Effect of complex thinning composition based on oxyethylidenediphosphonic acid, liquid glass, and soda on the structural–mechanical properties of a clay suspension

Mozgovoi, G. V.; Бутман, М. Ф.; Kozlovskaya, G. P.; Nikolaeva, Elena V.

doi:10.1007/s10717-011-9369-x

Cited by 4 publications

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“…The viscosity and thixotropy of the clay and kaolin suspensions are taken as the response functions (by analogy to [5,6] for Stephan Schmidt 13250 clay).…”

Section: Casting Slip Preparationmentioning

confidence: 99%

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Technological Properties of Ceramic Slip with Oxyethylidenediphosphonic Acid in a Complex Deflocculent

2015

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The composition of a complex deflocculent for ceramic slip based on oxyethylidenediphosphonic acid (OEDPA) and components of a conventional thinner containing liquid glass and soda is found by trial and error. A comparative study is performed of the effect of the proposed deflocculent and the deflocculent Reotan SL (Lamberti Co.) on the rheological properties of the ceramic slip modified by them and the physical-mechanical properties of the castings. The deflocculent containing OEDPA makes it possible to minimize the slip thixotropy for which the casting rate of the samples, characterized by higher shrinkage and characteristics, remains high.

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“…The viscosity and thixotropy of the clay and kaolin suspensions are taken as the response functions (by analogy to [5,6] for Stephan Schmidt 13250 clay).…”

Section: Casting Slip Preparationmentioning

confidence: 99%

“…In a previous work we proposed a new deflocculent based on oxyethylidenediphosphonic acid (OEDPA, empirical formula C 2 H 8 O 7 P 2 ) in combination with soda and liquid glass [5,6]. It was found that such a ternary system gives a clay suspension with lower viscosity and thixotropy in a wide range of concentrations.…”

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confidence: 99%

Technological Properties of Ceramic Slip with Oxyethylidenediphosphonic Acid in a Complex Deflocculent

2015

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Complex Thinner Based on Soda, Liquid Glass and Oxyethylidenediphosphonic Acid in Ceramic Casting Technology

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Wetting of Solid Surfaces by Solutions of Modifying Additives

Slyusar

Uvarov

2014

Glass Ceram

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The results of investigations of the effect of a complex additive containing sodium tripolyphosphate and resorcinol furfural oligomer on the wetting of solid surfaces are presented. It is shown that the wetting energy of an aluminum plate by solutions with a complex additive is much higher than the total energy of wetting by solutions containing separate components of a complex. The complex additive studied increases the wetting of an Al 2 O 3 surface, which decreases the free surface energy at the solid -solution interface.The production of modern construction articles is based on the preparation of high-quality initial material. One quality indicator for initial suspensions (ceramic slips and others) is their aggregative stability, i.e., conservation of the dispersity of the particles. Aggregative stability requires a stabilizer and good wetting of the surface of the particles of the disperse phase of the dispersion medium, since this allows an elastic solvation shell preventing particles from coagulating to form on the particle surfaces.Different additives are used as stabilizers. Our investigations [1 -5] as well as existing publications [6 -8] show that for many complex mineral suspensions, which ceramic slips and clay suspensions are, it is more effective to use complex stabilizing additives containing several components. This makes it possible to expand the range of possibilities for purposeful control of the properties of mineral suspensions and the properties of articles based on them.The angle of contact usually serves as a measure of wetting. The magnitude of this angle depends only on the nature of the substances participating in wetting, i.e., on the surface tension at the corresponding phase interfaces. One problematic question is the determination of wetting of powdered materials, for which the direct measurement of the contact angle presents significant difficulties. For this reason, model systems comprising the compounds SiO 2 and Al 2 O 3 were chosen for the present investigations. These compounds as well as the products of their interaction form the bulk of the minerals and rocks which comprise the initial materials for ceramic materials and articles. The investigation of the properties of mineral suspensions based on the chosen compounds is of theoretical and practical interest.We studied the wetting energy of solid surfaces wet by a solution containing a complex modifying additive making it possible to regulate the rheological properties of kaolin suspensions. The components of this additive are sodium tripolyphosphate (STPP) and resorcinol furfural oligomer SB-RF [3].Investigations to determine the wetting energy on different surfaces showed that the wetting energy of Al 2 O 3 plates wetted by solutions with a complex additive is much higher than the total wetting energy of an Al 2 O 3 surface wetted by solutions of SB-RF and STPP separately (Fig. 1). That is to say, the phenomenon of synergism is observed: the action of separate components is intensified when they are introduced together.S...

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Effect of complex thinning composition based on oxyethylidenediphosphonic acid, liquid glass, and soda on the structural–mechanical properties of a clay suspension

Cited by 4 publications

References 1 publication

Technological Properties of Ceramic Slip with Oxyethylidenediphosphonic Acid in a Complex Deflocculent

Technological Properties of Ceramic Slip with Oxyethylidenediphosphonic Acid in a Complex Deflocculent

Complex Thinner Based on Soda, Liquid Glass and Oxyethylidenediphosphonic Acid in Ceramic Casting Technology

Wetting of Solid Surfaces by Solutions of Modifying Additives

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