To introduce some knowledge about cold storage insulation board
Release time:
2021-09-06
To introduce some knowledge about cold storage insulation board There are two kinds of insulation boards for cold storage: white, black and white. The foaming process is basically the same, and the foam made is also very similar in appearance. However, the difference in white used will bring great differences in product performance, and if some inferior white is used, the effect of heat preservation will not be achieved.
To introduce some knowledge about cold storage insulation board
There are two kinds of insulation boards for cold storage: white, black, and two. The foaming process is basically the same, and the foam made is also very similar in appearance. However, the difference in white used will bring great product performance differences, and if you use some Inferior white will not achieve the effect of heat preservation.
Thermal insulation performance of 1. cold storage insulation board:
The primary requirement for polyurethane insulation materials used in cold storage is thermal insulation performance, but the quality of thermal insulation performance cannot be observed by the naked eye before actual use, and it is too late to observe the difference in power consumption. The company has adopted a large number of experimental tests to strictly control the material selection in order to achieve this goal.
1, the use of structural amine ether, reduce the thermal conductivity, improve the insulation effect.
2, all kinds of raw materials and formulas to minimize the moisture content, to avoid water foaming lead to poor insulation performance.
3. The main material polyether is selected from the products of large manufacturers that have undergone strict post-processing. Compared with the polyether of large manufacturers without post-processing, the foam foam has high hole uniformity, thin foam hole wall, and thermal insulation performance is obviously better than that of thick wall and large hole. Ordinary foam.
4, tasteless amine catalyst, effectively adjust the balance of the foaming-gel reaction, so that the coating between the skin thinning, is conducive to the performance of the cold storage insulation material.
5. Without the use of ordinary polyester polyols, these control measures have achieved quite good results. Compared with some cold storage of a customer in Changzhou, the cold storage using white materials is significantly lower than that of other manufacturers using white materials.
Foaming dimensional stability of 2. cold storage insulation board:
Cold storage of polyurethane foam material in the rapid change in temperature or long-term at low temperature will appear dimensional changes (usually shrinkage), dimensional changes often lead to foam rupture or fall off, which will inevitably affect the normal use of cold storage, in addition to regular simulation performance testing, but also pay attention to the selection of materials control.
3. cold storage insulation board life:
In addition to the initial basic performance of polyurethane foam, the performance of the foam aging is also one of the important indicators, white fabric preparation, part of the polyester material using surface foam toughness, impact resistance is good, but in the freezer after a period of time will become brittle, not impact, collision.
In addition, according to the different polyester structure foam, poor hydrolysis resistance of the foam will also affect the life of the foam; the use of polyether structure, the initial slightly brittle, but generally a few days after the brittle disappear, then long-term to maintain the stability of the cold storage insulation material.
4. cold storage insulation board to send the number of recommendations:
Cold storage investment is a long-term investment with high yield. High delivery volume can indeed reduce the initial investment, but it is necessary to master certain limits. Long-term energy consumption and initial investment should be comprehensively considered. Because the thermal insulation effect of polyurethane freezer thermal insulation material is related to volume weight and parabolic linearity, a large number of studies show that the foam volume has good thermal insulation performance when it is 36~40km/m3, therefore, the circulation recommend of constant temperature cold storage is 22~23 square/ton.
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