Direct buried prefabricated PPR heat preservation pipe, composite integrated heat preservation pipe, J Hotel Hot Spring dedicated cold and hot water PPR heat preservation pipe factory direct selling price is affordable
PPR random copolymerized polypropylene
1. Macromolecules polymerized from one kind of monomers are called homopolymers, and macromolecules polymerized from two or more kinds of monomers are called copolymers;
2. Pp-h is a homopolymer polymerized from propylene propylene;
3. PP-B and PP-R are copolymers (PP-c) polymerized from propylene monomer propylene and ethylene monomer ethene, among which: 1) the advanced gas phase copolymerization process is adopted, and PE is polymerized randomly and evenly in the molecular chain of PP, which is called PP-R (random copolymerization polypropylene); 2) use PP and PE block copolymerization, constant temperature resistant and anti-aging insulation pipe, this material is called PP-B (block copolymer polypropylene).
What is PPR tube? PPR pipe: richly endowed by nature, as a new type of water pipe material, PPR pipe can be used as a cold pipe, high temperature resistant and anti-aging insulation pipe directly, or can also be used as a hot water pipe. Because of its health, light weight, pressure resistance and corrosion resistance, it is becoming a promotional material. It is also suitable for hot water pipes and even pure drinking water pipes. The interface of PPR pipe adopts hot-melt technology, and the pipes are completely integrated together. Once the installation and pressure test pass, there will be no aging and water leakage phenomenon like aluminum plastic pipe for a long time, and PPR pipe will not scale.
1. Rigid polyurethane has low thermal conductivity and good thermal performance. When the density of rigid polyurethane is 35-40kg / m3, the thermal conductivity is only 0.018-0.024w / (m.k), about half of EPS, which is less than that of all thermal insulation materials at present.
2. The rigid polyurethane has moisture-proof and waterproof properties. The closed cell rate of rigid polyurethane is more than 90%, which belongs to hydrophobic material. It will not increase the thermal conductivity due to moisture absorption, and the wall will not seep water.
3. Hard polyurethane is fireproof, flame retardant and high temperature resistant. Polyurethane is a flammable self extinguishing material after adding flame retardants. Its softening point can reach above 250 degrees Celsius. It will decompose only at higher temperatures. In addition, polyurethane will form carbon deposits on its foam surface when burning, which helps to isolate the foam below. It can effectively prevent the flame from spreading. Moreover, Sichuan's wholesale heat resistant and anti-aging insulation pipes, polyurethane does not produce harmful gases at high temperatures.
4, as the polyurethane board has excellent thermal insulation performance, under the same thermal insulation requirements, the high temperature and anti-aging insulation pipe can reduce the thickness of the outer envelope of the building and increase the indoor use area.
5. Strong deformation resistance, not easy to crack, stable and safe facing.
6. The porosity structure of polyurethane material is stable, basically closed structure, which not only has excellent heat preservation performance, but also has good freeze-thaw resistance and sound absorption. The average life of the rigid polyurethane insulation structure can reach more than 30 years under the condition of normal use and maintenance. It can be ensured that under normal service conditions during the service life of the structure, it will not be damaged due to dry, wet or electrochemical corrosion, as well as external factors such as insects, algae growth or rodent damage.
7. Low comprehensive cost performance. Although the unit price of rigid polyurethane foam is higher than that of other traditional insulation materials, the increased cost will be offset by a substantial reduction in heating and refrigeration costs.