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The dispersion principle of dispersants

Time: 2025-02-05 13:40:04

Author: 赛菲(天津)新材料科技有限责任公司

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Dispersant is an interfacial active agent that possesses both lipophilic and hydrophilic properties within a molecule. It can uniformly disperse solid and liquid particles of inorganic and organic pigments that are difficult to dissolve in liquids, while also preventing particle settling and aggregation, forming amphiphilic reagents required for stable suspensions.

【The stability principle of polymers on solid particles】





Powder particles will automatically adsorb high molecular weight polymers from water, forming a complex dense layer structure that changes the original charge density of the dense layer, increasing attraction and repulsion;



The high polymer barrier between pigment particles is called steric hindrance EsR 



【DLVO Theory】-potential energy curve

Total interaction potential energy(ET)

ET = EA  + ER

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Total interaction potential energy (ET)

ET = EA  + ER + EsR


To obtain a stable dispersed system, it is necessary to modify the compact layer by changing the charge capacity or structure, which can be achieved using dispersants.

→If EsR is negative, it will accelerate flocculation,

The added polymer becomes a flocculant,

→If EsR is positive, it is an effective dispersant,

Enhance dispersion stability.




Various powder dispersion solutions






【Packaging And Storage

10L/25L/50L/220L barrels of this product should be stored in a dry, cool, ventilated, sealed room temperature, away from sources of fire.



What characteristics should dispersants possess


In order to meet the needs of industrial production, dispersants should have the following characteristics:

1. Good dispersibility: Dispersants should be able to effectively disperse pigments and fillers evenly in the medium, preventing particle aggregation.

2. Appropriate compatibility: Dispersants should have good compatibility to ensure that they can fully function in the system.

3. Good thermal stability: Dispersants should have good thermal stability to ensure that they do not decompose or deteriorate during the molding process.

4. Not causing color drift: Dispersants should not cause unnecessary color changes or drift to maintain the stability of product color.

5. Does not affect the performance of the product: The dispersant should not have a negative impact on the performance of the final product to ensure that the quality and performance of    the product meet the requirements.

6. Non toxic: Dispersants should be non-toxic or low toxic to ensure their safety and harmlessness to personnel and the environment during production and application.


The dispersion principle of dispersants
Dispersant is an interfacial active agent that possesses both lipophilic and hydrophilic properties within a molecule. It can uniformly disperse solid and liquid particles of inorganic and organic pigments that are difficult to dissolve in liquids, while also preventing particle settling and aggregation, forming amphiphilic reagents required for stable suspensions.
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    TEL:022-29508668        022-84120378

                      186-2218-6875       133-8993-6728

   ADD:Building A4, Yinkun Future Huizhi Manufacturing Industrial Park, No. 15 Huaming Avenue, Dongli District, Tianjin

WeChat official account

WeChat official account

Tiktok official account

Copyright © 2025 All Rights Reserved Surfy (Tianjin) New Material Technology Co., Ltd. 

Technical support:Yunchuang Chengda      

This site supports  IPv6

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