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Optimization of a new animal glue binder system cured by CO_2 for use in foundry

查看全文 作　　者：Liu [1]Weihua;Zhang [1]Yilin;Li [1]Yingmin;Liu [2]Xiuling 高影响力作者 机构地区：[1]School of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110023,China;[2]Shenyang Research Institute of Foundry,Shenyang 110022,China高影响力机构 出　　处：《China Foundry》索引2012年第9卷第4期,共4页高影响力期刊 基　　金：financially supported by the National Natural Science Foundation of China(Grant No.51275313) 摘　　要：A new sand binder system cured by CO2 was prepared based on the animal bone glue.To overcome the disadvantages of animal glue such as agglomeration at room temperature,high energy consumption and low efficiency,an alkaline decomposition process was selected,and certain modifier was used to modify the performance of the animal glue binder.For the alkaline decomposition,NaOH was used as the catalyst with an addition of 4wt.% to the animal glue.A modifier was determined through the orthogonal experiment with a weight ratio of glycerin:glycol:dextrin:animal glue = 9:16:15:100,and the optimal modification reaction should be performed at 75 ℃ with a reaction time of 90 min.Ca(OH)2 was used as a promoter;the optimal CO2 gas flux blowing into the sand was 0.7 m3.h-1 for a duration of 60s under the experimental conditions.Results show that an original strength above 0.7 MPa and a final strength about 4.2 MPa can be achieved,which could meet the requirement of rapid moulding and core-making for foundry.The new binder was characterized and analyzed by means of IR,and the modification and CO2-cured mechanisms of this animal glue binder were also discussed. 关 键 词：金属材料 球墨铸铁 合金材料 组织结构
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