PVA Bonding Agent

Technical Data Sheet

1. DESCRIPTION

Antel P V A Bonding Agent is a water based synthetic polymer emulsion.

2. USES

The excellent adhesive power and resilience of Antel P V A Bonding Agent make it a reliable medium as a :-

Bonding Agent.
Cement Additive.
General Purpose Adhesive.

3. PACKAGING

500 gms, 1 kg, 2.5 kg ,5 kg and 25 litre non returnable plastic containers.

4. COLOUR

White becoming clear on drying.

5. STORAGE

Keep containers tightly closed when not in use and store in warm dry conditions above 4°C. Protect from freezing. Keep out of reach of children.

6. HEALTH & SAFETY

Being water based Antel P V A Bonding Agent is non flammable. It is non toxic under normal conditions of use. Harmful if taken internally. Like all synthetic polymer emulsions Antel P V A Bonding Agent contains minute amounts of volatile organic substances and efficient ventilation is therefore needed where large quantities are used. Do not smoke and avoid inhalation of fumes. If inhaled remove to fresh air immediately. Irritating to eyes and skin.
If in contact with the eyes flush with copious amounts of water and seek medical advice. Wash contaminated skin thoroughly with soap and water. Ingestion - seek medical advice immediately.

7. PHYSICAL DATA

Specific gravity (SG) Wet 1.09
Dry 1.19
Viscosity @ 25°C 50 - 75 poise
Non volatile content 53%
Plasticiser content 10 % Phthalate plasticiser

8. INSTRUCTIONS FOR USE

ANTEL P V A BONDING AGENT

To ensure a sound key for mortar or plaster renderings to walls and ceilings, it is usual to either hack or score the surface in order to provide a mechanical key, or to treat it with a special P V A emulsion adhesive. The second alternative is far quicker, less costly and avoids noise and dust. Treatment with emulsion is essential on dense impervious surfaces (low suction backgrounds) and on highly porous surfaces (high suction backgrounds). It is also commonly applied to medium suction backgrounds to ensure maximum adhesion.

INTERIOR WALLS

As with all re-rendering the wall must be clean and all loose and friable material must be removed with a wire brush. Any grease or water repellent contamination must be removed by using degreasing wash. The surface is then treated with Antel P V A Bonding Agent. The amount to use varies with the background and particularly the porosity of the surface. As a general guide only enough emulsion should be used to wet the surface thoroughly. Low suction backgrounds e.g. glazed tiles and bricks or surfaces painted with impervious coatings - treat with undiluted Antel P V A Bonding Agent.  Medium suction backgrounds e.g. weak concrete mixes and lightweight building blocks - seal with one part Antel P V A Bonding Agent diluted with five parts water, allow two hours drying and treat again as for medium suction backgrounds. In all case rendering may take place whilst the key coat is wet or after it has dried.

EXTERIOR WALLS

The wall must first be thoroughly cleaned as described for interior walls.  A 3:1 mixture of sharp building sand and ordinary Portland Cement is gauged with one part Antel P V A Bonding Agent diluted with three parts water, to give a consistency allowing a sharp stipple to be produced on the wall. After the stipple coat has cured for at least four days, mortar rendering may be applied in the normal way.

CEMENT ADDITIVE

Unlike many polymer emulsions Antel P V A Bonding Agent is not destabilised by cement or plaster. It is easy to use for increasing the resilience, adhesion and wear resistance of mixes, particularly interior floor toppings, provided that these are not subject to rising damp or other ingress of water. The sub floor must be free from all loose material, grease or similar contamination. The floor is then treated with a stipple coat as described for exterior walls. After four days curing, the topping can be laid. Optimum properties in the topping occur at roughly 20% Antel P V A Bonding Agent on cement weight. For a 3:1 mixture of sharp sand and cement, this is achieved by gauging to normal working consistency using one part Antel P V A Bonding Agent diluted with three parts water. The wet mix can be laid in the normal way but excessive towelling with metal floats is inadvisable.

GENERAL PURPOSE ADHESIVE

During building operations there is often a need for a general purpose adhesive where specialised materials are not warranted. Antel P V A Bonding Agent is particularly useful in these situations. Typical uses include fixing small runs of ceramic tiles (provided that moisture cannot gain access to the bond) and gluing battens or wooden structures not required to support heavy loads.

NOTE

Because of the plasticiser content, Antel P V A Bonding Agent must not be used for repairing furniture or in other situations where heavy load bearing is important. It is also not recommended for the fixing of expanded polystyrene tiles since the plasticiser may soften the polystyrene and lead to bond failure. Antel P V A Bonding Agent cannot be used to glue impervious materials together, since it cannot dry, and will fail to develop a bond.