摘要
针对光敏树脂经 3D 打印成型后试样力学性能较差问题,采用涤纶长丝增强光敏树脂的方法,使用光固化3D 打印设备将涤纶长丝和光敏树脂复合成型制备涤纶增强复合材料。为获得较好的增强效果,对涤纶进行碱处理,研究了碱处理各条件下涤纶的减量率与纤维形貌和力学性能的关系,以及其对复合材料力学性能的影响。结果表明:随着减量率的增加,涤纶的形貌及力学性能改变越明显;当涤纶减量率为 16. 2%时,纤维表面出现连续纵向沟壑,力学强度下降 6%,纤维的增强效果最好;经过改性处理的涤纶增强复合材料的拉伸强度和弯曲强度分别达到 78 MPa 和 471 MPa,相比于未处理的纤维增强复合材料分别提升了 66%和 336%。
Aiming at the problem of poor mechanical properties of photosensitive resin after 3D printing, the method using polyester filament to reinforce photosensitive resin was adopted to fabricate polyester reinforced composite material by composite molding of polyester filament and photosensitive resin using stereo lithography appearance equipment. In order to obtain better reinforcement effect, the polyester fiber was treated with alkali. The relationship between the alkali reduction ratio of polyester and the morphology and mechanical properties of the polyester under various alkali treatment conditions was analyzed, and its influence on the mechanical properties of the composite was measured. The results show that the morphology and mechanical properties of the fiber change more obviously with the increase of alkali reduction ratio. When the polyester alkali reduction ratio is 16.2%, continuous longitudinal gully appears on the fiber surface, and the fiber mechanical strength decreases by 6%, and the fiber reinforcing effect is the best. The tensile strength and flexural strength of the modified polyester fiber reinforced composites reach 78 MPa and 471 MPa, respectively, and the tensile strength and flexural strength increase by 66% and 336%, compared with the untreated fiber reinforced composite, respectively.
作者
宋星
祝成炎
蔡冯杰
吕智宁
田伟
SONG Xing;ZHU Chengyan;CAI Fengjie;Lü Zhining;TIAN Wei(Silk Institute, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou,Zhejiang 310018,China)
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2019年第7期97-102,共6页
Journal of Textile Research
关键词
涤纶
光敏树脂
3D
打印
复合材料
碱处理
拉伸强度
弯曲强度
polyester fiber
photosensiltive resin
3D printing
composite material
alkali treatment
tensile strength
flexural strength
