{"id":3721,"date":"2021-09-01T13:21:04","date_gmt":"2021-09-01T13:21:04","guid":{"rendered":"https:\/\/jaeger-gk.com\/materialauswahl-bei-der-gummiproduktion-welche-komponenten-sind-entscheidend\/"},"modified":"2024-04-16T15:25:54","modified_gmt":"2024-04-16T15:25:54","slug":"material-selection-in-rubber-production-which-components-are-decisive","status":"publish","type":"post","link":"https:\/\/jaeger-gk.com\/en\/blog\/material-selection-in-rubber-production-which-components-are-decisive\/","title":{"rendered":"Material selection in rubber production – Which components are decisive?"},"content":{"rendered":"\t\t
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J\u00c4GER Business Blog<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Material selection in rubber production \u2014 Which components are decisive? <\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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WHITEPAPER<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Secure the Start of Production <\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Find out which factors influence your SOP!<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Rubber is a versatile material that is suitable for a wide range of industrial applications due to its chemical and physical properties. This versatility results, among other things, from the fact that a rubber compound is a complex mixture of several components, each of which can significantly influence the properties of the vulcanizate. Finding the one compound that meets every vulcanizate requirement is often a challenge, because optimizing one factor can negatively affect the others. Therefore, manufacturing companies should not underestimate the complexity of material selection in the rubber sector.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Rubber is not only made of rubber<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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A rubber compound consists of a variety of raw materials and additives that have a significant influence on both the processing and the properties of the final product. In addition to the rubber, these include fillers, plasticizers, the cross-linking system, processing aids and various additives (see Table 1).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Component<\/th>Effect on the properties<\/th>\n<\/tr>\n<\/thead>\n
Rubber<\/td>Basic properties (temperature behavior, chemical resistance, elasticity, \u2026)<\/td>\n<\/tr>\n
Filler<\/td>Hardness, strength, abrasion, electrical conductivity<\/td>\n<\/tr>\n
Plasticizer<\/td>Hardness, workability, elongation at break<\/td>\n<\/tr>\n
Cross-linking system<\/td>Vulcanization speed, dynamic and static behavior<\/td>\n<\/tr>\n
Processing aid<\/td>Flow behavior, demouldability, processing behavior<\/td>\n<\/tr>\n
Additive<\/td>Color, extrudate stability, ageing behavior, electrical conductivity, \u2026<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Table 1: The most important components of a rubber compound and their effect on the properties of the vulcanizate.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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The basic component of every rubber compound is the polymer<\/strong>, the rubber, which determines basic properties such as temperature behavior, chemical resistance<\/a> or elasticity.\u00a0<\/p>

When putting together a rubber compound, the manufacturer has a variety of synthetic rubbers at his disposal in addition to natural rubber, each of which has specific properties. Some rubbers, for example, offer excellent oil resistance, others impress with outstanding mechanical properties, and still others with very high ageing resistance. For most applications, there is a suitable rubber that offers the desired properties.\u00a0<\/p>

Besides rubber, fillers<\/strong> (e.g. carbon black, silicic acid or chalk) make up the largest proportion of a rubber compound. Among other things, they influence the hardness, strength, abrasion and electrical conductivity of the vulcanized rubber. Plasticizers<\/strong> also influence the hardness and workability of the compound, but also the stretchability. Although the cross-linking system<\/strong> makes up only a small part of the rubber compound, it has a great influence on its properties. It primarily controls the speed of vulcanization, but also influences other characteristics such as tear resistance. Processing<\/strong> aids<\/strong> influence the handling of the rubber compound during the production process. These include, for example, tackiness and flow behavior, i.e. how easily the compound can be pressed into a mold. In addition, there are a large number of other additives<\/strong> that influence, among other things, the color, the extrudate stability, the ageing behavior and the electrical conductivity of the rubber compound.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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The selection of the networking system<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The classic crosslinking component for vulcanization is sulfur. However, pure sulfur is not very efficient for crosslinking. Therefore, in practice, accelerators are added to it to activate it and ensure that it is sensibly incorporated into the polymer chain. Depending on the ratio between sulfur and accelerator, a distinction is made between three types of vulcanization:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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