CN111349376A - Special epoxy resin composition for repairing tree holes and preparation method thereof - Google Patents
Special epoxy resin composition for repairing tree holes and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/14—Polycondensates modified by chemical after-treatment
- C08G59/1433—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds
- C08G59/1438—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds containing oxygen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/14—Polycondensates modified by chemical after-treatment
- C08G59/1433—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds
- C08G59/1438—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds containing oxygen
- C08G59/145—Compounds containing one epoxy group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/42—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
- C08G59/4215—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof cycloaliphatic
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
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Abstract
The invention relates to the technical field of tree protection, and relates to a special epoxy resin composition for repairing tree holes, which is prepared from the following raw materials in parts by weight: 65-75 parts of epoxy resin; 25-30 parts of furfural; 0.5-2 parts of acetone; 10-25 parts of a filler. Also relates to a preparation method of the special epoxy resin composition for repairing the tree hole, which comprises the following steps: mixing furfural and acetone to form a pre-mixture, dripping sodium hydroxide solution into the pre-mixture until the pre-mixture is boiled, stopping dripping the sodium hydroxide solution, standing for 1-3h after the boiling subsides, adding epoxy resin, and uniformly stirring to form modified epoxy resin; and (2) adding the rest components into the modified epoxy resin, and uniformly stirring and mixing to obtain the special epoxy resin composition for repairing the tree holes. The epoxy resin composition has the effects of improving the oxidation resistance and the tearing strength of the epoxy resin composition and being beneficial to better protecting the ancient and famous trees.
Description
Technical Field
The invention relates to the technical field of tree protection, in particular to an epoxy resin composition special for repairing tree holes and a preparation method thereof.
Background
The ancient tree name wood is a treasure of Chinese nationality, is precious wealth left for our history, is a symbol of long history culture of a country or a region, has immeasurable humanity value and scientific value, has important significance for researching history culture, environment change and plant distribution of the local region, and is a unique and irreplaceable landscape resource. In order to strengthen the protection of the ancient and famous trees, relevant regulations and management methods for the protection of the ancient and famous trees are issued by national forestry authorities, national green committees, ministry of construction and the like, and the legal protection status of the ancient and famous trees is determined. Meanwhile, management departments in various places also set up related protection technical specifications to guide the daily maintenance and rejuvenation of the ancient and famous trees from the technical level.
However, the ancient trees grow for hundreds of years or even thousands of years, the resistance of the ancient trees to external force invasion is reduced, and the ancient trees are affected by factors such as artificial felling, termite damage caused by other diseases and pests, typhoon branches and the like, and the xylem of some ancient trees begins to rot and tree holes appear. On one hand, rotten tree holes influence the growth of ancient trees, trees are easy to rot further to cause lodging, the survival of the trees is threatened, and the life and property safety of local residents is threatened; on the other hand, the ornamental value of the ancient tree is greatly influenced. Therefore, the repair of rotten tree holes has become the focus of the ancient tree name tree protection work.
Because the epoxy resin has the characteristics of strong adhesion, good corrosion resistance, good waterproof effect and the like, the main component of the existing tree hole repairing material is generally the epoxy resin, but the epoxy resin is a high polymer material and has poor oxidation resistance, so that a repairing coating coated on the surface of a tree hole is easy to age and fall off, the repairing effect of the tree hole is easy to influence, and therefore, the improvement space is provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the special epoxy resin composition for repairing the tree hole.
Aiming at the defects in the prior art, the invention also aims to provide a preparation method of the special epoxy resin composition for repairing the tree hole.
The above object of the present invention is achieved by the following technical solutions:
the special epoxy resin composition for repairing the tree hole is prepared from the following raw materials in parts by mass:
65-75 parts of epoxy resin;
25-30 parts of furfural;
0.5-2 parts of acetone;
10-25 parts of a filler.
The present invention in a preferred example may be further configured to: the feed is prepared from the following raw materials in parts by mass:
70 parts of epoxy resin;
29 parts of furfural;
1 part of acetone;
and 18 parts of a filler.
