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Chrome emblems-Polyurethane material external insulation system Xiangjie Source: :Internet
Energy conservation is of great concern to the appointment of the world event, China's building energy consumption accounts for about 47 per cent of total energy consumption, the state has issued compulsory energy-saving construction of the 50 per cent, promote the use of 65 per cent of the national policy. The state has promulgated and implemented the "Regulations on Management of energy-saving buildings," "public building design standards", the recent state promulgated the "special plans for medium and long-term energy-saving": new construction during the 11th Five-Year Plan should strictly implement energy-saving standards and existing buildings should be gradually The implementation of energy-saving transformation.
Polyurethane can be said that the current energy-saving construction and transformation of the best insulation materials, it is a new organic polymer materials, mainly by the multi-isocyanate (which diisocyanate more applications) and polyol increase Polymerization from 10%. No reaction in the by-products. Thus less shrinkage, Jiaoceng cured after the stress is relatively small. Thus as the "fifth largest plastic" because of their superior performance has been widely used in many areas of the national economy.
Polyurethane is superior to the traditional performance of the XPS, EPS thermal insulation system. Such thermal insulation system technology has been on national provincial and municipal leaders, experts attention. Ministry of Construction Technology Division has set up a polyurethane construction to promote conservation of the Working Group and has held in Beijing the "wall of polyurethane energy-saving applications international exchanges", the provinces, municipalities and autonomous regions, municipalities, the Office of Construction (Construction Committee ) The Office of the energy-saving wall materials innovation, design and development units nearly 100 representatives. International building energy efficiency expert David • Dr. Alvin told reporters, polyurethane material is the best international performance insulation materials, rigid polyurethane plastic is light weight, low thermal conductivity, heat resistance, and anti-aging , Easy to bond with other materials, combustion does not have a solution, such as outstanding performance drops. Europe and the United States and other developed countries in the construction of thermal insulation material for about 49 percent of polyurethane materials, and the proportion of China's less than 10 percent, for the Ministry of Construction will be starting this year as a traditional building material polyurethane insulation material as a substitute for Promotion.
Rigid Polyurethane Foam is a polyurethane insulation materials in the construction area of the more common way. Is the most extensive application of the wall insulation materials, and its name is rigid polyurethane foam. It is mainly two kinds of chemical raw materials (A material, B material) mixed, formed by the chemical reaction of rigid foam. A material - organic isocyanate, B predicted - polyol (polyether polyol) and foaming agent, catalyst, such as flame retardants. A, B-compression foam as expected, heating, pipe insulation to the Indoor Air mixed and mixed with compressed air to be sprayed on the surface of insulation fired at a moment of Yingpao.
Rigid Polyurethane Foam with the performance of the following:
1) strong cohesive force: in concrete, wood, steel, asphalt, rubber, and so on the surface bonded firmly.
2) thermal insulation is good: thermal conductivity can reach 0.017-0.022 W / m • k, each equivalent to 40 cm cm thick brick insulation effect.
3) waterproof good performance: obturator rate of more than 90 percent, since the crust obturator rate of 100%.
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4) the whole seal, no cavity seamless bond, to various forms of surface.
5) dimensional stability of less than 1 percent, have a certain toughness, the extension is more than five percent, will not crack.
6) density ≥ 35 kg / m3, compressive strength of> 400 Kpa, a very strong wind open, affordable, finishes 30 kg / ©O not the weight loss.
7) flame retardant and good: the fire away from 3 s Zixi carbonation, not melting.
Polyurethane can be said that the current energy-saving construction and transformation of the best insulation materials, it is a new organic polymer materials, mainly by the multi-isocyanate (which diisocyanate more applications) and polyol increase Polymerization from 10%. No reaction in the by-products. Thus less shrinkage, Jiaoceng cured after the stress is relatively small. Thus as the "fifth largest plastic" because of their superior performance has been widely used in many areas of the national economy.
