摘要
本文采用高温热处理法制备ＰＡＮ基高模量炭纤维（ＰＡＮＨＭＣＦ）。着重研究了最高热处理温度和升温速率对ＰＡＮ基炭纤维（ＰＡＮＣＦ）宏观性能和微观结构的影响。实验结果表明：采用密闭式真空感应石墨化炉能够制备ＰＡＮＨＭＣＦ（抗拉模量＞４００ＧＰａ，抗拉强度≥２．５０ＧＰａ）；随着最高热处理温度的升高，ＰＡＮＣＦ的抗拉模量显著提高；欲制备ＰＡＮＨＭＣＦ（抗拉模量＞４００ＧＰａ），可以采用高温热处理法，最高热处理温度要在３０００℃左右；ＰＡＮＣＦ的抗拉强度随最高热处理温度的升高而降低；在一定范围内，加快升温速率可以改善ＰＡＮＨＭＣＦ的抗拉强度。本文还对ＰＡＮＣＦ的抗拉模量、抗拉强度和电阻率等性能变化的原因进行了讨论。
The PAN-based high mpdulus carbon fiber (PAN HMCF)has been produced by hightemperature heat treament. Effects of the maximum treatment temperature and the vate oftemperature rise on macroscopic property and microstructure of PAN -based carbon fiber(PAN CF)Were researched in particular The results showed that the PAN HMCF(tensionmodulus>400GPa tensile strength≥2. 5 GPa ) can be produced by closed vacuum inductiongraphitization furnace, tension modulus of PAN CFobviously increases with a rise in maximum treatment temperature. PAN HMCF (tension modulus > 400GPa) can be produced byhigh temperature treatment. maximum trentment temperature at about 3000℃, Tensilestrength of PAN-CF decreases with a rise in maximum treatment tmperature. Tensilestrength of PAN HMCF can be improved by quickly increasing the rate of temperature risewithin certain range. The reason for property change of tension modulus, tensile strength.resistivity of PAN CF was discussed.
出处
《炭素》
1995年第1期1-9,共9页
Carbon
基金
国家教委高等学校博士学科点专项科研基金
北京中关村地区联合分析测试基金
