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Preparation method of high-weather-resistance Maya blue dye

A high weather resistance, blue dye technology, applied in organic dyes, energy wastewater treatment, etc., can solve the problems of dye molecule escape and fading, and achieve the effects of good compatibility, low production cost and convenient operation

Active Publication Date: 2020-12-15
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the preparation of Maya blue-like dyes mainly enters the pores of attapulgite through the thermal movement or adsorption of dye molecules, but if the dye molecules escape under the action of high temperature or solvent, fading occurs

Method used

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  • Preparation method of high-weather-resistance Maya blue dye
  • Preparation method of high-weather-resistance Maya blue dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0021] First, the organic dye molecule indigo and attapulgite with a particle size of 50 nm were uniformly mixed (the mass ratio of indigo to attapulgite was 1:10), and placed in an oven at 150 °C for 24 h, and the Maya blue-like organic / Inorganic hybrid dyes; graft RAFT agent CPADB on the surface of Maya blue organic / inorganic hybrid dyes subsequently, and the composite material grafted with RAFT agent is dispersed in ethanol / water mixed solvent (the mass ratio of water and ethanol is 100: 20), add vinyl monomer methyl methacrylate with a mass ratio of 200:200:1, crosslinking agent trimethylolpropane trimethacrylate and RAFT polymerization catalyst Shuhong Y, under light irradiation Surface-initiated RAFT cross-linking polymerization for 12 h, centrifuged, washed and vacuum-dried for 24 h to obtain a Mayan blue-like organic / attapulgite hybrid dye modified by the cross-linked polymer. The appearance of the prepared Maya blue-indigo dye is as follows figure 1 . The weather r...

Embodiment approach 2

[0023] Firstly, the organic dye molecule methyl violet and attapulgite with a particle size of 100 nm were evenly mixed (the mass ratio of methyl violet to attapulgite was 1:20), and put in an oven at 150 °C for 36 h, and then prepared a kind of Maya blue organic / inorganic hybrid dye; then graft RAFT agent CPADB on the surface of Maya blue-like organic / inorganic hybrid dye, and disperse the composite material grafted with RAFT agent in ethanol / water mixed solvent (the quality of water and ethanol ratio of 100:10), adding vinyl monomer styrene with a mass ratio of 200:100:1, crosslinking agent trimethylolpropane trimethacrylate and RAFT catalyst fluorescein, under light irradiation Surface-initiated RAFT cross-linking polymerization for 16 h, centrifuged, washed and vacuum-dried for 24 h to obtain a Mayan blue-like organic / attapulgite hybrid dye modified by the cross-linked polymer. The weather resistance, water resistance, abrasion resistance and stability parameters of the pr...

Embodiment approach 3

[0025] First, the organic dye molecule isatin and attapulgite with a particle size of 100 nm were evenly mixed (the mass ratio of isatin to attapulgite was 1:12, put in an oven at 130 °C for 48 h, and the Mayan blue-like organic substance was prepared by high-temperature baking method. / inorganic hybrid dye; then graft RAFT agent CPADB on the surface of Maya blue-like organic / inorganic hybrid dye, and disperse the composite material grafted with RAFT agent in ethanol / water mixed solvent (the mass ratio of water and ethanol is 100 :20), adding vinyl monomer methyl acrylate with a mass ratio of 200:200:1, crosslinking agent trimethylolpropane trimethacrylate and RAFT catalyst red Y, the surface triggers under light irradiation RAFT cross-linking polymerization 14 h, centrifugation, washing and vacuum drying 24 h to obtain the Maya blue organic / attapulgite hybrid dye modified by the cross-linked polymer. The prepared Maya blue-isatin dye appearance is as follows figure 2 . The ...

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Abstract

The invention relates to the field of chemical engineering, and discloses a preparation method of a high-weather-resistance Maya blue dye, which comprises the following steps: S1, uniformly mixing dyemolecules with attapulgite, and baking in an oven at 100-200 DEG C for 24-48 hours to prepare a Maya blue-like organic / inorganic hybrid dye; S2, grafting a reversible addition-fragmentation chain transfer reagent on the surface of the Maya blue-like organic / inorganic hybrid dye to obtain a composite material; and S3, dispersing the composite material in an ethanol / water mixed solvent, adding a vinyl monomer, a cross-linking agent and an RAFT polymerization catalyst, initiating RAFT polymerization on the surface for 10-16 hours under light irradiation, centrifuging, washing, and carrying out vacuum drying for 24 hours to obtain cross-linked polymer modified Maya blue-like organic / attapulgite hybrid dye. The dye prepared by the invention has double effects of coloring and reinforcing, and has excellent weather resistance and good compatibility with polymers; and the preparation process is simple and feasible, low in production cost and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of deep processing of natural nano non-metallic minerals and preparation of related new materials, and in particular relates to a preparation method of a Mayan blue-like dye with high weather resistance, in particular to a preparation of Mayan blue-like dyes with attapulgite, organic dye molecules and polymers dye method. Background technique [0002] Combine organic dyes with inorganic materials to develop organic / inorganic hybrid dyes with excellent performance, which not only abandons the toxicity of some heavy metal inorganic dyes, but also gives full play to the advantages of organic pigments such as complete color spectrum and strong coloring power. Maya blue is the earliest artificially synthesized organic-inorganic hybrid dye. It has the property of not fading after thousands of years of wind and rain. Boiling water, high concentration of acid and alkali, and various organic solvents cannot destroy i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F220/14C08F222/14C08F212/08C08F2/48C09B67/22C09B67/08
CPCC08F292/00C08F2/48C09B67/0033C09B67/0013C08F2438/03C08F220/14C08F222/103C08F212/08Y02W10/37
Inventor 高晓燕倪伶俐姜孝武陆晓庆蒋睿雯蔡鹏陈静
Owner HUAIYIN INSTITUTE OF TECHNOLOGY