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A kind of surface treatment method of special antibacterial calcium carbonate for papermaking

An antibacterial calcium carbonate and surface treatment technology, applied in papermaking, textile and papermaking, fiber raw material treatment, etc., can solve the problems of uneven distribution of surface treatment agents, calcium carbonate agglomeration, etc., and achieve good antibacterial and bacteriostatic effect and good contact degree. , the effect of improving the binding force and dispersion

Active Publication Date: 2019-11-29
贺州钟山县双文碳酸钙新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to insufficient surface treatment agents or uneven distribution of surface treatment agents on the surface of calcium carbonate, the problem of calcium carbonate agglomeration still exists

Method used

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  • A kind of surface treatment method of special antibacterial calcium carbonate for papermaking

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Effect test

Embodiment 1

[0026] A kind of surface treatment method of antibacterial calcium carbonate special for papermaking, comprises the following steps:

[0027] S1: Add limestone to the pulverizer, pulverize to particle size≤0.4mm, and get calcium carbonate coarse powder:

[0028] S2: add calcium carbonate coarse powder to grinder, and add the first modifying agent that is 3% of calcium carbonate coarse powder, described first modifying agent is the nonylphenol polyoxyethylene that weight ratio is 2:1 Ether phosphate monoester sodium salt and trimethylsilyl clathrate polysilsesquioxane were ground for 1.5 hours at a rotational speed of 1000r / min to obtain calcium carbonate fine powder with a particle size of 500 meshes;

[0029] S3: the calcium carbonate fine powder is delivered to the high-speed mixer, then add the second modifying agent that is 2% of the calcium carbonate coarse powder, and the second modifying agent is composed of sapindus saponins with a weight ratio of 2:1:1 , chitosan and...

Embodiment 2

[0031] A kind of surface treatment method of antibacterial calcium carbonate special for papermaking, comprises the following steps:

[0032] S1: Add limestone to the pulverizer, pulverize to particle size≤0.4mm, and get calcium carbonate coarse powder:

[0033] S2: add calcium carbonate coarse powder to grinder, and add the first modifying agent that is 2.5% of calcium carbonate coarse powder, described first modifying agent is the nonylphenol polyoxyethylene that weight ratio is 1:1 Ether phosphate monoester sodium salt and trimethylsilyl clathrate polysilsesquioxane were ground for 2 hours at a rotational speed of 1200r / min to obtain calcium carbonate fine powder with a particle size of 600 meshes;

[0034] S3: calcium carbonate fine powder is transported to high-speed mixer, then add the second modifying agent that is the 2.5% of calcium carbonate coarse powder, described second modifying agent is by weight ratio 1:1:2 sapinberry saponin , chitosan and potassium N-propyl-...

Embodiment 3

[0036] A kind of surface treatment method of antibacterial calcium carbonate special for papermaking, comprises the following steps:

[0037] S1: Add limestone to the pulverizer, pulverize to particle size≤0.4mm, and get calcium carbonate coarse powder:

[0038] S2: add calcium carbonate coarse powder to grinder, and add the first modifying agent that is 3.5% of calcium carbonate coarse powder, described first modifying agent is the nonylphenol polyoxyethylene that weight ratio is 3:1 Ether phosphate monoester sodium salt and trimethylsilyl clathrate polysilsesquioxane were ground for 1 hour at a rotational speed of 1500r / min to obtain calcium carbonate fine powder with a particle size of 800 meshes;

[0039] S3: the calcium carbonate fine powder is delivered to the high-speed mixer, then add the second modifying agent that is 2.0% of the calcium carbonate coarse powder, and the second modifying agent is composed of sapindus saponin with a weight ratio of 3:1:1 , chitosan and...

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Abstract

The invention discloses a surface treatment method for antibacterial calcium carbonate special for papermaking. The surface treatment method includes the steps that limestone is added into a smashingmachine, smashing is carried out, and calcium-carbonate coarse powder is obtained; the calcium-carbonate coarse powder is added into a grinding machine, first modifying agent is added, grinding is carried out, and calcium-carbonate fine powder is obtained; the calcium-carbonate fine powder is delivered to a high-speed stirring machine, second modifying agent is added, the mixture is stirred at high speed and mixed to be even, drying is carried out, and modified calcium carbonate for papermaking is obtained, wherein the first modifying agent is prepared from nonylphenol polyoxyethylene ether phosphomonoester sodium salt and octakis(trimethylsiloxy)silsesquioxane; the second modifying agent is prepared from sapindus-saponin, chitosan and N-propyl-perfluor octyl sulfamide potassium glutamate.The calcium carbonate obtained through surface modification has good dispersity, hydrophilic oleophylic performance, thixotropy, processing fluidity and bonding adhesive force, and also has good antibacterial bacteriostasis effect, ageing resistance and yellowing resistance, and the antibacterial calcium carbonate can serves as an excellent papermaking filler.

Description

technical field [0001] The invention relates to the technical field of calcium carbonate modification, in particular to a surface treatment method for antibacterial calcium carbonate specially used for papermaking. Background technique [0002] Calcium carbonate is an important inorganic chemical product, which is widely used in rubber, plastic, paper, paint, ink, medicine, cosmetics, food and other industries. However, due to the smaller the particle size of calcium carbonate particles and the more atoms on the surface, the higher the surface energy, the stronger the adsorption, and the mutual agglomeration between the particles; followed by calcium carbonate as an inorganic filler, the surface of the particles is hydrophilic and hydrophobic. Oil has poor affinity with organic polymers and is easy to form aggregates, resulting in internal defects of polymers and poor mechanical properties. In order to improve the filling performance of calcium carbonate, effective technolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/02
CPCC01F11/185D21H17/675
Inventor 唐文易双
Owner 贺州钟山县双文碳酸钙新材料有限公司
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