Jinan Guozhen Machinery Equipment Co., Ltd.

& Supply year Huai'an area cold storage exterior wall insulation equipment polyurethane spraying machine foam service life: In addition to the basic performance of the foam in the early stage, the performance deterioration of the foam is also a very important indicator. When preparing white materials, although the use of certain polyester materials makes the foam have good toughness and impact resistance on the surface, it will become brittle after being used for a period of time and no longer resistant to impact and collision. In addition, some polyester materials The poor hydrolysis resistance of structural foam will also affect the service life of the foam. We use polyether structure. Although it is slightly brittle in the early stage, the brittleness usually disappears after a few days, and then it can maintain stable performance for a long time. At the same time, our high-quality polyether system foam has higher closed cells. The rate can reduce the water absorption rate, reduce the water vapor permeability, and avoid the occurrence of icing and bulging in the foam and its connection with the interface. These are the basis for extending the service life of the foam.
4. Flame retardancy:
The flame retardancy of polyurethane foam materials used for cold storage insulation is very important, but in the current polyurethane flame retardant technology, the improvement of flame retardancy is often at the expense of thermal insulation performance. At the same time, as a porous organic foam material, no matter how good its flame retardancy (Class B) is, it is also flammable. When basic fire prevention and protection can be done, the most necessary thermal insulation should not be ignored in order to emphasize flame retardancy. performance.
5. Suggestions on the number of units:
Cold storage investment is a long-term, profitable investment. A high number of units can indeed reduce the initial investment, but certain limits need to be grasped. Considering the long-term performance and initial investment, a large number of studies have shown that the thermal insulation effect of polyurethane materials has a parabolic correlation with its bulk density. When the foam bulk density is ~kg/cubic meter, it has the most ideal thermal insulation performance. It is usually recommended to convert through empirical data. The number of cubic meters generated in the constant temperature warehouse is more suitable when it is ~ cubic meters/ton.
Finally, we carefully suggest that the key performance indicators of polyurethane insulation materials such as thermal insulation performance, dimensional stability, and service life cannot be seen, touched, or felt. There is only a thin line between good and bad. When choosing, please choose "high quality" first and then pay attention to "low price". Don't just pay attention to the superficial price!