polyisocyanurate foam insulation board, referred to as PIR board, is a sandwich board made of PIR as the insulation core material
and double-sided color steel. It uses the excellent self-adhesiveness of the PIR foaming process and is continuously formed on an
automated production line. It has high dimensional stability and high flame retardancy
THE DIFFERENCE BETWEEN PIR AND PUR
PUR and PIR are both types of rigid polyurethane foam, but there are significant differences in their chemical and physical properties.
Polyurethane rigid foam is mainly composed of polyols and isocyanates. Polyols are further divided into polyether polyols and polyester
Polyurethane rigid foam is mainly composed of polyols and isocyanates. Polyols are further divided into polyether polyols and polyester
polyols. The product produced by the reaction of polyether polyols and isocyanates is PUR, while polyester polyols and isocyanates undergo trimerization to produce polyisocyanurate (PIR).
The production process of PUR and PIR is different, and the product performance may vary. PIR foam has more excellent and stable
The production process of PUR and PIR is different, and the product performance may vary. PIR foam has more excellent and stable
performance. Compared with PUR foam, PIR foam with the same density has much higher compressive strength than PUR.
PIR has better flame retardancy and low smoke properties than PUR. Therefore, it is mainly used for building insulation.
PIR has good heat resistance. It can be used for a long time in an environment of 150 ℃, with a size change rate of less than 1%. The
PIR has better flame retardancy and low smoke properties than PUR. Therefore, it is mainly used for building insulation.
PIR has good heat resistance. It can be used for a long time in an environment of 150 ℃, with a size change rate of less than 1%. The
temperature is higher for short-term use. If ordinary polyurethane rigid foam is used at this temperature for a long time, its strength will
gradually decline, and its appearance and size will also change.
