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Glass wool adopts the most advanced centrifugation technique to fiber glass fibrosis, which is made of quartz sand , borax and other raw materials after 1400 ℃ high temperature melting. And then a certain amount of binder is added. Finally, it needs consolidation curing process. Such products has large amount and very thin glass fiber inside. Its total surface area is very large also, so as to strengthen the resistance of the air, making the air unable to flow and eliminating the air convection heat transfer; Similarly, huge friction decays vibration of the sound propagation carriers - air quickly, which ensures glass wool's good thermal insulation and sound absorption effect. It is also good material for sound absorption and noise reduction in steel structure building. Main performance: 1. Good heat insulation performance under high or low temperature conditions. 2. No burning and produce of harmful gases, identified as "statutory non-combustible material" by countries. 3. Uniform elastic restoring force. 4. Low, intermediate and high frequency sound absorption performance, good noise reduction effect. 5. Small moisture absorption rate in wet or humid conditions. 6. Small linear expansion coefficient. 7. Aging rate is low. It can maintain original performance after long-term use. 8. Good processing performance. Heat preservation performance comparison of glass wool with other heat preservation material: The following data is thickness comparison of glass wool felt 12kg/m3-50mm with various same heat insulation effect construction materials.
Glass Wool
Reinforced concrete
Sand masonry adobe
Wood (pine, wood grain)
Flat glass
50mm
1500mm
700mm
180mm
650mm
Glass wood
Rock wool
Polyurethane
Benzene board
Thermal insulation properties
0.035-0.040w/m.k
0.04-0.45w/m.k
0.035-0.04w/m.k
0.004-0.045w/m.k
Fireproof performance
A class non-combustible, no toxic smoke
A class non-combustible, no poisonous gas
B2, easy to produce toxic smoke
B3, easy to produce poisonous gas
Sound absorption performance
Optimal
NO
Construction performance
Light weight, easy site operation
Heavy, more dust and complex site operation
Complex site operation
Easy site operation
Chemical stability
Stable, anti-aging and corrosion
Stable
not stable, easy aging and corrosion
soluble in ethyl ether, acetone and other organic solvents
Waterproof performance
Good waterproof: after drying, water performance and shape remain unchanged
Poor waterproof, pulverization in water
General waterproof performance
Good waterproof performance
Economic performance
Low cost, good economic performance
Low cost, high economic performance
High cost and high price
Above data can prove that glass wool far more better thermal insulation performance than other materials. Technical parameters All kinds of technical parameters of glass cotton products: Steel structure with glass cotton JHY - M10.Basic parameters:
Test standard
Technical parameters
Apparent density
GB/T5480.3
≧10kg/m3
Fiber mean diameter
GB/T5480.4 Microscopy way
≦7.6μm
Shot content
GB/T5480.5
0%
Combustion performance
GB/8624 BS476
Grade A level 0 (non-combustible materials)
Hot load thermal shrinkage temperature
GB/T11835-1998
≧250℃
Heat conductivity coefficient
GB/T10294
≦0.058w/m.k (Average test temperature)
Hydrophobic rate
GB/T10299
≧98%
Different thickness heat resistance
Thickness mm
Heat resistance (m2.k/w)
50.0
1.0
75.0
1.3
100.0
1.6
120.0
2.0
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