CN110946139B - Insect-resist agent, preparation method thereof and application thereof in insect prevention of existing building wood members - Google Patents
Insect-resist agent, preparation method thereof and application thereof in insect prevention of existing building wood members Download PDFInfo
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- CN110946139B CN110946139B CN201911199017.3A CN201911199017A CN110946139B CN 110946139 B CN110946139 B CN 110946139B CN 201911199017 A CN201911199017 A CN 201911199017A CN 110946139 B CN110946139 B CN 110946139B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/36—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
- A01N37/38—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/647—Triazoles; Hydrogenated triazoles
- A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N55/00—Biocides, pest repellants or attractants, or plant growth regulators, containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur
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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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Dentistry (AREA)
- Health & Medical Sciences (AREA)
- Plant Pathology (AREA)
- Pest Control & Pesticides (AREA)
- General Health & Medical Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Forests & Forestry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention provides an insect-resist agent, a preparation method thereof and application thereof in insect prevention of existing building wood members. The insect-resist agent comprises the following components: the composition comprises a triazole compound, fenvalerate, an organic solvent and a surfactant, wherein the mass ratio of the triazole compound to the fenvalerate to the organic solvent to the surfactant is (7-10): (14-18): (25-40): (12-20); the triazole compound is difenoconazole, flusilazole and hexaconazole in a mass ratio of (0.9-1.1): 1: 1 are mixed. The insect-resist agent provided by the invention not only has excellent insect-resist performance, but also has an antiseptic function, and the fenvalerate and triazole compound components in the insect-resist agent have better compatibility. Moreover, when the insect-resist agent is used, effective insect prevention and corrosion prevention of the wood member can be realized under the condition of small drug-loading rate.
Description
Technical Field
The invention belongs to the technical field of wood member insect prevention, and relates to an insect-preventing agent, a preparation method thereof and application thereof in insect prevention of existing building wood members.
Background
Ancient buildings and residences are used as existing buildings, are part of the traditional culture of China, and have precious cultural relic values and historical memories. In these existing buildings, various types of wooden members such as beams and columns are used. The wood members are all made of wood, and are easy to be attacked and parasitized by pests, and common pests comprise bark beetles, bark beetles and the like. Insect pests have been one of the major causes of wood component damage or disease in existing buildings. The larvae of these pests can dig into the interior of the wood and erode, resulting in dense cavities. In addition, due to the existence of the holes, decay fungi can easily enter the interior of the wood member directly, and the inside-out wood decay is generated. Not only the holes but also the induced decay can reduce the bearing capacity of the wood members, thereby not only affecting the durability of the building, but also endangering the safety of the building structure. It is important to treat wood elements against insects.
Copper Chromium Arsenic (CCA) agents have been commonly used in the past for insect control and corrosion protection of wood components. The medicament has high toxicity to people, the treated wood has a service life, the problem of harmless treatment of the treated wood is solved, CCA has great danger to the environment, and the use of CCA is forbidden or strictly limited at home and abroad. The wood components treated by the prior environment-friendly protective agent quaternary Ammonium Copper (ACQ) and the like have the following problems: 1. the preservative mainly aims at the corrosion prevention of fungi and has a certain inhibiting effect on bark beetles; 2. the wood member reaches the service life, and the problem of recycling the solid wood waste copper is solved because the copper is not degraded basically; 3. the surface color of the wood after the ACQ treatment is blue-green, and the wood color cannot be maintained; 4. the ACQ has strong decay, seriously decays metal equipment parts during production, and strongly corrodes metal connection reinforcing parts in existing buildings during application.
At present, the common treatment method for bark beetles in the market is to use the insecticide fenvalerate aqueous emulsion. Fenvalerate is mainly contact poisoning, has stomach toxicity and repelling effect, and has no systemic and fumigating effect. When the harmful insects contact the wooden member, the medicine quickly enters the nervous system of the insect body, shows strong excitement and shaking, quickly enters the whole body to be paralyzed and paralyzed, and finally is knocked down to kill the insects. Fenvalerate is generally treated in the later stages of the emergence of bark beetles. The fenvalerate aqueous emulsion is singly used, has a certain inhibiting effect on microorganisms invading wood members, but cannot radically prevent the growth and the propagation of the microorganisms. If the wood member is subjected to the anticorrosive treatment again, not only the construction process is complicated, but also there are problems of compatibility between the chemicals, cost, and the like.
