短繊維強化ポリプロピレン押出材の縦弾性係数と強度に及ぼす成形条件の影響
| Autor: | Mamoru Mizuno, Yukio Sanomura, Munehiro Kawamura, Kunio Hayakawa |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Materials science
Polymers and Plastics Aggregate modulus Modulus Young's modulus General Chemistry Die swell symbols.namesake Ultimate tensile strength Materials Chemistry Ceramics and Composites symbols General Earth and Planetary Sciences Extrusion Fiber Composite material General Environmental Science Tensile testing |
| Zdroj: | Seikei-Kakou. 18:293-299 |
| ISSN: | 1883-7417 0915-4027 |
| DOI: | 10.4325/seikeikakou.18.293 |
| Popis: | We examined the effects of process conditions on Young's modulus and tensile strength of extruded short-fiber reinforced thermoplastics. With increasing extrusion ratio and decreasing extrusion temperature, the fiber alignment increases, the mean fiber length decreases, and the mechanical properties of the matrix are improved. The orientation parameter, mean fiber length, Young's modulus, and tensile strength of the matrix are described as a function of extrusion ratio and extrusion temperature. The models proposed by Fukuda and Kawata, and Fukuda and Chou are applied to predict Young's modulus and tensile strength of the composites using orientation parameter. By comparing the predicted Young's modulus and tensile strength with experimental results, the validity of the models is examined. The prediction of Young's modulus agreed quit with the experimental results. The tensile strength of composite extruded below the melting point nearly matched that of the neat matrix. There is no the strengthening effect of the fiber since the angle between fracture surface and fiber direction is very small. POLYM. COMPOS. 28:29–35, 2007. © 2007 Society of Plastics Engineers |
| Databáze: | OpenAIRE |
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