Through adopting above-mentioned technical scheme, cooperate with modified epoxy through furfural and acetone that adopts specific proportion each other, be favorable to improving epoxy resin composition's oxidation resistance better for epoxy resin composition is difficult to age more, makes epoxy resin composition's tear strength be difficult to receive the influence more, thereby makes epoxy resin composition coat in the tree hole surface after, is difficult to drop more, is favorable to protecting ancient and famous trees better.
Meanwhile, the tearing strength of the epoxy resin composition is improved better, so that the epoxy resin composition is not easy to crack after being coated in a tree hole, the service life of the epoxy resin composition is prolonged better, and the ancient and famous trees are protected better.
The present invention in a preferred example may be further configured to: the filler comprises one or more of talcum powder, hard calcium carbonate, zircon powder, bentonite, vermiculite powder, micro silicon powder, kaolin, feldspar powder and mica powder.
By adopting the technical scheme, the filler is formed by compounding one or more of the substances, so that the tear strength of the epoxy resin composition is favorably improved, the epoxy resin composition is not easy to crack after being coated in a tree hole, the service life of the epoxy resin composition is favorably prolonged, and the ancient and famous trees are favorably protected.
The present invention in a preferred example may be further configured to: the filler comprises the following components in parts by mass:
3-10 parts of hard calcium carbonate;
5-10 parts of bentonite;
2-5 parts of feldspar powder.
The present invention in a preferred example may be further configured to: the filler comprises the following components in parts by mass:
6 parts of hard calcium carbonate;
8 parts of bentonite;
4 parts of feldspar powder.
By adopting the technical scheme, the hard calcium carbonate, the bentonite and the feldspar powder in a specific proportion are mutually cooperated to form the filler, so that the tearing strength of the epoxy resin composition is favorably improved, and the epoxy resin composition is less prone to cracking after being coated on a tree hole; meanwhile, the antioxidant property of the epoxy resin composition is favorably and better improved, so that the epoxy resin composition is less prone to aging, the tear strength of the epoxy resin composition is less prone to being affected, the service life of the epoxy resin composition is favorably and better protected from ancient and famous trees.
The present invention in a preferred example may be further configured to: the material also comprises the following raw materials in parts by weight:
1-2 parts of aluminum tripolyphosphate;
0.5-1 part of methyl hexahydrophthalic anhydride;
0.1-0.3 part of citric acid monoglyceride.
Through adopting above-mentioned technical scheme, cooperate mutually through adopting aluminium triphosphate, methyl hexahydrophthalic anhydride and citric acid monoglyceride, be favorable to improving epoxy resin composition's oxidation resistance better for epoxy resin composition is difficult to ageing after coating in the tree hole more, makes epoxy resin composition be difficult to drop more, makes epoxy resin's tear strength be difficult to receive the influence more, is favorable to prolonging epoxy resin composition's life better, is favorable to protecting ancient trees name wood better.
The present invention in a preferred example may be further configured to: the material also comprises the following raw materials in parts by weight:
0.3-0.5 part of lauryl methacrylate.
By adopting the technical scheme, the addition of the lauryl methacrylate is favorable for better improving the tearing strength of the epoxy resin composition, so that the epoxy resin composition is less prone to cracking after being coated in a tree hole, the service life of the epoxy resin composition is favorably prolonged, and the epoxy resin composition is favorable for better protecting ancient and famous trees.
The second aim of the invention is realized by the following technical scheme:
a preparation method of the special epoxy resin composition for repairing tree holes comprises the following steps:
mixing furfural and acetone to form a pre-mixture, dripping sodium hydroxide solution into the pre-mixture until the pre-mixture is boiled, stopping dripping the sodium hydroxide solution, standing for 1-3h after the boiling subsides, adding epoxy resin, and uniformly stirring to form modified epoxy resin;
and (2) adding the rest components into the modified epoxy resin, and uniformly stirring and mixing to obtain the special epoxy resin composition for repairing the tree holes.
