阻燃防水多功能PET纤维的制备

分别采用环境友好型的磷氮系列新型阻燃剂和聚偏氟乙烯(PVDF)对聚酯(PET)进行改性,通过皮芯复合纺丝制备阻燃防水多功能PET纤维,对纤维的制备工艺及其阻燃性能和防水性能进行了研究。结果表明:添加环氧树脂包覆磷酸铵(CK-APP105)质量分数为6%时,纤维极限氧指数值高达30.7%,具有良好的阻燃效果;CK-APP105/三聚氰胺脲酸盐(CK-MCA)质量比为7/3时,协同阻燃效果最佳;芯层料添加质量分数5.6%的CK-APP105和2.4%的CK-MCA,皮层料添加质量分数6%的PVDF,所制得纤维的断裂强度为3.25 cN/dtex,断裂伸长率为67.32%,极限氧指数为30.9%,与水的接触角大于90°;改性PET纤维具有较好的阻燃性能和防水性能。

Preparation of flame-retardant and waterproof multifunctional PET fibers

Polyethylene terephthalate(PET) was modified with new environmental friendly phosphorus-and nitrogen-based flame retardants and polyvinylidene fluoride(PVDF),from which a flame-retardant and waterproof multifunctional fiber was prepared by sheath-core composite spinning process.The flame retardance and waterproof property of the fiber and the production process as well were studied.The results showed that the fiber had the limit oxygen index up to 30.7% and fairly good flame retardancy as the addition of epoxy resin-coated ammonium polyphosphate(CK-APP105) was 6% by mass fraction;the optimal synergistic flame retardant effect can be achieved when the mas ratio of CK-APP105 and melamine cyanurate(CK-MCA) was 7/3;the obtained fiber had the breaking strength of 3.25 cN/dtex,elongation at break 67.32%,limit oxygen index 30.9% and the contact angle with water above 90° when the core was added with 5.6% CK-APP105 and 2.4% CK-MCA and the sheath was added with 6% PVDF by mass fraction.The modified PET fiber had fairly good flame-retardant and waterproof properties.