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Surface treatment method for antibacterial calcium carbonate special for papermaking

An antibacterial calcium carbonate, surface treatment technology, applied in calcium carbonate/strontium/barium, papermaking, textiles and papermaking, etc., can solve problems such as uneven distribution of surface treatment agents, calcium carbonate agglomeration, etc., and achieve good antibacterial and antibacterial effects. The effect of good contact degree, smoothness and gloss improvement

Active Publication Date: 2018-09-11
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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  • Surface treatment method for antibacterial calcium carbonate special for papermaking

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A surface treatment method for special antibacterial calcium carbonate for papermaking includes the following steps:

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

[0028] S2: Add the coarse calcium carbonate powder to the grinder, and add the first modifier that is 3% of the coarse calcium carbonate powder, and the first modifier is composed of nonylphenol polyoxyethylene with a weight ratio of 2:1 It is composed of ether phosphate monoester sodium salt and trimethylsilyl cage polysilsesquioxane, milled at a speed of 1000r / min for 1.5h to obtain calcium carbonate fine powder with a particle size of 500 mesh;

[0029] S3: Transport the fine calcium carbonate powder to a high-speed mixer, and then add a second modifier that is 2% of the coarse calcium carbonate powder. The second modifier is composed of sapindus saponin with a weight ratio of 2:1:1 , Chitosan and potassium N-propyl-perfluorooctyl...

Embodiment 2

[0031] A surface treatment method for special antibacterial calcium carbonate for papermaking includes the following steps:

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

[0033] S2: The coarse calcium carbonate powder is added to the grinder, and 2.5% of the coarse calcium carbonate powder is added as a first modifier composed of nonylphenol polyoxyethylene in a weight ratio of 1:1 It is composed of ether phosphate monoester sodium salt and trimethylsilyl cage polysilsesquioxane, milled at a speed of 1200r / min for 2h to obtain calcium carbonate fine powder with a particle size of 600 mesh;

[0034] S3: Transport the fine calcium carbonate powder to a high-speed mixer, and then add a second modifier 2.5% of the coarse calcium carbonate powder. The second modifier is made up of sapindus saponin with a weight ratio of 1:1:2. , Chitosan and potassium N-propyl-perfluorooctylsulfonamide glutamate, stirred a...

Embodiment 3

[0036] A surface treatment method for special antibacterial calcium carbonate for papermaking includes the following steps:

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

[0038] S2: The coarse calcium carbonate powder is added to the grinder, and 3.5% of the coarse calcium carbonate powder is added as the first modifier, which is composed of nonylphenol polyoxyethylene with a weight ratio of 3:1 It is composed of ether phosphate monoester sodium salt and trimethylsilyl cage polysilsesquioxane. It is ground at a speed of 1500r / min for 1h to obtain a fine powder of calcium carbonate with a particle size of 800 mesh;

[0039] S3: Transport the fine calcium carbonate powder to a high-speed mixer, and then add a second modifier that is 2.0% of the coarse calcium carbonate powder, and the second modifier is composed of Sapindus saponin with a weight ratio of 3:1:1 , Chitosan and potassium N-propyl-perfluoro...

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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 of antibacterial calcium carbonate special for papermaking. Background technique [0002] Calcium carbonate is an important inorganic chemical product, which is widely used in rubber, plastic, paper, coating, ink, medicine, cosmetics, food and other industries. However, because the particle size of calcium carbonate particles is smaller and the number of atoms on the surface is greater, the surface energy is higher, the adsorption effect is stronger, and the particles are agglomerated with each other; secondly, calcium carbonate is an inorganic filler, and the surface of the particles is hydrophilic and sparse. Oil has poor affinity with organic polymers and is easy to form aggregates, causing internal defects in polymers and poor mechanical properties. In order to improve the filling performance of calcium carbonate, effective proces...

Claims

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Application Information

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IPC IPC(8): C01F11/18D21H17/67
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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