PVT控制技術建置與應用於射出成型品質控制之研究

張詠翔

doi:10.6840/cycu201700135

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PVT控制技术建置与应用於射出成型品质控制之研究

Investigation on the establishment of PVT control method and its application to injection molded part quality

张咏翔 , 博士　　导师：陈夏宗　　

繁体中文 DOI： 10.6840/cycu201700135

动态PVT品质控制；射出成型品质控制；红外线温度感测器；射出成型稳定性； Dynamic PVT control method ； injection molded part quality control ； injection molding stability ； infrared temperature sensor

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摘要 │ 参考文献 (75) │ 被引用文献 (1) │ 国际计量

摘要〈TOP〉

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PVT relation is one of important properties for polymer processing which is affected by temperature and pressure changes. Due to the unpredictable property, it is difficult to produce with constant quality during consecutive molding process. Traditionally, the qualities of injection molded part rely on experienced operator for adjusting molding parameters; however, those parameter modifying processes are without scientific theory and standard procedure. It becomes an essential research issue for now on. This study based on the PVT theory created a practical PVT monitoring technology by using infrared temperature sensor with pressure sensor set in the mold. With those two practical data, PVT course can be described. Consequently, PVT monitoring technology was utilized to investigate the influence of molding parameters to the controllability of product quality, optimizing product quality, and molding stability. 
	The result shows that the PVT curves are constant under consecutive molding cycle. PVT, at the same time, reveals that the influence between molding parameters and quality controllability. Specific volume is directly related to product quality such as shrinkage, weight, warpage, and tensile strength. Shear heating was observed by PVT curves under different temperature setting and filling times. On the other hand, four control methods for optimizing product qualities were investigated. Dynamic PVT control method can mold a part with smallest total shrinkage, heaviest weight, less warpage, and greater strength. For molding stability, PVT control method can constant molded quality not only on product weight but also on shrinkage and warpage. The method resulted in 54% shrinkage repeatability precision up to the traditional producing process, 23% in weight repeatability precision, and 12% in warpage repeatability.

参考文献 ( 75 ) 〈TOP〉

8. Berry, J.M.; Brostow, W.M.; Hess, M. & Jacobs, E.G. (1998). P-V-T relations in a series of longitudinal polymer liquid crystals with varying mesogen concentration. Polymer, Vol. 39, No. 17, (August 1998), pp. 4081-4088. ISSN 0032-3861
连结：
9. He, J. & Zoller, P. (1994). Crystallization of polypropylene, nylon-66 and poly(ethylene terephthalate) at pressures to 200 MPa: kinetics and characterization of products, Journal of Polymer Science Part B: Polymer Physics, Vol. 32, No. 6, pp. 1049-1067. ISSN 0887-6266
连结：
11. Quach, A. & Simha, R. (1971). Pressure-volume-temperature properties and transitions of amorphous polymers; polystyrene and poly (orthomethylstyrenes). Journal of Applied Physics, Vol. 42, No. 12, (November 1971), pp. 4592-4606. ISSN 0021-8979
连结：
12. Zoller, P.; Bolli, P.; Pahud, V. & Ackermann, H. (1976). Apparatus for measuring pressure– volume–temperature relationships of polymers to 350 °C and 2200 kg/cm2. Review of Scientific Instruments, Vol. 47, No. 8, (August 1976), pp. 948-952. ISSN 0034-6748
连结：
13. Zoller, P. & Fakhreddine, Y.A. (1994). Pressure-volume-temperature studies of semicrystalline polymers. Thermochimica Acta, Vol. 238, (June 1994), pp. 397-415. ISSN 0040-6031
连结：

被引用文献 (1) 〈TOP〉

黄品纲(2017)。半结晶聚合物应用PVT控制技术与射出成型品质之参数优化研究。中原大学机械工程学系学位论文。2017。1-115。

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DOI可强化引用精确性、增强学术圈连结，并给予使用者跨平台的良好使用经验，目前在全世界已有超过五千万个对象申请DOI。如想对DOI的使用与概念有进一步了解，请参考（）。