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Applications: Assembly and repair (1); Home decoration (1); Wall adhesives (1)
Brands: Quelyd
Destinations: Walls (1)
Specific characteristics: ~~Environmentally friendly~~ (2); ~~Ready-to-use~~ (2)
Substrates: Paper/cardboard (1); PVC
Segments: Construction (1); Consumer (1)

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EPONAL 321

Two-component solvent-free clear epoxy resin: primer & coat for thick-bed systems

Additional Downloads
MSDS - Hardener
MSDS - Resin
Application scheme Eponal 321+326 (660 Kb)
Application scheme Eponal 326 (516 Kb)
Application scheme Novaflex 330 (265 Kb)
Definitions
PrimerLiquid or paste applied onto a substrate to obtain optimum bonding. It helps regulate the porosity of the substrate (reduce absorption, therefore adhesive usage), increase adhesion to non porous surfaces, improves application properties of later on applied adhesive
TackAdhesive power to maintain together 2 materials. Tacky surface means sticky surface.
Tiling
Working timeTime between end of waiting time and moment when the application is no longer possible

Uses

EPONAL 321 is a two-component solvent-free clear epoxy resin used as :

a primer or a main coat in multi-layer thick-bed flooring system (3 to 5mm thick) for high traffic applications (production areas, warehouses, high traffic areas, laboratories, etc.)
a repair mortar: float-applied repair mortar for damaged concrete substrate or liquid mortar for crack bridging
a tile grout in industrial applications

Benefits

Product being a part of the system under NF EN 13813 standard
Solvent-free
No shrinkage
Excellent adhesion to most substrates including concrete, ceramic tiles, metal, brick, stone and timber
Excellent mechanical and chemical resistance
Easy application
For repair mortars can be mixed with sharp sand (up to 1:12 by weight)
European fire classiciation: Bfl-s1

Properties

Physical:

Physico-physical properties

Bostik Method	Characteristics	Resin (Part A)	Hardener (Part B)	Mix
00.010	Aspect	Liquid	Liquid	Liquid
00.020	Colour	Pale yellow	Yellow	Yellow
01.052	Specific gravity at 23°C	1,08 - 1,14	1,00 - 1,04	1,06 - 1,12
01.070	Brookfield viscosity at 23°C	900 – 1600 mPa.s	300 - 700 mPa.s	500-1000 mPas
	Mixing ratio: by weight by volume	100 2	50 1
06.060	Working time at 20°C 5 kg			15 min
06.060	Pot Life at 20°C (100 cc)			45min

Chemical resistance at 20°C

Ethyl Acetate	NR	Demineralised water	R
Acetone	NR	Distilled water	R
Acetic acid 10%	RI	Bleach (48°CHL)	R
Hydrochloric acid 10%	R	Hydrogen peroxide (up to 70 vol)	R
Hydrochloric acid 30%	R	Ethanol 76%	R
Citric acid 10%	R	Domestic fuel	R
Lactic acid 10%	R	Brake liquid	RI
Nitric acid 10%	R	Methanol	NR
Nitric acid 30%	NR	Potash 50%	R
Phosphoric acid 10%	R	Soda 50%	R
Phosphoric acid 30%	RI	Petrol, unleaded, Super 98	R
Sulphuric acid 10%	R	Toluene	NR
Sulphuric acid 30%	R	Wines, beers, fruit juices	R
Ammonia 20%	R

R : Resistant
RI: Resistant to intermittent exposure/occasional spillages if immediately cleaned
NR: Non resistant

Note : Depending on the initial colour and the nature of the chemical agent, a discolouration or change in colour can sometimes be observed; this change does not affect in any way the protection properties of the flooring.

Safety:

PREVENT skin and eye contact. Do not breathe vapours. Use protective gloves when mixing or using. Wear protective clothes and safety glasses.

