A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To provide an impact absorption floor material excellent in both of impact absorbing properties and load bearing properties.SOLUTION: An impact absorption floor material 110 for suppressing a fracture of a thighbone which is caused by impact due to falling of a user includes an upper-floor material 111 having a foam structure with an expansion ratio of 2 or more and 5 or less, and a floor substrate material 112 provided under the upper-floor material 111 and having a foam structure with an expansion ratio of 3 or more and 20 or less. The floor substrate material 112 has a dynamic viscoelasticity Tanδ at a measuring frequency 1 Hz at 25°C of 0.1 or more and 0.7 or less, and a complex elastic modulus E* of 0.3 Mpa or more and 10 MPa or less.SELECTED DRAWING: Figure 1
【課題】衝撃吸収性と耐荷重性とを兼ね備えた衝撃吸収床材を提供する。【解決手段】使用者の転倒による衝撃で生じる大腿骨の骨折を抑制する衝撃吸収床材１１０において、発泡倍率２倍以上５倍以下の発泡構造を有する床上材１１１と、床上材１１１の下方に設けられて発泡倍率３倍以上２０倍以下の発泡構造を有する床下地材１１２と、を有し、床下地材１１２は、２５℃における測定周波数１Ｈｚでの動的粘弾性Ｔａｎδが０．１以上０．７以下且つ複素弾性率Ｅ＊が０．３ＭＰａ以上１０ＭＰａ以下である。【選択図】図１
To provide an impact absorption floor material excellent in both of impact absorbing properties and load bearing properties.SOLUTION: An impact absorption floor material 110 for suppressing a fracture of a thighbone which is caused by impact due to falling of a user includes an upper-floor material 111 having a foam structure with an expansion ratio of 2 or more and 5 or less, and a floor substrate material 112 provided under the upper-floor material 111 and having a foam structure with an expansion ratio of 3 or more and 20 or less. The floor substrate material 112 has a dynamic viscoelasticity Tanδ at a measuring frequency 1 Hz at 25°C of 0.1 or more and 0.7 or less, and a complex elastic modulus E* of 0.3 Mpa or more and 10 MPa or less.SELECTED DRAWING: Figure 1
【課題】衝撃吸収性と耐荷重性とを兼ね備えた衝撃吸収床材を提供する。【解決手段】使用者の転倒による衝撃で生じる大腿骨の骨折を抑制する衝撃吸収床材１１０において、発泡倍率２倍以上５倍以下の発泡構造を有する床上材１１１と、床上材１１１の下方に設けられて発泡倍率３倍以上２０倍以下の発泡構造を有する床下地材１１２と、を有し、床下地材１１２は、２５℃における測定周波数１Ｈｚでの動的粘弾性Ｔａｎδが０．１以上０．７以下且つ複素弾性率Ｅ＊が０．３ＭＰａ以上１０ＭＰａ以下である。【選択図】図１
IMPACT ABSORPTION FLOOR MATERIAL
衝撃吸収床材
SANO MAMIKO (author)
2021-09-24
Patent
Electronic Resource
Japanese