CN111113598A - Aging-resistant treatment process for improving balsawood by nano ZnO coating - Google Patents

Aging-resistant treatment process for improving balsawood by nano ZnO coating Download PDF

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Publication number
CN111113598A
CN111113598A CN201911347124.6A CN201911347124A CN111113598A CN 111113598 A CN111113598 A CN 111113598A CN 201911347124 A CN201911347124 A CN 201911347124A CN 111113598 A CN111113598 A CN 111113598A
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China
Prior art keywords
balsawood
treatment
drying
dipping
nano
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CN201911347124.6A
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Chinese (zh)
Inventor
张旭鹏
张磊
陈刚
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Jiangsu Lindeman New Material Technology Co Ltd
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Jiangsu Lindeman New Material Technology Co Ltd
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Priority to CN201911347124.6A priority Critical patent/CN111113598A/en
Publication of CN111113598A publication Critical patent/CN111113598A/en
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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
    • 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
    • B27K3/007—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process employing compositions comprising nanoparticles
    • 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
    • B27K3/025—Controlling the process
    • 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
    • B27K3/16—Inorganic impregnating agents
    • B27K3/22—Compounds of zinc or copper
    • 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
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C
    • 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
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/04—Combined bleaching or impregnating and drying of wood

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)

Abstract

The invention discloses a processing technology for improving the aging resistance of balsawood by nano ZnO coating, which comprises the steps of firstly placing balsawood in a drying box, wherein the processing temperature ranges from 60 ℃ to 110 ℃, the processing time is 2-24 hours, then placing the balsawood subjected to heat treatment in a nano ZnO suspension liquid for dipping treatment, in order to ensure the stability of the ZnO suspension liquid, stirring by adopting a stirring device in the dipping process, wherein the processing temperature is 30-50 ℃, the processing time is 1-2 days, placing a balsawood sample subjected to dipping treatment in a blast drier for drying treatment, preserving heat for 12-36 hours at the temperature of 80 ℃ below, cooling to the room temperature along with a furnace, and finally drying until the weight of the sample is unchanged. The invention can realize the anti-aging treatment of the balsawood, and has simple process and convenient operation.

