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Hyperbranched polymer delustering agent as well as preparation method and application thereof

A technology of hyperbranched polymers and matting agents, which is applied in the direction of coating, etc., can solve the problem of single functionalization, achieve the effect of avoiding agglomeration and improving the matting effect

Pending Publication Date: 2022-06-28
HUNAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a kind of hyperbranched polymer matting agent aiming at the shortage of single functionalization of existing matting agents in coatings.

Method used

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  • Hyperbranched polymer delustering agent as well as preparation method and application thereof
  • Hyperbranched polymer delustering agent as well as preparation method and application thereof
  • Hyperbranched polymer delustering agent as well as preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0054] The preparation method of the hyperbranched polyester with carboxyl at the end is:

[0055] Trimellitic anhydride and ethylene glycol were added to the three-necked flask, stirred and heated to 120 °C for 3 h, and then the solvent was distilled off under reduced pressure to obtain a pale yellow solid C. 11 H 10 O 7 In the three-necked flask, add trimellitic anhydride, C 11 H 10 O 7 , stirred and heated to 120 °C for 3 h, and then the solvent was distilled off under reduced pressure to obtain a hyperbranched polyester with a carboxyl group at the end.

Embodiment 1

[0057] The present embodiment provides a flame-retardant matting agent, and the preparation steps include:

[0058] S1. 1 g of sodium-based montmorillonite was mechanically stirred at high speed in 2000 g of water for 2 h, and ultrasonically treated for 0.5 h to obtain a sodium-based montmorillonite lamellar dispersion with a wafer thickness of 0.9-5 μm in the aqueous dispersion.

[0059] S2. Add 1 g of hexa-p-carboxyphenoxy cyclotriphosphazene (HCPCP) to the micron-level montmorillonite sheet dispersion in step S1, stir and mix at a high speed, heat up to 80-100 ° C, and react for 2 hours to make peeling off The hydroxyl groups on the montmorillonite sheets are completely esterified with the carboxyl groups of the hyperbranched polymer and form hydrogen bonds. The finished product is placed in a drying oven and dried at 60 °C for 12 hours to construct a montmorillonite composite hyperbranched polymer. material microspheres, that is, a matting agent with flame retardancy.

Embodiment 2

[0061] The present embodiment provides a matting agent with flame retardancy and antibacterial properties, and the preparation steps include:

[0062] S1. 1 g of sodium-based montmorillonite was mechanically stirred at high speed in 2000 g of water for 2 h, and ultrasonically treated for 0.5 h to obtain a sodium-based montmorillonite lamellar dispersion with a wafer thickness of 0.9-5 μm in the aqueous dispersion.

[0063] S2. Add 1 g of hexa-p-carboxyphenoxy cyclotriphosphazene (HCPCP) to the micron-level montmorillonite sheet dispersion in step S1, stir and mix at a high speed, heat up to 80-100 ° C, and react for 2 hours to make peeling off The hydroxyl group on the montmorillonite sheet layer completely undergoes esterification reaction with the carboxyl group of the hyperbranched polymer and forms a hydrogen bond to construct a montmorillonite composite hyperbranched polymer microsphere, that is, a matting agent with flame retardancy.

[0064] S3. Add 2 mmol / L nano-silver...

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Abstract

The invention discloses a hyperbranched polymer delustering agent and a preparation method and application thereof.The preparation method comprises the steps that natural clay of a lamellar structure serves as a raw material and is evenly mixed with a hyperbranched polymer with carboxyl at the end group, heating is conducted, so that hydroxyl on a stripped clay lamellar layer and carboxyl of the hyperbranched polymer completely form hydrogen bonds or are subjected to an esterification reaction, and the hyperbranched polymer delustering agent is obtained; the clay composite hyperbranched polymer microspheres are constructed by utilizing the three-dimensional characteristics of the hyperbranched polymer, and the matting agent with a flame-retardant effect is obtained by combining the flame retardance of the clay. In addition, nano antibacterial particles can be added to construct microspheres carrying the antibacterial particles, so that the delustering agent has a good antibacterial effect, and the problem of single function of the existing delustering agent is solved.

Description

technical field [0001] The present invention relates to a multifunctional matting agent and the technical field of preparation of the matting agent, and more particularly, to a hyperbranched polymer matting agent and a preparation method and application thereof. Background technique [0002] At present, the main types of matting agents are silicon dioxide, titanium dioxide, inorganic fillers, metal soaps, synthetic polymer waxes, and self-matting polymer resins. These matting agents have their own advantages in matting. As disclosed in CN101659796, a preparation method of a calcined diatomite matting agent uses diatomite with a mass percentage of silicon dioxide greater than 85% by weight as a raw material, and adds 2% to 4% by weight of diatomite NaCl, diatomite 6 ~8wt% starch is pulverized by calcination at 850-950°C and jet pulverization technology to obtain the final product, which is applied to the styrene-acrylic emulsion and pure acrylic emulsion waterborne coating sy...

Claims

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Application Information

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IPC IPC(8): C08G83/00C09D7/42
CPCC08G83/001C09D7/42
Inventor 赖登旺刘丽李玉华庞景明吴昊彭来湖戴志锋万昌江刘跃军杨军
Owner HUNAN UNIV OF TECH
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