| 标准编号 Standard/Code | 标准名称 Standard Title |
| ISO 7214 | Cellular plastics - Polyethylene - Methods of test |
ISO 7214 specifies methods for testing flexible and semi-rigid cellular plastics made from polyethylene. Cellular plastics containing copolymers of ethylene or blends of polymers with polyethylene may also be tested by the procedures of this International Standard provided these materials have characteristics similar to polyethylene as described in ISO 1872-1, or copolymers of ethylene as described in ISO 4613-1.
Mandatory tests suitable for characterization of cellular polyethylene, regardless of end use, and optional tests for the determination of properties that are relevant to certain uses are described.
Test Requirement 测试要求：
| Test item | No. of specimens | Figures of test result | Ref. standard |
| 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 | |||
| 7.2—compressive stress压缩性 | 5pcs 100*100*50mm | Determine the compression stress at 10%,25%,50% | ISO 3386-1 |
| 7.3—compression set 回弹性% | 5pcs 50*50*25mm | Compress the specimen 25% of its thickness for 22h. | ISO 1856 |
| Measure the thickness after a 30 min and a 24h recovery period. | |||
| 7.4—tensile strength and elongation | 5pcs 152*25*? mm | At 500mm/min, Calculate the tensile strength by dividing the maximum breaking force by the original cross-sectional area of the specimen | ISO 1798 |
| 拉伸强度(N/mm2)/伸长率(%) | 10mm to 15mm thick | ||
| 7.5—dimensional stability at elevated temperature热缩性% | 5pcs thickness shall be a minimum of 20mm（A） | 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, | ISO 7850 |
| 150*150mm*original（B） | Method B: (75±5)℃ and (21±1)h | ISO 2796 | |
| 7.6—water 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. | A:ISO 2896 |
| Method B: for specimens not more than 25mm thick | B:ISO 1923 | ||
| 7.7—burning characteristics 燃烧性 | 5pcs 150*50*13 mm | Class :HF-1 /HF-2/ HBF | ISO 3582 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 |
| 8.8—Permanent 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 |
Sample Size 样品数量 / 送样规格: on request
Lead Time / TAT (Turn Around Time) 测试周期: 常规服务 Regular service 7-9 working days
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