CN113618863A - Anticorrosive compressed modified wood and preparation method thereof - Google Patents

Anticorrosive compressed modified wood and preparation method thereof Download PDF

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Publication number
CN113618863A
CN113618863A CN202110985999.XA CN202110985999A CN113618863A CN 113618863 A CN113618863 A CN 113618863A CN 202110985999 A CN202110985999 A CN 202110985999A CN 113618863 A CN113618863 A CN 113618863A
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Prior art keywords
wood
preservative
essential oil
modified wood
soak solution
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CN202110985999.XA
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Chinese (zh)
Inventor
许凯
宗子生
张红波
李士杰
卞亚成
陈�光
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Jiangsu Haizhige Furniture Co ltd
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Jiangsu Haizhige Furniture Co ltd
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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • B27M1/02—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by compressing
    • 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
    • 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
    • B27K2240/30—Fireproofing

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

The invention relates to the technical field of wood preservation, in particular to anticorrosive compressed modified wood and a preparation method thereof. The wood preservative comprises wood and a preservative soak solution, wherein the preservative soak solution comprises the following raw materials: the composite preservative is prepared from various preservatives, so that the preservative effect of the preservative soak solution can be further improved, the immersion amount of the wood into the soak solution can be increased through the steps of conventional immersion and hot-pressing immersion, the added flame retardant increases the flame retardance of the preservative soak solution, the added plant synergistic solution has better corrosion resistance and fragrance, and meanwhile, the surface treatment can be performed on the nanoscale magnesium hydroxide, so that the flame retardance of the flame retardant is further enhanced.

Description

Anticorrosive compressed modified wood and preparation method thereof
Technical Field
The invention relates to the technical field of wood preservation, in particular to anticorrosive compressed modified wood and a preparation method thereof.
Background
Along with the improvement of living standard of people, people also put forward higher requirements on the decoration of places such as living, office and activities, and the like, so that the wood is not only attractive and elegant, fashionable, natural and simple, but also healthy and environment-friendly, is one of important raw materials of national construction and daily living goods of people, has obvious biological characteristics, and is easy to be attacked by organisms such as bacteria, insects, marine borers and the like. The long-term use of wood, particularly for long-term outdoor use, is greatly restricted. Spoilage organisms cause the wood to decay, causing it to be destroyed. Before use, proper preservatives are selected according to different application environments and are properly treated, so that the decay of wood can be effectively delayed;
the existing anticorrosion compressed wood has heavier peculiar smell due to the fact that excessive chemical preservatives are added to improve the anticorrosion performance of the wood, and meanwhile, the respective preservatives contain a large amount of oil substances, so that the flame retardance of the wood is greatly reduced, and therefore a novel anticorrosion compressed modified wood is needed to overcome the defects in the prior art.
Disclosure of Invention
The invention aims to provide an anticorrosive compressed modified wood and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the above object, in one aspect, the present invention provides an antiseptic compressed modified wood, comprising wood and an antiseptic soak solution, wherein the antiseptic soak solution comprises the following raw materials: 10-15 parts of compound preservative, 1-5 parts of flame retardant, 20-30 parts of plant synergistic liquid and the balance of deionized water;
the plant synergistic liquid is selected from 1-5% of tea polyphenol, 10-15% of clove essential oil, 1-10% of argy wormwood leaf essential oil and 1-5% of perilla essential oil, and the balance is deionized water.
As a further improvement of the technical scheme, the preservative is selected from a mixture of a plurality of ammonia soluble alkylamine copper, quaternary ammonium salt, boride, copper dimethyldithiocarbamate, oil soluble preservative and organic iodide, and is used for improving the corrosion resistance of wood.
As a further improvement of the technical scheme, the flame retardant is selected from a mixture of multiple kinds of nano antimony trioxide, nano magnesium hydroxide, aluminum hydroxide and zinc borate and is used for improving the flame retardance of the wood.
As a further improvement of the technical scheme, the preparation method of the plant synergistic liquid comprises the following steps: preheating a stirring kettle, adding tea polyphenol, clove essential oil, folium artemisiae argyi essential oil and perilla essential oil into the stirring kettle, adding deionized water, stirring and mixing to prepare plant synergistic liquid, and adding the plant synergistic liquid, so that the corrosion resistance of wood can be improved, and the wood synergistic liquid has a certain fragrance and can cover up peculiar smell generated by a chemical agent on the wood.
