改性尼龙66初生纤维的制备及性能研究  

Preparation and properties of modified nylon 66 as-spun fiber

作　　者：冯刚[1] 蔡芳昌[1,2] 喻亚格[3] 易忠业 叶正涛[1,2] 

机构地区：[1]湖北大学材料科学与工程学院,武汉430062 [2]功能材料绿色制备与应用省部共建教育部重点实验室,武汉430062 [3]武汉纺织大学化学化工学院,武汉430073

出　　处：《化工新型材料》2014年第3期52-54,共3页New Chemical Materials

基　　金：湖北省教育厅科学研究计划重点项目(D20120107);功能材料绿色制备与教育部重点实验室开放基金(430-046028);湖北省高等学校青年教师深入企业行动计划项目(XD20100572)

摘　　要：采用PP-g-MAH与PA66进行共混改性,通过双螺杆挤出机制备改性尼龙66粒料,熔融纺丝后制备初生纤维。研究PP-g-MAH含量对共混物料流动性能,初生纤维热性能和拉伸性能的影响。研究结果表明,随着PP-g-MAH含量的增加,PA66/PP-g-MAH共混物样品的熔体流动速率逐渐减小,流动性变差;初生纤维的结晶度(Wc),熔点(Tm)和断裂强度先增大后减小。当PP-g-MAH含量为10%(质量分数,下同)时,结晶度,熔点和断裂强度达均达到最大值。其中结晶度为37.8%,熔点为263.87℃,断裂强度为4.31CN/dtex。The modified nylon 66 was prepared by blending nylon 66 with PP-g-MAH by twin-screw extruder. Then the modified nylon 66 as-spun fiber was prepared by melt spinning. The impact of the amount of PP-g-MAH on flowing properties, thermal properties and tenacity properties of as-spun fiber were investigated. The analysis indicated that the melt flow rate of modified nylon 66 decreased continuous, the degree of crystallinity（Wo）, melting point（Tin）and breaking tenaci- ty of samples increased firstly and then decreased with the increase of PP-g-MAH contents. When the amount of PP-g- MAH contents was 10wt%,the We, Tm and breaking strength of samples reached maximum value, such as 37. 8%, 263. 79℃ and 4. 31CN/dtex.

关 键 词：共混改性 尼龙66 熔融纺丝 PP-G-MAH 初生纤维 

分 类 号：TQ342.12[化学工程—化纤工业]