(1) The relative density of light weight and high strength is between 1
5 ~ 2
0, which is only 1 / 4 ~ 1 / 5 of that of carbon steel, but the tensile strength is close to or even higher than that of carbon steel, and the specific strength can be compared with that of high-grade alloy steel
Therefore, it has excellent results in aviation, rockets, spacecraft, high-pressure vessels and other products that need to reduce self weight
The tensile, bending and compressive strength of some epoxy FRP can reach more than 400MPa
(2) Good corrosion resistance FRP is a good corrosion-resistant material, which is resistant to atmosphere, water, acid, alkali, salt of general concentration, as well as a variety of oils and solvents
It has been applied to all aspects of chemical anti-corrosion and is replacing carbon steel, stainless steel, wood, non-ferrous metals and so on
(3) Good electrical performance is an excellent insulating material, which is used to make insulators
It can still protect good dielectric at high frequency
With good microwave transmission, it has been widely used in radar radome
(4) FRP has good thermal performance and low thermal conductivity
It is 1
25 ~ 1
67kj / (M & middot; H & middot; K) at room temperature, which is only 1 / 100 ~ 1 / 1000 of metal
It is an excellent thermal insulation material
Under the condition of instantaneous ultra-high temperature, it is an ideal thermal protection and ablation resistant material, which can protect the spacecraft from the scouring of high-speed airflow above 2000 ℃
(5) Good designability ① various structural products can be designed flexibly according to the needs to meet the use requirements, which can make the products have good integrity
② Materials can be fully selected to meet the performance of products, such as corrosion-resistant, instantaneous high temperature resistant, products with special high strength in a certain direction, good dielectric, etc
(6) Excellent processability ① the molding process can be flexibly selected according to the shape, technical requirements, purpose and quantity of the product
② The process is simple, can be formed at one time, and the economic effect is outstanding
Especially for the products with complex shape and small quantity that are not easy to form, its process advantages are more prominent
Due to the great design flexibility of FRP storage tank and excellent structural performance of tank wall, fiber wound FRP can change the resin system or reinforcement materials to improve the physical and chemical properties of high-speed FRP storage tank and non-standard devices, so as to meet the needs of different media and working conditions
Through the structure and design of structural layer thickness, winding angle and wall thickness, the bearing capacity of the tank body is adjusted to make FRP storage tanks and non-standard devices with different pressure levels or some special properties, which can not be compared with isotropic metal materials
Scope of application 1
FRP tank application industries: ferrous metallurgy, nonferrous metallurgy, electric power industry, coal industry, petrochemical industry, chemical industry, electromechanical industry, textile industry, automobile and motorcycle manufacturing industry, railway industry, shipbuilding industry, construction industry, light industry, food industry, electronic industry, post and telecommunications industry, culture, sports and entertainment industry, agriculture, commerce Medical and health industry, and military and civil applications
2
Media that FRP storage tank can store: (1) inorganic acid: (dilute sulfuric acid, dilute nitric acid, hydrochloric acid, phosphoric acid, hydrofluoric acid, hydrobromic acid, hypochlorous acid, silicic acid, nitrite, sulfite, carbonic acid, fluorosilicic acid, fluoroboric acid, etc
)
(2) Organic acids: (formic acid, acetic acid, propionic acid, maleic acid, lauric acid, fatty acid, lactic acid, glycolic acid, peracetic acid, oxalic acid, malonic acid, succinic acid, maleic acid, malic acid, tartaric acid, benzoic acid, phenylacetic acid, etc
)
(3) Alkali and hydroxide: (sodium hydroxide, potassium hydroxide, ammonia hydroxide, calcium hydroxide, magnesium hydroxide, barium hydroxide, aluminum hydroxide, iron hydroxide, ammonium sulfate, ammonium nitrate, ammonium carbonate, ammonium nitrate, ammonium phosphate, ammonium persulfate, ammonium chloride, sodium silicate, potassium hypochlorite, aluminum carbonate, aluminum nitrate, aluminum sulfate, potassium acetate, potassium formate, potassium, copper sulfate, copper nitrate, alum, calcium carbonate, etc
) Etc
)
(4) Elements, gases, and other inorganic compounds (sulfur, sulfur colloid, phosphorus, mercury, hydrogen peroxide, ammonia, coal, carbon monoxide, carbon dioxide, sulfur dioxide, hydrogen chloride, hydrogen bromide, hydrogen sulfide, phosphine, boron fluoride, calcium oxide, zinc oxide, etc
)
(5) Alcohols, aldehydes, ketones, ethers, esters, hydrocarbons and petroleum products (methanol, ethanol, n-propanol, isopropanol, dilute propanol, butanol, SEC butanol, tert butanol, n-ethanol, tert ethanol, formaldehyde, acetaldehyde, butyraldehyde, asphalt, etc
)
(6) Other elemental compounds, industrial liquids and products, food and vegetable oils, atmosphere, water, soil (soap, detergent, sulfur lime, bleach, ink, latex, starch, gelatin, animal oil, rosin, nicotine, vinegar, yeast, wine, seawater, brine, high-purity water, acidic mineral water, sewage, soil, etc
)
(7) Halogen containing organic compounds, amines, phenols, other organic compounds (chloropropanol, *, hexachlorobenzene, freon, dimethylformamide, Resorcinol, hydroquinone, sodium phenol, mylin, nicotine, etc
) [2]