Disclosure of Invention
Based on the defects of the prior art, the invention aims to provide an insect-resist agent; the invention also aims to provide a preparation method of the insect-resist agent; the invention also aims to provide the application of the insect-resistant agent in the insect resistance of the existing building wood member.
The purpose of the invention is realized by the following technical scheme:
in one aspect, the present invention provides an insect repellent, comprising the following components:
the composition comprises a triazole compound, fenvalerate, an organic solvent and a surfactant, wherein the mass ratio of the triazole compound to the fenvalerate to the organic solvent to the surfactant is (7-10): (14-18): (25-40): (12-20);
wherein the triazole compound is difenoconazole, flusilazole and hexaconazole in a mass ratio of (0.9-1.1): 1: 1 are mixed.
In the insect-resist agent, difenoconazole, flusilazole and hexaconazole triazole compounds are compounded, the triazole compounds can have better compatibility with fenvalerate, and compared with the single azole compounds, the triazole compounds have the advantages of remarkable antibacterial ability, wide antibacterial spectrum and difficult generation of drug resistance of floras in long-term use; the fenvalerate aqueous emulsion is compounded with fenvalerate to play a better synergistic effect, and compared with the single fenvalerate aqueous emulsion on the market, the fenvalerate aqueous emulsion in the insect-proof agent disclosed by the invention has the advantages that on the premise of obtaining the same insect-proof effect, the usage amount of the fenvalerate aqueous emulsion is small, and the environmental pollution is small; can fundamentally prevent the growth and reproduction of microorganisms. Meanwhile, effective insect prevention of the wood member can be realized under the condition of small drug-loading rate of the insect-resist agent, and the wood member coated with the insect-resist agent has corrosion resistance, high safety performance, rain wash resistance, ultraviolet radiation resistance and long service life.
In the above insect-resist agent, preferably, the insect-resist agent comprises the following components by mass percent of 100%: 7 to 10 percent of triazole compound, 14 to 18 percent of fenvalerate, 25 to 40 percent of organic solvent, 12 to 20 percent of surfactant and the balance of water.
Among the above insect repellents, the organic solvent may preferably include ethanol and/or N, N-Dimethylformamide (DMF), etc.
In the insect-resist agent, the organic solvent is preferably a mixture of ethanol and N, N-dimethylformamide in a mass ratio of 1 (1-1.5).
Among the above-mentioned insect-repellent agents, preferably, the surfactant may include a combination of calcium dodecyl diphenyl oxide disulfonate and an emulsifier MOA-20, and the like.
In the above insect-repellent agent, preferably, the mass ratio of the calcium dodecyl diphenyl oxide disulfonate to the emulsifier MOA-20 is (1-1.5): 1.
on the other hand, the invention also provides a preparation method of the insect-resist agent, which comprises the following steps:
adding the triazole compound into a reaction kettle according to a proportion, and then adding an organic solvent to dissolve the triazole compound; then fenvalerate and a surfactant are added and stirred, so that the insect-resist agent is prepared.
In the above preparation method, preferably, the triazole compound is added into the reaction kettle according to the proportion, and then the organic solvent is added to dissolve the triazole compound; and then fenvalerate and a surfactant are added and stirred, and water is added during stirring, so that the insect-resist agent is prepared.
In the above production method, the stirring time is preferably 30min or more and the rotation speed is preferably 1000r/min or more.
In still another aspect, the invention also provides the application of the insect-resist agent in insect prevention of the existing building wood members.
In the above application, preferably, the insect prevention of the existing building wood member includes:
diluting and stirring the insect-resist agent with water to obtain an insect-resist coating liquid; brushing the insect-proof brushing liquid on the surface of the wood member in a brushing or spraying manner; and finally, coating the acrylic polyurethane paint on the surface of the wood member, and naturally drying.
In the application, the insect-proofing brushing liquid is preferably brushed on the surface of the wood member by brushing or spraying for more than 3 times, and the brushing interval time is 6 hours each time.
