聚乳酸改性磷酸盐自硬砂试验研究  

Polylactic Acid Modified Phosphate Self-Hardening Sand Test Study

作　　者：王学明[1] 袁博[2] WANG Xue-ming;YUAN Bo(Inner Mongolia Vocational and Technical College of Transportation,Chifeng 024005,Inner Mongolia,China;Wuhan City Vocational College,Wuhan 430064,Hubei,China)

机构地区：[1]内蒙古交通职业技术学院,内蒙古赤峰024005 [2]武汉城市职业学院,湖北武汉430064

出　　处：《铸造》2023年第11期1417-1421,共5页Foundry

基　　金：武汉黄鹤英才(优秀青年人才)资助、武汉市市属高校产学研研究项目(CXY202219);湖北省教育厅科研计划项目(B2021529、B2020427、B2019433);武汉市知识创新专项曙光项目(2022010801020434);武汉城市职业学院科研创新团队建设计划资助项目(2020whcvcTD02)。

摘　　要：采用聚乳酸(PLA)对磷酸盐粘结剂进行改性,以电熔镁砂粉为固化剂,配制的自硬砂经过工艺性能测试和生产试验验证,可使用时间长达40 min,稳定性和抗吸湿性良好,且在不同的空气湿度下均表现出良好的粘结强度,溃散性也较好,能很好的适应工业生产需要。The phosphate binder was modified with polylactic acid(PLA),and the self-hardening sand prepared with fused magnesia powder as the curing agent had been verified by the process performance test and production experiment.It could be used for up to 40 min,had good stability and anti-hygroscopicity,and showed good adhesion strength and collapsibility under different air humidity,which could well meet the needs of industrial production.

关 键 词：聚乳酸 磷酸盐粘结剂 稳定性 吸湿性 溃散性 

分 类 号：TG221[金属学及工艺—铸造]