SPU is a series of polyurethane waterproof coatings produced by Oriental Yuhong, including one-component polyurethane, high-strength polyurethane and polyurethane sealant. , are distinguished by SPU-XXX. SPU is the trademark of Oriental Yuhong. A product in SPU series is subject to its own material product standard. Polyurethane waterproof coating (one-component and two-component) is based on GBT 19250(2003), which is the most commonly used polyurethane waterproof coating. Polyurethane sealant, high-strength polyurethane waterproof coating, environment-friendly polyurethane waterproof coating, etc. According to different uses, the corresponding material standards are also implemented, some of which implement national or industry standards, some implement special standards (such as railway department standards), and some implement manufacturer standards.
PU is the general name of polyurethane, sponge, polyurethane foaming agent and so on all belong to PU, and the whole polyurethane family is very huge.
SPU in the market is very messy, some are not polyurethane at all, and some use JS as SPU. I think in this case, we should first find the materials we want, such as I-type one-component polyurethane waterproof coating, and then buy and test it according to the standards. As for SPU, CPU, FPU, etc. Everything is possible. These are all commodity names, which are easily confused. Only by matching materials according to standard names can we cope with all kinds of changes.