In the application, preferably, the insect-proofing agent is added into water to 16-20 times of the mass of the insect-proofing agent, and the mixture is stirred for more than 30 minutes by using a stirrer to form the wood member insect-proofing coating liquid. And determining the brushing area of the wood member of the insect-proof object, and calculating the brushing amount according to 250-300 g of solution per square meter. The brushing amount is divided into more than 3 equal parts on average, and the specific number of the equal parts is measured by unnatural sagging. Each aliquot was brushed or sprayed evenly on the surface of the wood member to be painted, each aliquot being brushed at 6 hour intervals. And finally brushing acrylic polyurethane paint with the solid content of 65%, brushing the wood member subjected to insect prevention treatment according to 80-100 ml per square meter, and naturally drying for more than 4 hours.
The invention has the beneficial effects that:
the insect-resist agent provided by the invention not only has excellent insect-resist performance, but also has an antiseptic function, and the fenvalerate and triazole compound components in the insect-resist agent have better compatibility. Moreover, when the insect-resist agent is used, effective insect prevention and corrosion prevention of the wood member can be realized under the condition of small drug-loading rate.
Detailed Description
The technical solutions of the present invention will be described in detail below in order to clearly understand the technical features, objects, and advantages of the present invention, but the present invention is not limited to the practical scope of the present invention.
Example 1
The embodiment provides an insect-resist agent and a preparation method thereof, wherein the preparation method of the insect-resist agent comprises the following steps:
weighing 175g of 99% difenoconazole, 180g of 95% flusilazole and 180g of 95% hexaconazole, placing the weighed materials into a 20L reaction kettle, adding 956g of 95% ethanol and 1148g of 99% DMF, dissolving the difenoconazole/flusilazole/hexaconazole composition, then adding 1157g of 90% fenvalerate, 1195g of 50% calcium dodecyl diphenylsulfonate and 1435g of 30% MOA-20 and 715g of water, and stirring the mixture by using a stirrer for more than 30 minutes at the rotating speed of more than 1000r per minute. And stirring uniformly to obtain the insect-proof anticorrosive aqueous emulsion which is marked as an insect-proof agent A. The insect-resist agent A comprises the following components in percentage by weight: fenvalerate is 14.6%, difenoconazole/flusilazole/hexaconazole is 7.2%, ethanol and DMF is 28.6%, and calcium dodecyl diphenyl sulfonate and MOA-20 are 14.4%.
Example 2
The embodiment provides an insect-resist agent and a preparation method thereof, wherein the preparation method of the insect-resist agent comprises the following steps:
weighing 175g of 99% difenoconazole, 185g of 95% flusilazole and 185g of 95% hexaconazole, placing the weighed materials into a 20L reaction kettle, adding 717g of 95% ethanol and 861g of 99% DMF, dissolving the difenoconazole/flusilazole/hexaconazole composition, adding 970g of 90% fenvalerate, 875g of 50% calcium dodecyl diphenylsulfonate and 1051g of 30% MOA-20, 715g of water, and stirring the mixture by using a stirrer for more than 30 minutes at a rotating speed of more than 1000r per minute. And stirring uniformly to obtain the insect-proof anticorrosive aqueous emulsion which is marked as an insect-proof agent B. The insect-resist agent B comprises the following components in percentage by weight: fenvalerate 15.2%, difenoconazole/flusilazole/hexaconazole 9.1%, ethanol and DMF 26.8%, and calcium dodecyl diphenyl sulfonate and MOA-20 13.1%.
Application example
The insect-resist agent prepared in the embodiments 1 and 2 of the invention is coated on the surface of the larch ancient wood member in North China, and the specific method comprises the following steps:
adding the insect-resist agent into water to 20 times of the mass of the insect-resist agent, and stirring the mixture for more than 30 minutes by using a stirrer to form the wood member insect-resist coating liquid. And determining the brushing area of the wood member of the insect-proof object, and calculating the brushing amount according to 250-300 g of solution per square meter. The brushing amount is divided into more than 3 equal parts on average, and the specific number of the equal parts is measured by unnatural sagging. Each aliquot was brushed or sprayed evenly on the surface of the wood member to be painted, each aliquot being brushed at 6 hour intervals. And finally brushing acrylic polyurethane paint with the solid content of 65%, brushing the wood member subjected to insect prevention treatment according to 80-100 ml per square meter, and naturally drying for more than 4 hours.
