CN111086075A

CN111086075A - Preparation method of wood for preventing insect damage

Info

Publication number: CN111086075A
Application number: CN201911029253.0A
Authority: CN
Inventors: 赵志强
Original assignee: Zhangzhou Xiangcheng Laomujiang Wood Industry Co ltd
Current assignee: Zhangzhou Xiangcheng Laomujiang Wood Industry Co ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-05-01

Abstract

The invention discloses a preparation method for preventing wood from being damaged by worms, which comprises the following steps: 1) drying the wood, 2) putting the honeycomb into water, boiling the honeycomb with slow fire until the water is boiled, adding wax oil, wherein the wax oil comprises plant wax and edible white vinegar in a weight ratio of 1:0.5-0.7, melting and boiling the wax oil for 0.5-2h, adding 4-6 wt% of edible salt, keeping the temperature at 90-100 ℃ for 4-6h, continuously stirring the mixture for 4-6h, filtering the mixture to remove filter residues, and solidifying the filter residues to obtain the homemade beeswax; 3) putting the dried wood into a wax boiling pool, and boiling wax for 60-128 h by adopting self-made beeswax; 4) and naturally drying for more than 50h in an indoor environment. The invention has good effect of preventing worm damage.

Description

Preparation method of wood for preventing insect damage

Technical Field

The invention relates to a preparation method for preventing wood from being damaged by worms.

Background

In modern home life, solid wood furniture is generally expensive, and some luxuries even in home are quite annoying once being damaged by worms. Especially, since the breeding speed of the termites is high, if the termites cannot be cured in time, the termites can not only damage the solid wood furniture, but also corrode the solid wood floor at home and even the veneer on the ceiling.

In the prior art, CN200920315757.7 discloses a laminate wood flooring, which is characterized by corrosion resistance and moth-proofing, and relies on a side surface coated with a paraffin layer 5. Protection is limited because it is applied only locally.

CN201710233915.0 discloses a wood insect-resistant mildew-proof treating agent, which comprises the following raw material formula components in parts by mass: 12-20 parts of ginkgo branches, 15-27 parts of camphor tree leaves, 5-9 parts of tobacco, 5-20 parts of borax, 1-2 parts of calcium oxide, 3-10 parts of ethanol, 1-3 parts of white wax, 1-3 parts of chloroform and 100-200 parts of distilled water. The invention also discloses a method for preparing the wood insect-resistant mildew-proof treating agent. The treating agent for resisting insects and preventing mildew of the wood can enable pesticide effects to rapidly enter the interior of the wood and be uniformly distributed, so that the wood can be prevented from damp, corrosion, cracking and moth-eating, and the use and storage time of wood products is greatly prolonged. However, the examples only demonstrate a reduction in the amount of new plaque and do not demonstrate protection against insect damage.

Cn201910085859.x discloses a production process of an ultra-stable solid wood floor, which comprises the following steps: the floor blank and the wax are simultaneously placed in the heating chamber, the heating chamber is in a closed state, then air in the heating chamber is pumped out to enable the heating chamber to be in a vacuum state, the floor blank and the wax in the heating chamber are heated to 100-120 ℃ from normal temperature while being pumped out, then the floor blank is taken out and stands to the normal temperature state, then the floor blank stands for 15-20 days in a natural state, and then the floor blank is subjected to sanding, thickness setting, grooving and surface oil decoration or paint coating processes in sequence to obtain a finished floor. The invention can obviously improve the deformation resistance, corrosion resistance and moth-proof effect of the solid wood floor and prolong the service life. However, many of the currently used waxes are industrial waxes, which contain small amounts of olefins, aromatic hydrocarbons, heavy metals, and trace amounts of condensed ring aromatic compounds, and if used in furniture, these components may be harmful to the human body over a long period of time.

Disclosure of Invention

The invention provides a preparation method for preventing wood from being damaged by worms, which overcomes the defects of the method for preventing the wood from being damaged by the worms in the background technology.

The technical scheme adopted by the invention for solving the technical problem is as follows:

the method for preventing wood from being damaged by worms comprises the following steps:

1) the wood is dried and the wood is dried,

a, soaking a log plate in an oxalic acid aqueous solution, wherein the oxalic acid aqueous solution is in proportion: the volume ratio of the oxalic acid to the water is 1: 5-20; soaking the plate for 50-100 h; then taking out and placing at room temperature for at least 24 h; preferably 24-48 h.

b, soaking the cured plate in a caustic soda solution, wherein the proportion of the caustic soda solution is as follows: the mass volume ratio of the sodium hydroxide to the water is 1: 5-10; soaking the plate for 75-125 h; taking out and placing at room temperature for at least 24 h; preferably 24-48 h.

c: placing the board into a vacuum drier for dehydration and drying, wherein the moisture content of the dehydrated and dried wood is not more than 7 percent, namely the wood is qualified;

2) putting a honeycomb into water, boiling the honeycomb with slow fire until the water is boiled, adding wax oil, wherein the wax oil comprises vegetable wax and edible white vinegar in a weight ratio of 1:0.5-0.7, melting and boiling the wax oil for 0.5-2h, adding 4-6 wt% of edible salt, keeping the temperature at 90-100 ℃ for 4-6h, continuously stirring the mixture for the period of time, filtering to remove filter residues, and solidifying to obtain the self-made beeswax;

3) putting the dried wood into a wax boiling pool, and boiling wax for 60-128 h by adopting self-made beeswax;

4) and naturally drying for more than 50h in an indoor environment.

