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30 Newest Publications about the topic methyl diphenyl isocyanate

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Atomistic Simulation of a Thermoplastic Polyurethane and Micromechanical Modeling

05-Sep-2017 | Nikolaos Lempesis; Pieter J. in ‘t Veld; Gregory C. Rutledge, Macromolecules, 2017

Thermoplastic polyurethanes constitute a versatile family of materials with a broad variety of engineering applications. However, connection between their chemical structure and mechanical properties remains elusive, in large part due to their heterogeneous nature, arising from segregation of ...

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Cast polyurethanes obtained from reactive recovered polyol intermediates via crude glycerine decomposition process

06-Aug-2017 | Author(s): Patrycja Jutrzenka Trzebiatowska, Ilona Deuter, Janusz Datta, Reactive and Functional Polymers, 2017

Publication date: Available online 31 July 2017 Source:Reactive and Functional Polymers Author(s): Patrycja Jutrzenka Trzebiatowska, Ilona Deuter, Janusz Datta In this work, the possibility of applying intermediates from polyurethane waste recycling in polyurethane synthesis was ...

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Polyurethanes with aggregation-enhanced emission characteristics: preparation and properties

13-Dec-2016 | Kun Wang; Jiping Yang; Chen Gong; Hao Lu, Faraday Discussions, 2016

An amino-terminated poly(propylene glycol)-modified tetraaryl-buta-1,3-diene derivative (TABDAA) was introduced to synthesize polyurethanes with different ratios of soft/hard segments. A mixture of TABDAA and poly(tetrahydrofuran) 1000 as the soft segments was reacted with 4,4-diphenylmethane ...

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Polyurethanes with Aggregation-Enhanced Emission Characteristics: Preparation and Properties

30-Aug-2016 | K Wang; Jiping Yang; C Gong; H Lu, Faraday Discussions, 2016

An amino-terminated poly(propylene glycol)-modified tetraaryl-buta-1,3-diene derivative (TABDAA) was introduced to synthesize the polyurethanes with different ratio of soft/hard segments. The mixture of TABDAA and poly(tetrahydrofuran) 1000 as soft segments reacted with 4,4-diphenylmethane ...

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Preparation and Characterization of Biodegradable Polyurethane Composites Containing Attapulgite Nanorods

01-Feb-2016 | Hsun‐Tsing Lee, Chi‐Hui Tsou, Chi‐Lan Li, Jia‐Hao Gu, Cheng‐Lung Wu, Jiunn‐Jer Hwang, Maw‐Cherng Suen, Advances in Polymer Technology, 2016

ABSTRACT In this study, polyurethane (PU) is synthesized using 4,4,‐diphenylmethane diisocyanate as the hard segments and polytetramethylene glycol and polycaprolactone diol as the soft segments. In addition, attapulgite (AT)/PU nanocomposites are prepared by adding AT into PU matrix. The ...

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Chain Extension and Modification of Polypropylene Carbonate using Diphenylmethane Diisocyanate

26-May-2015 | Xi‐yuan Wang, Xiao‐qian Diao, Nan Yang, Yun‐xuan Weng, Wen Wang, Polymer International, 2015

Abstract In the present work, with the application of diphenylmethane diisocyanate (MDI) as the chain extender, poly(propylene carbonate)(PPC) was modified by chain extension. The changes in the chemical, thermal, and mechanical properties of PPC after modification were characterized by ...

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Optimizing the lignin based synthesis of flexible polyurethane foams employing reactive liquefying agents

02-Mar-2015 | Jacopo Bernardini, Irene Anguillesi, Maria‐Beatrice Coltelli, Patrizia Cinelli, Andrea Lazzeri, Polymer International, 2015

Abstract The present work is focused on the optimization of a green process based on the employment of by‐products obtained from wood treatments as raw materials for producing flexible polyurethanes foams. More specifically, lignin was employed in flexible polyurethane foams in order to ...

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Dynamic mechanical properties of magnetorheological elastomers based on polyurethane matrix

28-Nov-2014 | Benxiang Ju, Rui Tang, Dengyou Zhang, Bailian Yang, Miao Yu, Changrong Liao, Xianlun Yuan, Lunwei Zhang, Junhong Liu, Polymer Composites, 2014

Magnetorheological elastomers (MRE) are mainly composed of soft magnetic particles and rubber‐like matrix. Previous studies have shown that the matrix has a greater impact on mechanical properties of MRE. In this article, a new kind of polyurethane material was fabricated and used as the matrix ...

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Micro‐gels for impact protection

25-May-2013 | Chao Zhou, Bo Wang, Fengtao Zhang, Kun Xu, Changyu Han, Hong Hu, Yanpin Liu, Pixin Wang, John H. Xin, Journal of Applied Polymer Science, 2013

ABSTRACT A novel kind of impact protective material, named as impact protective micro‐gel (IPM), was synthesized via a precipitation copolymerization of a compound containing boron and silanol. Diphenylmethane diisocyanate (MDI) was introduced as the chain extender to enhance its impact ...

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Rigid polyurethane foams modified with selected layered silicate nanofillers

20-May-2013 | Magdalena Danowska, Łukasz Piszczyk, Michał Strankowski, Maria Gazda, Józef T. Haponiuk, Journal of Applied Polymer Science, 2013

ABSTRACT The aim of this study was to investigate the effect of three different nanofillers on the properties of rigid polyurethane foams, which were prepared by a one‐step, laboratory‐scale method from a two‐component system at the ratio of NCO groups to OH groups equaled to 2. The reaction ...

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