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Graphene-CBS composite pre-dispersed rubber master batch and preparation method for same

A technology of pre-dispersed masterbatch and graphene, applied in the field of graphene-CBS composite pre-dispersed masterbatch and its preparation, to achieve the effects of improved dispersibility, easy storage and smooth surface

Inactive Publication Date: 2017-09-15
NINGBO ACTMIX POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a graphene-CBS composite pre-dispersed masterbatch and its preparation method in view of the deficiencies in the prior art. The pre-dispersed masterbatch contains two active components of graphene and CBS , can effectively solve the dispersion of graphene and CBS in vulcanized rubber products and the problem of dust pollution. When used in the production of vulcanized rubber, it can promote the vulcanization of rubber and improve the mechanical properties and aging properties of rubber

Method used

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  • Graphene-CBS composite pre-dispersed rubber master batch and preparation method for same

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Embodiment 1

[0025] The graphene pre-dispersed masterbatch of embodiment one, by weight, its percentage by weight consists of: graphene 40%, N-cyclohexyl-2-benzothiazole sulfenamide 30%, two-[γ- (triethoxysilane) propyl]-tetrasulfide 4%, EPDM rubber 9%, EVA resin 5%, triethanolamine 1%, wetting agent (saturated fatty acid) 2%, softener 9%, The softener is prepared from paraffin oil and aromatic oil in a weight ratio of 1:3. The preparation method of the pre-dispersed masterbatch comprises the following steps:

[0026] (1) Accurately weigh the raw materials required for the preparation of masterbatch according to the proportion;

[0027] (2) Divide the EVA resin into two parts; then put the EPDM rubber into the internal mixer and knead for 4 minutes; then add 1 / 2 of the EVA resin to the internal mixer and knead for 5 minutes; Then add 1 / 2 EVA resin to the internal mixer, mix until the temperature in the internal mixer rises to 85°C, remove the glue, and obtain the base rubber, and pass the...

Embodiment 2

[0031] The graphene predispersed master batch of embodiment two, by weight, its percentage by weight consists of: graphene 45%, N-cyclohexyl-2-benzothiazole sulfenamide 25%, two-[γ- (triethoxysilane) propyl]-tetrasulfide 3%, EPDM rubber 11%, EVA resin 4%, triethanolamine 1%, wetting agent (fatty acid soap) 3%, softener 8%, The softener is prepared from paraffin oil and aromatic oil at a weight ratio of 1:2. The preparation method of the pre-dispersed masterbatch comprises the following steps:

[0032] (1) Accurately weigh the raw materials required for the preparation of masterbatch according to the proportion;

[0033] (2) Divide the EVA resin into two parts; then put the EPDM rubber into the internal mixer and knead for 3 minutes; then add 1 / 2 of the EVA resin to the internal mixer and knead for 4 minutes; Then add 1 / 2 EVA resin to the internal mixer, mix until the temperature in the internal mixer rises to 85°C, discharge the glue, and obtain the base rubber, and pass the ba...

Embodiment 3

[0036] The graphene pre-dispersed masterbatch of embodiment three, by weight, its percentage by weight consists of: graphene 35%, N-cyclohexyl-2-benzothiazole sulfenamide 28%, two-[γ- (triethoxysilane) propyl]-tetrasulfide 6%, EPDM rubber 13%, EVA resin 3%, triethanolamine 3%, wetting agent (polyol ester) 2%, softener 10% , the softening agent is formulated with paraffin oil and aromatic hydrocarbon oil with a weight ratio of 2:5, and the preparation method of the pre-dispersed masterbatch comprises the following steps:

[0037] (1) Accurately weigh the raw materials required for the preparation of masterbatch according to the proportion;

[0038] (2) Divide the EVA resin into two parts; then put the EPDM rubber into the internal mixer and knead for 5 minutes; then add 1 / 2 of the EVA resin to the internal mixer and knead for 6 minutes; Then add 1 / 2 EVA resin to the internal mixer, mix until the temperature in the internal mixer rises to 85°C, discharge the glue, and obtain th...

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Abstract

The invention discloses a graphene-CBS composite pre-dispersed rubber master batch which includes, by weight, 35-45% of graphene, 20-40% of N-cyclohexyl-2-benzothiazolesulfenamide, 3-8% of bis-[gamma-(triethoxylsilicon)propyl]-tetrasulfide, 7-15% of ethylene propylene diene monomer, 3-5% of EVA resin, 1-3% of triethanolamine, 1-4% of a wetting agent and 8-13% of a softening agent. The rubber master batch contains two active components graphene and CBS, and can solve the problems of dispersibility of graphene and CBS and dust pollution in rubber products. When being used for producing vulcanized rubber in subsequent steps, the rubber master batch can promote vulcanization of rubber and improve mechanical performance and aging resistance of rubber, and especially can increase yield and production efficiency of a vulcanized rubber extruded product. The preparation method of the rubber master batch has excellent operability. The graphene-CBS composite pre-dispersed rubber master batch has low Mooney viscosity and maintains the original activities of the graphene and CBS, so that the graphene and CBS are uniformly dispersed in the rubber master batch.

Description

technical field [0001] The invention relates to the technical field of pre-dispersion and granulation of rubber additives, in particular to a graphene-CBS 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. At present, graphene is the thinnest but hardest nanomaterial in the world. It is almost completely transparent and only absorbs 2.3% of light; its thermal conductivity reaches 5300 W / m K, much higher than that of diamond and carbon nanotubes; at room temperature , with an electron mobility of 15000 cm 2 / V·s, much higher than that of carbon nanotubes and silicon crystals; its resistivity is about 10 -6 Ω·cm, excellent conductivity, comparable to some metals; it has a high specific surface area, the limit value can reach 2630 m 2 / g. Due to the unique characteristics...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/08C08L91/06C08L91/00C08K13/04C08K7/00C08K3/04C08K5/47C08K5/17C08K5/09
CPCC08L23/16C08L2201/08C08L2205/02C08L2205/035C08L23/0853C08L91/06C08L91/00C08K13/04C08K7/00C08K3/04C08K5/47C08K5/17C08K5/09
Inventor 连千荣谷建鹏赵永青
Owner NINGBO ACTMIX POLYMER
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