CN111267194A - Nano-modified environment-friendly waterproof wooden tray and preparation method thereof - Google Patents
Nano-modified environment-friendly waterproof wooden tray and preparation method thereof Download PDFInfo
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- CN111267194A CN111267194A CN202010174309.8A CN202010174309A CN111267194A CN 111267194 A CN111267194 A CN 111267194A CN 202010174309 A CN202010174309 A CN 202010174309A CN 111267194 A CN111267194 A CN 111267194A
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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
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
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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
- B27K3/02—Processes; Apparatus
- B27K3/0207—Pretreatment of wood before impregnation
- B27K3/0214—Drying
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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
- B27K3/02—Processes; Apparatus
- B27K3/04—Impregnating in open tanks
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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
- B27K2240/70—Hydrophobation treatment
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a nano-modified environment-friendly waterproof wooden tray which comprises a wooden tray body, wherein a modified nano waterproof agent is coated on the surface of the wooden tray body. The invention discloses a preparation method of the nano-modified environment-friendly waterproof wooden tray, which comprises the following steps: uniformly mixing hydroxyl silicone oil and hydrogen-containing silicone oil, sequentially adding a surfactant, nano silicon dioxide, nano titanium dioxide and water under stirring, continuously stirring, carrying out ultrasonic treatment and homogenization treatment, then adding zinc nitrate, and uniformly stirring to obtain a modified nano waterproof agent stock solution; and drying the wooden tray body, heating for continuous drying, performing vacuum treatment, continuously drying, performing vacuum treatment, then putting the modified nano waterproof agent stock solution for soaking, taking out the modified nano waterproof agent stock solution for drying, and then drying to constant weight to obtain the nano modified environment-friendly waterproof wooden tray.
Description
Technical Field
The invention relates to the technical field of wooden appliances, in particular to a nano-modified environment-friendly waterproof wooden tray and a preparation method thereof.
Background
Wooden tray is the horizontal platform device who is used for the dress, stacks, the goods and the goods of placing as unit load of transport and transportation, be convenient for load and unload, carry unit goods and materials and small quantity's goods and materials, wooden tray uses the log as the material, carry out drying and sizing processing, reduce moisture, eliminate the internal stress, then carry out finishing processing such as cutting, the plane light, broken end, take out the limit, sand light and form the section bar piece, adopt the penetrating nail that has the anticreep function to bind the section bar piece into semi-manufactured goods tray, carry out finishing at last, anti-skidding processing and sealing wax processing.
Wooden tray is the tray that uses at present most extensively, generally uses timber, metal and fibreboard preparation, and it is extensive in fields such as production, transportation, storage and circulation, and when the tray was fixed better with the goods that transports, can protect commodity, reduces the product loss in transportation and handling process, improves handling efficiency. The existing environment-friendly wooden tray has certain defects when in use, the main components of wood are cellulose, hemicellulose and lignin, the main components contain a large amount of hygroscopic hydroxyl, the wood is easily affected by moisture to cause the problems of dry shrinkage, wet swelling, deformation, cracking and the like, and the use value and the application range of the wood are limited to a certain extent. The wooden tray exposed to the outdoor environment is degraded in surface property and quality under the action of weather factors such as rainwater leaching and humid environment, and the wooden tray is easy to damage articles after being broken, so that certain influence is brought to the transportation of the tray articles.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a nano-modified environment-friendly waterproof wooden tray and a preparation method thereof.
A nano-modified environment-friendly waterproof wooden tray comprises a wooden tray body, wherein a modified nano waterproof agent is coated on the surface of the wooden tray body.
The preparation method of the nano-modified environment-friendly waterproof wooden tray comprises the following steps:
s1, uniformly mixing hydroxyl silicone oil and hydrogen-containing silicone oil, sequentially adding a surfactant, nano silicon dioxide, nano titanium dioxide and water under the stirring state, continuously stirring, performing ultrasonic treatment and homogenization treatment, then adding zinc nitrate, and uniformly stirring to obtain a modified nano waterproof agent stock solution;
and S2, drying the wooden tray body, heating for continuous drying, performing vacuum treatment, continuously drying and vacuum treatment, then putting the wooden tray body into the modified nano waterproof agent stock solution for soaking, taking out the wooden tray body for drying, and then drying the wooden tray body to constant weight to obtain the nano modified environment-friendly waterproof wooden tray.
