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Method for preparing modified graphene/silica/styrene-butadiene rubber composite material

A technology of styrene-butadiene rubber and composite materials, which is applied in the field of preparation of graphene/white carbon black/styrene-butadiene rubber composite materials. Tear performance, effect of improving dispersion and uniformity

Inactive Publication Date: 2019-07-02
BEIJING RES & DESIGN INST OF RUBBER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphene has high chemical stability and weak interaction with other media, but due to the single-layer structure of graphene, it has an ultra-high specific surface area, so curling and agglomeration are very easy to occur (atomic interactions between sheets become curls). , the interaction between sheets and sheets produces agglomeration), which makes it difficult for graphene to disperse evenly when filling other substances, which greatly limits the further application of graphene in the field of rubber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add 1 part of graphene, 4 parts of kaolin, 30 parts of white carbon black, 100 parts by mass ratio of water, 0.1 g of sodium dodecylbenzenesulfonate as a dispersant, and stir at high speed for 30 minutes to prepare a uniformly dispersed slurry into the reactor. ; Take 100 parts of the mixed slurry and add it to the mixed emulsion mixed with 5 parts of natural rubber latex and 100 parts of styrene-butadiene latex (solid content 25%), mix under high-speed stirring, coagulate with acid, wash and dry to obtain modified graphite ene / silica / styrene-butadiene rubber composite material; get 100 parts of composite material, 50 parts of carbon black, 5 parts of zinc oxide, 3 parts of stearic acid, 2 parts of sulfur, 1 part of accelerator NS and mix on the open mill; Carry out vulcanization on the flat vulcanizer, vulcanization temperature 150 ℃. The physical and mechanical properties of the raw rubber are shown in Table 1.

Embodiment 2

[0015] Add 2 parts of graphene, 4 parts of kaolin, 30 parts of white carbon black, 100 parts by mass ratio of water, 0.1 g of sodium dodecylbenzenesulfonate as a dispersant, and stir at high speed for 30 minutes to prepare a uniformly dispersed slurry into the reactor. ; Take 100 parts of the mixed slurry and add it to the mixed emulsion mixed with 5 parts of natural rubber latex and 100 parts of styrene-butadiene latex (solid content 25%), mix under high-speed stirring, coagulate with acid, wash and dry to obtain modified graphite olefin / silica / styrene-butadiene rubber composite material; take 100 parts of composite material, 50 parts of carbon black, 5 parts of zinc oxide, 3 parts of stearic acid, 2 parts of sulfur, 1 part of accelerator NS, and knead on an open mill ; Vulcanize on a flat vulcanizer at a vulcanization temperature of 150°C. The physical and mechanical properties of the raw rubber are shown in Table 1.

Embodiment 3

[0017] Add 3 parts of graphene, 4 parts of kaolin, 30 parts of white carbon black, 100 parts by mass ratio of water, 0.1 g of sodium dodecylbenzenesulfonate as a dispersant, and stir at high speed for 30 minutes to prepare a uniformly dispersed slurry into the reactor. ; Take 100 parts of the mixed slurry and add it to the mixed emulsion mixed with 5 parts of natural rubber latex and 100 parts of styrene-butadiene latex (solid content 25%), mix under high-speed stirring, coagulate with acid, wash and dry to obtain modified graphite ene / silica / styrene-butadiene rubber composite material; get 100 parts of composite material, 50 parts of carbon black, 5 parts of zinc oxide, 3 parts of stearic acid, 2 parts of sulfur, 1 part of accelerator NS and mix on the open mill; Carry out vulcanization on the flat vulcanizer, vulcanization temperature 150 ℃. The physical and mechanical properties of the raw rubber are shown in Table 1.

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Abstract

The invention relates to a method for preparing modified graphene / silica-containing styrene-butadiene rubber composite material, which is a rubber composite material prepared by emulsion blend and co-coagulation. In the present invention, raw materials of the composite material comprise graphene, a layered silicate and silica with a mass ratio of (1-5):(1-10):(1-70), a liquid modifier accounts for0.1-5% of the mass of the dry rubber of rubber, a dispersant accounts for 0.01-0.5% of the mass of the dry material of a filler. Based on 1-70 parts of the filler, slurry is added to a styrene-butadiene latex solution containing the liquid modifier with a dry rubber content of 100 parts, high-speed stirring is carried out, then acid solidifying, washing and drying are carried out, so that the modified rubber composite material is obtained. The prepared modified graphene / silica / styrene-butadiene rubber composite material has low Mooney viscosity and heat generation, high modulus, tear resistance, low rolling resistance, and good wear resistance. The method is simple and easy to operate, low in cost and easy to industrialize, and has good economic and social benefits.

Description

technical field [0001] The present application relates to the technical field of modified styrene-butadiene rubber composite materials, and more specifically relates to a preparation method of graphene / white carbon black / styrene-butadiene rubber composite materials. Background technique [0002] Graphene is a hexagonal lattice planar film composed of carbon atoms in sp2 hybrid orbitals, a two-dimensional material with a thickness of only one or more carbon atoms. Graphene has excellent mechanical, thermal, and electrical properties, and is currently one of the most attractive inorganic nanomaterials. It is the latest, most researched, and best-performing two-dimensional carbon nanomaterial. Graphene is used in tire preparation, applied to tire tread, base rubber, sidewall, tire shoulder, apex rubber, belt layer rubber, carcass rubber, transition layer rubber, inner liner rubber, etc., which can effectively solve the existing problems There are phenomena such as poor tire qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/08C08L7/02C08K13/06C08K9/04C08K3/04C08K7/00C08K3/36C08K5/09C08K3/22
CPCC08L9/08C08K2003/2296C08K2201/006C08L7/02C08K13/06C08K9/04C08K3/04C08K7/00C08K3/36C08K5/09C08K3/22
Inventor 陆铭李花婷王永伟李岩磊陈宏
Owner BEIJING RES & DESIGN INST OF RUBBER IND
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