Professional Polymer Technology
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Glue is one of the oldest and most versatile adhesives. […]
Glue is one of the oldest and most versatile adhesives. From the use of white glue in the home process to the furniture and even the commercial use of plastic manufacturing glue, glue is part of your daily life.
Adhesives generally refer to any adhesive that is applied in a liquid form and dried to hold the material together. Technically, true gum is made from organic compounds such as animal collagen. However, many of the products sold as glue are actually synthetic adhesives made from polyvinyl acetate (PVA) emulsions. These synthetic adhesives are sometimes referred to as gum or cement.
The organic glue starts from washing the animal skin, bones and other tissues to remove dirt and debris. The animal tissue is then soaked in water to begin to soften them and begin to release collagen. After soaking, treated with lime and acid to promote the decomposition of the tissue and release more collagen. The acid is then removed and the collagen and water mixture is cooked to produce a thick gelatin-like substance that can be further purified as needed and treated with other chemicals and ingredients to produce the desired type of glue.
The compounds in the synthetic adhesive are separated by chemical reaction. Synthetic adhesive, vinyl acetate behind the basic ingredients through the chemical reaction of acetylene and acetic acid made of. In the presence of a catalyst, the molecular weight is increased to produce a polymer. A similar chemical method was used to prepare the vinyl paint. Suitable mixing equipment is essential for the production of rugged synthetic adhesives. The gum is an emulsion made by mixing collagen or a polymer into a solvent such as water. Appropriate mixing levels are essential to ensure adequate mixing of the emulsion. Otherwise, the glue may be bottled once to make it ineffective.