Flexible Polyurethane Methyl Methacrylate
Joints, Membrane, and Flexible Mortar
Epoxy.com Product #6890
DESCRIPTION
Flexible Polyurethane Methyl Methacrylate (PUMMA) Product #6890 is a higher viscosity, 100% reactive, flexible methyl
methacrylate polyurethane hybrid resin used as a crack isolation or
waterproofing membrane under various Epoxy.com MMA Systems, or as a resilient mortar
or joint filler for numerous applications.
Flexible Polyurethane Methyl
Methacrylate (PUMMA) Product #6890 resists
cracking caused by horizontal substrate movement, providing a crack resistant,
resilient surface with superior performance in cold temperature environments.
Flexible Polyurethane Methyl Methacrylate (PUMMA) Product #6890 offers stress relieving properties for floor slabs
showing movement and/or vibration.
Flexible Polyurethane Methyl Methacrylate (PUMMA) Product #6890 is excellent for use as an intermediate membrane
layer or patching mortar in loading docks and ramps, equipment rooms, large
animal rooms, activity rooms, automotive and tooling industry, freezers,
coolers, bridge decks, roof decks, pedestrian walkways, parking garages, ship
decks, pool liners, pool decks, joint repair, food industry, dairies, beverage
industry, and numerous other industries and applications. Flexible
Polyurethane Methyl Methacrylate (PUMMA) Product #6890
Flexible Polyurethane Methyl Methacrylate (PUMMA) Product #6890 makes an
excellent expansion joint.
ADVANTAGES
- Crack
Resistant and Waterproofing Flexibility
- Elongation of 300%
- Reduces Noise
Created by Mechanical Vibrations
- May be Applied in Thickness of 1/16"-1/4"
- VOC Compliant (100% Solids), Meets USGBC LEED Requirements
CONSIDERATIONS
- For proper performance, follow recommended mixing/application guidelines.
- Concrete must be dry, free of dirt, waxes, curing agents and other foreign
materials.
- Do not store outside in direct sunlight, storage temperature must
be < 80°F. On or below grade installation must have an efficient vapor barrier
under the slab (minimum 10-15 mil).
- Moisture vapor transmission must be less
than 3 lbs per ASTM-F-1869 and less than 80% RH per ASTM F-2170 unless
Epoxy.com Resin
moisture mitigation system is used.
COMPOSITION
Flexible Polyurethane
Methyl Methacrylate (PUMMA) Product #6890 is a
100% reactive methyl methacrylate polyurethane hybrid resin.
COLOR SELECTION
Flexible Polyurethane Methyl Methacrylate (PUMMA) Product #6890 is
supplied clear (slight haze). Color packs are available for selected
colors. Color pack mix ratio is 1 quart pigment per 5 gallons resin. See
Epoxy.com MMA Color Card.
SURFACE PREPARATION
Surface preparation is
the most critical portion of any successful resinous flooring system. All
substrates must be properly prepared as outlined in
Epoxy.com Surface Preparation Procedures. In addition, All Epoxy.com MMA Flooring Systems require a
minimum surface profile of CSP 4-5, as outlined in ICRI Guideline 310.2-1997,
formerly named G-03732 (available from www.ICRI.org).
MIXING AND INSTALLATION
Flexible Polyurethane Methyl Methacrylate
(PUMMA) Product #6890 is typically used in
conjunction with fillers and aggregate and requires the addition of
MMA Hardener #695 to start the hardening process. The amount of hardener must be adjusted
to the respective surface temperature (see table). At temperatures below 40°F,
Epoxy.com 9101 MMA COLD TEMPERATURE ACCELERATOR must be used in addition to the amount
of hardener used at the 40°F or 30°F level.
| Temp. (°F) of Resin, Air & Floor Surface |
Hardener by Volume (oz.) Per Gallon of 9800 Resin |
Pot Life (min.) |
Hardening Time (min.) |
| +30°F |
10 vol. oz. |
Approx. 25 |
Approx. 75 |
| +40°F |
9-10 vol. oz. |
Approx. 25 |
Approx. 70 |
| +50°F |
8-9 vol. oz. |
Approx. 25 |
Approx. 65 |
|
| +60°F |
6-7 vol. oz. |
Approx. 20 |
Approx. 60 |
| +70°F |
5-6 vol. oz. |
Approx. 20 |
Approx. 50 |
| +80°F - 90°F |
5* vol. oz. |
Approx. 15 |
Approx. 45 |
| *Do not use less than 5 oz. MMA Hardener #695 by volume. |
| Consult with Epoxy.com Resin Technical Services if
performing mix ratio by weight instead of by volume. |
MMA COLD TEMPERATURE ACCELERATOR Product #696
At temperatures below 40°F, Cold Temperature Accelerator
Product #696 must be
used in addition to the amount of hardener used at the 40°F or 30°F level. As a
rule of thumb, add about ° oz by volume per gallon of resin @ 39° to 32°F, up to
2.0 oz by volume per gallon @ -20°F, increasing the quantity gradually in a
consistent linear progression as the temperature decreases. VERY IMPORTANT:
Cold Temperature Accelerator Product #696 MUST be added to the MMA resin
and thoroughly blended BEFORE adding the Epoxy.com #695 MMA HARDENER, or
hazardous decomposition may occur (i.e., violent foaming). Epoxy.com 696 MMA COLD TEMPERATURE
ACCELERATOR will cause yellowing, it is advised to use pigmented MMA resin
versus clear to reduce the appearance of yellowing, darker colors will be less
affected than lighter colors.
