| Classification: | Calcium Carbonate Powder |
|---|---|
| Purity: | 99.999%Min |
| Color: | White |
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| Silicone adhesive special active nano calcium carbonate has the advantages of small particles, uniform particle size distribution, large specific surface area, low oil absorption value and low water content. It can be widely used in the production of polyurethane and silicone adhesives, and has the following advantages: |
| 1. Low water content, near-neutral, and good chemical stability, no chemical reaction with the curing adhesive in the adhesive. |
| 2. The large amount of addition can greatly reduce the cost of adhesive products (for example: the amount of silicone rubber gasket is more than 50%, the amount of polyurethane adhesive is 20-30%). |
| 3. It has a reinforcing effect, which can improve the mechanical properties of the adhesive, reduce its shrinkage and thermal expansion coefficient during curing, increase thermal conductivity, improve heat resistance and adhesion, improve mechanical strength (hardness and compression strength) and corrosion resistance Performance; It can also lubricate the adhesive, improve the operating conditions of the operation, and improve the bonding performance. |
| 4. Nano calcium carbonate has a small particle size and a large specific surface area. After a certain surface treatment, it has good compatibility with the adhesive. It can be used as a thixotropic agent in the adhesive system to adjust the viscosity of the adhesive and prevent the adhesive from being in the vertical plane. Sagging occurs during construction, improving its retention characteristics. |
| 5. Nano-calcium carbonate is easy to color in the process of making colorants, and will not affect the color of the products. |
| 6. It has different modification effects in different adhesives, which can improve its rheological properties in PVC plastisols; it can increase strength and wear resistance in silicone structural sealants; it can play a role in hot melt adhesives. To increase reinforcement and heat resistance; in water-based adhesives can play a role in thickening and thickening. |
| Index | CaCO3 |
| Appearance | White Powder |
| Specific Gravity g / cm3 | 2.5-2.6 |
| Bulk Density g / ml | 0.68 |
| Whiteness % | ≥96 |
| Average Particle Size(nm) | 15-40,60-80 |
| Particle Shape | Cube |
| PH (10g dissolved in 90ml water) | 8.5-9.5 |
| Moisture% | ≤0.4 |
| CaCO3(%) | ≥94.5 |
| Activation Rate% | ≥99 |
| MgO(%) | ≤0.5 |
| Oil Absorption Value(g/100g) | ≤32 |
| Surface Treatment Agent | Compound treatment agent |
| Packing: | 50KGs Iron Drum or 1000KGs Jumb Bag or packing as per request. |
| Storare: | Storing in sealed, dry and cool condition, not exposing to air for long time, avoiding moisture. |
| Characteristics: | Pink powder, slightly soluble in inorganic acid, insoluble in water. |
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