Improve the humidity resistance of sodium silicate sands by ester-microwave composite hardening
Improve the humidity resistance of sodium silicate sands by ester-microwave composite hardening
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发表时间：
2014-10
期刊：
影响因子：
0.6
通讯作者：
Wan Huafang;Gong Wenbang;Luo Jijun
中科院分区：
文献类型：
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作者：
Wan Huafang;Gong Wenbang;Luo Jijun
W. Huafang，G.文邦湖水玻璃砂的一种简易硬化方法--酯-微波复合硬化法，可降低砂型吸湿量，降低对砂型材料的要求。水玻璃砂经少量酯硬化后脱模，无模砂经微波硬化。结果表明，当酯的加入量为wt. %时，复合硬化体的4 h储存强度比普通硬化体提高了29.4%。1.5%，以硅酸钠粘合剂的重量计。通过酯交换法制备憎水材料、甘油和三水醋酸钠，提高了水玻璃砂的耐湿性。
W. Huafang, G. Wenbang, L. Jijun, Wuhan Textile University, Wuhan, China An easy hardening method of sodium silicate sands, ester-microwave composite hardening, could decrease the sands mould absorbing moisture and the mould materials requirement. And it was performed by hardening the sodium silicate sands with a little ester, and then demoulding, finally hardening the non-mold sands with microwave energy. The results showed that the 4h storage strength of composite hardening increases by 29,4 % compared with the common one, when the addition amount of ester was wt. 1,5 % according to the weight of sodium silicate binder. The humidity resistance of the sodium silicate sands was improved after the production of hydrophobic materials, glycerol and sodium acetate trihydrate by the ester.