By adopting the technical scheme, the epoxy resin is modified by adding the furfural and the acetone firstly, and then the modified epoxy resin is mixed with other components, so that the oxidation resistance of the epoxy resin composition is favorably improved, and meanwhile, the tear strength of the epoxy resin composition is favorably improved better, the epoxy resin composition is enabled to be less prone to cracking while the epoxy resin composition is enabled to be less prone to aging, and the ancient and famous trees are favorably protected by the epoxy resin composition.
The present invention in a preferred example may be further configured to: the mass percentage concentration of the sodium hydroxide solution is 55-62%.
The present invention in a preferred example may be further configured to: the mass percentage concentration of the sodium hydroxide solution is 60%.
By adopting the technical scheme, the quality percentage concentration of the sodium hydroxide solution is controlled, so that the performance of the modified epoxy resin obtained by modification can be better improved, the oxidation resistance of the prepared epoxy resin composition is better, meanwhile, the tearing strength of the epoxy resin composition can be better improved, the epoxy resin composition is less prone to cracking after being coated in a tree hole, and the epoxy resin composition can better protect ancient and famous trees.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the furfural and acetone in a specific proportion are matched with each other in a synergistic manner to modify the epoxy resin, so that the oxidation resistance of the epoxy resin composition is favorably improved, the epoxy resin composition is less prone to aging, the tear strength of the epoxy resin composition is less prone to influence, the epoxy resin composition is less prone to falling off after being coated on the surface of a tree hole, and the ancient and famous trees are favorably protected;
2. the furfural and acetone in a specific proportion are mutually cooperated to modify the epoxy resin, so that the tear strength of the epoxy resin composition is favorably improved, the epoxy resin composition is less prone to cracking after being coated in a tree hole, the service life of the epoxy resin composition is favorably prolonged, and ancient and famous trees are favorably protected;
3. the filler is formed by mutually cooperating the hard calcium carbonate, the bentonite and the feldspar powder in a specific proportion, so that the tearing strength of the epoxy resin composition is favorably improved, the epoxy resin composition is less prone to cracking after being coated in a tree hole, the oxidation resistance of the epoxy resin composition is favorably improved, the epoxy resin composition is less prone to aging, the service life of the epoxy resin composition is favorably prolonged, and ancient and famous trees are favorably protected;
4. by adopting the cooperative coordination of the aluminum tripolyphosphate, the methyl hexahydrophthalic anhydride and the citric acid monoglyceride, the oxidation resistance of the epoxy resin composition is favorably improved, so that the epoxy resin composition is more difficult to oxidize after being coated in tree holes, the epoxy resin composition is less prone to falling off, the service life of the epoxy resin composition is favorably prolonged, and the ancient and famous trees are favorably protected;
5. the epoxy resin is modified by adding the furfural and the acetone firstly, and then the modified epoxy resin is mixed with other components, so that the oxidation resistance of the epoxy resin composition is favorably improved, meanwhile, the tearing strength of the epoxy resin composition is favorably improved, the epoxy resin composition is less prone to cracking while the epoxy resin composition is less prone to aging, and the ancient and famous trees are favorably protected by the epoxy resin composition.
Drawings
FIG. 1 is a process flow diagram of a method for preparing an epoxy resin composition for repairing tree holes in accordance with the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the following examples, as the epoxy resin, E44 of trade company GmbH, Guangzhou, Zheng, having a product number of 61788-97-4 was used.
In the following examples, furfural having a product number of 100 to 52 to 7 was used as furfural.
In the following examples, acetone of 67-64-1 is used as acetone from aeolian chemical limited in the Halling area of Thai.
In the following examples, the talc powder used in the Linyi Gaosheng Minyuan mineral powder factory was 325.
In the following examples, as the hard calcium carbonate, a hard calcium carbonate having a product number of 100, manufactured by polysilica mining Co., Ltd, Gao county was used.
