氯氧镁/环氧树脂阻燃复合材料的力学性能

通过拉伸和弯曲试验,研究了氢氧化镁(MH)、氢氧化铝(ATH)对氯氧镁(MOC)/环氧树脂(EP)协同阻燃复合材料力学性能的影响.结果表明:经过硅烷偶联剂处理,当MOC和ATH的质量比为1:1时,环氧树脂的力学性能最好.     

氯氧镁复合物阻燃环氧树脂的研究

通过极限氧指数法、UL94垂直燃烧测试,研究了氯氧镁(MOC)与氢氧化镁(MH)、氢氧化铝(ATH)、碱式碳酸镁的复合物协同阻燃环氧树脂(EP)的阻燃性能.结果表明,当MOC和ATH的质量比为1:1,总质量分数为44.4%时,环氧树脂的极限氧指数(LOI)为28.3%,达到UL94 V-0阻燃等级,为四种配方中最佳组合.该阻燃剂是通过稀释、冷却、隔离、吸附等方式协同作用而阻燃.     

Preparation of Nano-SiO2 / amino-modified polysiloxane hybrid superhydrophobic coating and thermal-stability characterization

We put forward a large-area and cost-effective method to fabricate superhydrophobic coating by introducing in-situ functionalized nano-SiO2 into side-amino modified hydroxy-terminated polydimethylsiloxane(SA-HTPDMS) curing system. With the characterization using water contact angle(WCA) tester, Fourier transform infrared spectroscopy(FTIR), scanning electron microscope(SEM), atomic force microscopy(AFM) and simultaneous thermal analysis, the as-prepared coating displayed a tremendous WCA of 154.8±1°, sliding angle(SA) about 3.5° and stable self-cleaning property range from-10 to 80 ℃. It was also found that the synergistic effect of surface micro-nano hierarchical structure and chemical hydrophobicity, stability from matrix had made contributions to the superhydrophobicity and excellent heat resistance up to 300 ℃.