高熔融指数聚乙烯母粒的制备及其红外透射熔喷材料的可纺性  

Preparation of high melt flowing index polyethylene masterbatch and spinnability of infrared melt-blown nonwovens

作　　者：魏义慧 张宇静 邓辉话 邓庆辉 陈浩锵 张须臻[3] 于斌[1] 朱斐超 WEI Yihui;ZHANG Yujing;DENG Huihua;DENG Qinghui;CHEN Haoqiang;ZHANG Xuzhen;YU Bin;ZHU Feichao(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China;Guangdong Ganrong Technology Co.,Ltd.,Foshan,Guangdong 528010,China;College of Material Science and Engineering,Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China;Key Laboratory of Industrial Textile Materials and Manufacturing Technology of Zhejiang Province,Hangzhou,Zhejiang 310018,China;Shaoxing Eco Textile Technology Co.,Ltd.,Shaoxing,Zhejiang 311800,China)

机构地区：[1]浙江理工大学纺织科学与工程学院(国际丝绸学院),浙江杭州310018 [2]广东干荣科技有限公司,广东佛山528010 [3]浙江理工大学材料科学与工程学院,浙江杭州310018 [4]浙江省产业用纺织材料制备技术与研究重点实验室,浙江杭州310018 [5]绍兴宜可纺织科技有限公司,浙江绍兴311800

出　　处：《纺织学报》2024年第2期28-35,共8页Journal of Textile Research

基　　金：国家自然科学基金项目(52003306);浙江省自然科学基金项目(LQ21E030013);佛山科技创新项目(2018IT100363)。

摘　　要：针对现有的聚乙烯(PE)原料熔体流动性能差、熔融指数低、熔喷成纤困难等问题,以纺丝级线性低密度PE为原料,采用低分子质量聚乙烯蜡(PEW)增塑和催化断链降解协同法,制备了多系列熔喷用高熔融指数聚乙烯(HMI-PE)母粒,分别对其熔体的流变性能、分子质量及其分布、结晶性能、热稳定性进行了研究,并进一步制备了PE熔喷材料(PE-MBs),对PE-MBs的表观形貌、力学性能、红外透射性能进行了表征和分析。研究结果表明:随着PEW质量分数的增加,HMI-PE的分子质量下降、熔融指数不断增大,呈现典型的剪切变稀行为,但HMI-PE母粒热稳定性无明显影响。当PEW质量分数大于30%时,HMI-PE母粒的可达200 g/(10 min)以上(230℃),呈现良好的熔喷可纺性和力学性能。PE-MBs的红外透过率超过92%,具有优异的中红外透过性能。Objective The application of micro/nano ultrafine fiber aggregate materials with high transmittance and medium infrared performance in intelligent buildings,physical therapy and health energy is constantly expanding.Polyethylene(PE),as a typical high transmittance medium infrared material,has not yet received systematic research and applications in relation to its infrared transmittance ultrafine fiber materials.Melt-blown method can be used to prepare PE ultrafine fiber aggregates with high quality and efficiency.However,not much research has been witnessed on PE raw materials for melt-blown performance and melt-blown formation,and there is no PE melt-blown material with satisfactory performance in the market.This study prepared PE master batches with high melt index(HMI-PE)for melt spraying,further prepared PE melt spraying materials(PE-MBs),and studied their infrared transmittance.Method Using spinning grade PE as raw material,high melt index PE master batches(HMI-PE)were prepared by reactive extrusion using a synergistic method of plasticizer(plasticizer,polyethylene wax(PEW))and catalyst(initiator,DCP)chain breaking.The rheological properties,molecular weight and distribution,crystallization performance,and thermal stability of the HMI-PE master batches were investigated.Furthermore,PE melt-blown materials(PE-MBs)were prepared using SJ-25 micro melt blown testing mechanism,and the apparent morphology and mechanical of PE-MBs were studied.The infrared transmittance performance was characterized and analyzed.Results Under the same temperature conditions,as the mass fraction of PEW increased,the melt index(MI)of HMI-PE master batches continuously increased.At different temperatures,the magnitude of the increase in MI of HMI-PE master batches increased with the increase of temperature.Under constant temperature conditions,the complex viscosity showed a decreasing trend with an increase in shear rate,resulting in a decrease in molecular weight and a wider distribution of molecular weight.The glass melting tempera

关 键 词：聚乙烯 熔喷材料 非织造 流变性能 红外透过率 可纺性 

分 类 号：TS176[轻工技术与工程—纺织材料与纺织品设计]