In the following examples, bentonite having a product number of 8440792 from a Bentonite factory co-created in Xinyang Industrial City was used.
In the following examples, the feldspar powder of 9999 available from Hengshio processing Co., Ltd, Chifeng was used.
In the following examples, aluminum tripolyphosphate is available from commercial products of Shanghai Kanji Korea company, Inc. under the trade number 13939-25-8.
In the following examples, methylhexahydrophthalic anhydride, Puyang Puhui electronic materials, Inc., having a product number of 25550-51-0, was used.
In the following examples, citric acid monoglyceride of 36291-32-4, a product number of Zhengzhou Chengwang chemical products Co., Ltd was used.
In the following examples, lauryl methacrylate was obtained from Suzhou Sen Fiddar chemical Co., Ltd under the trade name 142-90-5.
Example 1
Referring to fig. 1, the preparation method of the special epoxy resin composition for repairing tree holes disclosed by the invention comprises the following steps:
and (1) preparing a wide-mouth metal barrel as a reaction vessel, adding furfural and then acetone into the reaction vessel, and stirring and mixing uniformly to form a premix. And then, dropwise adding a sodium hydroxide solution with the mass percentage concentration of 50% into the pre-mixture until the pre-mixture is boiled, stopping adding the sodium hydroxide solution, standing for 1h after the boiling subsides, then adding the epoxy resin, and uniformly stirring and mixing to form the modified epoxy resin.
And (2) adding a filler into the modified epoxy resin, and uniformly stirring and mixing to obtain the special epoxy resin composition for repairing the tree hole.
In this example, the filler is talc.
The raw material components and the content of the special epoxy resin for repairing the tree holes are shown in table 1, and the unit of the content of each component in table 1 is kg.
Example 2
The difference from example 1 is that:
the mass percentage concentration of the sodium hydroxide is 65 percent; after the boiling subsides, the mixture is left for 2 h.
The raw material components and the contents of the special epoxy resin composition for repairing the tree holes are shown in table 1.
Example 3
The difference from example 1 is that:
the mass percentage concentration of the sodium hydroxide is 55 percent; after the boiling subsides, the mixture is left for 2.5 h.
The raw material components and the contents of the special epoxy resin composition for repairing the tree holes are shown in table 1.
Example 4
The difference from example 1 is that:
the mass percentage concentration of the sodium hydroxide is 62 percent; after the boiling subsides, the mixture is left for 3 h.
The raw material components and the contents of the special epoxy resin composition for repairing the tree holes are shown in table 1.
Example 5
The difference from example 1 is that:
the mass percentage concentration of the sodium hydroxide is 60 percent; after the boiling subsides, the mixture is left for 2 h.
The raw material components and the contents of the special epoxy resin composition for repairing the tree holes are shown in table 1.
TABLE 1
| Epoxy resin | Furfural | Acetone (II) | Hard calcium carbonate | |
| Example 1 | 71 | 30 | 0.5 | 15 |
| Example 2 | 68 | 26 | 1.5 | 20 |
| Example 3 | 65 | 25 | 1 | 25 |
| Example 4 | 75 | 28 | 2 | 10 |
| Example 5 | 70 | 29 | 1 | 18 |
Examples 6 to 17
The difference from example 5 is that: the composition of the filler and the content of each component are shown in table 2, and the unit of the content of each component in table 2 is kg.
TABLE 2
Examples 18 to 26
The difference from example 5 is that: aluminum tripolyphosphate, methyl hexahydrophthalic anhydride and citric acid monoglyceride are also added in the step (2).
The raw material components and the contents of the epoxy resin composition special for repairing tree holes are shown in table 3, and the unit of the content of each component in table 3 is kg.
Examples 27 to 30
The difference from example 5 is that: lauryl methacrylate is also added in the step (2).
The raw material components and the contents of the epoxy resin composition special for repairing tree holes are shown in table 4, and the unit of the content of each component in table 4 is kg.
