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

	Seamer	Our panel seameris the auxiliary equipment that is specially designed for overlapping and seaming panels for roll forming machine. It is easy to op...
	Auxiliary Equipment	Here is the different types of auxiliary equipment: curving punching forming machine, filming and cutting machine, slitter, uncoiler, stacker and s...
	PU/PIR Continuous Sandwich Panel Production Line	Continuous pu sandwich panel machine chinaPIR Sandwich Panel Production Line, also called polyurethane sandwich panel manufacturing linemachine, is...
	C/Z Purlin Roll Forming Machine	Thec purlin roll formercan form hot/cold rolled metal strip through leveling, cold roll forming, punching and cutting off to produce C type or Z ty...
	CNC Flame Cutting Machine	The flame cutting machine for saleis a multifunctional thermal auto-cutting device combined microcomputer controlling, precise machinery and oxygen...

Все товары поставщика

Похожие товары

	DM-16BF DM-18BF New cover Electric Sprayer	Продавец: 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	Продавец: Zhejiang Huaqi Information Technology Co., LTD	The Simple Round Breeding Cage features a durable and lightweight construction, making it suitabl...
	Сирия - Контейнер для хранения жидкого азота - Указатель уровня жидкого азота	Продавец: Хэнань Тяньчжидао Биотехнология Лтд.	Точные условия эксперимента и безопасное хранение образцов являются ключевыми элементами для бесп...
	Италия-сосуд дьюара для лаборатории-указатель уровня жидкого азота	Продавец: Henan Tianchi Instrument & Equipment Co., Ltd.	Точные условия эксперимента и безопасное хранение образцов являются ключевыми элементами для бесп...
	Египет-дьюары для лаборатория-монитор уровня жидкого азота	Продавец: Henan Tianzhidao Biological Technology Co., Ltd.	Точные условия эксперимента и безопасное хранение образцов являются ключевыми элементами для бесп...