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A kind of hydrophobic dispersion material and preparation method thereof

A bulk material, hydrophobic technology, applied in soil conditioning materials, chemical instruments and methods, organic fertilizers, etc., can solve the problems of poor hydrophobic stability of hydrophobic bulk materials, large environmental impact, low compactness, etc., to achieve green Prospects for environmental protection applications, increasing heavy metal content, and cost-effective effects

Active Publication Date: 2022-05-20
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrophobic dispersion material obtained after treatment with silane hydrophobic agents has poor hydrophobic stability; the hydrophobic dispersion material prepared by using beeswax has poor hydrophobicity and low compactness, so it is not suitable for processing powdery clay, Fine-grained soil such as clay is also not conducive to engineering applications; the hydrophobic dispersion material prepared by polysiloxane-modified alkyd resin needs to use a large amount of organic resin and cross-linking agent in the preparation process, which has a great impact on the environment. And it is only suitable for sandy soil without clay, and the hydrophobic effect is very limited when dealing with fine-grained soil such as powder clay and clay, and the hydrophobicity is unstable

Method used

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  • A kind of hydrophobic dispersion material and preparation method thereof
  • A kind of hydrophobic dispersion material and preparation method thereof
  • A kind of hydrophobic dispersion material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of a hydrophobic dispersion material, comprising the steps of:

[0021] 1) Weigh 5000.0g Xiamen ISO standard intermediate sand (GB / T17671-1999 and ISO679:1989, sand particle size is 0.5-1.0mm, quartz content>96%, loss on ignition <0.5%);

[0022] 2) Adopt the wet sieving method to remove obvious organic impurities such as plant roots, fallen leaves, and animal carcasses in the soil;

[0023] 3) The sand of step 2) was placed in a soil aluminum box (200mm in diameter, 150mm in height), put into a hot air circulation oven (DO60, Dengying Instrument Equipment Co., Ltd.) and dried at 105 ° C for 24 hours until the soil was completely dry;

[0024] 4) After taking out the soil aluminum box of step 3) from the oven, stand and cool for 1 hour at normal temperature;

[0025] 5) Add 10.0g of α-tung oleic acid to the sand processed in step 4), and mix for 15 minutes at a speed of 500 rpm in a stainless steel powder mixer (Model 30, Huazhu Environmental Prote...

Embodiment 2

[0029] The difference between Example 2 and Example 1 is that the heating temperature in step 6) of Example 2 is 180°C, and the remaining components and preparation process are the same as those of Example 1, and the finished product of Example 2 of the hydrophobic dispersion material is obtained.

Embodiment 3

[0031] The difference between Example 3 and Example 1 is that the heating temperature in step 6) of Example 3 is 200°C, and the remaining components and preparation process are the same as those in Example 1, and the finished product of Example 3 of the hydrophobic dispersion material is obtained.

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Abstract

The invention belongs to the field of hydrophobic materials, and discloses a hydrophobic powder material and a preparation method thereof. Under the condition of cutting off oxygen, an unsaturated fatty acid containing at least two conjugated unsaturated bonds is used as a hydrophobic agent to combine soil with the hydrophobic agent. Mix and heat to obtain hydrophobic dispersion material. In the present invention, under the condition of isolating oxygen, the hydrophobic agent undergoes thermal polymerization reaction after heating, and the dry oil viscosity of the hydrophobic agent after anaerobic thermal polymerization is high, and it is in a semi-solid-solid state, and can be successfully attached to the surface of soil particles , forming a hydrophobic film, thereby obtaining a hydrophobic dispersion material with stable hydrophobic properties and high hydrophobic properties. In addition, the amount of hydrophobic agent used in the present invention is small, and the source is extensive, low in cost, high in cost performance, degradable, can be naturally degraded after use, and has no biological toxicity, and will not increase the content of heavy metals at the same time, and is environmentally friendly. The prospects are broad.

Description

technical field [0001] The invention belongs to the technical field of hydrophobic materials, and in particular relates to a hydrophobic dispersion material and a preparation method thereof. Background technique [0002] In the preparation of the existing hydrophobic dispersion materials, the soil is often treated with a hydrophobic agent, wherein the commonly used hydrophobic agents include silane-based hydrophobic agents (including but not limited to polysiloxane, dimethyldichlorosilane, etc.), beeswax or the use of Polysiloxane-modified alkyd resin, etc. However, the hydrophobic dispersion materials obtained after being treated with silane hydrophobic agents have poor hydrophobic stability; the hydrophobic dispersion materials prepared by using beeswax have poor hydrophobicity and low compactness, and are not suitable for the treatment of powdered clay, Fine-grained soils such as clay are also not conducive to engineering applications; hydrophobic dispersion materials pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 林宏杰刘建坤常丹刘晓强刘昕
Owner SUN YAT SEN UNIV
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