嵌件注射成型连续碳纤维增强聚酰胺6复合材料力学性能  

Mechanical Properties of Continuous Carbon Fiber Reinforced Polyamide 6 Composite Prepared by Embedded Injection Molding

作　　者：李福海 何其超 王建[1] LI Fuhai;HE Qichao;WANG Jian(Beijing University of Chemical Technology,College of Mechanical and Electrical Engineering,Beijing 100029,China)

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《塑料工业》2023年第1期97-102,共6页China Plastics Industry

基　　金：国家自然科学基金面上项目(51873021);中央高校基本科研业务费专项资金资助(buctrc202005)。

摘　　要：研究嵌件注射方式制造嵌件样条的可行性与回火工艺对制品性能的影响。使用连续碳纤维预浸带贴片(30 mm×20 mm×0.15 mm)作为嵌件,尼龙6(PA6)材料作为塑件,注射加工完成嵌件制品的制备。将制品压制成拉伸和弯曲样条(45 mm×5 mm×2 mm),并对嵌件样条表面进行回火处理,对比回火前后样条力学性能的变化。结果表明,回火处理后的嵌件样条的拉伸和弯曲性能都有相应的提高,平均拉伸强度达到了52.03 MPa,平均弯曲强度达到了64.65 MPa,平均弯曲模量达到了2 458.18 MPa,约是纯尼龙样条的2.7倍。根据拉伸后样条的断裂情况,使用光学显微镜观察了嵌件制品的界面黏结性。在拉伸断裂面上未观察到嵌件与塑件之间的空隙,表明两者间的黏结性良好。因此,连续碳纤维预浸带作为嵌件通过注塑成型和回火处理,可提升制品的综合性能。The feasibility of manufacturing insert splines by insert injection and the effect of tempering process on product properties were studied.Using continuous carbon fiber prepreg tape(30 mm×20 mm×0.15 mm)as the insert, nylon 6(PA6)material as the plastic part, the preparation of the insert product was completed by injection processing.The products were pressed into tensile and bending splines(45 mm×5 mm×2 mm),and the surface of the insert splines was tempered to compare the mechanical properties of the splines before and after tempering.The results show that the tensile and flexural properties of the tempered insert splines are improved accordingly.The average tensile strength reaches 52.03 MPa, the average flexural strength reaches 64.65 MPa, and the average flexural modulus reaches 2 458.18 MPa, about 2.7 times that of pure nylon splines.The interfacial adhesion of the insert product is observed by optical microscope, according to the fracture of the spline after stretching.No voids are observed between the insert and the plastic part on the tensile fracture surface, indicating good adhesion between the two.Therefore, the continuous carbon fiber prepreg tape as an insert can improve the overall performance of the product through injection molding and tempering.

关 键 词：嵌件注射 尼龙6 连续碳纤维预浸带 回火 力学性能 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]