The above information is about core material foam> core material foam. When the fire resistance test is carried out according to GB 9978-90, there is no obvious deformation of the test piece and no fire leakage. cannot be compared with it), It is also a soft foam plastic with good flexibility. It is more suitable for roof insulation than EPS board. Core material foam, PMI foam, high temperature resistant foam Is carbon fiber composite material toxic? The difference between carbon fiber products and FRP products.When used for pipelines (especially buried pipelines directly underground) and roof insulation, reliable waterproof and moisture-proof measures should be taken. Due to the low long-term water absorption of XPS board, it is especially suitable for inverted roofs and air-conditioning ducts. Insulation Materials. It also has good freeze-thaw resistance and better compression creep resistance.The compression performance is poor, and there is compression creep when used under pressure. It is not suitable for use as an internal insulation material. Suitable for low temperature pipes and air-conditioning ducts. The long-term use temperature can be as high as 200\u2103, and the intermittent temperature can be as high as 250\u2103.There is a problem of formaldehyde release. Although the water absorption rate is low, as an insulation material, it must not be used as a waterproof material. However, when Polymethacrylimide Foam Manufacturers one side of the EPS board is in a high temperature and high humidity environment for a long time, and the other side is in a low temperature environment and is sealed by materials with poor water vapor permeability; or when the roof waterproof layer fails, the EPS board may be severely damp, resulting in its thermal insulation performance Severely reduced.033\uff5e0. Suitable for filling and insulation of sandwich walls and hollow blocks. Polyethylene foam (PE) hardly absorb water and almost impermeable to water vapor, long-term use in a humid environment will not be affected by moisture, so the thermal conductivity can remain unchanged (EPS, PUR, PF, etc.