White rot fungi (Coriolus versicolor) and brown rot fungi (Poria plantata) are taken as wood rot fungi, an industry standard LY/T1283 & lt 2011 & gt laboratory test method for toxicity of wood preservatives to rot fungi is adopted, and the experimental results are shown in Table 1:
table 1:
from the experimental data in table 1, it can be seen that: the three reagents prepared by the test all show excellent corrosion resistance. The drug loading is 5.4-9.0 g/m3In the case of (2), the mass loss rate (ML) is less than 5%.
The wood members treated in the above examples 1 and 2 were placed in the shanxi changzhi prefecture. The test period is 24 months according to GB/T13942.2-2009 Wood Natural durability test method-Wood Natural durability field test method. The results of the experiment are shown in table 2 below:
table 2:
from the experimental data in table 2, it can be seen that: the three reagents prepared by the test all show excellent insect resistance. The drug loading is 5.41-8.21 g/m3The fenvalerate drug loading is 10.9-13.71 g/m3Under the condition of low concentration, the insect-resistant grade of the test material is 10, the insect-resistant grade of the fenvalerate-free material in the control group is 8, and the insect-resistant grade of the single fenvalerate-applied material is 9, which shows that the insect-resistant agent has advantages in the insect-resistant aspect compared with the single-component insect-resistant agent.
The results of the compatibility experiments are shown in table 3 below:
table 3:
in summary, the following steps: the insect-resist agent provided by the invention not only has excellent insect-resist performance, but also has an antiseptic function, and the fenvalerate and triazole compound components in the insect-resist agent have better compatibility. Moreover, when the insect-resist agent is used, effective insect prevention and corrosion prevention of the wood member can be realized under the condition of small drug-loading rate.
Claims (1)
1. Use of an insect repellent for existing building wood elements for repelling insects on existing building wood elements, wherein:
the insect-resist agent comprises the following components by mass percent of 100 percent:
7 to 10 percent of triazole compound, 14 to 18 percent of fenvalerate, 25 to 40 percent of organic solvent, 12 to 20 percent of surfactant and the balance of water;
wherein the triazole compound is difenoconazole, flusilazole and hexaconazole in a mass ratio of (0.9-1.1): 1: 1, mixing;
the organic solvent is ethanol and N, N-dimethylformamide in a mass ratio of 1: (1-1.5) mixing;
the surfactant is calcium dodecyl diphenyl oxide disulfonate and an emulsifier MOA-20 in a mass ratio of (1-1.5): 1, mixing;
the insect prevention of the existing building wood member comprises the following steps:
adding the insect-resist agent into water to 16-20 times of the mass of the insect-resist agent, and stirring for more than 30 minutes by using a stirrer to form an insect-resist coating liquid for the wood member;
determining the painting area of the wood member of the insect-proof object, and calculating the painting amount according to 250-300 g of solution per square meter;
evenly dividing the brushing amount into more than 3 equal parts, wherein the specific number of the equal parts is measured by unnatural sagging;
uniformly brushing or spraying each equal part on the surface of the wood member to be coated, wherein the brushing interval of each equal part is 6 hours;
and finally brushing acrylic polyurethane paint with the solid content of 65%, brushing the wood member subjected to insect prevention treatment according to 80-100 ml per square meter, and naturally drying for more than 4 hours.
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| CN111993510B (en) * | 2020-09-03 | 2021-08-20 | 深圳市来成号古建筑工程有限公司 | In-situ anticorrosion method for wooden member ancient building |
| CN114932603B (en) * | 2022-06-07 | 2023-05-12 | 广西亿松木业有限公司 | Preparation method of insect-proof plywood |
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| 三唑制剂的防腐及防白蚁性能;席丽霞等;《林业科学》;20130715;第49卷(第7期);第123-128页 * |
| 高氰戊菊醋(SumialPha5FL)防治白蚁试验(l)室内木材处理;张方耀等;《华东昆虫学报》;19950630;第4卷(第1期);第96-98页 * |
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