【作者】 王满力； 李超； 周元康； 王兆滨；

【Author】 WANG man-li, LI chao , ZHOU yuan-kang, WANG zhao-bin (College of Chemical Engineering, Guizhou University, Guizhou Guiyang 550003;College of Mechanical Engineering and Automation, Guizhou University, Guizhou Guiyang 550003)

【机构】 贵州大学化学工程学院； 贵州大学机械工程与自动化学院；

【摘要】 制备了桐油／硼酚醛(TBPF)和SiO2纳米／桐油／硼酚醛(NTBPF)两种复合改性树脂。采用热分析系统,对它们进行了DSC／TG曲线研究,结果表明它们的耐热性均显著优于普通的酚醛树脂,其中桐油／硼酚醛初始热分解温度为400℃,当热分解温度≥700℃时,残碳率≥50％;纳米SiO2/ 桐油／硼酚醛的初始热分解温度为450℃,当热分解温度≥700℃时,残碳率≥60％。用这两种树脂制作的摩擦制动带,后者的抗热衰退能力高于前者,在200℃以内抗磨损能力有明显提高达50％。更多还原

【Abstract】 Two phenolic resins tung oil / boron phenolics (TBPF) and nano-metre SiO2/ tung oil / boron phenolics (NTBPF) were synthesized . Differential thermal analysis method were used by analyzing the differential scanning calorimetry curves and thermal gravimetric curves (DSC/TG) of tung oil /boron PF and nano-SiCVtung oil /boron PF . Result showed that the initial decomposition temperature of tung oil /boron PF was above 400 ℃, remainder mass was above 50% at 700 ℃ . the initial decomposition temperature of nano-SiO2/tung oil /boron PF was above 450℃, remainder mass was above 60% at 700℃. Flication coefficient of non-asbestos woven brake band used with these phenolic resin hybrids ,the later is better than the former in the ability of resist thermal decline , and the recovery of them were well too.更多还原