Preparation method of illite/montmorillonite mixed-layer clay/natural rubber compounded rubber

A technology of illuminator mixed layer and natural rubber, which is applied in the field of performance improvement of composite rubber, can solve the problems of reducing the characteristics of natural rubber, uneven dispersion of inorganic fillers, and failure to achieve reinforcing effects, so as to achieve high chemical resistance and reduce mixing. Refining equipment, good physical and mechanical properties

Inactive Publication Date: 2014-02-19
中科纳达新材料(广西)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for the rubber to eat powder during the mixing process, and the powder is flying, which not only consumes energy but also pollutes the environment; in addition, the dry mixing process has limitations, and the inorganic filler is unevenly dispersed in the rubber matrix, and serious agglomeration occurs locally, which is not enough To achieve the ideal reinforcement effect, but also reduce the original characteristics of natural rubber

Method used

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  • Preparation method of illite/montmorillonite mixed-layer clay/natural rubber compounded rubber
  • Preparation method of illite/montmorillonite mixed-layer clay/natural rubber compounded rubber

Examples

Experimental program
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Effect test

Embodiment 1

[0034] (1) Slurry preparation: crush the natural I-Monite mixed layer clay into granular materials smaller than 3mm, then soak the crushed materials in water for 8 hours, then add sodium hexametaphosphate as a dispersant, and stir for 2 hours with a sand mill disperser , after finally crossing the 375 mesh sieve, obtain the slurry under the sieve; wherein the solid content of the slurry is 45%, and the addition of sodium hexametaphosphate is 0.5wt% of the solid content of the slurry;

[0035] (2) Chemical bleaching: bleach the slurry obtained in step (1) at 1000rpm and 65°C, specifically: first use HCl solution to adjust the pH value of the slurry to 4, then add hydrosulfite, react for 45 minutes, and then add Oxalic acid, reacted for 45min; after that, the slurry was separated to obtain a yellow solid, and the obtained yellow solid was washed to white, and then water was added to make the solid content of the slurry 45wt%, and the bleached slurry could be obtained; wherein, th...

Embodiment 2

[0042] (1) Slurry preparation: crush the natural imonite mixed layer clay into granular materials smaller than 3mm, then soak the crushed materials in water for 12 hours, then add sodium hexametaphosphate as a dispersant, and stir for 2 hours with a sand mill disperser , after finally crossing the 375 mesh sieve, obtain the slurry under the sieve; wherein the solid content of the slurry is 35%, and the addition of sodium hexametaphosphate is 1.0wt% of the solid content of the slurry;

[0043] (2) Chemical bleaching: bleach the slurry obtained in step (1) at 700rpm and 65°C, specifically: first use HCl solution to adjust the pH value of the slurry to 5, then add hydrosulfite, react for 45min, and then add Oxalic acid, reacted for 45min; after that, the slurry was separated to obtain a yellow solid, and the obtained yellow solid was washed to white, and then water was added to make the solid content of the slurry 45wt%, and the bleached slurry could be obtained; wherein, the additi...

Embodiment 3

[0050] (1) Slurry preparation: crush the natural imonite mixed layer clay into granular materials smaller than 3mm, then soak the crushed materials in water for 12 hours, then add sodium hexametaphosphate as a dispersant, and stir for 4 hours with a sand mill disperser , after finally crossing the 375 mesh sieve, obtain the slurry under the sieve; wherein the solid content of the slurry is 30%, and the addition of sodium hexametaphosphate is 1.0wt% of the solid content of the slurry;

[0051] (2) Chemical bleaching: bleach the slurry obtained in step (1) at 1000rpm and 65°C, specifically: first use HCl solution to adjust the pH value of the slurry to 5, then add hydrosulfite, react for 60 minutes, and then add Oxalic acid, reacted for 60min; then separated the slurry to obtain a yellow solid, washed the obtained yellow solid to white, then added water to make the solid content of the slurry 45wt%, and then obtained the bleached slurry; wherein, the addition of hydrosulfite Amo...

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Abstract

The invention discloses a preparation method of illite / montmorillonite mixed-layer clay / natural rubber compounded rubber and belongs to the technical field of the performance improvement of the compounded rubber. The preparation method comprises the following steps: (1) breaking, dispersing and sieving natural illite / montmorillonite mixed-layer clay so as to obtain slurry; (2) chemically bleaching the slurry; (3) grinding the bleached slurry so as to obtain nanometer slurry; (4) mixing natural latex and water so as to obtain natural latex turbid liquid; (5) mixing the nanometer slurry and the natural latex turbid liquid so as to obtain illite / montmorillonite mixed-layer clay / natural rubber turbid liquid; (6) flocculating the illite / montmorillonite mixed-layer clay / natural rubber turbid liquid and pelleting so as to obtain illite / montmorillonite mixed-layer clay / natural rubber compounded colloidal particles; and (7) drying the colloidal particles so as to obtain the illite / montmorillonite mixed-layer clay / natural rubber compounded rubber. The preparation method is simple in technological process; the production cost is reduced; the emission of dust is reduced; and the illite / montmorillonite mixed-layer clay / natural rubber compounded rubber prepared by the method has relatively strong mechanical property.

Description

technical field [0001] The invention relates to a preparation method of an illuminator mixed layer clay / natural rubber composite rubber, which belongs to the technical field of performance improvement of composite rubber. Background technique [0002] In recent years, the preparation and application of rubber / inorganic nanoparticle composites have become one of the hotspots in the world. With the rapid development of automobile and other industries, the requirements for high performance of tires are also increasing year by year, which requires tires to have good performance. Carbon black is usually used as a reinforcing agent for rubber used in tires. With the dwindling of petroleum resources, it has become a development trend for fillers to replace carbon black, which is completely dependent on petroleum, with a reinforcing effect close to that of carbon black. However, silica is generally synthesized by gas phase method or precipitation method, the process is relatively c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/02C08K13/06C08K9/02C08K7/00C08K3/34
Inventor 黄岩向龙华
Owner 中科纳达新材料(广西)有限公司
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