Fire Resistance Rock Wool Mineral Wool Sandwich Panel

Ripple

Square wave

Flat

Fire Resistance

Thermal Insulation

What is the Acidity Coefficient ?

The acidity coefficient is a kind of key comprehensive parameter signifying the high temperatureviscosity, fiber forming performance and solubility of mineral wool. The defination of acidity coefficient is: (SIO2+AL2O3)/(CaO+MgO).

In general, the acidity coefficient of slag wool is about 1.1, and the acidity coefficient of rock wool is about 1.8. The slag wool has a strong corrosive effect on metals due to its low acidity coefficient and high CaO and MgO contents.

Comparison picture of hydrophobicity test

The test shows that DUOWEI Fire resistance rock wool mineral wool sandwich panel possesses higher hydrophobicity comparing with conventional rock wool sandwich panel.

The conveyance of rock wool is a major highlight in the whole production line. The rigidity of sandwich panels increases greatly, the flatness and aesthetics of sandwich panels are guaranteed through loading, lifting, cutting, conveying, lateral moving, 90°rotation, arraying, edge milling etc. The rock wool core strips are cross-butted, thus the strength and tear resistance of sandwich panel increase greatly.

After intensive mixing under certain pressure, components of chemical materials are sprayed onto the upper and lower steel sheets evenly.The guaranteed spraying thickness, the widened bonding surface between rock wool and steel sheet as well as the stronger bond enhance the strength of sandwich panels greatly.

The application of double crawler machine changes the traditional production process in which rolls keep a linear contact with steel sheets. By this way, rolls keep a plane contact with steel sheets, run synchronously with sandwich panels and solidify completely in double crawlers, thus the flatness of sandwich panels and the bonding stability between core materials and steel sheets are ensured.

1. After a 90°rotation, the core material is vertical to the steel sheet, thus the panel's compressive strength increases greatly.
2. The vertical distribution and cross butting of core materials prevent the butting gap among core materials, thus the whole rigidity increases greatly.
3. The imported high-effi ciency binder with excellent fi reproof performance is used on new products, and the new product binder is coated onto the steel sheet through the spraying way with a dosage up to 600g/m2 . The even and reliable bond makes the bonding rate nearly reach 100%.

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