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Rubber blending of purpose and meaning

improve performance of rubber and/or processing property

rubber blend on the main objective is to improve the performance of existing rubber shortage. For example, natural rubber, because of its good mechanical properties and processability, applications are widely used, but its resistance to ageing, ozone ageing resistance, oil resistance and chemical resistance of the poor. Poor majority synthetic rubber processing properties, mechanical properties is not ideal, often makes it difficult to produce, synthetic rubber and natural rubber mix used, complement each other,

in particular improves the Machinability of z of synthetic rubber products. Parts of a tire compound widely used in NR, SBR, BR, etc and use, and used 90/10 CR./NR blend to make a v-shaped belt, not only improves CR NR in the mixing and rolling sticking phenomena, and improved low temperature resistance of tape. Among synthetic rubber mix used, the same role to improve performance. As with single IIR tyre inner tubes, tightness is good, but use long carcass appears soft, sticky tires and tubes size larger defects, IIR and few EPDM Chan mixed use, you can overcome these shortcomings, thanks to thermal aging occurs after the EPDM rubber with crosslinked structure changes. Small amounts of EPDM rubber can increase the amount of carbon black and softening oil, also tube semi-finished products of improving extrusion surface smoothness and your product can rate.

General or special synthetic rubber and special blends of synthetic rubber and use, it can effectively keep the rubber m performance, can effectively reduce production costs, improve the utilization of the special rubber. Such as Viton and blends of acrylate rubber, silicone and EPDM blends, Viton and NBR ^ mix.

rubber and synthetic resin blend is another important way to realize rubber modified. Synthetic resin in the performance advantage of t is a high strength, excellent heat aging resistance and resistance to chemical attack, these just some synthetic rubber lack and need. Rubber blended with small amounts of synthetic resins, improve fertility since some of the rubber, which can enhance the value of rafters glue, broaden their field of application. ^ Are the earliest examples of the most successful in this regard is the NBR and PVC blends, blend now widely used in the production of oil products, chemical resistance, ozone resistance. Other some General of poly olefin resin, as poly b poly (PE), and polypropylene (PP), and polystyrene (PS), and high styrene (HSR),, has was widely with * with NR, and BR, and SBR, and IIR, EPDM, total mixed, they except can on these rubber produced fill strong role yiwai, also can improved resistance aging, and resistance solvent, and resistance oil, performance. Also can improve the processing properties of rubber, such as semi-finished rolled out velocity, reduce the rate of your product can, improve roughness, and so on. PE resins of low molecular weight (relative molecular mass of 500-5000) has been used as a special additives for improving processing performance. Some blends of synthetic resins and rubber also had unexpected results, such as high density polyethylene (HDFE) blending with SBR, can significantly improve the resistance to repeated bending fatigue property of SBR. 2. preparation of thermoplastic elastomers (TPE) new ways.

rubber and synthetic resin blends, not only meet the needs of the synthetic rubber products modified, also successfully developed TPE prepared by mechanical blending dynamic vulcanization of new technologies, the emergence of this technology, means that the rubber modification Jiao made a great progress. Use this method to produce a variety of half-and fully crosslinked TPE, TPE rubber products have become a major source of raw materials.

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