A kind of preparation method of nano silicon oxide composite dispersion liquid

A nano-silica, compound dispersion technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of poor stability of nano-silica sol, unsatisfactory colloidal state, high colloid usage, etc. problems, to achieve the effect of stability, gel hydration reduction, and strong gel strength

Active Publication Date: 2017-07-28
上饶市安纳拓新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The invention provides a method for preparing a nano-silica composite dispersion liquid, which solves the problems of poor stability of the existing nano-silica sol, easy demulsification, unsatisfactory gelation state, and high colloid usage

Method used

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  • A kind of preparation method of nano silicon oxide composite dispersion liquid
  • A kind of preparation method of nano silicon oxide composite dispersion liquid
  • A kind of preparation method of nano silicon oxide composite dispersion liquid

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Embodiment 1, the preparation method of nano-silica composite dispersion, such as figure 1 As shown, the sequence includes a step of adding a dispersant, a step of adding nano silica, a step of adjusting the pH value, and a step of adding a compatibilizer:

[0046] (1) Adding dispersant step: Add deionized water to the reaction kettle, then add 6% dispersant and 0.1% stabilizer which account for the mass percentage of nano silica powder, and stir for 15 minutes at 20°C; The dispersant is sodium polycarboxylate; the stabilizer is hydroxymethyl cellulose;

[0047] (2) Step of adding nano-silica: In the liquid obtained in step (1), add nano-silica powder. The nano-silica powder accounts for 5% by mass of the nano-silica composite dispersion. At 20°C, Stir for 10 minutes; the particle size of the nano-silica powder is 5-10nm, and its specific surface area is 1128㎡ / g;

[0048] (3) Step of adjusting the pH value: adding lye to the liquid obtained in step (2), stirring for 120 minu...

Embodiment 2

[0051] Embodiment 2, the preparation method of nano-silica composite dispersion, the sequence includes a step of adding a dispersant, a step of adding nano-silica, a step of adjusting the pH value, and a step of adding a compatibilizer:

[0052] (1) Adding dispersant step: Add deionized water to the reaction kettle, then add 0.5% dispersant and 5% stabilizer, which account for the mass percentage of nano silica powder, and stir for 15 minutes at 35°C; The dispersing agent is alkyl polyoxyethylene ether (flat plus O); the stabilizer is polyvinyl alcohol;

[0053] (2) Step of adding nano-silica: in the liquid obtained in step (1), adding nano-silica powder, the nano-silica powder accounts for 8% of the mass percentage of the nano-silica composite dispersion liquid, at a temperature of 50 ℃ , Stirring for 5 minutes; the particle size of the nano-silica powder is 5-10nm, and its specific surface area is 1100㎡ / g;

[0054] (3) Step of adjusting the pH value: adding lye to the liquid obtai...

Embodiment 3

[0057] Embodiment 3, the preparation method of nano-silica composite dispersion liquid, the sequence includes the steps of adding dispersant, adding nano-silica, adjusting pH value and adding compatibilizer:

[0058] (1) Adding dispersant step: Add deionized water to the reaction kettle, then add 3% dispersant and 2% stabilizer which account for the mass percentage of nano silica powder, and stir for 10 minutes at a temperature of 50°C; The dispersant is glycerin; the stabilizer is hydroxyethyl cellulose;

[0059] (2) The step of adding nano-silica: In the liquid obtained in step (1), adding nano-silica powder, the nano-silica powder accounts for 11% of the mass percentage of the nano-silica composite dispersion liquid at a temperature of 40°C , Stirring for 8 minutes; in the nano-silica powder, the particle size of the nano-silica is 5-10nm, and its specific surface area is 1160㎡ / g;

[0060] (3) Step of adjusting the pH value: adding lye to the liquid obtained in step (2), stirring...

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Abstract

A method for preparing a nano-silica composite dispersion liquid belongs to the technical field of nano-material preparation and solves the problems of poor stability of the existing nano-silica sol, easy demulsification, unsatisfactory colloidal state, and high colloid usage. The sequence of the present invention includes a step of adding a dispersant, a step of adding nano-silicon oxide, a step of adjusting the pH value and a step of adding a compatibilizer; the prepared nano-silicon oxide composite dispersion liquid is a colorless and transparent liquid with a pH value of 9 to 12,25 The specific gravity at ℃ is 1.07-1.13g / cm3, and the viscosity at 25 ℃ is 1.71-1.78mPa·S; the present invention solves the problems of difficulty in adding glue and unsatisfactory gelling state of existing domestic and foreign colloidal electrolyte products, Effectively improve the quality of traditional storage battery products.

Description

Technical field [0001] The invention belongs to the technical field of nano-material preparation, and specifically relates to a method for preparing a nano-silica composite dispersion. Background technique [0002] The production capacity of lead-acid batteries in China is 280 million kVAh, which is more than two-thirds of the global total. In recent years, the industry’s output has increased at a rate of 20%. At present, lead-acid batteries also have low energy density and power density. , Applicable environmental temperature limitations, the 12th Five-Year Plan clearly pointed out the development of a new generation of nuclear energy, solar thermal utilization and photovoltaic thermal power generation, wind power technology and equipment, smart grids, plug-in hybrid vehicles, and pure electric vehicles. It puts forward higher and more stringent requirements on the quality and use conditions of its supporting lead storage battery products. [0003] As a kind of valve-regulated le...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/12H01M10/10B82Y30/00
CPCB82Y30/00H01M10/10H01M10/12H01M2300/0085Y02E60/10Y02P70/50
Inventor 徐翠云李翔刘欣
Owner 上饶市安纳拓新材料有限公司
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