Karl Fischer在纺粘非织造织物领域里的研究活动可以追溯到这一工艺的刚刚兴起时。通过这种工艺,连续的合成纤维长丝非织造织物可以通过喷丝板直接制成。最早的纺粘法生产装置(当时同Carl Freudenberg合作)于1966年开始生产尼龙-6纺粘...Karl Fischer在纺粘非织造织物领域里的研究活动可以追溯到这一工艺的刚刚兴起时。通过这种工艺,连续的合成纤维长丝非织造织物可以通过喷丝板直接制成。最早的纺粘法生产装置(当时同Carl Freudenberg合作)于1966年开始生产尼龙-6纺粘型非织造织物,后来采用热粘合工艺生产出聚酯和聚丙烯热粘合织物。展开更多
A acrylonitrile-maleic anhydride copolymer was pre-pared by precipitation polymerization with（NH<sub>4</sub>）<sub>2</sub>S<sub>2</sub>O<sub>8</sub>-NaHSO<sub>3&l...A acrylonitrile-maleic anhydride copolymer was pre-pared by precipitation polymerization with（NH<sub>4</sub>）<sub>2</sub>S<sub>2</sub>O<sub>8</sub>-NaHSO<sub>3</sub> as oxidation-reduction initiator in water.The effects of polymerization conditions（such as contentof adjustment reagent of molecular weight,concentrationof monomers,reaction time and temperature,ratio ofinitiator to monomer and ratio of reductant to oxidizer inmole）on composition,molecular weight and conversionof the copolymer were investigated.The copolymer wascharacterized with IR and Elementary Analysis.Its ther-mal property and crystallinity were determined with DTAand WAXD,respectively.展开更多
文摘A acrylonitrile-maleic anhydride copolymer was pre-pared by precipitation polymerization with（NH<sub>4</sub>）<sub>2</sub>S<sub>2</sub>O<sub>8</sub>-NaHSO<sub>3</sub> as oxidation-reduction initiator in water.The effects of polymerization conditions（such as contentof adjustment reagent of molecular weight,concentrationof monomers,reaction time and temperature,ratio ofinitiator to monomer and ratio of reductant to oxidizer inmole）on composition,molecular weight and conversionof the copolymer were investigated.The copolymer wascharacterized with IR and Elementary Analysis.Its ther-mal property and crystallinity were determined with DTAand WAXD,respectively.
