长玻纤/高密度聚乙烯复合材料的制备  

Preparation of Long Glass/High Density Polyethylene Composites

作　　者：屈超[1] 黄政 刘俊红[1] QU Chao;HUANG Zheng;LIU Junhong(Sichuan Vocational College of Chemical Technology,Luzhou 646300,China)

机构地区：[1]四川化工职业技术学院,四川泸州646300

出　　处：《化工技术与开发》2024年第6期27-30,34,共5页Technology & Development of Chemical Industry

摘　　要：以N406作为偶联剂,向双螺杆挤出机中连续加入玻璃纤维(玻纤GF),再经剪切、混合工艺,共混制备了长玻纤增强高密度聚乙烯(HDPE)复合材料。采用万能拉伸测试仪、冲击强度测试仪和熔体流动速率(MFR)测试仪,测试了复合材料的力学性能和流动性能;采用差式扫描量热仪(DSC)表征了复合材料的结晶温度、熔融温度;用热失重分析仪(TG)测量了复合材料的玻纤含量。研究结果表明,N406的用量对HDPE的拉伸强度的影响不大,但对冲击强度和MFR的影响较明显。偶联剂用量为8%时,相较未用偶联剂的长玻纤,增强HDPE复合材料的冲击强度提高了64.34%,MFR降低了40.07%。随着玻纤含量增加,拉伸强度、冲击强度升高,MFR降低;HDPE的结晶温度降低,熔融温度增加。玻纤含量为31.26%的复合材料,拉伸强度达到62.88MPa,较纯HDPE提高了180.97%。Long glass fiber reinforced high density polyethylene(HDPE) blends were prepared by twin screw extruder with N406 as coupling agent.The mechanical and flow properties of the blends(MFR) were tested.The crystallization and melting temperatures of blends were measured by differential scanning calorimeter(DSC).The content of glass fiber was measured by thermo gravimetric analyzer(TG).The results showed that the amount of N406 had little effect on the tensile strength,but had greater effect on the MFR and impact strength.When the coupling agent content was 8%,the impact strength of composites increased by 64.34%,the MFR decreased by 40.07% compared with those without coupling agent.With the increase of glass fiber content,tensile strength and impact strength of composites increased,but MFR decreased.At same time,the crystallization temperature of HDPE decreased and melting temperature increased.The tensile strength of composites with 31.26% glass fiber content reached 62.88MPa,which increased 180.97% compared with pure HDPE.

关 键 词：长玻璃纤维 高密度聚乙烯 偶联剂 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]