AEROSIL R972 PDF

Physico-chemical data of hydrophobic fumed silica. Grades. BET surface area [m 2/g]. Loss on drying [%]. pH value. Carbon content [%]. AEROSIL® R ±. AEROSIL® R is a fumed silica aftertreated with DDS (Dimethyldichlorosilane ). It is used in silicone rubber and silicone sealants, paints and coatings. Applications: Silicone rubber and silicone, Sealants, Paints and coatings, Printing inks and toner, Adhesives, Cable compounds and gels, Plant protection.

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The adsorption isotherms of isobutene on a hydrophobic silica, Aerosil R, have been measured, and the isosteric and integral heats of adsorption and the integral entropy of adsorption have been calculated. A comparative study has been made of partial dehydroxylation by heating and by methylation. In the former, the heat of adsorption at low coverage decreases by 2. In the latter, the heat of adsorption remains constant, while the quantity adsorbed on the monolayer decreases, and is proportional to the part of the surface that is free of methyl groups and contains hydroxyl groups.

A model that represents the methylated groups of the surface of Aerosil R is proposed, and it is suggested that the adsorption of isobutene takes place in the region where there are hydroxyl groups.

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[Effect of Aerosil and Aerosil R on the water absorption ability of powdered raw materials].

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AEROSIL® R by Evonik Resource Efficiency GmbH, BL Coating Additives – Paint & Coatings

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Adsorption of isobutene on partially hydrophobized aerosil. Back to xerosil navigation Download options Please wait Adsorption of isobutene on partially hydrophobized aerosil E. Reproduced material should be attributed as follows: For reproduction of material from NJC: For reproduction of material from PCCP: For reproduction of material from PPS: For reproduction of material from all other RSC journals and books: Search articles by author Eliana Valencia.

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