摘要
为解决层状金属复合材料在制坯—热轧过程中隔离剂添加困难及均匀性的关键问题,采用具有耐高温特性的无机物为原料通过高分子改性技术制备高耐热性的热轧层压金属复合材料隔离膜,通过扫描电镜、材料万能试验机及热重分析仪等研究隔离膜的微观结构、力学性能和热分解特性,并进行实际轧制效果验证。结果表明:应用高分子改性技术制备的层压金属隔离膜,无机物嵌入分散于有机高分子材料骨架,复合板坯热轧过程中高分子材料充分热分解而留下耐高温无机物在金属表面发挥隔离复层金属非结合面结合功效。耐高温无机物质量分数为55%~75%时,制备的隔离膜柔韧性较好。耐高温无机物粒度对复层金属表面质量存在一定影响,宜筛选粒径Eμm以下耐高温无机物为原料制备隔离膜。
To solve the problems of isolation agent addition in blocking-hot rolling process for layered metal composites,isolation membrane with high heat resistance used for hot rolling laminated metal composite was prepared using inorganic substance with high temperature resistant as raw material which was modified by polymer.The microstructure,mechanical properties and thermal decomposition characteristics of the isolation membrane were analyzed by scanning electron microscopy(SEM),the material universal testing machine and thermogravimetric analyzer,respectively.And the actual rolling effects of the membrane were also verified.The results show that the inorganic substance is embedded and dispersed in the framework of organic polymer which can be fully decomposed in the hot rolling process of the composite slab.And the inorganic substance remains in the surface of the metal,isolating the bonding of the unbonded surface of the cladding metal.The isolation membrane with a better toughness can be obtained at 55%~75%of the inorganic substance.The particle size of the inorganic substance has an effect on the surface quality of the laminated metal,and it is optimized at less than Eμm.
作者
张凤珍
杜顺林
王庭昆
姜庆伟
Zhang Fengzhen;Du Shunlin;Wang Tingkun;Jiang Qingwei(Science and Technology Innovation Center of Kunming Iron and Steel Holding Co.,Ltd.,Kunming 650302,Yunnan,China;Yunnan Kunming New Composite Materials Development Co.,Ltd.,Kunming 650302,Yunnan,China;School of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650000,Yunnan,China)
出处
《钢铁钒钛》
CAS
北大核心
2020年第5期71-76,共6页
Iron Steel Vanadium Titanium
基金
国家自然科学基金(51201077)资助
关键词
层压金属复合材料
隔离膜
高分子改性
耐高温无机物
热分解
laminated metal composites
isolation membrane
polymer modification
high temperature inorganic material
thermal decomposition