5) The temperature range of the wax boiling water is 110-120 ℃.

The vegetable wax comprises: at least one of carnauba wax, candelilla wax, rice bran wax, sugar cane wax, bay wax, castor bean wax, jojoba wax, sumac wax, ouricury wax, and douglas fir wax.

Compared with the background technology, the technical scheme has the following advantages:

1. the self-made beeswax adopted by the invention does not generate harmful gas and is friendly to human body.

2. When the wood is dried, the wood is firstly treated by oxalic acid, and the function of oxalic acid aqueous solution is as follows: the wood is bleached. Meanwhile, the resin in the wood can be effectively removed; then using caustic soda to treat, the effect of caustic soda solution is to saponify the oil, fat and rosin matters in the wood, degreasing for 2 times, and increasing the stability of the board. Therefore, the treated wood has good stability and is not easy to deform.

3. The wood treated by the self-made beeswax has good mothproof effect.

Drawings

The invention is further illustrated by the following figures and examples.

FIG. 1 is a diagram of a test object of Uygur autonomous system of example 1, wherein a is not dried and has a humidity of 17.5%; b, the humidity after degreasing is 9.2%; c, humidity after vacuum drying is 6.5%, d shows that no deformation is generated after vacuum drying.

FIG. 2 is a diagram of a sample of ebony of example 2, wherein a is not dried and has a humidity of 17.0%; b, the humidity after degreasing is 12.4%; c, no deformation is generated after vacuum drying treatment, and the humidity is 6.7%.

FIG. 3 is a diagram of a sample of ebony of example 3, wherein a is not dried, and b is not deformed after degreasing; c, no deformation is generated after vacuum drying treatment, and the humidity is 5%.

FIG. 4 is a test object of the gold wire teak of example 4, wherein a is not dried, b is degreased; c, no deformation is generated after vacuum drying treatment, and the humidity is 5.3%.

FIG. 5 is a graph showing the results of the test in example 5, wherein a is the high temperature cooking of two sheets; b is that the surface of the beewax board does not secrete grease and has peculiar smell; c is that the surface of the beeswax plate is complete and has no peculiar smell.

FIG. 6 is a graph showing the results of the test in example 6, wherein a is the water spray performed by placing the beeswax plate in a sealed environment; and b, the beeswax plate has no peculiar smell, and formaldehyde is identified in the sealed space, so that the formaldehyde content is qualified.

FIG. 7 is a graph of the results of the tests in example 7, wherein a is no odor of the beeswax plate; b is the beewax plate surface is complete without peculiar smell.

FIG. 8 is a graph showing the results of the test in example 8, wherein a is the treatment of 4 plates, respectively; b is the difference of the end heads of the processed 4 plates.

FIG. 9 is a graph of the results of the tests in example 9, where two pieces of uncooked wax red oak had been gnawed and the wax board had not been gnawed; a is boiled wax and uncooked wax; b is uncooked wax.

FIG. 10 is a graph of the results of the tests in example 10, where two pieces of un-waxed cherry had been gnawed and the wax-boiled board had not been gnawed; a. b and c are different angles respectively;

FIG. 11 is a graph showing the results of the test in example 11, in which two pieces of unboiled carnauba were not gnawed, and the wax boards were not gnawed. a and b are different angles, respectively.

Detailed Description

Examples 1 to 4 Wood drying

The method for drying wood mainly comprises

1: firstly, the plate is degreased

a, soaking a log plate in an oxalic acid aqueous solution, wherein the oxalic acid aqueous solution is in proportion: the oxalic acid + water is diluted to 1:10 (volume ratio). And soaking the plate for 72 h. Taking out and curing for 24h (namely standing for 24h at room temperature).

b, soaking the plate after the cultivation in a caustic soda solution, wherein the proportion of the caustic soda solution is as follows: and (3) diluting the mixture by 1:6 (mass-to-volume ratio) with sodium hydroxide and water. The plates were soaked for 96 h. Taking out and preserving for 24 h.

2: the raw wood plate is subjected to vacuum drying treatment

And c, putting the plate into a vacuum drier, and checking whether the valves are correctly opened and closed.

d, adjusting the vacuum gauge to (lower limit 0.02-upper limit 0.04) MPa.

e, adjusting the heating temperature to 150 DEG C

f, adding water into a vacuum pump water tank (antifreeze in winter)

g, sealing the cover of the vacuum drier, and pressing a vacuum starting button.

h, vacuum cooking for 48h, and determining that the moisture content of the dehydrated and dried wood is not more than 7 percent.

Examples 1 to 4 show that the wood treated by the method of drying the wood according to the present invention had no deformation and the water content was acceptable.

Preparation of beeswax

Putting a proper amount of honeycomb into a pottery jar, adding water with a volume of half of that of the honeycomb, cooking with charcoal with slow fire, adding vegetable wax and edible white vinegar with a volume ratio of 1:0.6 after the water is boiled, wherein the vegetable wax can be at least one of carnauba wax, candelilla wax, rice bran wax, sugarcane wax, bay wax, castor bean wax, jojoba wax, lacquer wax, ouricury wax and douglas fir wax. In this embodiment, the specific types are: jiaxing Shanghai Dong, type/brand: yichun, flower wax (crystalline wax), CAS 68514-74-9; adding 5 wt% of edible salt after 1h of boiling.

Stirring evenly to promote the wax oil to be dissolved and then firing with small fire. And (3) continuously stirring the wax oil from the honeycomb for five hours, filtering the wax oil by using a net layer, inverting the liquid beeswax in the wax oil, and completely solidifying the liquid beeswax to obtain the self-made beeswax.

Examples 5 to 8 environmental protection experiments

To test the effect of the self-made beeswax of the present invention, the following tests were performed

Taking dried wood

1) Polishing the surface of the wood by adopting a water grinding mode;

2) waxing, namely wiping water stagnation on the surface by using cotton cloth, uniformly coating a proper amount of self-made beeswax, and keeping the surface wet;

3) polishing the mixture back and forth by using a polishing machine until the surface brightness is uniform; then wiping the residual beeswax on the surface;

4) drying the wood for more than 4 hours

And (3) environmental protection test:

examples 5-8 demonstrate that the beeswax treated wood of the present invention did not deform, did not have a foreign odor, and was environmentally friendly

Examples 9 to 11 mothproofing experiments

Boiling wax and soaking: putting the dried wood (wood size: 500 × 150 × 2400mm) into a wax boiling pool, controlling the temperature of the wax boiling to be 100-120 ℃, boiling the wax in a non-vacuum manner for 60-128 h, wherein the wax is the self-made beeswax prepared in the previous step.

Naturally drying for 76 h.

And (3) insect-proof test:

FIG. 5 is a graph of the results of the tests in example 9, showing that two pieces of uncooked wax red oak had been gnawed and the wax board had not been gnawed

FIG. 6 is a graph of the results of the tests in example 10, wherein two pieces of un-boiled wax cherry wood were gnawed and the wax-boiled plate was not gnawed

FIG. 7 is a graph showing the results of the test in example 11, in which two pieces of the carnauba rosewood without wax cooking were gnawed and the wax cooking plate was not gnawed

Examples 9-11 show that wood treated by the present invention is not deformed, and after wax boiling, biological wax is contained in wood fiber, and insects cannot bite the wax, so that wood is vermin even if the environment is humid. The damage to the wooden furniture can not be caused, so the wood furniture can be prevented from being damaged by worms and has no peculiar smell.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. The preparation method of the wood mothproof is characterized by comprising the following steps: the method comprises the following steps:

1) the wood is dried and the wood is dried,

a, soaking a log plate in an oxalic acid aqueous solution, wherein the oxalic acid aqueous solution is in proportion: the volume ratio of the oxalic acid to the water is 1: 5-20; soaking the plate for 50-100 h; then taking out and placing at room temperature for at least 24 h;

b, soaking the cured plate in a caustic soda solution, wherein the proportion of the caustic soda solution is as follows: the mass volume ratio of the sodium hydroxide to the water is 1: 5-10; soaking the plate for 75-125 h; taking out and placing at room temperature for at least 24 h;

4) and naturally drying for more than 50h in an indoor environment.

2. The method for preparing wood to prevent wood from being damaged by worms according to claim 1, wherein: the vegetable wax is as follows: at least one of carnauba wax, candelilla wax, rice bran wax, sugar cane wax, bay wax, castor bean wax, jojoba wax, sumac wax, ouricury wax, and douglas fir wax.

3. The method for preparing wood to prevent wood from being damaged by worms according to claim 1, wherein: the wood is cut into boards, and the thickness of each board is 0.5-20 cm.

4. The method for preparing wood to prevent wood from being damaged by worms according to claim 1, wherein: in the step 1), a and b are taken out and then are placed for 24-48h at room temperature.

5. The method for preparing wood to prevent wood from being damaged by worms according to claim 1, wherein: the temperature range of the wax boiling in the step 3) is 110-120 ℃.