Making glue at home

Have you ever wondered how to make glue at home? Yes you can make homemade glue. But why do you want to do it?

To answer you, we have to say that many of these adhesives are safe to help children, and you can make exactly the adhesive you like in the right amounts.

It is true that store adhesives such as adhesive tape in Isfahan are mostly cheap and effective, but some special adhesives are expensive and difficult to find.

Another reason is that it is fun. Making glue is a craft in itself and this is something you will enjoy. Another reason is that in some cases you can make better glue for your purposes. This is especially true if Being an art project with special needs is more true.

In this activity you will be able to make glue from milk! The main ingredient of a protein in milk is called casein, which you turn into your glue.

Materials

• ½  Cup (118 ml) skim milk
• 1 tablespoon (15 ml) vinegar (acetic acid solution)
• 1½ teaspoon (7 ml) baking soda (sodium bicarbonate)
• 1 tablespoon (15 ml) water
• Stirring spoon
• Plastic funnel
• Filter paper coffee, cotton cloth or paper towel
• Small plastic cup
• Disposable plastic cup

Safety suggestions

• Safety glasses are required.
• Protective clothing is recommended.
• Do not eat or drink any of the ingredients used in this activity.
• If you are allergic to casein or other milk proteins, you should use gloves.
• Wash your hands thoroughly after this activity.
• Parents or adults to help you.

Disposal: There are no hazardous substances in this activity and everything can be disposed of in the trash. Containers should be cleaned for reuse.

Method

• Under the supervision of an adult, heat 3 cups (118 ml) of skim milk in a container in the microwave. The temperature should be around 165 degrees Fahrenheit (74 degrees Celsius). Do not overheat the milk.
• Remove the milk container from the microwave.
• Stir frequently, add vinegar to the milk. Continue stirring until no more lumps form.
• Allow to stand for 5 minutes. You should observe the separation of solids (which sink to the bottom) from the liquid (which remains at the top).
• Put a paper coffee filter (or cotton cloth or paper towel) in the funnel. Place a plastic cup under the funnel.
• First pour the liquid and then pour the solids into the funnel.
• Pour the filtered liquid down the drain and store the solids.
• Using a spoon, gently squeeze the excess liquid left in the solid. Transfer the solid from the paper filter to a plastic cup.
• Add a tablespoon of water to the solids in a plastic cup. Mix it well with a spoon.
• Add the baking soda slowly and mix well. Repeat this until no more gas bubbles form. (You may need a little more than 1 teaspoon (1.2 ml) of baking soda – but do not use too much.)

Your glue is ready! This glue will be usable for about a day and then it will break down. The damaged glue can be disposed of in the trash.

Clean your work area before continuing the test. Soap and water can be used to clean the dishes. The coffee filter (or cotton cloth or paper towel) can be disposed of in the trash.

The first part of this experiment, using vinegar, causes the casein protein to bind together and separate from the liquid part of the milk. The protein solids are called “curd” and the liquid part is called “whey”.

Adhesives are formed because the chemical reaction between milk and vinegar creates a bond between many casein molecules. These bonds form tangled chains, and these tangled chains cause the adhesive to stick together. It is important. Fat prevents the reaction and prevents the polymer chains from sticking together.

This article is presented by Zagros Chesb Sepahan Production Group

Adhesive is usually a material that allows two materials to be joined together. There are all kinds of general and versatile adhesives on the market, but there are some materials that require a certain type of adhesive to bond them. Choosing the Best Adhesive It can be complicated for a particular application. There are many variables to consider when choosing a liquid adhesive or adhesive tape. This shopping guide will help you easily choose the best type of adhesive to suit your project. Please be with us.

When choosing the right adhesive, you will find that adhesives are designed for almost any type of application and material. Here are some of the adhesives. It is possible that you have used some of these before. If you are really stuck with which adhesive to use, all you have to do is read the information on the adhesive packaging to choose one that is right for your project.

Glue stick

As the name implies, this adhesive is made for wood. Wood adhesive is available in waterproof and conventional formulas. These types of adhesives are available with different adhesion strengths, so be sure to choose the right type for you. You do.

Super glue

This is an instant adjustment adhesive with the ability to withstand the most impact and pressure. This material is available in liquid and gel form and is suitable for different types of jobs. Use this type of adhesive with caution and follow its instructions.

