纳米氧化锆改性酚醛树脂基复合材料研究

Study on PF-basis composite modified by nano-zirconia

以PF(酚醛树脂)为基体树脂、纳米氧化锆为隔热耐烧蚀填料、高硅氧纤维和海泡石纤维为增强填料,制备了相应的复合材料。考察了纳米氧化锆含量对高硅氧-海泡石纤维/PF复合材料的力学性能、线烧蚀率、比热容和导热系数等影响。结果表明:当w(氧化锆)=5%时,该复合材料的拉伸强度、压缩强度和弯曲强度相对最大;当w(氧化锆)=10%时,该复合材料的线烧蚀率、比热容和导热系数相对最低,隔热性能明显提高。

With PF（phenolic resin） as matrix resin,nano-zirconia as a filler with thermal insulation and burn- resistance,high silica fibres and sepiolite fibre as reinforcing fillers,the corresponding composite was prepared. The influences of nano-zirconia contents on mechanics properties,linear burning rate,specific heat capacity and thermal conductivity Of high silica fibres-sepiolite fibre/PF composite were investigated. The results showed that the composite had reversely maximum tensile strength, compressive strength and bend strength when mass fraction of zirconia was 5%. The thermal insulation of composite was obviously improved because it had reversely lowest linear burning rate,specific heat capacity and thermal conductivity when mass fraction of zirconia was 10%.