CN108748525B - Compound copper compound preservative for pinus massoniana wood and preservative method - Google Patents
Compound copper compound preservative for pinus massoniana wood and preservative method Download PDFInfo
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- CN108748525B CN108748525B CN201810623404.4A CN201810623404A CN108748525B CN 108748525 B CN108748525 B CN 108748525B CN 201810623404 A CN201810623404 A CN 201810623404A CN 108748525 B CN108748525 B CN 108748525B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/34—Organic impregnating agents
- B27K3/50—Mixtures of different organic impregnating agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/20—Removing fungi, molds or insects
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Abstract
The invention discloses a compound coppering compound preservative for pinus massoniana wood and a preservative method, wherein the preservative is prepared from the following raw materials in percentage by mass: 0.05-0.50% of 8-hydroxyquinoline copper, 0.05-0.50% of tebuconazole, 5.00-20.00% of glacial acetic acid, 5.00-20.00% of didecyl dimethyl ammonium chloride and the balance of water; the preservation method comprises the steps of preservative impregnation, vacuum drying and the like of the masson pine wood. The compound copper compound preservative has excellent broad-spectrum bactericidal property, leaching resistance and bacteriostatic ability, low price and low toxicity to people and livestock. The anticorrosion method can obviously improve the control efficiency of the masson pine wood on decay fungi, blue-turning fungi and mould and obviously reduce the damage value of the wood infected by fungi, and has simple process, convenient operation and small energy consumption, thereby effectively reducing the production cost.
Description
Technical Field
The invention belongs to the technical field of wood processing, and particularly relates to a compound copper compound preservative for pinus massoniana wood and a preservative method.
Background
The forest area accounting for 5 percent of the whole world and the forest accumulation accounting for 3 percent of the whole world support the wood consumption demand accounting for 20 percent of the whole world population and increasing day by day, the forest resources face huge pressure, and the safety situation is very severe. In 2017, China stops commercial felling of natural forests, the wood yield is reduced sharply, the gaps between supply and demand of wood are increased continuously, and fast-growing artificial forest wood is the main wood raw material in China in future. The masson pine is one of main materials and forestation tree species in China, but the masson pine wood is very easily infected by blue-stain bacteria and mould in the storage process, so that the wood is discolored. Although wood discoloration bacteria do not cause decay of wood, the wood is blackened, greened or blued, so that the surface of the wood is polluted, the quality of the wood is seriously reduced, the appearance of the wood is influenced, and serious economic loss is caused. The preservation of masson pine wood is always a difficult problem in the wood processing process, the successful technology for preventing the blue discoloration of wood in the current production mainly depends on the treatment of chemical agents, and some high-toxicity preservatives which are forbidden or limited to be used internationally are still used in China. For example, the traditional preservative sodium pentachlorophenol is a widely used preservative, but is prohibited in most countries due to the toxicity to human and livestock and the influence on the environment. CCA contains arsenic, and regulations have been enacted in the united states and the european union to prohibit its use in civilian applications at the end of 2003. The international trend of higher and higher environmental requirements, and the research and development of novel environment-friendly and efficient preservatives are the research and development directions in the future.
Copper has high toxic effect on decay fungi, certain resistance to discoloring fungi and mould fungi, low price and low toxicity to human and livestock. In recent years, copper-based, arsenic-free, chromium-free, low-toxicity, water-soluble corrosion inhibitors such as ACQ-B, CC, CBA-A have found widespread use in the building materials industry. Copper 8-quinolinol is not only a preservative with significant discoloration and mildew resistance compared to the above preservatives, but also copper 8-quinolinol is less toxic and not yet subject to the U.S. EPA restrictions and is approved by the U.S. food and drug administration for the preservation of wood in direct contact with food. On the other hand, a single bactericide has no broad spectrum for preventing and controlling all wood-decay fungi, and the problems of easy loss, poor inhibition effect on copper-resistant decay fungi and the like exist when the copper compound is used alone, so the development of the compound copper compound wood preservative prepares the copper compound and a plurality of bactericides according to a certain proportion, generates synergistic and synergistic effects, and enhances the broad spectrum, the leaching resistance and the bacteriostasis capability of the preservative. Therefore, the 8-hydroxyquinoline copper is mainly used for developing the compound copper compound wood preservative, so that the environment-friendly requirement can be met, and the development prospect is good.
