Rubber additives pre-dispersion has been proposed in the last century in the 1940s, to the 80s only began to have industrial production, the mid-1990s began to mass industrial production, to 2003 and then slowly recognized, there were only a few foreign-funded factories in the country, until 2008 after the domestic factories began to be mounted one after another and gradually increased.
First, the characteristics of rubber additives pre-dispersion
Rubber additives are chemicals that bring higher added value to rubber products and can reduce costs. However, the traditional rubber additives not only produce a lot of dust and toxic gases when used, which bring great harm to the environment and the health of the operators, but also have poor compatibility with the rubber, difficult to disperse uniformly, which affects the use of its effect.
Second, rubber additives pre-dispersion definition
Pre-dispersion of rubber additives, also known as rubber additives masterbatch. Pre-dispersed rubber additives is a polymer (generally EPDM, SBR, NBR, EVA) as a carrier, plus rubber additives and softeners, through a special process of traditional rubber additives pre-dispersed into the polymer, to obtain a certain concentration of homogeneous pre-dispersed body (extrusion granulation).
Third, what are the advantages of rubber additives pre-dispersion?
1, environmental protection. Avoid workshop dust pollution, protect workers' health.
2, better dispersion, uniform.
3, good compatibility with rubber material, can save mixing time.
4、Easy to weigh, suitable for automated continuous, easy transportation and storage.
5、No loss during processing, so that the quality is stable between batches.
6、Good development prospects. Pre-dispersed rubber additive masterbatch is mainly used in China for higher quality precision products, such as high and middle grade rubber shoes, automobile rubber products and high quality rubber pipe fittings.
Four, rubber additives pre-dispersed main components
1, rubber additives: pre-dispersed rubber additives is the main material, its quality directly affects the quality of pre-dispersed rubber additives, generally 40% -80% of the content.
2, carrier: carrier selection of pre-dispersed rubber additives mother pellet / mother film production is very important, should pay attention to the solubility of rubber additives in the carrier and the carrier and rubber compatibility.
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