Smithsburg 7 â 10 Day Weather Forecast Summary: Moderate rain (total 10mm), heaviest on Mon afternoon. Freeze-thaw conditions (max 8.0Â°C on Mon afternoon, min -7.8Â°C on Thu night). Winds decreasing (fresh winds from the WNW on Tue morning, calm by Wed night).
TPU is a block copolymer consisting of alternating sequences of hard and soft segments or domains formed by the reaction of: (1) diisocyanates with short-chain diols (so-called chain extenders) and (2) diisocyanates with long-chain diols.
Elastomeric materials like TPU are differentiated by hardness. A durometer instrument is used to measure surface hardness for the Shore-A and Shore-D scales, the Shore-A scale being softer and the Shore-D scale being harder. Typically, TPUs are made in the 70A to 75D hardness range.