膝部防护用材料静态缓压性能

纺织学报 ›› 2016, Vol. 37 ›› Issue (09): 53-58.

膝部防护用材料静态缓压性能

收稿日期:2015-08-12 修回日期:2016-04-25 出版日期:2016-09-15 发布日期:2016-09-19

Static anti-compression performance of knee protector

Received:2015-08-12 Revised:2016-04-25 Online:2016-09-15 Published:2016-09-19

摘要/Abstract

摘要：

为减少摔倒给老年人膝盖部位造成的伤害，编织了经编间隔织物试样，采用万能材料仪对聚氨酯泡沫材料和经编间隔织物的静态缓压性能进行测试，通过对比实际摔倒能量和缓压材料吸收能量的大小评估材料缓压性能的优劣。结果表明：聚氨酯泡沫材料和经编间隔织物的面密度是影响其缓压效果优劣的决定性参数，而间隔纱、面纱的直径及试样的线圈密度是决定间隔织物面密度的主要因素。当外界压强大于３０ｋＰａ时，厚度为２０ｍｍ、面密度为１３５３ｇ／ｍ２的间隔织物试样线圈密度最大，缓压系数最小，缓压效果最好，压缩吸收能为２５９ｋＪ／ｍ２，该间隔织物试样从厚度、编织工艺、成本上来说是最佳的膝部防护用缓压材料。

关键词: 膝部防护用材料, 聚氨酯泡沫材料, 经编间隔织物, 缓压性能, 压缩吸收能

Abstract:

In order to decrease the damage on the knee of the elderly due to falling down, warp knitted spaced fabric was fabricated, and the experiment on static anti-compression performance of polyurethane foam was carried out with the Instron tester. This paper aims to study the knee protective system for the elderly, using the Instron tester AGS-J from Tianjin Polytechnic University to study the static compression performance. This conclusion can be found: for PU sponge, spacer fabric, a certain density of PU and some special structures of spacer fabrics can meet the requirement of the energy release during the fall. Especially, for the spacer fabric, when the internal pressure is above 30Kpa, the buffer coefficient comes to the minimum, and the anti-compression performance of spacer fabric comes to the best.

Key words: knee protector, polyurethane material, spacer fabric, anti-compression performance, compression energy absorption

姜亚明李宁张艳梅 . 膝部防护用材料静态缓压性能[J]. 纺织学报, 2016, 37(09): 53-58.

参考文献

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