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How to make the tempered glass safer?

  • Author:Jimy glass
  • Source:Original
  • Release on :2017-02-26



Tempered glass in the absence of mechanical external force under the burst, called self-blew. The expansion of nickel sulfide inside the tempered glass is the main cause of the toughening of tempered glass, which is mainly brought into the impurities in the glass raw material. There are some nickel sulfide particles after a period of time its crystal structure from the α state to the β state, in this transition process, the size of nickel sulfide particles produce a greater degree of expansion. This volume expansion process leads to a strong internal stress of the tempered glass, resulting in the tempered glass blew. State regulations, tempered glass from the burst rate of 3% -0.3% range.

Tempered glass is a safety glass recognized in the regulations and is widely used in places where mechanical strength and safety requirements are high, such as glass doors, building curtain walls, facade windows, indoor partitions, furniture, near heat sources and hot and cold shocks of the partition. The characteristics of the tempered glass determine the blew is unavoidable, and can not predict the blew time and conditions, therefore, in order to prevent the tempered glass blew from the hazards caused in the glass processing and installation process will often take some measures or methods, to reduce the loss of tempered glass blew. 

1.Heat soak treatment:
The tempered glass is placed in a heat soak furnace for heating, heat preservation and cooling treatment to stabilize the nickel sulfide within the tempered glass so that the internal stress of the glass travels to balance to achieve the purpose of reducing the rate of blasting. Advantages: self-blew rate greatly reduced, low cost, do not change the glass specifications and layout. Inadequate: can not completely eliminate blew, and stress will be reduced accordingly.

2.Laminated glass:
In the glass folder between the PVB interlayer, made by high temperature and high pressure processing. PVB film toughness is very good, laminated glass in the external force fragmentation, can absorb a lot of impact energy and make it quickly decay, so laminated glass is difficult to breakdown, to maintain excellent integrity. This makes the use of laminated glass buildings in the case of explosion, windstorms, earthquakes, etc., even if the glass fragmentation, can still remain in the doors and windows within the framework of the protection of buildings inside and outside the staff from the splash of glass debris hazards, Other foreign objects are also difficult to cause damage to the interior. The downside is:
1) glass weight thickness increases building load and load;
2) fire is not conducive to escape and rescue;
3) increase construction costs. The following are the same as the " 
3.Pasting film glass:
High-performance polyester film on glass. Polyester film commonly known as safety explosion-proof membrane, glass for various reasons of fragmentation, you can stick to the glass fragments to prevent splashing, to protect the building inside and outside the staff from the splash of glass debris hazards, wind and rain and other foreign matter is also difficult to cause damage to the interior The The safety explosion-proof membrane can be attached to the rim system along with the organic glue to form a glass film protection system to prevent falling. Advantages: easy processing, do not change the glass specifications and layout. Inadequate: increase construction costs.

4.Enclosure design:
In a crowded place set up facilities such as fence, reduce the damage from the glass broken.

5.Ultra-white tempered glass:
Good thermal stability, high strength, low burst rate (close to 0), the use of safe, high transmittance, good permeability, high-end, high technical content, wide range of applications.


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