{"id":7108,"date":"2022-06-04T09:57:54","date_gmt":"2022-06-04T07:57:54","guid":{"rendered":"https:\/\/ecocranes.hu\/felhasznalt-alapanyagaink-a-gumi-a-kaucsuk-osztalyozasa\/"},"modified":"2025-10-13T16:42:39","modified_gmt":"2025-10-13T14:42:39","slug":"felhasznalt-alapanyagaink-a-gumi-a-kaucsuk-osztalyozasa","status":"publish","type":"post","link":"https:\/\/ecocranes.hu\/en\/felhasznalt-alapanyagaink-a-gumi-a-kaucsuk-osztalyozasa\/","title":{"rendered":"Raw materials used: rubber \u2013 Classification of rubber"},"content":{"rendered":"<p><strong>In our previous articles, we have already reviewed how the <\/strong><a href=\"https:\/\/ecocranes.hu\/en\/felhasznalt-alapanyagaink-a-gumi\/\"><strong>rubber<\/strong><\/a><strong>, as well as what makes molecular biology so unique. <a href=\"https:\/\/ecocranes.hu\/en\/felhasznalt-alapanyagaink-a-gumi-a-kaucsuk-szerkezete\/\">spatial structure<\/a><\/strong><strong>, which is responsible for its unrivalled flexibility and popularity. However, rubber is not yet rubber; in order to manufacture rubber by enhancing its beneficial properties, the rubber must be vulcanised. However, it does matter what type of rubber is used to make the rubber.<\/strong><\/p>\n<h2>Not all rubber is the same<\/h2>\n<p>\t\tSince the rubber used has a fundamental impact on the manufactured<strong> rubber quality<\/strong>, and its properties, it is worth reviewing the classification of rubbers used in rubber manufacturing.<br \/>\nThe most basic division is described in the previous part of our series of articles. <strong>natural rubber and synthetic rubber<\/strong> distinction between.<br \/>\nThe latter were created due to a shortage of raw materials following the boom in rubber production. These materials <strong>in chemical plants<\/strong>, mainly from crude oil and natural gas.<\/p>\n<blockquote><p>In certain cases and areas of application <em>synthetic rubbers have more favourable properties than natural rubber<\/em>, As a result, synthetic rubber, which is generally more expensive than natural rubber, now accounts for around 50 per cent of the raw material used in rubber production.<\/p><\/blockquote>\n<p>In our previous article, we already mentioned rubber \u2013 especially <a href=\"https:\/\/ecocranes.hu\/en\/acelok-es-mas-anyagok-szakitoszilardsaga\/\">pull<\/a> following \u2013 its deformation and the rearrangement of the rubber macromolecules after the force has ceased to act.<br \/>\n<strong>In the case of cyclic loading, the deformation curves (histograms) of the first few loading cycles will be similar in shape but different in value.<\/strong> This phenomenon <strong>Mullins phenomenon or Mullins effect<\/strong> let's call it.\t\t<\/p>\n<h2>The most characteristic properties of different types of rubber<\/h2>\n<p><em><u>Natural rubber<\/u><\/em><\/p>\n<p>In the spatial structure of natural rubber, repeating molecular segments follow each other regularly in the same position, resulting in a relatively high degree of orderliness.<\/p>\n<p>Natural rubber <strong>always contains protein-based substances<\/strong>, which have strong interactions between their polar molecular groups, exhibit a higher than average degree of crystallisation. As a result, natural rubber also crystallises quite well, especially when subjected to tension. The <strong>Rubber made from natural rubber has very good dynamic properties.<\/strong>, low hysteresis.<\/p>\n<p>However, protein content is not an advantage in all areas: natural rubber-based tyres are not very water-resistant and are not resistant to oils either.<\/p>\n<p>Tyres made from natural rubber have good wear resistance.<\/p>\n<p><em><u>Isoprene rubber<\/u><\/em><\/p>\n<p>Its main chemical component is identical to that of natural rubber, but it does not have such a regular structure, and <strong>does not contain protein<\/strong>. Because of this, it crystallises less, <strong>its dynamic properties are slightly inferior to those of natural rubber<\/strong>. It has low abrasion resistance and poor oil resistance, similar to natural rubber, but better water resistance.<\/p>\n<p><em><u>Butadiene rubber<\/u><\/em><\/p>\n<p>In the structure of butadiene rubber, the interaction between neighbouring macromolecules is weak. This means that rubber made from this raw material <strong>highly flexible, with outstanding dynamic properties and wear resistance<\/strong> will be a product with.<\/p>\n<p><em><u>Butadiene-styrene rubber<\/u><\/em><\/p>\n<p>A copolymer of butadiene and styrene (or methyl styrene), whose properties are essentially determined by the ratio of butadiene to styrene.<\/p>\n<p>Thanks to styrene <strong>high tensile strength and better heat resistance<\/strong> as traditional rubber. As it is relatively inexpensive, it is often used in the tread compound of tyres.<\/p>\n<p><em><u>Butyl rubber<\/u><\/em><\/p>\n<p>Polyisobutylene has a very compact structure, which is why, compared to other types of rubber, it <strong>known for its very low air permeability and good chemical resistance<\/strong>.<\/p>\n<p><em>Chloroprene rubber<\/em><\/p>\n<p>Its main component is polychloroprene. One of its common commercial variants is used as a base material for diving suits. <strong>Neoprene<\/strong>.<\/p>\n<p><em>Ethylene propylene rubber<\/em><\/p>\n<p>Ethylene-propylene rubbers <strong>they can withstand temperatures much higher than most<\/strong>, which is why they are used as a raw material for the manufacture of heat-resistant tyres.<\/p>\n<p>\u00a0<\/p>\n<p>The next and final part of our series of articles will discuss how rubber can be produced from the above types of rubber during vulcanisation.<\/p>\n<p>Image illustrating the Mullins phenomenon <a href=\"http:\/\/doktori.bme.hu\/bme_palyazat\/2017\/Honlap\/Feher_Eszter_hu.htm\">Eszter Feh\u00e9r<\/a> comes from his study.<\/p>\n<p>\u00a0<\/p>","protected":false},"excerpt":{"rendered":"<p>Rubber is not yet rubber, in order to produce rubber by enhancing its beneficial properties, rubber must be vulcanised. Read more<\/p>","protected":false},"author":1,"featured_media":7109,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[144,102],"tags":[180,181],"class_list":["post-7108","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hasznos-tudas","category-hirek-cikkek","tag-gumi","tag-kaucsuk","has-thumb"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v26.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Felhaszn\u00e1lt alapanyagaink: a gumi - A kaucsuk oszt\u00e1lyoz\u00e1sa<\/title>\n<meta name=\"description\" content=\"A kaucsuk m\u00e9g nem gumi, ahhoz, hogy az el\u0151ny\u00f6s tulajdons\u00e1gainak feler\u0151s\u00edt\u00e9s\u00e9vel gumit gy\u00e1rthassanak, a kaucsukot vulkaniz\u00e1lni kell. 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