建筑粉尘抑制剂的制备及其应用

Preparation and application of carboxymethyl cellulose grafting on BA/MMA dust suppressant

以羧甲基纤维素、丙烯酸丁酯、甲基丙烯酸甲酯为原料,用溶液聚合法合成出一种具有黏结、润湿性能的成膜抑尘剂。经傅里叶红外光谱、X-射线衍射仪对制备的产物进行了结构表征。通过与市售黏结型抑尘剂进行比较,并对其润湿性、保水性、耐风蚀性、温度适应性进行测试。结果表明:合成的抑尘剂性能优于市售产品,当合成抑尘剂质量分数为3%时,黏度为16.70 m Pa·s,粉尘渗透深度达3.4 cm,含水率为9.5%。在15 m/s的风力作用下,6 h后粉尘损失率仅为1.5%,-20~40℃变温条件下粉尘固结层完整无裂痕。

A kind of dust suppressant with good film-formation,adhesive and wetting properties is synthesized by solution polymerization of carboxymethyl cellulose,butyl acrylate and methyl methacrylate. The chemical structure and morphology of the obtained product are characterized by FT-IR spectroscopy,scanning electron microscopy（ SEM） and Xray diffraction analysis（ XRD）. The wettability,water retention,wind erosion resistance and temperature adaptability of the binder are also tested. The results show that the synthetic dust suppressant has better performance than commercial products. The viscosity,depth of penetration andmoisture content are16. 70 m Pa·s,3. 43 cm and 9. 5%,respectively.When the wind speed is 15 m / s,the dust loss rate is only 1. 5% after 6 h,and the dust consolidation layer of dust surface is complete at the temperature of 20- 40℃.