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Novel preparation method of rubber-clay nanocomposite

A nano-composite material and rubber technology, which is applied in the new preparation field of rubber and clay nano-composite materials, can solve problems such as poor strengthening ability, and achieve the effects of protecting the environment, simplifying the processing technology, improving the microscopic phase structure and mechanical properties

Active Publication Date: 2011-09-14
TAIYUAN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Inorganic clays such as natural montmorillonite have poor reinforcement as fillers and can only be used in traditional microcomposites

Method used

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  • Novel preparation method of rubber-clay nanocomposite
  • Novel preparation method of rubber-clay nanocomposite
  • Novel preparation method of rubber-clay nanocomposite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058]Prepare mud liquid according to the ratio of inorganic clay and deionized water as 1g:10ml, raise the temperature to 65°C in a water bath, and adjust the mud liquid to PH=7, according to the quality of cetyltrimethylammonium bromide and the quality of inorganic clay Cetyltrimethylammonium bromide is configured into a solution at a ratio of 1:3, and is added dropwise to the mud liquid under strong stirring, and n-butanol is added at the same time according to the ratio of inorganic clay: n-butanol = 1g: 1ml, Stir at a constant temperature of 65°C for 12h. After the solution was cooled to room temperature, suction filtration was performed, and 0.1mol / L AgNO 3 The solution is titrated to the filtrate until there is no bromide ion in the filtrate, and the pre-expanded organoclay is obtained by drying at room temperature, which is ground and set aside. Mix 100 parts of nitrile rubber and 5 parts of pre-expanded organic clay on a double-roller mill for about 30 minutes, then ...

Embodiment 2

[0060] The nitrile rubber is changed into brominated butyl rubber, and all the other operation steps are with embodiment 1, adopt the scanning electron microscope photograph of the organoclay and brominated butyl rubber nanocomposite material prepared by the preparation technology of the present invention as Figure 7 The mechanical properties are shown in Table 2.

Embodiment 3

[0062] Change n-butanol to acrylic acid, and the rest of the operation steps are the same as in Example 1. The mechanical properties of the organoclay and nitrile rubber nanocomposite prepared by the preparation technology of the present invention are shown in Table 3.

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Abstract

The invention discloses a novel preparation method of a rubber-clay nanocomposite. The preparation method comprises the following steps of: adding an organic modifier into inorganic clay to modify the inorganic clay into organic clay; simultaneously adding an organic solvent for pre-expanding to obtain pre-expanded organic clay; and mixing the pre-expanded organic clay with rubber and an accessory ingredient to obtain the rubber-clay nanocomposite, wherein the organic modifier is hexadecyl trimethyl ammonium bromide, hexadecyl trimethyl ammonium chloride or octadecyl trimethyl ammonium bromide; the organic solvent is acroleic acid, castor oil, Vaseline or n-butyl alcohol; and 5 parts by mass of pre-expanded organic clay is added into 100 parts by mass of rubber. Due to the adoption of themethod, stepwise treatment of organic modification and pre-expanding of clay is avoided, and the production process is simplified; and meanwhile, the microcosmic phase state structure and mechanical property of the prepared nanocomposite is remarkably superior to corresponding structure and performance of a composite material prepared from pre-expanded organic clay by adopting a mechanical blending method. The method is easy for industrial production, and has a wider application prospect.

Description

[0001] technical field [0002] The invention relates to a novel preparation method of a rubber-clay nanocomposite material, that is, a preparation technology for preparing a rubber-clay nanocomposite material by using organically modified and pre-expanded clay. Background technique [0003] Clay is an abundant and cheap natural material that can be obtained without petroleum, and has long been used as a filler in the rubber industry. Such as kaolin, montmorillonite, red clay and clay and other series of fillers. The most commonly used of these is montmorillonite, also known as bentonite. [0004] The main component of montmorillonite is montmorillonite, the chemical formula is 4SiO 2 ·Al 2 o 3 ·H 2 O. The mineral montmorillonite belongs to the monoclinic system, and is a 2:1 type layered silicate mineral composed of two layers of silicon-oxygen tetrahedrons and a layer of aluminum (magnesium) oxygen (hydroxyl) octahedral sheets sandwiched between them. The layers are...

Claims

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Application Information

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IPC IPC(8): C08L21/00C08K13/06C08K9/04C08K7/26C08K3/34C08L23/22C08L9/06C08L9/02C08L23/28
Inventor 梁玉蓉谭英杰王林艳张涛胡刚
Owner TAIYUAN INST OF TECH
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