Epoxy adhesive

This is one of the strongest adhesives we have. This material is basically an industrial adhesive with excellent strength and good adhesion and there are two parts that are mixed together before use. It can withstand shock Chemical resistant and can even be used underwater.

Construction adhesive

As the name implies, this adhesive is used in construction. It can effectively reduce the need for screws and other fasteners. This type of adhesive is usually based on polyurethane.

Wall tile adhesive

This adhesive is available in both powder and cement options. When working with non-porous tiles such as porcelain, it is better to use powder-based adhesive.

Liquid adhesives and glass tape can be used manually or with special machines, and are often cheaper than welding or other assembly equipment.

Choosing glue

What you need to know before choosing an adhesive There are a few important questions to ask yourself before choosing an adhesive to make your selection process easier.

• On what surface do you put the glue?
• Is the work surface clean?
• Is the work surface smooth?
• What is the operating temperature of the product?
• Is it for indoor or outdoor use?
• Is this a temporary or permanent program?

Cleaning the surface

The number one mistake that people make when using adhesive is not to clean the surface of the material before gluing. These can act as a barrier between the adhesive and the material and cause the adhesion to be lost. Always be dry and free of contamination.

The temperature and the amount of exposure to the elements all affect the performance of the adhesive. You need to consider whether the adhesives are exposed to heat for a long time or for a short time? The heat has the ability to melt and loosen some of the adhesives. On the other hand, the cold can cause some adhesives to harden and reduce the amount of adhesion.

You should also be aware that adhesives are used in an indoor or outdoor application. Elements such as moisture, sunlight and dust can all be effective in destroying adhesives.

Before proposing the above, it should be noted that quality is basically a relative category, so in choosing the adhesive tape, each consumer should seek the desired quality by comparatively measuring the following factors.

• Adhesion: The force required to separate the adhesive tape from a well-adhered surface. Its amount can be measured by a dynamometer at the defined level and compared with the reference sample.
• Film Ingredients: We have already explained this.
• Thickness: Usually the thickness of adhesive tapes used in the packaging industry is about 35 microns to 65 microns.

An important issue in this case is the uniformity of thickness at different points along the length of the strip. Non-uniformity causes unwanted rupture during consumption. For better control, according to the basic rules of quality control, different samples of cargo should be randomly selected and the amount of thickness should be controlled at different points of length. Needless to say, thickness will have a virtual measure of tolerance. Another way to control thickness is to use weight. Manufacturers usually know the heat (weight per unit area) of their adhesives. By having the heat and the length of the ring, you can easily make sure of its true thickness or length by weighing each ring.

• Type of adhesive: In packaging adhesives, it is usually polycrylic with water or chemical solvent. The second type has more quality, efficiency and price than the first type. It is also used for cold weather (goods stored and carried in the cold store) and more weights.
• The amount of traction: depends on the type and quality of the film. The elongation rate in BOPP films (the best type for producing adhesive tape) is up to 180%.يعني فيلم در شرايط متعارف پس از حدود 180% كشش پاره مي شود.
• Shear strength: refers to the resistance of the adhesive to weight. It is measured in units of minutes per minute.
• Remaining effect of adhesive on the surface: If we remove the adhesive glued on the surface after a short time, how much effect of the adhesive will remain on the surface?
• Unwind: The force required to open the adhesive from the ring, which depends on the quality of the material that is sprayed on the back of the tape for this purpose. This release coating allows the adhesive to be opened in a controlled manner. This is especially important when using carton automatic gluing machines. Adhesives that have a defective quality of the release coating or the adhesive material, or without They are difficult to control or open with a lot of noise, and today silent tapes are produced by improving the quality of the film and the release material.
• Production time: Usually the tapes must be used within a certain period after production. This time varies in different types of adhesives. To identify the remaining adhesives, you can pay attention to their color. Over time, the color becomes dull. Also, the releasing coating material loses its properties over time and the adhesive does not open easily. The expired adhesive tape is easily removed from the surface and a large part of the adhesive material remains on the surface.
• Simple microscopic information: In this case, we can refer to the analysis of the film and adhesive structure, but this operation is specialized and costly.

An easier way is to physically examine the adhesive tape with a laboratory microscope. Quality film has smooth and smooth edges. In the structure of MOPP films (where the film is stretched in one direction only during production and is not suitable for the production of adhesive tape), clear polarized structures are seen over the entire displacement surface, these structures are not present in BOPP films.
The microscopic arrangement of the coated adhesive layer in the types is of very regular and uniform quality.