摘要
Polyurethane/desulfurization ash(PU/DA)composites were synthesized using"one-pot method",with the incorporation of a silane coupling agent(KH550)as a"molecular bridge"to facilitate the integration of DA as hard segments into the PU molecular chain.The effects of DA content(φ)on the mechanical properties,thermal stability,and hydrophobicity of PU,both before and after the addition of KH550,were thoroughly examined.The results of microscopic mechanism analysis confirmed that KH550 chemically modified the surface of DA,facilitating its incorporation into the polyurethane molecular chain,thereby significantly enhancing the compatibility and dispersion of DA within the PU matrix.When the mass fraction of modified DA(MDA)reached 12%,the mechanical properties,thermal stability,and hydrophobicity of the composites were substantially improved,with the tensile strength reaching 14.9 MPa,and the contact angle measuring 100.6°.
作者
吴旺华
CHEN Shuichang
YE Haodong
李世迁
LIN Yuanzhi
陈庆华
XIAO Liren
WU Wanghua;CHEN Shuichang;YE Haodong;LI Shiqian;LIN Yuanzhi;CHEN Qinghua;XIAO Liren(College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350117,China;College of Materials and Package Engineering,Fujian Provincial Key Lab of Coastal Basin Environment,Fujian Polytechnic Normal University,Fuqing 350300,China;College of Agriculture,Guangxi University,Guangxi 530004,China)
基金
Funded by the National Key Research and Development Project(No.2019YFC1908204)
the Guiding Projects in Fujian Province(No.2023H0023)
the Fuzhou Science and Technology Plan Project(No.2022-P-012)。