Description

Aging-resistant treatment process for improving balsawood by nano ZnO coating
Technical Field
The invention relates to the technical field of material aging resistance treatment, in particular to an aging resistance treatment process for improving balsawood by using a nano ZnO coating.
Background
The balsawood (Ochroma pramidale) is the lightest wood in nature and one of the fastest growing tree species in the world, can be harvested in 5 years and has the average accumulation of 400 m3/hm2. Like other fast-growing tree species, balsawood also has the defects of loose wood, low strength, easy decay and the like. When the wood is used as indoor and outdoor materials, the wood is often affected by ambient environmental factors to cause deterioration, and particularly, the surface of the outdoor material is slowly and complexly physically and chemically changed under the action of solar radiation, so that the color of the wood is changed. The color change not only affects the quality of the wood and the aesthetic feeling, but also greatly reduces the application range of the wood and affects the durability of the wood. Under natural conditions, particularly under the conditions of damp heat in summer and dry cold in winter, the attenuation of the physical and mechanical properties of the wood product directly determines the service life of the wood product as an outdoor material. The wood is an environment-friendly material, compared with other building materials, the felling cost is low, the transportation and the processing are easy, the environmental pollution is small, and the wood can be recycled. Therefore, it is necessary to develop the light aging research of wood, and the nano-oxidation material can effectively improve the physical and mechanical properties of balsawood.
Zinc oxide is an important and widely used physical sunscreen agent, and the principle of screening ultraviolet rays is absorption and scattering. Zinc oxide belongs to an N-type semiconductor, and electrons in the valence band can undergo energy transition in ultraviolet rays, which is the principle of absorption of ultraviolet rays. The function of scattering ultraviolet rays is related to the particle size of the material, and when the size is much smaller than the wavelength of ultraviolet rays, the particles can scatter the ultraviolet rays acting thereon in all directions, thereby reducing the intensity of the ultraviolet rays in the irradiation direction. The smaller the size, the better the anti-aging performance. Nano zinc oxide is a stable compound that can provide broad spectrum ultraviolet protection (UVA and UVB).
Disclosure of Invention
The invention aims to provide a treatment process for improving the aging resistance of balsawood by using a nano ZnO coating, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a treatment process for improving the aging resistance of balsawood by nano ZnO coating comprises the following steps:
A. firstly, putting the balsawood in a drying box;
B. then, placing the balsawood subjected to heat treatment in a nano zinc oxide suspension solution for dipping treatment;
C. drying the balsawood sample after the dipping treatment in a blast drier;
D. finally drying until the weight of the sample is unchanged.
Preferably, the treatment temperature of the drying box in the step A ranges from 60 to 110 ℃, and the treatment time is 2 to 24 hours.
Preferably, the balsawood in the step B is subjected to dipping treatment by using a nano zinc oxide suspension solution, wherein the weight ratio of ZnO is 2-5%, the treatment temperature is 30-50 ℃, and the treatment time is 1-2 days; stirring by a stirring device is adopted during the impregnation process.
Preferably, in the step C, the drying temperature is 80-90 ℃, and the drying time is 12-36 h.
Compared with the prior art, the invention has the beneficial effects that: according to the aging-resistant treatment process of the balsawood, the absolute dry density of the balsawood is only 0.16 g/cm3The structure is loose, and the balsawood has better impregnation performance and is beneficial to the entering of a nano zinc oxide suspension solution. The invention has simple treatment process, safe and reliable treatment, no harmful gas release and convenient operation, and the obtained balsawood has good aging resistance.
Drawings
FIG. 1 is an SEM image of ZnO nanoparticles of the present invention.
FIG. 2 is a graph showing the total color difference before and after the nano zinc oxide treatment of the balsawood.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-2, the present invention provides a technical solution: a treatment process for improving the aging resistance of balsawood by nano ZnO coating comprises the following steps:
A. firstly, putting the balsawood in a drying box;
B. then, placing the balsawood subjected to heat treatment in a nano zinc oxide suspension solution for dipping treatment;
C. drying the balsawood sample after the dipping treatment in a blast drier;
D. finally drying until the weight of the sample is unchanged.
In the embodiment, the treatment temperature of the drying box in the step A ranges from 60 to 110 ℃, and the treatment time is 6 hours.
In the embodiment, the balsawood in the step B is subjected to dipping treatment by using a nano zinc oxide suspension solution, wherein the weight ratio of ZnO is 2 percent, the treatment temperature is 50 ℃, and the treatment time is 1 day; stirring by a stirring device is adopted during the impregnation process.
In this example, the drying temperature in step C was 80 ℃ and the drying time was 12 hours.
Example two:
a treatment process for improving the aging resistance of balsawood by nano ZnO coating comprises the following steps:
A. firstly, putting the balsawood in a drying box;
B. then, placing the balsawood subjected to heat treatment in a nano zinc oxide suspension solution for dipping treatment;
C. drying the balsawood sample after the dipping treatment in a blast drier;
D. finally drying until the weight of the sample is unchanged.
In this example, the temperature range of the drying box in step A was 80 ℃ and the treatment time was 4 hours.
In the embodiment, the balsawood in the step B is subjected to nano zinc oxide suspension solution dipping treatment, the weight ratio of ZnO is 3 percent, the treatment temperature is 30 ℃, and the treatment time is 2 days; stirring by a stirring device is adopted during the impregnation process.
In this example, the drying temperature in step C was 80 ℃ and the drying time was 24 hours.
Example three:
a treatment process for improving the aging resistance of balsawood by nano ZnO coating comprises the following steps:
A. firstly, putting the balsawood in a drying box;
B. then, placing the balsawood subjected to heat treatment in a nano zinc oxide suspension solution for dipping treatment;
C. drying the balsawood sample after the dipping treatment in a blast drier;
D. finally drying until the weight of the sample is unchanged.
