Analysis of the characteristics of polyurethane cold storage board
发布时间：
2014-06-28
Everyone knows that polyurethane is the main material for making cold storage panels, but do you know why polyurethane is used as the main material for cold storage panels? What are its characteristics. Below, Yanghu Refrigeration will briefly answer the characteristics of polyurethane cold storage panels: 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), which is equivalent to about half of EPS, which is the lowest thermal conductivity among all thermal insulation materials at present. 2. Rigid polyurethane has moisture-proof and waterproof properties. The closed cell ratio of rigid polyurethane is 9
Everyone knows that polyurethane is the main material for making cold storage panels, but do you know why polyurethane is used as the main material for cold storage panels? What are its characteristics. Below, Yanghu Refrigeration will briefly answer the characteristics of polyurethane cold storage panels: 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), which is equivalent to about half of EPS, which is the lowest thermal conductivity among all thermal insulation materials at present. 2. Rigid polyurethane has moisture-proof and waterproof properties. The closed cell rate of rigid polyurethane is above 90%, which is a hydrophobic material, which will not increase the thermal conductivity due to moisture absorption, and the wall will not seep water. 3. Rigid polyurethane is fireproof, flame retardant and high temperature resistant. After adding flame retardant, polyurethane is a flame-retardant self-extinguishing material. Its softening point can reach more than 250 degrees Celsius, and it will only decompose at higher temperatures: in addition, polyurethane will burn in its foam when burning. Carbon deposits form on the surface, and this layer of carbon helps insulate the underlying foam. Can effectively prevent the spread of flames. Moreover, polyurethane does not generate harmful gases at high temperatures. 4. Due to the excellent thermal insulation properties of the polyurethane sheet, under the same thermal insulation requirements, the thickness of the outer protective structure of the building can be reduced, thereby increasing the indoor area. 5. Strong anti-deformation ability, not easy to crack, stable and safe finish. www.yanghuzl.com (Changzhou Yanghu Refrigeration Equipment Co., Ltd.). 6. The polyurethane material has a stable porosity structure and is basically a closed-cell structure, which not only has excellent thermal insulation performance, but also has good freeze-thaw resistance and sound absorption. The average lifespan of the rigid foam polyurethane insulation structure can reach more than 30 years under normal use and maintenance conditions. It can be achieved under normal conditions of use during the life of the structure, dry, wet or galvanic corrosion, as well as due to insect, fungal or algal growth or due to rodent damage and other external factors will not be damaged. 7. The comprehensive cost performance is high. 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 cooling costs. The cold storage board of polyurethane foam generally has these characteristics, I hope it will be helpful to everyone.
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