What are the main components of water glass curing agent?

Water glass curing agent, its main components are particularly critical. Water glass, that is, the aqueous solution of sodium silicate, is widely used in many fields. And the product that solidifies it is commonly used as sodium fluorosilicate.

Sodium fluorosilicate is a white crystalline powder with stable properties and slightly soluble in water. It plays a significant role in the curing process of water glass. When sodium fluorosilicate meets the water glass solution, it slowly hydrolyzes and releases hydrofluoric acid. Hydrofluoric acid reacts with sodium silicate in water glass to form silica gel. The silica gel gradually condenses, causing the water glass to change from liquid to solid state, achieving the effect of curing. < Br >
The principle of the reaction is roughly as follows: sodium fluorosilicate ($Na_2SiF_6 $) hydrolyzes to produce hydrofluoric acid ($HF $), sodium fluoride ($NaF $) and silicic acid ($H_2SiO_3 $), and the silicic acid is further polycondensed to gradually form a silica gel with a network structure, and then solidify the water glass.

In addition to this sodium fluorosilicate, phosphoric acid, aluminum sulfate, etc. are also used as water glass curing agents. Phosphoric acid can react with the components in water glass to form a phosphate gel, causing it to solidify. Aluminum sulfate interacts with water glass by hydrolysis to produce an aluminum hydroxide colloid, which achieves the purpose of curing. However, in practical applications, sodium fluorosilicate is often the choice of curing agent due to its good curing effect and moderate price.

What is the scope of application of water glass curing agent?

Water glass curing agent is used in a wide range.

is used in construction works, and it is often used for foundation reinforcement. In case of soft soil foundation, water glass and curing agent are mixed with slurry and poured into the soil. The two are phased, which can increase the strength of the soil and reduce the compressibility, and the foundation is stable. Just like the ancient city building, the foundation is solid. This is also the basis for construction.

It is also used in underground waterproofing projects. If there is a risk of water leakage underground, water glass curing agent is used to make waterproof and plugging materials, which are applied to the leakage area to quickly coagulate and stop leakage. It is like the ancient water control, plugging its leakage, and water must not invade to keep the underground space dry. < Br >
In the field of refractory materials, it is also useful. Water glass is used as a bonding agent, and it is applied to the refractory raw materials together with the curing agent. After the curing process, the structure of the refractory material is dense and the refractory performance is improved. For example, the ancient caster is used in the kiln, and the refractory device on the kiln wall is formed, which can ensure the long-term use of the kiln.

Furthermore, in the foundry industry, water glass sand is hardened with a curing agent, which can be used as a mold. It can make the mold have good strength and collapse, which is convenient for the casting to be formed and subsequent cleaning. It is just like the ancient casting method. Good molding makes the material fine, which is a key part of the casting process.

As for anti-corrosion engineering, water glass curing agent can be equipped with anti-corrosion coating, which is applied to the surface of perishable materials to form a dense protective film, resist corrosion of corrosive media, and protect the treasure in ancient times. Covered with a strong film, the treasure will last for a long time.

From this perspective, water glass curing agent is useful in various fields such as construction, waterproofing, fire resistance, casting, and anti-corrosion.

How is the curing effect of water glass curing agent?

The curing effect of Guanshui Bai's curing agent is actually the most important in engineering construction. In the past, craftsmen used this curing agent in fortifications, and when they first applied it, they saw that it was integrated with water Bai, like water milk. Not long after, it can be seen that the water Bai is gradually condensing, and its quality is gradually strengthening.

At the beginning of curing, like the beginning of ice, the surface is initially condensed, and it is still slightly moist when touched, but it already has a sign of consolidation. After a while, the condensing force gradually increases, and the water Bai's body becomes more and more compact, just like a stone is about to become. When it is semi-cured, its shape is already solid, although it has not reached the state of full strength, but the external force is added, only slightly deformed, and it has considerable strength.

