Bf 2 instructions for use. What types of glue are there? Epoxy glue and BF glue: full description. Analogues of BF brand adhesives

Adhesive composition, or glue, is an integral part of adhesive film, used both for packaging and for other purposes. By by and large, almost any adhesive composition Suitable for creating packaging tape. However, both the base of the adhesive tape and its adhesive composition are produced at enterprises in Kharkov, Kyiv and other cities of Ukraine from a number of materials of both natural and artificial origin. In order not to get confused in all this diversity, the editors of the Express Packaging online store have prepared for our readers a guide to all brands of glue, which can be bought wholesale or retail in pure form and as an adhesive layer of adhesive tape.

Epoxy adhesive

Epoxy resin adhesive, or simply epoxy glue, is a natural adhesive mass used for gluing metal, glass, ceramics, and wood. Most often used for filling holes or cracks, and also as a varnish coating.

Epoxy adhesive is a good electrical insulator and perfectly protects the treated surface from water or oils. It is a substance harmful to the human body. Therefore, it is recommended to use epoxy glue with special gloves, and if it gets on the skin or mucous membrane, wash it off with warm water, preferably with laundry soap. These features of epoxy glue make it impossible to use it in Food Industry. Moreover, it is not even advisable to use epoxy glue in close proximity to food or drinking water.

Using epoxy glue is a rather difficult and time-consuming process. The adhesive solution is prepared immediately before use. Epoxy resin mixed with the hardener in a ratio of usually 10 to 1. However, cases of other ratios are not uncommon.

The surfaces to be glued are cleaned of debris and dust in advance, and then epoxy glue is applied in a thin, even layer. Next, the surfaces should be compressed, and the excess formed after pressing should be removed. Excess epoxy adhesive can also be removed 4-5 hours after treatment.

Complete hardening of the epoxy adhesive solution at room temperature occurs 20 - 24 hours after surface treatment. If processed epoxy glue the surface is in a damp or cold room, the time for complete drying of epoxy glue is greatly increased. The strength of the connection can be increased by heating the treated surfaces to a temperature in the region of 90-100 º C.

Glue BF

BF glue (phenolic butyral) is a thermosetting one-component adhesive, often used as a regular quick-drying glue. The most common types of BF glue are BF-2 and BF-4, as well as BF-6. But BF-6 glue should be considered separately.

Using glue BF-2 and BF-4, wood, glassware, ceramic objects, natural and artificial leather, different kinds plastics and metals.

The main difference between BF adhesives grade “2” and grade “4” is the final characteristics of the adhesive seam. Thus, BF-2 glue is used when the adhesive joint must have good moisture and heat-resistant properties, and BF-4 glue is used when the adhesive joint must have good elasticity and frost resistance.

Using BF brand glue is quite a labor-intensive undertaking. To achieve maximum gluing effect - high strength of the adhesive seam - the surfaces to be treated should be properly prepared. So, the surfaces should first be cleaned of dirt and dust, then degreased with a solvent. Suitable, for example, is acetone or, in as a last resort– women's nail polish remover. Well, after all the above actions, BF glue is applied to the surfaces to be joined using a brush thin layer and dried on outdoors at least 60 minutes. To speed up the gluing process, you can dry the BF glue at a temperature of 85-90 º C for 15-20 minutes. After cooling the treated surfaces to room temperature The second layer of glue is applied in the same way. Next, the surfaces are tightened and dried for 2 hours at a temperature of 120 - 160 º C.

Glue BF-6

BF-6 glue is used for gluing flexible materials, in particular for gluing fabrics made from natural and artificial material. The use of this particular type of BF glue is due to the resulting final strength of the seam being stronger than when stitching. BF-6 glue is also used to seal cuts, mechanical tears and holes.

The process of directly using BF glue of this brand is the same labor-intensive undertaking as in the case of BF-2 and BF-4.

To prevent the connection from being noticeable to the naked eye, the fringe or ruffle is trimmed and adjusted to the edges of the fabric. Then cut out an overlay 1.5 - 2 cm wide from a similar or thinner fabric. The fabric is cleaned of dust and dirt. So that the glue does not appear on the front side the fabrics, pad and joint are moistened generously with water and wrung out. Using a brush, apply a thin layer of glue from the underside of the fabric and onto the glued side of the lining. Allow the glue to air dry until tack-free, then apply a second layer and also dry it until tack-free. Apply the pad from the inside out, cover it with a clean damp cloth and press it with a hot iron. Every 10 - 12 seconds, the iron is torn off for 2 - 3 seconds, then pressed again. This operation is repeated until the moistened area of ​​the fabric is dry. Then, without moving the material, allow it to cool to room temperature. The iron should be heated to the temperature recommended for this type of fabric.

