1. Lightweight and high strength

The density of FRP profile is about 1.7, which is 4 to 5 times lighter than steel, but its strength is very large. Its tensile strength is 350-450 MPa, which is close to ordinary carbon steel. The bending strength is 388 MPa and the bending elastic modulus is 20,900 MPa. Reinforced with steel lining, the glass fiber reinforced plastic window has been tested, and the wind pressure resistance performance reaches 5.3Kpa, which exceeds the level 8 in the international GB/T7106-2002 standard.

2. Energy saving and heat preservation

The thermal conductivity of FRP profile is 0.39W/m·k, which is only 1/100～1/1000 of that of metal. It is an excellent thermal insulation material. In addition, the glass fiber reinforced plastic profile has a hollow structure, and all gaps are sealed by rubber strips and wool strips, so the heat insulation effect is remarkable. After testing, the heat transfer coefficient of FRP casement windows (single frame double glass window) K0=2.2W/(m2·K), which belongs to the national standard GB/T8484-2002 standard 8 level; FRP casement windows (single frame three glass windows) Window) heat transfer coefficient K0=1.8W/(m2·K), which belongs to the 9th level in the national standard GB/T8484-2002; FRP casement windows (single frame three-glass windows, low-e glass) heat transfer coefficient K0=1.3 W/(m2·K), belongs to the 10th level in the national standard GB/T8484-2002 standard.

3. Good sealing performance

In the assembly process of FRP doors and windows, the corner treatment adopts the glue and screw connection process. At the same time, all the gaps are sealed with rubber strips and wool strips. In addition, the special profile structure makes the sealing performance good. After being tested by the National Construction Engineering Quality Supervision and Inspection Center, Beijing Construction Hardware Plumbing Product Quality Supervision and Inspection Center, and Beijing Construction Engineering Quality Inspection Center, the airtightness reached the level 5 in the national standard GB/T7107-2002; the watertight performance reached Level 3 in the national standard GB/T7107-2002.

4. The effect of health, green environmental protection and energy saving is remarkable

The test results of FRP door and window profiles meet the index requirements of the main building material in the GB6566-2001 "Limits for Radionuclides of Building Materials". The test result is 0.2, the internal exposure index is 0.2, and the external exposure index is 0.2.

5. Good sound insulation

Tested by the National Construction Engineering Quality Supervision and Inspection Center, the air-acoustic weighted sound insulation RW of brand glass fiber reinforced plastic double-glass and triple-glass windows reached 36dB and 39dB, respectively, and the sound insulation performance level was 4.

6. Corrosion resistance

FRP is an excellent corrosion-resistant material. It has good resistance to acid, alkali, salt and most organic matter, sea water and moisture, and it also has resistance to microorganisms. This feature is especially suitable for use in rainy, humid and coastal areas, as well as places with corrosive media.

7. Good dimensional stability

The coefficient of linear expansion of FRP profile is 7.3×10-6/℃, which is lower than that of steel and aluminum alloy, and is 1/15 of plastic. Therefore, FRP doors and windows have good dimensional stability, and temperature changes will not affect the normal opening and closing functions of doors and windows.

8. Good weather resistance

FRP is a thermosetting plastic. After the resin is cross-linked, it will form a three-dimensional network molecular structure and become an insoluble insoluble body, which will not melt even if heated. The heat distortion temperature of FRP profile is above 200℃, and the high temperature resistance is good. The low temperature resistance is better.

9. Good insulation performance

FRP is a good insulating material, it is not affected by electromagnetic waves, does not reflect radio waves, has good microwave permeability, and can withstand high voltage without damage. Therefore, FRP doors and windows have special uses for temporary buildings and communication system buildings in the field.

10. Good shock absorption performance

The elastic modulus of the FRP profile is 20900. The doors and windows made of it have a high damping frequency. The combination of the resin and fiber interface in the FRP has shock absorption and anti-vibration capabilities, which avoids the early vibration caused by the resonance of the structural parts under working conditions. destroy.

11. Rich colors

FRP profiles have high hardness and can be coated with various paints to make doors and windows of various colors to adapt to different styles and grades of building facade effects.