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以十二羟基硬脂酸(12-HSA)、环氧大豆油(ESO)为原料合成十二羟基硬脂酸酯接枝环氧大豆油(PHS-gESO)分散剂。将PHS-g-ESO、聚丙烯(PP)、剑麻微晶(MCF)和轻质碳酸钙(Ca CO3)混合均匀后,使用双螺杆挤出机和立式注射机制备PP/PHS-g-ESO/MCF复合材料。采用红外光谱(FTIR)、凝胶渗透色谱(GPC)、摆锤式冲击试验、万能试验机和场发射扫描电镜(SEM)等进行表征和测试。由SEM分析得到,PHS-g-ESO改善了MCF与PP基体的界面相容性。MFR测试表明了PP/PHS-g-ESO/MCF复合材料加工流动性能得以改善。当PHS-g-ESO的添加量为4%时,PP/PHS-g-ESO/MCF复合材料的拉伸强度和冲击强度分别比未添加时提高了24.4%和89%。
Dodecyl stearate grafted epoxy soybean oil (PHS-gESO) dispersant was synthesized from 12-hydroxystearic acid (12-HSA) and epoxy soybean oil (ESO). After mixing PHS-g-ESO, polypropylene (PP), sisal microcrystal (MCF) and calcium carbonate (CaCO3) uniformly, PP / PHS-g was prepared using a twin screw extruder and a vertical injection machine -ESO / MCF composite. FTIR, gel permeation chromatography (GPC), pendulum impact test, universal testing machine and field emission scanning electron microscopy (SEM) were used to characterize and test. From SEM analysis, PHS-g-ESO improved the interfacial compatibility between MCF and PP matrix. The MFR test showed that the flowability of PP / PHS-g-ESO / MCF composites was improved. The tensile strength and impact strength of PP / PHS-g-ESO / MCF composites increased by 24.4% and 89% respectively when the amount of PHS-g-ESO was 4%.