高密度ポリエチレン/フイラー複合材料の力学特性. (Japanese)

Mechanical Properties of High Density Polyethylene (HDPE)/Filler Composite. (English)

For high density polyethylene (HDPE)/CaCO3 composites, CaCO3inclusion influenced the mechanical properties significantly. The impact fracture behavior of HDPE depends on the diameter of the CaCO3particles. When investigating HDPE showed ductile fracture in impact testing, CaCO3inclusion increased tensile yield stress and impact strength. Especially, the CaCO3having 1.4 jam of diameter improved significantly the impact strength. On the other hand, when the HDPE showing brittle fracture at impact test was used, CaCO3inclusion decreased tensile yield stress and impact strength. Thus, during impact testing, CaCO3inclusion varied ductile HDPE to be more ductile, while, in contrast, brittle HDPE became more brittle. [ABSTRACT FROM AUTHOR]

高密度ポリエチレン(HDPE)/炭酸カルシウム(CaCO3)複合材料において，CaCO3添加が力学特性に及ぼす効果は，HDPE単独の衝撃破壊挙動とCaCO3の粒子径に大きく影響を受けた．衝撃試験時に延性破壊するHDPEをマトリックスとして用いた場合，CaCO3添加は引張降伏応力と衝撃強度を向上させた．とくに，1.4 µmのCaCO3は衝撃強度を顕著に向上させた．一方，衝撃試験時に脆性破壊するHDPEをマトリックスとして用いた場合，CaCO3添加は引張降伏応力と衝撃強度を低下させた．粒子径のより小さなCaCO3は，粒子径のより大きなCaCO3と比較してわずかに高い引張降伏応力と衝撃強度を与えた．このHDPEへのCaCO3の添加は，衝撃破壊時において，延性破壊するHDPEをより延性的に変化させ，脆性破壊するHDPEをより脆性的に変化させた． [ABSTRACT FROM AUTHOR]

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