PC阻燃抗紫外线2807(PC抗UV)
PC具有良好的透光性,透光率接近90%。
PC是无定型聚合物,无准确熔点,但有熔程(熔融温度为220~240℃)。
PC的缺点是制品极易开裂,一般为应力开裂和溶剂开裂。
PC与不同聚合物形成合金或共混物,提高材料性能。具体有PC/ABS合金,PC/ASA合金、PC/PBT合金、PC/PET合金、PC/PET/弹性体共混物、PC/MBS共混物、PC/PTFE合金、PC/PA合金等,利有两种材料性能优点,并降低成本,如PC/ABS合金中,PC主要贡献高耐热性,较好的韧性和冲击强度,高强度、阻燃性,ABS则能改进可成型性,表质量,降低密度。
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PC main properties: PC polycarbonate is a transparent, yellowish orwhite rigid and tough polymer with a density of 1.2 g / CM3. Themolecular weight is generally 2 ~ 100,000, and the properties arerelated to the molecular weight. The impact resistance of PC is oneof the best Thermoplastic, 3 ~ 10 times higher than nylon andPolyformaldehyde, and close to phenolic and polyester frp. PC hasgood heat resistance and low temperature resistance, stablemechanical properties in a wide temperature range, dimensionalstability, electrical properties and flame retardancy, and can beused for a long time at-60 ~ 120 °C Water absorption rate is small,shrinkage rate is small, size accuracy is high, size stability isgood, film permeability is small; it is self-extinguishingmaterial; it is stable to light, but not resistant to ultravioletlight, weather resistance is good; it is resistant to oil, acid,strong alkali, oxidizing acid and amine, ketone, soluble inchlorinated hydrocarbons and aromatic solvents.