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.

2. 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!

Other supplier products

	High Speed Tile Forming Machine	This series of high-speed tile roll forming machineis a new-generational type roof tile roll forming machinewith high speed and high-efficient, inc...
	EPS Sandwich Panel Production Line	Main structure features ofEPS Sandwich PanelMachine 1) This EPS sandwich panel making machinehas the specification: nice appearance, low noise and...
	Precast Concrete Panel Production Line	As the main component in precast concrete components, the assembly part, connection, combination of cast-in-place reinforced Concrete structure, PC...
	H Beam Shot Blasting Machine	Hbeam shot blasting machineis designed and manufactured to clean the surface of the section steel. It is ideally suited for removing the rust, scal...
	High Speed Tile Forming Machine	This series of highspeed tile roll forming machineis a new-generational type roof tile roll forming machine with high speed and high-efficient, inc...

供应产品

Same products

	Intelligent Precision Glue Control System	卖方: 855005	Intelligent Precision Glue Control System The Golden Horse GM-4020 is an intelligent glue concen...
	JM-5416D Automatic Rigid Box Making Machine	卖方: 855005	JM-5416D Automatic Rigid Box Making Machine The JM-5416Dintelligent visual fully automatic box m...
	Positioning Machine JM-600B	卖方: 855005	Positioning Machine JM-600B The vision positioning machineis the core component for producing li...
	Automatic Feida Gluing Machine JM-600A	卖方: 855005	Automatic Feida Gluing Machine JM-600A Automatic Gluing Machineis used for gluing the cover pape...
	Automatic Grooving Machine JM-1200	卖方: 855005	Automatic Grooving Machine JM-1200 The JM-1200 Automatic Cross Grooving Machineis capable of bid...