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Method for preparing water resistance surface sizing agent emulsion

A technology of surface sizing agent and water resistance, which is applied in the direction of water repellent addition, inorganic compound addition, textiles and paper making, etc. It can solve the problems of unsatisfactory water resistance, inconvenient manufacture of sizing solution, and high temperature dissolution, etc., to achieve Improve the surface strength and internal physical strength performance, feel delicate, reduce the effect of dosage

Inactive Publication Date: 2008-07-02
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional surface sizing process generally uses modified starch supplemented with polyvinyl alcohol (PVA) as sizing chemicals to finish the paper surface, but there are still some defects in the improvement of paper surface strength and other physical properties, and Auxiliary sizing agents such as polyvinyl alcohol need to be dissolved at high temperature, which causes inconvenience in the manufacture of sizing liquid
In recent years, emulsion-type surface sizing agents have been popularized and used in the paper industry, but the effect in improving the water resistance of the finished paper is still not satisfactory

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1: 1) First, take 30 parts of vinyl acetate, 5 parts of butyl acrylate, 2 parts of methyl methacrylate, 0.6 parts of methacrylic acid, 0.2 parts of nonylphenol polyoxygen according to the number of parts by mass Vinyl ether OP-10, 0.6 parts of emulsifier MS-1, 0.3 parts of ammonium persulfate, 0.2 parts of sodium hydrogen phosphate and 60 parts of water;

[0013] 2) Then take 1 / 3 of vinyl acetate, butyl acrylate, methyl methacrylate and all methacrylic acid and mix evenly to make solution A;

[0014] 3) Mix 0.2 parts of nonylphenol polyoxyethylene ether OP-10 and 0.6 parts of emulsifier MS-1 to make an emulsion, and mix 0.3 parts of ammonium persulfate and 0.2 parts of sodium hydrogen phosphate to make an initiator agent; then take the emulsion of 1 / 3 of the total amount, the initiator of 1 / 3 and the water of 1 / 4 to make solution B, add solution A and solution B in the pre-reaction tank, and stir to prepare the pre-emulsion;

[0015] 4) Add the remaining vinyl ...

Embodiment 2

[0017] Embodiment 2: 1) First, take 35 parts of vinyl acetate, 6 parts of butyl acrylate, 3 parts of methyl methacrylate, 0.3 parts of methacrylic acid, 0.3 parts of nonylphenol polyoxygen according to the number of parts by mass Vinyl ether OP-10, 0.8 parts of emulsifier MS-1, 0.2 parts of ammonium persulfate, 0.4 parts of sodium hydrogen phosphate and 80 parts of water;

[0018] 2) Then take 1 / 4 of vinyl acetate, butyl acrylate, methyl methacrylate and all methacrylic acid and mix evenly to make solution A;

[0019] 3) Mix 0.3 parts of nonylphenol polyoxyethylene ether OP-10 and 0.8 parts of emulsifier MS-1 to make an emulsion, and mix 0.2 parts of ammonium persulfate and 0.4 parts of sodium hydrogen phosphate to make an initiator Then take the emulsion of 1 / 4 of the total amount, the initiator of 1 / 4 and the water of 1 / 3 to make solution B, add solution A and solution B in the pre-reaction tank, and stir to prepare the pre-emulsion;

[0020] 4) Add the remaining vinyl acet...

Embodiment 3

[0022] Embodiment 3: 1) First, take 50 parts of vinyl acetate, 4 parts of butyl acrylate, 2.3 parts of methyl methacrylate, 0.5 parts of methacrylic acid, 0.5 parts of nonylphenol polyoxygen by mass parts Vinyl ether OP-10, 1 part of emulsifier MS-1, 0.4 part of ammonium persulfate, 0.3 part of sodium hydrogen phosphate and 70 parts of water;

[0023] 2) Then take 1 / 4 of vinyl acetate, butyl acrylate, methyl methacrylate and all methacrylic acid and mix evenly to make solution A;

[0024] 3) Mix 0.5 parts of nonylphenol polyoxyethylene ether OP-10 and 1 part of emulsifier MS-1 to make an emulsion, and mix 0.4 parts of ammonium persulfate and 0.3 parts of sodium hydrogen phosphate to make an initiator Then take the emulsion of 1 / 4 of the total amount, the initiator of 1 / 3 and the water of 1 / 3 to make solution B, add solution A and solution B in the pre-reaction tank, and stir to prepare the pre-emulsion;

[0025] 4) Add the remaining vinyl acetate, butyl acrylate, methyl metha...

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Abstract

A preparation method of a waterproof surface sizing agent emulsion comprises the following steps of: mixing vinyl acetate, butyl acrylate, methyl methacrylate and methacrylic acid uniformly to obtain solution A; mixing polyoxyethylene nonylphenyl ether and an emulsifying agent uniformly to obtain an emulsion, and mixing ammonium persulfate and sodium hydrogen phosphate uniformly to obtain an initiator; adding the solution A and a solution B into a pre-reaction tank and stirring to obtain a pre-emulsifying solution; stirring vinyl acetate, butyl acrylate, methyl methacrylate, the emulsifying agent and water, increasing temperature and adding the initiator dropwise to obtain a seed emulsion; and mixing the pre-emulsifying solution, the seed emulsion and the initiator and adding pH value to 7.0 to 7.5. The surface sizing agent can be used for surface sizing of paper sheet, which not only can improve the surface strength and the internal physical strength of the paper sheet but also can improve the degree of sizing performance (i.e. waterproof performance) of a paper sheet that is not subjected to internal sizing by a certain degree.

Description

technical field [0001] The invention relates to a preparation method of a sizing agent emulsion, in particular to a preparation method of a water-resistant surface sizing agent emulsion. Background technique [0002] Surface sizing is a necessary production link in the manufacturing process of offset printing book paper, electrostatic copy paper, computer printing paper and other cultural papers, and it is also an important production link in the manufacturing process of some high-grade packaging paper. Through surface sizing operation, on the one hand, it can improve The surface strength properties of paper make it possible to reduce the occurrence of paper defects such as lint and powder in the process of printing and practical application, and at the same time help to improve the internal physical strength properties of paper and optical properties such as whiteness and opacity. The traditional surface sizing process generally uses modified starch supplemented with polyvi...

Claims

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Application Information

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IPC IPC(8): D21H21/16D21H17/14D21H17/06D21H17/66
Inventor 韩卿王利君
Owner SHAANXI UNIV OF SCI & TECH
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