为满足钢结构的防火要求,利用自制的含磷杂菲结构的二胺和二乙烯三胺共同固化环氧树脂乳液,制备了水性含磷环氧树脂涂料。继续添加纳米羟基草酸铝、空心陶瓷微珠、钛白粉等无机填料进行改性,通过含磷固化剂与无机填料协效阻燃环氧树脂乳液,涂料的耐火极限可达到69min,高于国家标准。所得涂料具有良好的理化性能,经耐水、耐酸碱、耐盐水、耐老化测试后,漆膜状态正常。无机填料赋予了涂料良好的隔热性能,最终涂料的隔热温差和太阳反射比分别为12.5℃和0.87。涂料制备工艺简单、施工便利、绿色环保,适用于装配式钢结构建筑的防火隔热。
In order to meet the fire protection requirements of steel structure,a new diamine with heterophenanthrene structure was used to cocure epoxy resin(EP) emulsion with diethylenetriamine,and the waterborne EP coating with phosphorus was prepared.Nano aluminum hydroxyoxalate,hollow ceramic beads,and titanium dioxide were subsequently added in,and the EP emulsion was synergistic flame-retarded by phosphorus curing agent and inorganic filler.The coating showed the ideal fire resistance limit,which was 69min.With good physical and chemical properties,the paint film was in good condition after a series of tests,such as water resistance,acid and alkali resistance,salt water resistance and aging resistance test.Good heat insulation performance of the coating was endowed by the inorganic filler.The thermal insulation temperature difference and solar reflectance ratio of the coating were 12.5℃ and 0.87 respectively.The coating had the advantages of simple preparation process,convenient construction and environmentally friendly,and suitable for the fire and heat insulation of fabricated steel structure buildings.
[1] 王娜,周美慧,李龙,等.PEPA-EG/EP复合涂料的制备及其阻燃防腐性能[J].精细化工,2019,36(6):1069-1075.
[2] 邓小波,杨森,高萍,等.钢结构防火涂料的研究现状、应用、发展方向及防火性能检测方法的研究[J].化工新型材料,2010,38(9):57-60.
[3] 罗荡荡,梁光明.钢结构防火涂料的现状与发展综述.广州化工,2017,45(13):8-10.
[4] 张仁忠,但建明,洪成林,等.新型水性无机膨胀体系钢结构防火涂料的研制[J].化工新型材料,2016,44(7):240-242.
[5] 邱勇,钱立军.一种基于磷杂菲和三嗪基团的无卤阻燃剂的制备及表征[J].化工新型材料,2013,41(8):75-77.
[6] Xu X Q,Wu Y M,Wang C S.Synthesis of DOPO-based spiroorthocarbonate and its application in epoxy resin[J].Designed Monomers and Polymers,2015,18(7):690-697.
[7] 罗兰,王澍,王健,等.保温隔热建筑涂料的研究进展[J].化工新型材料,2017,45(11):33-36.
[8] 陈荣华,向波,瞿金清.新型有机/无机反射型隔热建筑涂料的研制[J].中国涂料,2017,32(1):32-35.
[9] Liu Y L.Epoxy resins from novel monomers with a bis-(9,10-dihydro-9-oxa-10-oxide-10-phosphaphenanthrene-10-yl-)substituent[J].Journal of Polymer Science:Part A:Polymer Chemistry,2002,40:359-368.
[10] 惠云珍,吴璧耀.水性环氧树脂乳液的合成及性能研究[J].粘接,2007,29(2):14-18.
[11] 王小建,王汝敏,杨建华.新型含磷环氧树脂的合成及性能研究[J].热固性树脂,2009,24(1):27-30.
[12] Lin C H,Hwang T Y,Taso Y R,et al.Phosphorus-containing epoxy curing agents via imine linkage[J].Macromolecular Chemistry and Physics,2007,208(24):2628-2641.
[13] 常志宏.纳米羟基草酸铝的表面改性及其在电缆料中的阻燃应用研究[D].北京:北京化工大学,2007.
[14] 黄宝晟,李峰,张慧.纳米双羟基复合金属氧化物的阻燃性能[J].应用化学,2002,19(1):71-75.
[15] 王锦成.膨胀型防火涂料的阻燃机理及其研究进展[J].化工新型材料,2005,33(10):21-24.
[16] 李少香,陈希磊.空心微珠对膨胀型涂料防火性能的影响[J].中国涂料,2014,29(8):55-57,69.
[17] 扈中武,王华进,谷晓昱.二氧化钛对硅丙乳液防火涂料阻燃抑烟性能的影响[J].涂料工业,2013,43(7):38-42.
[18] 赵肖春.隔热保温涂料的特点、制备和应用技术[J].材料科学与工程学报,2003,21(3):428-429.
[19] 陆洪彬,冯春霞,李文丹,等.TiO2修饰空心玻璃微珠隔热涂料的制备及其性能表征[J].化工新型材料,2010,38(8):81-83,96.
[20] 侯志全,赵军明,何勃,等.隔热保温材料的研究进展[J].广东化工,2018,7(45):163,171.
