界面结合对GF/PDCPD复合材料性能的影响

Influence of interfacial bonding on the properties of glass fiber reinforced PDCPD composite

摘要:

界面结合性能对制备性能优异的复合材料具有重要意义。通过对双环戊二烯（DCPD）与玻璃纤维（GF）的浸润性进行研究，将其与等效环氧树脂比较，开发了一种与玻璃纤维具有较好结合性的DCPD树脂，用其制备出一种综合性能优异的玻璃纤维增强PDCPD基复合材料。通过动态接触角、90?拉伸强度和层间剪切强度实验，测定了不同树脂与玻璃纤维之间的粘附力，提供了玻璃纤维与不同树脂界面性能差异。结果表明，SCB-600 DCPD树脂与玻璃纤维的结合性较优，动态接触角为60.35??0.3?，90?拉伸强度为(42.3?1.6) MPa，层间剪切强度为(61.3?3.2) MPa，与1564环氧树脂相当。进一步优化了DCPD树脂质量分数，当树脂质量分数为30%?2%时，SCB-600 DCPD复合材料具有相对最优的力学性能，材料拉伸强度为(1180.1?4.1) MPa，弯曲强度为(1060.4?4.6) MPa，缺口冲击强度为(145.3?4.8) KJ/m2。其弯曲和拉伸强度与玻璃纤维增强环氧树脂基复合材料的性能基本相当，但缺口冲击强度优于1564环氧树脂。

Abstract:

The interfacial bonding performance is of great significance to the preparation of composite materials with excellent performance. To study the combination of dicyclopentadiene (DCPD) and glass fiber (GF), we com-pared DCPD with equivalent epoxy resin and developed a kind of DCPD resin with favorable combination perfor-mance with glass fiber. Glass fiber reinforced PDCPD-based composite material with excellent comprehensive performance were prepared based on this. Through dynamic contact angle, 90? tensile strength and interlaminar shear strength experiments, the adhesion and the interface performance difference between different resins and glass fiber were measured. The results showed that SCB-600 DCPD resin has favorable bondability with glass fiber. The dynamic contact angle is 60.35??0.3?, the 90? tensile strength is (42.3?1.6) MPa, and the interlaminar shear strength is (61.3?3.2) MPa, which is equivalent to 1564 epoxy resin. The DCPD resin mass fraction was further optimized. When the resin mass fraction is (30%?2%), the glass fiber reinforced SCB-600 DCPD showed relatively optimal mechanic properties: the tensile strength of (1180.1?4.1) MPa, the bending strength of (1060.4?4.6) MPa, and the notched impact strength of (145.3?4.8) KJ/m2. Its flexural strength and tensile strength are basically equivalent to those of glass fiber reinforced epoxy resin-based composites, but notched impact strength is better than that of 1564 epoxy resin.