Engineered mineral fibres (Note Q)
Due to their shape, Lapinus fibres provide reinforcement and dimensional stability to a composite. The superior performance of Lapinus engineered fibres compared with other mineral fibres is a result of their surface treatment, which ensures chemical or physical bonding between the fibres and the matrix material.
Improved thermal resistance and heat stability
The extremely high melting temperature, a result of our unique chemistry, gives Lapinus mineral fibres excellent performance at elevated temperatures, exceeding other fibrous materials such as cellulose, slag, glass and aramid.
Mechanical resistance
As a result of Lapinus fibres’ excellent bonding qualities, the mechanical resistance of the composite increases significantly. This creates increased performance and an extended life span for the end product.
Fibre characteristics | |||
| Parameter | Average/Tolerance | ||
| Fibre index: | Up to 99.9% | ||
| Fibre diameter (num. av.) | Approx. 5.5 micron | ||
| Specific surface area | Approx. 0.20 m2/g | ||
| Fibre length | 125-650 micron | ||
| Colour | Grey/green or off-white | ||
| Hardness | 6 Moh | ||
| Melting point | Roxul®1000 > 1000 ºC/CoatForce® > 700 ºC | ||
| Ignition loss | Max. 0.3%wt | ||
| Moisture content | Max. 0.1%wt | ||
| Specific density | 2.75 ± 0.15 g/cm3 | ||
Chemical composition of high-alumina low-silica fibres | ||
| Lapinus Roxul®1000 chemistry Rockbrake®, Rockseal®, Rockforce® typical average values (%) | Lapinus CoatForce® chemistry typical average values (%) | |
| SiO2 | 41 | 38 |
| Al2O3 | 20 | 21 |
| TiO2 | 2 | <1 |
| Fe2O3 | 6 | 1 |
| CaO + MgO | 25 | 36 |
| Na2O + K2O | 4 | 2 |
| Other oxides | 2 | 2 |
Chemical Abstract Service (CAS) Registry Number | ||
To see the Engineered mineral fibre production process click here.
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Technical insulation