摘要
目的研究聚丙烯原料对无纺布的力学和加工性能的影响规律,从而制备出力学性能高、纺丝性能好的无纺布。方法以不同熔融指数的聚丙烯粉料为基础树脂,使用不同的过氧化物与其进行共混熔融挤出造粒,然后采用气相色谱、高温凝胶渗透色谱、拉伸等测试手段对样品的基础物性、分子结构、气味、VOC、残留物和无纺布的力学性能及加工稳定性等方面进行表征与分析。结果以熔融指数8 g/10 min(GB/T3682.1-2018)的粉料为基础树脂,加入少量的3,6,9-三甲基-1,4,7-三过氧壬烷,挤出造粒制备出的4号树脂原料样品。该样品具有高的熔体流动性(MFR为35~40 g/10 min)、窄的分子量分布(3~5)、低灰分和鱼眼数、低气味、低残留的过氧化物等性能,从而制成拉伸强度高、纺丝效率高且加工稳定的无纺布成品。结论基础聚丙烯树脂的分子量设计、原料的配方体系、工艺路线都对无纺布制品的力学性能和可纺性产生重要影响。
The work aims to study the effect of polypropylene raw materials on the mechanical and processing prop-erties of non-woven fabrics,so as to prepare non-woven fabrics with high mechanical properties and good spinning prop-erties.Polypropylene powder with different melt indexes was used as the base resin and mixed with different peroxides for melt extrusion granulation.The basic physical properties,molecular structure,odor,VOC,residue and mechanical properties and processing stability of the samples were characterized and analyzed by gas chromatography,high temper-ature gel permeation chromatography,tensile test,etc.No.4 resin raw material sample prepared by extrusion granulation with a small amount of 3,6,9-trimethyl-1,4,7-triperoxynonane in the powder with a melt index of 8 g/10 min(GB/T 3682.1-2018)had high melt fluidity(MFR of 35-40 g/10 min),narrow molecular weight distribution(3-5),low ash con-tent and fish eye count,low odor,and low residual peroxides,resulting in non-woven fabric products with high tensile strength,high spinning efficiency and stable processing.The molecular weight design of basic polypropylene resin,the formulation system of raw materials,and the process route all have a significant effect on the mechanical properties and spinnability of non-woven fabric products.
作者
汪家宝
崔寅鑫
王耀华
易思善
陈强
马晶芬
程江
汪诗平
WANG Jia-bao;CUI Yin-xin;WANG Yao-hua;YI Si-shan;CHEN Qiang;MA Jing-fen;CHENG Jiang;WANG Shi-ping(E-juxitang(Nanjing)Supply Chain Co.,Ltd.,Nanjing 210000,China;Oriental Energy(Ningbo)New Materials Co.,Ltd.,Zhejiang Ningbo 315800,China)
出处
《包装工程》
CAS
北大核心
2023年第15期39-44,共6页
Packaging Engineering
关键词
聚丙烯
无纺布
可控流变
过氧化物
纺丝
polypropylene
non-woven fabric
controllable rheology
peroxide
spinning
