摘要
应用共混填充制备了ＰＰ／硅灰石／ＥＰＤＭ三元复合物。通过设计界面、控制组分和优化共混工艺得到以ＥＰＤＭ为壳、硅灰石为核的复合分散相。本复合材料具有均衡的力学性能，超高韧性和较好的刚度。文中研究了复合物组分和形态结构对其模量Ｅｃ３、屈服强度σｙｃ３、断裂强度σｂｃ３等力学性能的影响。用理论模型对其进行了分析拟合，与实验数据很好符合。结果表明，复合分散相壳层厚度对Ｅｃ３变化起到决定性的影响，复合体系表观界面粘结性能对σｙｃ３、σｂｃ３变化起到决定性的影响。
The PP/Wollastonite/EPDM composites with different volume fractions of rubber and filler were prepared by melt extrusion in a twinscrew extruder. The Wollastonite was pretreated by Silane couping agent. The effect of the morphology and structure of the ternary composites on the modulus (Ec3), yielding stress (σyc3) and stress at break (σbc3) in tensile test were investigated. The experimental data of Ec3, σyc3 and σbc3 were fitted and analyzed by theoretical equations. In comparison the experimental results with the theoretical prediction, the shellcore structure dispersed phase was formed, which increased the apparent volume fraction of rubber and decreased the interfacial adhesion as increasing filler volume fraction. The formation of the shellcore structure dispersed phase affected the mechanical property of the composites.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1998年第1期115-118,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金
香港Research Groat Council资助
关键词
聚丙烯
硅灰石
三元乙丙橡胶
力学性能
共混
PP/Wollastonite/EPDM ternary composite
shellcore dispersed phase
mechanical properties
