In the pipe fittings used in daily life, many people are not clear UPVC, PVC, ABS, PP, PE, PS pipe, do not know what kind of pipe fittings should be selected, this article introduces the difference between UPVC, PVC, ABS, PP, PE, PS pipe.
Difference of UPVC, PVC, ABS, PP, PE, PS tube
I. UPVC tube
In fact, it is a kind of plastic pipe, the interface is generally glued, the UPVC pipe is not good at freezing resistance and heat resistance, so it is difficult to use as a hot water pipe, because its strength can not be applied to the pressure requirements of the water pipe, so the cold water pipe is rarely used. In most cases, PVC pipes are suitable for electrical wiring and sewage pipes. In addition, in recent years, the scientific and technological community has found that the chemical additive phthalein that can make PVC more soft has a great impact on the kidney, liver and testicles in the human body, which can lead to cancer, kidney damage, damage the body's functional regeneration system, and affect development.
Two, PVC pipe
Low molecular weight soluble in ketones, esters and chlorinated hydrocarbons and other solvents. High molecular weight insoluble. Polyvinyl chloride resin is processed and formed to obtain polyvinyl chloride plastic. The monomer has the advantages of low cost, mature production technology and easy processing. Acid and alkali resistance, wear resistance, good electrical insulation, no burning; But the thermal stability and light resistance is poor. Hydrogen chloride is released by decomposition at 140 ° C, and stabilizers need to be added in the processing and molding process. Low softening temperature, limited to 80℃ below the use. According to the amount of plasticizer added, soft plastics and hard resins can be prepared. Soft plastic can be used as wire and cable cover and other insulating materials, can be made into transparent film, used as raincoat, tablecloth, agricultural seedling film, etc. It is also used to make artificial leather, foam and PVC fiber. Hard plastics can be used to make plates, pipes, storage tanks, absorption towers, etc. A powder resin can be obtained by suspension polymerization of vinyl chloride, and a paste resin can be obtained by emulsion polymerization.
Three, ABS tube
ABS can be divided into general grade (including various impact grade), flame retardant grade, heat resistance grade, electroplating grade, transparent grade, structural foaming grade and modified ABS according to different uses. The general grade is used to manufacture gears, bearings, handles, machine housings and components, various instruments, computers, radio recorders, television sets, telephones and other housings and toys; Flame-retardant grade is used to manufacture electronic components, such as computer terminals, machine housings and various household appliance products; The structural foaming grade is used to manufacture enclosures for electronic devices, etc. Heat-resistant grade is used to manufacture automatic instruments and motor housings in power plants; Electroplating grade is used to manufacture automobile parts, various knobs, nameplates, decorations and daily necessities; The transparent grade is used to manufacture degree plates, food plates in refrigerators, etc.
ABS tubes have the following characteristics:
1, good impact resistance, good mechanical strength and high impact toughness, only ductile deformation when subjected to sudden attacks.
2, high working pressure: the working pressure of this product at room temperature 20℃ can reach 0.6-1.2Mpa.
3, the fluid resistance is small: the inner wall of the product is smooth, the corner is circular, so the flow friction is small, greatly reducing the fluid resistance and the horsepower of the pump.
4, stable chemical performance: non-toxic and tasteless, can be used in pharmaceutical and food industries, this product does not change the water quality, will not form secondary pollution.
5, the use of large temperature range: the use of temperature range of -20℃-70℃.
6, light weight saving investment: the proportion of ABS plastic is 1/7 of steel, reducing the weight of the structure, reducing the consumption of raw materials, reducing the artificial strength, thus greatly saving the investment of the project. 7, easy installation, good sealing performance: the installation uses the socket connection.
Four, PP tube
The material is polypropylene. Odorless, tasteless and non-toxic. It is one of the lightest resins commonly used. Excellent mechanical properties. Good heat resistance, continuous use temperature up to ll0-120℃. Good chemical stability, in addition to strong oxidants, and most chemicals do not work. Water resistance is particularly good. Excellent electrical insulation. However, it is easy to age and the impact strength is poor at low temperature. Application fields for the production of injection molding products, films, pipes, plates, fibers, coatings and so on. Widely used in household appliances, automotive, chemical, construction, light industry and other fields.
Five, PE tube
The material is polyethylene. Tasteless, non-toxic. Chemical resistant, insoluble in solvents at room temperature. Low temperature resistance, the lowest operating temperature -70 ~ -100℃. Good electrical insulation, low water absorption. Physical and mechanical properties vary with density. Industrial low density polyethylene mainly uses high pressure (110 ~ 200MPa), high temperature (150 ~ 300℃) free radical polymerization. Others use low pressure coordination polymerization, and sometimes the same set of devices can produce polyethylene products with a density of 0.87 ~ 0.96g/cm3, called full density polyethylene process technology. Polyethylene can be processed into film, wire and cable sheath, pipe, all kinds of hollow products, injection products, fibers and so on. Widely used in agriculture, packaging, electronic and electrical, machinery, automobiles, daily necessities and other aspects.
Six, PS tube
The material is polystyrene. Mainly used as audio and video products and CD disk boxes, lamps and indoor decorative parts, high frequency electrical insulation parts. Its biaxial oriented film is the main material for packaging and electrical industry.