Preparation method for garden outdoor preservative wood

A kind of preservative wood and outdoor technology, which is applied in the field of preparation of garden outdoor preservative wood, can solve the problems that chemical preservatives cannot be completely fixed, water and soil pollution, anti-corrosion performance is not durable, etc., to overcome easy cracking, wet expansion and shrinkage The effect of reducing the phenomenon and reducing the water absorption rate

Active Publication Date: 2016-12-14
珠海经济特区园海绿化工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problems to be solved by the present invention are: for the traditional preservative wood in the process of preparation and use, the chemical preservative used cannot be completely fixed in the wood, and it is easy to lose water and soil pollution, the anti-corrosion performance is not durable, and the service life is limited To solve the problem, a method for preparing outdoor antiseptic wood for gardens is provided. The invention uses cheap and easy-to-obtain poplar as a raw material, and after natural air-drying, it is soaked in tetrabutyl titanate ethanol solution to make the cells absorb the solution, and the temperature is programmed to rise During the carbonization process, the nutrients inside the wood are carbonized, ethanol volatilizes, and tetrabutyl titanate is hydrolyzed into titanium dioxide, which is dispersed in the wood fiber as an antibacterial component. Soak and thaw the solution to fully enter the interior of the wood fiber, and then fumigate with high-pressure ammonia gas to form magnesium salt whiskers inside the wood fiber to achieve the purpose of enhancing the strength of the wood, and finally dry to obtain the garden outdoor anti-corrosion wood

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Cut 3 poplars with a size of 220cm×8cm×8cm, and place them in a dark and ventilated place until the moisture content of the poplars is 10%, then put the poplars in the water tank, and fix the poplars to the bottom of the water tank with iron wires. Inject the ethanol solution with a concentration of 0.1mol / L tetrabutyl titanate into the water tank until the poplar is completely submerged, and soak for 3 days; In an oven, dry at 50°C for 36h, and then put the dried poplar wood in a vacuum high-temperature oven, pump the relative vacuum in the vacuum high-temperature oven to -0.02MPa, and then program the temperature at a rate of 3°C / min to 100°C, heat preservation and pressure reaction for 30 minutes, continue to heat up to 180°C at a rate of 6°C / min, heat preservation and pressure reaction for 2 hours, wait for natural cooling to room temperature, take out poplar wood, and obtain pretreated poplar wood; pretreated poplar wood obtained above Put the wood in the water tan...

example 2

[0022] Cut 4 poplars with a size of 220cm×8cm×8cm, and place them in a dark and ventilated place until the moisture content of the poplars is 12%, then put the poplars in the water tank, and fix the poplars to the bottom of the water tank with wire. Inject the ethanol solution with a concentration of 0.2mol / L tetrabutyl titanate into the water tank until the poplar is completely submerged, and soak for 4 days; In an oven, dry at 52°C for 40 hours, and then put the dried poplar wood in a vacuum high-temperature oven, evacuate the relative vacuum in the vacuum high-temperature oven to -0.03MPa, and then program the temperature at a rate of 4°C / min to 110°C, heat preservation and pressure reaction for 40 minutes, continue to heat up to 190°C at a rate of 7°C / min, heat preservation and pressure reaction for 3 hours, wait for natural cooling to room temperature, take out poplar wood, and obtain pretreated poplar wood; pretreated poplar wood obtained above Put the wood in the water ...

example 3

[0025] Cut 5 poplars with a size of 220cm×8cm×8cm, and place them in a light-proof and ventilated place until the moisture content of the poplars is 15%, then put the poplars in the water tank, and fix the poplars to the bottom of the water tank with wire. Then inject a 0.3 mol / L tetrabutyl titanate ethanol solution into the water tank until the poplar is completely submerged, and soak for 5 days; In an oven, dry at 55°C for 48 hours, then put the dried poplar wood in a vacuum high-temperature oven, evacuate the relative vacuum in the vacuum high-temperature oven to -0.04MPa, and then program the temperature at a rate of 5°C / min to 120°C, heat preservation and pressure reaction for 45 minutes, continue to heat up to 200°C at a rate of 8°C / min, heat preservation and pressure reaction for 4 hours, wait for natural cooling to room temperature, take out poplar wood, and obtain pretreated poplar wood; pretreated poplar wood obtained above Put the wood in the water tank, fix it at t...

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PUM

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Abstract

The invention discloses a preparation method for garden outdoor preservative wood and belongs to the technical field of garden greening. The preparation method comprises the steps that poplar which is cheap and easy to get serves as a raw material, and the poplar is soaked with a tetrabutyl titanate ethanol solution after being naturally dried in the air, so that the solution is absorbed by cells, in the program warming and carbonization processes, nutritional components inside the poplar are carbonized, ethanol is volatilized, and tetrabutyl titanate is hydrolyzed into titanium dioxide which serves as an antibiotic component and is dispersed into wood fibers; the pretreated poplar is then soaked with magnesium sulfate and subjected to liquid nitrogen freezing and soaking unfreezing, so that the solution fully enters the wood fibers; the poplar is then fumigated with high-pressure ammonia, so that magnesium salt crystal whiskers are formed inside the wood fibers, and the purpose of improving the wood strength is achieved; and the garden outdoor preservative wood is finally obtained through drying. The garden outdoor preservative wood obtained through the preparation method is free of pollution to water and soil in the using process, excellent in preservative performance and capable of effectively resisting encroachment of fungi, bacteria and moths, is a safe, natural and environment-friendly preservative and moth-proof building material and can be widely applied and popularized.

Description

technical field [0001] The invention discloses a method for preparing outdoor antiseptic wood for gardens, and belongs to the technical field of landscaping. Background technique [0002] Modern society pursues a life of fashion, sense of rhythm, and simplicity, so the garden landscape should converge with the times. A natural, ecological, and elegant landscape-preservative wood is a new and widely used landscape material, and is more and more respected and loved by people. Anti-corrosion wood technology is developed along with the chemical industry. As the name suggests, the wood is anti-corrosion, waterproof, and ant-proof wood. It is to pass the screened solid wood through a closed pressure anti-corrosion tank, and press the preservative into the interior of the wood with vacuum force. An outdoor preservative wood. [0003] As people's requirements for returning to nature and improving the quality of life are getting higher and higher, anti-corrosion wood has become the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/34B27K3/16B27K5/04B27K3/04B27K5/00B27M1/06
CPCB27K3/04B27K3/16B27K3/34B27K5/001B27K5/04B27K2240/20B27M1/06
Inventor 董晓许洪祥
Owner 珠海经济特区园海绿化工程有限公司
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