Characteristics and methods of preparation of casein glue

Since ancient times, casein glue has been used as a versatile adhesive. This natural glue, which comes from milk proteins, has a special set of properties that allow it to be used for a wide range of tasks, especially in the areas of woodworking and art. It is an appealing substitute for synthetic glues due to its potent bonding properties and eco-friendliness.

Casein, a protein present in milk, is the main component of casein glue. To make the adhesive, this protein is extracted, processed, and then ground into a powder, which is combined with water. The strength of casein glue is one of its main advantages. It is perfect for joining wood and other porous materials because, when properly prepared, it forms a strong bond that can withstand a great deal of stress.

The ability of casein glue to withstand variations in humidity and temperature is another benefit. In contrast to many synthetic adhesives, casein glue remains adhesive even under changing environmental conditions without breaking down or becoming brittle. Because of this, it is especially helpful in situations where durability and stability are crucial, like when making furniture or restoring artwork.

Making casein glue is a simple procedure. To activate its adhesive properties, casein powder is usually combined with water and an alkaline material like baking soda or lime. After that, the mixture is stirred until it has a uniform, smooth texture. Even novices and enthusiasts can use casein glue because of how easy it is to prepare.

Apart from its usefulness, casein glue has a low environmental impact. Compared to many synthetic alternatives, it presents less of a risk to the environment and human health because it is made from natural, renewable resources. This makes it the go-to option for professionals and environmentally conscious people looking for sustainable solutions in their work.

In general, casein glue is notable for its robustness, adaptability, and environmental friendliness. Knowing the properties and preparation techniques of casein glue can help you create new possibilities for your projects, whether you’re an artist, woodworker, or just someone searching for a trustworthy adhesive.

Composition and properties of glue

Casein has granules that are both small and large and appears as a grayish powder. What exactly is this tool made of? Calcium casein, phosphates, nitrates, and several other important amino acids are all found in the chemical makeup of casein, or milk protein. The composition of glue containing casein can vary based on the brand and intended application. The following additives are included in the adhesive composition, which is most frequently used for wood:

• lime;
• rosin;
• kerosene;
• water;
• sodium bicarbonate and t.D.

It’s consistent like a cluster. Because all of its parts are eco-friendly, the furniture for which the product was used to glue it together bears the "Eco" mark.

The following are the technical attributes and qualities of the dry material:

• Types of glue – “ordinary”, “extra”;
• appearance – gray powder that does not have extraneous inclusions, the presence of a small number of lumps is permissible (decay when rubbing with the hands);
• The smell is specific, not putrefactive;
• solubility in water is good, without a trace;
• dynamic viscosity at room temperature-10.8-27 p;
• Preservation of fluidity after dilution: for "extrays" – 5 hours, for "ordinary" – 4 hours;
• The strength of gluing wood during dry tests – for "Extra" – 105 kgf/sq. cm, for "ordinary" – 75 kgf/sq. cm.

The purpose of the product

Glue is commonly referred to as carpentry because its primary application is in the production of furniture and other wood products. It is used extensively in the furniture-making process to help glue wooden details, leatherette, plastic, and skin frames. The material’s improvement in the tree’s structure and environmental friendliness make it unique.

In the construction industry, casein glue is also highly sought-after. It can be found in many brands’ putty, enamels, and finishing products. Glue is also added to facade paints to increase their resistance, resulting in a longer-lasting coating. fixed labels on glassware and dishes. Furthermore, the substance will assist in attaching goods from:

• cardboard;
• fabrics;
• faience;
• foam;
• polystyrene foam;
• Plywood.

In the chemical industry, casein is a valuable raw material that is used to prepare ceramics and plastic, and casein glue facilitates the easy bonding of these materials.

Moreover, casein powder is utilized in the food business, printing houses, painting, and the creation of pigments. In order to improve the nutritional value of children’s mixes, it can even be added as an additive.

Use in icon painting

Nitrogen and sulfur are two of the chemical components of proteins, which make up the glue’s composition. Because of this, the material has antifungal and antiseptic qualities and keeps the products it treats from decaying. These characteristics of glue dictate its widespread use in icon painting methods. The following are the primary components that can be added to the finished glue for this sphere:

• drill;
• caustic lime;
• caustic potassium, soda;
• carbon dioxide ammonium;
• ammonia.

These alkaline solvents all contribute to the creation of glue with outstanding adhesive properties and high adhesion. The resulting tool can also emulsify varnishes and oils. Alkalis are added to stop the material from cracking after it has completely dried. Formalin glue is combined with vinegar clay to yield an exceptionally strong coating.

Casein glue is a multipurpose, environmentally friendly glue that is commonly used in bookbinding, woodworking, and crafts. It is made from milk proteins. Casein glue, which is well-known for its powerful bonding properties and moisture resistance after it has fully cured, needs to be properly prepared in order to function at its best. In order to activate the adhesive properties, dissolve the casein powder in water, add an alkaline material (such as lime), and mix until smooth. For many conventional and sustainable applications, its natural origin and robustness make it the ideal option.

