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Gasfase wit roet, molecuulformule: SiO2. Wit pluizig poeder, poreus, niet giftig, smaakloos, vrij van vervuiling, bestand tegen hoge temperaturen. Tegelijkertijd heeft het chemische inertie en speciale thixotrope eigenschappen om de treksterkte, scheurweerstand en slijtvastheid van rubberproducten aanzienlijk te verbeteren, rubber na de verbetering van de sterkte van tientallen keren. Reologische en thixotrope controle van vloeibare systemen, lijmen, polymeren, enz., Additieven voor anti-zink, verdikking en antislip, versterking van HCR en rtv-2k siliconenrubber, gebruikt om de vrije stroming te reguleren en als antiklontermiddel om poedereigenschappen te verbeteren, enz.
Test Item |
Standard |
Standardization |
Specific Surface Area BET(m2/g) |
115±15 |
GB/T 10722 |
pH Value in 4% dispersion |
3.7-4.5 |
GB/T 1717 |
Loss on Drying 2h@ 105℃(%) |
≤0.5 |
GB/T 5211.3 |
Loss on Ignition 2h@ 1000℃(%) |
≤2.5 |
GB/T 20020 |
SiO2 Content (based on ignited material)(%) |
≥99.8 |
GB/T 20020 |
Tamped density (based on material dried for 2h@ 105℃) (g/l) |
40-60 |
GB/T 5211.4 |
Carbon content (based on material dried for 2h@ 105℃) (%) |
0.6-1.2 |
GB/T 20020 |
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