一种水性室内膨胀型钢结构防火涂料的制备

以水性醋酸乙烯酯乳液为主要成膜物质,以聚磷酸铵(APP)、季戊四醇(PER)和三聚氰胺(MEL)作为三元膨胀阻燃体系,制备了具有较强的防火性能及低VOC的水性室内膨胀性钢结构防火涂料.讨论了水性醋酸乙烯酯乳液的选择、三元膨胀阻燃体系的配比、填料的选择.结果表明,两种乳液以1:1复配,w(APP):w(PER):w(ME...     

钢结构水性膨胀型防火涂料性能优化方法

通过纳米技术、微胶囊包覆技术介绍了水性膨胀型防火涂料防火性能和耐水性能的提升方法,采用物理和化学相结合的角度对涂层的耐腐蚀性能进行针对性分析,就钢结构水性膨胀型防火涂料抑烟性能和力学性能的作用机理论述了高强度、高膨胀且致密炭层的生成策略,着重提出了多功能一体化涂料是未来钢结构水性膨胀型防火涂料研究、开发和应用的发展方向。     

水性防火涂料的发展现状

介绍了水性防火涂料的组成和阻燃机理。阐述了水性防火涂料的现状,存在问题及其改进方法。     

水性膨胀型钢结构防火涂料的制备及性能研究

以醋酸乙烯、叔碳酸乙烯酯聚合而成的混合液为基体,采用物理膨胀和化学膨胀相结合的阻燃膨胀体系,可膨胀石墨（EG）为物理膨胀体系,水性阻燃剂为化学膨胀体系,来制备水性膨胀型钢结构防火涂料。探究了乳液与阻燃剂之间的配比、EG的添加量对水性防火涂料防火性能的影响。结果表明,当乳液含量在20%（质量分数,后同）、阻燃剂含量在40%、EG含量在1.5%时,制备的水性膨胀型防火涂料涂层受热后膨胀效果显著,强度高,附着力好,耐火极限为63min,满足GB14907—2018对钢结构的防火要求。     

FSF-1水性膨胀型防火涂料

推出FSF-1水性膨胀型防火涂料的防火性好且无毒,兼有防火和装饰作用。该涂料是由改性氨基树脂/丙烯酸共聚物和聚醋酸乙烯乳液复合基料,以及复合磷酸盐膨胀催化剂等配制而成。介绍了该涂料的制法,并列举了涂料一般性能和防火性能,以及毒性分析结果。     

水性防火涂料的发展别犬

介绍了水性防火涂料的组成和阻燃机理。阐述了水性防火涂料的现状,存在问题及其改遗方法,     

钢结构用水性膨胀型防火涂料的制备及性能研究

以高岭土及含锆陶瓷纤维作为增强填料,聚醋酸乙烯酯乳胶和醋叔乳胶的混合液为基料,多聚磷酸铵(APP)、三聚氰胺(MEL)、季戊四醇(PER)为膨胀阻燃体系,开发了一种燃烧后具有高强度膨胀炭层的水性膨胀型防火涂料.研究了乳胶类型、膨胀阻燃体系各组分配比、颜基比、高岭土及含锆陶瓷纤维对水性膨胀型防火涂料性能及炭层强度的影响....     

膨胀型水性防火涂料的研究

介绍了膨胀型水性防火涂料所用黏合剂乳液的合成工艺,以及涂料的制备过程与性能特点。     

水性膨胀型防火涂料的研制

采用聚有机硅氧烷乳液、自交联丙烯酸酯乳液和水溶性三聚氰胺甲醛树脂作为成膜剂,配合P—C—N膨胀阻燃体系,以聚磷酸铵（APP）为脱水催化剂、双季戊四醇（DPER）为碳化剂、三聚氰胺（MEL）为发泡剂,制备了一种水性膨胀型防火涂料。介绍了水性膨胀型防火涂料的阻燃性能、机械性能等。     

钢结构用水性膨胀型防火涂料的研究进展

水性膨胀型防火涂料是一种绿色环保的新型防火涂料,遇到火灾时可以形成厚度数倍于原始涂层的膨胀炭层,阻止热量向基材传导,提高钢结构的耐火极限,具有施工简便、装饰性好、易于检查和维护等优点.本文介绍了国内外钢结构防火涂料的研究进展,着重对水性膨胀型防火涂料的防火机理及成膜物、阻燃体系和颜填料在涂料中的作用进行了论述,指出生产...     