In this example, the temperature range of the drying box in step A was 80 ℃ and the treatment time was 4 hours.
In the embodiment, the balsawood in the step B is subjected to dipping treatment by using a nano zinc oxide suspension solution, wherein the weight ratio of ZnO is 4 percent, the treatment temperature is 40 ℃, and the treatment time is 1.5 days; stirring by a stirring device is adopted during the impregnation process.
In this example, the drying temperature in step C was 80 ℃ and the drying time was 24 hours.
Example four:
a treatment process for improving the aging resistance of balsawood by nano ZnO coating comprises the following steps:
A. firstly, putting the balsawood in a drying box;
B. then, placing the balsawood subjected to heat treatment in a nano zinc oxide suspension solution for dipping treatment;
C. drying the balsawood sample after the dipping treatment in a blast drier;
D. finally drying until the weight of the sample is unchanged.
In the embodiment, the treatment temperature of the drying box in the step A ranges from 70 ℃, and the treatment time is 6 h.
In the embodiment, the balsawood in the step B is subjected to nano zinc oxide suspension solution dipping treatment, wherein the weight ratio of ZnO is 3%, the treatment temperature is 45 ℃, and the treatment time is 1 day; stirring by a stirring device is adopted during the impregnation process.
In this example, the drying temperature in step C was 88 ℃ and the drying time was 14 hours.
Example five:
a treatment process for improving the aging resistance of balsawood by nano ZnO coating comprises the following steps:
A. firstly, putting the balsawood in a drying box;
B. then, placing the balsawood subjected to heat treatment in a nano zinc oxide suspension solution for dipping treatment;
C. drying the balsawood sample after the dipping treatment in a blast drier;
D. finally drying until the weight of the sample is unchanged.
In this example, the temperature range of the drying box in step A was 100 ℃ and the treatment time was 3 hours.
In the embodiment, the balsawood in the step B is subjected to dipping treatment by using a nano zinc oxide suspension solution, wherein the weight ratio of ZnO is 4%, the treatment temperature is 38 ℃, and the treatment time is 2 days; stirring by a stirring device is adopted during the impregnation process.
In this example, the drying temperature in step C was 82 ℃ and the drying time was 22 hours.
Example six:
a treatment process for improving the aging resistance of balsawood by nano ZnO coating comprises the following steps:
A. firstly, putting the balsawood in a drying box;
B. then, placing the balsawood subjected to heat treatment in a nano zinc oxide suspension solution for dipping treatment;
C. drying the balsawood sample after the dipping treatment in a blast drier;
D. finally drying until the weight of the sample is unchanged.
In this example, the temperature range of the drying box in step A was 75 ℃ and the treatment time was 10 hours.
In the embodiment, the balsawood in the step B is subjected to dipping treatment by using a nano zinc oxide suspension solution, wherein the weight ratio of ZnO is 5 percent, the treatment temperature is 42 ℃, and the treatment time is 1 day; stirring by a stirring device is adopted during the impregnation process.
In this example, the drying temperature in step C was 88 ℃ and the drying time was 20 hours.
Example seven:
a treatment process for improving the aging resistance of balsawood by nano ZnO coating comprises the following steps:
A. firstly, putting the balsawood in a drying box;
B. then, placing the balsawood subjected to heat treatment in a nano zinc oxide suspension solution for dipping treatment;
C. drying the balsawood sample after the dipping treatment in a blast drier;
D. finally drying until the weight of the sample is unchanged.
In this example, the temperature range of the drying box in step A was 85 ℃ and the treatment time was 7 hours.
In the embodiment, the balsawood in the step B is subjected to nano zinc oxide suspension solution dipping treatment, the weight ratio of ZnO is 3 percent, the treatment temperature is 40 ℃, and the treatment time is 2 days; stirring by a stirring device is adopted during the impregnation process.
In this example, the drying temperature in step C was 85 ℃ and the drying time was 22 hours.
In conclusion, according to the aging-resistant treatment process for the balsawood, the absolute dry density of the balsawood is only 0.16 g/cm3The structure is loose, and the balsawood has better impregnation performance and is beneficial to the entering of a nano zinc oxide suspension solution. The invention has simple treatment process, safe and reliable treatment, no harmful gas release and convenient operation, and the obtained balsawood has good aging resistance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. A treatment process for improving the aging resistance of balsawood by nano ZnO coating is characterized by comprising the following steps: the method comprises the following steps:
A. firstly, putting the balsawood in a drying box;
B. then, placing the balsawood subjected to heat treatment in a nano zinc oxide suspension solution for dipping treatment;
C. drying the balsawood sample after the dipping treatment in a blast drier;
D. finally drying until the weight of the sample is unchanged.
2. The nano ZnO coating aging resistance improving treatment process of balsawood according to claim 1, characterized in that: in the step A, the treatment temperature of the drying box ranges from 60 to 110 ℃, and the treatment time is 2 to 24 hours.
3. The nano ZnO coating aging resistance improving treatment process of balsawood according to claim 1, characterized in that: b, dipping the balsawood in a nano zinc oxide suspension solution, wherein the weight ratio of ZnO is 2-5%, the treatment temperature is 30-50 ℃, and the treatment time is 1-2 days; stirring by a stirring device is adopted during the impregnation process.
4. The nano ZnO coating aging resistance improving treatment process of balsawood according to claim 1, characterized in that: and in the step C, the drying temperature is 80-90 ℃, and the drying time is 12-36 h.
CN201911347124.6A 2019-12-24 2019-12-24 Aging-resistant treatment process for improving balsawood by nano ZnO coating Pending CN111113598A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112045812A (en) * 2020-07-27 2020-12-08 安徽阜南县万家和工艺品有限公司 Treatment process for improving cool contact feeling of wicker deck chair
CN113400428A (en) * 2021-06-10 2021-09-17 广东省林业科学研究院 Method for enhancing corrosion resistance and termite resistance of wood by using nano zinc oxide

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112045812A (en) * 2020-07-27 2020-12-08 安徽阜南县万家和工艺品有限公司 Treatment process for improving cool contact feeling of wicker deck chair
CN113400428A (en) * 2021-06-10 2021-09-17 广东省林业科学研究院 Method for enhancing corrosion resistance and termite resistance of wood by using nano zinc oxide

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