Silica sol for thermal-insulated fire-resistant glass

Fires cause immeasurable losses to people’s lives and property. In particular, for high-rise buildings, containing the fire within compartmentalized areas and preventing large-scale fire accidents is a key focus of firefighting efforts, ensuring the safety of people’s lives and property as well as social harmony and stability. 2023 The Ministry of Housing and Urban-Rural Development has released the new mandatory national standard. GB 55037—2022 General Code for Fire Protection of Buildings, and also... 2023 Year 6 Moon 1 Effective from the date of implementation, fire-resistant glass plays an important role in preventing the spread of fire. Fire-resistant glass is categorized as follows: A Thermal-insulating fire-resistant glass and C For fire-resistant partitions in residential buildings, it is best to use non-insulated fire-rated glass. A Thermal-insulated fire-resistant glass.

1. Silica sol is used in thermal-insulating fire-resistant glass.

When silicon sol is used in insulating fire-resistant glass, it can enhance both the barrier performance and safety performance of the fire-resistant glass.

Its high-temperature stability and superior thermal insulation properties make it an effective thermal insulation material capable of absorbing heat under high-temperature conditions and slowing down heat conduction.

Silica sol can also enhance the seismic resistance of fire-resistant glass, helping to prevent glass from shattering and fragments from flying around during a fire, thereby ensuring personnel safety.

High-temperature resistance and thermal insulation: As the core insulating material in inorganic composite fire-resistant glass, silica sol acts as a barrier during a fire, isolating high temperatures and flames and preventing the glass from melting under high-temperature conditions.

Structural Integrity and Safety: Fire-resistant glass produced using silica sol fire-retardant liquid is less likely to shatter under high-temperature conditions, thereby protecting evacuees from exposure to high temperatures, flames, and harmful gases in the event of a fire.

Optical Transparency and Visibility: Fire-resistant glass produced using silica sol fire-retardant solutions maintains good optical transparency even at high temperatures, ensuring clear visibility during fire emergencies and facilitating safe evacuation and emergency response procedures.

Performance features:

1. A solution with larger colloidal particle sizes enhances the fire-resistant glass's high resistance to thermal shock and overall structural stability.

2. Higher concentrations help reduce shrinkage and cracking during the drying and curing stages of fire-retardant liquid application.

         3. Excellent high-temperature resistance.
 

2. Technology of Insulated Fire-Resistant Glass

         Currently, the main technologies used in the market for producing thermally insulated fire-resistant glass are the pouring method and the slab-drying method.

Among these, the inorganic grouting fire-resistant glass technology involves injecting a proportionally mixed silicate solution into a multi-layer glass cavity that is sealed around the perimeter with specially designed flame-retardant strips. The solution then undergoes an in-situ reaction and solidifies into a transparent silicate gel, thereby producing composite fire-resistant glass. Currently, a new type of product available on the market... “ Nano silicon ”、 “ Crystalline silicon ” Fire-resistant glass belongs to this type of glass.

Silicate inorganic grouting fire-resistant glass achieves its fire-retardant and thermal-insulating performance by means of thermally induced foaming of a fire-retardant gel, which forms a porous inorganic thermal insulation layer. As can be seen from the principle behind its fire-retardant and thermal-insulating properties, the higher the solid content of the fire-retardant gel, the smaller and denser the bubbles generated after thermally induced foaming, and the better the thermal insulation effect will be. However, currently, the solid content typically achieved through this method is generally around... 40% ~ 45% Fire-resistant sealant has low hardness and high rheological properties. The thicker the fire-resistant sealant, the more likely it is to sag and cause glass deformation; the larger the glass size, the greater the risk. Due to its relatively high water content, fire-resistant sealant exhibits poor cold resistance. Most products on the market can only perform effectively in... -10 ℃ Of the above uses, only a very small number of products achieve cold-resistant performance. -30 ℃ Since the fire-retardant胶 (adhesive) should not be too thick, to extend the fire resistance time of the glass, we can achieve this by increasing the product’s thickness—specifically, by adopting a multi-layer glass structure with multiple layers of adhesive.

To put 3 piece 5 mm Thick glass, used for AB Made of silicone sealant 3 glass 2 The structure of the cavity, the thickness of the cavity is 5 mm The nano-silicon fire-retardant collagen solution is injected into the cavity, degassed, and then sealed. 80 ℃ The process is completed once the temperature on both sides is consistently maintained until the reaction results in a uniform, transparent state, thus producing nano-silicon fire-resistant glass. A schematic diagram of its structure is shown in Figure [insert figure number here]. 1。

Figure 1 “5 glass +5 glue +5 glass +5 glue +5 glass ” Schematic diagram of the nano-silicon fire-resistant glass structure