Rubber oil is one of the processing aids that must be used in the processing of rubber products. It has a great influence on the processing properties of rubber compounds and the physical properties of finished rubber products. Therefore, the correct choice of rubber oil is equally important for the processing of rubber products. Many rubber product manufacturers will first observe the viscosity of the oil when selecting the rubber oil. Is the higher the viscosity of the rubber oil, the better? What are the factors related to the viscosity of rubber oil?
Under normal circumstances, the higher the kinematic viscosity of the rubber oil, the more viscous the rubber oil, the viscosity is a measure of whether or not the rubber oil and the rubber are suitable to adapt to a rough standard, but also can determine the flow properties of the rubber oil. The inherent viscosity of the rubber oil affects the physical polarity properties of the rubber product during the processing of the rubber product, and can also affect the low temperature property and volatility of the rubber material.
1, the same kind of rubber oil with different viscosity: Under normal circumstances, the same type of low viscosity rubber oil such as aromatic hydrocarbon oil will give rubber vulcanized rubber lower hardness and good low temperature flexibility; high viscosity of aromatic hydrocarbon oil can improve rubber vulcanization The tensile strength of rubber, elongation at break; but in the actual use of low viscosity rubber oil volatile during processing, high viscosity rubber oil in the production of rubber products will lead to rubber vulcanizate tensile stress , cold resistance and elasticity have decreased. The viscosity of the rubber oil is related to the heat generation of the rubber material. In general, rubber products produced from high-viscosity rubber oil have higher heat generation.
2. Different kinds of rubber oils have the same viscosity: The rubber oils in the processing of rubber products can be divided in paraffinic oils, naphthenic oils and aromatic oils according to their molecular structure and components. Different types of rubber oils are aromatic at the same viscosity. Oil-like heat is low. The same viscosity of different types of rubber oil is added in the same volume. The aromatic oil can increase the elongation at break of the rubber vulcanizate more than the saturated oil.
In general, the tensile strength and the elongation at break of a rubber product increase as the viscosity of the rubber oil increases, and the flex resistance is improved, but at the same time, the hardness and the set stress of the rubber vulcanizate become smaller. Product manufacturers in the choice of rubber oil should be comprehensive consideration of the type of rubber oil, viscosity of rubber vulcanizate performance, select the most suitable rubber oil products.
Exclusive original article [commercial authorization] reprint, excerpt and excerpt in any form are prohibited without written authorization. Focus on Hongyun rubber: learn the process formula and raw material technology of producing rubber products from recycled rubber to help you reduce costs and increase profits