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Adhesives Adhesives are used for firmly and permanently joining objects made of the same or different materials. In order for the union to be achieved, it is necessary that the glue adheres well to both surfaces, that during the union the glue does not harden too early, and that after drying it maintains a firm...
Identification of polyplastics Identification of polyplastics is not an easy task even for experts in well-equipped laboratories. The type, that is, the group of polyplasts for mastering at home, is determined much easier, more successfully. All you need for this test is a match and, of course, a piece of the tested substance, and also...
Car chemical care Car tire protection During prolonged use or storage when not in use, tires become brittle, hard and lose elasticity. This process is slow, it takes several years. The condition of car tires depends primarily on the effects of oxygen, ozone and ultraviolet radiation. Heat accelerates reactions that destroy…
Etching Etching is the chemical dissolution of the surface layers of metals. So, for example, when making a copper engraving, a copper plate is covered with wax, the desired image or text is drawn with a needle and it is covered with nitric acid. The acid will corrode surfaces not covered with wax. The same applies to etching...
Chemical cleaning Main principles: if the textile gets dirty, it is recommended to clean the stain immediately, because fresh stains are removed much easier. Soap and lukewarm water are often sufficient for quick intervention. The first step in cleaning is to determine the origin of the impurity (e.g. vegetable oil, mineral...
Craftsmanship with chemicals and polyplasts In the past, chemistry was considered "black magic", while today we encounter it at every step, including in the household. We know that we can easily wash clothes with "Black Bull" or other detergents. Many people know that from tetraethylol...
Craftsmanship with chemicals and polyplasts In the past, chemistry was considered "black magic", while today we encounter it at every step, including in the household. We know that we can easily wash clothes with "Black Bull" or other detergents. Many people know that from tetraethylol...