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四川省建工局建筑科学研究所和成都市废旧物资回收公司橡胶厂研究小组,于1972年10月,初步研制成再生橡胶——沥青防水涂料。在同年12月试用于小面积的屋面工程,经过一年试用观察,涂膜完整,含有弹性,无明显老化迹象,一般情况良好。1973年又在陕西汉中和四川成都采用了约三千多平米的再生橡胶——沥青防水涂料屋面,以考察不同地区的试用效果。从试验和试用的结果表明,这种涂料性能较好,还可用用于防腐、防潮等工程;涂料成本不高(每公斤1.2元),原料来源较广,是一种值得发展的新的防水材料。一、原理再生橡胶——沥青防水涂料,是以石油沥青和废橡胶为主要原料,经过一系列加工而成。废橡胶经过冉生,能恢复可塑性,虽然再生胶的延伸率和扯断强度比原胶有所降低,
Sichuan Research Institute of Building and Construction Engineering and the Chengdu Rubber Research Group of Waste Materials Recycling Co., Ltd., in October 1972, initially developed a recycled rubber-tar waterproof coating. In December of the same year, the project was applied to a small-scale roof project. After one year trial observation, the coating film was complete, elastic, and no signs of aging. The general situation was good. In 1973, about 3,000 square meters of reclaimed rubber, bituminous waterproof coating roofs, were used in Hanzhong, Shaanxi, and Chengdu, Sichuan, to examine the trial results in different regions. The results from tests and trials have shown that this paint has good performance and can be used for anti-corrosion and moisture-proof projects; the paint cost is not high (1.2 yuan per kilogram), and the source of raw materials is wider. It is a new waterproof that is worth developing. material. First, the principle of recycled rubber - bituminous waterproof coating, is based on petroleum asphalt and waste rubber as the main raw material, after a series of processing. After the waste rubber is cured, plasticity can be restored, although the elongation and tear strength of reclaimed rubber are lower than that of the original rubber.