8/11/2019 Adesilex G20

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WHERE TO USE

Interior and exterior bonding of flooring in rubber,PVC, textiles, needlepunch, linoleum, polystyrene andpolyurethane panels, fibrous cement, wood, sheetmetal, plastic laminates.

Bonding of synthetic reinforcing mesh for the backingsof ceramic tiles for ventilated building faades.

Some application examples

Adesilex G20is a highly flexible and strong adhesivefor general purpose use, and is particularly suitable fornon-absorbent substrates or substrates sensitive tohumidity.

Adesilex G20is used for bonding: external fabric and needle-punched floors;

floors in homogenous, mixed, semi-flexible PVC;

exterior textile and needlepunch flooring

ON

cement screeds, hot poured asphalt and non-absorbent or water sensitive flexible supports (sheetmetal, plastic laminates, fibrous cement, rubber, PVC,wood, old ceramics);

sandwich panels for prefabricated walls with elementsof plasterboard, wood or its derivatives, aluminium,expanded polystyrene and polyurethane, fibrouscement, sheet metal, PVC etc.

As a levelling screed on concrete and asphalt priorto laying rubber and PVC flooring bonded with

Adesilex G19.

TECHNICAL CHARACTERISTICSAdesilex G20is a low viscosity two componentadhesive consisting of a polyurethane polymer, part A,and a special hardener, part B.

By accurately mixing the two components together auniformly coloured paste is obtained, that can easilybe applied with a trowel, roller or spreader.

Adesilex G20can only be applied on horizontalsurfaces.

Due to its low viscosity it can be applied with rollers inindustrial continuous production lines.

After hardening (around 24 hours), solely by chemicalreaction and without shrinkage,Adesilex G20becomeselastic, resistant to water, humidity, heat, atmosphericagents, with high caracteristics of adhesion on nearlyall commonly used construction materials.

RECOMMENDATIONS Do not install on substrates subject to rising damp

(always lay a vapour-proof barrier between the groundand screed).

Do not install on wet surfaces.

Do not install on freshly laid asphalt (wait at least20 days).

Low viscosity

two-componentepoxy-polyurethane

adhesive for rubber,

PVC and linoleum

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Mixing must be carried out with a mechanicalstirrer until a homogeneous paste is obtained.Setting time and pot life are closely linked tothe ambient temperature (see relative table).

Never use at temperatures below +10Cas the resulting setting time will be tooprolonged.

Attention: the ratio between the resin(part A) and the catalyst (part B) isunvariable. Any modification of the dosagewill compromise the proper reticulation ofthe adhesive.

Spreading the adhesive

The choice of the system of application(trowel, roller or spreader) depends on thetype of flooring and substrate.

In every case the adhesive must be appliedevenly and on as much of the surface thatcan be covered with flooring in approximately60 minutes (with attention to the ambient andsubstrate temperature).

Installing the floor covering

Follow the installation instructions givenby the floor covering manufacturer.The flooring, both sheets or tiles, must beapplied to theAdesilex G20while it is stillfresh, within 1 hour at +23C, and thenaccurately smoothed from the centre towardsthe edges, in such a way to make completecontact, and at the same time allow any airbubbles to escape from the edges.When the flooring is uneven, the deformedsections, joints and ends must be weighted

down (with sandbags or other) until theAdesilex G20has cured (12 to 24 hours).

Special care must be taken for exteriorinstallations at high temperatures or widetemperature differentials (install at the coolesttime of day).

Flooring bonded withAdesilex G20isready for foot traffic after approximately12-24 hours. In an ambient temperatureof +23C final setting takes place afterapproximately 3 days.

Setting time of Adesilex G20 in relationto temperature:

Temperature in C 30 25 20 15 10 5

Time in hours 4 6 10 12 20 36

CONSUMPTION

Consumption is approximately 0.35-0.5 kg/m2.

Cleaning

Adesilex G20can be removed from flooring,tools and clothing with alcohol beforehardening occurs. After hardening it can only

be removed mechanically or with Pulicol 2000.

Colour

Adesilex G20is available in beige.Special colours can be supplied on request(min. 600 kg).

Do not use on bituminous surfaces whichmight bleed oils.

Do not useAdesilex G20at temperaturesbelow +10C or above +35C.

Do not useAdesilex G20on curvedsurfaces or steps if it is not capable offorming a perfect bond between the

finishing material and substrate until it hasset (use a two way stick, polychloroprenicadhesive, such asAdesilex VZ,

Adesilex LPor Ultrabond Aqua-Contact).

APPLICATION PROCEDURE

Preparation of the substrate

The substrate must be uniformly dry, flat,free of cracks, resistant to compression andtension; free of dust and loose particles,varnish, wax, oil, rust, traces of gypsum andother products that may prevent bonding.