At one time, many chemists and technologists around the world struggled with the task of developing an adhesive with the best adhesive properties. New compounds were tested and promising compounds were discovered.

And at some point, a substance was invented that combined maximum advantages with a minimum of disadvantages. This is how the world learned about the new family of BF adhesives.

History of the creation of BF glue

Glue BF was “born” in 1946.

It owes its appearance to the famous chemist G.S. Petrov - the man who was the first in Russia to create carbolite - the first plastic mass in the history of the country, which was later successfully launched into production.

BF glue is a viscous, medium-thick liquid of brown or Brown with specific smell filler. In 1950, BF-6 glue was proposed to be used in medicine. A bold proposal came from the famous surgeon, Professor Shkolnik Lev Grigorievich. The use of glue to protect minor wounds and burns was determined by the fact that BF-6 creates a difficult-to-remove film on the protected surface that has disinfecting properties.

Chemical composition BF glue

So, BF glue. There are several varieties of it: BF-2, BF-4, BF-6, BF-19, BF-88, BF-2N for gluing ferrous metal parts and several more varieties.

The word BF itself stands for “butyraphenol”. The digital index in the name of the glue indicates the percentage of polyvinyl butyral or polyvinyl acetal. The more of these components are present in the glue, the higher the elasticity of the dried glue. But at the same time, due to its plasticity, the glue loses in strength.

The solvent for BF adhesives is acetone, ethyl alcohol or chloroform. BF-6, used in medicine, is dissolved in ethyl alcohol.

Areas of use

BF-2 glue is used mainly for gluing hard, static materials: metals, ceramics, wood, plastic, glass. Glue is also used in restoration work. BF is not recommended for gluing dishes, since it contains phenol and aldehydes - components that are very toxic to humans.

Previously, glue was widely used in the manufacture of acoustic devices, during assembly dynamic heads and microphones. However, this list is incomplete, since the scope of application of this glue is very extensive, and it is not possible to cover it in a few lines. The main thing is that BF is a universal glue, chemically resistant, not afraid of moisture and most chemical reagents.

Chemical resistance also distinguishes other types of BF glue. For example, glue BF-4 chemical resistance differs little from BF-2 glue: the places glued with this glue are long years withstand chemical and moderate thermal loads. Unlike BF-2 glue, BF-4 is used for gluing elastic surfaces subject to bending and vibration.

True, the strength of the adhesive seam is inferior to that of BF-2 glue. But the scope of application of BF-4 glue is no less extensive than that of BF-2: metals, alloys, products made of textolite and wood, plexiglass, leather, and the like.

The gluing technology is simple but effective. In order for the surfaces to stick together reliably, they must:

thoroughly clean, degrease and adjust so that the air gap between the parts is minimal;
apply a thin layer of glue and dry it for one hour at room temperature, or 15 - 20 minutes at a temperature of 80 - 90 degrees;
after drying, apply another layer of glue to the cooled surfaces;
dry for 10 - 20 minutes, after which the parts are pressed tightly against one another using clamps.
Dry the glued parts in a heat chamber for two hours at a temperature of 140 - 160 degrees.

If for one reason or another it is not recommended to heat the parts (plastics, leather, textiles), then they can be dried at a temperature of 30 - 40 degrees, although the strength of the glued seam will be slightly lower. In principle, BF-4 glue can also be used as a primer for metal to protect it from corrosion.

As mentioned above, the glue has high adhesive properties and creates a chemically resistant film on the surface. If the glue has thickened, it can be diluted with ethyl alcohol. BF-4 is stored in glass containers or tubes.

BF-6 glue differs from other glues in that softeners and plasticizers are used as fillers in addition to ethyl alcohol. This adhesive is designed for bonding flexible surfaces. Fabrics, paper, cardboard are glued together with BF-6 glue in any combination. A well-glued seam on fabric is not inferior in strength to a stitched seam.

