ARMOUR-CHEM Polyurea Elastomer
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Product Description
THE SPRAY APPLIED, ELASTOMERIC COATING THAT
CAN BE PUT INTO SERVICE IN MINUTES.
The technology of Polyurea sprayed elastomers is based
on amine - terminated polyether resins, amine chain
extenders and isocyanates. It provides a flexible monolithic
extremely tough elastomer with good physical properties,
high degrees of thermal and hydrolytic stabilities and
excellent water and chemical resistance.
Features
- ARMOUR - CHEM spray is a seamless membrane
that can be handled and walked on one minute or less
from the time it is sprayed
- ARMOUR - CHEM spray is hydrophobic and therefore
unaffected by damp substrates when creating non -
bonded liners. It can be sprayed at temperatures as
low as -30° C with minimal effect on tack free time
- Due to the almost instantaneous gel of ARMOUR -
CHEM spray, it can be built up to any thickness in
one application including vertical and overhead applications.
This eliminates the need for multicoat applications
- ARMOUR - CHEM spray is 100% solids, no solvents,
no V.O.C.s
- The cured elastomer has a high thermal stability
with constant working temperatures up to 130° C and
intermittent temperatures up to 160° C
- ARMOUR - CHEM spray can be applied with a
standard 1 : 1 ratio plural component high pressure
machine ( capable of developing 2000 psi ). Consult
Isothane technical staff for a specific recommendation.
The Polyurea exhibits a high service temperature due
to its amorphous structure. The coating will stand
an in service temperature range of -50° to +130° C
Some Recommended Uses
- Fish boat holds
- Earth containment lining
- Tank linings for primary and secondary containment
- Roof coatings for metal decks
- Steel tanks, silos and pipes
- Hail, bird and traffic protection over polyurethane
foam
- Encapsulant for styrofoam and other types of floatation
- Liner for concrete tanks, ponds, lagoons, reservoirs,
dykes, irrigation ditches, tunnels, barges, etc.
Material Specification
Liquid Components
| Solids |
- by weight |
100% |
|
- by volume |
100% |
| V.O.C (volatileorganic carbon) |
0 |
| Mix ratio |
|
1:1 by volume |
| |
| Flash point |
> 200° C |
| |
| Resin: |
Viscosity @ 25° C |
525cps |
| |
SG @ 25° C |
1.0 ± 0.02g/cm³ |
| |
| Iso: |
Viscosity @ 25° C |
750cps |
| |
SG @ 25° C |
1.12 ± 0.02g/cm³ |
| |
| Cure times |
- Gel |
5 secs |
| |
- Tack free |
10 secs |
| Recoat |
|
0 - 12 hours |
| |
Cured Elastomer
| Tensile strength |
13 MPa |
| Elongation |
300% |
| 100% modulus |
8 MPa |
| Hardness |
45 - 50° shore D |
| Abrasion resistance Taber, H18, 1kg wt, 1000 rev |
160mg loss |
| Coefficient of linear thermal expansion ° C |
1.63 x 10 -4 |
Due to the large diversity of uses for the Polyurea,
the material can be supplied in various colours. Specials
are available subject to minimum order quantities. It
should be noted that Polyurea spray is based on aromatic
amines, therefore with certain shades over a period
of time, changes in colour and superficial oxidation
can occur.
Chemical Resistance Testing ASTM D-1308 Method
3.1.3. Immersion Test
| CHEMICAL |
EFFECT |
% SWELL AREA |
| UNLEADED PETROL |
A / B |
5 |
| 5% CH3OH in PETROL |
C |
50 |
| XYLENE |
C |
30 |
| METHANOL |
B |
5 |
| ACETONE |
B |
10 |
| NaOH 0.5N |
A |
- |
| NaOH 1N |
A |
- |
| BROMINATED WATER |
A |
- |
| ACETIC ACID |
A |
- |
| H2SO4 5% |
A |
Pigment Discolouration |
| H2SO4 10% |
A |
Pigment Discolouration |
| H2SO4 50% |
B |
5% Swell & Discolouration |
| |
A = No visible damage
B = Little visible damage, slight swelling, discolouration
C = Some effect, swelling, discolouration, cracking
Armour - Chem Hydrolysis @ 80° C
|