复配阻燃剂协同改性木粉/聚丙烯复合材料的制备与阻燃性能研究  

Study on Preparation and Flame retardancy of WF/PP Composites Synergistically Modified with Composite Flame Retardants

作　　者：赵玉环 ZHAO Yu-huan(Hainan Vocational University of Science and Technology,Haikou 570100,China)

机构地区：[1]海南科技职业大学,海南海口570100

出　　处：《塑料科技》2024年第1期67-70,共4页Plastics Science and Technology

摘　　要：木塑复合材料(WPC)作为一种可再生建筑材料,因阻燃性能较差限制其安全使用。为提高材料的阻燃性能,文章将改性聚磷酸铵(M-APP)和膨胀石墨(EG)组成的复配阻燃剂加入WPC基体,制备WPC复合材料,并对其力学性能、阻燃性能和热稳定性进行测试。结果表明:相比未改性WPC,当M-APP和EG的比例为1:1时,WPC/A1/E1的LOI值提高了44.4%,热释放速率峰值降低了80.1%,总烟量下降了91.6%。WPC/A1/E1的拉伸强度为25.1 MPa,与未改性WPC相比增加了3.7%。WPC/A1/E1的弯曲强度为45.1 MPa,与未改性WPC相比增加了1.1%。WPC/A1/E1残炭率为27.5%,与未改性WPC相比提升了76.3%。当M-APP和EG的比例为1:1时,WPC/A1/E1具有较好的综合性能。Wood-plastic composite(WPC) is a kind of renewable building material,but its poor flame retardancy limits its safe use.In order to improve the flame retardancy of WPC composites,the compound flame retardant composed of modified ammonium polyphosphate(M-APP) and expanded graphite(EG) was added into the WPC matrix to prepare WPC composites.The mechanical properties,flame retardancy and thermal stability of WPC composites were tested.Compared with unmodified WPC,when the ratio of M-APP to EG is 1:1,the LOI value of WPC/A1/E1 increases by 44.4%,the peak heat release rate decreases by 80.1%,and the total smoke production decreases by 91.6%.The tensile strength of WPC/A1/E1 is 25.1 MPa,which is 3.7% higher than that of unmodified WPC.The flexural strength of WPC/A1/E1 is 45.1 MPa,which is 1.1% higher than that of unmodified WPC.The carbon residue of WPC/A1/E1 is 27.5%,which increases by 76.3% compared with unmodified WPC.When the ratio of M-APP to EG is 1:1,WPC/A1/E1 has better comprehensive properties.

关 键 词：木塑复合材料 改性聚磷酸铵 膨胀石墨 阻燃性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ325.14[化学工程—合成树脂塑料工业]