It should be noted that the segments of parachute canopies are glued together with this glue. BF-6 glue is also used for repairing fabric products, linen, carpets, and clothing. The technology for using BF-6 glue is somewhat different from the technology with BF-2 and BF-4.

The proposed seams are cleaned and lightly moistened with water. Next, the fabric is carefully wrung out and glue is applied to the edge to be glued in two layers, drying each time. After the glue stops sticking to the hand, the edges of the fabric on which the glue is applied are pressed against each other, after which the seam is extremely carefully heated with an iron. The iron should be pressed through a slightly damp cloth for a few seconds (not long, 2-4 seconds). After a pause of 12-15 seconds, the operation must be repeated. And so on several times until the surface to be glued is completely dry. Next, the surface must be cooled, and the gluing process can be considered complete.

Medical glue BF-6 has found wide use as a wound healing agent. The insulating film of glue applied to a wound or burn protects against pathogenic microbes from penetrating into the injured area and promotes speedy healing.

The glue is applied topically to the cleaned injury in a thin layer, so as to cover the undamaged surface. There is no need to put a bandage over it. If the integrity of the adhesive coating is damaged, another layer is applied. The film dries within a few minutes and stays on the skin for two to three days.

The only contraindication to the use of glue in medicine is hypersensitivity to the components of the glue. It is noteworthy that BF-6 glue is also used in dentistry to prevent pathogenic flora from entering the canal of a damaged tooth.

The scope of application of BF adhesives is more than extensive. These types of glue are used everywhere, be it in industry, in everyday life (by the way, the glue is respected by DIYers who are interested in modeling, since it is reliable and easy to use) and medicine. The obvious advantages of BF adhesives include accessibility, low price and reliability.

It's more difficult with shortcomings. Only the flammability of the glue and less strong bonding of surfaces compared to stronger modern substances.

Today, BF brand adhesives deservedly occupy their niche in the market of adhesive materials and, thanks to their unique combination of price and quality, have almost no competitors in certain areas of application.

GOST 12171-74

Adhesives BF-2, BF-4 and BF-6 are phenol-formaldehyde resin and polyvinyl acetate or polyvinyl butyral, dissolved in ethyl alcohol, acetone or chloroform.

BF-2 and BF-4 are intended for gluing non-ferrous metals, stainless steel, non-metals and these metals with non-metals.

BF-2N - for gluing ferrous metals.

BF-6 - for gluing tissues and treating microtraumas.

The operating temperature of BF-2 is from -60C to +80C, BF-4 and BF-6 is from -60C to + 60C. BF-2 glue has greater heat resistance than BF-4, but less elasticity.

Provides high connection strength. It is usually a thick transparent liquid of light yellow or reddish color. BF glue is not subject to rotting and corrosive influences, resistant to atmospheric influences,oils, gasoline, kerosene, mold, water and acids, limited resistance to alkalis, alcohol and acetone.

BF glue is flammable, not explosive. At +160C it releases phenol, formaldehyde and ammonia.

Guaranteed shelf life is 8 months, premium grade BF-2 is 10 months.

Universal glue BF-2.

It is a thick, clear, light yellow liquid that is usedfor gluing vases,
bas-reliefs, antique items made of faience, glass, plastic, wood and
metals, as well as for repair metal products: buckets, tanks and
etc. Not recommended for gluing dishes in which food is prepared. At
When gluing, care must be taken to ensure that no water gets into the glue.
The surfaces of the products to be glued are thoroughly cleaned of dirt, dust,
rust and traces of grease. Metal objects sanded and
washed with gasoline or other means, non-metallic - washed
hot water with soda or gasoline. Places to be glued, after them
Cleanings are thoroughly dried. Depending on the type of damage, repairs
produced as follows: edges of the product for butt gluing
apply a thin layer of glue using a wooden stick or brush and
air dry until the glue no longer sticks to
finger. Then apply a second thick layer glue and dry slightly.
The parts to be glued are tightly connected, tied with a rope or bandage.
Glued small products are placed in a pan or metal can,
pour water and put on fire. The water is brought to a boil, which
should last at least three hours, after which the pan is removed from
fire, cool in air and remove the products. Products can also be
heat in ovens or ovens at a temperature of 120-150~ for 1
hours, or over an electric stove. Holes in products, e.g.
metal, are sealed as follows: from a suitable
material (thin sheet metal, aluminum, copper, etc.) cut out a patch,
the dimensions of which should be 0.5-1 centimeter larger than the hole.
Apply a patch to the hole and glue the product (see above). Then
pour water inside the dish so that it reaches the bottom edge
the patch and did not touch it. By placing the product on electric, gas
stove or kerosene stove, boil the water for at least two hours, then remove from
fire and cool in air. If the patch is applied to the bottom of the bucket,
pelvis, etc., they are heated over the fire for one to two hours. At
gluing figurines, ashtrays, antiques, large vases and
etc., where high bonding strength is not required, you can limit yourself to
holding at room temperature for four days.

