21mm reached V-0. Cured resin properties, composite material properties, and molded product properties are also good.
Embodiment 3、4
[0185] Increase the total compounding amount of component [C] and component [D] to 30 parts by weight, use YP-70 as the thermoplastic resin in the same way as in Example 2, and make a resin cured product in the same way as in Example 1, and prepare Dip blanks, composite materials. The characteristics were evaluated, and the results showed that the flame retardancy of the composite material reached V-0 when the thickness was 0.6-0.7mm and 0.19-0.21mm. In Example 3 in which 20 parts by weight of phosphoric acid ester was blended, the Tg of the composite material was slightly low, but it was at a level without problems, and other characteristics were good.
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