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Water-based hydrophobic slurry as well as preparation method and application thereof

A hydrophobic and water-based technology, applied in the field of water-based hydrophobic slurry and its preparation, can solve problems such as use, and achieve the effects of solving environmental pollution, simple and environmentally friendly preparation, high separation efficiency and flow rate

Active Publication Date: 2021-10-29
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the preparation method of this scheme is simple, and the prepared superhydrophobic coating has good adhesion and good transparency, there is still the problem of using a non-environmentally friendly binder.

Method used

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  • Water-based hydrophobic slurry as well as preparation method and application thereof
  • Water-based hydrophobic slurry as well as preparation method and application thereof
  • Water-based hydrophobic slurry as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The water-based hydrophobic slurry is prepared by the following steps:

[0064] (1) Preparation of silica premix: 100g of nanocellulose liquid prepared from pulp raw materials (2g of cellulose dry weight, the rest is water. The morphology and size of cellulose are as follows: figure 1 As shown, its diameter is 2-24nm, length is 1-15μm) with 10g hexamethyldisilazane modified nano-silica (diameter is 10nm), 4g sodium stearate, monoglyceride and stearin The acid mixture (the mass ratio of sodium stearate, monoglyceride and stearic acid is 1:0.2:1) was mixed in a high-speed shear mode for 12 minutes at a shear rate of 30000 rpm to obtain a silica premix. The prepared silica premix is ​​a paste, and the photo of the silica premix is ​​shown in figure 2 ;

[0065] (2) Preparation of water-based hydrophobic slurry: 100g of nanocellulose liquid (dry weight 2g, the rest is water) and 100g of water are stirred and mixed to obtain a nanocellulose dispersion;

[0066] (3) Mix 1...

Embodiment 2

[0071] The water-based hydrophobic slurry is prepared by the following steps:

[0072] (1) Preparation of silica premix: 100g of nanocellulose liquid prepared from pulp raw materials (2g of cellulose dry weight, the rest is water. The morphology and size of cellulose are as follows: figure 1 As shown, its diameter is 2-24nm, length is 1-15μm) with 10g hexamethyldisilazane modified nano-silica (diameter is 10nm), 4g sodium stearate, monoglyceride and stearin The acid mixture (the mass ratio of sodium stearate, monoglyceride and stearic acid is 1:0.2:1) was mixed in a high-speed shear mode for 12 minutes at a shear rate of 30000 rpm to obtain a silica premix. The prepared silicon dioxide premix is ​​paste;

[0073] (2) Preparation of water-based hydrophobic slurry: 100g of nanocellulose liquid (dry weight 2g, the rest is water) and 100g of water are stirred and mixed to obtain a nanocellulose dispersion;

[0074] (3) 13.25 g (dry weight 1.86 g) of the silica premix prepared in...

Embodiment 3

[0077] The water-based hydrophobic slurry is prepared by the following steps:

[0078](1) Preparation of silica premix: 100g of nanocellulose liquid prepared from pulp raw materials (2g of cellulose dry weight, the rest is water. The morphology and size of cellulose are as follows: figure 1 As shown, its diameter is 2-24nm, length is 1-15μm) with 5g hexamethyldisilazane modified nano silicon dioxide (diameter is 10nm), 2g sodium stearate, monoglyceride and stearin The acid mixture (the mass ratio of sodium stearate, monoglyceride and stearic acid is 1:0.2:1) was mixed in a high-speed shear mode for 12 minutes at a shear rate of 30000 rpm to obtain a silica premix. The prepared silicon dioxide premix is ​​paste;

[0079] (2) Preparation of water-based hydrophobic slurry: 100g of nanocellulose liquid (dry weight 2g, the rest is water) and 100g of water are stirred and mixed to obtain a nanocellulose dispersion;

[0080] (3) 11.41g (dry weight 0.96g) of the silica premix prepar...

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Abstract

The invention discloses water-based hydrophobic slurry as well as a preparation method and an application thereof. The water-based hydrophobic slurry is prepared from silane modified nano cellulose, hydrophobic nano silicon dioxide, stearic acid substances and water. The preparation method comprises the following steps: mixing nano cellulose, hydrophobic nano silicon dioxide and stearic acid substances to obtain a silicon dioxide premix; and mixing the silicon dioxide premix, the nanocellulose dispersion liquid and a silane substance to obtain the water-based hydrophobic slurry. According to the method, the water-based hydrophobic slurry which is uniform in property, efficient, environment-friendly and good in stability can be provided, the method is simple and convenient, the cost is low, and high hydrophobicity and water-oil separation performance can be provided for a base material.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a water-based hydrophobic slurry and its preparation method and application. Background technique [0002] Today's plastic products are widely used, non-degradable, non-recyclable, and serious environmental pollution. However, paper-based materials have the disadvantage of poor hydrophobicity during use, and cannot completely replace plastic products. Therefore, hydrophobic modification of paper-based materials has become an urgent problem to be solved. [0003] In industrial papermaking, the method of adding AKD (alkyl ketene dimer) to the pulp is often used to obtain water resistance, but it cannot achieve super-hydrophobic properties. In the industry, the preparation of super-hydrophobic paper mostly uses styrene-acrylic emulsion compound. Although its degree of hydrophobicity is high, there are problems such as non-degradable main components and environmental pollution, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D101/02C09D7/62C09D7/63D21H19/38D21H19/46D21H19/52D21H21/52D06N3/02D06N3/00D06M15/05D06M11/79D06M13/224B01D17/022D06M13/188
CPCC09D101/02C09D7/62C09D7/63D21H19/385D21H19/46D21H19/52D21H21/52D06N3/02D06N3/0059D06N3/0063D06M15/05D06M11/79D06M13/2243B01D17/02C08K2201/011C08K2201/003D06M2200/12C08K13/06C08K9/06C08K3/36C08K5/098C08K5/103C08K5/09C08K9/08
Inventor 吴敏陈茜黄大勇
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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