Preferably, in S1, the ultrasonic treatment time is 5-15min, and the ultrasonic frequency is 15-35 kHz.
Preferably, in S1, the homogenizing treatment time is 2-4 times, and the homogenizing treatment pressure is 30-40 MPa.
Preferably, in S1, the mass ratio of the hydroxyl silicone oil, the hydrogen-containing silicone oil, the surfactant, the nano-silica, the nano-titania, and the zinc nitrate is 100: 15-25: 1-3: 10-14: 1-4: 0.5-2.
Preferably, in S2, the primary drying temperature is 80-90 ℃, and the primary drying time is 80-100 h; the secondary drying temperature is 100-104 ℃, and the secondary drying time is 2-5 h.
Preferably, in S2, the primary vacuum treatment time is 1-2h, and the primary vacuum treatment vacuum degree is 20-30 kpa.
Preferably, in S2, the secondary vacuum treatment is carried out for 20-40min, and the vacuum degree of the secondary vacuum treatment is 10-18 kpa.
Preferably, in S2, the soaking time is 2-4h, and the soaking pressure is 1.4-2 MPa.
Preferably, in S2, the temperature of the third drying is 100-104 ℃, and the time of the third drying is 1-2 h; the fourth drying temperature is 60-80 ℃, and the fourth drying time is 20-30 h; the temperature of the five times of drying is 100-104 ℃.
Preferably, in S2, the surfactant is at least one of calcium stearate, magnesium laurate, sodium lauryl sulfate, sodium dioctyl sulfosuccinate, cocamidopropyl betaine, coco glucoside, lauryl glucoside, cetearyl glucoside, sucrose esters, sorbitan fatty acid, and polysorbate.
The wood tray body is slowly dried at the low temperature of 80-90 ℃ for 80-100h, most of free water in the wood tray body can be uniformly diffused outwards, then the temperature is raised to 100-104 ℃ for continuous drying for 2-5h, the absorbed water in the wood tray body can be pumped out, the vacuum degree is further increased, some free hydroxyl substances in the wood fibers can be pumped out, the hydrophilicity of the wood is further reduced, the density of the wood can be improved, the strength of the wood is enhanced, and the dimensional stability is good; the pretreatment tray body is soaked in the modified nano waterproof agent stock solution, the modified nano waterproof agent is formed by compounding nano silicon dioxide and nano titanium dioxide, the modified nano waterproof agent has a lotus leaf effect, is soaked for 2-4 hours under the pressure of 1.4-2Mpa, zinc nitrate is used as a catalyst, a system is promoted to perform addition reaction, wood enters the wood to react with active hydroxyl in the wood, the micro nano structure with the lotus leaf effect is fixed and adsorbed on the surface of the wood, the adhesiveness is strong, and the waterproof performance is extremely excellent.
The invention has the following beneficial effects:
1. the waterproof wooden tray does not contain harmful chemical substances, does not generate toxicity to human bodies, is safe and environment-friendly, and has lower production cost;
2. the invention improves the waterproof performance of the wood, reduces the moisture absorption performance of the wood, and the surface color of the wood after treatment basically keeps the original color of the wood, and has little influence on the mechanical strength of the wood.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example 1
A preparation method of a nano-modified environment-friendly waterproof wooden tray comprises the following steps:
s1, mixing 10kg of hydroxyl silicone oil and 1.5kg of hydrogen-containing silicone oil uniformly, adding 0.3kg of calcium stearate, 1kg of nano silicon dioxide, 0.4kg of nano titanium dioxide and 20kg of water in sequence under the stirring state, continuously stirring for 20min at the stirring speed of 5000r/min, carrying out ultrasonic treatment for 15min at the ultrasonic frequency of 15kHz, sending the mixture into a high-pressure homogenizer, carrying out homogenization treatment for 2 times at 40MPa, adding 0.2kg of zinc nitrate, and uniformly stirring to obtain a modified nano waterproof agent stock solution;
s2, placing the wooden tray body in a drying box, drying for 100 hours at 80 ℃, heating to 100 ℃ for secondary drying for 5 hours, then carrying out primary vacuum treatment for 1 hour, wherein the primary vacuum treatment vacuum degree is 30kpa, continuing to carry out tertiary drying for 2 hours at 100 ℃, then carrying out secondary vacuum treatment for 20 minutes, wherein the secondary vacuum treatment vacuum degree is 18kpa, then placing the wooden tray body in a modified nano waterproof agent stock solution for soaking for 2 hours, the soaking pressure is 2Mpa, taking out the wooden tray body, then carrying out four-time drying for 30 hours at 60 ℃, and then carrying out five-time drying to constant weight at 100 ℃ to obtain the nano modified environment-friendly waterproof wooden tray.
