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A method for in-situ preparation of multiple particle size distribution emulsion

A particle size distribution and emulsion technology, which is used in the field of in-situ preparation of multivariate particle size distribution emulsions, which can solve problems such as compatibility affecting the final emulsion performance.

Inactive Publication Date: 2015-09-02
HUBEI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method completely adopts the method of physical blending, and the compatibility problem affects the performance of the final emulsion to a certain extent; 2. The wide particle size distribution emulsion is prepared by miniemulsion polymerization

Method used

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  • A method for in-situ preparation of multiple particle size distribution emulsion
  • A method for in-situ preparation of multiple particle size distribution emulsion
  • A method for in-situ preparation of multiple particle size distribution emulsion

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Embodiment Construction

[0043] Typical product formulations of the present invention are illustrated below.

[0044] Formula 1: High solid content ternary particle size distribution nitrile emulsion for building waterproofing. The product can be used as a high-solid waterproof adhesive. After the emulsion is applied, the drying speed is greatly improved, which can greatly shorten the construction period, especially in low-temperature and high-humidity weather and indoor underground construction. High solid content waterproof adhesive can completely replace organic solvent-based or solvent-free waterproof coatings. Compared with traditional high-solid content emulsion coatings, the products prepared by this method have the characteristics of high solid content, low viscosity and fast drying speed. Moreover, the construction is convenient and quick, the application is uniform, and the gloss is good.

[0045] Main technical indicators of the product:

[0046] (1) Appearance: white emulsion (2) Solid ...

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Abstract

The invention relates to a method for controlling the solid content and the viscosity of emulsion by effectively controlling emulsion particle components and particle size and distribution in emulsion polymerization. In the method, when a monomer is dripped, an (compound) emulsifier is injected into a system once by stages within a proper temperature range; then the monomer is dripped for nucleation once again; and the emulsion particle size and distribution in the system can be controlled by controlling the times for injecting the (compound) emulsifier once and the concentration of the (compound) emulsifier. The emulsion with (N+1)-variate particle size distribution can be formed by N times of injection, wherein N can be a natural number such as 1, 2, 3 and the like. The method is an effective approach to the in-situ preparation of compound emulsion and the realization of emulsion particle design. Because the method has a simple process and high control efficiency, the method can serve as a common method for industrially preparing the (compound) emulsion with multivariate particle size distribution, high solid content and low viscosity.

Description

technical field [0001] This solution belongs to the patent of invention and relates to polymer emulsion, specifically, it is a method for preparing emulsion with multiple particle size distribution in situ. Background technique [0002] The diversified distribution of particle size is not only an effective means to realize particle design, but also an effective way to prepare special latex products such as high solid content emulsion and composite emulsion. Compared with conventional emulsions, the distribution of multiple particle sizes has obvious advantages in the glossiness of emulsion products and emulsion film formation. Especially in the process of particle design and modification, in-situ compounding of latex particles of different materials can significantly improve material properties. Therefore, the unique properties of multi-component particle size distribution emulsions have attracted widespread attention. It is of great significance in the application of coat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F2/26C08F2/30
Inventor 艾照全邓锐周奇龙
Owner HUBEI UNIV
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