POLYURETHANE METHYL METHACRYLATE MEMBRANE SYSTEMS
Flexible
Polyurethane Methyl Methacrylate (PUMMA) Product #6890 MEMBRANE SYSTEMS are used for elastomeric decking, waterproofing, roof
decks, freezer floors, etc. Flexible Polyurethane Methyl Methacrylate
(PUMMA) Product #6890 can be mixed in various
formulations using Epoxy.com Self-Leveling Filler #78, or Mortar Blend
Aggregate #82,
depending on the applied thickness and intended use. Refer to Formulas
6890/1-4.
Consult with Epoxy.com Resin Technical Service for recommendations on the best
formula, thickness and system design to use for any particular project.
FORMULATION GUIDE - MEMBRANE SLURRY
| Typical Slurry Formula for 40 mil ° 125 mil Basecoat
Membrane (Formula 6890/1) |
| Material |
Weight |
Volume |
| Polyurethane MMA #6890 |
8.4 lbs. |
1.0 gallon |
| Self Leveling Filler #78 |
4-5 lbs. |
0.25-0.33 gallons |
| Pigment Pack (optional) |
N/A |
6.4 vol. oz. |
| MMA Hardener #695 |
Follow chart |
Follow Chart |
Add
hardener to the clear resin and blend; add dry filler powder and mix thoroughly
with jiffy mixer. Blend pigment and mix for 1-2 minutes until no lumps are
present. Apply mix to the primed surface using a gauge rake or notched trowel.
The above mixture will yield approximately 1.15 gallons of slurry. Coverage per
batch is:
| Yield* |
1.15 gallons slurry |
| Coverage: 1/16" |
28-30 ft2 |
| 1/8" |
13-15 ft2 |
*Note: Yield of mixed slurry will vary depending on mix design used.
| Polyurethane MMA #6890; Typical Slurry Formula for
125-195 mil Basecoat Membrane (Formula 9800/2) |
| Material |
Weight |
Volume |
| Polyurethane MMA #6890 |
8.4 lbs. |
1.0 gallon |
| Self Leveling Filler Product #78 |
7-8 lbs. |
0.5 gallons |
| Silica Sand 30-50 mesh |
6-7 lbs. |
0.5 gallons |
| Pigment Pack |
N/A |
6.4 vol. oz. |
| MMA Hardener #695 |
Follow chart |
Follow Chart |
Add hardener to the clear resin and blend; add dry filler powder and filler sand
and mix thoroughly with jiffy mixer. Blend pigment and mix for 1-2 minutes until
no lumps are present. Apply mix to the primed surface using a gauge rake or
notched trowel. The above mixture will yield approximately 1.5 gallons of
slurry. Coverage per batch is:
| Yield |
1.5 Gallon Slurry |
| Coverage: 1/16" |
36-38 ft2 |
| 1/8" |
17-18 ft2 |
| 3/16: |
13-14 ft2 |
*Note: Yield of mixed slurry will vary
depending on mix design used.
Formulation Guide - Joint Filler
| Typical Formula for Use as Joint Filler (Formula
9800/3) |
| Material |
Weight |
Volume |
| Polyurethane MMA #6890 |
8.4 lbs. |
1.0 gallon |
| Self Leveling Filler #78 |
4-5 lbs. |
0.25-0.33 gallons |
| Pigment Pack |
N/A |
6.4 vol. oz. |
| MMA Hardener #695 |
Follow chart |
Follow Chart |
| Yield = 1.15 gallons of mixed slurry |
Add hardener to the clear resin and blend; add pigment pack and filler powder
and mix thoroughly with jiffy mixer. Blend for 1-2 minutes until pigment is
thoroughly mixed and no lumps from filler are present. For joint filling,
transfer mixed resin to a pourable container or caulk gun. One gallon of
Polyurethane MMA #6890 slurry will yield 231 cubic inches, or fill an expansion/isolation
joint with dimensions of 1/2 inch x 1/2 inch x 77 lineal feet. Closed cell backer
rod should be used to support bottom of Polyurethane MMA #6890 joint filler.
