The density of polyurethane plate is not the higher the better, but the appropriate density should be selected according to the specific application needs. The density has an important effect on various properties of polyurethane plate, including compressive strength, thermal conductivity, flexibility and so on. Here is an analysis of the effect of high or low density:

1. Advantages of high-density polyurethane board:

- Higher compressive strength: high-density polyurethane panels have higher compressive strength and can withstand greater external forces without deformation, so they are suitable for load-bearing structures or applications requiring high strength support.

- Good dimensional stability: high-density polyurethane panels have better dimensional stability in temperature changes and long-term use, and are not easy to shrink or expand.

- Lower water absorption: Due to its tighter cellular structure, high-density polyurethane panels generally have lower water absorption and better moisture resistance.

2. Disadvantages of high-density polyurethane board:

High thermal conductivity: With the increase of density, the thermal conductivity of polyurethane panels will also increase, which means that its thermal insulation performance may be slightly reduced.

- Higher cost: high-density polyurethane panels usually have more material and higher cost, so in the case of a limited budget, choosing high-density panels may not be cost-effective.

- Less flexibility: Increased density is often accompanied by a material becoming harder and less flexible, which can be a problem in some applications where higher flexibility is required.

3. Advantages of low density polyurethane board:

- Better thermal insulation performance: Low-density sheets have lower thermal conductivity and usually have better thermal insulation, so they are suitable for occasions with high thermal insulation requirements.

- Light weight: Low density polyurethane panels are lighter, easier to install and transport, and suitable for lightweight building structures.

- Low cost: less material usage, relatively low cost, suitable for large area use.

4. Disadvantages of low density polyurethane board:

Low compressive strength: The compressive strength of low-density plates is weak, and it is not suitable for structures requiring high strength support.

Poor dimensional stability: During use, low-density plates may be more susceptible to changes in temperature and humidity, resulting in dimensional changes.

Conclusion:

The density selection of polyurethane plate should be based on the application requirements. If high strength and low water absorption are required, high-density polyurethane plates should be selected; If the main purpose is insulation and no weight bearing is required, a low density polyurethane board may be more suitable. Various applications have different density requirements for polyurethane panels, and it is not possible to simply say that the higher the density, the better, the key is to find a balance point suitable for specific applications. After nearly 25 years of experience and exploration, Changzhou Jiangnan Chengxin refrigeration equipment factory has accumulated rich practical experience, strong technical strength and a mature and well-trained staff team, with enterprising and scientific management team, laid a solid foundation for stable and reliable product quality. Our Jiangnan cold storage board has been exported to the north and south, and some exported to Australia, Russia, Thailand, Kazakhstan and other neighboring countries. In addition, "Jiangnan Integrity" also implements complete engineering services from design, construction and commissioning. In Shanghai, Shijiazhuang, Harbin and other provinces and cities have Jiangnan integrity of large cold storage projects.