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你现在的位置是:首页 > 服务项目 > ISO 7214测试(泡沫、塑料、聚乙烯测试)服务项目 Server

ISO 7214测试——

 

ISO泡沫塑料.聚乙烯.试验

Test item

No. of specimens

Figures of test result

Ref. standard

依照标准

7.1 Density 密度测试( kg/m3

5pcs 100*100*100mm

 

Calculate the density in kilograms per cubic metre

 

ISO 845

ISO 1923

7.2compressive stress压缩性

5pcs 100*100*50mm

Determine the compression stress at 10%,25%,50%

ISO 3386-1

7.3compression set 回弹性%

 

5pcs 50*50*25mm

Compress the specimen 25% of its thickness for 22h.

Measure the thickness after a 30 min and a 24h recovery period.

ISO 1856

7.4tensile strength and elongation

拉伸强度(N/mm2)/伸长率(%)

5pcs 152*25*? mm

10mm to 15mm thick

At 500mm/min, Calculate the tensile strength by dividing the maximum breaking force by the original cross-sectional area of the specimen

ISO 1798

7.5dimensional stability at elevated temperature热缩性%

5pcs thickness shall be a minimum of 20mmA

150*150mm*originalB

Method A: determine the temperature at which the change by more than 5% by carrying out the creep test for 7 days with an applied stress of 40 kpa,

Method B: (75±5) and (21±1)h

ISO 7850

ISO 2796

7.6water absorption 吸水性

Method B: 3pcs 100*100 mm (without skins) 3pcs 120*120mm (one or both face)

Method A: for specimens greater than 25mm thick.

Method B: for specimens not more than 25mm thick

A:ISO 2896

B:ISO1923

7.7burning characteristics 燃烧性

5pcs 150*50*13 mm

 

Class :HF-1 /HF-2/ HBF

ISO3582 or ISO 9772

8.7—Tear strength 撕裂强力 (N/cm)

5pcs 100*35.5*10mm

Attach the specimen in the tester and pull it at a rate of (500±10) mm/min until it breaks. Measure the maximum load at the time of break

ISO 7214

8.8Permanent set after repeated compression (%) 反弹性

3pcs 50*50*25mm

Compress the specimen 80000 times interruption to 25% of its initial thickness at a rate of 60 times/min

ISO 7214


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