High-weather-resistance black PC resin composition as well as preparation method and application thereof

Abstract

The invention provides a high-weather-resistance black PC resin composition as well as a preparation method and application thereof. The black PC resin composition with high weather resistance comprises the following components: polycarbonate resin, hyperbranched polycarbonate, black powder, a hydrolysis-resistant agent, an antioxidant and a light stabilizer, the branching degree of the hyperbranched polycarbonate is 0.3 to 0.5, and the weight-average molecular weight of the hyperbranched polycarbonate is 6400 to 12000. According to the high-weather-resistance black PC resin composition disclosed by the invention, hyperbranched polycarbonate is introduced and is matched with other auxiliaries, so that the water resistance of the black PC resin composition can be effectively improved. The weather resistance and the highlight black surface state can be further improved, and the alloy material can be applied to preparation of spraying-free plastic products and can replace common spraying PC/ABS alloy materials on parts such as automobile household appliances and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, and more particularly, to a high-weather-resistant black PC resin composition and a preparation method and application thereof. Background technique [0002] Polycarbonate (PC) is an amorphous thermoplastic resin with excellent comprehensive properties. It has excellent electrical insulation, elongation, transparency, dimensional stability, high impact strength and chemical resistance, and high resistance. Heat and cold resistance, etc. However, because the molecular chain of PC contains -COO (ester group), in the presence of an acid or a base, the ester can undergo a hydrolysis reaction to generate the corresponding acid or alcohol. Therefore, conventional polycarbonates have low hydrolysis resistance stability, are sensitive to notch, and have poor scratch resistance. Long-term exposure to ultraviolet light has obvious yellowing effect, which limits the application of polycarbonate i...

AI Technical Summary

Problems solved by technology

Therefore, conventional polycarbonate has low hydrolysis stability, is sensitive to notches, has poor scratch resistance, and has obvious yellowing effect after long-term exposure to ultraviolet rays, which limits the application of polycarbonate in some fields.

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