Specializing in phenolic pre-insulate duct panel!

Pu heat preservation plate material of choice

by:Ventech     2020-12-06
Recently, many friends called information polyurethane insulation board is a kind of what kind of insulation material, its heat preservation effect? Today small make up to you what is said about its raw materials, you will understand its strengths. How will know its heat preservation effect.

polyurethane insulation board material choose

isocyanate ( PAPI) Component selection of yantai wanhua PM - 200, the components are fixed. With the increase of dosage of PAPI, the crosslinking density of foam increases, the strength and stiffness increases, but if excessive dosage of PAPI, bubble will be brittle, core material is easy to crack.


first choose polyether polyols, the most important of polyether polyols is one of the basis of the rigid polyurethane raw materials, it affect the physical and mechanical properties of foam core material, dimension stability and foaming process performance. According to the starting dose, hydroxyl value and viscosity of polyether type, with potassium ion content in polyether choose low.


foam stabilizer selection emulsifying ability is advisable. It mainly controls the bubble hole size, maintain the stability of the bubble hole, prevent bubble hole collapse. Organic silicone foam stabilizer has good effect, its usage can be in 1. 5 ~ 2. 5 ( The mass fraction) Regulate the kinds, dosage of foaming agent of polyurethane hard foam density, strength and other physical performance has a direct impact.


foaming agent not only can adjust and control the density of foam products and performance, can also lower the viscosity of the composite polyether, improve its foaming process, the liquidity bubble, bubble forming. Considering the need of sustainable development strategy, now has restricted use of CFC fluorinated hydrocarbons seriously ecological environment destruction, using alternative foaming agent.



flame retardants can improve the fire resistance of foam plastic, but the flame retardants in the foaming process of foam has the damage, on the premise of ensuring better flame retardant effect, ensure the use of plastic foam performance and dimensional stability.

I believe you saw this article will have a certain knowledge of polyurethane insulation board, if you are interested in polyurethane insulation board, can continue to focus on our website, we will be updating the related knowledge about pu heat preservation material.

our company is one of the excellent pu heat preservation material production factory, first-class production, research and development team, to provide you with high quality pu heat preservation material is has always been our pursuit, welcome to choose and buy!
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Hi,this is karen from VENTECH CHINA,SO NICE TO CONTACT WITH YOU,FOR MORE INFORMATION,PLEASE CONTACT MY EMAIL :KAREN@CHINAVENTECH.COM OR INSULATION@CHINAVENTECH.COM. WILL REPLY YOU ASAP.THANKS IN ADVANCE