【摘要】 <正> 丁二烯-丙烯腈共聚物作为一种耐油性能优良的橡胶(丁腈橡胶),有十分广泛的用途。共聚物中腈基含量与其耐油、耐低温性能关系甚大,用途亦各有异。因此,在生产和使用中都须测定该共聚物中引进之丙烯腈含量。一般的元素分析定氮法(简称定氮法)周期较长,当共聚物更多还原

【Abstract】 Pyrolysis gas chromatography (PGC) equipped with carbon dioxide laser pyrolyzer was used for rapid determination of monomer component composition of acrylonitrilebutadiene copolymers. Relative ratio of peak height of the acrylonitrile to butadiene in the pyrograms exists good linear relationship with monomer component composition of the corresponding copolymers. Employing a standard curve, three samples of acrylonitrile-butadiene rubber with unknown composition were determined conveniently. The results show that the results from laser pyrolyses agreed quite well with those from chemical analyses.更多还原