Example 2
A preparation method of a nano-modified environment-friendly waterproof wooden tray comprises the following steps:
s1, mixing 10kg of hydroxyl silicone oil and 2.5kg of hydrogen-containing silicone oil uniformly, adding 0.1kg of sodium lauryl sulfate, 1.4kg of nano silicon dioxide, 0.1kg of nano titanium dioxide and 30kg of water in sequence under the stirring state, continuously stirring for 10min at the stirring speed of 10000r/min, carrying out ultrasonic treatment for 5min at the ultrasonic frequency of 35kHz, sending the mixture into a high-pressure homogenizer, carrying out homogenization treatment for 4 times at 30MPa, adding 0.05kg of zinc nitrate, and uniformly stirring to obtain a modified nano waterproof agent stock solution;
s2, placing the wooden tray body in a drying box, drying for the first time at 90 ℃ for 80h, heating to 104 ℃ for drying for the second time for 2h, then carrying out vacuum treatment for the first time for 2h, keeping the vacuum degree of the vacuum treatment for the first time at 20kpa, continuing to dry for the third time at 104 ℃ for 1h, then carrying out vacuum treatment for the second time for 40min, keeping the vacuum degree of the vacuum treatment for the second time at 10kpa, then placing the wooden tray body in a modified nano waterproof agent stock solution for soaking for 4h, keeping the soaking pressure at 1.4MPa, taking out the wooden tray body, drying for the fourth time at 80 ℃ for 20h, and then drying for the fifth time at 104 ℃ to constant weight to obtain the.
Example 3
A preparation method of a nano-modified environment-friendly waterproof wooden tray comprises the following steps:
s1, mixing 10kg of hydroxyl silicone oil and 1.8kg of hydrogen-containing silicone oil uniformly, adding 0.25kg of cetearyl glucoside, 1.1kg of nano silicon dioxide, 0.3kg of nano titanium dioxide and 22kg of water in sequence under the stirring state, continuously stirring for 17min at the stirring speed of 6000r/min, carrying out ultrasonic treatment for 12min at the ultrasonic frequency of 20kHz, sending into a high-pressure homogenizer, carrying out homogenization treatment at 37MPa for 2.5 times, adding 0.15kg of zinc nitrate, and uniformly stirring to obtain a modified nano waterproof agent stock solution;
s2, placing the wooden tray body in a drying box, drying for 95h at 82 ℃, heating to 101 ℃ for secondary drying for 4h, carrying out primary vacuum treatment for 1.2h, keeping the vacuum degree of the primary vacuum treatment at 28kpa, continuing to carry out tertiary drying for 1.8h at 101 ℃, carrying out secondary vacuum treatment for 25min, keeping the vacuum degree of the secondary vacuum treatment at 16kpa, then placing the wooden tray body in a modified nano waterproof agent stock solution for soaking for 2.5h, keeping the soaking pressure at 1.8Mpa, taking out, drying for four times at 65 ℃ for 28h, and then drying for five times at 101 ℃ to constant weight to obtain the nano modified environment-friendly waterproof wooden tray.
