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!

Другие товары поставщика

	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...
	Steel Structure Machine	Jinggongcan produce various kinds of steel frame machineto match customer's requirements and develop the technology continuously. The main steel s...
	Rockwool Continuous Sandwich Panel Production Line	The rockwool sandwich panel production lineis one continuous and automatic line that integrates mechanism, electrical controlling, hydraulic system...
	C/Z Purlin Roll Forming Machine	The C/Z purlin roll forming machine can form hot/cold rolled metal strip through leveling, cold roll forming, punching and cutting off to produce C...
	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...

Все товары поставщика

Похожие товары

	Панама-Криохранилище для крови-Тележка для сосуда дьюара	Продавец: Хэнань Тяньчжидао Биотехнология Лтд.	В области биологических исследований контейнеры с жидким азотом являются одним из незаменимых уст...
	Бутан-Криохранилище эмбрионов-Подставка-тележка для сосуд дьюара	Продавец: Henan Tianchi Instrument & Equipment Co., Ltd.	В области биологических исследований контейнеры с жидким азотом являются одним из незаменимых уст...
	Бельгия-сосуд дьюара с большим горлом-подставка под сосуд дьюара	Продавец: Henan Tianzhidao Biological Technology Co., Ltd.	В области биологических исследований контейнеры с жидким азотом являются одним из незаменимых уст...
	ЮАР-сосуд дьюара для лаборатории-сигнализация жидкого азота	Продавец: Хэнань Тяньчжидао Биотехнология Лтд.	В сфере научных исследований важно сохранять исходное состояние образцов. Cосуд дьюара для лабора...
	Оман-Лаборатория сигнализации уровня жидкости Дьюара	Продавец: Henan Tianchi Instrument & Equipment Co., Ltd.	В сфере научных исследований важно сохранять исходное состояние образцов. Cосуд дьюара для лабора...