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wwlglplove(lazy锦溪代发): 金币+10, 协助结帖，感谢应助 2015-09-18 12:55:46
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Thermal performances and fire behaviors of rosin-based rigid polyurethane foam nanocomposites 作者:Gao, LP (Gao, Liping)[ 1 ] ; Zheng, GY (Zheng, Guangyao)[ 1 ] ; Zhou, YH (Zhou, Yonghong)[ 1 ] ; Hu, LH (Hu, Lihong)[ 1 ] ; Feng, GD (Feng, Guodong)[ 1 ] JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 卷: 119 期: 1 页: 411-424 DOI: 10.1007/s10973-014-4192-6 出版年: JAN 2015 查看期刊信息 摘要 Microencapsulated intumescent flame retardants were successfully prepared by in situ polymerization technology and their structures were characterized by FTIR spectra, SEM microphotographs, and TG analyses. Microencapsulated treatments on expandable graphite (EG) and ammonium polyphosphate (APP) increased the expanded volume of EG and improved the water resistance of APP. After incorporation of microencapsulated intumescent flame retardants into RPUF, the prepared rosin-based rigid polyurethane foam possessed more uniform cell structure and higher compressive strength than incorporation of the same amount of intumescent flame retardants. It is attributable to improved interfacial adhesion and stress transfer between microencapsulated intumescent flame retardants and RPUF matrix. Simultaneously, after incorporation of microencapsulated intumescent flame retardants into RPUF, the prepared rosin-based rigid polyurethane foam possessed better flame retardancy and fire behavior than incorporation of the same amount of intumescent flame retardants. It is attributed to better synergistic effect between microencapsulated expandable graphite and ammonium polyphosphate in gas and condensed phases. Furthermore, synergistic flame retardant rosin-based rigid polyurethane foam nanocomposite was successfully fabricated by adjusting the appropriate ratio of microencapsulated intumescent flame retardants and organically modified layered double hydroxide. The LOI value and the specific compressive strength for filled MEG(10)/MAPP(10)/OLDH3.0 foam increased about 36.4 and 1.7 % compared with neat RPUF. The cone calorimetry measurement showed that the average heat release rate, total heat release, average smoke production rate, average rate of smoke release, average specific extinction area, total smoke release, and CO/CO2 mass ratio of filled MEG(10)/MAPP(10)/OLDH3.0 foam decreased about 23.2, 20.2, 50.0, 48.3, 35.4, 33.0, and 21.3 % compared with neat RPUF, respectively. Therefore, using microencapsulated intumescent flame retardants and organically modified layered double hydroxide are promising strategies for simultaneously improving the flame retardancy, mechanical property, and fire behavior of rigid polyurethane foams. 关键词 作者关键词:Thermal performance; Fire behavior; Microencapsulated intumescent flame retardants; Organically modified layered double hydroxide KeyWords Plus:LAYERED DOUBLE HYDROXIDE; MICROENCAPSULATED AMMONIUM POLYPHOSPHATE; INTUMESCENT FLAME-RETARDANT; EXPANDABLE GRAPHITE; POLYMERS; FORMULATIONS; STABILITY 作者信息 通讯作者地址: Zheng, GY (通讯作者) Natl Engn & Technol Res Ctr Forest Chem Ind, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China. 地址: [ 1 ] Natl Engn & Technol Res Ctr Forest Chem Ind, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China 电子邮件地址:zhguya@sina.com 基金资助致谢 基金资助机构 授权号 Jiangsu Province Natural Science Foundation of China BK20130071 National 12th Five-year Science and Technology Support Plan 2012BAD32B05 查看基金资助信息 出版商 SPRINGER, VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS 类别 / 分类 研究方向:Chemistry Web of Science 类别:Chemistry, Analytical; Chemistry, Physical 文献信息 文献类型:Article 语种:English 入藏号: WOS:000347408300044 ISSN: 1388-6150 eISSN: 1572-8943 期刊信息 目录： Current Contents Connect® Impact Factor (影响因子): Journal Citation Reports® 其他信息 IDS 号: AY2HA Web of Science 核心合集中的 "引用的参考文献": 31 Web of Science 核心合集中的 "被引频次": 2 |
2楼2015-09-15 09:07:15
wwlglplove
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3楼2015-09-18 08:56:29
wwlglplove
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4楼2015-09-18 08:57:20
