Vulcanization, a chemical process for converting rubber or related polymers into more durable materials via the addition of sulfur or other equivalent "curatives" or "accelerators". and some sulfur-carbon bonds while importantly leaving intact the molecular carbon-carbon backbone created by the vulcanization process.
Process. Vulcanized Rubber: The process is carried out by heating the rubber, mixed with a vulcanizing agent in a mold under pressure. Unvulcanized Rubber: Such a process is not needed. Deformation under a large mechanical stress. Vulcanized rubber: Vulcanized rubber forcibly retracts to its original shape without imposing deformations once the mechanical stress is released. Unvulcanized rubber: Unvulcanized rubber imposes deformation when undergoing large mechanical stresses.
Vulcanization or vulcanisation is a chemical process for converting natural rubber or related polymers into more durable materials via the addition of sulfur or other equivalent curatives or accelerators. These additives modify the polymer by forming cross-links (bridges) between individual polymer chains.
Vulcanized rubber is a natural elastomer that has been made more durable by a biochemical process that cures the rubber. During vulcanization, the milky latex from a rubber tree is combined with a curing ingredient — usually sulfur — and heated under pressure.
a technological process in rubber production in which raw rubber is made into cured rubber. Vulcanization increases the durability, hardness, elasticity, and heat and cold resistance of raw rubber and lowers its degree of swelling and solubility in organic solvents.
vulcanization definition: 1. the process of treating crude rubber with sulfur or its compounds and subjecting it to heat in order to make it nonplastic and increase its strength and elasticity 2. a process somewhat like this, for hardening some other substa...
vulcanization - process of treating rubber or rubberlike materials with sulphur at great heat to improve elasticity and strength or to harden them vulcanisation processing - preparing or putting through a prescribed procedure; "the processing of newly arrived immigrants"; "the processing of ore to obtain minerals"
What is Vulcanization of Rubber – How to vulcanize rubber. The process transforms elastomers with weak thermoplastic properties into a strong, elastic and tough substance with useful properties and introduces a network of cross links into the elastomers. Tensile strength is maximum at optimum cure.
Vulcanization of rubber is a process of improvement of the rubber elasticity and strength by heating it in the presence of sulphur. I touched upon vulcanization in our earlier posts on Autoclave and Rotocure.
Vulcanization of rubber by sulfur alone is an extremely slow process and can take several hours at elevated temperature (140°C or more). This is problematic becasue long exposure to temperature and oxygen leads to oxidative degradation which, in turn, results in poor mechanical properties.
The room temperature process doesn't consume the energy found in a typical vulcanizing process, or use virgin rubber material. Old rubber, better parts: this year, a new material developed in Detroit, its maker says, recycled 18,500 tires, removed five million pounds (cumulative) from seven domestic platforms, and saved one customer $185,000 ...
Vulcanization & Accelerators Vulcanization is a cross linking process in which individual molecules of rubber (polymer) are converted into a three dimensional network of interconnected (polymer) chains through chemical cross links(of sulfur). The vulcanization process was discovered in 1839 and the individuals responsible for this discovery were
Vulcanization (British: vulcanisation) is a chemical process, invented by Charles Goodyear, used to harden rubber. Vulcanization traditionally referred to the treatment of natural rubber with sulfur and this remains the most common example, however the term has also grown to include the hardening of other (synthetic) rubbers via various means.
chemical - vulcanizing - agents are used to create the chemical transverse bonds between rubber macromolecules (such as sulphur, peroxides, metal oxides, resins, quinones and others), which can react with appropriate functional rubber groups in the process of vulcanization to create transverse bonds between them. The cross-
Vulcanization definition: the process of treating crude rubber with sulfur or its compounds and subjecting it to... | Meaning, pronunciation, translations and examples
Vulcanization involves heating rubber in combination with sulfur. The Roman god Vulcan (whose Greek counterpart is Hephaestus) was the god of fire and of skills that used fire, such as metalworking. So when Charles Goodyear discovered that high heat would result in stronger rubber, he called the process "vulcanization" after the god of fire.
Rubber Vulcanization Natural rubber has some serious defects; it is weak, easily becomes sticky and is not very elastic. To improve the physical properties (strength and heat resistance) of the material, it is taken through a vulcanization process, in which the polymeric chains of rubber undergo a crosslinking reaction, initiated by the addition of sulphur to form a stable 3D network .
Vulcanization is a process that involves the use of chemicals to change natural rubber into a stronger, more durable substance. In its natural state, rubber is somewhat elastic and not as strong as it could be.
Vulcanization is a chemical process that converts natural rubber and other polydiene elastomers into cross-linked polymers. The most common vulcanization agent is sulfur. It forms bridges between individual polymer molecules when heated with rubber. Often a catalyst and initiator is added to accelerate the vulcanization process.
'Natural rubbers, before vulcanization, tend to be sticky and soft at high temperatures, while at low temperatures they are brittle and stiff, making them difficult to process.' 'Aniline is used in the manufacture of a number of products including dyes, pharmaceuticals, antioxidants, and vulcanization accelerators in rubber compounds.'
Process. The cross-linking is achieved by the addition of sulfur. The main polymers subjected to vulcanization are polyisoprene (natural rubber) and styrene-butadiene rubber (SBR), which are used for most street-vehicle tires. The cure package is adjusted specifically for the substrate and the application.
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Vulcanization is a chemical process in which the rubber is heated with sulphur, accelerator and activator at 140–160°C. The process involves the formation of cross-links between long rubber molecules so as to achieve improved elasticity, resilience, tensile strength, viscosity, hardness and weather resistance.
Vulcanization, chemical process by which the physical properties of natural or synthetic rubber are improved; finished rubber has higher tensile strength and resistance to swelling and abrasion, and is elastic over a greater range of temperatures.
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