The glass is hard and brittle, has good transparency and high temperature resistance, corrosion resistance of FRP cooling towers, etc. At the same time, the steel is very hard and not brittle, and also has high temperature resistance. Therefore, people began to think that if it can produce a property that has the hardness, high temperature resistance and corrosion resistance of glass, and is as hard and brittle as steel, then this material will be of great use. After research and experimentation, people finally made such a composite material. It is a fiberglass that stands shoulder to shoulder with steel. Let's first look at a test to see if it performs well or not. In a valley surrounded by mountains and trees, a trial is underway. People behind the bunker, 200 meters away, stared at an oxygen cylinder in the middle of the valley. The air compressor rotates rhythmically, through the alloy steel pipe to that The FRP oxygen cylinder is continuously inflated. The pointer on the pressure gauge affects everyone's heart. The reading gradually increased from 100-200-400-500, until 700 kg 1 cm2, only a loud bang, the oxygen cylinder exploded! The people around cheered and jumped up: "Success!" The oxygen cylinder is a high pressure resistant container. It is subjected to a working pressure of 150 kg/cm 2 . In order to be safe to use, it is required to withstand three times the working pressure, that is, 450 kg/cm 2 . It does not burst, it is considered qualified. The oxygen cylinders tested above far exceeded the design requirements. What kind of steel is it made of? It is made of FRP, or more specifically, glass and plastic. The glass is a hard and brittle material. When it falls, it breaks. Can the glass-glass FRP withstand the fall? Then a new test was carried out. Inflate another FRP oxygen cylinder to 150 kg/cm2 and then roll down the valley from the top of the mountain. It's awkward The fiberglass cloth rock collided and rolled all the way to the bottom of the valley without bursting. The FRP oxygen cylinder has passed the quality test. Generally, the tensile strength of glass is only one-eighth of that of ordinary steel. The glass is melted and pulled into a glass fiber that is only a fraction of a tenth of the diameter of the hair. The original hard and brittle glass becomes a soft and tensile glass fiber, and its tensile strength can be increased by a dozen. Times. Everyone knows that the cement block is resistant to pressure and the steel is resistant to tension. Use steel as the bones and cement sandstones as muscles, let them condense into one, and complement each other to become strong and strong - this is reinforced concrete. Similarly, if we use glass fiber as the bone and bone, synthetic resin (phenolic plastic, epoxy resin and polyester resin) is used as the muscle to make them together. The tensile strength of the material is comparable to that of steel. It is called FRP. Earphone Cases,Earphone Eva Case For Bluetooth,Bluetooth Earphone Eva Case,Earphones Eva Cases Dongguan C.Y. RedApple Industrial Limited , https://www.hpgbags.com
FRP physical and chemical properties