In another aspect, the present invention provides a method of producing preserved compressed modified wood, comprising the steps of:
s1, weighing the composite preservative, the flame retardant and the plant synergistic liquid for later use;
s2, preheating the stirring kettle, sequentially adding the composite preservative, the flame retardant and the plant synergistic liquid, and adding deionized water for stirring to prepare an antiseptic soak solution;
s3, adding an antiseptic soak solution into the soaking tank, and then putting wood into the soaking tank for soaking;
and S4, carrying out hot pressing treatment after wood is soaked, pressing through a hot press, and drying to obtain the modified wood.
Preferably, in S2, the preheating temperature of the stirring kettle is 110-130 ℃, and the stirring time is 1-2 h.
Preferably, in S3, before wood soaking, the wood is washed with clean water to remove impurities on the surface of the wood, and then the wood is kept standing for 1-2 hours in a wet state and then soaked, so as to increase the soaking amount of the antiseptic soaking solution.
Preferably, in the step S3, the soaking time is 24-28h, and the temperature of the antiseptic soaking liquid is 60-80 ℃.
Preferably, in S4, the hot pressing temperature is 90-110 ℃, the pressure is 5-10mp, and the time is 8-10 h.
The plant synergistic liquid is added in the invention, so that the antiseptic property is better, and meanwhile, the clove essential oil contains part of eugenol, so that the nano-magnesium hydroxide can be subjected to surface treatment, and the flame retardance of the nano-magnesium hydroxide is further enhanced.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the anticorrosion compression modified wood and the preparation method thereof, the composite preservative is prepared by using various preservatives, so that the anticorrosion effect of the anticorrosion soaking solution can be further improved, and the soaking amount of the wood in the soaking solution can be increased through conventional soaking and hot-pressing soaking steps.
2. According to the anticorrosive compression modified wood and the preparation method thereof, the added flame retardant increases the flame retardance of the anticorrosive soaking solution, and the added plant synergistic solution has better corrosion resistance and fragrance, and can perform surface treatment on the nano-scale magnesium hydroxide, so that the flame retardance of the flame retardant is further enhanced.
Drawings
FIG. 1 is an overall flow diagram of the present invention.
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.
Example 1 a preserved compressed modified wood and method of making the same, comprising:
preparation of plant synergistic liquid
Preheating a stirring kettle, adding 1-5% of tea polyphenol, 10-15% of clove essential oil, 1-10% of argyi leaf essential oil and 1-5% of perilla essential oil into the stirring kettle, adding deionized water, stirring and mixing to prepare plant synergistic liquid, and adding the plant synergistic liquid, so that the preservative property of the wood can be improved, and the wood synergistic liquid has a certain fragrance and can cover up the peculiar smell generated by a chemical agent on the wood.
Second, preparation of soak solution
Weighing the composite preservative, the flame retardant and the plant synergistic liquid for later use;
preheating a stirring kettle at the temperature of 110-.
Third, wood preservative treatment
Washing wood by using purified water to remove impurities on the surface of the wood, keeping the wood in a wet state to stand for 1-2 hours, adding an antiseptic soak solution into a soaking tank, and then soaking the wood for 24-28 hours, wherein the temperature of the antiseptic soak solution is 60-80 ℃; and (3) carrying out hot pressing treatment after the wood is soaked, pressing by using a hot press, and drying to obtain the modified wood, wherein the hot pressing temperature is 90-110 ℃, the pressure is 5-10mp, and the time is 8-10 h.
Example 2 a preserved compressed modified wood and method of making the same, comprising:
preparation of plant synergistic liquid
Preheating a stirring kettle, adding 1-5% of tea polyphenol, 10-15% of clove essential oil, 1-10% of argyi leaf essential oil and 1-5% of perilla essential oil into the stirring kettle, adding deionized water, stirring and mixing to prepare plant synergistic liquid, and adding the plant synergistic liquid, so that the preservative property of the wood can be improved, and the wood synergistic liquid has a certain fragrance and can cover up the peculiar smell generated by a chemical agent on the wood.
