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    Home > Coatings News > Paints and Coatings Market > Coating knowledge: historical development of synthetic resin

    Coating knowledge: historical development of synthetic resin

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: some tree secretions often form resin, but amber is the fossil of resin Although shellac is also regarded as resin, it is the deposit secreted by lac insect on the tree Shellac paint made of shellac was only used as wood preservative at first, but with the invention of electric motor, it became the earliest insulating paint However, in the 20th century, natural products have been unable to meet the needs of electrification, which makes people have to find new cheap substitutes As early as 1872, A Bayer, a German chemist, first found that phenol and formaldehyde can quickly form red brown hard lumps or viscous substances when heated under acidic conditions, but because they have no Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Paint House News: some tree secretions often form resin, but amber is the fossil of resin Although shellac is also regarded as resin, it is the deposit secreted by lac insect on the tree Shellac paint made of shellac was only used as wood preservative at first, but with the invention of electric motor, it became the earliest insulating paint However, in the 20th century, natural products have been unable to meet the needs of electrification, which makes people have to find new cheap substitutes As early as 1872, A Bayer, a German chemist, first found that phenol and formaldehyde can quickly form a reddish brown hard block or viscous substance when heated under acid conditions, but the experiment was stopped because they could not be purified by classical methods Since the 20th century, phenol has been widely obtained from coal tar and formaldehyde has been widely produced as preservatives Therefore, the reaction products of phenol and formaldehyde have attracted more attention We hope to develop useful products Although many people have spent a lot of labor on them, they have not achieved the expected results In 1904, Baekeland and his assistant also carried out this research The original purpose was to make insulating paint instead of natural resin After three years of hard work, in the summer of 1907, they not only made insulating paint, but also made real synthetic plastic material bakelite, which is known as "bakelite", "bakelite" or phenolic resin As soon as bakelite came out, manufacturers soon found that it could not only make a variety of electrical insulation products, but also make daily necessities T Edison used it to make records, and soon announced in the advertisement that it had already made thousands of products with bakelite Therefore, bakelite's invention was hailed as the "alchemy" of the 20th century for a while Phenolic resin with coal tar as the raw particle has always been the first in the production of various synthetic resins before 1940, with an annual output of more than 200000 tons However, with the development of petrochemical industry, the production of polymerized synthetic resins such as polyethylene, polypropylene, PVC and polystyrene has also been expanding With the establishment of many large factories with an annual output of more than 100000 tons of such products, they have become There are four kinds of synthetic resins with the largest production Synthetic resin plus additives can produce plastic products through various molding methods Up to now, there are dozens of types of plastics The annual output of the world is about 120 million tons, and that of China is more than 5 million tons They have become the basic materials for production, life and national defense construction Synthetic resin is the most important component of plastics, its content in plastics is generally 40% - 100% Because of its high content and the properties of resin often determine the properties of plastics, people often regard resin as a synonym of plastics For example, PVC resin and PVC plastic, phenolic resin and phenolic plastic are confused In fact, resin and plastic are two different concepts Resin is a kind of raw polymer, which is not only used to make plastics, but also used as raw materials for coatings, adhesives and synthetic fibers In addition to a very small part of plastics containing 100% resin, the vast majority of plastics, in addition to the main component resin, also need to add other substances Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,
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