The effect of moisture on the properties of thermoplastic urethane elastomers in molten state
The effect of water content on the degradation of thermoplastic urethane elastomers in molten state has been investigated. It Has been found that humidity adsorber by the granulate used in the injection moulding catalytically accelerates polymer decomposition and considerably decreases its rheothermal stability, melt viscosity, molecular mass and deteriorates the mechanical properties of the product. It has been stablished that a safe processing of molten elastomers is possible, if water content of the granulate used for injection moulding does not exceed 0.05%by weight.
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