Polyurethane is superior to the traditional performance of the XPS, EPS thermal insulation system. Such thermal insulation system technology has been on national provincial and municipal leaders, experts attention. Ministry of Construction Technology Division has set up a polyurethane construction to promote conservation of the Working Group and has held in Beijing the "wall of polyurethane energy-saving applications international exchanges", the provinces, municipalities and autonomous regions, municipalities, the Office of Construction (Construction Committee ) The Office of the energy-saving wall materials innovation, design and development units nearly 100 representatives. International building energy efficiency expert David • Dr. Alvin told reporters, polyurethane material is the best international performance insulation materials, rigid polyurethane plastic is light weight, low thermal conductivity, heat resistance, and anti-aging , Easy to bond with other materials, combustion does not have a solution, such as outstanding performance drops. Europe and the United States and other developed countries in the construction of thermal insulation material for about 49 percent of polyurethane materials, and the proportion of China's less than 10 percent, for the Ministry of Construction will be starting this year as a traditional building material polyurethane insulation material as a substitute for Promotion.
Rigid Polyurethane Foam is a polyurethane insulation materials in the construction area of the more common way. Is the most extensive application of the wall insulation materials, and its name is rigid polyurethane foam. It is mainly two kinds of chemical raw materials (A material, B material) mixed, formed by the chemical reaction of rigid foam. A material - organic isocyanate, B predicted - polyol (polyether polyol) and foaming agent, catalyst, such as flame retardants. A, B-compression foam as expected, heating, pipe insulation to the Indoor Air mixed and mixed with compressed air to be sprayed on the surface of insulation fired at a moment of Yingpao.
Rigid Polyurethane Foam with the performance of the following:
1) strong cohesive force: in concrete, wood, steel, asphalt, rubber, and so on the surface bonded firmly.
2) thermal insulation is good: thermal conductivity can reach 0.017-0.022 W / m • k, each equivalent to 40 cm cm thick brick insulation effect.
3) waterproof good performance: obturator rate of more than 90 percent, since the crust obturator rate of 100%.
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4) the whole seal, no cavity seamless bond, to various forms of surface.
5) dimensional stability of less than 1 percent, have a certain toughness, the extension is more than five percent, will not crack.
6) density ≥ 35 kg / m3, compressive strength of> 400 Kpa, a very strong wind open, affordable, finishes 30 kg / ©O not the weight loss.
7) flame retardant and good: the fire away from 3 s Zixi carbonation, not melting.
Dlysport Plastic Co.,Ltd.Professional production car decorations,chrome emblems,chrome accessories,chrome badges, door handle covers,mirror covers,tailgate covers,undercar neon kits,taillight covers,gear shift frames,gear shift knobs,headlight brows,mud guds,grills,vents,dlysport.com
Spraying of the above decision Rigid Polyurethane Foam insulation of the unparalleled advantage. In addition, Rigid Polyurethane Foam with EPS, XPS insulation materials compared with the characteristics:
1, thermal insulation properties: Rigid Polyurethane Foam thermal conductivity of 0.022 W / m • k, EPS to 0.041 kW / m • k, XPS to 0.028 W / m • k.
2, sealing: EPS, XPS for a joint bond cavity, outside air through cracks very easily, the cavity in circulation, affecting insulation properties. On the Dalian region, 24 cm light-block wall shape coefficient> 0.3, reaching 65 percent of energy-saving, wall heat transfer coefficient of 0.57, the use of PU insulation, the insulating layer thickness 30 mm, EPS80 mm, XPS60 mm thick (consider Cavity to a seamless factors).
3, wind open to the brick layer and the bearing capacity: PU density of 35 kg / m3, tensile bond strength of 0.3 Mpa, all the external walls of high-rise buildings can withstand the negative pressure due to wind load capacity. The EPS tensile strength in the dry state, only 0.1 Mpa, soaking the adhesive tensile strength is lower, so the general EPS can not be used for high-rise building.
4, anti-cracking performance: PU insulation itself stability ± 30 ¡æ, the size of rate <1%, the surface will not crack. The EPS, XPS requires 40 days after the degradation can be used for construction, and the practical application difficult to achieve this, hence the country's many works EPS insulation cracks, the wall through the cold, back to the water phenomenon.
5, waterproof performance: PU Yingpao obturator rate of 90 percent, since the crust obturator rate of 100%, while EPS, XPS for the cavity paste, water, guitar dew easily infiltrated into the cavity through the cracks and interior.
6, fire-retardant properties: PU Yingpao from the fire Zixi carbonation; EPS, XPS and high-temperature event of fire and metal, resulting in falling wall.
7, environmental performance: PU foam can be used in fluorine-free or semi-fluoride foam, and XPS, EPS difficult to achieve, mostly using Freon foam, volatile gases damage the ozone layer, causing pollution of the atmosphere
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