As for the full solidification, it is as strong as gold and stone. The original state of the water has changed greatly, and it has become a solid body, which can bear load. When you hit it, the sound is like gold and stone hitting each other, crisp and solid, and it is no longer as soft as when it is not solidified. It is difficult to crack it when pressed with heavy objects, which shows that its solidification effect is remarkable. It can change the water from a loose state to a solid thing, which can be used for many construction things, such as foundation building and wall building, which can increase its stability and prolong its years, so that it can stand for a long time in the wind and rain, and it is not easy to fall. In this way, the curing effect of the water-based curing agent is actually the ability to barter, which is a solid work and a good help for the cause of construction.

What is the use of water glass curing agent?

The water condensation film curing agent is also used to make the water condensation film solidify quickly. The method of use should be in the following order.

First, clean the surface of the utensils to be attached to the water condensation film, remove dust and grease, and ensure that it is smooth. Take water and cloth, wipe it lightly, and wipe it dry with a dry cloth, leaving no water stains.

Second, open the packaging of the water condensation film and the curing agent. When taking the curing agent, be careful not to overflow. Pour an appropriate amount of the curing agent on the adhesive surface of the water condensation film, and apply it slowly and evenly with a special coating tool. When applying, the force should be uniform, so that the curing agent can cover the film surface without thickening or vacancies. < Br >
Then, apply the water-condensed film coated with the curing agent to the surface of the utensil. Start from one end, slowly put it down, and at the same time, use a soft scraper to gently scrape from the film to the other end to make the film and the utensil close, drive out the air in between, and do not leave bubbles.

After that, let it stand for a while to make the curing agent work. At this time, do not touch the water-condensed film, and wait for it to solidify. When standing, it varies depending on the properties of the curing agent and the ambient temperature and humidity, and probably takes several hours to an hour.

When the film is solidified, its coating status can be observed. If there are side seams that are not closed or bubbles remain, a slight remedy can be applied. If you use a scraper to scrape again, or use a needle to pick through the bubbles, and then smooth them.

When using this curing agent, pay attention to safety. The curing agent contains many chemicals, so do not touch the eyes, mouth, and skin. If you accidentally touch it, rinse it with water quickly, and seek medical attention for those who are serious. And after use, seal the curing agent and place it in a cool, dry, and inaccessible place to prevent accidents. In this way, you can make good use of the water condensation film curing agent, so that the water condensation film is firmly covered and the protective device is comprehensive.

How is the compatibility of water glass curing agent with other materials?

The compatibility of water glass curing agent with other materials is related to the effectiveness of many processes and applications, and cannot be ignored.

Water glass is an aqueous solution of sodium silicate, which is widely used in various fields such as industry and construction. Its curing agent plays a key role, which can make water glass change from liquid to solid, and obtain the required strength and performance. However, when different curing agents coexist with various materials, their compatibility is different.

In case of alkaline materials, the compatibility of water glass curing agent with them is good. Because water glass itself is alkaline, when it encounters alkaline materials, its chemical properties are similar, and the reaction is relatively slow and stable. For example, in some building materials, it can be mixed with alkaline mineral powder to synergistically improve the overall strength and durability of the material.

When it comes to acidic materials, the situation is different. Acidic substances are easy to react with silicate ions in water glass, or cause precipitation, gelling and other phenomena, breaking its original structure and properties. In case of strong acid, water glass solidifies rapidly. This curing is not a desired and controllable state, and the properties of the reaction material deteriorate, making it difficult to use.

As for organic materials, compatibility is also complicated. When some organic resins are mixed with water glass curing agents, they cannot be uniformly dispersed due to polar differences or phase separation, which affects the comprehensive properties of the materials. However, some specific organic additives, when properly prepared, can improve the toughness of water glass after curing and enhance its bonding force with organic materials.

When the metal material is in contact with the water glass curing agent, some metal ions may catalyze the curing reaction of the water glass, or change the reaction rate and product structure. In the application of metal anti-corrosion coatings, if the compatibility is not good, the coating adhesion is poor, easy to peel off, and the protective effect is lost.

Therefore, in order to observe the compatibility of the water glass curing agent with other materials, it is necessary to study the chemical properties and reaction mechanism of the material in detail. After many experiments, its physical properties, chemical stability and other indicators are measured to obtain reliable conclusions, which provide a solid basis for practical application.