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Preparation method of abrasion-resistant and aging-resistant flame retardant rubber filled and modified by montmorillonite-hydrotalcite-fly ash

A technology of flame retardant rubber and hydrotalcite is applied in the field of rubber product materials, which can solve the problems of single, high cost, and complicated application methods of ash modification, and achieve the effects of simple process, low cost and obvious flame retardant effect.

Inactive Publication Date: 2018-12-11
ANHUI JINHUA ZINC OXIDE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The means of ash modification application are generally too complicated, single, and the cost is too high, which limits its use as a rubber filler.

Method used

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  • Preparation method of abrasion-resistant and aging-resistant flame retardant rubber filled and modified by montmorillonite-hydrotalcite-fly ash

Examples

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Embodiment 1

[0033] A method for preparing a wear-resistant and aging-resistant flame-retardant rubber filled with montmorillonite-hydrotalcite-fly ash is characterized in that it comprises the following steps:

[0034] (1) Composite organically modified montmorillonite:

[0035] Add deionized water to 3 parts of sodium montmorillonite at a ratio of 1:10, stir and disperse in a constant temperature water bath at 78-82°C for 25 minutes, add a compound surface modifier and mix, continue to stir and disperse for 3 hours, cool to room temperature, and filter with suction. Dry it in a constant temperature drying oven at 80-83°C, grind it through a 200-mesh sieve, and obtain a composite organically modified montmorillonite;

[0036] (2) Modified nitrate hydrotalcite by ion exchange method:

[0037] Add deionized water to 4 parts of nitrate-type hydrotalcite at a ratio of 1:60, blow in nitrogen, and heat at 90-93°C

[0038] After 2-3 hours, add 4 parts of sodium p-styrenesulfonate, continue hea...

Embodiment 2

[0048] A method for preparing a wear-resistant and aging-resistant flame-retardant rubber filled with montmorillonite-hydrotalcite-fly ash is characterized in that it comprises the following steps:

[0049] (1) Composite organically modified montmorillonite:

[0050] Add deionized water to 6 parts of sodium montmorillonite at a ratio of 1:10, stir and disperse in a constant temperature water bath at 78-82°C for 35 minutes, add a compound surface modifier to mix, continue to stir and disperse for 4 hours, cool to room temperature, and filter with suction. Dry it in a constant temperature drying oven at 80-83°C, grind it through a 200-mesh sieve, and obtain a composite organically modified montmorillonite;

[0051] (2) Modified nitrate hydrotalcite by ion exchange method:

[0052] Add deionized water to 5 parts of nitrate-type hydrotalcite at a ratio of 1:60, blow in nitrogen, and heat at 90-93°C

[0053] After 3 hours, add 5 parts of sodium p-styrenesulfonate, continue heatin...

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Abstract

The invention discloses a preparation method of an abrasion-resistant and aging-resistant flame retardant rubber filled and modified by montmorillonite-hydrotalcite-fly ash. The preparation method comprises the following steps of plasticating the natural rubber on an open mill; after roll coating, sequentially adding an activating agent, an anti-aging agent, surface-modified magnesium hydroxide, and fly ash, wherein the fly ash is compounded with organic modified montmorillonite, styrene sulfonic acid hydrotalcite and a coupling agent and is modified in a dry way; after complete material charge, respectively cutting the edges for three times at each side, forming a triangular package, sequentially adding a promoter and a vulcanizer, respectively cutting three times at left side and right side, and forming a triangular package; finally, forming the triangular packages for five times, and thinning for five times; adjusting the roll distance to discharge sheets, storing the sheets overnight, and vulcanizing on a flat plate vulcanizing machine, so as to obtain the modified rubber. The preparation method has the advantages that by adding the modified montmorillonite, the mechanical property and heat stability of the rubber are improved; the abrasion-resistant property of the modified rubber is excellent, and is related with the good blocking property, lubricating property and compatibility of the montmorillonite flaky layer, and the movement ability of molecular chain sections and the expansion of cracks are avoided.

Description

technical field [0001] The invention belongs to the field of rubber product materials, and in particular relates to a preparation method of wear-resistant, aging-resistant and flame-retardant rubber filled and modified with montmorillonite-hydrotalcite-fly ash. Background technique [0002] Montmorillonite / rubber nanocomposites have attracted widespread attention due to their unique superior properties. The dispersion of nanofiller particles in the rubber matrix and the compatibility of the two-phase interface determine whether high-performance montmorillonite / rubber composites can be prepared. Rubber nanocomposites: On the one hand, the operation is simple, the process is simple, and the filler is well dispersed in the rubber matrix; Dispersion of soil in rubber. [0003] Rubber is a material with high elasticity, which is widely used in sealing, petroleum and other fields, but aging is a common phenomenon in the process of processing, storage and use of rubber and rubber ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08K13/06C08K9/04C08K3/22C08K7/00C08K7/26
CPCC08K3/22C08K7/00C08K7/26C08K9/04C08K13/06C08K2003/2224C08K2003/2296C08K2201/014C08L2201/02C08L2201/08C08L7/00
Inventor 张训龙
Owner ANHUI JINHUA ZINC OXIDE CO LTD
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