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一、前言目前GPC(凝胶渗透色谱仪)与自动粘度测定仪联用技术是表征高聚物有关参数和测定高聚物长链支化度的有力手段。该技术除直接测高聚物的分子量,分子量分布,粘度常数K和α外,又可对凝胶色谱柱的分离与扩展效应进行同时校准,并在此基础上准确地估定长键支化参数,使GPC的使用范围也得到了扩大。 NCZ-1型自动粘度测定仪(以下简称测定仪)由长春市第二试验机厂和科学院长春应化所协作,经过几年努力研制成功。其基
I. Introduction At present, GPC (gel permeation chromatography) and automatic viscometer technology is a powerful means to characterize the relevant parameters of polymer and determine the degree of long chain branching of polymer. In addition to directly measuring the molecular weight, molecular weight distribution, viscosity constants K and α of the polymer, the technology can simultaneously calibrate the separation and expansion effects of the gel column and accurately estimate the long-chain branching Parameters, the scope of GPC has also been expanded. NCZ-1 Automatic Viscometer (hereinafter referred to as the tester) by Changchun City, the second test machine factory and Changchun Institute of Science should collaborate, after several years of hard work to develop successful. Its base