Glue BF-4,

possessing great elasticity, it is used for gluing materials exposed to vibration loads, as well as products operating in alkaline environment at low temperatures. Purpose - gluing steel, aluminum-magnesium alloys, copper, textolite, fiberglass, plexiglass, leather, ceramics, wood materials among themselves and in various combinations; use as a sublayer on metal when gluing metals to non-metallic materials using VIAM-B3 glue.

Glue BF-6 -

alcohol solution of phenol-formaldehyde resin with polyvinyl butyral, softeners and plasticizers. Bonds fabrics, mycolent paper with metallized polyethylene terephthalate film, parachute sectors, fabrics with paper and cardboard.

BF-6 has a wound-healing and antiseptic effect. It is used as an insulating agent, promotes the healing of minor skin lesions due to the formation of an insulating film on their surface, resistant to mechanical and chemical influences. By covering the tooth root with BF-6 glue, conditions are created for isolating the root canals from tissue decay products.

BF-6 glue is used topically for adults and children to protect and seal scratches and small wounds. For children under one year old, the use of BF-6 glue is not recommended. Before applying BF-6 glue, the skin area is thoroughly cleaned of contaminants. Use a cotton or gauze swab to stop the bleeding and dry the area to be covered with glue. The latter is applied to the skin in a thin, even layer until the damaged area and adjacent undamaged tissues are completely covered (do not apply a bandage). If the integrity of the film is damaged, a new film is applied on top of it. The film forms within 2-5 minutes after applying BF-6 and remains firmly on the skin for 2-3 days.

This glue is also used for repairing clothes, linen, carpets
etc. It is a thick clear liquid yellow or
Red. The areas of products to be glued must first be
clean from dust with a brush, moisten with warm water and squeeze well.
Having straightened the edges of the wetted areas of the fabric, apply two layers of glue to them and
air dry after applying each layer until the glue is
will stop sticking to your finger. Then the objects to be glued are connected and
press on them with a hot iron (carefully). The iron is pressed through
dampened cloth for 2-3 seconds with an interval of 10-15 seconds until
until the surface to be glued is dry. After cooling to
At room temperature, the product is ready for use.

INSTRUCTIONS FOR USE
GLUE BF-2

1. The surfaces to be bonded must be sanded until smooth.
   roughness and degreased. Remove corundum residues with a rag, do not
   leaving fibers.
2. The glue is applied evenly to both surfaces to be bonded.
   layer, avoiding drips and uncoated areas (can be applied with a brush,
   dipping). The first layer of glue is allowed to dry for 40-60 minutes
3. Apply the second layer, observing the precautions according to step 2.
   The second layer is dried for 45-55 minutes. Bonded surfaces
   combined, clamped into a clamp providing a force of at least 4.5
   kgf/cm2 and placed in the oven.
4. Curing is carried out for 1 hour at a temperature of 180 °C. Time
   curing is calculated from the moment the part is heated to the specified
   temperature. Curing temperature is controlled from a distance
   more than 1 cm from the part. At the end of curing, turn off the heating of the oven and leave the cabinet
   for natural cooling without removing parts. In some cases
   It is possible to remove the part.

"HOT" method of gluing with glue BF-4:
For metals, ceramics, glass, wood: clean and degrease the surfaces to be bonded. Then apply an even layer of glue on them and dry for 1 hour. After this, compress the parts tightly, maintain at a temperature of 130–140°C for at least 40 minutes and slowly cool to room temperature. For fabrics: moisten fabrics with water and wring out. Apply a thin layer of glue, dry for 1 hour, combine and carefully iron through a thin cloth. The product can be used after 5 hours.
"COLD" gluing method:
Thoroughly clean and degrease the surfaces to be glued, apply an even layer of glue to them. After 15–20 minutes, apply a second layer and after 1–2 minutes press firmly. The product can be used within a day.

