丙烯酸单体对3D打印环氧丙烯酸树脂性能的影响  

Effect of Acrylic Monomer on Properties of Epoxy Acrylic Resin for 3D Printing

作　　者：王凤芝 刘秀军[1,2] 张萌 张庆印[1,2] WANG Feng-zhi;LIU Xiu-jun;ZHANG Meng;ZHANG Qing-yin(School of Chemistry and Chemical Engineering,Tianjin Polytechnic University,Tianjin 300387,China;State Key Laboratory of Hollow Fiber Membranes and Membrane Processes,Tianjin Polytechnic University,Tianjin 300387,China)

机构地区：[1]天津工业大学化学与化工学院,天津300387 [2]天津工业大学中空纤维膜材料与膜过程国家重点实验室,天津300387

出　　处：《塑料工业》2019年第10期134-138,共5页China Plastics Industry

基　　金：国家自然科学基金(21476172)

摘　　要：将不同浓度丙烯酸单体加入到双酚A环氧丙烯酸树脂中,制备了3D打印光固化材料。通过红外光谱分析、机械强度测试、扫描电镜分析,表征了树脂的双键转化率、机械强度、断面形貌。结果表明,5%丙烯酸单体的加入,树脂的双键转化率提高了58.5%,拉伸强度达到52.64 MPa,弯曲强度为168.88 MPa,弯曲模量为4449.53 MPa,分别较空白树脂提高了159.3%、49.9%、56.8%;断面更粗糙意味着树脂断裂韧性增加。树脂收缩率在丙烯酸加入量5%时最低,为6.56%,双悬臂部件打印获得的卷曲系数为7.16%,体现了树脂良好的打印精度。Three dimensional(3 D)printing resin material was prepared by adding different concentrations of acrylic monomers to the bis-phenol A epoxy acrylic photo-curing resin.In addition,the double bond conversion,mechanical strength and cross-section morphology of the resin were characterized with infrared spectroscopy,mechanical strength test and scanning electron microscopy,respectively.Furthermore,the results illustrate that the addition of 5%of acrylic monomer could improve the conversion rate of double bond to 58.5%.The tensile strength could achieve 52.64 MPa,the flexural strength is 168.88 MPa,and the flexural modulus is 4449.53 MPa,which are 159.3%,49.9%,56.8%higher than those of the pure resin matrix.Moreover,the findings in SEM demonstrat that the resin section with acrylic monomer is rough,revealing the improvement in toughness.When the addition of acrylic acid monomer is 5%,the resin shrinkage is lowest at 6.56%,and the coefficient of curl obtained by printing on the double cantilever parts is 7.16%,which reflects the excellent printing precision of the resin.

关 键 词：丙烯酸 环氧丙烯酸树脂 拉伸强度 弯曲强度 卷曲系数 收缩率 双键转化率 

分 类 号：TQ325.7[化学工程—合成树脂塑料工业]