竹粉/PA复合混粉激光烧结制件弯曲强度研究  

Study on Bamboo Powder / PA Blend Strength by Laser Sintering

作　　者：赵德金[1,2] 郭艳玲[1] 宋文龙[1] 

机构地区：[1]东北林业大学机电工程学院,黑龙江哈尔滨150040 [2]延边大学工学院,吉林延吉133002

出　　处：《安徽农业科学》2015年第6期184-186,共3页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(51075067);2013年度高等学校博士学科点专项科研基金资助课题(博导类)(20130062110006)

摘　　要：以竹粉为原料,低熔点聚酰胺(PA)为粘合剂,利用机械混合法制备了竹粉/PA复合混粉。对该材料激光烧结成型件进行了弯曲强度测试。试验结果表明竹粉/PA复合混粉激光烧结成型特性好,当其他烧结参数不变的情况下,抗弯强度随激光功率增加而增加,当粉末床能量输入密度为0.22 J/mm3时,弯曲强度为15.1 Mpa,弯曲模量为219.7 Mpa。The bamboo powder was used as raw material and the low-melt polyamide（ PA） as binder in this paper. The bamboo powder / PA blend was prepared by mechanical mixing method. The bending test specimens built by laser sintering were tested by universal mechanical testing machine. The experimental results show that the bamboo powder / PA blend had good forming characteristics using laser sintering method.The bending strength increased with the laser power increased when the other conditions unchanged. The bending strength is 15. 1 Mpa and bending modulus is 219. 7 MPa when the powder bed input energy density is 0. 22 J / mm^3.

关 键 词：竹粉 PA 激光烧结 弯曲强度 弯曲模量 

分 类 号：S784[农业科学—林学]