Effects of inorganic fillers on the performance of the water-based intumescent fire-retardant coating

The purpose of this research was to evaluate the influences of filler type and its content on the performance of a water-based intumescent fire-retardant coating. Three fillers (vermiculite, celite, and aluminum hydroxide) were added to the intumescent paint formulation. The thermal and fire protective properties were studied with thermogravimetric analysis (TGA), torch test, electrical furnace, scanning electron microscopy (SEM), and Fourier transform infrared analysis (FTIR). The results showed that adding fillers into coatings up to 3% could improve the intumescent coating's behavior and increase its endurance against flames. Of the three fillers used, vermiculite showed a better performance in the torch test, attributed to its chemical and physical structure. Vermiculite has low thermal conductivity and is considered an appropriate filler for heat-insulation. The final back-plate temperatures in the torch test for the vermiculite-containing samples were around 100°C–150°C lower than that of other samples. Moreover, vermiculite's addition improved the coating's expansion by 10% compared with the control sample's. The vermiculite sample's char layer morphology showed a uniform cell size distribution, indicating structural robustness. The coating samples successfully transformed polypropylene flammability from highly flammable to V0 level in the UL 94 vertical burning test standard. The results showed that vermiculite could improve intumescent paint's fire resistance and be used as an enhancer in intumescent coating formulations.     

室外用超薄钢结构防火涂料的研制

以小板燃烧法为评价方法,考察了不同树脂体系、P-C-N阻燃体系、防火颜填料等因素对涂层防火性能的影响规律.通过配方优化以及与自制防火面漆相复合,获得了综合性能佳的室外用超薄型钢结构防火涂料.该产品已通过了国家检验中心的检测,当涂层厚度为1.5mm时,防火时间达96min.     

Influences of glass flakes on fire protection and water resistance of waterborne intumescent fire resistive coating for steel structure

Glass flake (GF) was used as a modifier to improve the fire protection and water resistance of waterborne intumescent fire resistive coating. The influences of GF on the properties of the coatings were investigated in detail by using TGA, XRD, X-ray fluorescence spectrometry (XRF), SEM and fire protection test. The TGA results proved that addition of GF could enhance the anti-oxidation of the char layers and increase the residue weights of the coatings. The XRF results indicated that anti-oxidation of the coatings modified by GF was improved. The SEM images demonstrated that addition of GF could improve the foam structure of the coatings. After immersed in water over 600 h, the results showed that the thermal stability and fire protection of the coating without GF were significant decreased, but the coatings modified by GF could still maintain the excellent intumescent effect and fire protection.     

YAMAL海洋平台钢结构防火涂料的涂装施工

介绍了YAMAL海洋平台钢结构防火涂层配套方案和威华(WIWA)DUOMIX 333 PFP型防火涂料喷涂机的工作原理。详细讨论了喷漆前钢结构的表面处理工艺(包括喷砂前表面缺陷处理方法,油脂、污泥、记号和无机盐的去除,打磨与喷砂处理等)以及底漆和防火涂料喷涂工艺,为海洋平台钢结构防火涂料涂装工程实践提供参考。     

纳米氢氧化铝在膨胀型钢结构防火涂料中的应用研究

选用新型纳米氢氧化铝阻燃材料,应用于超薄膨胀型钢结构防火涂料中对其防火性能和防腐性能的影响进行了研究,通过采用小室燃烧试验法、产烟试验、耐腐蚀性试验、电子显微镜等的实验检测和分析结果为依据,指出使用纳米氢氧化铝阻燃材料是进一步提高防火涂料性能和防腐蚀性能的途径之一。提出了纳米氢氧化铝阻燃材料的最佳加入量在6%时,防火涂料既有很好的防火性能和理化性能,又有优良的防腐蚀性能。以期能对今后研制高性能的超薄型钢结构防火涂料提供有价值的参考。     

Influences of silicone emulsion on fire protection of waterborne intumescent fire-resistive coating