TABLE 4
Examples 31 to 34
The difference from example 5 is that: aluminum tripolyphosphate, methyl hexahydrophthalic anhydride, citric acid monoglyceride and lauryl methacrylate are also added in the step (2).
In the above examples, the filler was a mixture of hard calcium carbonate, bentonite and feldspar powder.
The raw material components and the contents of the epoxy resin composition special for repairing tree holes are shown in table 5, and the unit of the content of each component in table 5 is kg.
TABLE 5
Comparative examples 1 to 5
The difference from example 5 is that: the raw material components and the contents of the epoxy resin composition for repairing tree holes are shown in table 6, and the unit of the content of each component in table 6 is kg.
TABLE 6
| Epoxy resin | Furfural | Acetone (II) | Talcum powder | |
| Comparative example 1 | 100 | 0 | 0 | 18 |
| Comparative example 2 | 99 | 0 | 1 | 18 |
| Comparative example 3 | 71 | 29 | 0 | 18 |
| Comparative example 4 | 70 | 20 | 35 | 18 |
| Comparative example 5 | 70 | 2.5 | 0.5 | 18 |
Experiment 1
Part 1 of the determination of tear resistance of plastic films and sheets according to GB/T16578.1-2008: the tear strength (kN/m) of the epoxy resin composition for repairing tree holes prepared in the above examples and comparative examples was measured by the trouser tear method. Then, the formed special epoxy resin composition for repairing the tree hole is placed in an aging box to be treated for 18 hours, the temperature of the aging box is controlled to be 40 ℃, the humidity of the aging box is controlled to be 90%, the oxygen concentration of the aging box is controlled to be 65%, and finally, the method is determined according to GB/T16578.1-2008, the tearing resistance of plastic films and thin sheets part 1: the trouser tear method detects the tear strength (kN/m) of the epoxy resin composition special for repairing the tree hole after being treated in the ageing oven, and calculates the tear strength change rate (%) of the epoxy resin composition special for repairing the tree hole before and after treatment, wherein the tear strength change rate is calculated according to the following formula:
the data from the above experiments are shown in Table 7.
TABLE 7
According to the comparison of the data of the embodiments 1 to 5 in table 7, the quality percentage concentration of the sodium hydroxide solution is controlled, so that the modification effect of furfural and acetone is favorably promoted, the oxidation resistance and the tear strength of the modified epoxy resin are better, the aging resistance of the epoxy resin composition special for repairing the tree hole is better, the tear strength of the epoxy resin composition special for repairing the tree hole is less susceptible, the service life of the epoxy resin composition special for repairing the tree hole is favorably prolonged, and the ancient and famous trees are favorably protected.
According to the comparison of the data of the examples 5 to 17 in the table 7, the tearing strength of the epoxy resin composition special for repairing the tree hole can be better improved and the service life of the epoxy resin composition special for repairing the tree hole can be better prolonged by controlling the composition of the filler and the dosage ratio of each component, so that the epoxy resin composition special for repairing the tree hole can better protect the ancient and famous trees; meanwhile, only when the hard calcium carbonate, the bentonite and the feldspar powder in a specific proportion are cooperatively matched, the oxidation resistance of the epoxy resin composition special for repairing the tree hole can be better improved, so that the epoxy resin composition special for repairing the tree hole is less prone to aging, the tear strength of the epoxy resin composition special for repairing the tree hole is less prone to being affected, the ancient and famous trees can be better protected, any component is lacked or any proportion is changed, and the oxidation resistance function cannot be achieved.
According to the comparison of the data of the embodiment 5 and the embodiments 18 to 26 in table 7, the aluminum tripolyphosphate, the methylhexahydrophthalic anhydride and the citric acid monoglyceride are adopted to cooperate with each other, so that the antioxidant property of the epoxy resin composition special for tree hole repairing is favorably improved, the epoxy resin composition special for tree hole repairing is more difficult to age, the tear strength of the epoxy resin composition special for tree hole repairing is less easily influenced by time, the service life of the epoxy resin composition special for tree hole repairing is favorably prolonged, ancient famous trees are better protected, any component is absent or any proportion is changed, and the function of improving the antioxidant property of the epoxy resin composition special for tree hole repairing cannot be achieved.
