Pipe insulation material:
The surface of the fiberglass needle mat can apply with different materials to use in variety insulation product such as fiberglass cloth, silicon cloth, foil or plastic, and can be used as the heat insulation、protection for under ground pipe at power station, petrochemical industry.
Fibreglass Needle Mat Property
Thermal and Optical Properties | Fiberglass is inorganic fiber and will not combustion |
Thermal Expansion Coefficient：4.8*10-6cm/cm/℃ |
Specific heat：0.19cal/g℃ |
Thermal conductivity Coefficient： 0.040w/cm.k |
Heat Resistant Temp: 700℃ |
Conversion Rate（25℃）：1.55 |
Mechanical Properties | Fiberglass has high tensile strength and good stability in length |
Tensile Strength：350kg/mm2 |
Elastic Modulus：7300kg/mm2 |
Horizontal Tensile Strength：35.6N/50mm |
Vertical Tensile Strength：97.2N/50mm |
Conductance | Fibreglass have good electric insulation |
Permittivity：102Hz104Hz-6.32, 1010Hz-6.11 |
Loss Tangent: 102Hz-0.0042, 102Hz-0.006 |
Volume Resistivity：1010Ωcm, |
Corrosion | Fibreglass will not absorb water, will not contribute to metal corrosion and will not decay |
Fiberglass Chemical Composition（Weight％） |
SiO2 | Al2O3 | CaO | MgO | B2O3 | Impurity |
R2O | Fe2O3 | Other |
54.1±0.5 | 14.6±0.4 | 16.6±0.3 | 4.6±0.3 | 8.8±0.5 | ＜0.8 | ＜0.5 | Allowance |
Fiberglass Thermal Conductivity：
Temperature（℃） | 25° | 100° | 200° | 300° | 400° | 500° | 600° | 700° |
Thermal Conductivity （kcal/mhr℃） | 0.030 | 0.037 | 0.048 | 0.058 | 0.076 | 0.094 | 0.112 | 0.16 |
