Rubber processing technology:
The processing technology of rubber has certain requirements on the plasticity of raw rubber. In order to achieve technical properties, the raw rubber must be masticated. But most synthetic rubbers control the initial plasticity of the green rubber during synthesis. In addition, natural rubber eccentric reducers, hard butadiene rubber reducers, isoprene rubber reducers, styrene-butadiene rubber reducers, etc. all require proper plasticization. Plasticizing can reduce the drillability of the rubber, making the rubber compound easier to mix, plasticizing can improve the rheological properties of the eccentric reducer joint, reduce the expansion and contraction of the mouth, and the eccentric reducer rubber compensation joint can also improve the solubility and molding. Drilling capability rubber.
Plasticization of eccentric reducer rubber joints: The plasticization of eccentric reducer joints must be moderate. Excessive plasticization of eccentric reducer joints will reduce the strength, elasticity, wear resistance and anti-aging properties of vulcanized rubber. The plasticity of the eccentric reducer is mainly based on the technical performance of the compounded rubber and the performance requirements of the product. Eccentric reducer joint mastication is generally carried out on an open rubber mixing machine, and can also be carried out on a closed rubber mixing machine. The practical rubber formula of raw rubber and the dosage of various additives are accurately weighed. The mixing process of the eccentric reducer on the rubber mixer is called mixing. Mixing of eccentric reducers is not only a simple mechanical mixing process of raw rubber and complexing agent, but also a physical and chemical process in which each component penetrates each other, dispersing, adsorbing and combining to form a colloidal dispersion with a complex network structure. The above is a rubber modification process.
Production method of eccentric reducer rubber joint: The production of eccentric reducer rubber joint is still dominated by molding production. In order to improve production efficiency and product quality and reduce waste, semi-finished products need to be prefabricated. The traditional eccentric reducer rubber joint plate vulcanized semi-finished product is. Qualified eccentric reducer rubber joint compound is fully refined and then pressed into thin film. For large batches or large-scale products, the extruder can extrude rubber ropes according to the required specifications, and cut into a certain length of rubber joints with different diameters and different diameters. In recent years, many domestic manufacturers have used precision preforming machines to produce semi-finished products such as O-rings.
During the whole process of rubber processing, the quality of the rubber compound has a decisive influence on the further processing of the rubber and the properties of the final product. If the mixing is not good, the rubber will have uneven dispersion, plastic fluctuations, and even scorching and frosting, which will cause the performance of the vulcanizate and products to decline. The mixing of the eccentric reducer rubber joint can be carried out on a mill or an internal mixer. For small specifications, small batches, and frequent varieties of rubber materials, use a mixer. In addition, the mixer is especially suitable for some special rubbers, such as gelatin sponge, hard rubber eye and butyl rubber, and the atmosphere of the adhesive, such as the compound rubber mixer, the mixing operation is safe, the dust phenomenon is obviously improved, and the eccentric diameter is reduced. The rubber joint mixing process is mechanized, reducing labor intensity, mixing time, and improving production efficiency. The rubber compound mixed with the eccentric reducer rubber joint of the internal mixer must be stored for 4-8 hours before adding accelerators and vulcanizing agents to the smelting machine for processing.
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