FRP Pultrusion Profiles Basic Knowledge

The basic components of FRP pultruded profiles are resin and glass fiber (including cloth, felt, etc.). It uses fiberglass as a reinforcing material. It is compounded with resin as glue linking agent, supplemented by other auxiliary materials (main auxiliary materials: release agent, curing agent, catalyst, sealing agent, UV light stabilizer, mold cleaning water, gel coat, etc.). FRP pultrusion There are many kinds of profiles, such as FRP round tubes, FRP square tubes, FRP rectangular tubes, FRP round bars, FRP I-beams. It has high mechanical properties and intermediate point performance, and can be made into bars of various shapes and sections according to different molds to meet the different needs of users.

(1) High strength

The tensile strength of the pultruded profile is 150-300MPa, the bending strength is 200-300MPa, and the bending strength retention rate after 1000h artificial accelerated aging can reach 78%.

(2) Low deformation rate

FRP pultruded profile after 1000h artificial accelerated aging, the length change is +0.03%, and the width change rate is -0.07%. Therefore, the geometric shape and size of products made with the pultruded profile can be kept stable for a long time.

(3) High heat distortion temperature

The heat deformation temperature of the pultruded profile is 186℃, it will not soften at high temperature, and will not be brittle at -60℃, which ensures the normal use under various ambient temperatures.

(4) Low water absorption

The water absorption rate of ordinary glass fiber reinforced plastic products is less than 0.5%, and

The water absorption rate of the pultruded profile is only 0.257%, which is suitable for use in humid environments.

(5) Low thermal insulation coefficient

The heat transfer coefficient of the pultruded profile is close to that of rigid PVC, and the heat insulation coefficient of the single frame double glass insulation window made of it is only 2.69W/(m2K), while the same type made of steel and aluminum The thermal insulation coefficient of the window is as high as 4.0W/(m2K), indicating that the energy saving of FRP doors and windows is very obvious.

(6) Strong corrosion resistance

The pultruded profile is immersed in 3% HCI aqueous solution for 24 hours, and its hardness retention rate is 95%; after immersed in 3% NaCl aqueous solution for 24 hours, its hardness retention rate is 89%. Therefore, doors and windows made of FRP pultruded profiles are not only suitable for general residential houses, hotels, restaurants, but also suitable for industrial plants in coastal areas and corrosive operating environments.

(7) Adapt to environmental requirements

The production process used in processing pultruded profiles has the characteristics of low noise, high efficiency, low power consumption, and low pollution, which meets the relevant national environmental requirements.