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SYNTHESIS OF polyurethane MODIFIED BISMALEimide (UBMI) AND polyurethane-imide ELASTOMER

Chinese Journal of Polymer Science 2008年第1期26卷 117-119页

作者： Xu, Tao Yuan, Wei Wang, Shen-jun Li, Zai-feng Sun, Bao-quan Wang, Min-xuan Qingdao Univ Sci & Technol Coll Chem & Mol Engn Qingdao 266042 Peoples R China SINOPEC Shengli Petr Adm Inst Oil Proc Shengli Oilfield Dongying 257001 Peoples R China

Urethane modified bismaleimide(UBMI)was synthesized by the reaction of maleic anhydride(MA)with NCO group terminated polyurethane prepolymer(PUP)in presence of *** product was determined by infrared analysis. Then ultrasonic assistant process was introduced into the solvent removal of the prepolymer mixture of UBMI and PUP. polyurethane-imide(PUI)elastomer was synthesized from the above PUP-UBMI prepolymer mixture by the infusion technology with 2,5-dimethyl-2,5-bis(tert-butylperoxy)-hexane(B25)as l...

关键词： UBMI polyurethane-imide Preparation

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Synthesis and Properties of Novel polyurethane-imide Elastomers

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Open Journal of Organic Polymer Materials 2018年第1期8卷 1-13页

作者： Tomohiro Ueda Shin-Ichi Inoue Department of Applied Chemistry Aichi Institute of Technology Toyota Japan

Novel polyurethane-imide elastomers were prepared from isocyanates (hexamethylene, and 4,4’-dicyclohexyl diisocyanates), polytetramethylene glycol (PTMG1000, Mw = 1000), pyromellitic dianhydride, and 4,4’-diphenylmethane diamine. The formation of PUIEs was confirmed by Fourier transform infrared spectroscopy. The resultant films were studied through X-ray diffraction analysis, contact angle measurement, atomic force microscopy, solubility and swelling tests, tensile test, differential scanning calorimetry, dynamic mechanical analysis, and thermogravimetric analysis.

关键词： polyurethane-imide Elastomer Isocyanate Morphology Mechanical and Thermal Properties

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Thermoplasticity in polyurethane-imide Elastomers

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Open Journal of Polymer Chemistry 2018年第1期8卷 11-20页

作者： Tomohiro Ueda Shin-Ichi Inoue Department of Applied Chemistry Aichi Institute of Technology Toyota Japan

polyurethane-imide elastomers (PUIEs) are formed from isocyanates, polyols, diamines, and acid anhydrides through liquid polymerization. However, thermoplastic PUIEs have rarely been reported because the synthesis of thermoplastic PUIEs remains a challenge in polymer chemistry. In this study, PUIEs were prepared from 4,4'-diphenylmethane diisocyanate, polyols (polytetramethylene glycol (Mw = 1000), polycaprolactone diol (Mw = 1000), and polycarbonate diol (Mw = 1000)), 4,4'-oxydianiline, and acid anhydrides (pyromellitic dianhydride and 4,4'-oxydiphtaric anhydride). The thermoplasticities of the resultant PUIEs were investigated, and only PUIEs synthesized using 4,4'-oxydiphtaric anhydride expressed thermoplasticity.

关键词： polyurethane-imide Elastomer Polyol Acid Anhydride Morphology Chemical and Physical Properties

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Influences of Diamines on the Morphologies and the Chemical, Thermal, and Mechanical Properties of polyurethane-imide Elastomers

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Open Journal of Organic Polymer Materials 2017年第4期7卷 47-60页

作者： Tomohiro Ueda Tomohiro Nishio Shinichi Inoue Department of Applied Chemistry Aichi Institute of Technology Toyota Japan Technical Center Department of Product Development Nitta Corporation Ltd. Yamatokohriyama Japan

polyurethane-imide elastomers (PUIEs) are formed from isocyanate, polyol, acid anhydride, and diamine by liquid polymerization. Unfortunately, many of the diamines have rarely been applied to the formation of PUIEs. Hence, investigating the effect of diamines on PUIEs remains a challenge in polymer chemistry. Herein, PUIEs prepared from 4,4'-diphenylmethane diisocyanate (MDI), polytetramethylene glycol (Mw: 1000), pyromellitic dianhydride, and aromatic diamines (such as p-phenylene diamine, 4,4'-oxydianiline, and 1,3-bis(4-aminophenoxy)benzene), and aliphatic diamines (such as 1,2-ethylene diamine, 1,6-hexamethylene diamine, and 1,12-dodecamethylene diamine) were synthesized by liquid polymerization. The morphologies and the chemical, thermal, and mechanical properties of the various PUIEs were investigated. The obtained elastomeric sheets were characterized in terms of the following tests and methods: solubility and swelling tests, X-ray diffraction and differential scanning calorimetry, dynamic mechanical analysis and thermogravimetric analysis, tensile tests, nuclear magnetic resonance spectroscopy, infrared spectroscopy, atomic force microscopy, contact angle microscopy, and scanning electron

关键词： polyurethane-imide Diisocyanate Polyol Diamine Pyromellitic Dianhydride Solution Polymerization

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