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BAYPREG Brosch GB neu_A4.fh11 - BaySystems - customized ...

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10<br />

UNBEATABLE<br />

PROCESSING ADVANTAGES<br />

Long potlife<br />

Once the two components have been mixed together in a<br />

cup, it takes 3 – 10 minutes for the initial thermal reaction<br />

to start. The actual chemical reaction begins after 10 – 20<br />

minutes and ends with solidification after a further 3 – 5<br />

minutes (all figures are approximate). This means the<br />

mixture can be processed by hand for up to 25 minutes at<br />

ambient temperatures of between 20 and 23 °C.<br />

Compression mold<br />

Spray head<br />

Long open time for the impregnated fiber<br />

After application of the reactive mix using a 2-component<br />

spray machine, the impregnated fiber has an open time of<br />

up to 45 minutes at room temperature (20 – 23 °C). This<br />

means that the fiber can be further processed in this period<br />

without any loss of quality.<br />

Short mold residence time<br />

Introducing the impregnated fiber material into the heated<br />

mold triggers the controlled reaction of the 2-component<br />

system. The reaction is soon completed and the part cures<br />

very quickly.<br />

Low mold temperatures<br />

Under normal circumstances, a mold temperature of 80 °C<br />

is enough to ensure rapid, economical curing. However,<br />

because temperatures of up to 120 °C are also possible,<br />

the mold residence times can be shortened considerably<br />

if desired. In special cases – if, for example, heat-sensitive<br />

inserts or decorative films are being used – the mold<br />

temperature can be reduced to 65 °C, although the parts<br />

will then naturally have to spend longer in the mold in<br />

order to achieve top-quality results.<br />

No post-curing necessary<br />

Following removal from the mold and subsequent cooling,<br />

the composite part attains its final strength without any<br />

need for annealing. As a result, energy costs can be lowered.<br />

These energy savings, in combination with the shorter<br />

production cycles made possible by the reduced mold<br />

residence times, make an important contribution to costeffective<br />

production.

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