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rexco mold releases for
glass reinforced concrete / glass fibre reinforced concrete (grc / gfrc) |
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Glass Reinforced Concrete (GRC) or Glass Fiber
Reinforced Concrete (GFRC) is a type of fiber reinforced concrete used in
building façade panels and architectural decoration. Mold or form
substrates range from wood to fiberglass to CNC milled urethane and
polystyrene foams. Form releases aid in a clean release of the part from
the mold while offering protection for the mold surface. Fragile mold
surfaces including rigid foams and elastomeric rubbers can benefit from
the use of release agents through reduction of abrasion from aggregates
and demolding and chemical attack. Rexco Mold Care Products offers the
following mold releases suitable for GRC/GRFC that are easy to use and
will aid in clean part removal, extended mold service and enhanced part
detail. Note that wax based mold releases are sacrificial in nature and
will transfer to the part surface leaving a protective coating. Normal
acid bath or sandblasting processes will remove wax transfer that may
impede painting or coating operations.
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Marbalease® slurry wax
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Marbalease®
Slurry Wax is a
semi-paste mold release wax, water-white in color and silicone-free used to
prevent the unwanted bonding of the composite material to the mold/tooling
and assists in the removal of the part from the mold. Typical application is
with a medium density bristle brush. Paint an even coating of Marbalease®
Slurry Wax on mold surface and allow to dry. Apply a second coat of
Marbalease® Slurry Wax and allow to dry to the touch. Not intended to be
polished to a shine. Avoid excessive build up of release in corners and
decorative textures to prevent loss of detail. Clean up with mineral spirits
or with TSP (trisodium phosphate) solution and scrub brush or ScotchBrite
pad. |
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Marbalease® polymer concrete release
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Marbalease® Polymer Concrete Release
is a fast-drying solvent-based liquid mold release made from a blend of
hydrocarbon and micro-crystalline waxes. Packaged in durable 5-gallon
containers with a convenient pour spout, this liquid wax is an economical
single-use release for use on most mold substrates and with a variety of
room temperature cure matrices including polyester and vinylester resins or
Portland cement. With a high flash point of >61 °C Marbalease® Polymer
Concrete Release is not regulated for air, ocean or ground transportation. A
fast-drying liquid mold release wax designed for polymer concrete and GFRC
applications for use on polyester, elastomeric, metal and expanded or
extruded foam molds. Low viscosity liquid formulation that allows for spray
or easy brush on application. Mix well before use as solids may settle in
storage. Spray, wipe or brush on an even coat of Marbalease® Polymer
Concrete Release to mold surface including flanges, edges and supports that
may come in contact with matrix. Allow to dry. For initial part apply a
total of three coats, allowing to dry between coats and before casting the
first part. Apply additional coats as needed for each additional part cast.
Clean up with mineral spirits or with TSP (trisodium phosphate) solution and
scrub brush or ScotchBrite pad. |
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partall® power liquid mold release
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PARTALL® POWER Liquid Mold Release is
a nonhazardous water-based polymeric external mold release that gives a
matte finish (non-cosmetic finish) to parts and aids in the casting of Glass
Fiber Reinforced concrete (GFRC). It is designed for use on most mold
substrates including expanded and extruded foams, FRP/GRP composite, glass,
aluminum and steel. This product provides multiple releases, ease of
application, and minimal fouling of tooling during processing. Ideal for
spraying but may be brushed, wiped or rolled on mold surface. Nonflammable,
nonhazardous. Using a traditional or HVLP spray gun apply an even coating of
PARTALL® POWER Liquid Mold Release to form. Allow to dry. Apply three coats
allowing to dry between each before casting the first part; no polishing
required but polishing will give a smoother finish to part. Reapply for each
part as required. Formulation will not interfere with post-finishing
operations. Alternative application is to brush or wipe on initial PARTALL®
POWER Liquid Mold Release to form, allow to dry and then spray additional
coats as required for continued part casting. |
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formula five®
matte top coat
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Formula Five® Matte Top Coat is an
extremely durable solvent-based semi-permanent mold release for non-cosmetic
part production; will maintain a matte finish on parts made from matte
finish molds; and aids in the casting of Glass Fiber Reinforced concrete (GFRC).
Apply with spray equipment or soft density solvent resistant paint brush
being careful not to over saturate polystyrene surfaces as solvent carrier
may damage form surface. Build up three coats of Formula Five® Matte Top
Coat allowing each coat to cure, up to 15 minutes at ambient temperature,
before applying the next and before casting first part. Will not transfer to
finished part or interfere with post-finishing or bonding operations.
Minimal mold buildup to reduce loss of detail. |
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©2001 REXCO All Rights
Reserved, Revised December 31, 2009
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