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Preparation method of zinc oxide for rubber

A zinc oxide and rubber technology, applied in the direction of dyeing low-molecular-weight organic compounds, fibrous fillers, etc., can solve the problem of not meeting the requirements of ideal rubber additives, and achieve the effect of easy operation and improved physical properties

Inactive Publication Date: 2008-08-06
TAICANG CHENGXIN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently on the market, the specific surface area of ​​the indirect method zinc oxide products produced by the indirect method is generally 4m 2 / g, and the specific surface area of ​​nano-zinc oxide is 30m 2 / g above, can not meet the requirements of ideal rubber additives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A preparation method of zinc oxide for rubber, using the indirect method of zinc oxide as a raw material, sequentially prepares zinc oxide for rubber through the following steps:

[0015] (1), surface treatment: add 1000 kg of indirect method zinc oxide to the autoclave, then add 4000 liters of water, after heating to 100 degrees Celsius, add 200 kg of alkylphenol polyoxyethylene ether surfactants (ie OP series ), making slurry, keeping the slurry at a pressure of 0.28-0.32 MPa and a temperature of 90-100 degrees Celsius for 8 hours of activation treatment.

[0016] (2), press filtration and drying: filter the above slurry, and dry the filter residue obtained by the filtration at 90 degrees Celsius to completely remove the water.

[0017] (3) Calcination activation: Calcining the zinc oxide dried in step (2) in a stainless steel converter, the calcination temperature is 500 degrees Celsius.

[0018] (4) The zinc oxide calcined and activated in the step (3) is pulverize...

Embodiment 2

[0022] A preparation method of zinc oxide for rubber, using the indirect method of zinc oxide as a raw material, sequentially prepares zinc oxide for rubber through the following steps:

[0023] (1) Surface treatment: add 1,000 kg of indirect method zinc oxide to the autoclave, then add 4,000 liters of water, heat to 100 degrees Celsius, add 250 kg of alkylphenol polyoxyethylene ether surfactants, and make a slurry Material, keep the slurry at a pressure of 0.28-0.32 MPa and a temperature of 90-100 degrees Celsius for 8 hours of activation treatment.

[0024] (2), press filtration and drying: filter the above slurry, and dry the filter residue obtained by filtering at 90 degrees Celsius until the water is completely removed.

[0025] (3) Calcination activation: Calcining the zinc oxide dried in step (2) in a stainless steel converter, the calcination temperature is 500 degrees Celsius.

[0026] (4) The zinc oxide calcined and activated in the step (3) is pulverized, and final...

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Abstract

The invention relates to a preparation process of zinc oxide which is used on rubber, which uses indirect zinc oxide as raw material, and prepares zinc oxide for rubber through conducting surface process, filter-pressing, drying, calcination activation and disintegration for indirect zinc oxide raw material, wherein the surface process is that conducting slurry which is prepared through mixing indirect zinc oxide with water-based auxiliary agent and surface activator with activating processing for 7-9 hours under the condition of 60-100 Celsius temperature and 0.05-0.8 MPa pressure. Zinc oxide for rubber whose specific surface area is 8-30m2 / g can be prepared through the process which is simple.

Description

technical field [0001] The invention relates to a preparation method of zinc oxide for rubber. Background technique [0002] Zinc oxide for rubber mainly includes indirect zinc oxide and direct zinc oxide. In recent years, nano zinc oxide has been gradually used as a rubber additive. As a rubber additive, the specific surface area of ​​zinc oxide is very critical. If the specific surface area is too small, the dispersibility of zinc oxide will be poor, the rubber vulcanization time will be long, and the rubber produced will have poor heat resistance and short life; Large, such as nano-zinc oxide, there are problems such as sticking rolls, large dust and environmental pollution, and the rubber after vulcanization is easy to be brittle and easy to break. The specific surface area is 8m 2 / g-30 2 Zinc oxide between / g is an ideal rubber additive. [0003] Currently on the market, the specific surface area of ​​the indirect method zinc oxide products produced by the indirect...

Claims

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Application Information

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IPC IPC(8): C09C1/04C09C3/08C08L21/00
Inventor 杨介仓
Owner TAICANG CHENGXIN CHEM
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