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Method for preparing Pickering emulsion type alkenyl succinic anhydrides (ASA) papermaking sizing agent

A sizing agent and emulsion type technology, which is applied in the field of paper sizing agent preparation, can solve the problems of large amount of particle components, low ASA emulsion concentration, unfavorable emulsion storage, etc., achieve high sizing performance, increase concentration and Stability, improve the effect of environmental pollution

Inactive Publication Date: 2013-04-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method for preparing Pickering emulsion type alkenyl succinic anhydrides (ASA) papermaking sizing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of inorganic-organic composite nano-solid particle emulsifier: nano-scale sodium chloride modified sodium-based montmorillonite (the original soil was obtained from Lin’an, Zhejiang) and cetyltrimethylammonium chloride (CTAC) according to Mix and disperse in water at a mass ratio of 4:1, stir and react at a constant temperature of 65°C for 1 hour to obtain a suspension; extract the suspension, and wash the solids obtained by the extraction with water repeatedly until no trace is detected in the washing waste liquid. Chloride ion, the solid is dried at 80°C and ground through a 200-mesh sieve, and the sieve residue is the nano-solid emulsifier;

[0026] Preparation of Pickering emulsion type ASA sizing agent: Weigh a certain amount of industrial product octadecenyl succinic anhydride (ODSA, purchased from Kemira Chemicals Company), and disperse the above-prepared nano-solid particle emulsifier and magnesium chloride in a desiccated Stir in deionized water for...

Embodiment 2

[0029] Preparation of inorganic-organic composite nano-solid particle emulsifier: Nano-scale sodium fluoride modified montmorillonite (the original soil was taken from Zibo, Shandong), cetyltrimethylammonium chloride (CTAC) according to 4: Mix and disperse in deionized water at a ratio of 1, heat and stir in a constant temperature water bath at 60°C for 1 hour to obtain a suspension; extract the suspension, and wash the extracted solid with water repeatedly until no Chloride ions, then dry the solid at 105°C and grind through a 200-mesh sieve, and the sieve residue is a nano-solid particle emulsifier;

[0030] Preparation of Pickering emulsion type ASA sizing agent: Weigh a certain amount of industrial grade octadecenyl succinic acid (ODSA, obtained from Shandong Chenming Paper Co., Ltd.), and disperse the above-prepared nano-solid particle emulsifier and magnesium chloride in a Stir in deionized water for 5 minutes to obtain a solid particle emulsifier suspension, the amount ...

Embodiment 3

[0033] Preparation of inorganic-organic composite nano-solid particle emulsifier: Nano-scale sodium-based modified montmorillonite (the original soil was obtained from Liaoning), cetyltrimethylammonium chloride (CTAC) according to the ratio of 4.2:1 Proportionally mixed and dispersed in deionized water, heated and stirred in a constant temperature water bath at 80°C for 2 hours to obtain a suspension; extract the suspension, and wash the solid obtained by the extraction with water repeatedly, until the washing waste liquid is detected to be free of chloride ions Then dry the solid at 105°C and grind it through a 200-mesh sieve, and the sieve residue is a nano-solid particle emulsifier;

[0034] Preparation of Pickering emulsion type ASA sizing agent: Weigh a certain amount of industrial grade octadecenyl succinic acid (ASA, purchased from Kemira Chemicals Co., Ltd.), and disperse the above-mentioned nano-solid particle emulsifier and magnesium sulfate in Stir in deionized wate...

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Abstract

The invention provides a method for preparing Pickering emulsion type alkenyl succinic anhydrides (ASA) papermaking sizing agent. The method comprises the following steps of: intercalating quaternary ammonium salt into nano cation-based modified montmorillonite to prepare nano solid fine grain emulsifier; dispersing the nano solid fine grain emulsifier and magnesium salt into deionized water to form a water phase, mixing the water phase and oil phase ASA, and emulsifying the mixture through high speed shearing to obtain the Pickering emulsion type ASA papermaking sizing agent, wherein the volume ratio of the oil phase to the water phase is (1:1)-(1:6). The Pickering emulsion type ASA papermaking sizing agent is coupled with the emulsion and stabilization characteristics of organic surfaceactive substances and inorganic solid fine grains; compared with the emulsion which is emulsified and stabilized by independently using the surface active substances, the Pickering emulsion type ASA papermaking sizing agent is more stable and higher in sizing efficiency; furthermore, the preparation process is simple, and the ASA can be emulsified into stable emulsion without adding any surfactant and high-molecule polyelectrolyte; and the using amount of the emulsifier is small and the emulsifying cost is low.

Description

technical field [0001] The invention relates to a preparation method of papermaking sizing agent, in particular to a preparation method of Pickering emulsion type ASA papermaking 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. The proportion of alkaline sizing jumped from 15% to over 90%. Since 1989, China has started to use medium and alkaline sizing in production, and it has been...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/16
Inventor 于得海李友明
Owner SOUTH CHINA UNIV OF TECH
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