摘要
以再生高密度聚乙烯(HDPE)、沙柳木粉和废轮胎胶粉为原材料,含硫偶联剂Si69为界面相容剂,采用模压法制备木粉/橡胶-塑料三元复合材料。考察Si69对木粉/橡胶-塑料三元复合材料力学性能及耐热性能的影响,并采用FTIR和SEM分析Si69改性前后废轮胎胶粉的表面特性及木粉/橡胶-塑料三元复合材料的微观断面形貌。结果表明:Si69与废轮胎胶粉发生了化学反应。当Si69添加量为5wt%时,木粉/橡胶-塑料三元复合材料的界面结合较佳,力学性能及耐热性能较优,其中弯曲强度、弯曲模量、拉伸强度较未添加Si69的木粉/橡胶-塑料三元复合材料分别提高了13.85%、7.24%和6.63%;维卡软化温度和热变形温度较未添加Si69的木粉/橡胶-塑料三元复合材料分别提高了6.95℃和8.70℃,Si69可在一定程度上提高木粉/橡胶-塑料三元材料的耐热性能。Si69添加量为7wt%时,木粉/橡胶-塑料三元复合材料的缺口冲击强度可达到3.99kJ·m-2。
The regenerated high-density polyethylene(HDPE),salix wood powder and waste tire rubber powder were used as the raw materials,and sulfur-containing coupling agent Si69as the interface compatibilizer,wood powder/rubber-plastic ternary composites were prepared by molding method.The influences of Si69on the mechanical properties and heat resistance of wood powder/rubber-plastic ternary composites were investigated,the waste tire rubber powder surface characteristics before and after Si69modification and the microstructure of wood powder/rubber-plastic ternary composites were analyzed by FTIR and SEM.The results show that Si69has a chemical reaction with waste tire rubber powder.When the contents of Si69is 5wt%,the interfacial compatibility of wood powder/rubber-plastic ternary composites is better,mechanical properties and heat resistance are good,the flexural strength,flexural modulus and tensile strength are increased by 13.85%,7.24%,6.63%,respectively,which compared with no adding Si69;The vicat softening temperature and heat deformation temperature of wood powder/rubber-plastic composites are increased by 6.95℃and 8.70℃,respectively.Heat resistance of wood powder/rubber-plastic composites is improved by Si69to some extent.When the contents of Si69is 7wt%,the notched impact strength of wood powder/rubber-plastic ternary composites can reach 3.99kJ·m-2.
作者
王伟东
李奇
赵劲松
美丽
WANG Weidong;LI Qi;ZHAO Jinsong;MEI Li(College of Material Science and Art Design,Inner Mongolia Agricultural University,Huhhot010018,China;Inner Monglia ChengXing Construction Supervision of a Limited Liability Company,Huhhot010010,China;Inner Monglia Key Laboratory of Desert Shrub Fibrosis and Energy Procceeding,Huhhot010018,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2019年第9期2220-2226,共7页
Acta Materiae Compositae Sinica
基金
国家自然科学基金(31660177)
关键词
SI69
界面相容剂
复合材料
力学性能
耐热性能
Si69
interface compatibilizer
composites
mechanical properties
heat resistance
