Preparation method of nano calcium carbonate modified composite emulsion for paper coating

A technology of nano-calcium carbonate and composite emulsion, which is applied in the direction of paper coating, paper, coating, etc., and can solve the problem of paper strength decline

Inactive Publication Date: 2017-12-19
ANHUI HONGYANG PACKAGING GRP
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, my country has adopted a large number of waste paper to recycle recycled pulp and straw pulp, and repeated papermaking has caused the strength of paper to decrease.
Although various types of strengt

Method used

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Experimental program
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Embodiment

[0022] A kind of preparation method of nano-calcium carbonate modified composite emulsion for paper coating, it is characterized in that, according to the following

[0023] Steps to proceed:

[0024] a. Surface modification of nano calcium carbonate:

[0025] Add absolute ethanol at a ratio of 1:6 to 0.1 kg of silane coupling agent, stir evenly, add dropwise acetic acid to adjust the pH to 4-5, and magnetically stir for 40 minutes to hydrolyze to obtain a modified modification solution;

[0026] Add absolute ethanol to 3kg of nano-calcium carbonate at a ratio of 1:10, ultrasonically disperse for 20 minutes, add modification solution, raise the temperature to 65-75°C for 2 hours, filter, and wash with absolute ethanol for 3 times to obtain surface-modified nano calcium carbonate;

[0027] b. Grinding and ultrasonic dispersion process of compound antibacterial liquid:

[0028] Add ethanol aqueous solution at 1:10 to 2kg nano-titanium dioxide powder, add 0.01kg sodium hexamet...

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Abstract

The invention discloses a preparation method of a nano calcium carbonate modified composite emulsion for paper coating. The preparation method is characterized by comprising the following steps: adding absolute ethyl alcohol into a silane coupling agent; stirring uniformly; adjusting pH; performing magnetic stirring for hydrolysis to obtain modified liquid; adding absolute ethyl alcohol into nano calcium carbonate; performing ultrasonic dispersion; adding the modified liquid; heating for reacting to obtain surface-modified nano calcium carbonate; adding an ethanol aqueous solution into nano titanium dioxide powder; adding dispersing agents sodium hexametaphosphate and polyethylene glycol; grinding and performing ultrasonic dispersion to obtain nano titanium dioxide dispersion liquid; adding solvents absolute ethyl alcohol and acetic acid into chitosan; stirring for dissolution; uniformly mixing with the nano titanium dioxide dispersion liquid to obtain composite antibacterial liquid; uniformly mixing a styrene-acrylic emulsion, a polyvinyl acetate emulsion and a carboxymethylcellulose solution with the obtained materials to obtain a composite emulsion.

Description

technical field [0001] The invention relates to the field of paper coatings, in particular to a preparation method of nano calcium carbonate modified composite emulsion for paper coatings. Background technique [0002] Decorative paper is a new kind of industrial and household paper. The production of decorative paper is mainly to add all the fillers into the slurry pool and mix with pulp during the papermaking process, and then make it by paper machine. With the enhancement of people's awareness of environmental protection, paper packaging, as a green and environmentally friendly packaging material, has been paid more and more attention by people. In recent years, a large number of waste papers have been recycled in my country to regenerate pulp and straw pulp, and repeated papermaking has caused the strength of paper to decrease. Although various types of strengthening agents are currently used to improve the strength of paper, due to the limitations of the performance of...

Claims

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Application Information

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IPC IPC(8): D21H19/38D21H19/58D21H19/44D21H19/62D21H19/64D21H19/52D21H19/60D21H21/36C09C1/02C09C3/12
CPCC09C1/021C09C3/12D21H19/385D21H19/44D21H19/52D21H19/58D21H19/60D21H19/62D21H19/64D21H21/36
Inventor 王子力朱孔志周光荣张晓伟
Owner ANHUI HONGYANG PACKAGING GRP
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