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Hydrophobic bulk material and preparation method thereof

A bulk material and hydrophobic technology, which is applied in soil conditioning materials, chemical instruments and methods, organic fertilizers, etc., can solve the problems of poor hydrophobic stability of hydrophobic bulk materials, greater environmental impact, unfavorable engineering applications, etc., to achieve green Environmental protection application prospect, increase heavy metal content, effect of less usage

Active Publication Date: 2021-10-15
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Hydrophobic bulk material and preparation method thereof
  • Hydrophobic bulk material and preparation method thereof
  • Hydrophobic bulk material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] A kind of preparation method of hydrophobic dispersion material, comprises the steps:

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

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

[0024] 4) After taking out the soil aluminum box through step 3) from the oven, let it stand for cooling at normal temperature for 1 hour;

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

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 rest of the components and preparation process are the same as in Example 1 to obtain the finished product of Example 2 of the hydrophobic dispersion material.

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 rest of the components and preparation process are the same as 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 bulk material and a preparation method thereof. Under the oxygen isolation condition, unsaturated fatty acid containing at least two conjugated unsaturated bonds serves as a hydrophobic agent, soil and the hydrophobic agent are mixed and heated, and the hydrophobic bulk material can be obtained. Under the condition of oxygen isolation, the hydrophobic agent is subjected to thermal polymerization reaction after being heated, the dry oil of the hydrophobic agent subjected to anaerobic thermal polymerization has high viscosity, is in a semi-solid-solid state, and can be successfully attached to the surfaces of soil particles to form a hydrophobic membrane, so that the hydrophobic bulk material with stable hydrophobic performance and high hydrophobic performance is obtained. In addition, the water repellent agent is small in usage amount, wide in source, low in cost, high in cost performance, degradable, capable of being naturally degraded after being used, free of biotoxicity, free of increase of the content of heavy metal, environmentally friendly and wide in application prospect.

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] The preparation of existing hydrophobic dispersion materials often uses hydrophobic agents to treat the soil. Among them, commonly used hydrophobic agents include silane-based hydrophobic agents (including but not limited to polysiloxane, dimethyldichlorosilane, etc.), beeswax or Polysiloxane-modified alkyd resin, etc. 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 alk...

Claims

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Application Information

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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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