The High Temperature Insulation Fiberglass Needle Felt is made of inorganic E glassfiber with the main components of silicone AI O and CaO. It is characterized by heat- resistance, tensile strength, tenacity fireproofing, anti-erosion, and good electrical insulation.The adoption of extreme tiny E glass fibres by particular needling leads to numerous thin holes so as to provide heat-insulation and sound-absorbency.
E-Glass needlemats are suitable for continuous use at temperatures up to 550°C, however tensile strength continues to reduce noticeably as temperatures increase above 400°C.
| Chemical elements of e-glass needled mat (weight %): | |
| SiO2 | 52~56 |
| Al2O3 | 12~16 |
| CaO | 16~25 |
| MgO | 0~6 |
| B2O3 | 8~13 |
| Na2O,K2O | 0~0.8 |
| TiO2 | 0~-0.4 |
| Fe2O3 | 0.05~0.4 |