Example 4
A preparation method of a nano-modified environment-friendly waterproof wooden tray comprises the following steps:
s1, uniformly mixing 10kg of hydroxyl silicone oil and 2.2kg of hydrogen-containing silicone oil, sequentially adding 0.05kg of cocamidopropyl betaine, 0.1kg of sorbitan fatty acid, 1.3kg of nano silicon dioxide, 0.2kg of nano titanium dioxide and 28kg of water under the stirring state, continuously stirring for 13min at the stirring speed of 8000r/min, carrying out ultrasonic treatment for 8min at the ultrasonic frequency of 30kHz, sending into a high-pressure homogenizer, carrying out homogenization treatment for 3.5 times at 33MPa, then adding 0.1kg of zinc nitrate, and uniformly stirring to obtain a modified nano waterproof agent stock solution;
s2, placing the wooden tray body in a drying box, drying for 85 hours at 88 ℃, heating to 103 ℃ for secondary drying for 3 hours, carrying out primary vacuum treatment for 1.8 hours with the primary vacuum treatment vacuum degree of 22kpa, continuing to dry for 1.2 hours at 103 ℃ for three times, carrying out secondary vacuum treatment for 35 minutes with the secondary vacuum treatment vacuum degree of 12kpa, then placing the wooden tray body in modified nano waterproof agent stock solution for soaking for 3.5 hours with the soaking pressure of 1.6Mpa, taking out, drying for 22 hours at 75 ℃ for four times, and then drying for five times at 103 ℃ to constant weight to obtain the nano modified environment-friendly waterproof wooden tray.
Example 5
A preparation method of a nano-modified environment-friendly waterproof wooden tray comprises the following steps:
s1, uniformly mixing 10kg of hydroxyl silicone oil and 2kg of hydrogen-containing silicone oil, sequentially adding 0.1kg of sorbitan fatty acid, 0.1kg of polysorbate, 1.2kg of nano silicon dioxide, 0.25kg of nano titanium dioxide and 25kg of water under stirring, continuously stirring for 15min at the stirring speed of 7000r/min, carrying out ultrasonic treatment for 10min at the ultrasonic frequency of 25kHz, feeding the mixture into a high-pressure homogenizer, carrying out homogenization treatment at 35MPa for 3 times, then adding 0.12kg of zinc nitrate, and uniformly stirring to obtain a modified nano waterproof agent stock solution;
s2, drying the wooden tray body in a drying box for 90 hours at 85 ℃, heating to 102 ℃ for secondary drying for 3.5 hours, then carrying out primary vacuum treatment for 1.5 hours with the vacuum degree of 25kpa, continuing to carry out tertiary drying for 1.5 hours at 102 ℃, then carrying out secondary vacuum treatment for 30 minutes with the vacuum degree of 14kpa, then putting the wooden tray body into the modified nano waterproof agent stock solution for soaking for 3 hours with the soaking pressure of 1.7Mpa, taking out, drying for four times at 70 ℃ for 25 hours, and then drying for five times at 102 ℃ to constant weight to obtain the nano modified environment-friendly waterproof wooden tray.
Comparative example 1
A preparation method of a waterproof wooden tray comprises the following steps:
s1, mixing 10kg of hydroxyl silicone oil and 2kg of hydrogen-containing silicone oil uniformly, adding 0.1kg of sorbitan fatty acid, 0.1kg of polysorbate, 0.25kg of nano titanium dioxide and 25kg of water in sequence under the stirring state, continuously stirring for 15min at the stirring speed of 7000r/min, carrying out ultrasonic treatment for 10min at the ultrasonic frequency of 25kHz, sending into a high-pressure homogenizer, carrying out homogenization treatment for 3 times at 35MPa, adding 0.12kg of zinc nitrate, and uniformly stirring to obtain a stock solution of the waterproof agent;
s2, drying the wooden tray body in a drying box for 90 hours at 85 ℃, heating to 102 ℃ for secondary drying for 3.5 hours, then carrying out primary vacuum treatment for 1.5 hours, keeping the vacuum degree of the primary vacuum treatment at 25kpa, continuing to carry out tertiary drying for 1.5 hours at 102 ℃, then carrying out secondary vacuum treatment for 30min, keeping the vacuum degree of the secondary vacuum treatment at 14kpa, then soaking in the stock solution of the waterproof agent for 3 hours at the soaking pressure of 1.7Mpa, taking out, then drying for 25 hours at 70 ℃ for four times, and then drying for five times at 102 ℃ to constant weight to obtain the waterproof wooden tray.
