Effects of manufacturing defects on thermoformed product quality
Effects of manufacturing defects on thermoformed product quality
复制标题
制造缺陷对热成型产品质量的影响
DOI：
10.12748/uujms.201416501
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发表时间：
2014
期刊：
影响因子：
2.8
通讯作者：
E. S. Erdogan
中科院分区：
文献类型：
--
作者：
O. Ekşi;E. S. Erdogan
在适当的真空和温度条件下，采用截锥型热成型模具成形5%和15%重量的碳纤维增强聚丙烯（PP）板材。除此之外，5%重量的玻璃纤维增强高密度聚乙烯（HDPE）板通过热成型使用截锥形，圆柱形和立方形热成型模具成型。本工作中使用的复合片材是用螺杆直径为50mm的实验室型塑料挤出机生产的。在生产HDPE复合片材时，使用了玻璃纤维制造商SISECAM A.S.公司提供的短切玻璃纤维（E-glass）作为增强材料。采用相同的工艺，将PP （Borealis BE50-7032）热塑性颗粒作为碳纤维复合材料片材的基体材料。在碳纤维增强板中，在制造过程中加入了短切纤维。热成型后，对复合材料半成品进行目测检测。产生影响产品质量的视觉缺陷。利用扫描电镜（SEM）对热成型半成品不同截面上的碳纤维分布进行了研究。通过实验研究，探讨了塑料挤出过程中的缺陷对热成型产品质量的影响。
In this study, 5% and 15% in weight carbon fiber reinforced polypropylene (PP) sheets were formed under appropriate vacuum and temperature conditions by using truncated cone-shaped thermoforming mold. In addition to this, 5% in weight glass fiber reinforced High Density Polyethylene (HDPE) sheets were formed using truncated cone-shaped, cylindrical, and cubic shaped thermoforming molds by thermoforming. Composite sheets used in this work were produced with a laboratory-type plastic extruder which has a screw diameter of 50 mm. In production of HDPE composite sheets, as a reinforcing material, chopped glass fibers (E-glass) which were provided from glass fiber manufacturer SISECAM A.S. Company were used. Using the same procedure PP (Borealis BE50-7032) thermoplastic granules were used as a matrix material in production of carbon fiber composite sheets. In carbon fiber reinforced sheets, chopped fibers were added during manufacturing. After thermoforming, composite semi-products were examined by visual inspection. Visual defects that affect product quality were obtained. Also carbon fiber distribution was investigated on different sections which were taken from the thermoformed semi-products by Scanning Electron Microscopy (SEM). Through this experimental study, it is aimed to investigate the effect of defects during plastic extrusion on thermoformed product quality.