Light calcium carbonate ultrafine powder material and application thereof in polyaniline conductive film

A technology of light calcium carbonate and ultrafine powder, which is applied in the direction of fibrous filler, inorganic pigment treatment, dyeing low molecular organic compound treatment, etc. It can solve the problems of uneven dispersion of high polymer, small particle size of ultrafine calcium carbonate, Interfacial defects and other problems, to achieve the effect of improving storage stability, improving conductivity stability, and improving dispersion compatibility

Inactive Publication Date: 2018-10-12
SUZHOU ZHIRUI PHOTOELECTRIC MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a filler for plastic products, calcium carbonate can improve the heat resistance, wear resistance, dimensional stability, rigidity and processability of the product, and reduce the cost of the product. Strong alkalinity, this hydrophilic and oleophobic nature makes the affinity between calcium carbonate and organic polymers poor, and it is easy to form aggregates, resulting in uneven dispersion in the polymer, resulting in the interface between the two materials Defects, the direct application effect is not good; in addition, the superfine calcium carbonate has a small particle size, a large specific surface area and a high specific surface energy, and it is easy to cause particles to coagulate and agglomerate during the preparation and post-treatment process, forming two Sub-particles make the particle size larger and lose the function of ultra-fine materials in the application process, thus affecting the actual effect and cannot function as a functional filler.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Preparation of composite silane solution

[0021] Take 1 part of silane coupling agent kh560, add it to 13 times its weight in absolute ethanol, raise the temperature to 60°C, add 2 parts of dodecyl mercaptan, keep stirring for 20 minutes to obtain a composite silane solution.

[0022] 2) Preparation of light calcium carbonate ultrafine powder material

[0023] Take 4 parts of stearic acid, heat and melt, mix with 8 parts of light calcium carbonate, add to deionized water 70 times the weight of the mixture, ultrasonic for 10 minutes, mix with the above-mentioned composite silane solution, send it into the reaction kettle, control The pressure of the reaction kettle is 1Mpa, the temperature is increased to 95°C, the temperature is kept and stirred for 2 hours, the material is discharged, cooled, centrifuged, and the precipitate is dried to obtain a light calcium carbonate superfine powder material.

Embodiment 2

[0025] 1) Preparation of composite silane solution

[0026] Take 0.7 part of silane coupling agent kh560, add it to absolute ethanol which is 10 times its weight, raise the temperature to 55°C, add 1 part of dodecyl mercaptan, keep stirring for 4 minutes, and obtain a composite silane solution;

[0027] 2) Preparation of light calcium carbonate ultrafine powder material

[0028] Take 3 parts of stearic acid, heat and melt, mix with 6 parts of light calcium carbonate, add to deionized water 60 times the weight of the mixture, ultrasonic for 5 minutes, mix with the above-mentioned composite silane solution, send it into the reaction kettle, control The pressure of the reaction kettle is 0.9mpa, the temperature is increased to 90°C, the temperature is kept and stirred for 1 hour, the material is discharged, cooled, centrifuged, and the precipitate is dried to obtain a light calcium carbonate superfine powder material.

Embodiment 3

[0030] Preparation of polyaniline conductive film:

[0031] 1) Take 5 parts of sodium persulfate, add it to deionized water 30 times its weight, and stir evenly to obtain an aqueous solution of sodium persulfate;

[0032] 2) Take 3 parts of polytetrafluoroethylene wax, add it to 200 parts of solvent, and stir evenly to obtain a wax solvent; the solvent is a mixed solution of acetone and dimethylformamide with a volume ratio of 1:7;

[0033] 3) Take 1 part of tert-butyl hydroquinone, add it to chloroform 10 times its weight, stir evenly, add 2 parts of p-toluenesulfonic acid, ultrasonicate for 20 minutes, add 140 parts of aniline, stir evenly, and send it to Into the reaction kettle, nitrogen gas was introduced, and the temperature of the reaction kettle was adjusted to 70° C., the above-mentioned aqueous solution of sodium persulfate was added, and the temperature was stirred for 5 hours, and the material was discharged and cooled to obtain a polyaniline solution;

[0034] 4)...

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Abstract

The invention belongs to the field of preparation of ultrafine powder materials, and particularly relates to a light calcium carbonate ultrafine powder material and application thereof in a polyaniline conductive film. The powder material is prepared by the following steps: taking stearic acid, heating and melting, mixing the stearic acid with light calcium carbonate, adding the mixture in deionized water with the weight of 60 to 70 times of the weight of the mixture, ultrasonically treating for 5 to 10 minutes, mixing with a composite silane solution, feeding into a reaction kettle, thermallyinsulating, stirring, discharging, cooling, centrifuging, separating, drying a precipitate, and grinding to obtain the light calcium carbonate ultrafine powder material. The stearic acid is firstly used to treat the light calcium carbonate, the surface reactivity of the light calcium carbonate is improved by the surface adsorption effect of the stearic acid, then the light calcium carbonate is blended with ethanol and dodecyl mercaptan dispersed the treated by a silane coupling agent, through high temperature esterification, the dispersion compatibility of the calcium carbonate among organicpolymers can be improved, and improvement of the mechanical stability of a finished film can be well promoted.

Description

technical field [0001] The invention belongs to the field of ultrafine powder material preparation, and in particular relates to a light calcium carbonate ultrafine powder material and its application in polyaniline conductive films. Background technique [0002] As a filler for plastic products, calcium carbonate can improve the heat resistance, wear resistance, dimensional stability, rigidity and processability of the product, and reduce the cost of the product. Strong alkalinity, this hydrophilic and oleophobic nature makes the affinity between calcium carbonate and organic polymers poor, and it is easy to form aggregates, resulting in uneven dispersion in the polymer, resulting in the interface between the two materials Defects, the direct application effect is not good; in addition, the superfine calcium carbonate has a small particle size, a large specific surface area and a high specific surface energy, and it is easy to cause particles to coagulate and agglomerate du...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/08C09C3/12C08J5/18C08L79/02C08K13/06C08K9/04C08K3/26C08K9/06C08G73/02
CPCC01P2006/22C08G73/0266C08J5/18C08J2379/02C08J2427/18C08K3/26C08K9/04C08K9/06C08K13/06C08K2003/265C09C1/021C09C3/006C09C3/08C09C3/12
Inventor 顾黎明
Owner SUZHOU ZHIRUI PHOTOELECTRIC MATERIAL TECH CO LTD
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