硫酸铝/NBR复合材料的制备及工艺  

Preparation and Process of Aluminum Sulfate/NBR Composite

作　　者：汪扬涛 王小君 陈婷 曾安蓉[1,2] 张青海 WANG Yangtao;WANG Xiaojun;CHEN Ting;ZENG Anrong;ZHANG Qinghai(School of New Materials and Shoes&Clothing Engineering,Liming Vocational University;Advanced Polymer Materials Fujian Application Technology Collaborative Innovation Center,Quanzhou 362000,China)

机构地区：[1]黎明职业大学新材料与鞋服工程学院 [2]先进高分子材料福建省应用技术协同创新中心,福建泉州362000

出　　处：《黎明职业大学学报》2025年第1期96-101,共6页Journal of LiMing Vocational University

基　　金：福建省中青年教师教育科研项目“新型交联甲基丙烯酸锌/EVA发泡鞋材的制备与研究”(JAT191458)。

摘　　要：以丁腈橡胶(NBR)为基体材料,通过机械共混直接添加Al_(2)(SO_(4))_(3)·18H_(2)O,在热压作用下发生配位交联反应制备硫酸铝/NBR复合材料;利用无转子硫化仪(MDR)、扫描电子显微镜(SEM)和万能试验机分析加工温度、Al_(2)(SO_(4))_(3)·18H_(2)O用量及粒径大小对复合材料的硫化特性、力学性能和微观形貌的影响。实验结果表明:加工温度升高可增大硫酸铝/NBR复合材料的交联程度;Al_(2)(SO_(4))_(3)·18H_(2)O用量增大和粒径减小均可提高交联程度和拉伸强度;当Al_(2)(SO_(4))_(3)·18H_(2)O用量为30质量份(PHR)时,材料的拉伸强度为2.77 MPa,断裂伸长率为401%;当Al_(2)(SO_(4))_(3)·18H_(2)O粒径为350目时,用量仅为10 PHR的材料的拉伸强度为2.88 MPa,断裂伸长率为798%。Nitrile rubber(NBR)was used as the matrix material,and aluminum sulfate octadecahydrate Al_(2)(SO_(4))_(3)·18H_(2)O was directly incorporated via mechanical blending in the preparation of aluminum sulfate/NBR through coordination crosslinking under thermal compression.The effects of processing temperature,dosage and particle size of Al_(2)(SO_(4))_(3)·18H 2O on sulfurization characteristics,mechanical properties and micromorphology of the composite material were systematically investigated using a Moving Die Rheometer(MDR),scanning electron microscopy(SEM),and universal testing machine.Results showed that elevated processing temperatures enhanced the crosslinking density of the aluminum sulfate/NBR composite material.Both the increased dosage of Al_(2)(SO_(4))_(3)·18H 2O and the reduced particle size improved crosslinking density and tensile strength.At 30 PHR filler loading,the composite exhibited a tensile strength of 2.77 MPa with an elongation at break is 401%.Notably,when utilizing 350-mesh Al_(2)(SO_(4))_(3)·18H 2O particles,the composite containing only 10 PHR filler achieved a tensile strength of 2.88 MPa and the elongation at break of 798%.

关 键 词：丁腈橡胶 硫酸铝 复合材料 配位交联 

分 类 号：TQ333.7[化学工程—橡胶工业]