期刊
THERMOCHIMICA ACTA
卷 653, 期 -, 页码 116-125出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tca.2017.04.008
关键词
Morphology; Thermal property; Polyurethane elastomer; Chain extender; Para-phenylene
资金
- National Natural Science Foundation of China [51372200]
- Program for New Century Excellent Talents in University of Ministry of Education of China [NCET-12-1045]
- Special Program for local serving from Education Department of Shaanxi Provincial Government [2013JC19]
- Program for Innovation Team in Xi'an University of Technology [108-25605T401]
- Ph.D. Innovation Fund Projects of Xi'an University of Technology [310-252071501]
- Scientific Research Plan Projects of Shaanxi Education Department [16JK1551]
- China Postdoctoral Science Foundation Funded Project [2016M592824]
Since polyurethane elastomer (PUE) is widely used in many fields, it is always the popular topic in the scientific research. In this paper 1,4-butanediol (1,4-BDO), neopentyl glycol (NPG) and bisphenol-a (BPA) were chosen as chain extenders to prepare polyurethane elastomer (PUE) due to their representative structures. After the synthesis of PUE with these comparable chain extenders, morphology and thermal properties were evaluated by different characterization methods The results showed that, compared with NPG and BPA, 1,4-BDO has made PUE in synthesis of para-phenylene (PPDI) more easily crystallize in soft segments while PUE based on diphenyhnethane diisocyanate (MDI) arrange orderly in hard segments, so that micro-phase separation appeared. Besides, PUE in synthesis of PPDI and 1,4-BDO showed the best thermal stability. Additionally, chain extenders increased the viscosity of samples, especially 1,4-BDO, which made PUE not only have a relatively higher viscosity, but also maintain a good process ability.
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