In order to explore the blending conditions of PBT/PA6 blend,the blending temperature and screw speed were selected as the influencing variables.The HaakePolyOS twin-screw extruder was used for melt blending spinning under different variables,and the structural properties of the prepared fibers were characterized.The results shown that the blending temperature was from 250℃ to 270℃,the screw speed was from 10r/min to 25r/min,The best blending spinning conditions of PBT/PA6 (mass ratio 70/30) were that blending temperature 260℃,screw speed 15r/min.At this time,the enthalpy of fusion (ΔHm),enthalpy of crystallization (ΔHc),crystallinity (Xc) and thermal decomposition temperature (Ta,Tb) of the fiber were the highest.The blended fiber diameter was relatively thick of 244μm,The initial modulus and breaking strength of the fiber also reached the maximum value of this range,which were 1361.23MPa and 595.78MPa,respectively.
[1] Poulose A M,Piccarolo S,Carbone D,et al.Influence of plasticizers and cryogenic grinding on the high-cooling-rate solidification behavior of PBT/PET blends[J].Journal of Applied Polymer Science,2016,133(10):43083.
[2] Yin M,Yang Z,Shen J,et al.Flame-retarding and mechanical properties of polybutylene terephthalate(PBT)/flame retardant filled PBT multilayer composites[J].Polymer Materials Science & Engineering,2018,34(4):32-36.
[3] Liang N Y,Don T M,Huang C Y,et al.Effect of a low-molecular-weight compatibilizer on the immiscible blends of cellulose acetate propionate and poly(butylene terephthalate)[J].Journal of Polymer Research,2018,25(4):88.
[4] 司朋飞,王丽,罗发亮,等.双螺杆反应挤出制备MAH接枝TPEE材料工艺条件及其与PLA挤出共混性能的研究[J].塑料工业,2015,43(5):10-13,51.
[5] 石美浓,张有忱,谭晶,等.微纳叠层挤出成型方法对PP材料性能的影响[J].塑料,2017,46(2):34-36.
[6] 龚长华.聚丙烯/顺丁橡胶共混物结构与性能的研究[D].天津:天津大学,2006.
[7] 蒋涛,江学良,程时远.动态硫化EPDM/PP共混体系中PP相的结晶度及晶体结构的研究[J].功能高分子学报,1999,12(4):371-375.
[8] 刘永建,沈新元.热致液晶聚合物Ⅱ.结晶及熔融行为[J].合成纤维,2001(3):9-10,24.
[9] 左龙.膨胀型阻燃剂形态及形态分布调控对PBT性能影响研究[D].成都:西华大学,2017.
[10] 张作鑫,于祥,邓涛.共混温度对EPDM/FKM性能影响及共混胶老化过程中交联密度变化的研究[J].橡塑技术与装备,2017,43(15):1-6.
[11] 杨始堃,陈玉君,吴险峰.PA6/PET共混体系的X射线衍射分析[J].功能高分子学报,1999,12(2):59-61.
[12] 刘决康,罗绍继.PBT/PA6共混体相容性的研究[J].合成纤维工业,1991,14(1):15-21.
[13] 吴承然,瞿金平,贾仕奎,等.剪切和拉伸流场对动态硫化EPDM/PP的力学性能与结晶结构的影响[J].高分子材料科学与工程,2014,30(2):11-15.
[14] 刘佑习,童玉华,杨智伟,等.PBT/PET共混体系的熔融行为[J].功能高分子学报,1996,9(1):47-51.
