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...

Examples

Embodiment 1

[0063] Prepare montmorillonite and styrene-butadiene rubber nanocomposite of the present invention according to the following raw material formula and steps

[0064] a. Preprocessing of some raw materials

[0065] (1) Preparation of organically modified montmorillonite suspension

[0066] ① Preparation of montmorillonite aqueous suspension

[0067] Add water and stir the montmorillonite ore, pass through a 100-mesh sieve to remove impurities, settle again to remove sand, and pass through a 325-mesh sieve to obtain a montmorillonite water suspension. The ion exchange capacity of the montmorillonite is 96.4meq / 100g for subsequent use;

[0068] ②. Preparation of intercalation agent solution

[0069] Add 0.18 parts by weight of dodecylamine to 100 parts by weight of hydrochloric acid solution with a concentration of 0.01 mol, dissolve and disperse completely at a temperature of 60°C, and set aside;

[0070] ③. Preparation of organically modified montmorillonite suspension

[0...

Embodiment 2

[0083] According to the method and steps of Example 1, the only difference is that the organically modified montmorillonite suspension prepared in step a (1) added in step b and step e is 20 parts by weight. The montmorillonite and styrene-butadiene rubber nanocomposite material of the present invention is prepared.

Embodiment 3

[0085] According to the method and steps of Example 1, the only difference is that the organically modified montmorillonite suspension prepared in step a (1) added in step b and step e is 40 parts by weight. The montmorillonite and styrene-butadiene rubber nanocomposite material of the present invention is prepared.

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...

Examples

Embodiment 1

[0063] Prepare montmorillonite and styrene-butadiene rubber nanocomposite of the present invention according to the following raw material formula and steps

[0064] a. Preprocessing of some raw materials

[0065] (1) Preparation of organically modified montmorillonite suspension

[0066] ① Preparation of montmorillonite aqueous suspension

[0067] Add water and stir the montmorillonite ore, pass through a 100-mesh sieve to remove impurities, settle again to remove sand, and pass through a 325-mesh sieve to obtain a montmorillonite water suspension. The ion exchange capacity of the montmorillonite is 96.4meq / 100g for subsequent use;

[0068] ②. Preparation of intercalation agent solution

[0069] Add 0.18 parts by weight of dodecylamine to 100 parts by weight of hydrochloric acid solution with a concentration of 0.01 mol, dissolve and disperse completely at a temperature of 60°C, and set aside;

[0070] ③. Preparation of organically modified montmorillonite suspension

[0...

Embodiment 2

[0083] According to the method and steps of Example 1, the only difference is that the organically modified montmorillonite suspension prepared in step a (1) added in step b and step e is 20 parts by weight. The montmorillonite and styrene-butadiene rubber nanocomposite material of the present invention is prepared.

Embodiment 3

[0085] According to the method and steps of Example 1, the only difference is that the organically modified montmorillonite suspension prepared in step a (1) added in step b and step e is 40 parts by weight. The montmorillonite and styrene-butadiene rubber nanocomposite material of the present invention is prepared.

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