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Performance comparison between foamed glass and rigid polyurethane foam by lee ryan
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Performance comparison between foamed glass and rigid polyurethane foam by LEE RYAN
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| Article Posted: 11/22/2012 |
| Article Views: 123 |
| Articles Written: 234 - MORE ARTICLES FROM THIS AUTHOR |
| Word Count: 408 |
| Article Votes: 0 |
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Performance comparison between foamed glass and rigid polyurethane foam |
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Press Release,Science & Technology,Writing
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Foam glass Foam glass uses plate glass as the main raw material, after crushed, carbon-doped, sintered foam and annealing cooling of processing obtained. It has a porous structure, the porosity of up to 80% to 90%; moreover, the pores are independent airtight structure, which has a good thermal insulation property. Foam glass as insulation materials has special advantages: High mechanical strength, itself can play a moisture-proof, fireproof and anticorrosive role; not only used for insulation, but also against the cold. In addition, it has good workability, and can produce colored products. Its use temperature range is -200 to 400 ?. According to the different densities of foam glass products, it can be divided into 150 and 180 two varieties of the product, products in which density is less than or equal to 150 kg/cubic meter is No. 150, the product of the density between 151 ~ 180kg/cubic meter is No. 180; according to different shape of products divided into flat and tube. The foamed glass can be used as the thermal insulation of the building envelope, also applies to the precipitator and cold storage etc. of insulation. It can also be used in the construction noise engineering. Rigid polyurethane foam The polyurethane rigid foam is as polyether or polyester polyol and polyisocyanate as main raw materials, plus catalyst, foam stabilizer and chlorofluorocarbon blowing agents and so on, after mixing and stirring to produce a chemical reaction to form foam. Bore of the obturator rate achieves 80% to 90%, a density of 30 ~ 60kg/ cubic meter, small absorbent. The thermal conductivity coefficient is smaller than the air. High strength, a certain amount of self-extinguishing, which used to do the low-temperature range of insulation, the temperature is generally from -100 to 100 ° C. When applications, it can be prefabricated to plate or shell and tube-like products by prefabricated factory. Because it can be foaming and curing at room temperature, so it can be sprayed in the field or perfusion foam, what is currently the most widely used organic insulation materials. Its main weakness is: expensive, shortage of raw materials, poor heat resistance and fire resistance, when the oxygen index of the flame-retardant material is less than 30, they lost the use of security. Zhangjiagang Hope Import & Export Co.,Ltd specialize in manufacturing all kinds of foam and sponge products, mainly are Wood floor underlay, Foam tape, adhesive foam board and laminate floor underlay.
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foamed glass, rigid polyurethane foam, foam,
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