| WATER-BLOWN POLYURETHANE RIGID FOAMS MODIFIED BY CHEMICAL PLASTICATION |
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| 引用本文： | YU Ming XU Qiang School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China. WATER-BLOWN POLYURETHANE RIGID FOAMS MODIFIED BY CHEMICAL PLASTICATION[J]. Chinese Journal of Reactive Polymers, 2006, 0(1) |
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| 作者姓名： | YU Ming XU Qiang School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China |
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| 作者单位： | YU Ming XU Qiang School of Materials Science and Engineering，East China University of Science and Technology，Shanghai 200237，China |
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| 摘 要： | 1. INTRODUCTIONThese years, HCFC-141b may be the most used blowing agent for its useful properties. But, because of its high global warming effect leading to the destruction of the ozone layer, production of HCFC141b has been forbidden. However, there are…
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WATER-BLOWN POLYURETHANE RIGID FOAMS MODIFIED BY CHEMICAL PLASTICATION |
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| YU Ming XU Qiang School of Materials Science and Engineering,East China University of Science and Technology,Shanghai ,China. WATER-BLOWN POLYURETHANE RIGID FOAMS MODIFIED BY CHEMICAL PLASTICATION[J]. 离子交换与吸附(英文版), 2006, 0(1) |
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| Authors: | YU Ming XU Qiang School of Materials Science Engineering East China University of Science Technology Shanghai China |
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| Affiliation: | YU Ming XU Qiang School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China |
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| Abstract: | Water-blown polyurethane rigid foams are getting more and more attention,because the traditional blowing agent HCFC141b has already been abolished to prevent the ozone layer from destruction.However,the polyurethane rigid foams blown by water have serious defects,i.e.friability and resulting lower adhesion strength.Thus,the purpose of this study is to resolve the problems by chemical plastication.The maleate was added to polyol-premix containing water or to polyisocyanate,with both of which maleate does not react.To prove the reaction when polyol-premix and polyisocyanate were mixed,the model composite was synthesized and analyzed by IR,NMR and ESI(MS).Furthermore,a series of water-blown polyurethane rigid foams added different amount maleate were successfully prepared.By testing impact strength and adhesion strength of the foams,the actual effect of adding maleate was obtained. |
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| Keywords: | Water-blown Rigid foams Chemical plastication. |
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