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LUDOX® colloidal silica forms strong ionic and hydrogen bonds with metal oxides and fibrous materials. These bonds are thermally stable and chemically inert, making them especially useful binders for the following products.
The silica particles in LUDOX® also adhere well to many surfaces and bond well to functionalized polymers via ionic and hydrogen bonding. Once applied to a surface, the silica particles provide an increased coefficient of friction and introduce antiblocking properties that are useful for the applications listed below.
Silica particles functional as pozzolanic additives to strengthen cementitious materials, such as concrete. This is achieved effectively using colloidal silica, where the small silica particles penetrate deeply within the pores of concrete to react with free lime, making it ideal for concrete densifier formulations.
As mentioned, LUDOX® colloidal silica is available in grades with anionic sol charge, as well as cationic sol charge. When added to solutions, LUDOX® particles bond ionically with particles of the opposite charge and fall out of suspension. This makes LUDOX® an excellent flocculant for the following applications.
The characteristics of LUDOX® colloidal silica and its usefulness as a binder and surface modifier are further highlighted in the short video below.
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