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Preparation method of nano modified emulsion

A nano-modification and emulsion technology, which is applied in the direction of water-repellent addition, etc., to reduce production costs and improve the effect of sizing

Inactive Publication Date: 2015-03-25
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of existing sizing agents in production cost control, the present invention provides a preparation method of nano-modified emulsion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] The method for preparing nano-modified emulsion:

[0016] 1. Preparation of mixed emulsion: select styrene-butadiene latex, biological latex and nano-calcium carbonate particles as raw materials, and set the solid content mass concentration of the mixed emulsion to 50%. Mix styrene-butadiene latex and bio-latex according to the ratio of mass concentration 4:1, disperse in a high-speed disperser at a speed of 3000 rpm, and disperse for 10 minutes to obtain a mixed emulsion.

[0017] 2. Add 6ml of deionized water and nano-calcium carbonate particles to the mixed emulsion in step 1, wherein the amount of nano-calcium carbonate particles added is 6% of the solid content of the mixed emulsion, continue to disperse for 20 minutes, and add defoamer fatty alcohol alkoxy base compound, and then dispersed for 10 minutes to obtain a nano-modified emulsion.

[0018] 3. After the nano-modified emulsion is prepared, the surface of the paper is sizing, dried, placed at room temperatu...

example 2

[0021] 1. Same as Step 1 of Example 1;

[0022] 2. Add 7ml of deionized water and nano-calcium carbonate particles to the mixed emulsion in step 1, wherein the amount of nano-calcium carbonate particles added is 8% of the solid content of the mixed emulsion, continue to disperse for 20 minutes, and add defoamer fatty alcohol alkoxy base compound, and then dispersed for 10 minutes to obtain a nano-modified emulsion.

[0023] 3. Same as Step 3 of Example 1;

[0024] Measurement results: The degree of sizing is 17.47s, which is 15.80s higher than that of base paper.

example 3

[0026] 1. Same as Step 1 of Example 1;

[0027] 2. Add 8ml of deionized water and nano-calcium carbonate particles to the mixed emulsion in step 1, wherein the amount of nano-calcium carbonate particles added is 10% of the solid content of the mixed emulsion, continue to disperse for 20 minutes, and add defoamer fatty alcohol alkoxy base compound, and then dispersed for 10 minutes to obtain a nano-modified emulsion.

[0028] 3. Same as Step 3 of Example 1;

[0029] Measurement results: The degree of sizing is 13.06s, which is 11.36s higher than that of base paper.

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PUM

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Abstract

The invention discloses a preparation method of a nano modified emulsion. Firstly, styrene-butadiene latex and biological latex are blended in the mass concentration ratio of 4:1 with a blending method, then nano calcium carbonate particles are added and blended, the nano modified emulsion is prepared, and the dosage of nano calcium carbonate is 6%-10% of the mass concentration of the emulsion solid content. The method is simple and easy to implement, and the obtained nanoparticle composite emulsion can significantly increase the sizing degree of paper compared with existing sizing agents.

Description

technical field [0001] The invention relates to the field of papermaking coating, in particular to a preparation method of nano-modified emulsion. Background technique [0002] Improving the performance of paper by surface sizing is one of the important means to improve product quality. Reasonable use of surface sizing agent can not only improve the sizing effect and the surface strength of paper, but also reduce the amount of internal sizing agent, thereby reducing the cost to the greatest extent. Synthetic latex surface sizing agent is a commonly used surface sizing agent, but the price of synthetic latex has been rising continuously in recent years, which has brought huge pressure on the cost of enterprises. As an environment-friendly latex, biological latex also has the function of synthetic latex. It has a good prospect to study biological latex to replace part of synthetic latex. Bio-latex uses starch as the main raw material, which is mainly derived from renewable r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/16
Inventor 高聪姚双全袁月覃程荣牛芬洁
Owner GUANGXI UNIV