Shelf life:

Up to 24 months in the original, unopened containers, stored in a dry place at +10°C and +25°C

Application

Application conditions

Working temperature: + 10° to + 25°C

Maximum relative humidity: 80%

During application and cure, substrate temperature must always be at least 3°C above the dew point temperature.

PREPARATION

Preparation should be in accordance with building standards. Concrete subfloors must be clean, sound, dry (relative humidity <4%), of adequate compressive and tensile strength (at least 25 MPa and 1,5 MPa respectively after 28 days cure for new concrete) and not subject to hydrostatic pressure. They must be free from laitance, cracks and structural defects; clean and free from dust, grease, curing compounds, sealers or any other contaminants that would inhibit proper bond. Depending on subfloor condition and type, subfloors are treated by grit blasting, mechanical planing, scabbing, sandblasting, high pressure water washing or chemical stripping. After mechanical treatment of a subfloor, thoroughly vacuum all dust.

PRODUCT MIXING

- EPONAL 321 Primer

- EPONAL 321 Mortar mixed with F208/1 sand

Add the hardener into resin (parts A + B) while mixing, mix thoroughly for 2 to 3 minutes with an electric drill and mixing paddle (speed: not more than 300 rpm in order to avoid air bubbles inclusion). Then add F208/1 sharp sand (particle size 0.1-0.9mm), mixing ratio: EPONAL 321 blend =1kg : F208/1 sand=1 kg.

SYSTEMS

- Primer

Apply a coat of EPONAL 321 on a dry subfloor using a roller or or a notched trowel n°3 B2 at a rate of 300-400gsm.

EPONAL 326 Multi-layer system

- First main coat

On a dry substrate (1) apply a coat of EPONAL 321 mortar using a float or a squeegee at a rate of 2kg/m², then broadcast sand (particle size 0.4-0.9mm) abundantly at a rate of 2.5-3kg/m² onto still wet mortar.

- Second main coat

After the first main coat has cured, thorougly remove excess of sand, apply the second coat of EPONAL 321 mortar using a float or a squeegee at a rate of 2kg/m², then broadcast sand (particle size 0.4-0.9mm) or coloured quartz sand (particle size 0.3-0.8mm) abundantly at a rate of 2.5-3kg/m² onto still wet mortar.

- Finishing coat

After the second coat has cured, thorougly remove excess of sand, apply a clear or coloured coat of EPONAL 326 using a float or a squeegee at a rate of 300-600 g/m².

(1) on damp substrate not subject to water seepage apply one coat of EPONAL 376 mortar (mixing ratio: 1 kg of EPONAL 376 blend : 1 kg of F208/1 sand).

Temperatures	+10°C	+20°C	+25°C
Cure time between 1st and 2nd main coats	48 hours	24 hours	12 hours
Cure time between 2nd main coat and finishing coat	48 hours	24 hours	12 hours
Set to foot traffic after:	4 days	48 hours	24 hours

Float-applied EPONAL 321 mortar
Apply EPONAL 321 primer with a roller or a brush at a rate of 300-400g/m². Then apply onto a tacky primer (i.e. after 1 hour at 20°C) EPONAL 321 blend (A+B) mixed with sharp sand (mixing ratio: 1 part of EPONAL 321 blend to 5 to 12 parts of sharp sand (particle size: 0.1 to 0.5mm) depending on the required use).

Tile Grout

Mix 1 part of EPONAL 321 blend (A+B) with 7 parts of sharp sand (0.2 to 0.5mm ). Apply the mixture with a trowel. Immediately wipe off the tiles after applying epoxy grout mortar.

Packaging

Presentation	Bar code	Bostik code
Resin - container - 1000 kg		176141
Hardener - container - 1000 kg		176151
Resin - metal drum - 200 kg	3549210009856	176140
Hardener - metal drum - 200 kg	3549210009863	176150
metal kit - 25 kg	3549210009870	176160
metal kit - 5 kg	3549210009887	176161