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Preparation of hydrophobic nature nano boric acid copper crystal whisker with in situ one-step method

A technology of copper borate and whiskers, which is applied in the field of preparation of hydrophobic copper borate whiskers, can solve the problems that the quality of whiskers is not as good as that of hydrothermal method, the operation of equipment is complicated, and the gas is easy to pollute the environment, so as to achieve high economic value and social value , The preparation process is simple and the effect of simplifying the process

Inactive Publication Date: 2009-01-14
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Some whisker preparation methods in China mainly include hydrothermal method and solid-phase method, both of which have limitations. The former has higher requirements for experimental equipment, and needs to use a reactor to complete the experiment, and the output is low. It is complex and virtually increases the cost; while the latter requires high-temperature calcination, which will inevitably increase the particle size of the product, and the high-temperature calcination consumes a lot of energy, the production cycle is long, and the use of flux increases the cost. At the same time The emitted gas is easy to pollute the environment, and the quality of the obtained whiskers is not as good as that of the hydrothermal method
Therefore, these unfavorable factors will cause the economic and social benefits of the product to be lost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 1. Add 50ml of Na with a molar content of 0.1mol / l to the three-necked flask 2 B 4 o 7 10H 2 O put into a water bath at 50°C, add a surfactant and stir evenly;

[0014] 2. Under stirring, add 20ml of 1mol / l copper salt solution;

[0015] 3. Keep the temperature and continue to stir for 5 hours;

[0016] 4. Filter and wash the upper product;

[0017] 5. Dehydration and drying at 60°C, and grinding to obtain copper borate powder with a diameter of 500nm, a length of 10μm, and an aspect ratio of 20;

Embodiment 2

[0019] 1. Add 50ml of Na with a molar content of 0.1mol / l to the three-necked flask 2 B 4 o 7 10H 2 O put into a 70°C water bath, add surfactant and stir evenly;

[0020] 2. Under stirring, add 20ml of 1mol / l copper salt solution;

[0021] 3. Keep the temperature and continue to stir for 5 hours;

[0022] 4. Filter and wash the upper product;

[0023] 5. Dehydration and drying at 60°C, and grinding to obtain copper borate powder with a diameter of 500nm, a length of 30μm, and an aspect ratio of 60;

Embodiment 3

[0025] 1. Add 50ml of Na with a molar content of 0.1mol / l to the three-necked flask 2 B 4 o 7 10H 2 O put in a 90°C water bath, add surfactant and stir evenly;

[0026] 2. Under stirring, add 20ml of 1mol / l copper salt solution;

[0027] 3. Keep the temperature and continue to stir for 7 hours;

[0028] 4. Filter and wash the upper product;

[0029] 5. Dehydration and drying at 60°C, and grinding to obtain copper borate whisker powder with uniform appearance. The contact angle of the obtained product is 100 degrees through the contact angle test. It can be seen from the scanning electron microscope that the diameter of the product is 500nm, the length is 60μm, and the aspect ratio is 120;

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Abstract

The invention adopts the technical proposal that: 0.1 to 1.0 mol / l of borax solution of a certain volume is filled in a reactor, a negative ion surface active agent accounting for 1 to 4 percent of the borax is added, after being evenly mixed, copper salt with the intensity of 1 to 2 mol / l is added according to the material feeding ratio, the mixture is mixed, the temperature is increased to 50 to 95 DEG C, the mixing is performed under the constant temperature, the crystallizing reaction lasts for 5 to 12 hours, after filtering, cleaning, dehydrating and drying treatments at the temperature of 60 to 120 DEG C, the nanometer copper borate crystal whisker powder with the diameter of 200 to 500 nm, the length of 10 to 100 micron, and the length-diameter ratio of 20 to 500 is obtained, and the contact angle is 100 to 140 degrees. The invention has the advantages that the preparation process is simple, the nanometer copper borate crystal whisker can be finally produced, a fluxing agent is not required like other crystal whisker preparation methods, high temperature scarifying is not required, therefore pollution can not be generated, and the product manufactured through the nanometer copper borate crystal whisker preparation method has higher economic value and social value.

Description

technical field [0001] The invention relates to a method for preparing hydrophobic copper borate whiskers, in particular to a new method for preparing hydrophobic copper borate whiskers in situ at normal pressure and low temperature liquid phase. Background technique [0002] The fact that the energy crisis poses a serious threat to human existence has attracted worldwide attention. Governments and relevant departments of various countries have invested huge funds, manpower and material resources to find solutions to the problem. But so far, humans have not found new energy sources that can replace oil and coal resources. There are two urgent tasks that human beings must solve. One is to reduce the consumption of existing resources and try to delay the arrival of non-renewable energy exhaustion. The other is to develop renewable new energy to reduce or replace human dependence on non-renewable resources. [0003] Boron is a widely used chemical mineral. Boron and boron comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B7/14C30B29/22C30B29/62C01B35/12
Inventor 田玉美郑云辉刘艳华赵旭丁雪峰郭玉鹏王子忱
Owner JILIN UNIV