Polyurethanes Multi-component formulations

Industrial Solutions for the Production of Automotive Seats Using Polyurethane Multi-Component Formulations... 

Formulations for producing polyurethanes (PUs) by reaction injection moulding (RIM) usually contain mixtures of polyols and diols in order to achieve the desired properties in the moulded part. The present work forms part (1) of a systematic investigation into the effects of polyol blends and glass fibres on the physical properties of unfilled and filled PUs formed by RIM. In the case of unfilled PUs, by using a multi-component polyol mixture, it is possible to investigate the effects on properties of (a) polyol structure, molar mass and functionality, (b) the relative proportions of diol-based hard blocks and triol-based soft blocks and (c) polyol blend compatibility. The... 

Figure 32 The new Cannon Ax Head, specifically designed for multi-component polyurethane formulations. It can mix up to six chemicals all with a high-pressure...

Materials suitable for use as underwater adhesives include carefully formulated coldcuring thermosets such as Epoxide adhesives and Polyurethane adhesives. Such multi-component systems are not significantly affected by the presence of water in the uncured condition and convert from the liquid to the solid state via Chain polymerization in which two or more co-reactants form one polymeric product. The process does not involve the loss of solvents and does not require the presence of oxygen. 

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