Knowde Enhanced TDS
Identification & Functionality
- Plastics & Elastomers Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
Applications & Uses
- Applications
- Plastics & Elastomers End Uses
- Uses
Kezadol GR should be used in order to prevent blisters and porosity in the following rubber processes.-
- Pressureless continuous curing systems like micro-wave, LCM, fluid beds or hot air
- Low pressure curing in the cable industry
- In compounds cured in heat transfer fluids
- Dosage
The dosage of Kezadol GR (80 % CaO) depends on the moisture contained in the compound. The molecular weight of calcium oxide is 56, and 18 for water. By these relations it can be seen that for every part of water by weight expected in the rubber compound approx. 4 parts of Kezadol GR are required in order to avoid blisters on profiles. It is a standard practice to add quantities in excess of this amount, however, usually between 5 and 10 % calculated on the filler quantity. We recommend to add Kezadol GR in the second mixing stage. A big part of the humidity can escape in the first step at higher mixing temperatures without being absorbed by CaO. Kezadol GR can be added to the compound together with the special packing, if mixing temperatures of more than 85 °C are achieved (melting range of the PE foil 60–85 °C). Attention! AN OVERDOSAGE CAN CAUSE WHITE SPECKS
Properties
- Appearance
- light grey, soft granules (diameter 6–8 mm), free-flowing
- Physical Properties
Value | Units | Test Method / Conditions | |
Density at 20 °C | approx. 2.36 | g/cm³ | — |
Packaging & Availability
- Packaging
hermetically sealed PE bags of low melting PE foil (60–85 °C) of 1 kg each in cartons of 15 kg each, stored on pallets with 960 kg net (standard). on customers’ request any measurement between 0.5 and 5 kg is possible.
Storage & Handling
- Storage
1 year under cool and dry storage conditions in sealed packing