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Basic process
Basic process
Time: the 2011-6-16 print this paper
With modern industry especially the rapid development of chemical industry, rubber products variety, but its production process, but the same basic. With general solid rubber (raw rubber) as raw material goods, its production process mainly include:
Raw materials and refining and ready to mixed refine and molding-vulcanization and rest-inspection
2. Raw material preparation
The main material of rubber products have glue and cooperate with the agent, fiber materials and metal materials. Among them is the basic raw rubber materials; Cooperate with agent is to improve the rubber products some performance and join the supplementary material; Fiber materials (cotton, linen, wool and various kinds of man-made fiber, synthetic fiber) and metal materials (steel wire, wire) is as rubber products skeleton material, in order to strengthen the mechanical strength, restrict products variant.
In the raw materials preparation process, ingredients must, in accordance with the formula to weigh the accurate. In order to make raw rubber and mixing agent can cooperate with each other, the need for some materials for machining: content from drove past some rubber estate
Raw rubber in 60-70 ℃ to HongFang baked in soft, then slice glue, gel breaking into small pieces;
Massive chelating agent such as paraffin wax, stearic acid, rosin, etc to pieces;
Powder chelating agent if contain mechanical impurities or coarse grain to remove when screening;
Liquid chelating agent (pine tar, ancient Malone) to be heated, melt, evaporation moisture, filtering impurities;
Dry out chelating agent, or easy to agglomerate, when mixed refine old can't scatter even, when sulfide have bubbles, which affect product quality.
3. Refining
Rubber was full of flexibility, lack the necessary process performance (plasticity), so do not facilitate processing. In order to improve its plasticity, so want to be opposite glue for refining; So, in the mixed refine chelating agent is easy when equably dispersed in raw rubber; At the same time, in the calender, molding process also help improve the permeability of the melt (infiltration fiber fabrics inside) and forming liquidity. Will the rubber was long chain molecules degradation, form the plasticity of process called refining. Raw rubber refining methods have a mechanical refining and thermal refining two kinds. Mechanical refining is not too high in the temperature, through the refining machine mechanical extrusion and friction in the role of the long chain rubber molecules degradation are short, by the high elastic state transition for plastic state. Thermal refining is the raw rubber tube.as the scorching compressed air in under the action of heat and oxygen, make the long chain molecules shorter degradation, and obtain plasticity.

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