The combination of self-crosslinking polyacrylate emulsion and silicone emulsion was used as a binder for the preparation of waterborne intumescent fire-resistive coatings. The influences of silicone emulsion on fire protection and char formation of the coatings were investigated in detail by means of TGA, SEM, energy dispersive spectroscopy analysis, rheological measurement, and fire protection tests. The results showed that using silicone emulsion improved thermal stability and antioxidation ability of the coating and increased the residue weights of the char layer at high temperature. Furthermore, an appropriate amount of silicone emulsion could improve the rheological property of the mixed binders and be conducive to the increase of the intumescent factor of the coatings, thus improving the fire protection of the coating significantly. However, an excess amount of silicone emulsion can lead to uneven dispersion of silicone emulsion in the mixed binder and cause an uneven distribution of cell size of the char layer.     

阻燃抑烟剂对膨胀型防火涂层燃烧特性的影响

采用三氧化钼、钼酸铵、三氧化二锑、可膨胀石墨和硼酸锌作阻燃抑烟剂,分别按3种比例(5%、10%和15%)与膨胀阻燃体系(IFR)复配,制得水性膨胀型防火涂料。通过锥形量热仪研究了阻燃抑烟剂种类和用量对涂层燃烧性能的影响,并考察了其与IFR的协同性。结果表明,涂层生烟主要发生在着火之前,即烟气主要是裂解产物。三氧化钼或钼酸铵配合IFR会延迟点燃时间,与IFR质量比大于1∶1时可降低烟释放速率峰值(PSPR)。三氧化二锑或硼酸锌都不能降低热释放速率峰值(PHRR),且引入三氧化二锑还会明显增加PSPR。可膨胀石墨与IFR配比大于2∶3时,降低PHRR和PSPR的效果最好。这5种阻燃抑烟剂都能延迟热释放峰值时间和生烟速率峰值时间,其中硼酸锌的作用最明显。     

Effects of expandable graphite on char morphology and pyrolysis of epoxy based intumescent fire-retardant coating

The current study was designed to investigate the effects of expandable graphite (EG) on fire protection properties of intumescent fire-retardant coating for steel structures. Several formulations of intumescent coating were prepared and tested according to ISO 834 for char expansion. The chars were found without cracks and bonded with the steel substrate. The results showed that the coating slowly degraded during the test and char remained in contact with vertically tested coated substrate. The coated substrates were also tested for weather resistance using humid and ultraviolet environment. The char was characterized by using FESEM, XRD, FTIR, TGA, and XPS analysis. FESEM examined char morphology of the coatings after furnace fire test. XRD and FTIR showed the presence of graphite, borophosphate; boron oxide and sassolite in the char. TGA and DTGA results disclosed that EG improved the residual mass of coating. XPS analysis showed the percentages of carbon and oxygen are 48.50 and 43.45 in char of formulation with 12.8% EG. The results of weathering test coatings showed decreased in char expansion because of a humidity and UV light. The formulation with 9.8% EG showed the maximum char expansion and high residual mass among the formulations investigated in this study. The weathering tested coated samples showed their capability of fire protection.     

Corrosion performance of waterborne coatings for structural steel

Among recently developed waterborne coatings, epoxy and acrylic based coatings have a special place. To study this kind of anticorrosive coatings, use is normally made of natural exposure and laboratory tests. The literature has recently reported that the salt spray test is not suitable for selecting/studying anticorrosive waterborne coatings. In this paper, the authors present the main results obtained in an experimental study involving laboratory tests and natural exposure in two atmospheric test sites of different corrosivity categories. The natural exposure and accelerated tests are complemented by other measurements in the laboratory, involving water uptake, adhesion and electrochemical measurements, to understand the anticorrosive performance of the paint systems under study. As accelerated tests, salt spray and prohesion were used. Indirect measurements of adhesion were made using cross-cut and pull-off tests. Electrochemical impedance spectroscopy (EIS) and noise (EN) were used for electrochemical characterization. The study concludes that the best anticorrosive behaviour was shown by epoxy-polyamide paint systems, including zinc-rich primers. The correlation between the results of salt spray and natural exposure in marine test sites was significantly better than that obtained using the prohesion test. The electrochemical results showed that it is very important to pay special attention when interpreting this kind of results.