无机磷酸盐干态覆膜砂用粘结剂的改性研究  

Study on Modification of Binder for Inorganic Phosphate Dry Precoated Sand

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》2022年第9期1111-1115,共5页Foundry

摘　　要：采用二氧化硅对无机磷酸盐干态覆膜砂用粘结剂进行改性。结果表明,亲水性纳米二氧化硅(一种由KH570改性的商用材料)改性粘结剂对砂型强度以及表面质量有明显的提高。亲水性纳米二氧化硅加入量的适用范围为占粘结剂的0.1%~8.25%,加入占粘结剂的0.3%亲水性纳米二氧化硅时,砂型强度及表面质量提升最多。Silica was used to modify the binder for inorganic phosphate dry precoated sand. The results show that the hydrophilic nano silica(a commercial material modified by KH570) modified binder can significantly improve the sand mold strength and surface quality. The application range of the amount of the hydrophilic nano silica is 0.1%-8.25% of the binder. When adding hydrophilic nano silica accounting for 0.3% of the binder, the strength of the sand mold and surface quality are increased the most.

关 键 词：亲水性纳米二氧化硅 干态覆膜砂 强度 表面质量 

分 类 号：TG221[金属学及工艺—铸造]