Introduction to polyurethane core materials
●New polyurethane core material: The raw materials, a combination of polyether (white material) and isocyanate (black material), are mixed at a certain ratio through a high-pressure machine and then evenly poured between the upper and lower layers of the panel, followed by lamination and foaming.
●Its density is 40kg/m3, thermal conductivity coefficient is 0.021w/m.k, water repellency >98%, combustion performance B1, B2, B3 levels, with prices ranging from high to low.
●Combined polyether: Commonly known as white material. It is made from a mixture of polyether polyols, catalysts, foaming agents, flame retardants, and other components. Domestic brands include Wanhua Chemical and Wanhua Rongwei; international brands include BASF, Huntsman, Bayer.
●Isocyanate: Polymer MDI (methylene diphenyl diisocyanate), commonly known as black material, with major brands being Wanhua Chemical, BASF, Bayer, Huntsman.

Characteristics and advantages of polyurethane sandwich panels

① The panels are uniform and stable with excellent thermal insulation and waterproof performance;
② Good airtightness (commonly used in cold storage);
③ Lightweight with an attractive appearance, effectively solving temperature differences in the refrigeration industry;
④ Easy and quick installation, can be resized according to needs;
⑤ Classified as B-level fireproof material;
⑥ Good surface flatness;
⑦ Superior water tightness;
⑧ No cold bridge phenomenon;
⑨ Lightweight structure;
⑩ Environmentally friendly and healthy