PE-HD/CF/HGB三元复合材料的制备及力学性能

Preparation and Mechanical Properties of High Density Polyethylene/Carbon Fiber/Hollow Glass Bead Ternary Composites

以高密度聚乙烯(PE-HD)为基体、碳纤维(CF)为增强材料,采用双辊塑炼工艺制备了PE-HD/CF复合材料,力学性能测试结果表明该复合材料的拉伸和弯曲性能随CF含量的增加而增大,但缺口冲击强度逐渐下降。在该复合材料基础上添加空心玻璃微珠(HGB)制得PE-HD/CF/HGB三元复合材料,力学性能测试结果表明当HGB用量为10份且CF用量为15份时,三元复合材料的拉伸强度、弯曲强度和缺口冲击强度均达到最大,分别为46.98 MPa,45.69 MPa和8.17 kJ/m2,较未加HGB的PE-HD/CF复合材料分别提高了7.19%,4.17%和10.4%。扫描电子显微镜结果表明,HGB主要通过其变形和破坏来吸收冲击能量,从而提高复合材料的韧性。

High density polyethylene （PE-HD） / carbon fiber （CF） composites were prepared by twin-roll plasticization with PE-HD as matrix and CF as reinforcement material. Mechanical properties test results indicate that with the content of CF increasing, tensile and bending properties of the composites increase but notched impact strength decreases. PE-HD / CF / HGB ternary composites were prepared through adding hollow glass bead （HGB） into PE-HD / CF composites. Mechanical properties test results indicate that when the content of HGB is 10 phr and the content of CF is 15 phr, tensile strength, bending strength and notched impact strength of the binary composite are highest, and their values are 46.98 MPa,45.69 MPa and 8.17 kJ/m2, improve by 7.19%, 4.17% and 10.4% respectively comparing with the composite without adding HGB. Scanning electron microscope observation results show that HGB can absorb imnact energy through it＇s break and deformation and then improve the toughness.