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Nanometer lignocellulose/graphite-like phase carbon nitride composite material and preparation method thereof, and applications in woodware coating materials

A graphite phase carbon nitride and lignocellulose technology, applied in the field of coatings, can solve the problems of good wear resistance and high hardness of water-based wood paint bombs, and achieve the effects of improving stain resistance, strong weather resistance and weather resistance, and enhanced hardness

Pending Publication Date: 2019-12-13
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the problem that the existing water-based wood paints in the prior art cannot meet the performance requirements of high elastic hardness, good wear resistance, and not easy to crack, the present invention provides a nano-lignocellulose / graphite-like carbon nitride composite material , wood coating and preparation method and application

Method used

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  • Nanometer lignocellulose/graphite-like phase carbon nitride composite material and preparation method thereof, and applications in woodware coating materials
  • Nanometer lignocellulose/graphite-like phase carbon nitride composite material and preparation method thereof, and applications in woodware coating materials

Examples

Experimental program
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Effect test

Embodiment 1

[0062] 1. Preparation of nano-lignocellulose / graphite-like carbon nitride composites

[0063] (1) Preparation of nanometer lignocellulose:

[0064] Add 1g of lignocellulose into 140mL of deionized water, disperse evenly, add 0.02g of 2,2,6,6-tetramethyl-1-piperidine oxidant and 0.3g of sodium bromide, mix evenly to obtain a homogeneous solution , add 14mmol / L sodium hypochlorite solution to trigger the oxidation reaction, adjust the pH to 10-11 with 0.5mol / L KOH solution, react at 30°C for 3h, add 0.5mol / L HCl solution to adjust the pH to 6.8-7.2, centrifuge, Wash to obtain nanometer lignocellulose.

[0065] (2) Prepare the modified nano lignocellulose of core-shell structure:

[0066] In step a, add 3.2 g of polyvinylpyrrolidone and 0.4 g of nano lignocellulose into 100 mL of deionized water, and disperse evenly to obtain the first mixed dispersion;

[0067] Step b, 20gFeCl 3 ·6H 2 O was dissolved in 120 mL of deionized water to obtain a ferric chloride solution, and at ...

Embodiment 2

[0081] 1. Preparation of nano-lignocellulose / graphite-like carbon nitride composites

[0082] (1) Preparation of nanometer lignocellulose:

[0083] Add 3g of lignocellulose into 130mL of deionized water, disperse evenly, add 0.04g of 2,2,6,6-tetramethyl-1-piperidine oxidant and 0.2g of sodium bromide, mix evenly to obtain a homogeneous solution , add 10mmol / L sodium hypochlorite solution to trigger the oxidation reaction, adjust the pH to 10-11 with 0.7mol / L KOH solution, react at 25°C for 4h, add 0.7mol / L HCl solution to adjust the pH to 6.8-7.2, centrifuge, Wash to obtain nanometer lignocellulose.

[0084] (2) Prepare the modified nano lignocellulose of core-shell structure:

[0085] In step a, add 6 g of polyvinylpyrrolidone and 0.6 g of nano lignocellulose into 100 mL of deionized water, and disperse evenly to obtain the first mixed dispersion;

[0086] Step b, 30gFeCl 3 ·6H 2 O was dissolved in 80 mL of deionized water to obtain a ferric chloride solution, and the fe...

Embodiment 3

[0096] 1. Preparation of nano-lignocellulose / graphite-like carbon nitride composites

[0097] (1) Preparation of nanometer lignocellulose:

[0098] Add 2g of lignocellulose into 160mL of deionized water, disperse evenly, add 0.01g of 2,2,6,6-tetramethyl-1-piperidine oxidant and 0.1g of sodium bromide, mix evenly to obtain a homogeneous solution , add 12mmol / L sodium hypochlorite solution to trigger the oxidation reaction, adjust the pH to 10-11 with 0.3mol / L KOH solution, react at 20°C for 5h, add 0.3mol / L HCl solution to adjust the pH to 6.8-7.2, centrifuge, Wash to obtain nanometer lignocellulose.

[0099] (2) Prepare the modified nano lignocellulose of core-shell structure:

[0100] In step a, add 4.5g of polyvinylpyrrolidone and 0.5g of nano lignocellulose into 100mL of deionized water, and disperse evenly to obtain the first mixed dispersion;

[0101] Step b, 25gFeCl 3 ·6H 2 O was dissolved in 100 mL of deionized water to obtain a ferric chloride solution, and the fe...

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Abstract

The invention discloses a nanometer lignocellulose / graphite-like phase carbon nitride composite material and a preparation method thereof, and applications in woodware coating materials, wherein nanometer lignocellulose is intercalated between the lamellas of graphite-like phase carbon nitride, and a mass ratio of the nanometer lignocellulose to the graphite-like phase carbon nitride is 1.5-4:1. According to the present invention, with the application of the nanometer lignocellulose / graphite-like phase carbon nitride composite material in a woodware coating material, the hardness, the toughness, the adhesion, the ultraviolet resistance and the scratch resistance of the coating material can be greatly enhanced, the coating material can have excellent permeation effect, a semi-continuous film structure can be formed on the surface of the wood, the optimal water content of the wood is rapidly adjusted by matching with the breathing of the wood, the extension and contraction of the wood isborne, the cracking of a paint film is avoided, the long-term protective coating is formed on outdoor wood structure landscapes, the coating has extremely high weather resistance, and the material isparticularly suitable for medium-high-end wood house villas, wood landscapes and the like, and has wide application prospects and development potential.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a nano lignocellulose / graphite-like phase carbon nitride composite material, wood coatings, a preparation method and application. Background technique [0002] Wood paint refers to a type of resin paint used on wood products, including polyester, polyurethane paint, etc., which can be divided into water-based wood paint and oil-based wood paint. Water-based wood lacquer uses water as a solvent without any harmful volatilization. It is currently the safest and most environmentally friendly furniture lacquer coating, so it has received extensive attention. However, compared with oil-based wood lacquers, water-based wood lacquers have poor performance, and have the problems of soft paint film, low hardness, poor wear resistance and easy cracking. [0003] In the prior art, in order to modify water-based wood paint, nano-oxide materials are usually added to the paint. These nanopar...

Claims

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Application Information

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IPC IPC(8): C08L39/06C08L97/02C08L79/04C08K3/28C08K7/00C09D175/14C09D5/18C09D5/16C09D5/14C09D7/65C09D7/61
CPCC08L39/06C09D175/14C09D5/18C09D5/1687C09D5/14C08L2205/03C08L2205/035C08L2201/02C08L97/02C08L79/04C08K3/28C08K7/00
Inventor 马利纳王洁楚会来程璐
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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