Comparative example 2
A preparation method of a waterproof wooden tray comprises the following steps:
s1, uniformly mixing 10kg of hydroxyl silicone oil and 2kg of hydrogen-containing silicone oil, sequentially adding 0.1kg of sorbitan fatty acid, 0.1kg of polysorbate and 25kg of water under stirring, continuously stirring for 15min at the stirring speed of 7000r/min, carrying out ultrasonic treatment for 10min at the ultrasonic frequency of 25kHz, sending into a high-pressure homogenizer, carrying out homogenization treatment for 3 times at 35MPa, adding 0.12kg of zinc nitrate, and uniformly stirring to obtain a stock solution of the waterproof agent;
s2, drying the wooden tray body in a drying box for 90 hours at 85 ℃, heating to 102 ℃ for secondary drying for 3.5 hours, then carrying out primary vacuum treatment for 1.5 hours, keeping the vacuum degree of the primary vacuum treatment at 25kpa, continuing to carry out tertiary drying for 1.5 hours at 102 ℃, then carrying out secondary vacuum treatment for 30min, keeping the vacuum degree of the secondary vacuum treatment at 14kpa, then soaking in the stock solution of the waterproof agent for 3 hours at the soaking pressure of 1.7Mpa, taking out, then drying for 25 hours at 70 ℃ for four times, and then drying for five times at 102 ℃ to constant weight to obtain the waterproof wooden tray.
Comparative example 3
A preparation method of a waterproof wooden tray comprises the following steps:
s1, uniformly mixing 10kg of hydroxyl silicone oil and 2kg of hydrogen-containing silicone oil, sequentially adding 0.1kg of sorbitan fatty acid, 0.1kg of polysorbate, 1.2kg of nano silicon dioxide, 0.25kg of nano titanium dioxide and 25kg of water under stirring, continuously stirring for 15min at the stirring speed of 7000r/min, carrying out ultrasonic treatment for 10min at the ultrasonic frequency of 25kHz, sending into a high-pressure homogenizer, carrying out homogenization treatment at 35MPa for 3 times, then adding 0.12kg of zinc nitrate, and uniformly stirring to obtain a stock solution of the waterproof agent;
s2, drying the wooden tray body in a drying oven at 85 ℃ for 90 hours, heating to 102 ℃ for 3.5 hours, then carrying out vacuum treatment for 1.5 hours with the vacuum degree of 25kpa, then putting the wooden tray body into stock solution of the waterproof agent for soaking for 3 hours with the soaking pressure of 1.7Mpa, taking out the wooden tray body, and drying at 102 ℃ to constant weight to obtain the waterproof wooden tray.
The nano-modified environmentally-friendly waterproof wooden tray obtained in example 5 and the waterproof wooden trays obtained in comparative examples 1 to 2 were subjected to performance tests, specifically as follows:
I. water content and water absorption
Determining the water content of the waterproof wooden tray by referring to GB/T1931-2009 method for determining the water content of the wood; the water absorption rates of the above waterproof wooden tray for 6h and 24h were measured with reference to GB/T1934.1-2009 Wood Water absorption measurement method, and the results are shown below:
| water content% | Water absorption of 6 h% | 24h water absorption% | |
| Example 5 | 6.8 | 45.1 | 63.5 |
| Comparative example 1 | 7.6 | 49.7 | 68.5 |
| Comparative example 2 | 8.0 | 50.2 | 70.1 |
| Comparative example 3 | 9.6 | 54.0 | 73.5 |
The above results show that: the waterproof wooden tray treated by the method has excellent waterproof performance, and can obviously reduce the water content and the water absorption of wood.
II. Contact angle
Carrying out oven drying treatment on the waterproof wooden tray; then, the contact angle of each wood with water (deionized water, 2. mu.L per water drop) on three sections (cross section, chord section, and diametral section) was measured using a wood contact angle measuring instrument (OCA 20 model, Dataphysics, Germany).
