Modified raw lacquer composite coating and preparation method thereof

A technology of composite coating and raw lacquer, applied in the field of coatings, can solve the problems of long drying time of raw lacquer, poor metal adhesion, limited application scope, etc., to improve drying time, improve mechanical properties and alkali resistance, and improve compatibility sexual effect

Inactive Publication Date: 2018-12-14
FANCHANG COUNTY NUOMU BUILDING DECORATION ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large amount of phenolic hydroxyl groups contained in urushiol, there are some disadvantages in raw lacquer, such as serious allergic toxicity to the human body. In addition, raw lacquer has a long drying time, high viscosity, difficult construction, poor adhesion to metal, and poor alkali resistance. severely limit its scope of application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A modified raw lacquer composite coating, whose raw materials include lignin, water-based polyurethane, refined raw lacquer, metal ethanol solution, and graphene; wherein, the volume ratio of the water-based polyurethane, raw lacquer and metal ethanol solution is 3:4:1; The weight ratio of said refined raw lacquer and lignin is 15:1;

[0016] Wherein, the metal ethanol solution includes FeCl 3 ethanol solution and SnCl 2 ethanol solution; the FeCl 3 Ethanol solution with 20 wt% FeCl 3 ethanol solution; the SnCl 2 10wt% SnCl in ethanol solution 2 ethanol solution; the FeCl 3 ethanol solution with SnCl 2 The volume ratio of the ethanol solution is 5:1; the weight ratio of the graphene to the water-based polyurethane is 1:100.

[0017] The preparation method of described modified raw lacquer composite coating, comprises the steps:

[0018] Add metal ethanol solution to the refined raw lacquer, stir and react for 40 minutes, add lignin, pressurize and heat, react at...

Embodiment 2

[0020] A modified raw lacquer composite coating whose raw materials include lignin, water-based polyurethane, refined raw lacquer, metal ethanol solution, and graphene; wherein, the volume ratio of the water-based polyurethane, raw lacquer and metal ethanol solution is 2:7:1; The weight ratio of said refined raw lacquer and lignin is 10:1;

[0021] Wherein, the metal ethanol solution includes FeCl 3 ethanol solution and SnCl 2 ethanol solution; the FeCl 3 30 wt% FeCl in ethanol solution 3 ethanol solution; the SnCl 2 5 wt% SnCl in ethanol solution 2 ethanol solution; the FeCl 3 ethanol solution with SnCl 2 The volume ratio of the ethanol solution is 10:3; the weight ratio of the graphene to the water-based polyurethane is 0.3:100.

[0022] The preparation method of described modified raw lacquer composite coating, comprises the steps:

[0023] Add metal ethanol solution to the refined raw lacquer, stir and react for 60 minutes, add lignin, pressurize and heat, react at...

Embodiment 3

[0025] A modified raw lacquer composite coating whose raw materials include lignin, water-based polyurethane, refined raw lacquer, metal ethanol solution, and graphene; wherein, the volume ratio of the water-based polyurethane, raw lacquer and metal ethanol solution is 3:7:1; The weight ratio of said refined raw lacquer and lignin is 12:1;

[0026] Wherein, the metal ethanol solution includes FeCl 3 ethanol solution and SnCl 2 ethanol solution; the FeCl 3 25 wt% FeCl in ethanol 3 ethanol solution; the SnCl 2 8 wt% SnCl in ethanol solution 2 ethanol solution; the FeCl 3 ethanol solution with SnCl 2 The volume ratio of the ethanol solution is 9:2; the weight ratio of the graphene to the water-based polyurethane is 0.7:100.

[0027] The preparation method of described modified raw lacquer composite coating, comprises the steps:

[0028] Add metal ethanol solution to the refined raw lacquer, stir and react for 50 minutes, add lignin, pressurize and heat, react at 60°C for ...

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Abstract

The invention discloses a modified raw lacquer composite coating which comprises the following raw materials: lignin, waterborne polyurethane, refined raw lacquer, a metal ethanol solution and graphene, wherein the volume ratio of waterborne polyurethane to raw lacquer to the metal ethanol solution is 2-3:4-7:1; the weight ratio of the lacquer to lignin is 10-15:1; the invention further disclosesa preparation method for the modified raw lacquer composite coating. The modified raw lacquer composite coating is prepared by taking lignin, waterborne polyurethane, refined raw lacquer, the metal ethanol solution and graphene as raw materials. The drying time of the modified raw lacquer composite coating is shortened obviously, the performance such as the adhesive force and harness thereof is improved obviously, and heat resistance and alkali resistance are good.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a modified raw lacquer composite coating and a preparation method thereof. Background technique [0002] Raw lacquer is the secretion of lacquer tree. It has good properties such as corrosion resistance, abrasion resistance, acid resistance, solvent resistance, heat resistance, good water insulation and insulation, and luster. It is known as the "king of paint" and is a military and industrial equipment. High-quality coatings for , basic construction, handicrafts and civil furniture are also one of the important materials for my country's traditional exports. However, due to the large amount of phenolic hydroxyl groups contained in urushiol, there are some disadvantages in raw lacquer, such as serious allergic toxicity to the human body. In addition, raw lacquer has a long drying time, high viscosity, difficult construction, poor adhesion to metal, and poor alkali resistance. Se...

Claims

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Application Information

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IPC IPC(8): C09D193/00C09D175/04C09D197/00C09D7/61
CPCC08L2201/08C08L2205/03C09D7/61C09D193/00C08L75/04C08L97/005C08K3/00C08K3/042
Inventor操徐阳
OwnerFANCHANG COUNTY NUOMU BUILDING DECORATION ENG CO LTD