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Preparation method of solid particle emulsified and stabilized papermaking sizing agent

A solid particle, emulsified stable technology, applied in papermaking, textiles, papermaking, paper, etc., can solve the problems of low concentration of ASA emulsion, large amount of particle components added, serious hydrolysis of ASA, etc., to improve sizing performance and high application rate Adhesive performance, enhance the effect of stability

Inactive Publication Date: 2015-07-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adverse effects brought by the surfactant cannot be completely avoided, and the addition of the particle component is too large, the concentration of the prepared ASA emulsion is very low, which is not conducive to the storage of the emulsion, and the hydrolysis of ASA is serious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Disperse nano-bentonite (sodium-based bentonite, Zhejiang Sanding Technology Co., Ltd.) with a particle size of 50nm in deionized water, stir evenly, and obtain a water suspension with a mass percentage of bentonite of 1%, adjust with 0.1mol / L hydrochloric acid solution The pH value of the aqueous suspension reaches 7, and after uniform stirring, a well-dispersed bentonite aqueous suspension without precipitation is obtained. The solid paraffin is heated to a liquid oil body at 65°C, then mixed with hexadecenyl succinic anhydride, and then stirred evenly at 65°C to obtain a mixed sizing oil with a mass percentage of solid paraffin of 3%. The bentonite aqueous suspension is mixed with the mixed sizing oil according to the volume ratio of 1:2, and the mixture is mixed with a high-speed shear emulsifier (FLUKO / FM20 high-speed shear emulsifier, Shanghai Fluke Fluid Machinery Manufacturing Co., Ltd.) at 5000 rpm Emulsify under the shear speed of / minute 5 minutes, make the ...

Embodiment 2

[0023] Nano-bentonite (sodium carbonate modified sodium bentonite, provided by Zhejiang Sanding Technology Co., Ltd.) with a particle size of 100nm was dispersed in deionized water, and stirred evenly to obtain a water suspension with a mass percentage of bentonite of 2%. L of dilute acetic acid solution to adjust the pH value of the aqueous suspension to 8, and stir well to obtain a well-dispersed bentonite aqueous suspension without precipitation. The solid paraffin is heated to a liquid oil body at 80°C, then mixed with octadecenyl succinic anhydride, and stirred evenly at 70°C to obtain a mixed sizing oil with a mass percentage of solid paraffin of 5%. The bentonite aqueous suspension and the mixed sizing oil were mixed according to the volume ratio of 1:1, and the mixture was mixed with a high-speed shear emulsifier (FLUKO / FM30 high-speed shear emulsifier, Shanghai Fluke Fluid Machinery Manufacturing Co., Ltd.) at 6000 rpm emulsified for 5 minutes at a shear rate of 1 min...

Embodiment 3

[0026] Nano-bentonite (sodium carbonate-modified sodium-based bentonite, original soil obtained from Zibo, Shandong, provided by Shandong Tongli Chemical Co., Ltd.) with a particle size of 250nm was dispersed in deionized water and stirred evenly to obtain bentonite with a mass percentage of 3%. For the water suspension, adjust the pH value of the water suspension to 9 with 0.1mol / L acetic acid solution, and stir well to obtain a well-dispersed bentonite water suspension without precipitation. Heating solid paraffin to liquid oil body at 100°C, mixed anhydride with octadecenyl succinic anhydride (by mass percentage, 65% octadecenyl succinic anhydride, 25% nonadecenyl succinic anhydride anhydride, 10% eicosenyl succinic anhydride), and then stirred evenly at 75° C. to obtain a mixed sizing oil with a mass percentage of solid paraffin wax of 7%. The bentonite aqueous suspension and the mixed sizing oil were mixed according to the volume ratio of 1:3, and the mixture was mixed wi...

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Abstract

The invention discloses a preparation method of a solid particle emulsified and stabilized papermaking sizing agent. The method includes: dispersing nano-bentonite solid particles with a single particle diameter of 25nm-800nm in deionized water, and stirring them evenly to obtain a suspension solution; heating solid paraffin to a liquid oil phase, then mixing it with alkenyl succinic anhydride, and stirring them evenly at 65DEG C-90DEG C, thus obtaining a mixed sizing oil fluid; mixing the sizing oil fluid with the suspension solution according to a volume ratio of 1:7-3:1, and emulsifying the mixture so as to obtain a solid particle emulsified and stabilized papermaking sizing agent emulsion. The papermaking sizing agent emulsion has higher sizing efficiency. Also, the preparation process involved in the invention is simple, and the alkenyl succinic anhydride can be emulsified into a stable emulsion without adding any surfactant and high polymer polyelectrolyte. The emulsifying agent dosage is small, the emulsification cost is low, and environmental pollution is little.

Description

technical field [0001] The invention relates to a preparation method of a paper-making sizing agent, in particular to a preparation method of a solid particle emulsification-stabilized paper-making sizing agent. Background technique [0002] In the 20th century, the papermaking industry shifted from the acidic papermaking system to the medium-alkaline papermaking system, which was an innovative change in the papermaking process. It greatly improved the quality of paper and expanded the range of fillers, reduced pulp consumption and energy consumption, reduced environmental pollution, and extended the service life of equipment. service life. According to statistics, in the early 1980s in Europe, the cultural paper produced by medium and alkaline sizing accounted for 60% to 65% of the total cultural paper, and it reached 95% in the 1990s. Alkaline sizing ratio jumped from 15% to over 90%. Since 1989, China has started to use medium and alkaline sizing in production, and it h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/16D21H17/68D21H17/60D21H17/14
Inventor 于得海林兆云李友明
Owner SOUTH CHINA UNIV OF TECH
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