書誌事項
- タイトル別名
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- Effects of Rib Shape and Glass Fiber Content on Mechanical and Thermal Properties of an Injection Molded Thin Short-GF/LCP Part
抄録
LCP (Liquid Crystalline Polymer) is widely used for the injection molded parts of small, thin-walled, and fine shapes. However, strong anisotropy appears in thermal and mechanical properties (ex. coefficient of thermal expansion, bending rigidity) of the parts for molecular orientation by shearing in a flow-solidification process. Therefore, LCP is generally used with the short fiber of glass or carbon for the anisotropic relaxation and reinforcement. In this paper, we discussed the changes of thermal and mechanical properties of parts with thin-walled rib by the dimensional factor (thickness of the rib and base plate) and the material factor (glass fiber content) as parameters. To evaluate anisotropy of the rib, TD (Transverse Direction) was evaluated by the coefficient of thermal expansion measured with TMA. Moreover, MD (Machine Direction) was evaluated with the bending rigidity by measuring deflection of rib.<BR>As a result, in the part with the thin-wall which is relatively thin compared with the length of glass fiber, the following points were obtained;<BR>(1) Cause-specific trends in the anisotropy of coefficient of thermal expansion of the rib in the case that glass fiber content is high and the thickness of the rib and base plate are thin.<BR>(2) Bending rigidity of the rib is higher when the thickness of the rib is thin, and less susceptible to the thickness of the base plate or glass fiber content when the rib is thick.<BR>(3) Aggregation of glass fiber occurs near the entrance of the rib in the case that glass fiber content is high and the thickness of rib and base plate are thin.
収録刊行物
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- 成形加工
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成形加工 22 (9), 512-518, 2010
一般社団法人 プラスチック成形加工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679437516160
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- NII論文ID
- 130004515970
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- BIBCODE
- 2010SeiKa..22..512S
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- COI
- 1:CAS:528:DC%2BC3cXhtlegtb3L
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- ISSN
- 18837417
- 09154027
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可