Montmorillonite-styrene butadiene rubber nanocomposite material

Abstract

The invention discloses a montmorillonite-styrene butadiene rubber nanocomposite material. The montmorillonite-styrene butadiene rubber nanocomposite material is a composition of macromolecular compounds. The montmorillonite-styrene butadiene rubber nanocomposite material comprises: by weight, 416 parts of butadiene-styrene emulsion having solid content of 24%, 10 to 120 parts of organic modifiedmontmorillonite fluid suspension, 1 to 8 parts of adhesive emulsion, 0.2 to 20 parts of a coupling agent, 0.2 to 2 parts of an antioxidant, 1.5 to 8 parts of a flocculating agent, 2000 to 5000 parts of an inorganic salt-flocculating agent aqueous solution, an appropriate amount of an inorganic acid and an appropriate amount of an inorganic base. A preparation method of the montmorillonite-styrenebutadiene rubber nanocomposite material comprises thr following steps of 1, carrying out preprocessing of a part of the raw materials, 2, carrying out premixing of a part of the raw materials, 3, carrying out preliminary flocculation, 4, adding adhesive emulsion into flocculates obtained by the step 3, and 5, carrying out secondary flocculation. The montmorillonite-styrene butadiene rubber nanocomposite material and the preparation method thereof have the advantages that flocculated styrene butadiene rubber particle sizes are large; a montmorillonite reinforcement effect is improved obviously; vulcanizate wear resistance is improved several times; an original styrene butadiene rubber polymerization technology is not changed but processes and a formula are improved simply; and continuous industrialized production is realized.

Description

technical field [0001] The invention relates to a nano composite material of montmorillonite and styrene-butadiene rubber and a preparation method thereof. The invention belongs to a polymer compound composition, relates to a styrene-butadiene rubber composition, in particular to a nanocomposite material of organically modified montmorillonite suspension and styrene-butadiene rubber emulsion and a preparation method thereof. Background technique [0002] As we all know, the biggest disadvantage of rubber is its low strength, and reinforcing agents must be added to have practical value. For more than 100 years, people have been using carbon black as a reinforcing agent, but in addition to serious pollution, the source of carbon black also depends on petroleum energy materials, and the price is expensive. [0003] Montmorillonite is not only rich in sources, but also cheap and non-polluting. It is expected to become a substitute for traditional carbon black and white carbon b...

AI Technical Summary

Problems solved by technology

However, practice has shown that the rubber particles in the coagulation of the above three methods are too small, and the cohesion between the particles is poor, so it is difficult to adapt to the subsequent extrusion dehydration and blast drying process of the current industrial production of styrene-butadiene rubber. The problem that it is difficult to realize continuous industrial production needs to be solved

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