Since copper 8-hydroxyquinoline is not easily soluble in water, it is mainly used for preparing an oil-borne preservative using an organic solvent as a carrier. However, the oil-borne preservatives have disadvantages, mainly including that the organic solvent generally has no corrosion resistance or small corrosion resistance, and only serves as a carrier, and the organic solvent is expensive, which results in high treatment cost, and the common organic solvents are combustible substances, which requires strict fire prevention measures and good ventilation equipment in the corrosion prevention treatment plant. However, the water-borne preservative using water as a carrier can effectively overcome the above disadvantages, but few studies and reports of using 8-hydroxyquinoline copper for preparing the water-borne preservative exist in the prior art.
Disclosure of Invention
Aiming at the defects, the invention provides the compound copper compound preservative for the masson pine wood, which is prepared by mixing 8-hydroxyquinoline copper, tebuconazole and didecyl dimethyl ammonium chloride according to a certain proportion and adding a certain proportion of cosolvent into the mixture. Meanwhile, aiming at the fluid permeability and the fine structure of the masson pine wood, the invention optimizes the processes of cold soaking, drying and the like of the masson pine wood preservative treatment, provides a method for preserving the masson pine wood, improves the control efficiency of the masson pine wood on decay fungi, blue-turning fungi and mould fungi, and reduces the damage value of the wood infected by fungi.
In order to achieve the above object, the technical solution of the present invention is as follows:
the compound type coppering compound preservative for the pinus massoniana wood comprises the following raw material components in percentage by mass: 0.05-0.50% of 8-hydroxyquinoline copper, 0.05-0.50% of tebuconazole, 5.00-20.00% of glacial acetic acid, 5.00-20.00% of didecyl dimethyl ammonium chloride and the balance of water.
Further preferably, the mass of the glacial acetic acid is at least 20 times that of the copper 8-hydroxyquinoline.
Further optimized, the compound copper compound preservative for the pinus massoniana wood comprises the following raw material components in percentage by mass: 0.40% of 8-hydroxyquinoline copper, 0.40% of tebuconazole, 20.00% of glacial acetic acid, 20.00% of didecyl dimethyl ammonium chloride and the balance of water.
The anticorrosion method by using the compound coppering compound preservative of the pinus massoniana wood comprises the following steps:
(1) weighing the raw materials according to the weight, mixing the 8-hydroxyquinoline copper and glacial acetic acid in a constant-temperature water bath at the temperature of 30 ℃ to fully dissolve the 8-hydroxyquinoline copper, adding tebuconazole, didecyl dimethyl ammonium chloride and water, and uniformly stirring to obtain a compound copper compound preservative;
(2) sawing fresh masson pine, processing into a standard sample, and planing without drying;
(3) the masson pine wood is subjected to cold soaking treatment for 3min at normal temperature and pressure by using the prepared compound copper compound preservative;
(4) after the impregnation is finished, cleaning the preservative liquid on the surface of the masson pine wood;
(5) putting the masson pine wood subjected to preservative treatment into a microwave vacuum drying oven, and continuously drying under the environment that the pressure is 0.04MPa, the drying temperature is 60 ℃ and the microwave power is 700-800 w until the water content of the masson pine wood is less than 15%;
(6) and (4) stacking the masson pine wood subjected to microwave vacuum drying in an open manner, and placing the masson pine wood in a natural environment.
Further optimizing, the microwave operating frequency in the step (5) is 2440-.
Compared with the prior art, the invention has the following beneficial effects:
(1) the compound copper compound preservative is prepared from 8-hydroxyquinoline copper, tebuconazole and didecyl dimethyl ammonium chloride according to a certain proportion, synergistic and synergistic effects are generated, and the broad spectrum, the leaching resistance and the bacteriostatic ability of the preservative are enhanced.
