The development trend of the solder industry is improving. Hard solder and soft solder are the two major market segments.
Solder refers to the filler metal material used to form welds during brazing. According to different melting points, it can be divided into soft solder (solder with a melting point lower than 450°C) a…
Effect of hard segments on polyurethane properties
The hard segment of polyurethane is composed of reacted diisocyanate Or it is composed of diisocyanate and chain extender, containing strong polar groups such as aryl group, urethane group, substitute…
Effect of hard segments on polyurethane properties
The hard segment of polyurethane is composed of reacted diisocyanate Or it is composed of diisocyanate and chain extender, containing strong polar groups such as aryl group, urethane group, substitute…
Application of polyurethane foam hard foam
Due to rigid polyurethane foam ( PUrigid foam) has the characteristics of light weight, good thermal insulation effect, and convenient construction. It also has excellent properties such as sound insu…
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