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Reactive curing mechanism |
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Examples of applying
Acrysirup |
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Performance test data |
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| Acrysirup’s reactive curing mechanism is a free
radical polymerization chemical process. A hardener (polymerization
initiator, BPO-50) is added to Acrysirup, generating free radicals.
The resulting chain reaction and heat causes the resin to quickly
harden. Special fillers do not affect the reaction. |
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| Paraffin wax is added to Acrysirup so that hardening
will not be impeded by free radicals reacting to oxygen in the
air. When Acrysirup with added hardener is applied to a surface,
the paraffin wax rises to the top, forming a surface layer and
preventing free radicals from being exposed to oxygen. This
enhances the hardening reaction, causing a more rapid hardening.
It is important to note that when performing this process indoors
with poor ventilation, or when ground temperature is 35℃ or
higher (during the summer with an atmospheric temperature of
25℃, ground temperature receiving direct sunlight can exceed
35℃), the wax layer will not form, impeding the hardening process. |
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| Since methylmethacrylate (MMA) melting or swelling
on a surface interferes with the hardening process, these effects
need to be eliminated. For example, the use of paint (especially
water-based paint), resin cement paste, spray-on materials,
newly installed air-conditioners, adhesives, etc. should be
avoided. |
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| The appropriate amount of hardener to add is
determined by surface temperature at the time of application.
The required amount of hardener for primer corresponds to the
amount that hardens in 20 to 30 minutes and for base coat and
top coat corresponds to the amount that hardens in 30 to 50
minutes. The period of application is about half the hardening
time. This time range is also ideal for optimizing physical
properties: a larger amount will cause more rapid hardening,
a smaller amount slower hardening. The resin will not harden
at all with an excessively small amount. |
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| Applying to low temperature (5℃ to -30℃) surfaces
requires using accelerator DR-AC-102 with the hardener. Hardening
will not occur when adding 7% or more of hardener and accelerator
to the mixture; be sure to add less than 7% to the mixture. |
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| The Acrysirup-filler ratio depends on the hardening
conditions, workability, finishing, and other factors for the
particular application. Adding more than the standard amount
causes unsatisfactory hardening. This depends on whether or
not Acrysirup is deposited in spaces between filler; when there
are empty spaces oxygen will impede hardening. |
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