摘要
将BaCl2分级的k型卡拉胶(KC)和纳米氢氧化铝〔Al(OH)3〕构成的协同阻燃体系添加到天然橡胶(NR)中制备KC-Al(OH)3/NR复合材料。通过TG、极限氧指数(LOI)、锥形量热(CCT)以及SEM考察了不同质量比的KC和Al(OH)3对复合材料力学性能和阻燃性能的影响。结果表明,当KC与Al(OH)3以1∶1的质量比加入到NR时,KC-Al(OH)3/NR复合材料的热稳定性、阻燃性能最优,复合材料的LOI达到25%。与纯天然橡胶相比,复合材料总热释放量(THR)、热释放速率峰值(pHRR)、总烟释放量(TSP)和平均质量损失率(AMLR)分别降低了12%、65%、23%和62%。相比于单独添加Al(OH)3体系,复合材料拉伸强度和断裂伸长率分别增加了11%和17%。
A synergistic flame retardant system consisting of carrageenan(KC)precipitated by BaCl2 and nano-aluminium hydroxide〔(Al(OH)3)〕was added into natural rubber(NR)to prepare KC-Al(OH)3/NR composites.The effects of different mass ratios of KC to Al(OH)3 on the flame retardancy and mechanical properties of NR composites were tested by thermal gravimetric analysis(TG),limited oxygen index(LOI),and cone calorimetry test(CCT).The results showed that when KC and Al(OH)3 were added into NR at a mass ratio of 1∶1,KC-Al(OH)3/NR composite had the best thermal stability and flame retardancy.The NR composite displayed a LOI value of 25%and reached UL-94 V-0 rating.The total heat release(THR),peak heat release rate(pHRR),total smoke production(TSP)and average mass loss rate(AMLR)of NR composite were decreased by 12%,65%,23%and 62%compared with those of pure NR.The tensile strength and elongation at break of NR composite were increased by 11%and 17%,respectively,compared with that of the NR composite contained Al(OH)3 alone.
作者
王娜
张鑫雨
滕海伟
张静
方庆红
王娇
WANG Na;ZHANG Xinyu;TENG Haiwei;ZHANG Jing;FANG Qinghong;WANG Jiao(Sino-Spanish Advanced Materials Institute,Shenyang University of Chemical Technology,Shenyang 110142,Liaoning,China;Liaoning Provincial Key Laboratory of Rubber&Elastomer,Shenyang 110142,Liaoning,China;Zhejiang Petrochemical Co.,Ltd.,Zhoushan 316021,Zhejiang,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2020年第3期598-603,共6页
Fine Chemicals
基金
国家自然科学基金(51973124)
辽宁省高等学校优秀人才支持计划资助([2017]053)
沈阳市科技局中西高等材料研究院资助项目(18-005-6-04)
辽宁省科技厅-沈阳材料科学国家研究中心联合研发基金项目(2019JH3/30100015)。
关键词
天然橡胶
卡拉胶
纳米氢氧化铝
阻燃剂
橡塑助剂
natural rubber
carrageenan
nano-aluminium hydroxide
flame retardant
rubber and plastics auxiliaries
