How to dilute epoxy glue: proportions

Very often both in everyday life and production requires means for gluing materials. Epoxy glue refers to the most used types of adhesives and has a lot of advantages. But as any means, epoxy glue has its own characteristics that affect the end result.

Peculiarities

Before proceeding to gluing surfaces, it is necessary to deal with the composition of this glue, the principles of its action and the scope of application.

What is the epoxy glue? The answer to this question lies in the title of glue. Its base is epoxy resin, which is a type of synthetic resins and possessing universal consumer properties.

For curing resin, a certain temperature is required. For epoxy resin, it is in the range from -10 to +200 degrees. Temperature selection depends on the type of composition. Depending on which temperature, the reaction will occur, epoxy resins will be divided into cold and hot curing types. Cold species is used for non-heat treatment materials, and hot types are needed for materials withstanding not only high temperature, but also the impact of active chemicals.

Cold curing type is most often used to glue materials at home, and also applied in small industries. For large industrial enterprises, the most acceptable is a hot curing type. Aircraft, Mechanical Engineering, Electrical Equipment, Radioelectronics, Shipbuilding and other industrial spheres use epoxy resins in the composition of adhesive.

In addition to epoxy resin, the glue includes a hardener, without it, the polymerization process is impossible. It is a hardener, enhancing a reaction with epoxy resin, helps her to frozen and not melted.

In the sale of resin and hardener are in different vials, for gluing data components will have to breed in the required proportion. Both components relate to polymers having a small molecular weight, when interacting, simple molecules are combined, resulting in a large polymer molecule (with full frozen).

To accelerate the polymerization process, you can increase the temperature and increase the amount of hardener, and to slow down the reaction to do exactly the opposite, lowered the temperature and reduce the amount of hardener.

The universal composition of epoxy glue is characterized by a high degree of adhesion, They can be glued to almost any materials: metal, rubber, glass, plastic, wood, main thing – in the desired proportion to connect the resin and hardener. After a complete rejection, the surface treated with this composition may be subject to any processing: grinding, sawing, drilling and other types of work can be carried out without material deformation.

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How to breed?

Glue breeding requires maximum caution, so it is better to prepare all the necessary tools and protection tools in advance.

Rubber gloves and mask will be needed to protect skin and respiratory tract, because both components are extremely toxic substances. Capacities for breeding components and sticks for mixing them are required. In addition, the room in which work will happen should be well ventilated.

Depending on the composition, epoxy can form different compounds on the rigidity. For a soft elastic clutch, one type of composition is produced, and for solid completely different. Therefore, to acquire components and cook the adhesive composition is necessary, strictly observing the proportionality specified by the manufacturer.

Usually, instructions are attached to the bottles with a resin and hardener, in which it is always indicated how to mix the components correctly, while observing the proportionality of breeding. As a rule, for the preparation of adhesive composition, the components are required 10: 1 – on 10 parts of the resin there are 1 part of the hardener.

But today are produced by different compositions that are not always required to dilute this way, sometimes in order to prepare the adhesive composition, it is necessary to mix the resin and hardener in another proportion.

The proportionality of breeding depends on the specific manufacturer. In one case, the ratio can be 10: 4, in another – 10: 6, and in the third to achieve the desired consistency you need to dilute 4 parts of the hardener in 6 parts of the resin. The proportionality of dilution depends not only on the specific manufacturer, but also on the date of the resin and hardener, the conditions of storage, ambient temperature, and, of course, from the quality of both products.

Previously, in order not to make a mistake with the number of components added, manufacturers produced vials with marks, but today there are no division on vials, so the mixing of ingredients can be performed using different infrident agents.

For a small amount, you can use the old rod from the handle. Before use, it is thoroughly washed and applied to the surface of the mark at equal intervals.

You can measure the amount of component with the help of a more convenient tool – the syringe. It already has marks, you don’t need to draw them yourself, and they are much more accurate than self-made on the rod. To fill the hardener in the syringe, you just need to remove the needle and download it through the piston, and you will have to put it in it somewhat different way, because it will not turn it through the nose – it has a consistency too viscous. In the syringe, you must remove the needle, remove the piston and shut the spout, and only after that pour the resin through the top.

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In order to properly disperse epoxy, you need to prepare each component to be prepared for breeding. A measured variety of viscous resin is added to the container and mixed thoroughly. Sometimes epoxy resin is very hard, so it can be heated in a water bath to facilitate this process, 50-60 degrees are enough. But it is worth remembering that the increase in temperature not only makes it easier to stirring, but also speeds up the polymerization process – just just increase the temperature of the mixture to 10?C, and the reaction will accelerate 2-3 times.

After preparation, the components must be connected and stir in a clean capacity, but it is not very vigorous to do it, otherwise it is not to avoid the appearance of bubbles. Their presence in the glue can spoil the appearance of poured objects if the composition is used as fill.

For simple gluing surfaces, the number of bubbles does not matter. If dyes are added to the composition, it is better to use them in a dry form, since moisture even in the minimum number adversely affects the adhesive composition.

The prepared composition is distinguished by liquid consistency during the first minutes, but after 10-15 minutes it begins to quickly thick, and after 30 minutes it hardens. To extend the time of working with the composition, you can use this means as acetone – it will increase the validity of the adhesive to 1 hour. To do this, it is necessary to dissolve only 1 part of this substance in the composition with a proportion of 10: 1: 1.

How to use?

Make a little correctly prepare, you need to take advantage more. The glue can be used both as a connector of surfaces and as fill in the prepared forms.

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For durable bonding materials, there are general rules for the preparation:

  • Mechanical cleansing of the surface of materials from pollution;
  • Degreasing the prepared places of gluing from oil trails, it will suit the solvent, acetone or detergent;
  • Surfaces having gloss are processed using sandpaper or grinding circle.

For simple gluing, the composition is applied to one of the parties, after which both surfaces are tightly pressed to each other. As fixtors, you can use a durable rope, visets, clamps or cargo. Appeated glue residues are removed with dry cloth or napkin. In a fixed position, glued materials should be at least 24 hours, while the primary polymerization process goes, after which the auxiliary fasteners are removed, and the gluing product is left for complete drying for 7 days.

When using special forms of fillings, they are prepared otherwise. Bottom and sidewalls are treated with fats. After lubrication, the finished composition is poured into the form and withstands it to a complete curing. To increase the rates of polymerization after a 3-hour shape exposure at room temperature, it is sent to heating to the hot wardrobe. If the form is not subjected to heat, then the process of complete curing can take up to 7 days.

Tips

In the preparation of the composition, as well as when it is applied to the surface or fill with these glue forms, there are universal tips to help achieve better gluing.

When preparing the composition, it is better to use dishes and auxiliary instruments, unnecessary for future use. Excess them from such a composition is almost impossible, so all the tanks used and the tools for mixing will go to the emission.

Filling in shape must be carried out in stages, especially if it is planned to make a layer thickness more than 2 mm. After the polymerization of the first coating, the following portion is filled only after curing the layer, but with a sticky surface.

For large volumes it is better to buy special compositions, Not exposed to overheating. When mixing a large number of ordinary glue, there is a risk of fire fire. Therefore, for your own security, it is necessary to calculate the desired volume of the mixture in advance and buy glue, calculated specifically for this volume.

How to make a proper epoxy glue, look in the following video.

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