The contact angle of the wood surface is measured by adopting a dynamic contact angle measuring method, the contact angle value of a water drop on the wood surface after 5 seconds of balance is selected, and the measurement result is shown as follows:
the above results show that: the contact angle between the three sections of the waterproof wooden tray processed by the method and water is obviously improved.
The contact angle of the water drop on the wood surface after 5 seconds of balance is because the wood surface after the water repellent treatment has strong hydrophobicity or the super-hydrophobicity contact angle value of more than 150 degrees, and the water drop can stably keep the spherical state of the water drop on the water repellent treated wood surface. When the surface of the treated material is inclined at a certain angle from a horizontal state, water drops can roll off from the inclined surface of the wood instead of penetrating into the wood, so that the high contact angle value shows that the treated wood has excellent hydrophobicity and a good waterproof effect.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The nanometer modified environment-friendly waterproof wooden tray is characterized by comprising a wooden tray body, wherein the surface of the wooden tray body is coated with a modified nanometer waterproof agent.
2. The preparation method of the nano-modified environment-friendly waterproof wooden tray as claimed in claim 1, which is characterized by comprising the following steps:
s1, uniformly mixing hydroxyl silicone oil and hydrogen-containing silicone oil, sequentially adding a surfactant, nano silicon dioxide, nano titanium dioxide and water under the stirring state, continuously stirring, performing ultrasonic treatment and homogenization treatment, then adding zinc nitrate, and uniformly stirring to obtain a modified nano waterproof agent stock solution;
and S2, drying the wooden tray body, heating for continuous drying, performing vacuum treatment, continuously drying and vacuum treatment, then putting the wooden tray body into the modified nano waterproof agent stock solution for soaking, taking out the wooden tray body for drying, and then drying the wooden tray body to constant weight to obtain the nano modified environment-friendly waterproof wooden tray.
3. The method for preparing the nano-modified environment-friendly waterproof wooden tray as claimed in claim 2, wherein in S1, the ultrasonic treatment time is 5-15min, and the ultrasonic frequency is 15-35 kHz.
4. The method for preparing a nano-modified environmentally friendly waterproof wooden tray as claimed in claim 2, wherein in S1, the number of homogenization treatment is 2-4, and the pressure of the homogenization treatment is 30-40 MPa.
5. The method for preparing the nano-modified environment-friendly waterproof wooden tray as claimed in claim 2, wherein in S1, the mass ratio of hydroxyl silicone oil, hydrogen-containing silicone oil, surfactant, nano silicon dioxide, nano titanium dioxide and zinc nitrate is 100: 15-25: 1-3: 10-14: 1-4: 0.5-2.
6. The method for preparing the nano-modified environment-friendly waterproof wooden tray as claimed in claim 2, wherein in S2, the primary drying temperature is 80-90 ℃ and the primary drying time is 80-100 h; the secondary drying temperature is 100-104 ℃, and the secondary drying time is 2-5 h.
7. The method for preparing the nano-modified environment-friendly waterproof wooden tray as claimed in claim 2, wherein in S2, the primary vacuum treatment time is 1-2h, and the primary vacuum treatment vacuum degree is 20-30 kpa.
8. The method for preparing the nano-modified environment-friendly waterproof wooden tray as claimed in claim 2, wherein in S2, the secondary vacuum treatment is performed for 20-40min, and the vacuum degree of the secondary vacuum treatment is 10-18 kpa.
9. The method for preparing the nano-modified environmentally-friendly waterproof wooden tray as claimed in claim 2, wherein in the step S2, the soaking time is 2-4h, and the soaking pressure is 1.4-2 MPa.
10. The method for preparing the nano-modified environment-friendly waterproof wooden tray as claimed in claim 2, wherein in S2, the third drying temperature is 100 ℃ and 104 ℃, and the third drying time is 1-2 h; the fourth drying temperature is 60-80 ℃, and the fourth drying time is 20-30 h; the temperature of the five times of drying is 100-104 ℃.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112223461A (en) * | 2020-09-28 | 2021-01-15 | 柳州衍生科技有限公司 | Waterproof flame-retardant treatment method for wood building material |
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Application publication date: 20200612 |