羧基丙烯酸树脂3D打印粉末材料的制备及分析

Preparation and analysis of carboxyl acrylic resin as prototyping powder for three dimensional printing

以甲基丙烯酸(MAA)、甲基丙烯酸甲酯(MMA)以及丙烯酸丁酯(BA)为原料,通过溶液聚合法制备羧基丙烯酸树脂,再以其作为3D打印粉末材料,并以稀碱溶液作为粘接溶液,经3D打印制备实体成品。分别考察了MAA用量、树脂相对分子质量以及粉末材料配方对3D打印成品性能的影响规律,确定了树脂最优合成工艺与粉末材最优配比。最优条件下,3D打印成品的弯曲强度为9.4MPa、抗压强度为26.7MPa,满足不同的应用需求。

The carboxyl acrylic resin used as prototyping powder for three dimensional printing（3 DP）was copolymerized by solution polymerization from MAA,MMA and BA.Afterwards 3 DP production was prepared from prototyping powder and dilute alkali used as adhesive solution.The effects of MAA dosage,the molecular weight of resultant resin and formula of prototyping powder on the properties of 3 DP production were investigated separately,and the optimum synthetic conditions and the optimum ratio of prototyping powder were determined.The flexural strength and compressive strength of optimum 3 DP production were 10.2 MPa and 27.7 MPa respectively,which met application requirement under some different occasions.