FIELD: chemistry.
SUBSTANCE: invention can be used in chemical industry. Pyrogenic silicon dioxides with a modified surface, which are highly structured and are doped with potassium oxide, have the following characteristics: BET surface area 25-400 m2/g, average size of primary particles 5-50 nm, pH 3-10, carbon content 0.1-10 wt %, potassium oxide content 0.000001-40 wt %. Such silicon dioxides can be used as filler material in composite silicon rubber.
EFFECT: achieving high breaking strength and transparency of silicon rubber compositions and low viscosity thereof.
5 cl, 8 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| SILICON DIOXIDES WITH MODIFIED SURFACE | 2007 |
|
RU2438973C2 |
| HYDROPHOBIC SILICON DIOXIDE AND ITS APPLICATION IN SILICON RUBBER | 2005 |
|
RU2358908C2 |
| MIXED OXIDE POWDER CONTAINING ALKALI METAL OXIDE, AND SILICON RUBBER CONTAINING SAID POWDER | 2006 |
|
RU2395449C2 |
| RUBBER MIXTURES | 2016 |
|
RU2734414C2 |
| PROCESSING AID FOR THERMOPLASTIC POLYURETHANES | 2009 |
|
RU2520441C2 |
| METHOD OF OBTAINING AND USE OF MODIFIED SILANE OXIDE OR SILICA FILLER | 2003 |
|
RU2326145C2 |
| SILOXANES FUNCTIONALIZED WITH AZOCARBONYL | 2015 |
|
RU2688516C2 |
| RUBBER MIXTURE | 2012 |
|
RU2612148C2 |
| SILICON-CONTAINING AZODICARBOXAMIDES, PRODUCTION AND USE THEREOF | 2016 |
|
RU2727928C2 |
| HYDROPHILIC SILICON DIOXIDE AS FILLING AGENT FOR SILICONE RUBBER COMPOSITIONS | 2009 |
|
RU2516830C2 |
