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近年来,砼脱模剂正作为一种专用产品在我国开始兴起。但由于多年来采用废机油或其它代用品作为砼的脱模材料,在一定程度上影响了砼制品的质量和建筑构件行业的工艺改造与发展。目前,国内使用的砼脱模剂种类繁多,可归纳为:海藻酸钠型、乳化机油型、石蜡型以及水溶性有机硅系等,此外,还有土法制作的倒皂脚、石灰水等。海藻酸钠型由于原料价格贵,且此类脱模剂碱性大,防腐要求高而难以推广与应用。水溶性有机硅系使每m～2模板费用增加0.06～0.08元,为脱模剂中增加费用最高的一种脱模剂。因此,在价格竞争中处于不利地位。乳化机油型和石蜡改性型这两种脱模剂,由于脱模效果好、成本低廉而受到用户的青睐。
In recent years, niobium release agents are beginning to emerge as a special product in our country. However, due to the use of waste oil or other substitutes as a mold release material for many years, it has affected the quality of concrete products and the process transformation and development of the building components industry to some extent. At present, there are many types of helium mold release agents used in the country, which can be summarized as: sodium alginate type, emulsified oil type, paraffin type, and water-soluble silicone series. In addition, there are also soaps, limes, etc. . Sodium alginate type is difficult to popularize and apply due to the high cost of raw materials and the large alkalinity of such mold release agents. The water-soluble silicone system increases the cost per m to 2 template by 0.06 to 0.08 yuan, which is the most costly release agent for the release agent. Therefore, it is at a disadvantage in price competition. Emulsion oil type and paraffin modified type mold release agents are favored by users because of their good demoulding effect and low cost.