低密度聚乙烯/热塑性弹性体的电缆阻燃材料的制备及其性能研究  

Preparation and Property Study of Low Density Polyethylene/Thermoplastic Elastomer Flame Retardant Materials for Cables

作　　者：孔德忠[1] KONG De-zhong(Wuxi Vocational Institute of Arts&Technology,Yixing 214206,China)

机构地区：[1]无锡工艺职业技术学院,江苏宜兴214206

出　　处：《塑料科技》2024年第1期59-62,共4页Plastics Science and Technology

基　　金：江苏省第六期“333高层次人才培养工程”资助(2022)3-16-828;江苏省高等学校自然科学研究项目资助项目(19KJD430006)。

摘　　要：为提升电缆材料的阻燃性能,实验制备了低密度聚乙烯/热塑性弹性体基体(LDPE/TPE),并添加改性氢氧化铝(ATH)、微胶囊化红磷(MRP)、氧化铝(Al_(2)O_(3))和有机改性二氧化硅(SiO_(2))等阻燃材料进行复配填充,在电子束辐射交联下改善复合材料的性能。结果表明:随着TPE组分的增加,共混物的熔体流动速率(MFR)先上升后降低。当TPE的添加量为28%时,共混物的MFR最大,为5.93 g/10 min。少量添加TPE可提升LDPE/TPE共混物的加工性能。阻燃材料复配填充时,ATH、MRP、Al_(2)O_(3)和有机改性SiO_(2)的添加量分别为50份、30份、30份和10份,复合材料的综合性能表现最优。随着辐射剂量的增加,复合材料凝胶含量先上升后趋于稳定。To enhance the flame retardancy of cable materials,a low density polyethylene/thermoplastic elastomer matrix(LDPE/TPE) was prepared,and flame-retardant materials such as modified aluminum hydroxide(ATH),microencapsulated red phosphorus(MRP),alumina(Al_2O_3),and organically modified silica(SiO_2) were added to improve the properties of the composites under electron beam radiation crosslinking.The results show that with the increase of TPE component,the melt flow rate(MFR) of the blend initially increases and then decreases.When the TPE content is 28%,the MFR of the blend reaches its maximum at 5.93 g/10 min.A small additive amount of TPE can enhance the processing properties of the LDPE/TPE blend.When flame retardant materials are compounded and filled,with the addition of 50 parts ATH,30 parts MRP,30 parts Al_2O_3,and 10 parts organically modified SiO_2,the comprehensive property of the composite is optimal.As the radiation dose increase,the gel content of the composite initially increases and then stabilizes.

关 键 词：低密度聚乙烯 热塑性弹性体 辐射交联 

分 类 号：TB331[一般工业技术—材料科学与工程]