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Preparation method of colloidal antimony pentoxide

A technology of antimony pentoxide and colloid, which is applied in the field of preparation of colloidal antimony pentoxide, can solve the problems of large particle size of antimony pentoxide colloidal particles, low degree of dispersion of colloidal particles, uneven particle size distribution, etc., and achieve production The effect of short cycle, low energy consumption and uniform particle size distribution

Inactive Publication Date: 2015-05-06
QINGDAO WANGYU RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production method of colloidal antimony pentoxide has a long production cycle and high energy consumption, and the colloidal particle size of the colloidal antimony pentoxide produced is relatively large, the particle size distribution is uneven, and the degree of dispersion of the colloidal particles is not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] 1. Add 306g of triethanolamine into a beaker filled with 1L of water, add 79g of phosphoric acid, and produce triethanolamine phosphate by ultrasonication for 10 minutes;

[0018] 2. Add the above-mentioned triethanolamine phosphate into a 2L three-necked flask equipped with 1 kg of antimony trioxide powder, a magnetic stirrer and a reflux condenser, stir and heat up to 95°C-100°C, and heat at a constant temperature;

[0019] 3. Under full stirring, add 1.16kg of 30% oxidant hydrogen peroxide dropwise at a rate of 0.02ml / s through a constant pressure funnel. Antimony, when the concentration of antimony pentoxide is greater than its solubility in water, antimony pentoxide will be precipitated from the water in the form of solid phase, forming the initial gel core, adsorbing charged particles, and finally forming a sol;

[0020] 4. Evaporate, concentrate and dry the hydrosol to obtain colloidal antimony pentoxide dry powder.

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Abstract

The invention discloses a preparation method of colloidal antimony pentoxide. The preparation method comprises following steps, step1, triethanolamine is delivered into a beaker filled with water, phosphoric acid is added, and triethanolamine phosphate is obtained via 10min of ultrasonic treatment; step 2, the obtained triethanolamine phosphate is delivered into a three-mouth flask filled with antimonous oxide powder, an obtained mixture is stirred, is heated to 95 to 100 DEG C, and is subjected to constant temperature heating, wherein the three-mouth flask is provided with a magnetic stirring apparatus and a reflux condensing tube; step 3, oxidizing agent hydrogen peroxide is added dropwise using a constant-pressure funnel with full stirring, and after adding, an obtained mixed material is subjected to oxidation refluxing for 30min; and step 4, colloidal antimony pentoxide dry powder is obtained via evaporation, condensation, and drying of an obtained hydrosol. The preparation method is simple; production period is short; energy consumption is low; particle size distribution of the obtained antimony pentoxide colloid particles is uniform; and colloid particle dispersion degree is high.

Description

[0001] technical field [0002] The invention relates to a preparation method of a compound, in particular to a preparation method of colloidal antimony pentoxide. [0003] Background technique [0004] Colloidal antimony pentoxide has a large specific surface area, high thermal stability, strong covering ability and transparency, and is regarded as an important flame retardant material, and is widely used as a flame retardant for rubber and other products. The current production method of colloidal antimony pentoxide has a long production cycle and high energy consumption, and the colloidal particles of antimony pentoxide produced have large particle sizes, uneven particle size distribution, and low dispersion of colloidal particles. [0005] Contents of the invention [0006] The object of the present invention is to provide a preparation method of colloidal antimony pentoxide, which has simple process, short production cycle, low energy consumption, and the produced c...

Claims

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Application Information

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IPC IPC(8): C01G30/00
CPCC01G30/005C01P2006/22
Inventor 梁松杰
Owner QINGDAO WANGYU RUBBER
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