【摘要】 利用聚丙烯腈纤维废料作原料，在高温、高压条件下催化水解。经筛选确定最佳工艺条件，使之水解为具有一定粘度和强度的水溶性胶液。对水解液性能进行研究并应用在铸造行业作为芯砂粘结剂。根据铸造性能要求，对阻燃性和湿强度进行复配改性研究。结果表明：当温度为１９０℃、压力为１．４５ＭＰａ时的水解液，与阻燃剂和交联剂复合后在砂中加入量为４％时，砂芯比抗拉强度大于０．６０ＭＰａ／１％，湿压强度为０．０１６—０．０２２ＭＰａ。更多还原

【Abstract】 Waste poly acrylonitrile fibres are hydrolyzed catalytically under conditions of high pressure and temperature The hydrolysate can be used as casting adhesive, with good fire resistance and wet compression strength When the content of the modified and compounded adhesive is 4%, the specific tensile strength of sand cores is 0 60MPa·(1%) -1 and the wet compression strength is 0 022 MPa Contrasting with synthetic binder,the adhesive has the advantages of high strength,low gas releasing and no pollution更多还原