Tea polyphenol preservative and using method thereof

Abstract

The invention discloses a tea polyphenol preservative and a using method thereof, and belongs to the field of wood corrosion prevention. The invention aims to provide a wood preservative and a using method thereof. The tea polyphenol preservative is prepared from water-soluble tea polyphenol powder and sterile distilled water; water vapor heating treatment further can be carried out, or synergists such as VE, NaCl and the like are added. The using method for the tea polyphenol preservative comprises the following steps: carrying out vacuum-pumping on wood for 0.5-1.5 hours in an environment with vacuum degree being 0.098MPa; soaking the wood by use of the tea polyphenol preservative for 1-3 hours under soaking pressure of 0.8-1.2MPa, and putting the soaked wood at the normal temperature for 1 hour, and then drying the soaked wood for 10-15 hours in an oven with a temperature being 60-85 DEG C. The product has relatively strong inhibiting effect on growth of wood-decaying fungi (coriolus versicolor and glocophyllum trabocum). The tea polyphenol preservative is used for corrosion prevention of wood.

Description

technical field [0001] The invention belongs to the field of wood preservation; in particular, it relates to a tea polyphenol preservative and an application method thereof. Background technique [0002] Due to the serious shortage of global timber resources, wood preservative technology is one of the effective methods to prolong the service life of timber, solve the contradiction between supply and demand of timber, and protect forest resources. However, traditional wood preservatives contain heavy metals such as arsenic or chromium, which pollute the environment, and through bioconcentration and food chain effects, the agents accumulate and remain in the organism, and even cause chronic toxicity such as carcinogenicity, teratogenicity, and gene mutation. [0003] At present, wood preservatives are developing rapidly in the direction of low (non-)toxicity. Plant-derived, animal-derived and microbial-derived biomass preservatives have natural antiseptic properties and are ha...

AI Technical Summary

Problems solved by technology

[0005] Causes: 1. Purification is difficult. During the separation process, the tissue is ground and the cells are broken, making these substances mixed and interacting, which makes the purification and refining of the effective substances of biomass wood preservatives more complicated.

2. High production cost, low industrial productivity, complex manufacturing process of biomass wood preservatives, high initial investment, and large scale of technical investment make manufacturers discouraged from the development of such products

3. The comprehensive performance is not high, and the use of certain biomass wood preservatives may reduce the physical and mechanical properties of wood

[0006] The tea polyphenol aqueous solution or tea polyphenol powder prepared by the existing technology is currently only used in the fields of food preservation, fresh-keeping, medicine and daily chemicals, and there is no relevant report on the application in the field of wood preservation

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