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建筑防水是建筑工程中投诉最多的问题之一,然而众多中高性能的防水材料又使施工单位和用户目不暇接,特别对建筑节能工程,保温材料与防水材料的相互适应性是一个新的问题。一种集防水保温为一体的材料——硬质聚氨酯防水保温系列产品,已由烟台同化防水材料厂研制成功,并在北京等地应用20余万平方米,防水保温隔热效果突出。 一、硬质聚氨酯泡沫防水保温隔热机理 1.硬质聚氨酯泡沫(简称PU)由异氰酸酯和多元醇为基本原料,聚合而成的结构细密的微孔泡沫体,汽孔内填充着导热系数很低的发泡剂F11,其蒸气导热系数为0.07W/m·K。PU硬泡的导热系数值50％～70％是由充填气体的导热系数来决定,容重为
Building waterproofing is one of the most complaints in construction projects. However, many high-performance waterproof materials make construction units and users inaccessible. In particular, the compatibility of building energy-saving projects, insulation materials and waterproof materials is a new problem. A set of waterproof and heat-insulating materials, namely rigid polyurethane waterproof and heat-insulating products, have been successfully developed by Yantai Tonghua Waterproof Material Factory, and applied in Beijing and other places with more than 200,000 square meters. The waterproof, heat-insulating and heat-insulating effect is outstanding. First, the rigid polyurethane foam waterproof thermal insulation mechanism 1. Hard polyurethane foam (abbreviated as PU) isocyanate and polyol as the basic raw material, the polymerization of fine-structured microporous foam, filled with thermal conductivity in the hole is very The low blowing agent F11 has a vapor thermal conductivity of 0.07 W/m·K. The thermal conductivity value of PU rigid foam is from 50% to 70%, which is determined by the thermal conductivity of filling gas. The bulk density is