塑料科技2024，Vol.52Issue(9)：45-50,6.DOI:10.15925/j.cnki.issn1005-3360.2024.09.008
PEG功能化及其在粉末注射成型17-4PH不锈钢中的应用
Functionalization of PEG and Its Application in Powder Injection Molding of 17-4PH Stainless Steels
摘要
Abstract
The α-methacrylic acid(MA),glycidyl methacrylate(GMA),butyl acrylate(BA)were selected as monomers to graft polyethylene glycol(PEG)and forming functionalized products(PEG-X),and the 17-4PH stainless steel powder was wet deal with PEG-X.Then,the injection molding feedstock was prepared via combining 17-4PH stainless steel powder dealt by PEG-X functionalized products and polyformaldehyde/polypropylene/high density polyethylene(POM/PP/HDPE).Finally,17-4PH sintered samples were obtained by injection,degreasing and sintering.The effects of PEG-X functionalized products on 17-4PH stainless steel powder injection molding feedstock and sintered samples were discussed.The results showed that the compatibility between binder and 17-4PH stainless steel powder was improved and corresponding surface tension was decreased,then the wettability between binder and 17-4PH was improved.Finally,the 17-4PH stainless steel powder modified by PEG-BA sample presents the best compatibility,whose contact angle with POM decreased from 116° to 55°.The rheological properties of the feedstock and the mechanical properties of injected green-sample were improved simultaneously.The grain size of the sintered sample dealt with PEG-X was refined and the corresponding mechanical properties were improved.The tensile strength of the PEG-MA powder sintered sample was increased from 768 MPa to 982 MPa,and the elongation at break of the PEG-GMA powder sintered sample was increased from 10.25%to 15.90%.关键词
金属粉末注射成型/17-4PH不锈钢/接枝/表面改性/力学性能Key words
Metal powder injection molding/17-4PH stainless steel/Graft/Surface modification/Mechanical properties分类
化学化工引用本文复制引用
李晓芙,吴盾,曹峥,成骏峰,王东,刘春林..PEG功能化及其在粉末注射成型17-4PH不锈钢中的应用[J].塑料科技,2024,52(9):45-50,6.基金项目
江苏省研究生实践创新计划项目(SJCX23-1473) （SJCX23-1473）
