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ABS树脂是众所周知的热塑性工程塑料。由于它的综合性能好,用途广,我国正在大力发展此品种。有关ABS树脂的结构分析以及与性能之间的关系,已有不少研究者进行了卓有成效的工作。我们对兰州化学工业公司合成橡胶厂的ABS树脂等,也初步进行了组成比、接枝效率,以及游离AS的分子量及分子量分布与性能之关系的探讨。到目前为止,对测定ABS树脂中游离AS的分子量及分子量分布,都是用有机溶剂经几步相分离后(若溶液不清晰,还须用2万—4万/分钟的高速离心机进行分离),得到纯的游离AS组分,再用凝胶渗透色谱(GPC)等方法来测定。这对大量开展这方面的工作仍觉不便。
ABS resin is a well-known thermoplastic engineering plastic. Because of its comprehensive performance, wide use, our country is vigorously developing this species. Many researchers have conducted fruitful work on the structural analysis of ABS resin and its relationship with performance. We also Lanzhou Chemical Industry Company synthetic rubber plant ABS resin, but also preliminary composition, grafting efficiency, as well as free AS molecular weight and molecular weight distribution and performance of the relationship. Up to now, the molecular weight and molecular weight distribution of free AS in ABS resin have been separated by several steps with organic solvent (if the solution is unclear, it must be separated by a high-speed centrifuge of 20,000-400 / min ), To obtain pure free AS fraction, and then by gel permeation chromatography (GPC) and other methods to determine. This still inconveniences the massive work in this area.