Graphene-ZDTP (zinc dialkyl dithiophosphate) compound pre-dispersed rubber master batches and preparation method thereof

Abstract

The invention discloses a graphene-ZDTP composite pre-dispersed masterbatch, which is composed of 45-52% by weight of graphene, 20-40% of zinc dialkyl dithiophosphate, γ-aminopropyl triethyl Oxysilane 2-5%, stearic acid 1-5%, fatty acid soap 1-3%, inorganic filler 3-15%, rubber matrix 8-15%, naphthenic oil 5-15%, the weight percentage of the above composition The sum is 100%; the masterbatch contains two active ingredients, graphene and N-cyclohexyl-2-benzothiazole sulfenamide (ie ZDTP), which have a synergistic effect. When used in the subsequent production of vulcanized rubber, It can promote the vulcanization of rubber, improve the tensile strength, tear strength, abrasion resistance and aging performance of rubber; the masterbatch particles prepared by the method of the present invention have lower Mooney viscosity, and can retain the original activity of graphene and ZDTP , so that graphene and ZDTP are uniformly dispersed in the masterbatch.

Description

technical field [0001] The invention relates to the technical field of pre-dispersion and granulation of rubber additives, in particular to a graphene-ZDTP composite pre-dispersion masterbatch and a preparation method thereof. Background technique [0002] Graphene is a new type of carbon material in which carbon atoms are closely packed in a two-dimensional plane to form a two-dimensional honeycomb lattice. Graphene is currently the thinnest but hardest nanomaterial in the world. It is almost completely transparent and only absorbs 2.3% of light; its thermal conductivity is 5300W / m K, much higher than that of diamond and carbon nanotubes; at room temperature, Its electron mobility reaches 15000cm 2 / V·s, much higher than that of carbon nanotubes and silicon crystals; its resistivity is about 10 -6 Ω·cm, excellent electrical conductivity, equivalent to some metals; it has a high specific surface area, the limit value can reach 2630m 2 / g. Due to the unique characteristic...

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Problems solved by technology

ZDTP is a colorless to light yellow liquid, generally needs to be sealed and stored in iron drums, which is inconvenient to transport and use

Sometimes manufacturers will mix about 70% of ZDTP with about 30% of silica powder to obtain white powder, which is convenient for storage in plastic film bags and cartons, and at the same time brings dust problems. During production, packaging and use The flying dust will bring hidden dangers to the health of operators, and will pollute the workshop environment while causing material loss

In addition, there is a problem of uneven dispersion of ZDTP in the rubber compound

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