摘要
将分散剂、纳米碳酸钙和聚丙烯(PP)切片按一定比例混合纺丝制得改性PP纤维。并研究了改性PP纤维的结构与性能。结果表明:当分散剂与纳米碳酸钙的质量比为1∶3,纳米碳酸钙质量分数为0．3%时,改性PP纤维的断裂强度和初始模量最大,分别为7．97,90．36 cN/dtex．纳米碳酸钙在改性PP纤维中分散均匀,且粒径为40～80 nm。与PP纤维相比,改性PP纤维的取向度变化不大,结晶度有所提高,但当纳米碳酸钙质量分数大于等于2%时,其结晶度下降明显。
The modified PP fiber was prepared by blending a dispersant, nano-calcium carbonate and polypropylene （PP） chips at a specific ratio. The structure and properties of modified PP fiber were studied. The resuhs showed that the breaking strength and initial modulus were maximized as 7.79 and 90.36 cN/dtex respectively when the mass ratio of the dispersant to nano-calcium carbonate was 1 ： 3 and the content of nano-calcium carbonate was 0. 3% by mass fraction. The nano-calcium carbonate with particle size of 40 - 80 μm had a uniform dispersion in the modified PP fiber. As compared with PP fiber, the orientation degree of the modified PP fiber almost remained unchanged and the crystallinity was increased in some degree but decreased when the content of nano-calcium carbonate was not less than 2%.
出处
《合成纤维工业》
CAS
CSCD
北大核心
2007年第2期23-25,共3页
China Synthetic Fiber Industry
关键词
聚丙烯纤维
碳酸钙
纳米
分散剂
力学性能
结构
polypropylene fiber
calcium carbonate
nanometer
dispersant
mechanical properties
structure