Do you know that

The popular name for BF glue is “Boris Fedorovich”. Often used as a substitute for alcohol. To do this, water was added to the glue, the jar with glue was placed on drilling machine(or milling machine), a drill (or a piece of welding electrode) was inserted into it, and the machine was turned on. As a result, during the rotation of the twist drill, adhesive substances collected on it, and a more or less pure solvent (ethyl alcohol) remained in the jar. This procedure was called "drilling out." The safety of the prepared drink depended entirely on the skill of the machine operator and, of course, on the composition of the glue itself. At home, manual preparation was usually used to prepare alcohol-containing liquid. electric drill, around the drill of which rags, ropes, etc. were wound. The procedure for obtaining alcohol-containing liquid at home was called “kick out the heifer” (option: “kick out the goat”). “Telkom” (or “goat”) was the name given to the mass of adhesive fraction concentrated on the drill.

Currently, the method is unsuitable, because BF has not been made with ethyl alcohol for a long time, and the chemistry on which the bulk of adhesives, conventionally called “BF”, are now made has been little studied by science and is certainly not good for health.

The online store "Khimprom-M" sells paint and varnish products. Primers, varnishes, paints are delivered to regions of Russia and CIS countries.

Glue BF 2, BF 4 can be bought in Moscow at manufacturer prices. This is a universal product suitable for glass, metal, plastic and ceramics. Its composition is based on the active component butyraphenol, which allows it to work with various materials and textures.

Characteristics of BF 2 glue:

1. High strength and versatility.
2. Suitable for use in aggressive environments and at high temperatures.
3. Resistant to water and chemicals.
4. Good elasticity, can be used for connecting and moving parts.
5. Excellent connecting ability for creating solid structures.

To buy BF 2 glue, call the contact numbers. Delivery is possible by rail and by car. The Khimprom-M online store sells BF 2 glue wholesale and retail. If the customer wishes, the goods are sent to the chosen transport company, while delivery of products to the transport terminal is carried out at our expense.

My husband and I own it a store on construction market. Most We order assortment from you, including this type of glue. There are always pre-orders for it, as customers are satisfied with the price-quality ratio.

Phenolpolyvinyl acetate glue brand bf 2 is used to restore the integrity of objects from:

• various metals, including non-ferrous and stainless steel;
• faience, marble, plastic;
• wood, as well as glass;
• combined materials.

It is often used for gluing antique dishes and furniture, as well as in modeling, medicine and manufacturing.

Note!

This composition cannot be used for the reconstruction of dishes and various vessels that are used for preparing, storing or eating food.

Instructions for using glue Bf 2

1. Carefully treat the surfaces that will be glued. If objects are made of metal, they need to be cleaned with a special “sandpaper” and washed with gasoline. Instead, you can use any other composition that can degrease the surface. If the products are made of non-metallic material, they are cleaned using hot water with baking soda.
2. Apply glue to two parts of the object in an even, thin layer. To do this, you can use a brush or simply dip small parts into a container of glue. The first layer dries within 60 minutes – “ hot way"or 20 minutes - "cold method".
3. Apply a second layer of glue using the same method as the previous one. Make sure that no untreated areas are left and no smudges form.

If you want to use the hot method, then the two parts of the object treated with the composition must be clamped in a vice and placed in the oven for 1 hour.

The temperature inside should be about 130-140 degrees Celsius. This method is suitable for working with metal, earthenware, and marble.

With the cold gluing method, 2-3 minutes after applying the second layer, the parts of the product are pressed tightly against each other and put away in a warm, ventilated room for a day. Suitable for vases, dishes, models.

How to replace Bf 2 glue

Finding an analogue of Bf 2 glue is almost impossible. This composition is unique and there is no other one like it, or even similar, on sale.

Some experts advise using an adhesive called “Super Cement”, which can also be used for gluing the most different materials. But it does not always perform well when working with metals.

You can choose epoxy adhesive in tubes that are ready for use. Craftsmen who are accustomed to regulating the hardening time of the glue themselves and adjusting its characteristics buy epoxy resin.