UHMWPE/HDPE/纳米SiO2共混熔纺纤维的制备及性能研究  

Study on Preparation and Properties of UHMWPE/HDPE/Nano-SiO Blended Melt-Spun Fibers

作　　者：杨家元 薛平[1] 王苏炜 曹尚刚 YANG Jia-yuan;XUE Ping;WANG Su-wei;CAO Shang-gang(Institute of Plastic Machinery and Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学,塑料机械及塑料工程研究所,北京100029

出　　处：《塑料工业》2020年第10期48-52,75,共6页China Plastics Industry

基　　金：国家自然科学基金(51673021)。

摘　　要：在采用熔融纺丝工艺制备单丝超高分子量聚乙烯(UHMWPE)/高密度聚乙烯(HDPE)/纳米SiO2共混纤维的基础上,设计带有分流锥的10孔UHMWPE喷丝板,并以高密度氧化聚乙烯蜡(OPE)为润滑剂,在不同长径比的情况下实现UHMWPE/HDPE/SiO2共混体系多头纤维的制备。此外,还利用差示扫描量热仪(DSC)和拉伸试验等方法探讨了OPE含量和喷丝板长径比对共混初生丝和共混纤维的结晶度和拉伸强度的影响。结果表明,随着长径比的增大,纤维拉伸强度呈先增大后减小的趋势,并在长径比为8∶1时取得最大值;少量添加OPE(质量分数为0.6%)能够提高纤维的拉伸强度,但继续添加OPE会导致纤维拉伸强度的下降。On the basis of monofilament ultra-high molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE)/nano-SiO2 blend fibers prepared by melt spinning,the 10-hole UHMWPE porous spinneret with split cone was designed,then the multi-end fiber of UHMWPE/HDPE/SiO2 blend was prepared with high density oxidized polyethylene wax(OPE)as lubricant under different length-diameter ratios.In addition,the effects of OPE contents and spinneret length-diameter ratios on the crystallinity and tensile strength of blended raw silks and blend fibers were discussed by differential scanning calorimeter(DSC)and tensile test.The results show that with the increase of ength-diameter ratio,the fiber tensile strength increases firstly and then decreases,and the maximum value is obtained at 8∶1.The tensile strength of the fibers can be improved when a small amount of OPE(mass fraction is 0.6%)is added,but the tensile strength of the fibers decreases with the increase of OPE contents.

关 键 词：超高分子量聚乙烯 多孔喷丝板 高密度氧化聚乙烯蜡 熔融纺丝 力学性能 结晶度 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]