公开(公告)号：US4388410A

公开(公告)日：1983-06-14

申请号：US223856

申请日：1981-01-09

申请人： Nestor A. Arroyo ,  Nitin V. Desai ,  James F. Buchanan

发明人： Nestor A. Arroyo ,  Nitin V. Desai ,  James F. Buchanan

IPC分类号： G01N5/04 ,  G01N33/44 ,  G01N25/00

CPC分类号： G01N33/442 ,  G01N5/04 ,  Y10S436/908 ,  Y10T436/196666

摘要： A method for thermogravimetrically analyzing a plastic molding composition comprising carbon black and a vinyl chloride homopolymer or copolymer molding resin to determine the carbon black content wherein the method comprises the steps of compounding the molding composition so that the carbon black is uniformly dispersed therein, heating the molding composition in an inert atmosphere to a temperature sufficient to reproducibly thermally decompose the vinyl chloride homopolymer or copolymer, maintaining the molding composition at the decomposition temperature in an inert atmosphere for a first given time which is long enough so that there is no further significant weight loss, weighing the molding composition to determine the weight loss during the first given time and comparing the weight loss for the first given time with that for samples of known composition analyzed under the same conditions to determined the carbon black content of the molding composition.

摘要翻译： 一种用于热重分析包含炭黑和氯乙烯均聚物或共聚物模塑树脂的塑料模制组合物以确定炭黑含量的方法，其中所述方法包括将所述模塑组合物混合以使所述炭黑均匀分散在其中的步骤，加热 将模塑组合物在惰性气氛中至足以可再热地热分解氯乙烯均聚物或共聚物的温度，将模塑组合物在惰性气氛中保持在分解温度下达到足够长的第一给定时间，使得不再有显着的重量 损失，称量模制组合物以确定在第一给定时间内的重量损失，并将第一给定时间的重量损失与在相同条件下分析的已知组合物的重量损失进行比较以确定模制组合物的炭黑含量。