How to make a PVA glue at home or compete with the chemical industry

polyvinyl acetate - is familiar in every household

glue PVA (polyvinyl acetate) - is the product obtained by polymerization of vinyl acetate, with the participation of the initiator and the protective colloid in an aqueous medium.In appearance it is a white viscous liquid, without lumps and foreign substances.It produced on an industrial scale and industrial equipment.

In the adhesive industry to prepare mortar mixer: initially loaded into the tank filler dispersion and polyvinyl acetate, then the resulting mixture was thoroughly stirred for half an hour.

To check the consistency of using a wooden pestle: properly prepared adhesive passes pestle no more than 25 mm.If the adhesive density higher than normal, the resulting solution was diluted with water and again thoroughly mixed.

There are following its forms:

• stationery - nevodostoyky, nemorozoustoychivy;
• PVA glue for wallpaper (home), can withstand up to 6 thawing / freezing cycles at temperatures up to -40 ° C;
• Brand MB (Universal), frost is 6 cycles at temperatures up to -20 ° C;
• mark M (super), frost - 6 cycles at -40 ° C;
• PVA dispersion.

To glue benefits include:

• chemical resistance;
• fast setting;
• faint odor;
• excellent physical properties at different temperatures;
• mechanical stability;
• toxicity;
• fire - and explosion.

The disadvantages of this material for a long time attributed the low water resistance, but at the moment, thanks to the use of various additives, achieved increased water resistance of some species of this material.

PVA glue - Latitude application

In the current production, as well as household items, everyone has heard at least once what the PVA glue, use it very widely.This material is often required in the field of construction and repair work.It is used for gluing of wallpaper, is added to the mortar when tiling, PVA adhesive primer allows preparing the surface for finishing, as it is indispensable for gluing chipboard and wood details.

in printing it is used for stitching exercise book blocks and books.In the production of the packaging material he needed for gluing cardboard, composite materials, laminated paper bags, cardboard drums, and more.

In the pulp and paper industry in order to improve the stiffness, durability and color of paper to various contaminants on the surface of PVA glue is applied to the emulsion.Widespread acquired the glue in the wood and furniture industry.Due to its properties, it does not affect the color of the wood, which is important for the preservation of its performance and aesthetic appearance.

polyvinyl In the textile industry is widely used for coating the underside surface of the carpet product to impart elasticity, stiffness and density.In addition, it serves to secure the carpet fibers.This material is used and when gluing the cloth.

Polyvinyl also finds its application in the footwear, leather, glass industry, in the production of household chemicals, water-emulsion paints, etc.

Features of preparation and use of PVA glue

Before using this adhesive dust and dirt must be removed from the working surface.Porous substrate is better primed surface with an old paint must be thoroughly sanded and degreased.Before using the PVA is well stirred and apply a thin layer to the bonding parts, after which they are pressed tightly.

shelf life of this material is 6 months from date of manufacture.Open adhesive should be stored in an airtight container, at t +10 ° C.It is not stored for more than 1 month at temperatures below zero polyvinyl acetate.

to manufacture at home analogue PVA needed such ingredients:

• distilled water - 1 liter;
• photographic gelatin - 5 g;
• glycerin - 4 g;
• wheat flour - 100 g;
• ethanol - 20 ml.

All of these components you can buy close to home, at the grocery store and pharmacy.The problem may be gelatin, because it requires a photographic.In preparation you need quite a bit of time and effort, especially if you prepare the gelatin.Gelatin during the day should be soaked in water.

When the time to soak gelatin past include a water bath or are building it improvised.All the ingredients, except alcohol and glycerine, spread into the container and cook in a water bath until the desired consistency (thick cream) with constant stirring.

Now that everything has got the desired look, it's time for the remaining alcohol.After obtaining a stable composition without lumps in it is added glycerin and alcohol.Thoroughly mix them in the dough, it can happen at once.So, mix thoroughly, spare no time at all it will be impossible to distinguish between irregularities, you can check out.The adhesive is ready for use should be allowed to cool down.