抄録
Precision micromolding of polypropylene (PP), polyoxymethylene (POM) and polycarbonate (PC) were performed to develop a micro-scale miniature disc and to clarify the mechanism of structure development in micromolded products. Especially effects of process conditions and cavity thickness on surface properties and structure formation in micromolding were evaluated. These structures of molded products were also analyzed by MDSC, birefringence, and SPM measurements. In case of PC micro-disc products, the molecular orientation in the vicinity of the gate was higher than that of any other position. Birefringence also increased with decreasing cavity thickness. Furthermore it was found that the resin flow became unstable in the cavity thickness of 0.1 mm. From observation of cross-section of molded products, skin-shear-core structures were analyzed. The surface elasticity modulus of products in the vicinity of the gate was higher than that of flow end portion.
| 本文言語 | English |
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| ページ数 | 1 |
| 出版ステータス | Published - 2006 12月 1 |
| イベント | 55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan 継続期間: 2006 9月 20 → 2006 9月 22 |
Other
| Other | 55th Society of Polymer Science Japan Symposium on Macromolecules |
|---|---|
| 国/地域 | Japan |
| City | Toyama |
| Period | 06/9/20 → 06/9/22 |
ASJC Scopus subject areas
- 工学（全般）