Preparation method for nanoscale 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: 2016-02-24
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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  • Preparation method for nanoscale silicon oxide composite dispersion liquid
  • Preparation method for nanoscale silicon oxide composite dispersion liquid
  • Preparation method for nanoscale silicon oxide composite dispersion liquid

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Experimental program
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Embodiment 1

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

[0046] (1) Step of adding dispersant: add deionized water into the reaction kettle, then add 6% dispersant and 0.1% stabilizer accounting for the mass percentage of nano-silica powder, and stir for 15 minutes at a temperature of 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% of the mass percent of the nano-silica composite dispersion, at 20°C, Stir for 10 minutes; the particle size of the nano silicon oxide powder is 5-10nm, and its specific surface area is 1128㎡ / g;

[0048] (3) The step of adjusting the pH value: adding lye to the liquid obtained in step...

Embodiment 2

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

[0052] (1) Step of adding dispersant: add deionized water in the reaction kettle, then add 0.5% dispersant and 5% stabilizer accounting for the mass percentage of nano-silica powder, and stir for 15 minutes at 35°C; Described dispersant is alkyl polyoxyethylene ether (Pingping adds O); Described stabilizing agent is polyvinyl alcohol;

[0053] (2) Step of adding nano-silicon oxide: in the liquid obtained in step (1), add nano-silicon oxide powder, the nano-silicon oxide powder accounts for 8% by mass of the nano-silicon oxide composite dispersion liquid, at a temperature of 50 ° C , 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) The step of adjusting the pH value: adding lye to...

Embodiment 3

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

[0058] (1) Step of adding dispersant: add deionized water to the reaction kettle, then add 3% dispersant and 2% stabilizer accounting 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) Step of adding nano-silicon oxide: in the liquid obtained in step (1), add nano-silicon oxide powder, the nano-silicon oxide powder accounts for 11% of the mass percentage of the nano-silicon oxide composite dispersion liquid, at a temperature of 40 ° C , stirring for 8 minutes; in the nano-silica powder, the nano-silica particle size is 5-10nm, and its specific surface area is 1160㎡ / g;

[0060] (3) Step of adjusting the pH value: adding lye to the liquid...

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Abstract

The invention discloses a preparation method for nanoscale silicon oxide composite dispersion liquid, belongs to the technical field of nanomaterial preparation, and solves the problems of low stability, high probability of demulsification, non-ideal gel forming state, and high usage amount of gel in the existing nanoscale silicon oxide sol. The preparation method comprises a step of adding a dispersing agent, a step of adding the nanoscale silicon oxide, a step of adjusting the PH value and a step of adding compatibilizer in sequence; and the prepared nanoscale silicon oxide composite dispersion liquid is colorless transparent liquid, the PH value of the composite dispersion liquid is 9-12, the specific gravity at the temperature of 25 DEG C is 1.07-1.13 g / cm3, and the viscosity at the temperature of 25 DEG C is 1.71-1.78 mPa.S. The preparation method for the nanoscale silicon oxide composite dispersion liquid effectively solves the problems of difficulty in adding gel and the non-ideal gel forming state in using domestic and overseas gel electrolyte products, so that the quality of the conventional storage battery product is improved.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing a nano silicon oxide composite dispersion liquid. Background technique [0002] my country's lead-acid battery production capacity is 280 million kVAh, 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 restrictions and other issues, 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 clearly pointed out in the 12th Five-Year Plan, Higher and more stringent requirements are put forward for the quality and service conditions of the lead-acid battery products used in conjunction with ...

Claims

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Application Information

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Patent Type & Authority Applications(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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