木材和木质产品由于其有趣的特性组合而被广泛用于建筑领域。消防安全和火灾蔓延,然而,对建筑物的保护至关重要。因此,在木结构中,木材必须用阻燃材料处理,以改善其对火灾的反应。本文重点介绍了应用在胶合板基材上的新型有机-无机混合无卤涂料的阻燃性。为此,要么是富含明铁矿的矿物(H5)或其改性的纳米Mg(OH)2型形式(H5-m),作为无机(纳米)填料,用反应性低聚物(RO)官能化并掺入水性聚合物基质中。水溶性聚合物(P(SSNa-co-GMAx)),结合其亲水性与环氧官能团,用作反应性低聚物以增强填料和基质之间的相容性。在各种涂料组合物中,由13%的聚合物基质组成的系统,73%H5和14%RO,这提供了最好的涂层质量和阻燃性,在一层或两层中选择更大规模的胶合板涂层。结果表明,添加了生态涂料配方(WF-13,WF-14和WF-15)的新型胶合板涂料体系,准备两层,根据EN13501-1,达到EuroclassB,这是应用于木材的消防系统的最佳选择。
Wood and wood-based products are extensively used in the building sector due to their interesting combination of properties. Fire safety and fire spread, however, are of utmost concern for the protection of buildings. Therefore, in timber structures, wood must be treated with fire-retardant materials in order to improve its reaction to fire. This article highlights the flame retardancy of novel hybrid organic-inorganic halogen-free coatings applied on plywood substrates. For this purpose, either a huntite-rich mineral (H5) or its modified nano-Mg (OH)2 type form (H5-m), acting as an inorganic (nano) filler, was functionalized with reactive oligomers (ROs) and incorporated into a waterborne polymeric matrix. A water-soluble polymer (P (SSNa-co-GMAx)), combining its hydrophilic nature with functional epoxide groups, was used as the reactive oligomer in order to enhance the compatibility between the filler and the matrix. Among various coating compositions, the system composed of 13% polymeric matrix, 73% H5 and 14% ROs, which provided the best coating quality and flame retardancy, was selected for the coating of plywood on a larger scale in one or two layers. The results indicated that the novel plywood coating systems with the addition of ecological coating formulations (WF-13, WF-14 and WF-15), prepared at two layers, reached Euroclass B according to EN13501-1, which is the best possible for fire systems applied to wood.