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制造防水卷材时在浸有低融点沥青纸板的外面再涂盖一层高融点沥青,作为保护层.它的作用是防止内部油份蒸发延长防水性能.但高融点沥青在性质上有些先天的缺陷,如感温系数较大,对湿度感应性强,遇热易淌,遇冷易脆;可塑性小,柔韧性不够,因之制成防水卷材后,不能达到要求.为了增加涂盖层的柔度与降低它的感温性,我们在高融点沥青内加入些填充料.简单的讲,就是使沥青分子与分子之间增加摩擦力,因而降低感温性和加强可塑性,提高防水卷材的耐热性.天热时不致粘残,天冷时不致折裂,同时也减少加热损失,延长卷材使用效能. 有人怀疑填充料的办法,不
In the manufacture of waterproofing membranes, a layer of high-melting bitumen is used as a protective layer on the outside of the immersed low-melting-point asphalt paperboard. Its role is to prevent the internal oil from evaporating and prolong the waterproof performance. However, the high-melting-point asphalt is inherently intrinsic in nature. Defects, such as a large temperature coefficient, strong sensitivity to humidity, easy to encounter heat, cold and brittle; plasticity is small, flexibility is not enough, because it made of waterproof membrane, can not meet the requirements. In order to increase the coating With its softness and low temperature sensitivity, we add some filler to the high-melt point asphalt. Simply put, it is to increase the friction between the asphalt molecules and the molecules, thus reducing the temperature sensitivity and enhancing the plasticity, and improving the waterproof volume. The heat resistance of the material. It won’t stick when it’s hot, it won’t crack when it’s cold, it also reduces the heating loss and prolongs the coil’s use efficiency. Someone doubts the way of stuffing, not