摘要
采用机械共混法制备不同成分的尼龙12(PA12)与聚苯乙烯(PS)复合粉末,对其进行选择性激光烧结制备成形制件,研究了PA12/PS复合粉末的成分对成形件的力学性能、尺寸精度及断口形貌的影响。结果表明:当PS的质量分数超过40%时PA12/PS成形件的力学性能明显降低,而当PS质量分数为20%时复合粉末烧结成形件的拉伸强度、断裂延伸率、弯曲强度以及弯曲模量比PA12烧结的成形件分别提高了7.08%、10.19%、6.51%和8.89%,且各方向尺寸精度同比PA12也均有提高。
The composite powders of nylon 12（PA12） and polystyrene（PS） with different mass fraction were prepared by mechanical mixing method and then work pieces of the composite powders was prepared by selective laser sintering（SLS）. The effect of the PA12 / PS ratio on the mechanical property,dimensional accuracy and fractured microcosmic morphologies of the sinteredwork pieces were investigated. The results show that when the mass fraction of PS exceeds 40% the mechanical properties of the sintered specimens decreased obviously and when mass fraction of PS is 20% the tensile strength,breaking elongation, flexural strength and flexural modulus are increased by 7.08%, 10.19%, 6.51% and8.89%, respectively in comparison with the sintered specimens of PA12. And the dimensional accuracy was also increased.
作者
周泽全
辛勇
曹传亮
ZHOU Zequan XIN Yong CAO Chuanliang(School of Mechanical and Electrical Engineering, Nanchang University, Nanchang 330031, China)
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2016年第10期759-762,共4页
Chinese Journal of Materials Research
基金
国家自然科学基金51365038
江西省科技支撑计划20122BBE500044
江西省高校科技落地计划KJLD12058资助项目~~
