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以不饱和聚酯树脂为胶结料的聚合物砂浆(简称聚酯砂浆,下同),具有较好的和易性和良好的耐硝酸、氢氟酸稳定性,而且价格较低,因而国内外使用比较普遍。但是,由于聚酯树脂固化过程中物理化学变化的结果,聚酯砂浆的收缩率较大,约为环氧砂浆的5～6倍,因而内应力偏大,抗裂性能较差。在施工聚酯砂浆整体无缝面层时,或在使用过程中由于温度变化极易产生裂缝和脱层。例如,某厂电镀车间地面原设计采用聚酯砂浆整体面层,施工后不久便严重开裂、脱层。中途不得不修改设计,返工重做。因此,国内外都在围绕提高聚酯砂浆的
The polymer mortar made of unsaturated polyester resin as binder (hereinafter referred to as polyester mortar, the same below) has good workability and good stability to nitric acid and hydrofluoric acid, and the price is low, and therefore at home and abroad Use is more common. However, due to the physical and chemical changes in the curing process of the polyester resin, the shrinkage of the polyester mortar is relatively large, which is about 5 to 6 times that of the epoxy mortar, so the internal stress is large, and the crack resistance is poor. When the whole surface of the polyester mortar is seamlessly applied or during use, cracks and delamination are easily generated due to temperature changes. For example, the original design of the floor of a factory electroplating shop uses an integral layer of polyester mortar, which will be severely cracked and delaminated shortly after construction. Midway had to modify the design, rework to redo. Therefore, both at home and abroad are focusing on improving polyester mortar.