摘要
以季戊四醇磷酸酯(PEPA)与可膨胀石墨(EG)作为复合填料,添加到水性环氧树脂(EP)中制备出PEPA-EG/EP复合涂料。通过耐火极限分析、热失重分析、极限氧指数测试、垂直燃烧测试、残炭扫描电镜分析、残炭红外分析、电化学实验和附着力实验,考察了不同质量配比的复合填料对PEPA-EG/EP复合涂料阻燃性能和防腐性能的影响。结果表明:当复合填料与水性环氧树脂的质量比为15∶100时,涂料具有最佳的阻燃性能和防腐性能,其钢片背温达到500℃的时间是38 min,极限氧指数达到27.2%,垂直燃烧等级达到V-1级,800℃时残炭量为27.79%,并且在480 h的电化学测试中,其阻抗值达到最大,为9.24×10~6Ω×cm^2。
Pentaerythritol phosphate (PEPA) and expandable graphite (EG) as composite fillers were added into waterborne epoxy resin (EP) to prepare PEPA-EG/EP composite coatings. The effect of mass ratio of composite filler on the flame retardancy and corrosion resistance of PEPA-EG/EP composite coating was investigated by fire resistance limit analysis, thermogravimetric analysis, limiting oxygen index test, vertical burning test, residual carbon scanning electron microscopy, residual carbon infrared analysis, electrochemical impedance spectroscopy and adhesion experiment. The results show that when the mass ratio of composite filler to waterborne epoxy resin is 15 : 100, the prepared composite coating has the best flame retardant properties and corrosion resistance. The time when the back temperature of steel sheet reaches 500 °C is 38 min, the limiting oxygen index is 27.2%, the vertical combustion performance reaches V -l level, the residual carbon amount increases to 27.79% at 800℃, and the composite coating has the highest impedance value (9.24x 10^6 Ω·cm2) during electrochemical impedance spectroscopy testing after 480 hours of immersing.
作者
王娜
周美慧
李龙
张静
WANG Na;ZHOU Mei-hui;LI Long;ZHANG Jing(Advanced Manufacturing Institute of Polymer Industry (AMIPI),Shenyang University of Chemical Technology, Shenyang 110142, Liaoning, China;Sino-Spanish Advanced Materials Institute, Shenyang University of Chemical Technology,Shenyang 110142,Liaoning,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2019年第6期1069-1075,共7页
Fine Chemicals
基金
辽财指高端人才([2016]864)
辽宁省高校创新人才计划([2017]053)~~
关键词
可膨胀石墨
季戊四醇磷酸酯
水性环氧树脂
阻燃
防腐
expandable graphite
pentaerythritol phosphate
waterborne epoxy resin
flame retardant
anticorrosion
