【摘要】 本文针对聚全氟乙丙烯(Fs-46)树脂的耐辐照性质,对照研究了普通Fs-46树脂与分子量大于20万Fs-46树脂的耐辐照及抗热老化性质。在190_-~+2℃饱和水蒸汽0.2～3.0kPa压力下,经(γ-射线(1×10~6库仑)照射后。再于200℃经4320小时的热老化模拟试验,后者机械强度基本不变,前者的机械强度明显下降。结果表明分子量大于20万的Fs-46树脂具有比普通树脂Fs-46更好的耐辐照和抗热老化性能。更多还原

【Abstract】 The radiation resistance and resistance to heat deterioration between the commercial polyperfluoroethylene - propylene resin (Fs - 46) and high molecular weight one( MW>2 × 10 ) were compared. The representative Fs - 46 and high MW resin were treated by y - radiation(1 × 106lu ) under 0. 2 - 0. 3 kPa of saturated steam at 190± 2℃ for 8. 25h. and some samples after radiation treatment were then subjected to the heat deterioration at 200℃ for 4320 h. It was found that the high MW copolymer can preserve the original mechanical properties while the commercial ones were destroyed. The high MW Fs - 46 resin demonstrated its better properties of the radiation resistance and resistance to heat deterioration.更多还原