含磷聚芳醚酮颗粒层间增韧碳纤维/双马树脂RTM复合材料  

Properties of Interlaminar Toughened CF/BMI Composites by Phosphorus-Containing PAEK Particles

作　　者：张兴迪 刘刚[2] 党国栋[1] 张金栋[2] 周宏伟[1] 陈春海[1] 包建文[2] 

机构地区：[1]吉林大学麦克德尔米德实验室化学学院,长春130012 [2]先进复合材料国防科技重点实验室北京航空材料研究院中航工业复合材料技术中心,北京100095

出　　处：《高分子学报》2016年第9期1254-1262,共9页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号51203144)资助项目

摘　　要：选用一种在RTM双马来酰亚胺树脂(BMI)注射温度下不溶解的含磷聚芳醚酮(P-PAEK)热塑性树脂作为增韧剂,制备层间颗粒增韧碳纤维增强双马来酰亚胺树脂基复合材料.研究了不同热塑树脂含量对树脂浇铸体冲击性能的影响,利用扫描电镜表征了复相体系的微观形貌并分析其增韧机制,并通过层间断裂韧性测试表征了RTM双马树脂基复合材料增韧前后的层间韧性性能.结果表明,当附载热塑颗粒面密度为2 g/m2时,复合材料的I型层间断裂韧性(GIC)为0.54 k J/m2,II型层间断裂韧性(G_(IIC))为1.36 k J/m^2,较未增韧复合材料分别提升约56%和42%.增韧后的复合材料在保持原有力学性能的同时,其冲击后压缩强度(CAI)提升约29%,层间剪切强度达到111.7 MPa.The phosphorus-containing poly（arylene ether ketone ） （P-PAEK） with the advantage of insolubility in BMI resin at the injection temperature was chosen as the toughener of RTM resin. The U3160 carbon fiber reinforced BMI resin composites interlaminar toughened by P-PAEK particles was fabricated via RTM process. Through research on the influence of P-PAEK particles with different contents on the impact strength properties of BMI resin,it was found that the toughness of matrix resin could be greatly improved by adding a few thermoplastic resin particles. The impact strength was increased from 10.3 kJ/m2 to 30.3 kJ/m2. The microscopic morphology was observed by SEM and toughening mechanism was analyzed. When the content of P-PAEK increased, the microstructure of TP/TS system experienced sea-island, co-continuous and phase inversion transition. The sea-island structure could absorb more energy than the other one, which attributed to the toughening mechanism of rigid particles. The interlaminar fracture properties of the composite were characterized by Mode I and Mode Ⅱ fracture toughness tests. It was found that the Gtc and Gtc of toughened U3160/BMI composites were well improved when the areal density of P-PAEK particles was 2 g/m2. It was improved 56% of Gic and 42% of GIIC compared to the U3160/BMI composites. The mechanical properties of composites were well kept,as the CAI increased by 29% and interlaminar shear strength was 111.7 MPa.

关 键 词：含磷聚芳醚酮 双马来酰亚胺树脂 增韧 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]