Formula and application method of mixed solution for modifying surface of conductive carbon fiber
A technology of conductive carbon fiber and mixed solution, which is applied to circuits, electrical components, battery electrodes, etc., can solve the problem that the electrical conductivity has not been significantly improved, and achieve the effects of reducing hydrophobicity, increasing specific surface area, and increasing adhesion.
Inactive Publication Date: 2019-08-02
SHUANGDENG GRP
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Problems solved by technology
Therefore, in reality, although conductive carbon fibers have been added to the lead paste, the electrical conductivity has not been significantly improved.
Method used
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[0022] The present invention is further illustrated below by way of examples.
[0023] The invention is a mixed solution formula for carbon fiber surface modification, which comprises the following components measured by weight percentage: 2-5% nitric acid, 1-15% lead nitrate, 0.3-1.5% binder, and the rest is pure water. The binder in the present invention is sodium silicate or high-purity starch, and the impurity content of the binder is required to be less than or equal to 1%, and there is no residue after gasification or decomposition at 400-600°C.
[0024] Three examples of mixed solutions of the examples with different quantities are prepared below within the scope permitted by the formula, and the specific values are shown in the component configuration table of the examples.
[0025] Example component configuration table
[0026]
[0027] The mixed solutions prepared by the examples listed in the above table can all achieve the desired effect through practical ap...
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Abstract
The invention discloses a formula of a mixed solution for modifying the surface of a conductive carbon fiber. The formula comprises 2-5% of nitric acid, 1-15% of lead nitrate, 0.3-1.5% of an adhesivewith the remaining of pure water by weight. The mixed solution prepared according to the formula is placed in a glass open container, the conductive carbon fibers to be modified in the surfaces are added, the carbon fibers is stirred to uniform on the basis of being completely wetted, the carbon fibers are fished out after standing for a while and then dried, the carbon fibers are sent to a blastfurnace for burning to the temperature of 480+ / -5 DEG C, and the obtained carbon fibers can be added to lead paste after that the furnace is cooled. The conductive carbon fibers whose surfaces are modified are much less hydrophobic, and can be completely embedded into active substances of the lead paste to improve the conductivity of the lead paste directly. A lead acid battery prepared from the lead past is improved in the performance greatly, especially the performances of charging acceptability and heavy current discharging performance.
Description
technical field [0001] The invention belongs to a technical solution in the technical field of corrosive solutions, in particular, the invention relates to a mixed solution formula for surface modification of conductive carbon fibers. The invention also relates to a matching application method. Background technique [0002] Efficiently operating digital equipment has relatively special working conditions, and has high requirements on the charging acceptance capacity and high-current discharge performance of the supporting lead-acid battery. There is a large gap between the commercially available lead-acid battery and the actual demand, and it is not suitable for direct matching. People in the industry know that lead paste is an important part of lead-acid batteries, and its preparation quality directly affects the performance of lead-acid batteries, especially the charge acceptance and high-current discharge performance. Therefore, in recent years, many manufacturers in the...
Claims
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IPC IPC(8): H01M4/36H01M4/56H01M4/62H01M10/06
CPCH01M4/366H01M4/56H01M4/625H01M10/06Y02E60/10
Inventor 吕雪平王富存
Owner SHUANGDENG GRP