What are the main components of cpvc and pvc-c pipes?


The main component of cpvc pipe is chlorinated polyviny […]

The main component of cpvc pipe is chlorinated polyvinyl chloride resin, and the main component of pvc-c pipe is chlorinated polyvinyl chloride. The two are not the same pipe.

CPVC water supply pipe is a new type of water supply pipe produced by extruding chlorinated polyvinyl chloride resin as the main raw material.
The main component of cpvc pipe is chlorinated polyvinyl chloride. Chlorinated polyvinyl chloride (CPVC), also known as perchlorovinyl chloride, is a product made by the substitution reaction of specific grades of polyvinyl chloride (PVC) and chlorine under the initiation of the reaction. This new type of synthetic polymer material is a white or light yellow flowable solid powder. The basic performance is similar to that of PVC, but the CPVC prepared by chlorination modification of PVC resin has significantly improved heat resistance, physical and mechanical properties, chemical stability and flame retardancy. It is a high-quality and low-cost project. plastic.


CPVC is a new type of engineering plastic with broad application prospects. The resin is made by chlorination modification of polyvinyl chloride (PVC) resin and is a new type of engineering plastic. The product is white or light yellow odorless, odorless, non-toxic loose particles or powder. After the PVC resin is chlorinated, the irregularity of molecular bonds increases, the polarity increases, the solubility of the resin increases, and the chemical stability increases, thereby improving the material’s heat resistance, acid, alkali, salt, oxidant, etc. corrosion. Improve the mechanical properties of the numerical heat distortion temperature, the chlorine content has increased from 56.7% to 63-69%, the Vicat softening temperature has been increased from 72-82℃ to 90-125℃, and the maximum operating temperature can reach 110℃, long-term use The temperature is 95 ℃. Among them, CORZAN CPVC has better performance indicators.


★Pipe: CPVC is mainly used to produce plates, rods, and pipes to transport hot water and corrosive media. It can maintain sufficient strength when it does not exceed 100 ℃, and can be used for a long time under high internal pressure. The weight of CPVC is 1/6 that of yellow copper and 1/5 that of steel, and it has extremely low thermal conductivity. Therefore, pipes made of CPVC are light in weight, have good thermal insulation properties, and do not need heat preservation.

★ CPVC pipes can be used as hot sewage pipes, electroplating solution pipes, thermochemical reagent delivery pipes, and wet chlorine delivery pipes in chlor-alkali plants.

★ Injection molded parts: CPVC resin can produce water supply pipe fittings, filter materials, dehydrators, etc., as well as electrical and electronic parts. Such as wire trough, protective layer of conductor, electric switch, protective cover of fuse, insulation material of cable, etc.

★ Calendered sheet: It can be used to manufacture chemical and corrosion-resistant chemical equipment, such as reactors, valves, electrolytic cells, etc.

★ Composite materials: CPVC composite materials composed of CPVC and certain inorganic or organic fibers have good impact resistance and better heat resistance than other resin composite materials, and can be made into sheets, pipes, corrugated plates, profiled materials, etc.

★ CPVC can be used for the modification of chlorinated fibers: the washing temperature of domestic chlorinated fibers should not exceed 60 ℃. Adding 30% of CPVC to the spinning of chlorinated fibers can greatly improve the heat resistance of the product, and the shrinkage rate is reduced from the original 50% dropped to less than 10%.

★ Foaming material: The heat resistance of CPVC foaming material is better than that of PVC foaming material. The shrinkage rate at high temperature is quite small, and it can be used as thermal insulation material for hot water pipes and steam pipes. CPVC with a chlorine content greater than 60% has a very good retention of solvents. CPVC can be foamed in a solvent that can generate gas when heated, and a uniform and microporous foaming gas can be obtained. The boiling point is 50-160 °C. Solvents such as hydrocarbons, ethers, and aldehydes are used as blowing agents.

★Others, blending CPVC with thermoplastic or thermosetting plastics can significantly improve the physical and mechanical properties of these materials, such as improving the heat resistance of the products.

★ Foreign countries have also produced CPVC with higher impact resistance and better transparency through the improvement of production technology. This transparent material can be used in automobiles, optical discs, and audio-visual products, and has good economic benefits.

PVC-C pipe: high temperature mechanical strength, suitable for pressure occasions. The operating temperature is up to about 90 degrees Celsius, and the life span can reach 50 years. It is safe and simple. The connection method is flux bonding, threaded connection, flange connection and welding rod connection. Flame retardant, fireproof, low thermal conductivity, less heat loss in the pipeline, low installation cost, but pay attention to the toxicity of the glue used.
PVC-C resin is a new type of buried high-voltage power cable protection tube made by high-speed extrusion by adding anti-impact agent, stabilizer and other auxiliary materials as master batch.

The product has the characteristics of high strength, good flexibility, high temperature resistance, corrosion resistance, flame retardant, good insulation performance, no pollution, not easy to age, light weight, convenient construction, etc. Its performance indicators have been tested and appraised at the national and provincial levels And certification, have reached or exceeded the level of similar domestic products. The product performance is much better than traditional asbestos cable pipe and ordinary PVC pipe, and it is an ideal substitute for traditional power cable sheath.


1. Material characteristics

PVC-C power pipes use PVC-C resin with excellent heat resistance and excellent insulation properties as the main material. PVC-C products are currently recognized as green products, and their excellent physical and chemical properties are receiving more and more attention from the industry.

The PVC-C power pipe is a hard straight solid wall pipe with smooth inner and outer walls, orange-red in color, bright and eye-catching.

2. Heat resistance

Compared with ordinary UPVC double-wall corrugated pipes, PVC-C power pipes have a heat-resistant temperature increase of 15°C, and can maintain no deformation in an environment below 105°C and have sufficient strength.

3. Insulation performance

PVC-C power pipes can withstand high voltages above 30,000 volts.

4. Compression resistance

PVC-C power pipes have undergone material modification, and the product has a ring stiffness of 1Okpa, which is significantly higher than the national regulations for buried plastic pipes, whose ring stiffness should be above 8kpa.

5. High impact resistance

PVC-C power pipe CPVC Pipes Manufacturerscan withstand 1kg heavy hammer and 2m height impact at 0℃, which fully reflects that the low temperature impact performance of the material is fully suitable for the requirements of construction environmental conditions.

6. Flame retardant performance

Both PVC and PVC-C materials have good flame-retardant properties and can be extinguished immediately after leaving the fire. Especially for PVC-C material, because its chlorine content is significantly higher than that of PVC, its flame retardancy and smoke density index are significantly improved.

7. Installation performance

The PVC-C power pipe is light in weight, high in strength, and simple in construction and laying methods. It can be excavated and buried at night, backfilled on the road surface, and can be opened to traffic during the day; it adopts elastic sealing rubber ring socket connection, convenient and fast installation and connection, and connection sealing performance Good, can prevent the leakage of groundwater, and effectively protect the safety of power cables.

8. Long service life

PVC-C power pipe material is corrosion-resistant, anti-aging, and has a service life of more than 50 years.