(2) The preservative belongs to a water-borne preservative, in order to fully dissolve oil-soluble 8-hydroxyquinoline copper, in the preparation process of the preservative, 8-hydroxyquinoline copper and glacial acetic acid are firstly mixed in a thermostatic water bath at 30 ℃ so as to fully dissolve the 8-hydroxyquinoline copper, and the mass of the glacial acetic acid is strictly controlled to be more than 20 times of the mass of the 8-hydroxyquinoline copper so as to ensure that the 8-hydroxyquinoline copper can be fully dissolved in an aqueous solution, thus obtaining the water-borne preservative of the compound copper compound.
(3) The didecyl dimethyl ammonium chloride is added into the preservative, so that the preservative has the effects of sterilization and disinfection and can further enhance the broad spectrum and the bacteriostatic ability of the preservative; meanwhile, the cationic surfactant has good surface activity under the acidic condition of adding glacial acetic acid, can effectively enhance the wettability of the preservative, improves the permeability of the preservative, improves the pesticide absorption amount of the masson pine wood in the preservative treatment process, and further enhances the bacteriostatic ability of the wood.
(4) After the masson pine wood is soaked by the preservative, aiming at the characteristic of good permeability of the masson pine wood, the masson pine wood is treated by adopting a microwave vacuum drying technology, so that the speed of water movement and outward evaporation inside the wood is accelerated, and the drying time is shortened; meanwhile, the masson pine wood is dried at a low temperature, so that the defects of internal cracking and internal scorching of the masson pine wood due to overhigh temperature in the microwave drying process can be avoided, the moisture content of the wood can be quickly reduced, the drying speed is improved, the energy consumption of an anticorrosion process is reduced, and the production cost is saved.
Detailed Description
The invention is further illustrated by the following examples, which are not to be construed as limiting the invention thereto. The specific experimental conditions and methods not indicated in the following examples are generally conventional means well known to those skilled in the art.
Example 1:
the compound type coppering compound preservative for the pinus massoniana wood comprises the following raw material components in percentage by mass: 0.05% of 8-hydroxyquinoline copper, 0.05% of tebuconazole, 5.00% of glacial acetic acid, 5.00% of didecyl dimethyl ammonium chloride and the balance of water.
The anticorrosion method by using the compound coppering compound preservative of the pinus massoniana wood comprises the following steps:
(1) weighing the raw materials according to the weight, mixing the 8-hydroxyquinoline copper and glacial acetic acid in a constant-temperature water bath at the temperature of 30 ℃ to fully dissolve the 8-hydroxyquinoline copper, adding tebuconazole, didecyl dimethyl ammonium chloride and water, and uniformly stirring to obtain a compound copper compound preservative;
(2) sawing fresh masson pine, processing into a standard sample, and planing without drying;
(3) the masson pine wood is subjected to cold soaking treatment for 3min at normal temperature and pressure by using the prepared compound copper compound preservative;
(4) after the impregnation is finished, cleaning the preservative liquid on the surface of the masson pine wood;
(5) putting the masson pine wood treated by the preservative into a microwave vacuum drying box, and continuously drying under the environment that the pressure is 0.04MPa, the drying temperature is 60 ℃ and the microwave power is 700-800 w until the moisture content of the masson pine wood is less than 15%, wherein the microwave working frequency is 2440 plus materials 2460 MHz, and the microwave input voltage is 210 plus materials 230V;
(6) and (4) stacking the masson pine wood subjected to microwave vacuum drying in an open manner, and placing the masson pine wood in a natural environment.
Example 2:
the compound type coppering compound preservative for the pinus massoniana wood comprises the following raw material components in percentage by mass: 0.10% of 8-hydroxyquinoline copper, 0.10% of tebuconazole, 5.00% of glacial acetic acid, 5.00% of didecyl dimethyl ammonium chloride and the balance of water.
