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材料类型
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材料
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一般特征
DESMODUR VKS 20 FH is a liquid, dark brown polymeric isocyanate based on diphenylmethane-4,4'-diisocyanate with isomers and homologues of higher functionality.
It can be used in conjunction with polyols for the production of polyurethane products.
储存条件
Recommended storage temperature: 10 – 30 °C
Protect from moisture, heat and foreign material.
Covestro represents that, for a period of 6 months following the day of shipment as stated in the respective delivery documents, the product will meet the values set forth in section "specification" above provided that the product is stored in full compliance with the storage conditions and is otherwise handled appropriately.
The lapse of this period does not necessarily mean that the product no longer meets specifications. However, prior to using said product, Covestro recommends to test such a product if it still meets the specifications. Covestro does not make any representation regarding the product after the period and Covestro shall not be responsible or liable in any way for the product failing to meet specifications after the period.
样品
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技术属性和数据表
命名属性特征
| 属性名称 | 测试方法 | 单位 | 数值 |
|---|---|---|---|
| Density 20 °C | DIN 51757 | g/cm³ | approx. 1.23 |
| Coefficient of thermal expansion | K^-1 | 0.000659 | |
| Phenylisocyanate content | MDI-01-09 | ppm | max. 50 |
| Specific heat (cp) | kJ/kgK | approx. 1.51 |
命名属性规范
| 属性名称 | 测试方法 | 单位 | 数值 |
|---|---|---|---|
| Viscosity at 25 °C * | MDI-01-02 | mPa*s | 160 - 240 |
| Acidity | MDI-01-03 | ppm HCI | 80 - 150 |
| NCO content | MDI-01-01 | % by wt. | 30.5 - 32.5 |
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技术数据表
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安全数据表无可用直接下载，请访问 www.productsafetyfirst.covestro.com
