What Are the Differences Between PU and PIR Sandwich Panel?
PU sandwich panel and PIR sandwich panel are both sandwich panels and important products of the sandwich panel production line. So what are the characteristics of these two different sandwich panels? What's the difference between them?
PIR foam and PUR polyurethane foam are two completely different thermal insulation materials, but since they have the same or similar reaction groups, that is, the raw materials used are the same or similar, they are called sister products. PIR is called polyisocyanurate acid-modified polyurethane. It is made of polyurethane foam modified by polyisocyanurate acid. It has a great difference in performance between polyisocyanurate and polyurethane. However, due to the fact that there are few factories that control PIR technology, the two kinds of foams are fundamentally indistinguishable from shape. Many people mistaken that PIR is also polyurethane foam. In fact, there is a big difference between the two. The full name of PIR, "polyisocyanurate acid-modified polyurethane", is too long to memorize, so we usually call it PIR foam or polyurethane PIR foam, and call the regular polyurethane foam polyurethane PUR foam (or PU foam) to show the difference.
PU sandwich panel, also known as polyurethane sandwich panel, polyurethane composite panel and polyurethane energy-saving panel, is the polyurethane insulation sandwich panel for building. The product is a double-layer colour steel plate with polyurethane rigid foam as an insulation layer. It is usually used in the wall and roof enclosure system of industrial plants, logistics storage and integrated houses.
- PIR sandwich panel?
PIR sandwich panel, also known as polyisocyanate sandwich panel, is a foaming material made by reaction of isocyanate with polyether after the catalyst. Its physical and fire resistance are better than those of general polyurethane. It is an ideal organic low-temperature insulation material, which has small thermal conductivity, light shockproof and strong adaptability. It is widely used in oil refineries, chemical plants, ethylene, chemical fertilizer, cold storage and the construction industry.
(1) Difference in fire resistance:
PU foam: generally B3 grade, by adding flame retardants, it can reach B2 grade.
PIR foam: generally B2 grade, by adjusting the concentration of polyisocyanurate acid ring and other formula technology, it can reach the B1 level, and the oxygen index can reach more than 35%.
(2) Difference in thermal insulation properties:
PU foam: the thermal conductivity is generally 0.022 to 0.026 W/mK (25 degrees Celsius).
PIR foam: thermal conductivity can be as low as 0.018 W/mK (25 degrees Celsius).
(3) Difference in bulk density:
PU foam: generally achieve 35-45kg/m3, in order to achieve satisfactory strength requirements.
PIR foam: generally achieve 45-55kg/m3, in order to achieve satisfactory strength requirements.
(4) Difference in temperature range:
PU foam: below 110 degrees Celsius.
PIR foam: it can reach 205 degrees Celsius.
(5) Difference in water absorption:
PU foam: generally 2.5 to 3%.
PIR foam: up to 0.9%.
With 53 years' experience, Jinggongis specialized in manufacturing high-qualitysandwich panel machinery, feel free to contact!
Send product request
Other supplier products
 |
Cut To Length Line | This china cut to length machineis special equipment for uncoiling, leveling, cutting and stacking the steel sheet according to the requirement of ... |
 |
CNC Flame Cutting Machine | The flame cutting machineis a multifunctional thermal auto-cutting device combined microcomputer controlling, precise machinery and oxygen-acetylen... |
 |
Sandwich Panel Line | Sandwich panel lines are widely applied in the protection and decoration of outside wall for tall building and first-class office building. Sandwic... |
 |
Floor Deck Forming Machine | Jinggongis a professionalfloor deck machinemanufacturer that has many years' experience and a lot of successful cases. We have got many positive re... |
 |
What are the Specifications of Foam Sandwich Panels and Rock Wool Sandwich Panels in the Sandwich Panel Machine? | What are the Specifications of Foam Sandwich Panels and Rock Wool Sandwich Panels in the Sandwich Panel Machine? What are the rockwool sandwich... |
Same products
 |
DM-16BF DM-18BF New cover Electric Sprayer | Seller: Zhejiang Huaqi Information Technology Co., LTD | The Electric Knapsack Sprayer is a game-changer in the field of agricultural pest control. Engine... |
 |
Simple Round Breeding Cage | Seller: Zhejiang Huaqi Information Technology Co., LTD | The Simple Round Breeding Cage features a durable and lightweight construction, making it suitabl... |
 |
Syria-liquid nitrogen container for cell storage-liquid nitrogen level gauge | Seller: Henan Tianzhidao Biological Technology Co., Ltd | Precise experimental conditions and safe sample storage are key elements for the smooth developme... |
 |
Italy-liquid nitrogen cell storage tank-liquid nitrogen tank level indicator | Seller: Henan Tianchi Instrument & Equipment Co., Ltd. | Precise experimental conditions and safe sample storage are key elements for the smooth developme... |
 |
Egypt-cryogenic cell storage-liquid nitrogen level monitors | Seller: Henan Tianzhidao Biological Technology Co., Ltd. | Precise experimental conditions and safe sample storage are key elements for the smooth developme... |