The anticorrosion method by using the compound coppering compound preservative of the pinus massoniana wood comprises the following steps:
(1) weighing the raw materials according to the weight, mixing the 8-hydroxyquinoline copper and glacial acetic acid in a constant-temperature water bath at the temperature of 30 ℃ to fully dissolve the 8-hydroxyquinoline copper, adding tebuconazole, didecyl dimethyl ammonium chloride and water, and uniformly stirring to obtain a compound copper compound preservative;
(2) sawing fresh masson pine, processing into a standard sample, and planing without drying;
(3) the masson pine wood is subjected to cold soaking treatment for 3min at normal temperature and pressure by using the prepared compound copper compound preservative;
(4) after the impregnation is finished, cleaning the preservative liquid on the surface of the masson pine wood;
(5) putting the masson pine wood treated by the preservative into a microwave vacuum drying box, and continuously drying under the environment that the pressure is 0.04MPa, the drying temperature is 60 ℃ and the microwave power is 700-800 w until the moisture content of the masson pine wood is less than 15%, wherein the microwave working frequency is 2440 plus materials 2460 MHz, and the microwave input voltage is 210 plus materials 230V;
(6) and (4) stacking the masson pine wood subjected to microwave vacuum drying in an open manner, and placing the masson pine wood in a natural environment.
Example 3:
the compound type coppering compound preservative for the pinus massoniana wood comprises the following raw material components in percentage by mass: 0.20% of 8-hydroxyquinoline copper, 0.20% of tebuconazole, 10.00% of glacial acetic acid, 10.00% of didecyl dimethyl ammonium chloride and the balance of water.
The anticorrosion method by using the compound coppering compound preservative of the pinus massoniana wood comprises the following steps:
(1) weighing the raw materials according to the weight, mixing the 8-hydroxyquinoline copper and glacial acetic acid in a constant-temperature water bath at the temperature of 30 ℃ to fully dissolve the 8-hydroxyquinoline copper, adding tebuconazole, didecyl dimethyl ammonium chloride and water, and uniformly stirring to obtain a compound copper compound preservative;
(2) sawing fresh masson pine, processing into a standard sample, and planing without drying;
(3) the masson pine wood is subjected to cold soaking treatment for 3min at normal temperature and pressure by using the prepared compound copper compound preservative;
(4) after the impregnation is finished, cleaning the preservative liquid on the surface of the masson pine wood;
(5) putting the masson pine wood treated by the preservative into a microwave vacuum drying box, and continuously drying under the environment that the pressure is 0.04MPa, the drying temperature is 60 ℃ and the microwave power is 700-800 w until the moisture content of the masson pine wood is less than 15%, wherein the microwave working frequency is 2440 plus materials 2460 MHz, and the microwave input voltage is 210 plus materials 230V;
(6) and (4) stacking the masson pine wood subjected to microwave vacuum drying in an open manner, and placing the masson pine wood in a natural environment.
Example 4:
the compound type coppering compound preservative for the pinus massoniana wood comprises the following raw material components in percentage by mass: 0.30% of 8-hydroxyquinoline copper, 0.30% of tebuconazole, 10.00% of glacial acetic acid, 10.00% of didecyl dimethyl ammonium chloride and the balance of water.
The anticorrosion method by using the compound coppering compound preservative of the pinus massoniana wood comprises the following steps:
(1) weighing the raw materials according to the weight, mixing the 8-hydroxyquinoline copper and glacial acetic acid in a constant-temperature water bath at the temperature of 30 ℃ to fully dissolve the 8-hydroxyquinoline copper, adding tebuconazole, didecyl dimethyl ammonium chloride and water, and uniformly stirring to obtain a compound copper compound preservative;
(2) sawing fresh masson pine, processing into a standard sample, and planing without drying;
(3) the masson pine wood is subjected to cold soaking treatment for 3min at normal temperature and pressure by using the prepared compound copper compound preservative;
(4) after the impregnation is finished, cleaning the preservative liquid on the surface of the masson pine wood;
(5) putting the masson pine wood treated by the preservative into a microwave vacuum drying box, and continuously drying under the environment that the pressure is 0.04MPa, the drying temperature is 60 ℃ and the microwave power is 700-800 w until the moisture content of the masson pine wood is less than 15%, wherein the microwave working frequency is 2440 plus materials 2460 MHz, and the microwave input voltage is 210 plus materials 230V;
(6) and (4) stacking the masson pine wood subjected to microwave vacuum drying in an open manner, and placing the masson pine wood in a natural environment.
Example 5:
the compound type coppering compound preservative for the pinus massoniana wood comprises the following raw material components in percentage by mass: 0.40% of 8-hydroxyquinoline copper, 0.40% of tebuconazole, 20.00% of glacial acetic acid, 20.00% of didecyl dimethyl ammonium chloride and the balance of water.
The anticorrosion method by using the compound coppering compound preservative of the pinus massoniana wood comprises the following steps:
(1) weighing the raw materials according to the weight, mixing the 8-hydroxyquinoline copper and glacial acetic acid in a constant-temperature water bath at the temperature of 30 ℃ to fully dissolve the 8-hydroxyquinoline copper, adding tebuconazole, didecyl dimethyl ammonium chloride and water, and uniformly stirring to obtain a compound copper compound preservative;
(2) sawing fresh masson pine, processing into a standard sample, and planing without drying;
(3) the masson pine wood is subjected to cold soaking treatment for 3min at normal temperature and pressure by using the prepared compound copper compound preservative;
(4) after the impregnation is finished, cleaning the preservative liquid on the surface of the masson pine wood;
(5) putting the masson pine wood treated by the preservative into a microwave vacuum drying box, and continuously drying under the environment that the pressure is 0.04MPa, the drying temperature is 60 ℃ and the microwave power is 700-800 w until the moisture content of the masson pine wood is less than 15%, wherein the microwave working frequency is 2440 plus materials 2460 MHz, and the microwave input voltage is 210 plus materials 230V;
(6) and (4) stacking the masson pine wood subjected to microwave vacuum drying in an open manner, and placing the masson pine wood in a natural environment.
Example 6:
the compound type coppering compound preservative for the pinus massoniana wood comprises the following raw material components in percentage by mass: 0.50% of 8-hydroxyquinoline copper, 0.50% of tebuconazole, 20.00% of glacial acetic acid, 20.00% of didecyl dimethyl ammonium chloride and the balance of water.
The anticorrosion method by using the compound coppering compound preservative of the pinus massoniana wood comprises the following steps:
(1) weighing the raw materials according to the weight, mixing the 8-hydroxyquinoline copper and glacial acetic acid in a constant-temperature water bath at the temperature of 30 ℃ to fully dissolve the 8-hydroxyquinoline copper, adding tebuconazole, didecyl dimethyl ammonium chloride and water, and uniformly stirring to obtain a compound copper compound preservative;
(2) sawing fresh masson pine, processing into a standard sample, and planing without drying;
(3) the masson pine wood is subjected to cold soaking treatment for 3min at normal temperature and pressure by using the prepared compound copper compound preservative;
(4) after the impregnation is finished, cleaning the preservative liquid on the surface of the masson pine wood;
(5) putting the masson pine wood treated by the preservative into a microwave vacuum drying box, and continuously drying under the environment that the pressure is 0.04MPa, the drying temperature is 60 ℃ and the microwave power is 700-800 w until the moisture content of the masson pine wood is less than 15%, wherein the microwave working frequency is 2440 plus materials 2460 MHz, and the microwave input voltage is 210 plus materials 230V;
(6) and (4) stacking the masson pine wood subjected to microwave vacuum drying in an open manner, and placing the masson pine wood in a natural environment.
Comparative example 1:
the masson pine wood treated by the sodium pentachlorophenate with the mass fraction of 0.05 percent is taken as a comparative example and consists of the following raw materials in mass percentage: 0.125g of sodium pentachlorophenate and 249.875g of water are uniformly stirred. The masson pine wood is subjected to cold soaking treatment for 3min at normal temperature and normal pressure by using the prepared medicament.
Comparative example 2:
the masson pine wood treated by the sodium pentachlorophenate with the mass fraction of 0.50 percent is taken as a comparative example and consists of the following raw materials in mass percentage: 1.25g of sodium pentachlorophenate and 248.75g of water are uniformly stirred. The masson pine wood is subjected to cold soaking treatment for 3min at normal temperature and normal pressure by using the prepared medicament.
Comparative example 3:
the 8-hydroxyquinoline copper treated masson pine wood with the mass fraction of 0.50% is used as a comparative example and consists of the following raw materials in mass: 1.25g of 8-hydroxyquinoline copper and 248.75g of water, and stirring uniformly. The masson pine wood is subjected to cold soaking treatment for 3min at normal temperature and normal pressure by using the prepared medicament.
Comparative example 4:
tebuconazole with the mass fraction of 0.50 percent is used for treating masson pine wood as a comparative example, which is composed of the following raw materials by mass: 1.25g of tebuconazole and 248.75g of water are stirred uniformly. The masson pine wood is subjected to cold soaking treatment for 3min at normal temperature and normal pressure by using the prepared medicament.
Comparative example 5:
the method is characterized in that the wood of masson pine treated by didecyl dimethyl ammonium chloride with the mass fraction of 20% is used as a comparative example and consists of the following raw materials in mass percentage: 50g of didecyl dimethyl ammonium chloride and 200g of water are stirred uniformly. The masson pine wood is subjected to cold soaking treatment for 3min at normal temperature and normal pressure by using the prepared medicament.
Comparative example 6:
the glacial acetic acid treated masson pine wood with the mass fraction of 20% is used as a comparative example and consists of the following raw materials in mass percentage: 50g of glacial acetic acid and 200g of water are stirred uniformly. The masson pine wood is subjected to cold soaking treatment for 3min at normal temperature and normal pressure by using the prepared medicament.
Comparative example 7:
the masson pine wood was treated with clear water as a comparative example. And (3) carrying out cold soaking treatment on the masson pine wood for 3min at normal temperature and normal pressure by using clear water.
The preservatives of the 6 examples and 7 comparative examples described above were used
The preservative and the preservative method of the masson pine wood are tested according to the bacteriostatic performance test method specified in the national standard GB/T18621-2000 test method for preventing and controlling wood mildew and blue-turning bacteria by using the mildew preventive. The experiment can determine the medicine absorption amount of the masson pine wood to different preservatives and evaluate the mildew-proof effect of the masson pine wood, and the method comprises the following steps: .
(1) The masson pine test block is treated according to the preservative and the method in the above embodiment and the comparative example, and the masson pine test block is additionally selected and is subjected to cold soaking treatment for 3min at normal temperature and normal pressure by using the preservative in the above 6 embodiments, and the treated masson pine test block is used as an effect comparison sample of the soaking method and the preservative method in the embodiment;
(2) 2 samples are placed in each culture dish, and then the culture dish is placed in a constant-temperature incubator with the temperature of 25-28 ℃ and the relative humidity of 85% for culture for 4 weeks, and then the infection area and the blue-stain degree of the test bacteria are visually observed.
(3) Classifying the damage value into 5 grades according to whether the surface of the test block is infected by bacteria and the area of the test block covered by mycelium, wherein the classification is shown in table 1, and the lower the damage value is, the higher the prevention and control efficiency is; the results of the bacteriostatic properties of the masson pine wood treated with the preservatives of examples and comparative examples are shown in table 2.
TABLE 1 grading Standard for mildew of test pieces
TABLE 2 bacteriostatic property test results of medicament-treated masson pine test block
Note: 6 examples are compound copper compound preservatives with different concentrations, wherein the comparative examples 1-2 are sodium pentachlorophenol with the mass fraction of 0.05% -0.50%, the comparative example 3 is 8-hydroxyquinoline copper with the mass fraction of 0.50%, the comparative example 4 is tebuconazole with the mass fraction of 0.50%, the comparative example 5 is didecyl dimethyl ammonium chloride with the mass fraction of 20%, the comparative example 6 is glacial acetic acid with the mass fraction of 20%, and the comparative example 7 is a blank control sample treated by clear water.
