Araldite ® Topcoat 20 TU


PROTECTIVE COATING OF HIGHEST CHEMICAL RESISTANCE
 
USES
Provides a protective surface coating of oustanding mechanical and chemical properties. Heavy duty coatings for petro-chemical factories, textile mills, sugar mills, water purification, fertilizer plant, sewage plant, effluent pipes and steel structures in corrosive environments

SPECIAL FEATURES
* SOLVENT FREE
* HARD GLOSSY FINISH
* POSITIVE BOND TO CONCRETE AND STEEL
* OUTSTANDING CHEMICAL RESISTANCE

DESCRIPTION
Araldite Topcoat 020 TU is a two component coating based on Araldite epoxy resin. Each component is factory weighed and packaged ready for on site mixing. The resin component is white and hardener is green to give a visual check on complete mixing prior to use

PHYSICAL PROPERTIES
 Time at
 20° C30° C40° C
Pot life
Initial hardness
Recoating interval
Full cure		100min.
24 hours
15-48 his.
7 days		70 min.
12 hours
8-24 hrs.
7 days		50 min.
7 hours
5-20 hrs.
7 days

MECHANICAL PROPERTIES
 20° C40° C60° C
Hardness (persoz)
Distensibility (DIN 53156)
Impact strengths
(1 kg 0 20 mm.)
Bend test (Ø15 mm. Mandrel)		230 sec's
0.5 mm.
5 cm/kg

109		260 sec's
3 mm.
20 cm/kg

60s		--
3 mm.
40 cm/kg

80s
All test performed after curing for 7 days.

CLEANING DOWN
Use HUntsman Cleaning Fluid.

COVERAGE
Araldite Topcoat 020 TU
5.4 pack covers 18 m2 at 300 g/m2 and 10 kg. pack covers 32 m2 at 300 g/m2(single coat). Rough concrete may require more material.

STORAGE
Shelf life of 12 months minimum if stored below 25-C.

CAUTION
Keep uncured epoxy materials away from the mouth, food or drink.
Do not use empty tins to store food even if they appear to have been cleaned.
Always wear gloves or barrier cream when handling uncured epoxy materials. Clean any splashes or smears from the skin immediately using warm water and soap.
Avoid inhaling vapour.
Do not use below 59 C.

NOTICE
The information in this publication, given in good faith, is based on the present state of our knowledge but all recommendations are made without guarantee since the conditions of use are beyond our control. Buyers and users should make their own assessment of our products under their own conditions and for their own requirements.

 

CHEMICAL PROPERTIES
Araldite Topcoat 020 TU is unaffected by 12 months submersion in the following reagents at 20s C.

Water (de ionized)
Table salt solution
Gasoline (leaded)
Crude oil
Sulphuric acid 10%
Hydrochloric acid
Phosphoric acid
Acetic acid
Caustic soda
Ammonia cone
Ethyl alcohol		 .
% 20

.
% 10
10 %
43 %
50 %
30 %
.
20 %

Higher concentrations will usually be resisted for limited periods. Please consult your nearest Huntsman technical office for guidance.

INSTRUCTIONS FOR USE
PREPARATION
New concrete or cementitious substrates should be at least 28 days old when moisture content of the surface should be below 5 %.
All laitence and loose material must be removed from the concrete surface. If the concrete is sound and strong with light laitence this can be achieved
with acid etching followed by thorough washing with water. The floor must then be left to dry.
Cracked or damaged concrete or heavy laitence should be prepared by grit blasting or scabbling until a solid surface is reached showing exposed
aggregate. The surface should then be levelled using Araldite Hole Filler.
Surfaces contaminated with oil or grease should be flame cleaned or thoroughly washed with a good detergent then rinsed and left to dry.
All steel surfaces should be shot blasted until free of all traces of corrosion. Prime with Araldite Primer 011

MIXING
Mechanical mixing of resin based materials is preferred whenever possible. In order to avoid trapping air in the material, mixers running at less than 600 rpm are recommended.

APPLICATION
Araldite Topcoat 020 TU is supplied as two pre-weighed packs in exact proportions. No other materials should be added.
STIR CONTENTS OF EACH TIN THOROUGHLY. Pour the entire contents of the hardener into the resin and mix until a uniform colour is achieved. Apply to the substrate using a trowel, roller or brush being careful to leave no pinholes or breaks in the coating, with rough concrete, work the coating well into the surface using a stiff bristle brush. Apply in two coats each of approx. 300 gr./m2. This corresponds to a dry film thickness of about 240 microns per coat. Rough concrete may require more material. Ensure that the second coat is applied within the stated re-coating interval. If not then intercoat adhesion will be impaired.

CURING
The coating will be touch dry within the initial hardness time. Aggressive chemical should not be applied until after full cure. The coating darkens from green to brown following exposure to sunlight without loss of chemical or mechanic properties.