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Inorganic silver-impregnated antibiotic zeolite microparticles retention agent, method of producing the same and applications

A silver-loaded antibacterial and particle retention technology, applied in inorganic compound addition, textile and papermaking, fiber raw material processing, etc., can solve the problems of poor antibacterial effect, uneven distribution, and low retention efficiency of antibacterial agents. Simple preparation process, good uniformity, good retention and drainage performance

Inactive Publication Date: 2010-10-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in practical application, the inorganic antibacterial agent added is very little, and it is mixed in the filler, and the distribution may not be uniform. If the retention aid does not work, it may cause poor antibacterial effect and make the antibacterial agent retention efficiency low.

Method used

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  • Inorganic silver-impregnated antibiotic zeolite microparticles retention agent, method of producing the same and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: be the AgNO of 0.20mol / l with hematilite and concentration 3 Reaction, the reaction solid-liquid ratio is 0.8g / 10ml, the reaction temperature is 60°C, the reaction pH value is 6.5, and the reaction time is 2.5 hours. The chemical composition of the stilbene used is mainly SiO 2 and Al 2 o 3 , followed by CaO. SiO in single crystal 2 +Al 2 o 3 Content is 72.89wt%, SiO 2 and Al 2 o 3 The molar ratio is 7.1, the CaO is 8.80wt%, and there is also a very small amount of K 2 O, Na 2 O. The crystal chemical formula is (K 0.017 Na 0.042 Ca 1.13 ) 1.189 [Al 1.997 Si 7.05 o 18 ]·6.75H 2 O. Then wash with deionized water, use a centrifuge to centrifuge at 3000r / min for 20 minutes, pour off the supernatant, and repeat the washing until the supernatant is tested by sodium chloride solution without white precipitation, and then the resulting modified The zeolite was dried at 105°C for 4 hours, and then ground to a particle size of 500 mesh. When in...

Embodiment 2

[0023] Embodiment 2: be the AgNO of 0.15mol / l with hematilite and concentration 3 Reaction, the reaction solid-liquid ratio is 1g / 10ml, the reaction temperature is 70°C, the reaction pH value is 6.5, and the reaction time is 1.5 hours. Then wash with deionized water, use a centrifuge to centrifuge at 3000r / min for 20 minutes, pour off the supernatant, and repeat the washing until the supernatant is tested by sodium chloride solution without white precipitation, and then the resulting modified The zeolite was dried at 105°C for 5 hours, and then ground to 500 mesh. When in use, add cationic polyacrylamide with a molecular weight of about 7.5 million before the pressure screen, the dosage is 0.40kg / t, and then add inorganic silver-loaded antibacterial zeolite particulate retention agent to the head box, the dosage is 0.8kg / t, the dosage is 0.8kg / t. The silver-loaded content of the antibacterial particulate retention aid reaches 3.6%, the retention rate when used reaches 96.8% (...

Embodiment 3

[0024] Embodiment 3: be the AgNO of 0.30mol / l with hematilite and concentration 3 Reaction, the reaction solid-liquid ratio is 1.2g / 10ml, the reaction temperature is 60°C, the reaction pH value is 7.0, and the reaction time is 3.0 hours. Then wash with deionized water, use a centrifuge at 3500r / min, centrifuge for 15 minutes, pour off the supernatant, and repeat the washing until the supernatant is tested by sodium chloride solution without white precipitation, and then the resulting modified The zeolite was dried at 110°C for 5 hours, and then ground to 400 mesh. When in use, add cationic polyacrylamide with a molecular weight of about 7 million before the pressure screen, the dosage is 0.20kg / t, and then add inorganic silver-loaded antibacterial zeolite particle retention agent in the headbox, the dosage is 1.2kg / t, the The silver-loaded content of the antibacterial particle retention aid reaches 4.0%, the retention rate reaches 97.2% (200 mesh) when used, and the antibacte...

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Abstract

The invention discloses an inorganic silver-carrying antimicrobial zeolite particulate retention aid and a preparation method thereof. With the invention, the red stilbite is used as the raw material. With the liquid-phase ion exchange method and under the condition that the reaction time is 1.5 to 3.0 hours, the solid and liquid ratio is 0.8 to 1.2g / 10ml, the reaction temperature is 60 to 80 centigrade degrees, the pH value is 6.0 to 8.0, and the AgNO3 concentration is 0.1 to 0.3 mol / l, the high-content silver ions are loaded, washed with the deion water, centrifugated, dried and ground to manufacture the inorganic silver-carrying antimicrobial zeolite particulate retention aid used for paper making with the weight percentage of 3.0 to 5.5 percent. The inorganic silver-carrying antimicrobial zeolite particulate retention aid used for paper making is characterized in that the retention aid promotes the filling retention ratio and the water filtration speed, effectively improves the paper evenness and is human-friendly and antimicrobial.

Description

technical field [0001] The invention relates to a novel microparticle retention aid, in particular to the preparation and application method of the inorganic silver-loaded antibacterial zeolite microparticle retention aid. Background technique [0002] With the development of the economy and the improvement of living standards, people have put forward new requirements for some household paper and industrial paper, and bacteria resistance is one of them. Adding or compounding one or several specific antibacterial ingredients to make antibacterial materials, or introduce antibacterial groups into materials in other ways to obtain antibacterial properties, such as antibacterial plastics, antibacterial synthetic fibers, antibacterial stainless steel , Antibacterial ceramics, etc., are widely used. Antibacterial agents can be broadly classified into organic antibacterial agents and inorganic antibacterial agents. Inorganic antibacterial agents mainly refer to preparations in wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H17/69D21H21/36D21H23/28
Inventor 杨飞陈克复杨仁党李军
Owner SOUTH CHINA UNIV OF TECH
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