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材料类型
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材料
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一般特征
Desmocoll 621/2 is a predominantly linear hydroxyl polyurethane.
Desmocoll 621/2 is a flexible polyurethane with a high rate of crystallization and low thermoplasticity. It has good adhesion on many flexible PVC substrates. Desmocoll 621/2 is characterized in particular by its long tack live after thermal activation.
Desmocoll 621/2 is a flexible polyurethane with a high rate of crystallization and low thermoplasticity. It has good adhesion on many flexible PVC substrates. Desmocoll 621/2 is characterized in particular by its long tack live after thermal activation.
储存条件
Desmocoll 621/2 should be stored in tightly sealed original containers and protected from direct sunlight, moisture, heat, and foreign materials. Recommended storage temperature is 10º-25ºC.
样品
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包装类型
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技术属性和数据表
| 属性名称 | 测试方法 | 单位 | 数值 |
|---|---|---|---|
| Solution viscosity , 15% inbutanone-2 (MEK)at 23oC, Haake | mPa∙s | 2,100 - 3,100 |
| 属性名称 | 测试方法 | 单位 | 数值 |
|---|---|---|---|
| Density | g/ml | approx. 1.2 | |
| Crystallization | h | approx. 2 | |
| Heat resistance | °C | approx. 70 | |
| Hydroxyl content | % | < 0.1 | |
| Bondability of materials containing plasticizers | Very good | ||
| Minimum activation temperature | °C | approx. 55 | |
| Hot tack life | min. | approx. 8 |
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