E-glass Needled Mat
The E-glass Needled Mat 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 followed by particular needling leads to numerous thin holes so as to provide heat-insulation and sound-absorbency.
The E-glass Needled Mat can be for application of avigation, spaceflight, seafaring, and attemperator with conduit on heat energy, air condition, chemical, build, also play down engine's noise,and any other occasion which needs heat insulation, fireproofing, acoustic insulation etc.
Thermal Conductivity of e-glass: 0.0300kcal/mhroC;
Density: 100kg/m3-200kg/m3;
Heat Resistance: below 800oC.
Chemical elements of E glass (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 |
Heat Insulation for e-glass needled mat (density 200kg/m3):
| Temperature(oC) | Thermal Conductivity (kcal/mhroC) |
| 25 | 0.030 |
| 100 | 0.037 |
| 200 | 0.048 |
| 300 | 0.058 |
| 400 | 0.076 |
| 500 | 0.094 |
| 600 | 0.112 |
| 700 | 0.16 |
Acoustic Insulation of e-glass
| Frequency | Acoustic Insulation Coefficient |
| 125 | 0.32 |
| 250 | 0.76 |
| 500 | 0.94 |
| 1000 | 0.96 |
| 2000 | 0.95 |
| 4000 | 0.98 |