Plant-based wood micro-capsule preservative and preparation method thereof

A preservative, plant-based technology, used in wood treatment, wood impregnation, wood impregnation, etc., can solve problems such as fixation and stability effects, and achieve the effect of enhancing corrosion resistance, improving physical properties, and improving stability.

Inactive Publication Date: 2017-06-30
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although many studies have shown that plant essential oils and plant extracts have good corrosion resistance, their fixation and stability are greatly affected under water-soluble conditions.

Method used

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  • Plant-based wood micro-capsule preservative and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Preparation of Neem Seed Extract Solution

[0043] 1) Choose fresh seeds grown on Neem (Melia azederach) trees, wash them with water, dry them in the shade, grind them in a grinder, and put them into an ultrasonic vibration extractor (Beijing Heng Aode Instrument Co., Ltd., model HNS-SY-150) );

[0044] 2) Add an aqueous ethanol solution to the beaker to heat and extract the Neem seeds. The ratio of the volume of the added ethanol aqueous solution to the weight of the Neem seeds is 3:1, that is, the weight (dry weight) of the Neem seeds is 1g, then the ethanol aqueous solution If the volume of Neem is 3ml or Neem seed weight (dry weight) is 1kg, the volume of the ethanol aqueous solution is 3L, the extraction time is 2.5h, and the extraction temperature is 55℃;

[0045] 3) After the mixture in the extractor is cooled, filter it with a Buchner funnel to remove Neem seeds to obtain Neem seed filtrate;

[0046] 4) After the filtrate is evaporated to remove the solvent, a neem ...

Embodiment 2

[0051] 1. Preparation of Neem Seed Extract Solution

[0052] 1) Select fresh seeds grown on Neem (Melia azederach) trees, wash them with water, dry them in the shade, grind them in a grinder, and put them in an ultrasonic vibration extractor;

[0053] 2) Add ethanol aqueous solution to the extractor to heat and extract Neem seeds. The ratio of the volume of the added ethanol aqueous solution to the weight of neem seeds is 4:1, that is, the weight of neem seeds (dry weight) 1g, then ethanol The volume of the aqueous solution is 4ml or the weight of neem seeds (dry weight) is 1kg, then the volume of the ethanol aqueous solution is 4L, the extraction time is 2h, and the extraction temperature is 30℃;

[0054] 3) After the mixture in the extractor is cooled, filter it to remove neem seeds to obtain neem seed filtrate;

[0055] 4) The filtrate is evaporated to remove the solvent to prepare an aqueous solution of neem seed extract, wherein the mass percentage concentration of the neem seed ...

Embodiment 3

[0060] 1. Preparation of Neem Seed Extract Solution

[0061] 1) Select fresh seeds grown on Neem (Melia azederach) trees, wash them with water, dry them in the shade, grind them in a grinder, and put them in an ultrasonic vibration extractor;

[0062] 2) Add the ethanol aqueous solution to the extractor to heat and extract the neem seeds. The ratio of the volume of the added ethanol aqueous solution to the weight of the neem seeds is 2:1, that is, the weight of neem seeds (dry weight) is 1g, then The volume of the ethanol aqueous solution is 2ml or the neem seed weight (dry weight) is 1kg, then the volume of the ethanol aqueous solution is 2L, the extraction time is 3h, and the extraction temperature is 40℃;

[0063] 3) After the mixture in the extractor is cooled, filter it to remove neem seeds to obtain neem seed filtrate;

[0064] 4) The filtrate is evaporated to dryness to obtain neem seed extract, and then water is added to dissolve the neem seed extract to obtain an aqueous solu...

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Abstract

The invention provides a plant-based wood micro-capsule preservative and a preparation method thereof. The preservative comprises a neem seed extract and urea resin. The mass percent concentration of the neem seed extract is 5-10%. The solid content of the urea resin is 40-60%. The preservative comprises the neem seed extract, is a natural environment-friendly preservative, does not contain heavy metal, and does not have toxic effect on humans and animals. According to preserving wood prepared through the preparation method, the antiseptic effect is remarkable, the weight loss ratio of wood which is treated through the preservative and eroded by indoor rot fungi is 6%, and the antiseptic performance is improved and meets the requirement of the level I (strong antiseptic level) regulated in the national standard GB / T 13942.1-2009.

Description

Technical field [0001] The invention relates to an infiltration liquid for impregnated wood and a preparation method of the infiltration liquid, in particular to a microcapsule anticorrosive liquid and a preparation method thereof. Background technique [0002] As a biological material composed of natural polymer compounds, wood has the advantages of high strength-to-weight ratio, low processing energy consumption, and relatively low environmental pollution. However, it also has loose materials and large variations in material properties, which are easily affected by the environment and microorganisms. Insufficient damage caused by the infringement. [0003] Traditional wood preservative treatment can effectively improve the corrosion resistance of wood to a certain extent and extend the service life of wood. However, most traditional wood preservatives use copper, chromium, arsenic and other elements as the main effective components, and these metal components It has potential ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52
CPCB27K3/52B27K2240/20
Inventor 徐国祺王立海
Owner NORTHEAST FORESTRY UNIVERSITY
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