APPLICATION MEMBRANE SYSTEMS
The fresh slurry coat or joint filler must
be applied over substrate primed with Epoxy.com 9112 MMA. Formulas 9800/1, 9800/2, and
9800/4 are applied with a gauge rake or notched trowel/squeegee. When using
formula 9800/1, apply in two layers, the first layer "neat" and the second layer
broadcast to excess with a wearing course of 20 mesh silica or colored quartz
aggregate. Formula 9800/2 may be installed in a single layer and must be
broadcast to excess with a wearing course of 20 mesh silica or colored quartz
aggregate.
Formula 9800/4 is applied in two layers, with polyester fleece
reinforcement imbedded into the first layer. Aggregate broadcast rates will vary
from 0.25-1.25 lbs/ft2 depending on type and size of aggregate, mix
design, and thickness of slurry. It is recommended to broadcast 20 mesh
aggregate or larger. Do not use broadcast aggregate smaller than 20 mesh or
the risk of random cure problems increases. Aggregate may be natural or
colored quartz, sand, aluminum oxide, emery, etc. Polyurethane MMA #6890
must be top coated or sealed with Epoxy.com 9528 MMA.
TROWELED
MORTAR SYSTEM
Polyurethane MMA #6890 MORTAR SYSTEM is used for patching damaged concrete
or asphalt in highways, bridge decks, pedestrian decks/walkways, roof decks,
freezer floors, etc. Polyurethane MMA #6890 can be mixed in various formulations using
blended mortar silica aggregate and pea gravel or other large aggregate for
thicker applications. Polyurethane MMA #6890 MORTAR SYSTEM may require a sealer such as
Epoxy.com 9528 or Epoxy.com 9526, depending on expected service conditions. Consult with
Epoxy.com
Resin Technical Service for recommendations on the best formula, thickness and
system design to use for any particular project.
FORMULATION GUIDE - TROWELED
MORTAR
Typical Batch Formula with Epoxy.com Blended Mortar
Aggregate
|
| Material |
% Parts by Wt. |
Typical Batch Wt. |
Volume |
| Polyurethane MMA #6890 |
14.0 |
8.4 lbs. |
1 gallon |
| Blended Mortar Aggregate #82 |
85.0 |
50 lbs. |
3.25 gallons |
| Pigment Pack |
N/A |
N/A |
6.4 vol. oz. |
| Hardener |
Varies with temp. |
Varies with temp. |
Varies with temp. |
| Yield*: -3.0 gallons Mortar (0.4 cu. ft.) |
Yield* -3.0 gallons Mortar (0.4 cu. ft.)
|
| Coverage 1/8" |
35 ft2 |
| 3/16" |
25 ft2 |
| 1/4" |
18 ft2 |
| 1/2" |
9 ft2 |
| *Note: Yield of mixed mortar will vary depending on
mix design used. |
IMPORTANT: Mortar mix design MUST yield
a resin-rich mortar with pourable consistency, which has a resin-rich surface
after troweling. A mortar with a resin-lean, dry consistency may have cure
problems.
The above mix design formulation permits installation up to 2.5 inches
in one placement. For thicknesses greater than � inch, additional aggregate may
be added to reduce the resin content and lower the shrinkage. The addition of up
to 75% additional aggregate allows for installation of up to 5 inches in one
placement.
Addition of Aggregate for Greater than 1/2 inch thickness.
Additional Aggregate per Gallon of Resin
|
| Thickness of Placement |
Aggregate Size |
Added Weight % |
Weight |
Volume |
Yield |
| <1/2 inch |
- |
- |
- |
- |
0.4 cu. ft. |
| 1/2 - 1 inch |
1/8" x 1/16" |
25% |
12.0 lb. |
0.9 gal. |
0.49 cu. ft. |
| 1 1/2 - 2 inch |
1/16" x 3/8" |
50% |
24.0 lb. |
1.8 gal. |
0.57 cu. ft. |
| >2 inches |
3/8" x 5/8" |
75% |
36.0 lb. |
2.7 gal. |
0.63 cu. ft. |
APPLICATION -
TROWELED MORTAR
Polyurethane MMA #6890 and hardener powder are mixed
and blended with the blended mortar aggregate for 3 minutes until no lumps
are present. Add the additional aggregates to extend the mortar if needed.