According to the comparison of the data of example 5 and examples 27 to 30 in table 7, the addition of lauryl methacrylate is beneficial to better improve the tear strength of the epoxy resin composition special for cave repair, so that the epoxy resin composition special for cave repair is less prone to crack, and the epoxy resin composition special for cave repair is beneficial to better protect the ancient and famous trees.
According to the comparison of the data of example 5 and comparative examples 1 to 5 in table 7, the antioxidant property and the tear strength of the modified epoxy resin can be better improved only by using the specific ratio of furfural and acetone to cooperate with each other to modify the epoxy resin, so that the antioxidant property and the tear strength of the epoxy resin composition special for repairing the tree holes can be better improved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. The special epoxy resin composition for repairing the tree hole is characterized by comprising the following components in parts by weight: the feed is prepared from the following raw materials in parts by mass:
65-75 parts of epoxy resin;
25-30 parts of furfural;
0.5-2 parts of acetone;
10-25 parts of a filler.
2. The epoxy resin composition for repairing tree holes of claim 1, wherein: the feed is prepared from the following raw materials in parts by mass:
70 parts of epoxy resin;
29 parts of furfural;
1 part of acetone;
and 18 parts of a filler.
3. The epoxy resin composition for repairing tree holes of claim 2, wherein: the filler comprises one or more of talcum powder, hard calcium carbonate, zircon powder, bentonite, vermiculite powder, micro silicon powder, kaolin, feldspar powder and mica powder.
4. The epoxy resin composition for repairing tree holes of claim 2, wherein: the filler comprises the following components in parts by mass:
3-10 parts of hard calcium carbonate;
5-10 parts of bentonite;
2-5 parts of feldspar powder.
5. The epoxy resin composition for repairing tree holes of claim 4, wherein: the filler comprises the following components in parts by mass:
6 parts of hard calcium carbonate;
8 parts of bentonite;
4 parts of feldspar powder.
6. The epoxy resin composition for repairing tree holes of any one of claims 1 to 5, wherein: the material also comprises the following raw materials in parts by weight:
1-2 parts of aluminum tripolyphosphate;
0.5-1 part of methyl hexahydrophthalic anhydride;
0.1-0.3 part of citric acid monoglyceride.
7. The epoxy resin composition for repairing tree holes of any one of claims 1 to 5, wherein: the material also comprises the following raw materials in parts by weight:
0.3-0.5 part of lauryl methacrylate.
8. A method for preparing the special epoxy resin composition for repairing tree holes as claimed in any one of claims 1 to 7, wherein: the method comprises the following steps:
mixing furfural and acetone to form a pre-mixture, dripping sodium hydroxide solution into the pre-mixture until the pre-mixture is boiled, stopping dripping the sodium hydroxide solution, standing for 1-3h after the boiling subsides, adding epoxy resin, and uniformly stirring to form modified epoxy resin;
and (2) adding the rest components into the modified epoxy resin, and uniformly stirring and mixing to obtain the special epoxy resin composition for repairing the tree holes.
9. The method for preparing the epoxy resin composition special for repairing tree holes as claimed in claim 8, wherein the method comprises the following steps: the mass percentage concentration of the sodium hydroxide solution is 55-62%.
10. The method for preparing the epoxy resin composition special for repairing tree holes as claimed in claim 9, wherein: the mass percentage concentration of the sodium hydroxide solution is 60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010378671.7A CN111349376A (en) | 2020-05-07 | 2020-05-07 | Special epoxy resin composition for repairing tree holes and preparation method thereof |
Applications Claiming Priority (1)
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Cited By (1)
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| CN115215608A (en) * | 2022-06-24 | 2022-10-21 | 山东水总有限公司 | Roller compacted concrete for arch dam construction and production process thereof |
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