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Modified precipitated calcium carbonate prepared by crosslinking konjac gum on surface through organic boron, preparation method and application thereof and paper

A technology of precipitating calcium carbonate and cross-linking modification, applied in chemical instruments and methods, dyeing low-molecular-weight organic compound treatment, dyeing high-molecular-weight organic compound treatment, etc. Uniform, retention-improving effect

Active Publication Date: 2017-05-31
WUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are many studies on the modification of calcium carbonate fillers in papermaking, and the modification technology is relatively mature in theory, and the application effect of modified calcium carbonate in papermaking is also good, but there are not many technologies applied in industrial production.

Method used

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  • Modified precipitated calcium carbonate prepared by crosslinking konjac gum on surface through organic boron, preparation method and application thereof and paper
  • Modified precipitated calcium carbonate prepared by crosslinking konjac gum on surface through organic boron, preparation method and application thereof and paper
  • Modified precipitated calcium carbonate prepared by crosslinking konjac gum on surface through organic boron, preparation method and application thereof and paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Step 1: Add 1% (relative to the amount of PCC added) konjac gum into the oblique three mouths containing 90g of water, heat up to 50°C, stir and disperse at 400rpm, and then add 10g of PCC;

[0067] Step 2: Add 4% (relative to the amount of PCC added) triethanolamine borate into the reactor, and stir for 60 minutes;

[0068] Step 3: collecting the reaction product by centrifugation and washing and drying it;

[0069] Step 4: Grind MPCC and PCC finely with a mortar, pass through a 200-mesh copper mesh, analyze and characterize them with a scanning electron microscope, Fourier transform infrared spectrometer, elemental analyzer, etc. respectively.

[0070] The Magna IR 560 Fourier Transform Infrared Spectrometer produced by Nicolet Company of the United States was used for measurement, and the scanning range was 400 to 4000 cm -1 , scanning speed 40 times / min. The KBr tablet method is used to prepare the sample. Take an appropriate amount of the powder to be tested and ...

Embodiment 2

[0082] Step 1: Add 1% (relative to the amount of PCC added) konjac gum into the oblique three mouths containing 90g of water, heat up to 50°C, stir and disperse at 400rpm, and then add 10g of PCC;

[0083] Step 2: Add 4% (relative to the amount of PCC added) triethanolamine borate into the reactor, and stir for 60 minutes;

[0084] Step 3: collecting the reaction product by centrifugation and washing and drying it;

[0085] Step 4: Thaw the bleached kraft pulp soaked in water for more than 4 hours with a standard deflaker, use a beater to beat to 37°SR, add MPCC and PCC respectively after appropriate dilution, and the filling amount is 20% (based on the dry pulp amount ); refer to the GB / T3703-1999 method, papermaking in a sheet former; after pressing for 1 min at a pressure of 0.4 MPa in a hydraulic press, dry in a dryer at 97°C for 5 min, and the quantitative value of the hand-sheet is 70 g / m 2 ;

[0086] Step 5: After drying the two hand-sheets obtained in Step 4, take a ...

Embodiment 3

[0089] Step 1: Add konjac gum to the three oblique mouths containing 90g of water, heat up to 80°C, stir and disperse at 400rpm, then add 10g of PCC; the amount of konjac gum is as follows Figure 8-Figure 11 As shown, its dosage is respectively: 0.5%, 1%, 1.25%, 1.75%, 2%, 3%, 4%, 5%, 6%, 7% (relative to the amount of PCC added);

[0090] Step 2: Add 10% (relative to the amount of PCC added) triethanolamine borate into the reactor, and stir for 60 minutes;

[0091] Step 3: collecting the reaction product by centrifugation and washing and drying it;

[0092] Step 4: Decompose the bleached kraft pulp soaked in water for more than 4 hours with a standard decomposer, use a beater to beat to 37°SR, add MPCC after appropriate dilution, and the filling amount is 20% (based on the dry pulp volume); refer to According to the method of GB / T3703-1999, the paper is made in a sheet forming machine; after pressing for 1 min at a pressure of 0.4 MPa in a hydraulic press, it is dried in a d...

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Abstract

The invention provides modified precipitated calcium carbonate prepared by crosslinking konjac gum on the surface through organic boron. The surface of modified precipitated calcium carbonate is crosslinked with the konjac gum through the organic boron. The invention aims to provide modified precipitated calcium carbonate which can significantly improve the tensile index, the burst index and the tear index of paper and the one-way retention rate of a filler when being applied to the filler in the paper. The invention further provides a preparation method and application of modified precipitated calcium carbonate. In addition, the invention further provides the paper containing modified precipitated calcium carbonate.

Description

technical field [0001] The invention relates to the field of paper-making filler modification, in particular to konjac gum organic boron surface cross-linked modified precipitated calcium carbonate, a preparation method, an application thereof and a paper. Background technique [0002] At present, the most commonly used fillers in the paper industry are calcium carbonate (ground calcium carbonate, precipitated calcium carbonate), kaolin and talcum powder. These three types of fillers account for 80% to 90% of the total filler usage. Among them, the paper industry in North America is dominated by kaolin. Calcium carbonate is the main product, while talcum powder is the main product in Asia. In addition, it also includes titanium dioxide, zinc sulfide, calcium sulfate, diatomaceous earth, barium sulfate, aluminosilicate, calcium silicate and some organic fillers. Since the 1970s, as the production of high-grade paper has changed from acidic to neutral or alkaline, calcium car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/69C09C1/02C09C3/08C09C3/10
CPCC09C1/021C09C3/006C09C3/08C09C3/10D21H17/69
Inventor 谢玮刘振华
Owner WUZHOU UNIV
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