Method for improving mechanical stability of super-hydrophobic wood

A mechanically stable and super-hydrophobic technology, applied in impregnated wood, wood impregnation, wood processing appliances, etc., can solve problems such as short service life, poor surface mechanical stability and durability, and poor mechanical properties of hydrophobic surfaces , to achieve the effects of short production cycle, improved mechanical stability and excellent hydrophobic performance

Active Publication Date: 2013-12-18
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing hydrophobic wood preparation techniques, such as utilizing beeswax to process wood, utilizing the surface of wood to generate nano-inorganic particles, etc. generally have defects such as poor mechanical prop

Method used

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  • Method for improving mechanical stability of super-hydrophobic wood
  • Method for improving mechanical stability of super-hydrophobic wood
  • Method for improving mechanical stability of super-hydrophobic wood

Examples

Experimental program
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specific Embodiment approach 1

[0029] Embodiment one: the method for improving the mechanical stability of superhydrophobic wood in this embodiment is realized through the following steps:

[0030] Step 1, the wood is washed with deionized water, absolute ethanol, and deionized water in sequence;

[0031] Step 2, epoxy resin is dissolved in acetone, makes epoxy resin solution;

[0032] Step 3, soaking the treated wood in step 1 in the epoxy resin solution prepared in step 2, and then drying at room temperature;

[0033] Step 4, modify submicron silica with KH550 silane coupling agent, and then disperse in deionized water to obtain modified silica liquid;

[0034] Step 5, immerse the wood treated in step 3 in the modified silica solution obtained in step 4, and dry at room temperature;

[0035] Step 6. Dissolve octadecyltrichlorosilane (OTS) in absolute ethanol to obtain an OTS ethanol solution, and then soak the wood treated in step 4 in the OTS ethanol solution, and then dry it to realize super-hydrophob...

specific Embodiment approach 2

[0039] Embodiment 2: This embodiment differs from Embodiment 1 in that the mass concentration of the epoxy resin solution described in Step 2 is 1%-5%. Other steps and parameters are the same as in the first embodiment.

[0040] The contact angle between superhydrophobic wood and water after treatment by the method of this embodiment is greater than 150°, and the rolling angle is less than 10°; and a stable rough structure-micro-nano secondary structure is formed on the surface of wood, so that the mechanical stability of superhydrophobic wood is greatly improved. improve.

specific Embodiment approach 3

[0041] Embodiment 3: This embodiment is different from Embodiment 1 or 2 in that: the soaking time in step 3 is 0.5h-1.5h, and the drying time is 0.5h-1h. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

[0042]The contact angle between superhydrophobic wood and water after treatment by the method of this embodiment is greater than 150°, and the rolling angle is less than 10°; and a stable rough structure-micro-nano secondary structure is formed on the surface of wood, so that the mechanical stability of superhydrophobic wood is greatly improved. improve.

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Abstract

The invention discloses a method for improving the mechanical stability of super-hydrophobic wood, belonging to the field of super-hydrophobic wood. The super-hydrophobic wood prepared by adopting the method disclosed by the invention overcomes the defects of poor surface mechanical property, short service life and the like of the super-hydrophobic wood prepared by adopting a conventional method, and is improved in durability and good in application prospect. A contact angle between the super-hydrophobic wood and water is more than 150 DEG, and a rolling angle is less than 10 DEG, therefore, the super-hydrophobic wood has excellent hydrophobic property and better self-cleaning property. The method comprises the following steps: soaking wood in epoxy resin to ensure that one layer of epoxy resin is covered on the surface of the wood; then soaking in a silicon dioxide solution grafted with an amino group to ensure that silicon dioxide reacts with epoxy resin so that the silicon dioxide is adhered on the surface of the epoxy resin to form a micro-nano secondary structure; and finally, carrying out hydrophobic modification on the micro-nano secondary structure on the surface of the wood, therefore the super-hydrophobic wood is prepared. The method is used for improving the mechanical stability of the super-hydrophobic wood.

Description

technical field [0001] The invention belongs to the field of superhydrophobic wood; in particular, it relates to a method for improving the mechanical stability of superhydrophobic wood. Background technique [0002] As a traditional material, wood has a wide range of applications in construction, furniture, etc., and plays a great supporting role in human life. Because traditional wood is exposed to water for a long time or placed in a high humidity environment for a long time, it is prone to corrosion, mildew and other phenomena, which greatly reduces the service life of wood and affects the efficiency of wood use. Therefore, the invention of hydrophobic wood has become an urgent need in the field of wood research. Superhydrophobic wood, because the static contact angle of water on its surface is greater than 150°, and the rolling angle is less than 10°, it has good hydrophobic properties, which makes the wood perform well in anti-corrosion, self-cleaning, and prolonging ...

Claims

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Application Information

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IPC IPC(8): B27K3/52B27K3/02C09K3/18
Inventor 王成毓刘峰
Owner NORTHEAST FORESTRY UNIVERSITY
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