检索结果-南通市图书馆

Effects of spinneret structure on poly-ether-ether-ketone fibers by screw extrusion

Journal of Central South University of Technology 2005年第3期12卷 272-275页

作者：赵新英益小苏许忠斌许亚洪 Beijing Institute of Aeronautical Materials Beijing 100095China School of Industrial Equipment and Control Engineering South China University of TechnologyGuangzhou 510225China

According to the characters of poly-ether-ether-ketone (PEEK) plastic, the spinnerets with three kinds of different structure were designed. The effects of spinneret structure on the melt spinning conditions, melt flow instability of the screw extrusion, and the performance of PEEK fibers were studied. The results show that the appropriate screw extrusion temperature is 370 385℃. The PEEK fibers extruded using the spinnerets with L/D=6, 8holes and 0.5mm in diameter have better performances. The performances of PEEK fibers are related to the dia- meter of the spinneret hole. Increasing the L/D value of the spinnerets can not always improve the surface quality and the performances of PEEK fibers. The extrusion pressure is about 50% of that of the spinneret with 12holes and 0.3mm in diameter.

关键词： PEEK fiber spinneret structure melt spinning screw extrusion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Design, Characterization, and 3D Printing of Cardiovascular Stents with Zero Poisson’s Ratio in Longitudinal Deformation

引用

Engineering 2021年第7期7卷 979-990页

作者： Chengjin Wang Lei Zhang Yongcong Fang Wei Sun Biomanufacturing Center Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing Beijing 100084China “Biomanufacturing and Engineering Living Systems”Innovation International Talents Base(111 Base) Beijing 100084China Department of Mechanical Engineering Drexel UniversityPhiladelphiaPA 19104USA

Inherent drawbacks associated with drug-eluting stents have prompted the development of bioresorbable cardiovascular *** manufacturing(3-dimentional(3D)printing)has been widely applied in medical *** this study,we develop a novel screw extrusion-based 3D printing system with a new designed mini-screw extruder to fabricate stents.A stent with a zero Poisson’s ratio(ZPR)structure is designed,and a preliminary monofilament test is conducted to investigate appropriate fabrication parameters.3D-printed stents with different geometric structures are fabricated and analyzed by observation of the surface *** evaluation of the mechanical properties and a preliminary biological evaluation of 3D-printed stents with different parameters are carried *** conclusion,the screw extrusion-based 3D printing system shows potential for customizable stent fabrication.

关键词： Additive manufacturing 3D printing screw extrusion Cardiovascular stent Zero Poisson’s ratio

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：