柠檬酸钴协同聚磷酸铵阻燃TPU的研究  

Study on Cobalt Citrate Synergistic Ammonium Polyphosphate Flame Retardant TPU

作　　者：徐亮 王珂 陈希磊 XU Liang;WANG Ke;CHEN Xi-lei(Shandong Taixing New Material Co.,Ltd.,Ji'nan 250200,China;College of Environment and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]山东泰星新材料股份有限公司,山东济南250200 [2]青岛科技大学环境与安全工程学院,山东青岛266042

出　　处：《塑料科技》2022年第1期9-13,共5页Plastics Science and Technology

摘　　要：通过柠檬酸钴(CoC)协同聚磷酸铵(APP),制备阻燃热塑性聚氨酯弹性体(TPU)复合材料,研究TPU复合材料的阻燃性和热稳定性。结果表明:CoC能够降低TPU/APP的热释放量和烟生成量。TPU/APP/CoC(0.125%)的THR和p SPR值分别比TPU/APP降低56.8%和31.5%。TPU/APP/CoC(0.5%)具有最高的FPI值(0.32(m^(2)·s)/kW)和最低的FGI值(2.16 kW/(m^(2)·s))。CoC能够在高温下分解成金属氧化物,促进APP分解并生成聚磷酸(盐),催化TPU成炭,改变凝聚相炭层结构,提高炭层的致密性和石墨化程度,形成隔热隔氧炭层,提高TPU的阻燃性和抑烟性。Flame retardant thermoplastic polyurethane elastomer(TPU) composites were prepared by cobalt citrate(CoC)and ammonium polyphosphate(APP), and the flame retardancy and thermal stability of TPU composites were studied. The results show that CoC can reduce the heat release and smoke production of TPU/APP. The THR and pSPR values of TPU/APP/CoC(0.125%) are 56.8% and 31.5% lower than those of TPU/APP, respectively. TPU/APP/CoC(0.5%) has the highest FPI(0.32(m^(2)·s)/kW) and the lowest FGI(2.16 kW/(m^(2)·s)). CoC can decompose into metal oxides at high temperature, promote APP decomposition and generate polyphosphate(salt), catalyze TPU to carbonize, and change the structure of condensed carbon layer. CoC can improve the compactness and graphitization degree of carbon layer, form thermal insulation and oxygen barrier carbon layer, and improve the flame retardancy and smoke suppression of TPU.

关 键 词：柠檬酸钴 聚磷酸铵 协同阻燃作用 热塑性聚氨酯弹性体 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]