對應(yīng)法規(guī):ASTM D 3574:2005
CNAS認(rèn)可項(xiàng)目:是
ASTM D 3574:2005—海棉物理性能測試
Test item
(測試項(xiàng)目)
No. of specimens
(試樣尺寸)
Figures of test result
(數(shù)據(jù)的測試結(jié)果)
Test A—Density 密度測試( kg/m3)
3pcs 100*100*100mm
Calculate the density in kilograms per cubic metre
Test B1—IFD 硬度 (N)
3pcs 380*380*100mm
The force in newtons required for 25% and 65% indentations
Test B2—IFD-specified force
指定力下的硬度 (N)
3pcs 380*380*實(shí)際厚度 mm(厚度大于50mm)
The thickness after 60±3s at 4.5N,110N and 220N
Test C—Compression force deflection test 壓縮系數(shù)
3pcs 50*50*25mm
Compress the specimen 50% of the thickness at 50mm/min and determine the final force after 60±3s
在壓縮50%的情況下保持1分鐘,看讀數(shù)的值
Test D—Constant deflection compression set test 壓縮永久變形(%)
3pcs 50*50*25mm
Place the specimen and deflect it to either 50% 75% or 90% of its thickness, at air oven 70±2℃ and 6% RH. For 22
在以上壓縮比例任選一個(gè),溫度70度,濕度6%,放置22小時(shí),看海綿的恢復(fù)情況
Test E—Tensile/Elongation test拉伸強(qiáng)度(kgf/cm2)/伸長率(%)
3pcs 25.4*139.7*12.5mm
見FIG. 1
At 500mm/min, Calculate the tensile strength by dividing the maximum breaking force by the original cross-sectional area of the specimen
Test F—Tear resistance test
撕裂強(qiáng)度(N/m)
3pcs 152.4*25.4*25.4mm
見FIG. 2
At 500mm/min tear strength in newtons per meter
Test I1—Fatigue test :static force loss test at constant deflection 靜態(tài)疲勞測試
3pcs 380*380*實(shí)際厚度mm(厚度大于50mm)
Percentage loss of thickness and the percentage loss
of 25 and 65 % IFD if the thickness loss is less than 10 %
如果硬度損失小于10%,應(yīng)該考查25%和65%的損失的百分比