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Hydrophobic white carbon black and method for preparing same

A white carbon black, hydrophobic technology, applied in silicon oxide and other directions, can solve problems such as large environmental pollution, achieve the effect of low comprehensive cost, solve environmental pollution, and rich sources

Inactive Publication Date: 2008-06-18
王力平 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the environmental pollution is relatively large during the production process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Get 1000Kg of rice husks and burn them in a combustion furnace for 20 minutes to generate black carbon ash. Dilute 15Kg of sodium hydroxide with water at a temperature of 90°C and cook with alkali for 3 hours. Then, at a temperature of 80°C, dilute 1Kg of concentrated sulfuric acid to The concentration is 15%, treated with acid for 10 minutes, then diluted with water, the material obtained by pressure filtration, diluted with water and ground, and the ground material was dried in a drying tower at 250°C for 5 minutes, and then dried The final material was stirred, and 3Kg of hexamethylsiloxane was diluted by spraying method and then added for surface treatment.

Embodiment 2

[0020] Get 1000Kg of rice husks and burn them in a combustion furnace for 30 minutes to generate black carbon ash. Dilute 25Kg of sodium hydroxide with water at a temperature of 100°C and cook with alkali for 5 hours. Then, at a temperature of 100°C, dilute 2Kg of concentrated sulfuric acid to The concentration is 15%, treated with acid for 20 minutes, then diluted with water, the material obtained by pressure filtration, diluted with water and ground, and the ground material was dried in a drying tower at 300°C for 10 minutes, and then dried The final material was stirred, and 5Kg of octamethylsiloxane was diluted by spraying method and then added for surface treatment.

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PUM

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Abstract

The invention relates to a preparation method of hydrophobic silicon dioxide. Rice hull, sulfuric acid, sodium hydroxide and multi-methyl siloxane are used as raw materials that are combusted, alkali cooked, acid treated, ground, filtered, dried and finished to form the hydrophobic silicon dioxide, wherein weight proportion of each raw material is the following: 10000kg rice hull, 10-20kg sulfuric acid, 150 -250kg sodium hydroxide and 30-50kg multi-methyl siloxane. The raw materials of the invention have rich sources, low synthetic cost, and simple process, the rice hull becomes from waste to treasure, thereby solving the problem of severe environmental pollution resulted from the rice hull. The product can widely be applied in various rubbers and plastics.

Description

technical field [0001] The invention relates to a hydrophobic white carbon black and a preparation method thereof, in particular to a preparation method for processing hydrophobic white carbon black with rice husks as raw materials. Background technique [0002] Rice husk is a by-product of rice production. It is the garbage of the food industry, which brings different degrees of pollution to the environment. This garbage resource has not been effectively treated and fully utilized in the past. At present, the use of rice husks to produce white carbon black There are many methods, such as combustion method and sodium silicate ore method. The "Manufacturing Process of Hydrophobic White Carbon Black" announced by the Patent Office of the State Intellectual Property Office on June 28, 2000 includes the preparation of No. I and No. II additives, mixing and feeding, The advantages of this process are that the production process is simple, does not need to go through high temperat...

Claims

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Application Information

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IPC IPC(8): C01B33/113
Inventor 王力平张庆德
Owner 王力平
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