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Environment-friendly hydrophobic paint

A hydrophobic coating and hydrophobic filler technology, applied in the direction of coating, etc., can solve the problems of coating peeling, economic loss, waste of resources, etc., and achieve the effects of improved stability, wide sources, and good compatibility

Active Publication Date: 2019-07-05
SHENYANG SHUNFENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water-based coatings are popular with the public because of their cheap price, health and environmental protection. However, due to their poor hydrophobicity, water-based coatings easily enter the interior of the coating film and affect the adhesion between the coating film and the substrate. In severe cases, the coating will fall off and cause Waste of resources, economic loss

Method used

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  • Environment-friendly hydrophobic paint
  • Environment-friendly hydrophobic paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 75 ml of distilled water and 75 g of acrylic resin were blended at a speed of 300 r / min and mechanically stirred for 5 min to obtain a common paint.

Embodiment 2

[0027] A method for preparing an environmentally friendly hydrophobic coating, characterized in that the coating is composed of oleanolic acid derivatives connected with elastin polypeptide biomacromolecules through chemical bonds and then compounded with acrylic resin, specifically synthesized Proceed as follows.

[0028] (1) Preparation of hydrophobic filler.

[0029] (a) Add 8 g of oleanolic acid derivatives, 10 g of peptide biomacromolecule powder and 75 ml of ethanol into the three-neck flask under reflux conditions, the temperature is controlled at 15 °C, the speed is 200 r / min, and stirred for 25 min. Lower the temperature to 2 °C, rotate at 300 r / min, and stir for 40 min until the peptide biomacromolecule powder is completely dispersed in the solvent.

[0030] (b) Raise the temperature of the three-neck flask after the reaction in (a) to 20 °C, rotate at 300 r / min, stir for 3 h, add 5 g of NaCl and continue stirring for 15 min to obtain a modified polypeptide hydrogel...

Embodiment 3

[0035] (1) Preparation of hydrophobic filler.

[0036] (a) Add 8 g of oleanolic acid derivatives, 10 g of peptide biomacromolecule powder and 75 ml of ethanol into the three-neck flask under reflux conditions, the temperature is controlled at 15 °C, the speed is 200 r / min, and stirred for 25 min. Lower the temperature to 2 °C, rotate at 300 r / min, and stir for 40 min until the peptide biomacromolecule powder is completely dispersed in the solvent.

[0037] (b) Raise the temperature of the three-neck flask after the reaction in (a) to 20 °C, rotate at 300 r / min, stir for 3 h, add 5 g of NaCl and continue stirring for 15 min to obtain a modified polypeptide hydrogel.

[0038] (c) The modified polypeptide hydrogel was freeze-dried at -20 °C for 9 h. After drying, it is ground in a mortar and sieved into powder with 200 meshes to obtain the hydrophobic filler.

[0039] (2) Preparation of environmentally friendly hydrophobic coatings.

[0040] 2.25 g of the hydrophobic filler pr...

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Abstract

The invention provides a preparation method of environment-friendly hydrophobic paint. The preparation method comprises the following steps that 1, hydrophobic filler is prepared, wherein an oleanolicacid derivative and polypeptide biological macromolecular powder are added into a solvent and stirred to be dissolved, heating is conducted, NaCl is added, modified polypeptide hydrogel is obtained after reaction, and then the polypeptide hydrogel is freeze-dried and ground to obtain the hydrophobic filler; 2, the environment-friendly hydrophobic paint is prepared, wherein the hydrophobic filler,distilled water and acrylic resin are mixed by mass, and the environment-friendly hydrophobic paint is obtained. According to the prepared environment-friendly hydrophobic paint, the oleanolic acid derivative is bound with elastin polypeptide biological macromolecules through chemical bonds, and then compounded with the acrylic resin, and integration is realized through chemical bonding. Comparedwith existing water-based paint, the compatibility is better; meanwhile, natural biological resources serve as the raw materials of the paint, and the paint has the advantages of being free of toxins, harmless, environmentally friendly, wide in source and the like.

Description

technical field [0001] The invention belongs to the field of paint preparation, and in particular relates to a preparation method of an environmentally friendly hydrophobic paint. Background technique [0002] Coatings are an indispensable and important field for the development of my country's national economy. After several generations of hard work and pioneering efforts, my country has become the world's second largest producer and consumer of paint, and has become the mainstay of the world's paint industry. Water-based coatings are popular with the public because of their cheap price, health and environmental protection. However, due to their poor hydrophobicity, water-based coatings easily enter the interior of the coating film and affect the adhesion between the coating film and the substrate. In severe cases, the coating will fall off and cause Waste of resources and economic loss. The preparation of a water-based coating with good hydrophobicity can effectively prev...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D7/65C08H1/00
CPCC08H1/00C09D7/65C09D133/00C08L89/00
Inventor 刘春峰沙世强李娜高萌崔学强
Owner SHENYANG SHUNFENG NEW MATERIAL CO LTD
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