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Preparation method of needle-like cluster calcium carbonate-silver composite antibacterial material

A compound antibacterial and calcium carbonate technology, which is applied in the direction of botany equipment and methods, fibrous fillers, chemical instruments and methods, etc., can solve the problems of purification and application impact, increase production cost, increase the cost of synthetic calcium carbonate, etc., and achieve production The effect of simple equipment, increased added value, and reduced production costs

Pending Publication Date: 2022-03-25
中科乐美科技集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development of nanotechnology has made people realize that the performance of calcium carbonate mainly depends on the parameters such as the morphology, particle size distribution, chemical composition and surface properties of calcium carbonate products. The development of calcium carbonate technology is a research hotspot in the industry. Research in recent years has shown that calcium carbonate products with unique morphology and properties can be prepared by adding crystal form control agents. However, the introduction of various crystal form control agents increases production costs on the one hand. On the other hand, impurity ions are introduced into calcium carbonate, which affects the purification and application of subsequent products; in addition, some studies use soluble calcium salts as precursors for preparing calcium carbonate, which obviously also increases the cost of synthetic calcium carbonate

Method used

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  • Preparation method of needle-like cluster calcium carbonate-silver composite antibacterial material
  • Preparation method of needle-like cluster calcium carbonate-silver composite antibacterial material

Examples

Experimental program
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Effect test

Embodiment 1

[0018] A preparation method of needle-like cluster calcium carbonate-silver composite antibacterial material, the steps are as follows:

[0019] Step 1: First add 4.2g of calcium oxide and 0.2565g of sucrose into 150mL of water, mix well, and then fully react the mixed solution in a water bath at 100 degrees Celsius for 2 hours;

[0020] Step 2: In a 100°C water bath, feed CO into the solution at a rate of 10mL / min 2 Carbonization obtains calcium carbonate slurry for 2 hours;

[0021] Step 3: Weigh 0.17g of silver nitrate and add it to 50mL of water, stir evenly, add 1mL of concentrated ammonia water dropwise to prepare silver ammonia solution, then add the silver ammonia solution to the above calcium carbonate slurry, stir for 5 hours, and finally filter and wash , drying to obtain calcium carbonate-silver composite antibacterial material, the product is brown.

[0022] figure 1 It is the scanning electron micrograph of the acicular cluster calcium carbonate-silver composi...

Embodiment 2

[0024] A preparation method of needle-like cluster calcium carbonate-silver composite antibacterial material, the steps are as follows:

[0025] Step 1: First add 4.2g of calcium oxide and 0.2565g of sucrose into 150mL of water, mix well, and then fully react the mixed solution in a water bath at 100 degrees Celsius for 2 hours;

[0026] Step 2: In a 100°C water bath, feed CO into the solution at a rate of 10mL / min 2 Carbonization obtains calcium carbonate slurry for 2 hours;

[0027] Step 3: Weigh 0.034g of silver nitrate and add it to 50mL of water, stir evenly, add 0.2mL of concentrated ammonia water dropwise to obtain a silver-ammonia solution, then add the silver-ammonia solution to the above-mentioned calcium carbonate slurry, stir and react for 5 hours, and finally suction filter, Washing, drying obtains calcium carbonate-silver composite antibacterial material, and product is light brown.

Embodiment 3

[0029] A preparation method of needle-like cluster calcium carbonate-silver composite antibacterial material, the steps are as follows:

[0030] Step 1: First add 4.2g of calcium oxide and 0.2565g of sucrose into 150mL of water, mix well, and then fully react the mixed solution in a water bath at 100 degrees Celsius for 2 hours;

[0031] Step 2: In a 100°C water bath, feed CO into the solution at a rate of 10mL / min 2 Carbonization obtains calcium carbonate slurry for 2 hours;

[0032] Step 3: Weigh 0.0085g of silver nitrate and add it to 50mL of water, stir evenly, add 0.05mL of concentrated ammonia water dropwise to obtain a silver-ammonia solution, then add the silver-ammonia solution to the above-mentioned calcium carbonate slurry, stir and react for 5 hours, and finally suction filter, Washing, drying obtains calcium carbonate-silver composite antibacterial material, and product is white.

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Abstract

The invention discloses a preparation method of a needle-like cluster calcium carbonate-silver composite antibacterial material, and belongs to the technical field of antibacterial materials.The preparation method comprises the steps that calcium oxide and a sucrose aqueous solution are fully mixed to be uniform, then the mixed solution is digested for one hour or more in a water bath at the temperature of 100 DEG C, CO2 is introduced for carbonization for two hours or more, and calcium carbonate slurry is obtained; and adding a pre-prepared silver-ammonia solution into the calcium carbonate slurry, stirring and reacting for more than 5 hours, and finally carrying out suction filtration, washing and drying to obtain the calcium carbonate-silver composite antibacterial material. According to the method for preparing the needle-like cluster calcium carbonate-silver composite antibacterial material through step-by-step feeding without changing the reaction container, the reaction product is easy to purify and dry, the powder structure size is uniform, the needle-like cluster morphology and the product color can be adjusted from white to light brown to brown, and the method can be applied to the fields of papermaking filler, plastic modification and the like.

Description

technical field [0001] The invention relates to the technical field of calcium carbonate composite materials, in particular to a preparation method of needle-like cluster calcium carbonate-silver composite antibacterial materials. Background technique [0002] As one of the most widely used inorganic carbonate raw materials in industrial production, calcium carbonate is widely used in building materials as a filler and modifier with excellent performance because of its excellent and unique physical and chemical properties, wide sources and low price. , rubber, plastic, paper, paint, ink, food, medicine and other industries, can improve the wear resistance, gloss, dimensional stability, mechanical properties, processability, thickening and anti-sinking of products, etc., and improve the comprehensive performance of products . With the development of science and technology, the calcium carbonate industry has developed from the initial state of extensive mineral mining and uti...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/06A01N59/16A01N25/08A01P1/00
CPCC09C1/021C09C1/022C09C3/06A01N59/16A01N25/08
Inventor 田兴友孙俊李潇潇王化刘研研张海宝袁云袁丽曹宇翔高丽
Owner 中科乐美科技集团有限公司
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