2013 Fiscal Year Final Research Report
Establishing a new method of foaming process using ultrasonic
| Project/Area Number |
24656434
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Material processing/treatments
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| Research Institution | Yamagata University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KOYAMA Kiyohito 山形大学, 大学院理工学研究科, 教授 (60007218)
YANAGIDA Hirotaka 山形大学, 大学院理工学研究科, 准教授 (80323179)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 超音波 / 発泡成形 / 微細加工 |
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| Research Abstract |
This study is to clarify the influence of ultrasonic irradiation on foaming.The supercritical carbon dioxide was dissolved into the sample.Foaming was carried out in the hot water (temperature was slightly lower than Tg of PS) by irradiating ultrasonic in order to propagate effective ultrasonic to the sample.
We used amorphous polystyrene (a-PS) as a sample because ultrasonic can affect the crystallization. The concave vibrator which can focus ultrasonic wave on the sample enhanced cell number density in comparison with the planar vibrator.The use of concave vibrator caused arrangement of cells with different size in laminae.
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