PU sandwich panel performance:

1. Rigid polyurethane has low thermal conductivity and good thermal performance. When the rigid polyurethane density is 35 ~ 40kg / m3, the thermal conductivity is only 0.018g ~ 0.023w / (m.k), which is equivalent to about half of EPS, which is the lowest thermal conductivity among all insulation materials.

2. Polyurethane cold storage board has moisture-proof and waterproof performance. Rigid polyurethane has a closed cell ratio of more than 90%, which is a hydrophobic material. It will not increase the thermal conductivity due to moisture absorption, and the wall will not seep water.

3. Polyurethane cold storage board is fireproof, flame retardant and high temperature resistant. After the flame retardant is added, polyurethane is a self-extinguishing flame-retardant material. Its softening point can reach above 250 degrees Celsius, and it will only decompose at higher temperatures: In addition, polyurethane will foam in its foam when burning. The surface forms ash, which helps isolate the underlying foam. Can effectively prevent the spread of fire. Moreover, polyurethane does not generate harmful gases at high temperatures.

4. Due to the excellent thermal insulation performance of the polyurethane sheet, the thickness of the outer protective structure of the building can be reduced under the same thermal insulation requirements, thereby increasing the indoor use area.

5. Strong deformation resistance, not easy to crack, stable and safe finish.

PU sandwich panel connection:

The cold storage board is connected to the purlin by self-tapping screws and plug-in connection.

Cold storage board parameters:
◆ Length: ≤5.95㎜ or ≤11.95㎜
◆ Thickness: 75mm,100mm, 120mm, 150mm, 200㎜,250mm,
◆ Effective width: 1000㎜
◆ Conductivity: 0.019kal / mh ℃
◆ Average density: 38-55㎏ / ㎡
◆ Compressive strength: ≥0.2MPa
◆ Max working temperature: 90 ℃
◆ Minimum working temperature: -120 ℃

Cold storage is divided into the following three types:

1. Fresh storage room (the temperature of the fresh storage room is kept at 0 ℃, and the optimal thickness of the cold storage plate is 10 cm)

The fresh-keeping storehouse keeps the original quality and freshness of some agricultural products to the maximum extent, that is, the fresh agricultural products, after being stored for a period of time, they are still fresh or fresh when they are just picked.

2. Refrigerator (the temperature of the refrigerator is kept at -18 ℃, and the suitable thickness of the refrigerator board is 15 cm)

The refrigerator is mainly used for the constant temperature storage of food, dairy products, meat, aquatic products, poultry, fruits and vegetables, cold drinks, flowers, green plants, tea, pharmaceuticals, chemical materials, electronic instruments, etc.

3. Freezer (The temperature of the freezer is kept at -38 ℃, and the suitable thickness of the freezer board is 20 cm)

Freezer cold storage is mainly used for the freezing and processing of food, medicine, and machinery. It uses artificial refrigeration to maintain a certain low temperature in the room.