一种无机磷酸盐粘结剂干态覆膜砂的抗吸湿性试验研究  

Experimental Study on Moisture Absorption Resistance of a Dry Coated Sand of Inorganic Phosphate Binder

作　　者：夏增权 张友寿 夏露 罗圆圆 XIA Zeng-quan;ZHANG You-shou;XIA Lu;LUO Yuan-yuan(School of Materials and Chemical Engineering,Hubei University of Technology,Wuhan 430068,Hubei,China;Hubei Provincial Key Laboratory of Green Light Industrial Materials,Wuhan 430068,Hubei,China)

机构地区：[1]湖北工业大学材料与化学工程学院,湖北武汉430068 [2]绿色轻工材料湖北省重点实验室,湖北武汉430068

出　　处：《铸造》2023年第4期426-430,共5页Foundry

摘　　要：通过氧化铜、DTPA、HEDP三种材料对粘结剂复合改性,并通过正交试验确定氧化铜、DTPA、HEDP的最优配比分别为2 g、4 g、12 g,也就是得到粘结剂34B6D2C1H6,所制试样相比于基液所制试样,在相对空气湿度50%RH以内存放120 h,抗吸湿性提升46.8%。再通过在制样时添加占粘结剂比例4%的辅料(98收尘镁砂粉),在相对空气湿度60%RH以内存放6 h,试样的抗吸湿性比没加辅料时提升70.5%。In this paper,the binder was modified by the composite modification of copper oxide,DTPA and HEDP,and the optimal proportions of copper oxide,DTPA and HEDP were determined by orthogonal test to be 2 g,4 g and 12 g,respectively,that is,the binder 34B6D2C1H6 was obtained,and the sample was stored within 50%RH of relative air humidity for 120 h compared with the sample made by the base liquid,and the moisture absorption resistance was increased by 46.8%.By adding auxiliary materials accounting for 4%of the binder ratio(98 dust collection magnesia powder)during sample preparation,and storing them within 60%RH of relative air humidity for 6 h,the moisture absorption resistance of the sample is increased by 70.5%compared with that without auxiliary materials.

关 键 词：干态覆膜砂 抗吸湿性 复合改性 辅料 

分 类 号：TG142.7[一般工业技术—材料科学与工程]