When many homeowners are in the home, they are not able to face all kinds of pipes. Therefore, it is particularly important to understand the characteristics of various types of pipes.
1. UPVC pipe is actually a kind of plastic pipe. The interface is generally glued. The anti-freeze and heat resistance of UPVC pipe are not good, so it is difficult to use it as a hot water pipe. The pressure requirements, so cold water pipes are rarely used. In most cases, PVC pipes are suitable for wire and sewage pipes. In addition, in recent years, the scientific and technological circles have found that chemical additives that make PVC softer have a great influence on the kidney, liver and testis in the human body, which can lead to cancer and kidney damage, destroy the function of the human body, and affect the development.
Second, PVC pipe, low molecular weight soluble in ketones, esters and chlorinated hydrocarbons. High molecular weight is poorly soluble. The polyvinyl chloride resin is processed to obtain a polyvinyl chloride plastic. The monomer cost is low, the production process is mature, and the processing is easy. Acid and alkali resistance, wear resistance, electrical insulation, good combustion, but poor thermal stability and light resistance. Hydrogen chloride is liberated at 140 Â° C, and a stabilizer is added during the processing. The softening temperature is low and is limited to 80 Â° C or less. Soft plastics and hard resins can be made depending on the amount of plasticizer added. Soft plastic can be used as wire and cable sheathing and other insulating materials, can be made into transparent film, used as raincoat, tablecloth, agricultural seedling film, etc.; also used for making artificial leather, foam plastic and polyvinyl chloride fiber. Rigid plastics can be used for making sheets, pipes, storage tanks, absorption towers, etc. The vinyl chloride is polymerized by a suspension method to obtain a powdery resin, and if it is polymerized by an emulsion method, a paste resin can be obtained.
Third, ABS pipe, ABS can be divided into general-grade (including various impact grade), flame retardant grade, heat-resistant grade, electroplating grade, transparent grade, structural foaming grade and modified ABS according to different purposes. General purpose grades for the manufacture of gears, bearings, handles, machine housings and components, enclosures, computers, tape recorders, televisions, telephones, etc., and toys; flame retardant grades for the manufacture of electronic components such as computer terminals, machine housings and Various household appliances ; structural foaming grades for the manufacture of enclosures for electronic devices; heat-resistant grades for the manufacture of automated instruments and motor housings for power plants; electroplating grades for the manufacture of automotive components, various knobs, nameplates, Decorations and daily necessities; transparent grades are used to make dials, food trays in refrigerators, etc.
Fourth, PP pipe, the material is polypropylene. Odorless, tasteless, non-toxic. It is the lightest of the commonly used resins. Excellent mechanical properties. Good heat resistance, continuous use temperature can reach ll0-120 Â°C. It has good chemical stability and does not interact with most chemicals except strong oxidants. Water resistance is particularly good. Excellent electrical insulation. However, it is easy to age and has a poor impact strength at low temperatures. Applications are used in the production of injection molded articles, films, pipes, sheets, fibers, coatings, etc.
5. PE pipe, the material is polyethylene. It is tasteless and non-toxic. Chemically resistant, insoluble in solvents at room temperature. Low temperature resistance, minimum use temperature -70 ~ -100 Â°C. Good electrical insulation and low water absorption. Physical and mechanical properties vary by density. Industrial low-density polyethylene mainly uses high-pressure (110 ~ 200MPa), high temperature (150 ~ 300 Â° C) free radical polymerization. Others use low pressure coordination polymerization, sometimes the same set of equipment can produce polyethylene products with a density of 0.87 ~ 0.96g / cm3, called full density polyethylene process technology. Polyethylene can be processed into films, wire and cable sheaths, pipes, various hollow products, injection molded products, fibers, and the like. Widely used in agriculture, packaging, electrical and electronics, machinery, automobiles, daily groceries and other aspects.
Sixth, PS tube, the material is polystyrene. Mainly used as audio and video products and CD-ROM boxes, lamps and interior decoration parts, high-frequency electrical insulation parts. Its biaxially oriented film is the main material for the packaging and electrical industry.
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