Silica Fume For Water Glass

Silica Fume For Water Glass

What is water glass? Water glass is a mineral binder. Its chemical formula is R2O.nSiO2, wherein R2O is an alkali metal oxide, n is the ratio of the number of moles of silica and alkali metal oxide, and is called the friction number of water glass. The water glass commonly used in construction...

Send InquiryChat Now

Product Details

What is water glass?

Water glass is a mineral binder. Its chemical formula is R2O.nSiO2, wherein R2O is an alkali metal oxide, n is the ratio of the number of moles of silica and alkali metal oxide, and is called the friction number of water glass. The water glass commonly used in construction is an aqueous solution of sodium silicate.


The role of silica fume in water glass

Microsilica can replace quartz ore to produce a water glass with a modulus of 4


Water glass can be divided into sodium water glass and potassium water glass according to the type of alkali metal, and its molecular formulas are Na2O.nSiO2 and K2O.nSiOz.

The coefficient n in the formula is called water glass module, and is silicon oxide in water glass and Molecular ratio (or molar ratio) of alkali metal oxides. Water glass modulus is an important parameter of water glass, generally between 1.5-3.5. The larger the modulus of the water glass, the harder the water glass is, the harder it dissolves in water.

When n is 1, it can be dissolved at room temperature. When n increases, it needs hot water to dissolve. When n is greater than 3, it takes 4 atm or more steam to dissolve. The larger the modulus of the water glass, the greater the content of silica, the viscosity of the water glass increases, it is easy to decompose and harden, and the adhesive force increases.
    

Water glass production has two methods: dry and wet methods:
 The dry process uses quartzite and soda ash as raw materials. After grinding and mixing, it is melted at a temperature of 1300-1400° C. in the melting furnace. The solid water glass is produced by the following reaction and dissolved in water to obtain liquid water glass.
     Wet-process production uses quartzite powder and caustic soda as raw materials. In an autoclave, autoclave reaction is performed under atmospheric pressure of 2-3 atmosphere to produce liquid water glass directly.
    Microsilica can replace quartz ore to produce a water glass with a modulus of 4


The main character of  water glass which using silica fume
Water glass which using silica fume

Water Glass Atlas which using silica fume


(a) Higher adhesion and strength
The main component of the water glass which using silica fume after hardening is a silicone gel and a solid, and has a large specific surface area and therefore has a high adhesive force. However, the quality of the water glass which using silica fume itself, the properties of the batch material, and the maintenance of the construction have a significant effect on the strength.


(b) good acid resistance
It can resist almost all inorganic and organic acids other than hydrofluoric acid (HF), hot phosphoric acid and higher fatty acids.


(c) good heat resistance
The silica reticulated skeleton formed after hardening has a very small decrease in strength at high temperatures. When the heat-resistant and refractory aggregates are used to formulate water glass which adding silica fume mortar and concrete, the heat resistance can reach 1000°C. Therefore, the heat resistance of the water glass which using silica fume concrete can also be understood as mainly depending on the heat resistance of the aggregate.


(d) poor alkali resistance and water resistance
Because water and alkali are both soluble in alkali, water glass cannot be used in an alkaline environment. Also, NaF and Na2CO3 are soluble in water but not water-resistant, but hardened water glass which using silica fume can be pickled with medium-strength acid to improve water resistance.


Company introduction

Winitoor's recent products are 85D,90D,92D,95D and 92U,95U,96U.D is for densified material(densified silica fume) and U is for undensified material(undensified silica fume).Weclome you to contact us at any time.




Should you have any interest in our silica fume for water glass, welcome to contact us. With over 8 years experience in this field, our factory pays high attention to quality. Please rest assured to buy. Low price, fast delivery and excellent service are offered.
Hot Tags: silica fume for water glass, China, factory, buy, low price
Related Products

Inquiry

  • *Your Name:
  • *E-mail:
  • Content: