CN110587755A - Wood preservative with tea polyphenol - Google Patents

Abstract

The invention discloses a wood preservative with tea polyphenol, which solves the problems that in the prior art, the preservative can greatly influence the preservative performance in a humid environment and reduce the service life. The invention comprises the following substances in parts by weight: 12-14 parts of boric acid, 2-4 parts of disodium octaborate, 10-12 parts of dicyandiamide, 6-8 parts of sodium fluoride, 42-50 parts of ammonium sulfate, 2-4 parts of copper oxide, 2-5 parts of tea polyphenol and 1-3 parts of carboxymethyl cellulose. When the preservative prepared from the components in proportion is applied to wood, the purposes of inhibiting and killing indoor bacteria and expelling insects can be effectively achieved; the wood board treated by the method can emit fragrant tea smell, so that the effect of refreshing the brain is better achieved, the duration is long, and the smell volatilization time can be more than 3 years.

Description

Wood preservative with tea polyphenol

Technical Field

The invention relates to a preservative, in particular to a wood preservative with tea polyphenol.

Background

Wood is one of the important raw materials for national construction and daily necessities of people, and is used for building materials, industrial materials and the like. Along with the improvement of living standard of people, the demand of wood is increasing. The wood is a natural organic material, has obvious biological characteristics and is easy to be invaded by organisms such as bacteria, insects, marine borers and the like. The long-term use of wood, particularly for long-term outdoor use, is greatly restricted.

Spoilage organisms cause the wood to decay, causing it to be destroyed. Before use, proper preservatives are selected according to different application environments, and appropriate treatment is carried out, so that the wood decay can be effectively delayed. Forest resources which can be harvested and used in China are very limited, and it is unrealistic to hope that a large amount of foreign exchange imported wood is used.

The wood is subjected to preservative treatment, the service life of the wood products is prolonged, and the method is one of important ways of saving the wood and protecting forest resources. At present, the wood preservatives used in various countries in the world are mainly CCA preservatives, which contain arsenic, chromium and other substances, have toxicity, are not beneficial to environmental protection, and are strictly limited in use in some countries.

And the wood is easy to warp, crack, deform, perishables, mildews and have short service life in the using process due to the anisotropy of the wood, and particularly, the wood is quick-growing, so that the defects of the wood are more serious, and the using way of the wood is limited. Therefore, many scientific research activities for functional improvement of wood have been carried out in order to improve the dimensional stability and prolong the service life of wood.

At present, the cost reasons are that: inorganic salt fire retardant is mainly used, so that moisture is easy to absorb, the fire retardant is easy to seep out to the surface of the wood, and particularly in southern areas, due to the moisture and the seepage of the fire retardant, the multiple effects of fire retardation, mildew prevention, corrosion prevention and insect prevention are difficult to achieve, so that the durability of the treated wood is reduced.

Disclosure of Invention

The invention aims to solve the problems that the preservative in the prior art can greatly influence the preservative performance in a humid environment and reduce the service life; provides a wood preservative with tea polyphenol which solves the problems.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a wood preservative with tea polyphenol comprises the following substances in parts by weight:

12-14 parts of boric acid, 2-4 parts of disodium octaborate, 10-12 parts of dicyandiamide, 6-8 parts of sodium fluoride, 42-50 parts of ammonium sulfate, 2-4 parts of copper oxide, 2-5 parts of tea polyphenol and 1-3 parts of carboxymethyl cellulose.

When the preservative composed of the components and the proportion is applied to wood, the purposes of bacteriostasis and insect prevention can be better achieved, the service life is effectively prolonged, and the effect is more remarkable.

In addition, substances containing arsenic, chromium and the like are not adopted in the formula, so that the environment-friendly paint has no toxicity and excellent environment-friendly effect.

Meanwhile, the indoor bacteria can be effectively inhibited and killed by matching the components; the refreshing tea can also remove wood and indoor formaldehyde to play a role in purifying air, can emit faint scent tea smell, and can better achieve the effects of refreshing and restoring consciousness, the duration is long, and the smell volatilization time can be more than 3 years.

Further, the feed additive comprises the following substances in parts by weight:

13 parts of boric acid, 3 parts of disodium octaborate, 11 parts of dicyandiamide, 8 parts of sodium fluoride, 5 parts of tea polyphenol, 48 parts of ammonium sulfate, 4 parts of copper oxide and 1 part of carboxymethyl cellulose.

