How much polyurethane PU foam does a solar insulation barrel need?

It depends on the diameter and length of the insulating cylinder.

Calculated by the formula: diameter+thickness * thickness * pi *70kg= the weight of the coated material (in fact, it is slightly smaller, because a part will be volatilized when a chemical reaction occurs).

Polyurethane is called polyurethane, which is the general name of macromolecular compounds with repeated carbamate groups in the main chain. It is formed by addition polymerization of organic diisocyanate or polyisocyanate with dihydroxy or polyhydroxy compounds. Polyurethane materials are widely used and can replace rubber, plastic and nylon. , can be used in airports, hotels, building materials, automobile factories, coal mines, cement plants, senior apartments, villas, landscaping, painted stone art, parks and so on.