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随着我国化工、冶金、化纤、石油等工业的发展,对耐腐蚀材料提出了一系列新要求。其中对30～50%热沸腾硫酸,98%硫酸,热沸腾醋酸、维纶的醛化浴溶液以及酸碱交替下使用的腐蚀问题,国内迄今尚难解决。酚改性二甲苯—甲醛树脂有优良的耐腐蚀性能,原料丰富,工艺及设备简单,价格便宜,成本低,应用于生产上述强腐蚀介质使用的玻璃钢管道、管件、阀门、泵和反
With the development of China’s chemical industry, metallurgy, chemical fiber, petroleum and other industries, a series of new requirements have been put forward on the corrosion-resistant materials. Among them, 30-50% hot boiling sulfuric acid, 98% sulfuric acid, hot boiling acetic acid, vinylidene chloride bath solution and acid-base alternating corrosion problems have been hitherto difficult to solve. Phenol-modified xylene-formaldehyde resin has excellent corrosion resistance, rich raw materials, process and equipment is simple, cheap, low cost, used in the production of the corrosive media used in the glass pipe, fittings, valves, pumps and anti