摘要
采用原位聚合法制备了三聚氰胺甲醛树脂包覆聚磷酸铵(MFAPP),并用扫描电镜(SEM)、傅里叶红外光谱(FTIR)进行了表征;同时制备了Mg(OH)2包覆红磷[Mg(OH)2-en-P],采用扫描电镜(SEM)、吸湿率测定表征包覆效果。考察了MFAPP以及MFAPP和Mg(OH)2-en-P与聚丙烯(PP)共混的两种复合材料的阻燃性能和力学性能。结果表明,MFAPP对PP的阻燃效果并不理想,加入少量Mg(OH)2-en-P后阻燃效果明显提升;当MFAPP和Mg(OH)2-en-P的质量分数分别为20%和5%时,复合材料可以通过水平燃烧等级测试,垂直燃烧等级达到UL 94 V-1级;弯曲强度和缺口冲击强度与纯PP基本相同,分别为42 MPa和6.18 k J/m2,拉伸强度降低至24.15 MPa。
Melamine formaldehyde resin coated ammonium polyphosphate （MFAPP） was prepared by in situ polymerization and characterized with scanning electron microscopy （SEM） and Fourier transform infrared spectroscopy （FFIR）. Magnesium hydrate encapsulated red phosphorus [ Mg （ OH ） 2-en-P ] was also prepared and the coating effect was characterized by SEM and water absorption testing. The flame retardance and mechanical properties of polypropylene （PP） composites with MFAPP and MFAPP/ Mg（OH） 2-en-P respectively were studied. The results indicated that the flame retardancy of MFAPP for PP was not ideal, but it was obviously improved when adding small amount of Mg （OH）z-en-P. The composite materials passed horizontal flame test with vertical burning level of UL 94 V-1 when mass fraction of MFAPP and Mg （OH）2-en-P were 20% and 5% respectively. Bending strength and notch impact strength of the composite were 42 MPa and 6. 18 kJ · m^-2 respectively, which were basically the same as pure PP, but the tensile strength decreased to 24. 15 MPa.
出处
《塑料工业》
CAS
CSCD
北大核心
2015年第6期83-87,92,共6页
China Plastics Industry
关键词
三聚氰胺甲醛树脂
氢氧化镁
包覆红磷
聚丙烯
阻燃
力学性能
Melamine Formaldehyde Resin
Magnesium Hydrate
Encapsulated Red Phosphorus
Polypropylene
Flame Retardancy
Mechanical Properties
