摘要
通过异丙醇铝水解制备了高耐水性、高阻燃性的复合氢氧化铝-季戊四醇(ATH-PER),考察了水解温度、反应时间对复合产物溶解度和高温残重率的影响,利用扫描电子显微镜(SEM)、能谱仪(EDS)和综合热分析仪(TG)对样品的微观形貌、表面元素组成以及热分解行为的变化情况进行探究,并对复合ATH-PER在膨胀型防火涂料中的应用进行了研究。结果表明,制备复合ATH-PER的最佳水解温度为70℃,反应时间为2 h。ATH-PER在20℃下溶解度为1.946 g/(100 mL水),较无包覆PER降低74.8%;高温残重率提升至44.69%。复合后ATH-PER表面粗糙,出现质量分数为5.52%的Al元素,C、O元素质量分数降低。将ATH-PER应用于膨胀型防火涂料中,浸水24 h后涂料炭层膨胀倍率为7.88,为改性前的368.2%,具有更加优异的耐水及耐火性能。
Through the hydrolysis of aluminum isopropoxide,compound aluminum hydroxide-pentaerythritol（ATHPER） with high water resistance and high flame retardancy is prepared.The effects of hydrolysis temperature and reaction time on the solubility and high temperature residual weight of compound products are studied. Scanning electron microscopy（SEM）,energy dispersive spectrometer（EDS） and thermal gravimetric analyzer（TG） are used to explore the changes of microstructure,surface element composition and thermal decomposition behavior of samples. And the application of compound ATH-PER in the intumescent fire-retardant coatings are also studied. The results show that the optimum hydrolysis temperature and reaction time are 70℃ and 2 h,respectively for the prepared compound ATH-PER.The solubility of ATH-PER is 1. 946 g/100 mL water at 20℃,which is 74. 8% lower than that of uncoated PER,and the rate of high temperature residual weight is raised to 44. 69%. After compounding,ATH-PER exhibits a rough surface on which 5. 52 wt% Al element appears and the concentrations of carbon and oxygen drop. As ATH-PER is applied into intumescent fire-retardant coatings,the expansion ratio of carbon layer in coatings after soaking for 24 h is 7. 88,which is368. 2% higher than before compounding,showing excellent water resistance and fire resistance.
作者
刘婷婷
乔建江
LIU Ting-ting;QIAO Jian-jiang(School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China)
出处
《现代化工》
CAS
CSCD
北大核心
2018年第9期155-159,共5页
Modern Chemical Industry
