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Introduction to the Characteristics of Silane Waterproofing Agent

Apr 13, 2021

When it interacts with the substrate, it releases ethanol and combines with the substrate to convert it into a silicone resin polymer, and finally forms a hydrophobic silicone resin film on the surface of the pores of the substrate to prevent water and harmful ions from penetrating The inside of the base material achieves the purpose of waterproof protection, improves the strength of building materials, prolongs the service life of the building, reduces the maintenance cost of the building, and shortens the waterproof construction period. This product is a new, environmentally friendly, efficient and ideal waterproof protection material in the international market.Silane waterproofing agent is a transparent, odorless, non-toxic and non-corrosive liquid.

1. Excellent penetration
Silane water repellent contains unique silane small molecules, which can quickly penetrate the inner capillary wall of the substrate. The chemical reaction speed is moderate, so it has excellent penetration capacity and penetration depth. The surface is treated with other waterproof material substrates.
2. Rigid and flexible waterproof layer
The hydrophobic silicone resin produced by the reaction of the silane water-repellent agent with the moisture in the air and the moisture in the substrate can be firmly and organically combined with the substrate to form a strong, rigid and flexible waterproof layer.
3. Excellent resistance to cracking
The silicone polymer formed by the reaction of the silane waterproofing agent with the substrate is a colloidal substance with excellent elasticity and tensile strength, can prevent cracking and can make up for 0.2mm cracks.
4. Unique self-healing ability
When the surface of the waterproof layer is damaged due to abnormal reasons (such as external force), the silane and moisture on the damaged surface continue to have a new reaction, so that the waterproof layer on the damaged surface can be repaired by itself.
5. Unique breathability
The treated substrate forms a surface tension much lower than that of water, and produces capillary reverse air pressure, forming a special waterproof layer that is unidirectionally ventilated to prevent moisture intrusion.
6. No coating film is left on the surface of the waterproof substrate
After the substrate is painted, the friction coefficient of the substrate is not changed, which helps to improve the strength of the substrate and maintain the original appearance, which is environmentally friendly, safe and healthy.

What is silane? What is the difference between the application of silane and silane and waterproof coating materials?
   The application range of silane is so wide, but there are still some questions. What is silane and the application of silane? Let's learn more about it today.
   We know that there are penetrating silane impregnating coatings in waterproof coatings, which have been widely used in the anti-corrosion construction of concrete in port terminals. With the development and application of silane, the application scope of silane has gradually evolved into the anti-corrosion of seaport engineering, traffic engineering, industrial facilities and civil buildings. Of course, it is also used in integrated circuit manufacturing, solar cells, coated reflective glass, etc.
   Silane does not decompose significantly within several months during storage. Because silane is almost insoluble in grease, it can be stored in a container with a grease-coated stopper. The chemical properties of silanes are much more active than alkanes and are easily oxidized. Spontaneous combustion can occur in contact with air. It does not react with nitrogen below 25°C, and does not react with hydrocarbon compounds at room temperature. It reacts very violently with oxygen, and will react violently even at a temperature of -180°C. Silane reacts violently with chlorofluorocarbon extinguishing agents, so such extinguishing agents cannot be used to extinguish fires. The explosion limit is 0.8%~98%.

Concrete will be corroded by water and chloride ions in the open air, which will affect the durability of the structure itself. Water will cause many structural diseases of concrete and is the carrier of many diseases. Therefore, the use of waterproof measures on the surface will play a great role in the anti-corrosion of concrete. Silane is a penetrating impregnant with excellent performance. It has a small molecular structure. The pore wall of deep-penetrating concrete reacts with the hydrated cement to form a polysiloxane interpenetrating network structure. Through a strong chemical bonding reaction, it is given to the concrete. The surface microstructure is hydrophobic for a long time and maintains the function of breathing and ventilation, which greatly reduces the intrusion of water and harmful chloride ions, and ensures that the concrete structure is protected from corrosion.

The difference between silane applied to concrete and other waterproof coating materials
Permeable organosilane surface protective coating is a kind of waterproof coating. The difference from other waterproof coatings is: the former uses the permeability of concrete to penetrate into a certain depth of the concrete surface for impregnation protection; while the latter completely blocks the pores or on the surface Close the pores. Therefore, it can not only greatly reduce the water absorption rate of concrete pores, reduce chloride ion erosion, prevent freeze-thaw damage, steel corrosion and mold growth, but also ensure long-term durability (alkali resistance, UV resistance).

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