负载金属氧化物活性炭对阻燃橡胶硫化、燃烧及热老化性能的影响  

Effect of Metal Oxide Supported on Active Carbon on Vulcanization,Combustion and Thermal Ageing Properties of Flame Retardant Rubber

作　　者：彭辉[1] 周友[1] 郝建薇[1,2] 李茁实[2] 邹红飞 

机构地区：[1]北京理工大学材料学院,阻燃材料国家工程技术研究中心,北京100081 [2]宝胜科技创新股份有限公司,江苏省特种电缆与可靠性研究重点实验室,扬州225800

出　　处：《高等学校化学学报》2015年第12期2569-2575,共7页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21474008)资助~~

摘　　要：利用金属氧化物(MO)催化协效阻燃和改善热老化的作用,以及竹基活性炭(AC)富孔、比表面积大的特性,采用溶剂蒸发法将Fe_2O_3,Cu O和Zn O负载于AC上,得到了负载金属氧化物活性炭(AC-MO),并研究了AC-MO协效聚磷酸铵/双季戊四醇膨胀阻燃乙烯-醋酸乙烯酯共聚物橡胶(EVM)的硫化、燃烧、热稳定性及耐热老化性能.结果表明,AC-MO为目标产物且MO分散均匀,AC及AC-MO在阻燃EVM中分散均匀;AC-MO增大了阻燃EVM的最大扭矩并提高了阻燃性能及残炭量,其中AC-Fe_2O_3效果最佳;将Fe_2O_3负载于AC上提高了AC的催化成炭能力,改善了阻燃EVM残炭的完整性、致密性,最终阻燃性能得到提高.热老化实验后,AC-MO提高了阻燃EVM热老化后的拉伸强度,但断裂伸长率有所降低.With the excellent catalytic synergistic flame retardancy of metal oxide （MO） and its effect of improving the thermal ageing property as well as the porous and large specific surface area characteristic of bamboo based active carbon（AC）, a series of metal oxide（Fe2O3, CuO, ZnO） supported on active carbon （AC-MO） synergist was prepared by solvent evaporation method. The vulcanization, combustion, thermosta- bility, and thermal ageing properties for synergistic intumescent flame retardant ethylene vinyl-acetate copoly- mer rubber （EVM） with AC-MO and ammonium polyphosphate/dipentaerythritol was studied. The results showed that AC-MO was the target product and MO dispersed well when supported on AC. AC and AC-MO had a uniform dispersion in the flame retardant EVM. The introduction of AC-MO improved the maximum torque, flame retardancy, and char residue, especially for AC-Fe2O3. A Fe2O3 supported on AC improved its catalytic charring effect, which improved the integrity and compactness of char residue of flame retardant EVM. As a result, the flame retardancy was improved. After thermal ageing test, the tensile strength of EVM/ IFR/AC-MO increased while the elongation at break decreased.

关 键 词：活性炭 金属氧化物 逾渗作用 催化阻燃 橡胶 

分 类 号：O631[理学—高分子化学]