Compounding is a key process in the production of rubber products, and the quality of compounding rubber directly affects the performance and life of the finished product when using recycled rubber as the main raw material to produce rubber products. In the preparation of recycled rubber compounds, the rational use of rubber oil can increase the plasticity of the compound, reduce the hardness of the compound, improve the processing performance, and provide a good foundation for subsequent molding operations. In actual production, what rubber oil will be used in recycled rubber compounds? How to choose the right rubber oil? What oil is used in recycled rubber compounds? This is directly related to the variety of recycled rubber, as well as the color and performance requirements of the compound.
The commonly used oils of recycled rubber compounds are mainly divided into the following types: petroleum-based rubber oil (paraffin-based, naphthenic group, aromatic hydrocarbon-based, etc.), coal tar-based rubber oil (coal tar, coumarone, coal asphalt, etc.), pine oil-based plasticizers (pine tar, rosin, rosin oil, tall oil, etc.), etc.
1. Aromatic oil
Aromatic oil is a kind of rubber softener commonly used in recycled rubber compounds, relatively cheap, with good low-temperature performance, good compatibility with recycled rubber, can significantly improve the processing process performance of recycled rubber, increase the viscosity and plasticity of recycled rubber compounds E5LYY723 improve the compounding effect, have a certain degree of pollution, and are suitable for the preparation of compound rubber for dark rubber products with high requirements for tensile strength, tear strength and other physical and mechanical properties.
2. Naphthenic oil
The chemical structure of naphthenic oil has a certain similarity with rubber, good compatibility with recycled rubber, good processing and operation performance, high flash point, belongs to non-polluting rubber oil, and is stable to light and heat. It has good aging resistance and antioxidant properties, can extend the service life of rubber products, and is suitable for manufacturing recycled rubber compounds with high aging resistance requirements.
3. Paraffin oil
Paraffin oil has stable chemical properties, low pollution, good cold resistance, can endow recycled rubber compounds with good weather resistance and ozone resistance, make the surface of rubber products smooth, and is suitable for the preparation of recycled rubber compounds with high requirements for color stability.
4. Coal tar rubber oil
Including coal tar, coumallon, coal asphalt, etc. Gumaron resin has good viscosity and softening effects, but it should be noted that it may have an impact on the color of the compound, and is mostly used in the preparation of dark recycled rubber compounds.
5. Pine oil is rubber oil
Including pine tar, rosin, rosin oil, tall oil, etc. Pine tar is a general-purpose plasticizer, which can promote the dispersion of compounds, increase the viscosity and cold resistance of adhesives, and is not suitable for the preparation of light-colored recycled rubber compounds. Rosin oil contains organic acid groups that improve adhesion and slow down vulcanization.
There are many varieties of recycled rubber on the market, latex recycled rubber, tire recycled rubber, butyl recycled rubber, EPDM recycled rubber, nitrile recycled rubber, isoprene recycled rubber, etc., different varieties of rubber oil and recycled rubber compatibility are different, light-colored recycled rubber compound rubber when choosing rubber oil also need to pay attention to the impact of rubber oil on the appearance of the product, the later editor will continue to share with you different varieties of recycled rubber compound commonly used rubber oil selection skills.
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