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Foams ageing process

The results of DMA Tg-value determinations on these foam samples during ageing at 160°C, are listed in Table 4.2. These results show three different stages in the ageing process of these foams ... [Pg.107]

As semi-hard PUR foams age, chain cleavage may occur, and changes in the arrangement and organization of the hard and soft phases are also seen. Both processes influence the mechanical properties of the foam which, however, does not always have to be detrimental. It can often be observed, for example, that strain in the foam increases at first during aging and does not decrease until later in the aging process [702],... [Pg.531]

See other pages where Foams ageing process is mentioned: [Pg.333]    [Pg.433]    [Pg.674]    [Pg.333]    [Pg.180]    [Pg.105]    [Pg.102]    [Pg.206]    [Pg.101]    [Pg.103]    [Pg.177]    [Pg.32]    [Pg.34]    [Pg.64]    [Pg.191]    [Pg.639]    [Pg.28]    [Pg.533]    [Pg.100]    [Pg.65]    [Pg.426]    [Pg.333]    [Pg.480]    [Pg.267]    [Pg.89]    [Pg.98]    [Pg.99]    [Pg.126]    [Pg.480]    [Pg.333]    [Pg.146]    [Pg.165]    [Pg.358]    [Pg.468]    [Pg.225]    [Pg.717]    [Pg.71]    [Pg.74]    [Pg.74]    [Pg.709]    [Pg.565]    [Pg.180]    [Pg.280]    [Pg.281]    [Pg.23]    [Pg.376]    [Pg.95]    [Pg.326]   
See also in sourсe #XX -- [ Pg.255 ]



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