摘要
为了提高绿色环保木塑复合材料的选择性激光烧结(SLS)制件的力学性能,以松木粉和高分子材料聚醚砜(PES)粉末及极少量的碳纳米管(CNT)为主要组分,通过选择性激光烧结方法 (SLS)制备了碳纳米管/木塑复合材料制件,研究了CNT含量对于SLS制件力学性能、烧结机理及弯曲断口形貌的影响。结果表明,当CNT的含量由0.05%逐渐升至0.15%时,制件的拉伸强度、弯曲强度和弹性模量呈现出先升高后降低的趋势,在含量为0.1%时最高。与未加入CNT的制件相比,弯曲强度增大76.3%,弯曲模量增大227.9%,拉伸强度增大128.7%。通过弯曲断口分析,CNT的添加改变了制件的微观组织形貌与烧结机理,对于制件的力学性能的提高有积极作用。
In order to improve the mechanical properties of selective laser sintering （SLS） specimens of green environmental protection wood plastic composites, with very small amounts of carbon nanotubes （CNTs）, pine wood powder and polymer polyether sulfone （PES） powder as main components, CNTs/ wood composites specimens were prepared by SIS. The effects of CNTs contents on the mechanical properties, sintering mechanism and fracture morphology of SLS specimens were analyzed. The experimental results show that with the increasing of CNTs contents within 0. 05wt% - 0. 15wt%, the tensile strength, bending strength and elasticity modulus first increase and then decrease, and they have the highest values when 0. lwt% CNTs. Compared with the specimens without CNTs, the tensile strength, bending strength and elasticity modulus of the specimens with CNTs increase by 76. 3%, 227.9% and 128.7% , respectively. The addition of CNTs has a significant influence on the fracture morphology of the specimens and improved the sintering strength. The addition of CNTs changes the sintering mechanism of wood plastic composites and has a positive influence on the mechanical properties of the specimens.
出处
《塑料工业》
CSCD
北大核心
2017年第9期82-86,102,共6页
China Plastics Industry
基金
中央高校基本科研业务费专项资金项目(2572017DY01)
黑龙江省自然科学基金项目(LC2015010)
黑龙江省博士后特别资助项目(LBH-Z12019)
国家自然科学基金项目(51305075)
国家自然科学基金(51475089)
哈尔滨市优秀学科带头人基金(2015RAXXJ022)
中央引导地方科技发展专项(ZY16C03)
关键词
选择性激光烧结
木塑复合材料
碳纳米管
力学性能
烧结机理
Selective Laser Sintering
Wood-plastic Composites
Carbon Nanotubes
Mechanical Properties
Sintering Mechanism
