Long-acting mildew-proof processing method for bamboos

A processing method, bamboo technology, applied in wood processing equipment, wood treatment, impregnated wood, etc., can solve the problems of poor dispersion ability of inorganic nanoparticles, many reaction steps, unfriendly environment, etc., to overcome poor adhesion, easy Effect of operation, long-lasting antimicrobial properties

Active Publication Date: 2019-02-22
INT CENT FOR BAMBOO & RATTAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dispersibility of inorganic nanoparticles in oil is poor. At present, the surface of inorganic nanoparticles is modified by grafting stearic acid, lactic acid, oleic acid, etc. or using silane coupling agents to improve the dispersibility of nanoparticles in oil. The disadvantage of this kind of method is that there are many reaction steps, the cost is high, and it is possible to use organic solvents that are not friendly to the environment, etc.

Method used

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  • Long-acting mildew-proof processing method for bamboos
  • Long-acting mildew-proof processing method for bamboos
  • Long-acting mildew-proof processing method for bamboos

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Bamboo drying: Take moso bamboo as an example, first process it into bamboo blocks with a thickness of 20mm*20mm*6mm, and dry the bamboo until the moisture content is below 5%;

[0034] (2) Preparation of nanoparticles: Disperse 0.6g of cetyltrimethylammonium bromide and 1.8mL (2mol / L) NaOH solution in 300mL deionized water, and add 1.8mL (1mol / L) formaldehyde solution to heat Stir for 5-20min, then dropwise add 6mL of AgNO 3 (0.1 mol / L) solution, 3.2 mL of tetraethyl orthosilicate and 12 mL of ethyl acetate, aged at 80°C for 2 hours, centrifuged, washed repeatedly, and dried for later use;

[0035] (3) Nanoparticles are miscible in oil: 1 g of core-shell SiO 2 The @Ag nanoparticles were added to 100g of tung oil, and the ball mill was stirred at a speed of 400rpm for 5h by the physical method of a planetary ball mill;

[0036] (4) Impregnation treatment: the bamboo is completely immersed in SiO 2 In the mixed solution of @Ag-tung oil, under normal temperature en...

Embodiment 2

[0040] (1) Bamboo drying: Take moso bamboo as an example, first process it into bamboo blocks with a thickness of 20mm*20mm*6mm, and dry the bamboo until the moisture content is below 5%;

[0041] (2) Preparation of nanoparticles: Disperse 0.6g of cetyltrimethylammonium bromide and 1.8mL (2mol / L) NaOH solution in 300mL deionized water, and add 1.8mL (1mol / L) formaldehyde solution to heat Stir for 5-20min, then dropwise add 6mL of AgNO 3 (0.1 mol / L) solution, 3.2 mL of tetraethyl orthosilicate and 12 mL of ethyl acetate, aged at 80°C for 2 hours, centrifuged, washed repeatedly, and dried for later use;

[0042] (3) Nanoparticles are miscible in oil: 5g core-shell SiO 2 The @Ag nanoparticles were added to 100g of tung oil, and the ball mill was stirred at a speed of 400rpm for 5h by the physical method of a planetary ball mill;

[0043] (4) Impregnation treatment: the bamboo is completely immersed in SiO 2 In the mixed solution of @Ag-tung oil, under normal temperature enviro...

Embodiment 3

[0047] (1) Bamboo drying: Take moso bamboo as an example, first process it into bamboo blocks with a thickness of 20mm*20mm*6mm, and dry the bamboo until the moisture content is below 5%;

[0048] (2) Preparation of nanoparticles: Disperse 0.6g of cetyltrimethylammonium bromide and 1.8mL (2mol / L) NaOH solution in 300mL deionized water, and add 1.8mL (1mol / L) formaldehyde solution to heat Stir for 5-20min, then dropwise add 6mL of AgNO 3 (0.1 mol / L) solution, 3.2 mL of tetraethyl orthosilicate and 12 mL of ethyl acetate, aged at 80°C for 2 hours, centrifuged, washed repeatedly, and dried for later use;

[0049] (3) Nanoparticles are miscible in oil: 10g core-shell SiO 2 The @Ag nanoparticles were added to 100g of tung oil, and the ball mill was stirred at a speed of 400rpm for 5h by the physical method of a planetary ball mill;

[0050] (4) Impregnation treatment: the bamboo is completely immersed in SiO 2 In the mixed solution of @Ag-tung oil, under normal temperature envir...

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Abstract

The invention discloses a long-acting mildew-proof processing method for bamboos. The long-acting mildew-proof processing method comprises the following steps of uniformly mixing the oil and the SiO2@Ag nano-particles with the core-shell structure by adopting a physical ball milling method, and then adopting a vacuum impregnation method to enable the modified SiO2@Ag nano-particles to enter the bamboo material. The processing method is environment-friendly and easy to operate, the mildew-proof and antibacterial properties of the bamboo can and the wear resistance are improved, the defects thatthe nano-particles are poor in adhesive force on the surface of the bamboo wood, easy to lose and the like are effectively overcome, and meanwhile, the cost is low and the environment-friendly effectis achieved. By adopting the physical ball milling method, the problem of uniform and stable dispersion of the nano particles in oil can be effectively solved, compared with a nano-particle surface modification process, the long-acting mildew-proof processing method is easier to operate and is beneficial to industrial large-scale production.

Description

technical field [0001] The invention belongs to the technical field of biomass material processing, and in particular relates to a processing method of organic-inorganic composite modified bamboo, in particular to a processing method for anti-mildew and antibacterial of bamboo. Background technique [0002] my country is rich in bamboo resources. Bamboo has the advantages of renewability, short growth cycle, high strength-to-weight ratio, and strong processability. However, because the original bamboo is rich in starch and other nutrients, it is easy to mildew and decay, and the untreated original bamboo has a service life of only 2-5 years. Therefore, the anti-mildew modification of the original bamboo is necessary for the popularization and application of the original bamboo. [0003] At present, the long-term and effective anti-mildew and anti-corrosion treatment methods for bamboo mostly use chemical methods, which not only have a great impact on the environment during ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/00B27K3/02B27K3/52B27K5/04B27K9/00C01B33/18B82Y40/00
CPCB27K3/007B27K3/0214B27K3/025B27K3/52B27K5/04B27K9/002B27K2240/20B82Y40/00C01B33/18C01P2004/01C01P2004/64
Inventor 费本华唐彤陈秀芳张波
Owner INT CENT FOR BAMBOO & RATTAN
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