2010 Fiscal Year Final Research Report
Structure and physical properties of the polyolefin materials Produced by rotomoldings
| Project/Area Number |
20550184
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Kanazawa University |
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Principal Investigator |
NITTA Koh-Hei Kanazawa University, 自然システム学系, 教授 (70260560)
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| Co-Investigator(Kenkyū-buntansha) |
KAWAMURA Takanobu 金沢大学, 自然システム学系, 助教 (20377401)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 繊維材料 / ポリオレフィン / 溶融エレクトロスピニング |
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| Research Abstract |
A uniaxial roto-molding system with a glass mold allows direct observation of the rolling motion of sample particles during molding. The apparatus is used to investigate the adherence behavior of EMMA and LLDPE powders in situ during molding. Direct observation of the rolling motion and adhesion process of molding powders in situ during rotational molding showed that the adhesion starting temperature of semi-crystalline polymer powders corresponds to the melting temperature of the materials. Differently layered structures from the mold contact side to the molding interior or "air" side can be constructed by controlling the order of the introduction of the powder into the mold and by the adhesion temperature, even for blended samples with the same components. The tensile properties of the blend products were strongly affected by the layered structure. The experimental values of Young's modulus were quite in accordance with the theoretical values calculated using simple Takayanagi models.
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