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The Preparation and Research of the Glue Particles for Single Cross-Linked Water-Borne Multicolor Coatings

Author: QianYun
Tutor: JiJing
School: Beijing University of Chemical Technology
Course: Materials Science and Engineering
Keywords: Colorful gel particles Suspension dispersant Dispersion Gels Protection of plastic Structural characterization
CLC: TQ630.7
Type: Master's thesis
Year: 2010
Downloads: 215
Quote: 1
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Abstract


This article prepared by the interaction of macromolecular gelling agent and a crosslinking agent for aqueous Imitate coating of the gel particles, and the suspension formed by the suspension dispersant and protective gum dispersion medium system to be modified on the gel particles, and the suspension dispersant on the effect and mechanism of protection of plastic and formed composite architecture. Dispersed phase and dispersion medium influencing factors, discussed in detail the different types of gels, the ratio and the amount of granulation performance. Characterization by XRD, laser particle size analyzer, infrared analysis and UV analysis means to study the dispersion medium suspension dispersant and its concentration on the structure of the protective plastic material, and further study of this dispersion of colloidal concentration Further the impact on the color of the gel particles. The results showed that: 1, the viscosity of the dispersed phase and the dispersing medium forming the preliminary conditions of the initial gel particles, and the viscosity of the dispersed phase can be adjusted through a cellulose dosage. 2, different gel systems have a significant effect on the gel particles and the coating properties of the formed. Simply using Gel, i.e. gel system 1, the gel particles prepared in high strength, less prone to bleeding phenomenon. Simply use the PVO, gel system, low particle intensity, easy color mixing phenomenon. The combined use of both gels (gel system 3), and when both (Gel / PVO) ratio is 1:1 and 2:1, can be made to better overall performance Imitate coatings. Important factors, suspended dispersion medium is to improve the impermeability of the gel particles and to improve coating process performance. Its main group is divided into the dispersant (Dispe) and protection of plastic (Inorg.). Wherein the relative proportion of the amount of the dispersant and its protection rubber protection rubber material structure and the physical properties of the dispersion medium formed has a significant impact. When the concentration of dispersant Dispe of 0.5-0.58%, the protective gum Inorg.l concentration of 5%, or concentration of 1 Dispe, the protective gum Inorg.4 concentration of 10%, i.e. the proportion of the dispersing agent and protective plastic around 1:10 suspended dispersion medium in the crystal structure of the complex crystal plane spacing is small, made of a dispersion medium solution Zeta potential minimum; The ratio, and to change the concentration of the protective gum, found: With the increase of the concentration of the protective gum suspension dispersion medium composite lattice spacing first decreases and then increases, the average particle diameter of the prepared suspension in a dispersion medium solution presents an increasing trend. 4, dispersing agents and protective gum ratio is about 1:10, the effect of the the Imitate coatings prepared. Infrared analysis showed that: dispersant Dispe. Protection glue Inorg. Strong hydrogen bonds between.

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