一种用于FDM型3D打印的改性PBT  

A Modified PBT for Fused Deposition Modeling in 3D Printing

作　　者：曹世晴 孙莉[1] 薛为岚[1] 曾作祥[1] 朱万育 

机构地区：[1]华东理工大学化工学院,上海200237 [2]上海天洋热熔胶有限公司,上海201802

出　　处：《功能高分子学报》2016年第1期75-79,共5页Journal of Functional Polymers

摘　　要：以对苯二甲酸（PTA）、间苯二甲酸（PIA）、癸二酸（SA）和1,4-丁二醇（BDO）为原料,通过直接酯化和减压缩聚的方法制备了一种适合熔融沉积打印（FDM）型3D打印的改性聚对苯二甲酸丁二醇酯（PBT）——聚对苯二甲酸间苯二甲酸癸二酸丁二醇酯（PBTIS）。采用核磁共振氢谱（1 H-NMR）、凝胶渗透色谱法（GPC）、差示扫描量热法（DSC）、黏度计和熔体仪、万能电子拉力机和冲击试验机分别研究了其热性能、流变性能和力学性能。研究表明：当n（PTA）∶n（PIA）=7∶3,SA的物质的量分数为3%~5%时,PBTIS具有合适的熔点、良好的拉伸强度和弯曲强度及悬梁缺口冲击强度等力学性能。用桌面拉丝挤出机将PBTIS样品制成卷材并用3D打印机打印,结果表明其可以流畅地打印出所设计的三维物件。Modified poly（butylene terephalate）（poly（butylene terephalate-co-isophthalate-co-sebacate）（PBTIS））were prepared for fused deposition modeling（FDM）in 3D printing by direct esterification and subsequent polycondensation using terephthalic acid（PTA）,isophthalic acid（PIA）,sebacic acid（SA）and1,4-butanediol（BDO）.The thermal,rheological and mechanical properties of PBTIS were investigated by1 H-NMR spectroscopy,Gel Permeation Chromatography（GPC）,Differential Scanning Calorimetry（DSC）,brookfield viscometer and melt indexer,electronic tensile testing machine and impact testing machine.Results showed that when n（PTA）∶n（PIA）was 7∶3and the mole fraction of SA was 3%-5%,PBTIS had good melting point and excellent mechanical properties such as tensile strength,flexural strength and notched impact strength.Then the samples of PBTIS were changed into filaments by a desktop drawing machine and printed using a 3D printer,which could be 3D printed fluently.

关 键 词：改性PBT 3D打印 力学性能 间苯二甲酸 癸二酸 

分 类 号：TQ325[化学工程—合成树脂塑料工业]