Second, preparation of soak solution
Weighing the composite preservative, the flame retardant and the plant synergistic liquid for later use;
preheating a stirring kettle at the temperature of 110-.
Third, wood preservative treatment
Washing wood by using purified water to remove impurities on the surface of the wood, keeping the wood in a wet state to stand for 1-2 hours, adding an antiseptic soak solution into a soaking tank, and then soaking the wood for 24-28 hours, wherein the temperature of the antiseptic soak solution is 60-80 ℃; and (3) carrying out hot pressing treatment after the wood is soaked, pressing by using a hot press, and drying to obtain the modified wood, wherein the hot pressing temperature is 90-110 ℃, the pressure is 5-10mp, and the time is 8-10 h.
Example 3 a preserved compressed modified wood and method of making the same, comprising:
preparation of plant synergistic liquid
Preheating a stirring kettle, adding 1-5% of tea polyphenol, 10-15% of clove essential oil, 1-10% of argyi leaf essential oil and 1-5% of perilla essential oil into the stirring kettle, adding deionized water, stirring and mixing to prepare plant synergistic liquid, and adding the plant synergistic liquid, so that the preservative property of the wood can be improved, and the wood synergistic liquid has a certain fragrance and can cover up the peculiar smell generated by a chemical agent on the wood.
Second, preparation of soak solution
Weighing the composite preservative, the flame retardant and the plant synergistic liquid for later use;
preheating a stirring kettle at the temperature of 110-.
Third, wood preservative treatment
Washing wood by using purified water to remove impurities on the surface of the wood, keeping the wood in a wet state to stand for 1-2 hours, adding an antiseptic soak solution into a soaking tank, and then soaking the wood for 24-28 hours, wherein the temperature of the antiseptic soak solution is 60-80 ℃; and (3) carrying out hot pressing treatment after the wood is soaked, pressing by using a hot press, and drying to obtain the modified wood, wherein the hot pressing temperature is 90-110 ℃, the pressure is 5-10mp, and the time is 8-10 h.
In the above examples 1 to 3, the preservative is selected from a mixture of a plurality of ammonia-soluble alkylamine copper, quaternary ammonium salt, boride, copper dimethyldithiocarbamate, oil-soluble preservative and organic iodide, and is used for improving the corrosion resistance of wood;
the flame retardant is selected from a plurality of mixtures of nano antimony trioxide, nano magnesium hydroxide, aluminum hydroxide and zinc borate and is used for improving the flame retardance of the wood;
the plant synergistic liquid is added in the invention, so that the antiseptic property is better, and meanwhile, the clove essential oil contains part of eugenol, so that the nano-magnesium hydroxide can be subjected to surface treatment, and the flame retardance of the nano-magnesium hydroxide is further enhanced.
The indexes of the anticorrosion compression modified wood prepared by the invention are shown in table 1:
TABLE 1
Figure BDA0003230685400000051
According to table 1, the treatment loss rate of the anticorrosive compressed modified wood prepared by the method is below 5% after corrosion tests of white rot fungi and brown rot fungi; in examples 1-3, the heat resistance temperature of the wood is above 100 ℃, and the oxygen index reaches the flame-retardant standard, so that the anti-corrosion compression modified wood prepared by the invention has better anti-corrosion property and flame retardance. .
Comparative example 1 a compressed wood and a method for preparing the same, comprising:
firstly, preparation of soak solution
Weighing the composite preservative and the flame retardant for later use;
preheating a stirring kettle at the temperature of 110-.
Third, wood preservative treatment
Washing wood by using purified water to remove impurities on the surface of the wood, keeping the wood in a wet state to stand for 1-2 hours, adding an antiseptic soak solution into a soaking tank, and then soaking the wood for 24-28 hours, wherein the temperature of the antiseptic soak solution is 60-80 ℃; and (3) carrying out hot pressing treatment after the wood is soaked, pressing by using a hot press, and drying to obtain the modified wood, wherein the hot pressing temperature is 90-110 ℃, the pressure is 5-10mp, and the time is 8-10 h.
