The Effect of Gas Absorption Induced a Change of Glass Transition Temperature in Microcellular Foamed Plastics

초미세 발포 플라스틱의 유리전이온도를 변화시키는 가스 용해량의 영향

  • Published : 2001.05.01


The thermoforming process is widely used in the plastics industry to produce articles for the packaging, automotive, domestic construction and leisure industries. The microcellular foaming process appeared at M.I.T. in 1980s to save a quantity of polymer materials and increase their mechanical properties. The glass transition temperature of polymer materials is one of many important process variables in appling the microcellular foaming process to the conventional thermoforming process. The goal of this research is to evaluate the relation between gas absorption and glass transition temperature in batch process using microcellular foaming process. The weight gain ratio of polymer materials has a conception of gas absorption. Polymers such as acrylonitrile-butadiene-styrene(ABS), polystyrene(PS) have been used in this experiment. According to conventional Chows model and Cha-Yoon model, it was estimated with real experimental result to predict a change of glass transition temperature as a function of the weight gain ratio of polymer materials in batch process to gain microcellular foamed plastic products.


Microcellular Foaming Process;Batch Process;Thermoforming Process;Glass Transition Temperature;Gas Absorption;Weight Gain Ratio


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