| 摘要 |
<p>A method for controlling the formation of closed-cell expanded polymers, particularly polyurethane foams, obtained by a reaction system which comprises a mixture of at least one first component and one second component in the liquid state, comprising the step of detecting the weight of the system during the time of reaction of the first component with the second component in order to obtain a closed-cell expanded polymer, the weight loss of the expanding system being proportional to the volume increase that it undergoes.</p> |
