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Polymer modified nano calcium carbonate novel product series

A technology of nano-calcium carbonate and polymer modifier, applied in the direction of calcium carbonate/strontium/barium, dyed polymer organic compound treatment, fibrous filler, etc. Large drop, limited effect, etc., to achieve huge application development potential, improved bending strength, and low cost

Active Publication Date: 2019-06-11
XIAMEN UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dispersibility of the product can be improved to a certain extent by reducing the particle size and increasing the lipophilicity, but the effect is limited, especially the strength is greatly reduced, and it is difficult to achieve the effect of low-cost production, large-scale addition, and simultaneous strengthening and toughening

Method used

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  • Polymer modified nano calcium carbonate novel product series
  • Polymer modified nano calcium carbonate novel product series
  • Polymer modified nano calcium carbonate novel product series

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Weigh 75g of glycine to dissolve in a certain amount of water, then add 40g of sodium hydroxide to stir the reaction, and dilute to a 1L volumetric flask to prepare a 1mol / L sodium glycinate solution. Pour the sodium glycinate solution into a three-necked round-bottomed flask, introduce carbon dioxide gas, stir to absorb the carbon dioxide gas, and stop ventilation when the pH of the solution reaches 7.5 to obtain a carbon dioxide absorption solution of sodium glycinate.

[0075] Weigh 150g of glycine and dissolve it in a certain amount of water, then add 74g of calcium hydroxide / 106g of calcium hydroxide slag (the calcium hydroxide content in the calcium hydroxide slag is 70%), stir at 100rpm for 40min, filter to obtain a calcium glycinate solution, and then dilute to a volume of 1L Prepare a 1mol / L calcium glycinate solution in the bottle, pour the calcium glycinate solution into a 2000mL beaker, add 9g sodium lignin, then stir and mix for 5 minutes, slowly pour the carbo...

Embodiment 2

[0078] Weigh 75g of glycine to dissolve in a certain amount of water, then add 40g of sodium hydroxide to stir the reaction, and dilute to a 1L volumetric flask to prepare a 1mol / L sodium glycinate solution. Pour the sodium glycinate solution into a three-necked round-bottomed flask, introduce carbon dioxide gas, stir to absorb the carbon dioxide gas, and stop ventilation when the pH of the solution reaches 7.5 to obtain a carbon dioxide absorption solution of sodium glycinate.

[0079] Weigh 150g of glycine and dissolve it in a certain amount of water, then add 74g of calcium hydroxide / 106g of calcium hydroxide slag (the calcium hydroxide content in the calcium hydroxide slag is 70%), stir and react for 40 minutes, filter to obtain the calcium glycinate solution, and then dilute to a 1L volumetric flask , Made into 1mol / L calcium glycinate solution. Pour the calcium glycinate solution into a 2000mL beaker, add 4g E01 styrene-acrylic emulsion (50% solid content), stir and mix for...

Embodiment 3

[0082] Weigh a certain amount of calcium hydroxide, add water to form a slurry with a concentration of 7%-10%, stir and mix well, and control the temperature below 40°C. Then, under stirring, add dropwise E01 styrene-acrylic emulsion (solid content 50%) to the calcium hydroxide slurry. The weight of the drop-wise E01 styrene-acrylic emulsion accounts for 1% of the theoretical mass of calcium carbonate. Stir for 2 minutes, and the temperature is controlled at room temperature. . Finally, carbon dioxide gas was introduced into the calcium hydroxide slurry to which the emulsion was added dropwise, and the carbonization reaction was carried out with stirring. The reaction temperature was 30°C. The reaction was stopped until the pH value of the solution dropped to 7. The obtained precipitate is suction filtered and washed to obtain a modified nano-calcite calcium carbonate paste product, and a powder product is obtained after drying.

[0083] After analysis, the calcium carbonate pr...

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Abstract

The invention relates to a polymer modified nano calcium carbonate novel product series, and specifically provides polymer in-situ modified nano calcium carbonate novel products, wherein the novel products are obtained by adding a water-soluble polymer or a polymer emulsion as a template agent and a modification agent for controlling a crystallization process and reducing the size of single crystals and aggregates; and the invention provides a novel method for synthesizing the modified nano materials which are easy to produce and have low cost. A vaterite-type calcium carbonate product with asingle-crystal particle size of less than 10 nm and a calcite-type calcium carbonate product with a single-crystal particle size of less than 25 nm can be obtained, the particles are uniform, dispersity is good, the use amount of the novel products in a composite material can be remarkably increased, meanwhile, strengthening and toughing are achieved, and performance of the composite material is maintained and improved. The modified vaterite-type calcium carbonate and calcite-type calcium carbonate can simultaneously improve or maintain toughness and strength of the material in the polypropylene composite material under the condition of high addition amount, and a huge application development potential is displayed.

Description

Technical field [0001] The invention belongs to the field of nano material production, and specifically relates to a polymer modified nano calcium carbonate series product and a production method. Background technique [0002] As a new type of ultrafine solid powder material, ultrafine calcium carbonate brings quantum size effect, small size effect, surface effect and macroscopic quantum effect that ordinary calcium carbonate does not have due to its nanometer size. Widely used in plastics, rubber, coatings, sealants, inks, papermaking and other products as fillers, additives, reinforcing agents and brighteners. It has the effects of saving masterbatch, increasing capacity, reducing cost, improving product quality, and increasing product added value. The development of new nano-calcium carbonate products and new production processes with uniform particles, easy dispersion, large addition, good performance, and low production cost has always been the focus of technology research ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/10C01F11/18
CPCC01F11/18C09C1/02C09C3/10
Inventor 尹应武黄剑岚廖翠莺叶李艺吐松赵玉芬
Owner XIAMEN UNIV
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