BPR／PF复合材料的热性能和动态力学性能  

Dynamic Mechanical and Thermal Properties of BPR/PF Composites

作　　者：申欣[1] 韦春[1] 熊雪梅[1] 

机构地区：[1]桂林理工大学有色金属及材料加工新技术教育部重点实验室,材料科学与工程学院,广西桂林541004

出　　处：《现代塑料加工应用》2010年第4期18-21,共4页Modern Plastics Processing and Applications

基　　金：国家自然科学基金(50763001);广西自然科学基金(桂科自0728223);广西应用基础研究专项(桂科基0836016);广西研究生教育创新项目(2009105960305M13)资助

摘　　要：采用硼酚醛树脂(BPR)与普通酚醛树脂(PF)熔融共混挤出制备BPR/PF树脂,通过模压成型工艺制备BPR/PF复合材料。利用热失重(TG)、动态力学性能(DMA)研究不同BPR含量对复合材料热性能、动态力学性能、蠕变和应力松弛性能的影响。结果表明,BPR能显著增强树脂的热性能。700℃,BPR加入质量分数50份时,BPR/PF的残炭率达到了58%,而PF的残炭率只有38.29%,共混复合材料的储能模量提高了28%;玻璃化转变温度提高了18.3℃;复合材料的蠕变和应力松弛性能也得到了提高。Boron-containing phenol-formaldehyde/phenol formaldehyde （BPR/PF） resin was prepared by melt blending. BPR/PF composites were prepared through compression molding. The effects of contents of BPR resin on the thermal properties, the dynamic mechanical properties, creep and stress relaxation behavior of the composites were studied by TG and DMA. The results show that BPR can improve thermal properties of the BPR/PF resin. The weight loss of BPR/PF resin is over 58% at 700 ℃ when BPR is 50 phr, while the weight loss of PF is only 38. 29%. Campared with pure PF, the storage modulus of the com- posites increase by 28%. The glass transition temperature of the composites is increased by 18.3 ℃. The behaviors of the stress relaxation and creep of the composities are improved.

关 键 词：硼酚醛树脂 酚醛树脂 动态力学性能 热性能 

分 类 号：TB332[一般工业技术—材料科学与工程]