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In-Situ Organic Modification-Pre-expansion Preparation Method of Rubber/Clay Nanocomposites

A technology of nano-composite materials and organic modifiers is applied in the field of new preparation of rubber and clay nano-composite materials, which can solve problems such as poor reinforcement ability, and achieve the effects of avoiding waste, reducing pollution and improving dispersion structure.

Active Publication Date: 2016-04-13
TAIYUAN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 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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  • In-Situ Organic Modification-Pre-expansion Preparation Method of Rubber/Clay Nanocomposites
  • In-Situ Organic Modification-Pre-expansion Preparation Method of Rubber/Clay Nanocomposites
  • In-Situ Organic Modification-Pre-expansion Preparation Method of Rubber/Clay Nanocomposites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Mix inorganic clay, cetyltrimethylammonium bromide and n-butanol uniformly in a certain proportion; the mass ratio of inorganic clay to cetyltrimethylammonium bromide is 2.8g:1g, and inorganic clay and n-butanol The mass ratio of butanol is 10g:2.4g (wherein the mass fraction of n-butanol in the prepared in-situ organic soil is 15% or ω 正丁醇 =15%, the same below); the mixed soil was left to stand for 1 hour; the above-mentioned mixed clay was ground in a three-roller mill for 5 minutes to obtain an in-situ organically modified and pre-expanded organoclay (referred to as in-situ organoclay) for future use. Mix 100 parts of nitrile rubber and 10 parts of in-situ organoclay on a double-roller mill for 30 minutes, then add the following compounding agents in three steps, the first step is to add 5 parts of zinc oxide and 1 part of stearic acid; In the second step, add 1.5 parts of dibenzothiazole disulfide (accelerator), 2.0 parts of N-isopropyl-N'-phenyl-p-phenylenediamine ...

Embodiment 2

[0048] Change the mass ratio of inorganic clay to n-butanol to 10g:3.4g (ω 正丁醇 =20%), the rest of the operation steps are the same as in Example 1, and finally the nitrile rubber / clay nanocomposite material is obtained, and its mechanical properties are shown in Table 1.

Embodiment 3

[0050] Change the mass ratio of inorganic clay to n-butanol to 10g:5.9g (ω 正丁醇 =30%), the rest of the operation steps are the same as in Example 1, and finally the nitrile rubber / clay nanocomposite material is obtained, and its mechanical properties are shown in Table 1.

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Abstract

The invention relates to an in-situ organic modified-pre-swelled preparation method of a rubber / clay nano composite material. The method comprises the following steps of simultaneously adding an organic modifier and an organic solvent with a given ratio into inorganic clay, and grinding the mixture through a three-roller grinding mill so as to realize the in-situ organic modification and pre-swelling of the clay; and adding the rubber and the in-situ organic modified and pre-swelled clay into an open mill, gradually adding ingredients step by step, and finally preparing the rubber / clay nano composite material. Results indicate that when the consumption of the organic solvent is 20%, the performance and the structure of the prepared nano composite material are optimal; meanwhile, the microscopic structure and the mechanical performance of the nano composite material are obviously better than those of a material prepared in a one-step method. The organic solvent is used quantitatively, so that the drying of the clay is avoided, the environmental pollution is reduced, the cost is reduced, and the pretreatment step is also simplified. The method disclosed by the invention is applicable to the industrialized production, and has a wide application prospect.

Description

technical field [0001] The invention relates to a novel preparation technology of a rubber-clay nanocomposite material, in particular to an in-situ organic modification-pre-expansion preparation method of a rubber / clay nanocomposite material. Background technique [0002] 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. [0003] The main component of montmorillonite is montmorillonite, and its chemical formula is 4SiO2·Al2O3·H2O. The mineral montmorillonite belongs to the monoclinic system. It is a 2:1 layered silicate mineral composed of two layers of silicon-oxygen tetrahedrons and a layer of aluminum (magnesium) oxygen (hydroxyl) octahedral sheets sandwiched between them. Interspersed with cations in the hydrated state....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/06C08L9/02C08K13/06C08K9/04C08K3/34C08K3/22C08K5/09C08K5/47C08K5/40C08K5/31C08K5/18C08K3/06
Inventor 梁玉蓉谭英杰段学召王林艳张涛胡刚刘舒婷
Owner TAIYUAN INST OF TECH
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