The experimental results show that the control sample treated with clear water in comparative example 7 has a control efficacy rating of 4 against 5 wood fungi, the control sample treated with 20% acetic acid solution in comparative example 6 has a control efficacy rating of 4 against 5 wood fungi, and the 20% acetic acid solution alone has no control efficacy against wood fungi; the impregnation-treated masson pine wood, the 8-hydroxyquinoline copper mass fraction of the compound copper compound preservative in example 4 was 0.30%, the control efficacy against 5 wood fungi exceeded the control efficacy against the sodium pentachlorophenate in comparative example 2 with a mass fraction of 0.50%, and the control efficacy evaluation value was substantially 0 or 1. In the masson pine wood subjected to dipping and microwave vacuum drying treatment, the mass fraction of 8-hydroxyquinoline copper in the compound copper compound preservative in the embodiment 3 is 0.20%, the control efficiency of 5 wood fungi exceeds that of a single bactericide in comparative examples 1-5, the control efficiency evaluation value is basically 0 grade or 1 grade, the bacteriostatic effective concentration of the preservative prepared by the method is lower than that of the traditional preservative sodium pentachlorophenate, and the bacteriostatic effect is better than that of the sodium pentachlorophenate under the condition of the same concentration. Compared with the pinus massoniana wood subjected to preservative impregnation treatment and microwave vacuum drying treatment, the pinus massoniana wood subjected to preservative impregnation treatment and microwave vacuum drying treatment has the advantages that the control efficiency of 5 wood fungi on the pinus massoniana wood is generally improved under the same concentration condition, and the bacteriostatic ability of a pinus massoniana test material is improved through the microwave vacuum drying treatment. The preservative and the preservation method used in examples 5 and 6 are superior to those of other examples and comparative examples in the effect obtained by treating the masson pine wood.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (1)
1. The anticorrosion method of the compound type cuprammonium preservative for the pinus massoniana wood is characterized by comprising the following steps of: which comprises the following steps:
(1) the compound type coppering compound preservative for the pinus massoniana wood comprises the following raw material components in percentage by mass: 0.40% of 8-hydroxyquinoline copper, 0.40% of tebuconazole, 20.00% of glacial acetic acid, 20.00% of didecyl dimethyl ammonium chloride and the balance of water; weighing the raw materials according to the weight, mixing the 8-hydroxyquinoline copper and glacial acetic acid in a constant-temperature water bath at the temperature of 30 ℃ to fully dissolve the 8-hydroxyquinoline copper, adding tebuconazole, didecyl dimethyl ammonium chloride and water, and uniformly stirring to obtain a compound copper compound preservative;
(2) sawing fresh masson pine, processing into a standard sample, and planing without drying;
(3) cold soaking the masson pine wood at normal temperature and pressure for 3min by using the prepared compound copper preservative;
(4) after the impregnation is finished, cleaning the preservative liquid on the surface of the masson pine wood;
(5) putting the masson pine wood subjected to preservative treatment into a microwave vacuum drying oven, and continuously drying under the environment that the pressure is 0.04MPa, the drying temperature is 60 ℃ and the microwave power is 700-800W until the water content of the masson pine wood is less than 15%;
the microwave working frequency is 2440-;
(6) and (4) stacking the masson pine wood subjected to microwave vacuum drying in an open manner, and placing the masson pine wood in a natural environment.
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| CN100522524C (en) * | 2008-02-05 | 2009-08-05 | 中国林业科学研究院木材工业研究所 | Mildew-resistant epiphyte-proof color changing process method for windmill palm vine material |
| CN102672772A (en) * | 2012-05-08 | 2012-09-19 | 广西壮族自治区林业科学研究院 | Blue stain and mildew preventing processing method for masson pine timber |
| CN104858969A (en) * | 2014-12-22 | 2015-08-26 | 王玉燕 | Environmental protection wood flame retardation antiseptic |
| CN105643760A (en) * | 2015-12-31 | 2016-06-08 | 广西华峰林业集团股份有限公司 | Production method of environment-friendly mildew-proof medium density fiberboard |
| CN107032668A (en) * | 2016-02-04 | 2017-08-11 | 雷学军 | The method of fast-growing carbon remittance grass manufacture construction material and wood substitute |
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2018
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