Comparative example 2 a compressed wood and a method for preparing the same, comprising:
preparation of plant synergistic liquid
Preheating a stirring kettle, adding 1-5% of tea polyphenol, 10-15% of clove essential oil, 1-10% of argyi leaf essential oil and 1-5% of perilla essential oil into the stirring kettle, adding deionized water, stirring and mixing to prepare plant synergistic liquid, and adding the plant synergistic liquid, so that the preservative property of the wood can be improved, and the wood synergistic liquid has a certain fragrance and can cover up the peculiar smell generated by a chemical agent on the wood.
Second, preparation of soak solution
Weighing the composite preservative and the plant synergistic liquid for later use;
preheating a stirring kettle at the temperature of 110-.
Third, wood preservative treatment
Washing wood by using purified water to remove impurities on the surface of the wood, keeping the wood in a wet state to stand for 1-2 hours, adding an antiseptic soak solution into a soaking tank, and then soaking the wood for 24-28 hours, wherein the temperature of the antiseptic soak solution is 60-80 ℃; and (3) carrying out hot pressing treatment after the wood is soaked, pressing by using a hot press, and drying to obtain the modified wood, wherein the hot pressing temperature is 90-110 ℃, the pressure is 5-10mp, and the time is 8-10 h.
Comparative example 3
The comparative example provides compressed wood which comprises 12.5 parts of composite preservative, 3 parts of flame retardant and 25 parts of plant synergistic liquid in parts by weight, wherein the plant synergistic liquid is lack of clove essential oil;
compared with example 2, the preparation process is the same.
Comparative example 4
The comparative example provides compressed wood which comprises 12.5 parts of composite preservative, 3 parts of flame retardant and 25 parts of plant synergistic liquid in parts by weight, wherein the plant synergistic liquid is lack of folium artemisiae argyi essential oil;
compared with example 2, the preparation process is the same.
Comparative example 5
The comparative example provides compressed wood which comprises 12.5 parts of composite preservative, 3 parts of flame retardant and 25 parts of plant synergistic liquid in parts by weight, wherein the plant synergistic liquid is lack of tea polyphenol;
compared with example 2, the preparation process is the same.
Comparative example 6
The comparative example provides compressed wood which comprises 12.5 parts of composite preservative, 3 parts of flame retardant and 25 parts of plant synergistic liquid in parts by weight, wherein the plant synergistic liquid is lack of perilla essential oil;
compared with example 2, the preparation process is the same.
The compressed wood prepared by the invention has better corrosion resistance and flame retardance, has a great relationship with the added flame retardant and the plant synergistic liquid, and in order to verify the related technical scheme, the applicant performs the following tests:
comparative examples 1 to 6: by adopting the method of example 2, the prepared compressed wood was tested for relevant indexes under the condition of removing the flame retardant and the plant synergistic liquid, and the specific indexes are shown in table 2:
TABLE 2
Figure BDA0003230685400000071
As shown in table 2, in comparative example 1, the corrosion resistance and the flame retardancy were greatly reduced in the case of removing the plant synergistic solution compared to example 2, in comparative example 2, the flame retardancy was minimized in the case of removing the flame retardant compared to example 2, and in comparative examples 3 to 6, the corrosion resistance and the flame retardancy were reduced to various degrees in the case of removing tea polyphenol, clove essential oil, mugwort essential oil and perilla essential oil from the plant synergistic solution, respectively, and particularly, when the clove essential oil was removed, the corrosion resistance and the flame retardancy were reduced, so it can be seen that the compressed wood prepared in the present invention has better corrosion resistance and flame retardancy.
The compressed wood prepared by the invention has better fragrance, and the relevant indexes of the examples 1-3 and the comparative examples 1-6 are detected, and are shown in the table 3:
TABLE 3
Figure BDA0003230685400000081
As shown in Table 3, examples 1-3 of the invention all have better idea, while comparative examples 1 and 3-6 have poorer fragrance, comparative example 2 has proper standard of fragrance because the plant synergistic liquid is not removed, and comparative examples 3-6 have common fragrance because different components in the plant synergistic liquid are removed respectively, so that the plant synergistic liquid added into the preservative soak solution of the invention is an important factor influencing the fragrance of wood.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. The anticorrosion compression modified wood comprises wood and anticorrosion soak solution, and is characterized in that the anticorrosion soak solution comprises the following raw materials: 10-15 parts of compound preservative, 1-5 parts of flame retardant, 20-30 parts of plant synergistic liquid and the balance of deionized water;
the plant synergistic liquid is selected from 1-5% of tea polyphenol, 10-15% of clove essential oil, 1-10% of argy wormwood leaf essential oil and 1-5% of perilla essential oil, and the balance is deionized water.
