Express company
Glass - reinforced plastic extruded sections
There are many kinds of FRP profiles, such as FRP round pipe, FRP square pipe, FRP rectangular pipe, FRP round bar and FRP i-bar.
The basic composition of the FRP profile is resin and glass fiber (including cloth, felt, etc.). It is reinforced with fiber (including glass fiber, carbon fiber, organic fiber and other metal, non-metal fiber) and resin (mainly epoxy resin). Polyester resins, phenolic resins) are composite of other auxiliary materials (main auxiliary materials: mold release agent, curing agent, catalyst, sealing agent, UV light stabilizer, mold cleaning water, gel coat, etc.). It has high temperature resistance, corrosion resistance, high strength, low specific gravity, low moisture absorption, small extension and good insulation and other excellent characteristics.
Properties and properties of FRP profile
1. Good dimensional stability
The thermosetting resin matrix was cross-linked to form the mesh structure during the process of thermal processing. The product size was stable under normal conditions, and the post-shrinkage property occurred after forming was also small. Under long time continuous loading, the shape and size of the product change very little, that is, the creep is small. The creep property depends on the load size, temperature and loading time. The creep of thermosetting plastics is much smaller than that of thermoplastics under constant loading and temperature.
2. Excellent heat resistance and high temperature resistance
After the curing reaction of thermosetting resin matrix composite materials can no longer afford to soften, its products are quite stable, heat resistance with 1.86 MPa load determination, generally the thermal deformation temperature at 150 ~ 150 ℃, the fiber reinforced thermosetting plastics belongs to the excellent thermal insulation material, its thermal conductivity is generally 0.35 ~ 0.47 W/(m.K), only the metal from 1/100 to 1/1000, can be used as a good insulating material and the instant high temperature resistant material, thermal deformation temperature of the material can reach 350 ℃, can be used as a normal temperature and high temperature structural materials. Fiberglass/phenolic is a good insulating material for rocket and missile engines.
3. Excellent electrical performance
Composite materials are excellent electrical insulation materials. If products made with mica as filler have better electrical properties, they can be used to manufacture special parts with superior resistance to arc, voltage and induced electricity. Due to the excellent electrical properties of composite materials, their products are free from electrochemical corrosion and stray current corrosion, which can be widely used to manufacture insulating components in instruments, motors and electrical appliances, so as to improve the reliability of electrical equipment and extend its service life. In addition, the products have good dielectric performance and microwave transmission under the effect of high frequency, and have been used in the manufacture of a variety of radome insulation products.
4. Excellent corrosion resistance
Resin matrix composites with ordinary steel electrochemical corrosion mechanism is different, it does not conduct electricity, not have dissolved ions in electrolyte solution, in the atmosphere, water, and thus general concentration of acid, alkali, salt and other medium has good chemical stability, especially in the oxidizing acid and quite a wide ph range medium has good stability. Therefore, it is widely used in the manufacture of corrosion-resistant products, and it plays a good role in the corrosion of some medium (such as hydrochloric acid, chlorine gas, carbon dioxide, dilute sulfuric acid, sodium hypochlorite, sulfur dioxide, etc.) that stainless steel can't deal with.
5. Good surface properties of FRP profiles
In contact with chemical media, the surface of composite material is rarely corroded and has little scale. Therefore, it is often used to make fluid pipelines, with little resistance and low friction coefficient, saving a lot of power. Because composites generally do not produce metal ion contaminated media as easily as metals, this is also the reason why composite products are widely used in the food and medicine industries. In addition, the composite material has a very high friction (pv) limit value. Under the condition of water lubrication, the friction coefficient is very small, about 0.01~0.03, so it is also the preferred material for wear-resistant products.
The above advantages of the composite material are mainly used for mechanical structural parts, insulating parts, high-frequency mechanical parts and other functional structural parts.
There are many kinds of FRP profiles, such as FRP round pipe, FRP square pipe, FRP rectangular pipe, FRP round bar and FRP i-bar.
The basic composition of the FRP profile is resin and glass fiber (including cloth, felt, etc.). It is reinforced with fiber (including glass fiber, carbon fiber, organic fiber and other metal, non-metal fiber) and resin (mainly epoxy resin). Polyester resins, phenolic resins) are composite of other auxiliary materials (main auxiliary materials: mold release agent, curing agent, catalyst, sealing agent, UV light stabilizer, mold cleaning water, gel coat, etc.). It has high temperature resistance, corrosion resistance, high strength, low specific gravity, low moisture absorption, small extension and good insulation and other excellent characteristics.
Properties and properties of FRP profile
1. Good dimensional stability
The thermosetting resin matrix was cross-linked to form the mesh structure during the process of thermal processing. The product size was stable under normal conditions, and the post-shrinkage property occurred after forming was also small. Under long time continuous loading, the shape and size of the product change very little, that is, the creep is small. The creep property depends on the load size, temperature and loading time. The creep of thermosetting plastics is much smaller than that of thermoplastics under constant loading and temperature.
2. Excellent heat resistance and high temperature resistance
After the curing reaction of thermosetting resin matrix composite materials can no longer afford to soften, its products are quite stable, heat resistance with 1.86 MPa load determination, generally the thermal deformation temperature at 150 ~ 150 ℃, the fiber reinforced thermosetting plastics belongs to the excellent thermal insulation material, its thermal conductivity is generally 0.35 ~ 0.47 W/(m.K), only the metal from 1/100 to 1/1000, can be used as a good insulating material and the instant high temperature resistant material, thermal deformation temperature of the material can reach 350 ℃, can be used as a normal temperature and high temperature structural materials. Fiberglass/phenolic is a good insulating material for rocket and missile engines.
3. Excellent electrical performance
Composite materials are excellent electrical insulation materials. If products made with mica as filler have better electrical properties, they can be used to manufacture special parts with superior resistance to arc, voltage and induced electricity. Due to the excellent electrical properties of composite materials, their products are free from electrochemical corrosion and stray current corrosion, which can be widely used to manufacture insulating components in instruments, motors and electrical appliances, so as to improve the reliability of electrical equipment and extend its service life. In addition, the products have good dielectric performance and microwave transmission under the effect of high frequency, and have been used in the manufacture of a variety of radome insulation products.
4. Excellent corrosion resistance
Resin matrix composites with ordinary steel electrochemical corrosion mechanism is different, it does not conduct electricity, not have dissolved ions in electrolyte solution, in the atmosphere, water, and thus general concentration of acid, alkali, salt and other medium has good chemical stability, especially in the oxidizing acid and quite a wide ph range medium has good stability. Therefore, it is widely used in the manufacture of corrosion-resistant products, and it plays a good role in the corrosion of some medium (such as hydrochloric acid, chlorine gas, carbon dioxide, dilute sulfuric acid, sodium hypochlorite, sulfur dioxide, etc.) that stainless steel can't deal with.
5. Good surface properties of FRP profiles
In contact with chemical media, the surface of composite material is rarely corroded and has little scale. Therefore, it is often used to make fluid pipelines, with little resistance and low friction coefficient, saving a lot of power. Because composites generally do not produce metal ion contaminated media as easily as metals, this is also the reason why composite products are widely used in the food and medicine industries. In addition, the composite material has a very high friction (pv) limit value. Under the condition of water lubrication, the friction coefficient is very small, about 0.01~0.03, so it is also the preferred material for wear-resistant products.
The above advantages of the composite material are mainly used for mechanical structural parts, insulating parts, high-frequency mechanical parts and other functional structural parts.
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