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2. Вулканизация каучуков Органические перекиси серы?
3. Сухая коллоидная кремниевая кислота?
Рекомендации:
1. Розова Н.К. Менеджмент качества – СПБ.: Питер, 2002.
2. Сергеев А.Г., Латышев М.В., Тергория В.В. Метрология. Стандартизация. Сертификация. - М.: Введение, 2003.
3. Крылова Г.Д. Основы стандартизации, сертификации, метрологии. - М.: Юнити-Дана, 2003.
4. Уэйтс И.М. Стандартизация, метрология, сертификация. - М.: Юрама, 2003.
5. Гиссин В.И. Управление качеством продукции. - Ростов-на-Дону: Феникс, 2000.
THEME: QUALITY OF RUBBER PRODUCTS
PLAN:
1. INFORMATION ABOUT RUBBER
2. QUALITY OF RUBBER PRODUCTS
3. PROPERTIES OF RUBBER PRODUCTS
Rubber, gum [lot. rubber (resin)], volcanic isat is a product that can be vulcanized with rubber with very high elastic deformation (up to 1000%). The main components of a vulcanized rubber mixture are natural or synthetic rubber, vulcanizing agents, vulcanization accelerators, vulcanization accelerator activators, fillers, dispersants, plasticizers, non-abrasive, non-abrasive substances, antiozones, dyes, etc. R. is used for the following purposes. main groups:
Such R (tires, shoes, floor coverings, conveyor belts, belts, gaskets, seals, shock absorbers, household items, etc.) are designed for operation at temperatures from 50 to +150; Heat-resistant R for long-term use at temperatures above 150 ° (for car parts, electric motors, aircraft); - cold-resistant R. for operation in transactions below 50 °, long-term, labor-intensive (hose, gasket, various containers, etc.) for gasoline, kerosene, oil, lubricants, various hydrocarbons; various erasers resistant to environmental influences R. Products from such R. can be exposed to acids, alkalis, salts, vapors, ozone, solvents, water, etc. intended for; gas-filled (porous) R. radiation-resistant R. parts of X-ray machines used in the manufacture of protective clothing for those working with radioactive isotopes; the dielectric constant of the R. dielectric is small, the electrical resistance is high, it is mainly used for production of various cables. The main material that determines the property of R. is rubber. Rubber makes up 10–98% of R. Products used at 150–180°C are made from R. with butyl rubber or an ethylene copolymer. This R. is resistant to ozone and aggressive environments. Cold-resistant rubber is made from low-molecular rubbers with flexible intermolecular forces. For trawls of 300° and above, rubbers based on elemental inorganic rubbers (organosilicon and organoaluminum) are used. Mineral filler R. is good dielectric. A high-strength acetylene-type structure can be added to the rubber to form a conductive R. Fluorinated and nitrile rubbers are commonly used to make light-blocking Rs.
Sulfur, organic peroxides (for example, benzoyl peroxide, dicumal peroxide), apkylphenol-formaldehyde and epoxy resins, diazo compounds, diamines, and other bifunctional compounds are used to vulcanize rubbers. Also used radiation vulcanization. To speed up vulcanization, special accelerators and their activators are added to P. As vulcanization accelerators with sulfur, compounds such as sulfenamides, dicarbamides, turamdisulfide, mercaptobenzothiazole, diphenylguanidine are used. Dry colloidal silicic acid,chalk, kaolin, metal oxides, silicates, and R. barites are widely used as fillers. Fillers enhance virginity R.More than 50% of the world's synthetic rubbers and their R. based on tire and.ch. spent. R. is widely used in various fields as a structural material due to its elasticity over a wide temperature range, damping properties, friction resistance, low water and gas permeability, and other properties.
Questions:
1. What are the main components of vulcanized rubber mixture?
2. Vulcanization of rubber Organic perekisi series?
3. Dry colloidal silicic acid?
References:
1. Rosova N.K. Quality Management - SPB .: Peter, 2002.
2. Sergeev A.G., Latyshev M.V., Tergoria V.V. Metrology. Standardization. Certification. - m .: Introduction, 2003.
3. Krilova G.D. Basics of standardization, certification, metrology. - m .: Uniti-Dana, 2003.
4. Wations I.M. Standardization, metrology, certification. - m .: Yurama, 2003.
5. Gissin V.I. Product quality management. - Rostov-on-Don: Phoenix, 2000.
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