The moisture content must be as prescribed:for cement substrates max. 2.5-3%; for thosewith a gypsum or anhydrite base max. 0.5%.

It is essential to ensure that there is no risingdamp present.

Floating screeds installed on lightenedsub-layers or insulating material and screedslaid directly on the ground must be isolatedby laying an efficient, long-lasting vapourbarrier.

If necessary: to repair cracks in substrates,consolidate screeds, use quick-dryingscreeds and level off the laying bed, please

refer to the catalogues which illustrate thevarious ranges of MAPEI products for thepreparation of substrates or contact theMAPEI Technical Assistance Department.

External surfaces may only be levelled withPlanicretemixed with sand with a suitablegrain size and cement or withAdesilex P4.

For asphalt surfaces, useAdesilex G20,adding up to 25-30% of clean, dry sand ifrequired.

LayAdesilex G20as soon as the smoothing

layer is ready to be stepped on.

Acclimatization

Before starting the installation, makesure that the floor covering, the adhesiveand the substrate are acclimatized at therecommended temperature.Floor coverings must be removed fromthe packaging several hours beforeinstallation; the lengths must be freely laidor at least loosened from the rolls to allowacclimatization and the reduction of tensionsproduced by the packaging.

MixingThe two components ofAdesilex G20are supplied in drums with the correctproportions:component A: 9.4 parts by weight;component B: 0.6 parts by weight.

Bonding of reinforcingmesh on the backingof ceramic tiles

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TECHNICAL DATA (typical values)

PRODUCT IDENTITY

component A component B

Consistency: thick paste low viscosity liquid

Colour: beige transparent

Density (g/cm): 1.45 0.95

Dry solids content (%): 97 100

Brookfield viscosity (mPas): 70,000 70(rotor 6 - 5 rpm) (rotor 1 - 20 rpm)

Storage: Adesilex G20is stable in storage for at least 24 monthsif the buckets are kept sealed.Component B catalyst, must be kept in a warmenvironment in order to avoid crystallization due to thecold. In the case of crystallization it will be necessary to

warm up in a water bath before using

Hazard classification according to EC 1999/45: irritant corrosiveBefore using refer to the Safety instructions forpreparation and application paragraph and theinformation on the packaging and Safety Data Sheet

APPLICATION DATA (at +23C - 50% R.H.)

Ratio of the mix: component A : component B = 94 : 6

Brookfield viscosity (mPas): 30,000(rotor 7 - rpm 10)

Density of the mix (g/cm): 1.43

Pot life of the mix: 40-50 min.

Application temperature range: +10C to +30C

Workability time: 1 hour

Adjustment time: 90 minutes

Initial setting time: 9 hours

Final setting time: 10 hours

Ready for traffic: after 12-24 hours

Final curing time: after 3 days

FINAL PERFORMANCE

Resistance to moisture: excellent

Resistance to ageing: excellent

Resistance to solvents and oils: good

Resistance to acids and to alkalis: good

Resistance to temperature: from -40C to +100C

Flexibility: yes

Test of adhesion PEEL 90 in compliance withEN 1372 (N/mm): after 7 days at +23C:

dimpled rubber > 4 homogeneous PVC: > 4

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PACKAGINGAdesilex G20is supplied in units of 10 and5 kg.

STORAGEAdesilex G20under normal conditions andin its original unopened packaging, is stablefor at least 24 months.

SAFETY INSTRUCTIONS FOR

PREPARATION AND APPLICATIONAdesilex G20component A is an irritantfor the eyes and skin. Component B iscorrosive and may cause severe burns. It isalso harmful if it comes into contact with theskin or if swallowed. Both component A andcomponent B may provoke rashes in thosesubjects who are allergic to such substances.Use protective clothing, gloves and goggles.If they come into contact with the eyes, washwell with plenty of clean water and seekmedical attention.

Adesilex G20is hazardous for aquatic life:do not dispose of the product in theenvironment.

For further and complete information aboutthe safe use of our product please referto our latest version of the Material SafetyData Sheet.

PRODUCT FOR PROFESSIONAL USE.

WARNINGAlthough the technical details andrecommendations contained in this productdata sheet correspond to the best of ourknowledge and experience, all the aboveinformation must, in every case, be taken asmerely indicative and subject to confirmationafter long-term practical application: forthis reason, anyone who intends to use theproduct must ensure beforehand that it issuitable for the envisaged application: inevery case, the user alone is fully responsiblefor any consequences deriving from the useof the product.

Please refer to the current version of theTechnical Data Sheet, available from ourweb site www.mapei.com

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BUILDING THE FUTURE

All relevant references

for the product are availableupon request and from

www.mapei.com