Introduction to water glass:
Commonly known as saponin, it is a water-soluble silicate whose aqueous solution is water glass. Its chemical formula is R2O·n SiO2, wherein R2O is an alkali metal oxide, and n is a ratio of the number of moles of silica to alkali metal oxide, which is called the modulus of water glass. The water glass commonly used in construction is an aqueous solution of sodium silicate (Na2O.n SiO2).
Basic performance of water glass:
Strong adhesion, high strength, good acid resistance, heat resistance, poor alkali resistance and water resistance.
Water glass traits:
Colorless orthogonal bipyramidal crystal or white to off-white block or powder. Can be weathered. Six molecules of crystal water were lost at 100 °C. Soluble in water, soluble in dilute sodium hydroxide solution, insoluble in ethanol and acid. 40-48 ° C melting point. Low toxicity, half lethal dose (rat, oral) 1280mg/kg (no crystal water).
Water glass storage method:
The seal is stored in a cool, dry place.
Use of water glass:
A. Applying the surface of the material to improve its weathering resistance. Impregnating or painting porous materials such as clay brick, cement concrete, Portland concrete, stone, etc. with water glass with a density of 1.35g/cm3 can improve the compactness and strength of the material. , impermeability, frost resistance and water resistance.
B. Reinforced soil The water glass and calcium chloride solution are alternately injected into the soil, and the generated silicic acid gel is in a humid environment, and the soil is in an expanded state due to absorption of soil moisture, thereby consolidating the soil.
C. Formulating a quick-setting waterproofing agent.
D. Repairing the cracks in the brick wall, the water glass, the granulated blast furnace slag powder, the sand and the sodium fluorosilicate are mixed in an appropriate proportion, and then directly pressed into the crack of the brick wall to play the role of bonding and reinforcing.
Water glass production method:
The production method of sodium silicate is divided into two methods: a dry method (solid phase method) and a wet method (liquid phase method).
1. Dry production is to mix quartz sand and soda ash in a certain proportion and then heat it to about 1400 °C in a reverberatory furnace to form molten sodium silicate.
2. Wet method produces quartz rock powder and caustic soda as raw materials, and reacts in steam in a high pressure steamer at 0.6-1.0 Mpa to directly produce liquid water glass. Microsilica powder can produce sodium silicate with a modulus of 4 instead of quartz.
Water glass use:
1. Paint the surface of the material to improve weather resistance
2. Strengthen the soil
3. Preparation of quick-setting waterproofing agent
4. Formulating acid-resistant gel, acid-resistant mortar and acid-resistant concrete
5. Formulating heat-resistant gel, heat-resistant mortar and heat-resistant concrete
6. Anti-corrosion engineering application
7. Casting type (core) bonding agent
The main features of water glass:
1. High adhesion and strength
2. Good acid resistance
3. Good heat resistance
4. Low alkali resistance and water resistance
CA Temporary Fence Introduction:
Temporary Fence is also called
Construction Fence,Removable Fence and Portable Fence. This type was
very popular in Canada, the United States, and some other America
countries.
It is quick to be set up and easy to move and is ideal for restricting
access or containing a site and is commonly seen at construction sites,
public events, as a dog run, or anywhere crowd control is important.
It offers the benefits of affordability and flexibility.
Ca Temporary Fence,Temporary Fencing Panel,Construction Temporary Fence,Temporary Construction Fence Panel
HeBei Bosen Metal Products Co.,Ltd , https://www.bosenfence.com