Casein and its manufacturers

After the milk is separated from its precursor, caseinogen, casein is obtained. This material, which exists as calcium casein in milk, can be referred to as a component of the complex structure of milk. Many factors contribute to the coagulation of casein; cottage cheese is created when lactic acid bacteria’s enzymes infiltrate milk. Technical casein is derived from milk and added to glue in industry.

Four types of casein are used to produce technical casein:

1. Higher grade. Represented by the same small (up to 5 mm) granules of a white, cream shade, does not even have the slightest intra.
2. First grade. The color is slightly yellowish, the grains are the same in size, while some sticking is allowed.
3. The second variety. Yellow powder of grains up to 10 mm size, the presence of lumps is permissible.
4. Third variety. The color of the powder is dark yellow, brown inclusions are possible.

Plants that process milk provide the raw materials needed to make glue. West Coast products are in the highest demand. Numerous cutting-edge technologies are employed in Europe and America to produce casein of the greatest quality at a reasonable cost (ejector method, by coagulation of casein and other methods).

DIY glue preparation

There are several methods for producing high-quality casein glue at home. They can glue any of the materials mentioned above in the future. What components make up the remedy on its own? The simplest "cold" cottage cheese recipe is this one:

• take 40 g of store cottage cheese;
• Pull the cottage cheese through a sieve to get small powder;
• add to a mass of 10 ml of ammonia;
• Mix the mixture well, the product is ready.

You can take a more challenging route and make milk glue. To do this, heat a liter of milk without bringing it to a boil and add nine teaspoons of vinegar essence. The mixture is heated until cottage cheese chunks start to form. It is spread out in a pan, filtered through gauze, and mixed with three tablespoons of soda and a few drops of water. After thoroughly mixing them and allowing them to cool, they warm until the mass starts to bubble. The glue is prepared.

How can glue be diluted using the final casein powder? The casein powder is diluted in accordance with the guidelines. Typically, the ratios of glue and water are the same. Once the mixture is ready for use, it is insisted upon for 40 minutes.

You can make glue with casein powder (not glue, specifically casein), and it will be nearly industrial quality:

• Combine 20 g of the substance with 100 ml of water;
• let stand for 30 minutes;
• introduce 6 g of drill;
• 30 minutes to warm the mass in a water bath (at 50 degrees).

Another method for making glue is to use 100 ml of water and 20 g of casein every hour, along with 10 ml of caustic soda (50 %) and 20 ml of ammonia (25 %). Diluting the glue with water is acceptable if it is excessively thick.

The second method is combining 20 g of powdered casein, 4 g of rosin, 40 ml of water, and 1 g of bastard lime. After 120 minutes, a hot mixture of two grams of drill and twelve tablespoons of water is prepared, added, and thoroughly mixed with the original mass. Add 2 ml of ammonia alcohol and 20 ml of water. The glue is prepared.

Industrial production of glue

Typically, Sychuzhny casein is used to make glue during production. Following the dairy and oil product preparation, some raw material is left over, which is then mixed with Sychuzhny Enlarm. According to alternative technology, casein is referred to as acid-milk in its final form after acids are added to prepare glue.

Casein grains sink to the bottom of the small milk after it has been treated with acid serum. The grains are then compacted by repeatedly washing it. Pressing or centrifugation are used to remove moisture. Once the casein has been dried and crushed, add more ingredients to the mixture to create glue.

Casein glue is an adaptable glue that’s frequently used for a variety of tasks, such as bookbinding, woodworking, and art projects. Casein, the main component, is a protein that is present in milk, which makes it a natural and sustainable choice. A prominent feature of casein glue is its robust adhesion, particularly on porous materials such as paper and wood.

Making casein glue is a simple process that can be completed at home using basic supplies. To begin, stir casein powder into water until a paste-like consistency is achieved. To enhance the adhesive qualities of the glue, a small quantity of an alkali, like borax, should be added next. For particular projects, this mixture can be adjusted to get the right thickness and strength.

The fact that casein glue works well with a range of materials—including wood, paper, fabric, and even some plastics—is one of its benefits. Because of this, it can be used for a variety of crafts and repairs. Furthermore, casein glue dries to a clear finish, which qualifies it for uses in which appearance is crucial.

It’s important to take the necessary safety precautions when using casein glue because some people may be allergic to milk proteins. To avoid spoiling, keep any leftover glue in the refrigerator in an airtight container. Casein glue can be used for a long time if handled and stored carefully.

To sum up, casein glue provides a robust, natural, and adaptable adhesive solution for a range of applications. Both pros and amateurs who enjoy do-it-yourself projects choose it for its versatility and ease of preparation. People can use casein glue in their creative projects and repair jobs by being aware of its properties and preparation techniques.

Video on the topic

Animal glue. Subtleties in technology

Casein (casein protein, protein). How to use?

Figures from milk. Casein

Powerful glue from milk))

Casein workshop

Broadcast No. 29 “Glue in the carpentry workshop” Guest: Tatyana Matveeva, engineer-technologist Clearite-Russia

Preparation of meading glue