IMPORTANT: Mortar mix design MUST yield a resin-rich mortar, pourable
consistency, which has a resin-rich Polyurethane MMA #6890; surface after troweling. Apply mortar to the
primed surface using a trowel. If excessive resin forms on the surface of the
mortar while troweling, it is optional to lightly broadcast 20 mesh silica sand
into the resin. A mortar with a resin-lean, dry consistency may have cure
problems, resulting in isolated sticky areas that do not cure completely. Any
areas that do not cure hard must be removed, spot primed, and replaced with
resin-rich mortar before application of sealer (if used). Polyurethane
MMA #6890 mortar
may require a sealer suitable for the intended application. Consult with
Epoxy.com
Resin for recommendations.
PHYSICAL PROPERTIES - RESIN/SYSTEM
| Percent Reactive |
100%, zero VOC |
| Working Life, 50°F-70°F |
15-25 minutes, will vary w/temp. & amount of Hardener |
| Recoat Time |
55-75 minutes |
| Viscosity, cps |
600-800 cps |
| Weight per Gallon |
8.4 lbs. |
| Tensile Strength |
250 psi |
| Elongation at Break |
300%-resin, 100%-filled mortar |
CLEAN-UP
Clean tools and equipment with lacquer thinner or
MEK. Consult Material Safety Data Sheet for safety and health precautions.
MAINTENANCE
Polyurethane MMA #6890 is a basecoat resin or binder resin used with various Epoxy.com MMA Systems,
refer to specific system data sheet or sealer data sheet for recommended
maintenance.
STORAGE
Store in a cool and dry place, below 80°F, out of direct
sunlight. Do not store near open flame or food. Shelf life is 6 months in the
original unopened containers. After extended storage: Additives and fillers can
separate with storage, materials should be inspected for any visible signs of
settlement, polymerization, or paraffin coagulation (clumps, strands).
Thoroughly mix pails or drums (use a drum mixer, do not rely on rolling drum on
floor) and pour into new containers to inspect resin before use.
HELPFUL HINTS
Adequate cross ventilation should be provided. Good ventilation during the
processing ensures a good cross linking and hardening. Read, understand and
follow Material Safety Data Sheets and Application Instructions prior to use.
Use only as directed. If substrate and/or material temperature is above 90F, DO
NOT apply material.
TECHNICAL SERVICE
Epoxy.com Technical Support Department provide
services and consultations on material selection, specification,
troubleshooting, and other information on the proper repair and protection
of concrete surfaces. Epoxy.com Resin Sales/Technical Representatives are
available to assist you. Telephone (352) 533-2167 or visit
www.Epoxy.com.
WARRANTY
Information regarding Epoxy.com Resin brand MMA resins and systems is
based upon extensive research and experience in the field of applied engineering
by the manufacturer. By making such information available, Epoxy.com
does not thereby assume any liability beyond express terms of our standard
limited material warranty. Epoxy.com does not warrant the accuracy or
completeness of any such information, whether conveyed orally or in writing,
but to the best of our knowledge believe it to be accurate. We reserve the
right at any time and without notice to update or improve our products and
process and our information concerning the same. By Epoxy.com Resin making
this information available does not relieve the purchaser or user from his
obligation to verify the suitability of our products and processes for the
intended use or application. The purchaser and user likewise have the
responsibility to ensure that the purchase, use or application does not
infringe upon patent rights or other rights of third parties. "Epoxy.com" warrants for a period
of one (1) year that its products will be free of manufacturing defects and will
be in conformity with published specifications when handled, stored, mixed, and
applied in accordance with recommendations of Epoxy.com. If any product fails to meet
this warranty, the liability of Epoxy.com will be limited to replacement of any
non-conforming material if notice of such non-conformity is given to
Epoxy.com within
one (1) year of delivery of materials. Epoxy.com may in its discretion refund the
price received by Epoxy.com in lieu of replacing the material. No customer,
distributor, or representative of Epoxy.com is authorized to change or modify the
published specifications of this warranty in any way. No one is authorized to
make oral warranties on behalf of Epoxy.com. In order to obtain replacement or refund
the customer must provide written notice containing full details of the
non-conformity. Epoxy.com reserves the right to inspect the non-conforming material
prior to replacement. EXCEPT FOR THE EXPRESSED WARRANTY STATED ABOVE, THERE ARE
NO OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WITHOUT LIMITATION, ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PURPOSE. Epoxy.com'S OBLIGATION
SHALL NOT EXTEND BEYOND THE OBLIGATIONS EXPRESSLY UNDERTAKEN ABOVE AND
Epoxy.com SHALL
HAVE NO LIABILITY OR RESPONSIBILITY TO THE PURCHASER OR ANY THIRD PARTY FOR ANY
LOSS, COST, EXPENSE, DAMAGE OR LIABILITY, WHETHER DIRECT OR INDIRECT, OR FOR
INCIDENTAL OR CONSEQUENTIAL DAMAGES.
|