Further, the feed additive comprises the following substances in parts by weight:

12 parts of boric acid, 4 parts of disodium octaborate, 12 parts of dicyandiamide, 6 parts of sodium fluoride, 3 parts of tea polyphenol, 42 parts of ammonium sulfate, 2 parts of copper oxide and 3 parts of carboxymethyl cellulose.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. when the preservative prepared from the components in proportion is applied to wood, the purposes of inhibiting and killing indoor bacteria and expelling insects can be effectively achieved; the wood board treated by the method can emit fragrant tea smell, so that the refreshing effect is better achieved, the lasting time is long, and the smell volatilization time can be more than 3 years;

2. the formula of the invention does not adopt substances containing arsenic, chromium and the like, has no toxicity and has excellent environmental protection effect.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.

Example 1

A wood preservative with tea polyphenol comprises the following substances in parts by weight:

12-14 parts of boric acid, 2-4 parts of disodium octaborate, 10-12 parts of dicyandiamide, 6-8 parts of sodium fluoride, 42-50 parts of ammonium sulfate, 2-4 parts of copper oxide, 2-5 parts of tea polyphenol and 1-3 parts of carboxymethyl cellulose.

In the embodiment, the specific ratio of the preservative is as follows:

13 parts of boric acid, 3 parts of disodium octaborate, 11 parts of dicyandiamide, 8 parts of sodium fluoride, 5 parts of tea polyphenol, 48 parts of ammonium sulfate, 4 parts of copper oxide and 1 part of carboxymethyl cellulose.

The preparation method of the preservative in the example is as follows:

(1) uniformly mixing 2-4 parts of copper oxide, 10-12 parts of dicyandiamide and 42-50 parts of ammonium sulfate, and stirring for more than 2 hours at 50-80 ℃;

(2) cooling to 30-40 ℃, adding 12-14 parts of boric acid, 2-4 parts of disodium octaborate and 6-8 parts of sodium fluoride, uniformly mixing, naturally cooling, adding 2-5 parts of tea polyphenol and 1-3 parts of carboxymethyl cellulose when the temperature is lower than 25 ℃, and uniformly mixing and stirring.

The method for treating wood by adopting the preservative comprises the following steps:

(1) the wood is placed in a sealed treatment tank,

(2) firstly, vacuumizing a treatment tank, wherein the relative vacuum degree is-0.1 +/-0.05 Mpa, then introducing the preservative into the treatment tank, pressurizing to 5Mpa +/-0.05 Mpa for 2-3 hours, and finally, relieving the pressure and emptying the preservative;

(3) repeating the step (2) for more than 2 times to obtain a dipping material;

(4) the impregnation treatment material is pre-dried at the temperature of 50 ℃, and then is dried in a temperature increasing mode of 10 ℃/2-3 days until the water content of the wood is 8-12%.

Example 2

The difference between this example and example 1 is that the mixture ratio of each substance in this example is different:

wherein, the composition comprises 12 parts of boric acid, 4 parts of disodium octaborate, 12 parts of dicyandiamide, 6 parts of sodium fluoride, 3 parts of tea polyphenol, 42 parts of ammonium sulfate, 2 parts of copper oxide and 3 parts of carboxymethyl cellulose.

The above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the scope of the present invention, but all the modifications made by the principles of the present invention and the non-inventive efforts based on the above-mentioned embodiments shall fall within the scope of the present invention.

Claims (3)

1. The wood preservative with tea polyphenol is characterized by comprising the following substances in parts by weight:

12-14 parts of boric acid, 2-4 parts of disodium octaborate, 10-12 parts of dicyandiamide, 6-8 parts of sodium fluoride, 42-50 parts of ammonium sulfate, 2-4 parts of copper oxide, 2-5 parts of tea polyphenol and 1-3 parts of carboxymethyl cellulose.

2. The wood preservative with tea polyphenol as claimed in claim 1, which is characterized by comprising the following substances in parts by weight:

13 parts of boric acid, 3 parts of disodium octaborate, 11 parts of dicyandiamide, 8 parts of sodium fluoride, 5 parts of tea polyphenol, 48 parts of ammonium sulfate, 4 parts of copper oxide and 1 part of carboxymethyl cellulose.

3. The wood preservative with tea polyphenol as claimed in claim 1, which is characterized by comprising the following substances in parts by weight:

12 parts of boric acid, 4 parts of disodium octaborate, 12 parts of dicyandiamide, 6 parts of sodium fluoride, 3 parts of tea polyphenol, 42 parts of ammonium sulfate, 2 parts of copper oxide and 3 parts of carboxymethyl cellulose.