Topic
Precipitated silica
About: Precipitated silica is a research topic. Over the lifetime, 1401 publications have been published within this topic receiving 20992 citations.
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TL;DR: In this paper, a polyurethane/silica (PU/SiO 2 ) hybrid material was developed via the chemical reaction between urethane groups of PU prepolymer and hydroxyl groups at the surfaces of silica.
29 citations
TL;DR: In this paper, the elastic response of natural rubber (NR) compounds filled with silica from fly ash particles (FASi) and commercial precipitated silica (PSi), through a dynamic rebound test, was investigated.
Abstract: This article investigated the elastic response of natural rubber (NR) compounds filled with silica from fly ash particles (FASi) and commercial precipitated silica (PSi), through a dynamic rebound test. The effects of silica content and initial drop‐height on the height and number of rebounds, dynamic stiffness, and the energy loss were of interest. The results suggested that the unfilled NR vulcanizates exhibited a greater elastic response than the FASi and PSi‐filled vulcanized composites. For given silica contents, the NR compounds with FASi had better elastic response than those with PSi, where the elastic response decreased with an increase in silica content. The greater the silica contents, the higher the dynamic stiffness of the composites. The initial drop‐height had no effects on the elastic response change for the unfilled NR compound, but resulted in an increase in the energy loss for the silica‐filled NR composites. The differences in the elastic responses for the NR compounds filled with sili...
29 citations
Patent•
16 Jul 1973
TL;DR: A visually clear toothpaste containing a particulate polishing agent, characterised in that the polishing agents is synthetic hydrated precipitated silica, is described in this article.
Abstract: A visually clear toothpaste containing a particulate polishing agent, characterised in that the polishing agent is synthetic hydrated precipitated silica.
29 citations
TL;DR: The suitability of using precipitated silica (PS) from the burning of rice husk was investigated to improve the geotechnical engineering properties of a black cotton soil as mentioned in this paper.
Abstract: The suitability of using precipitated silica (PS) from the burning of rice husk was investigated to improve the geotechnical engineering properties of a black cotton soil. A laboratory experimental program consisting of series of specific gravity, Atterberg limits, compaction, California bearing ratio (CBR), unconfined compression and consolidation tests was conducted on the untreated and PS treated soil samples. The application of PS to the soil significantly changed its properties by reducing its plasticity and making it more workable, improving its soaked strength, and increasing its permeability and the rate at which the soil gets consolidated. An optimal PS content of 50%, which provided the highest soaked strength, is recommended for the improvement of the subgrade characteristics of the BC soil for use as a pavement layer material.
29 citations
Patent•
10 Jul 2001TL;DR: In this article, a process for modification of the surface of a silica with a silane compound is described, which involves mixing an aqueous suspension of precipitated silica particulates with a Silane compound which is dissolved in an organic solvent in the presence of a phase transfer catalyst.
Abstract: A process for the modification of the surface of a silica with a silane compound comprising mixing an aqueous suspension of precipitated silica particulates with a silane compound which is dissolved in an organic solvent, in the presence of a phase transfer catalyst.
29 citations