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A kind of processing method of long-acting mildew-resistant and wear-resistant bamboo

A processing method and bamboo technology, which can be used in wood processing utensils, wood impregnation, manufacturing tools, etc., can solve the problems of poor dispersion ability of inorganic nanoparticles, many reaction steps, unfriendly environment, etc. Operation, effect of long-lasting antibacterial properties

Active Publication Date: 2020-09-25
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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  • A kind of processing method of long-acting mildew-resistant and wear-resistant bamboo
  • A kind of processing method of long-acting mildew-resistant and wear-resistant bamboo
  • A kind of processing method of long-acting mildew-resistant and wear-resistant bamboo

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 to a moisture content of less than 5%;

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

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

[0036] (4) Impregnation treatment: completely immerse the bamboo in SiO 2 @Ag-tung oil mixed solution, under normal temperature environment, vacuum impregnation for 3h;

[0037] (5) Surface tr...

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 to a moisture content of less than 5%;

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

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

[0043] (4) Impregnation treatment: completely immerse the bamboo in SiO 2 @Ag-tung oil mixed solution, under normal temperature environment, vacuum impregnation for 3h;

[0044] (5) ...

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 to a moisture content of less than 5%;

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

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

[0050] (4) Impregnation treatment: completely immerse the bamboo in SiO 2 @Ag-tung oil mixed solution, under normal temperature environment, vacuum impregnation for 3h;

[0051] (5)...

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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 of anti-mildew and antibacterial bamboo. Background technique [0002] my country is rich in bamboo resources. Bamboo has the advantages of regeneration, short growth cycle, high strength-to-weight ratio, and strong processability, and is widely used. For example, raw bamboo is widely used as building materials, transportation materials, and engineering materials. However, because raw bamboo is rich in nutrients such as starch and is prone to mildew and decay, the service life of untreated raw bamboo is only 2-5 years. Therefore, the anti-mildew modification of raw bamboo is necessary for the popularization and application of raw bamboo. [0003] At present, the long-term and effective anti-mold and anti-corrosion treatment methods for bamboo m...

Claims

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Application Information

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Patent Type & Authority Patents(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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