The effect of mold temperature on chemical foaming of injection molded recycled polyethylene-terephthalate

被引：17
作者：
Ronkay, Ferenc [1 ]
Molnar, Bela [1 ]
Dogossy, Gabor [2 ]
机构：
[1] Budapest Univ Technol & Econ, Dept Polymer Engn, Muegyetem Rkp 3, H-1111 Budapest, Hungary
[2] Szechenyi Istvan Univ, Dept Mat Sci & Technol, Egyet Ter 1, H-9026 Gyor, Hungary
来源：
THERMOCHIMICA ACTA | 2017年 / 651卷
基金：
匈牙利科学研究基金会;
关键词：
Chemical foaming; Recycled PET; Injection molding; Morphology; MECHANICAL-PROPERTIES; POLY(ETHYLENE-TEREPHTHALATE); PET; CRYSTALLIZATION; MORPHOLOGY; BOTTLES; BLENDS;
D O I：
10.1016/j.tca.2017.02.013
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Foam injection molded samples were produced from recycled polyethylene-terephthalate using endothermic and exothermic foaming agents at different mold temperatures. The foam structure was analyzed by computer tomography and optical microscopy. The morphological properties of samples were analyzed by differential scanning calorimetry, using the three-phase model. Viscosities of the melts were changed during processing by endothermic and exothermic foaming agents, and as a result different foam structures were formed. Relationships between mold temperature and porosity were found. Morphologies of the samples made with different foaming agents were different, also due to the different cooling rates caused by the endothermic and exothermic foaming reactions. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：65 / 72
页数：8
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