Footwear Grade Silica
◆Description of products
Functional footwear grade silica is made by special process, which is widely used in plastic astebatch openings, functional master batch, plastics and PP, PE, PVC, and widely used in PP master batch. Also it can be used as EVA anti-blocking agent and the quantity is about 30%.Aerogel silica ratio of major high transparency, easy to disperse and add. When producing high transparency film, aerogel silica can be used. If not, you can choose the precipitated white carbon black.
◆Application scopes
Silica serves as the main reinforcing filler in footwear to increase the transparency of vulcanized rubber. It also can improve comprehensive physical performances of rubber in the footwear.
◆The specification, feature and application
| Grade | GS-305 | GS-305C |
| Process | aerogel | precipitated |
| Form | White powder | White powder |
| Sio2 content % | 99.9 | 99.7 |
| whiteness | 98 | 96 |
| Average particle size um | 4.5-5.5um | 8-11um |
| Pore volume ml/g | 1.6-1.8 | 1.4 |
| Heating loss % 105℃2h | 2-3 | 2-3 |
| Ignition loss % 950℃2h | 3-4 | 3-4 |
| BET specific surface area ㎡/g | 230-250 | 180-220 |
| DBP absorption oil value ml/100g | 270-280 | 260-270 |
| PH value | 6.5-7.5 | 6.5-7.5 |
| Application scopes | Footwear | |