2. The preserved compressed modified wood according to claim 1, wherein: the preservative is selected from a mixture of a plurality of ammonia soluble alkylamine copper, quaternary ammonium salt, boride, copper dimethyldithiocarbamate, oil soluble preservative and organic iodide.
3. The preserved compressed modified wood according to claim 1, wherein: the flame retardant is selected from a mixture of multiple kinds of nano antimony trioxide, nano magnesium hydroxide, aluminum hydroxide and zinc borate.
4. The preserved compressed modified wood according to claim 4, wherein: the preparation method of the plant synergistic liquid comprises the following steps: preheating a stirring kettle, adding tea polyphenol, clove essential oil, folium artemisiae argyi essential oil and perilla essential oil into the stirring kettle, adding deionized water, stirring and mixing to obtain the plant synergistic liquid.
5. A process for the preparation of preserved compressed modified wood according to any one of claims 1 to 4, characterized by the steps of:
s1, weighing the composite preservative, the flame retardant and the plant synergistic liquid for later use;
s2, preheating the stirring kettle, sequentially adding the composite preservative, the flame retardant and the plant synergistic liquid, and adding deionized water for stirring to prepare an antiseptic soak solution;
s3, adding an antiseptic soak solution into the soaking tank, and then putting wood into the soaking tank for soaking;
and S4, carrying out hot pressing treatment after wood is soaked, pressing through a hot press, and drying to obtain the modified wood.
6. The method of producing preserved compressed modified wood according to claim 6, wherein: in the S2, the preheating temperature of the stirring kettle is 110-130 ℃, and the stirring time is 1-2 h.
7. The method of producing preserved compressed modified wood according to claim 6, wherein: in the S3, before wood is soaked, the wood is washed by clean water to remove impurities on the surface of the wood, then the wood is kept to stand for 1-2 hours in a wet state, and then soaking is carried out.
8. The method of producing preserved compressed modified wood according to claim 6, wherein: in the step S3, the soaking time is 24-28h, and the temperature of the antiseptic soaking liquid is 60-80 ℃.
9. The method of producing preserved compressed modified wood according to claim 6, wherein: in the step S4, the hot pressing temperature is 90-110 ℃, the pressure is 5-10mp, and the time is 8-10 h.
CN202110985999.XA 2021-08-26 2021-08-26 Anticorrosive compressed modified wood and preparation method thereof Pending CN113618863A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040253470A1 (en) * 2003-06-10 2004-12-16 Aamodt James A. Method for protecting wood and wood products from mold and sapstaining fungi
CN101186045A (en) * 2007-12-25 2008-05-28 北京林业大学 Corrosion prevention compression modified wood and preparation method thereof
CN102894014A (en) * 2012-11-01 2013-01-30 彭万喜 Method for preparing woody antibacterial agent
CN107718207A (en) * 2017-10-30 2018-02-23 南宁科天水性科技有限责任公司 Efficiently wooden fire retardant of a kind of Halogen and its preparation method and application
CN209194921U (en) * 2018-07-31 2019-08-02 浙江良友木业有限公司 A kind of high intensity solid wooden compound floor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040253470A1 (en) * 2003-06-10 2004-12-16 Aamodt James A. Method for protecting wood and wood products from mold and sapstaining fungi
CN101186045A (en) * 2007-12-25 2008-05-28 北京林业大学 Corrosion prevention compression modified wood and preparation method thereof
CN102894014A (en) * 2012-11-01 2013-01-30 彭万喜 Method for preparing woody antibacterial agent
CN107718207A (en) * 2017-10-30 2018-02-23 南宁科天水性科技有限责任公司 Efficiently wooden fire retardant of a kind of Halogen and its preparation method and application
CN209194921U (en) * 2018-07-31 2019-08-02 浙江良友木业有限公司 A kind of high intensity solid wooden compound floor

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RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20211109