CN108997935A - A kind of modified raw lacquer composite coating and preparation method thereof - Google Patents
A kind of modified raw lacquer composite coating and preparation method thereof Download PDFInfo
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- CN108997935A CN108997935A CN201810514265.1A CN201810514265A CN108997935A CN 108997935 A CN108997935 A CN 108997935A CN 201810514265 A CN201810514265 A CN 201810514265A CN 108997935 A CN108997935 A CN 108997935A
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- China
- Prior art keywords
- raw lacquer
- ethanol solution
- composite coating
- aqueous polyurethane
- lignin
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Classifications
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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
- C09D193/00—Coating compositions based on natural resins; Coating compositions based on derivatives thereof
-
- 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
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of modified raw lacquer composite coating, raw material includes: lignin, aqueous polyurethane, purification raw lacquer, metal ethanol solution, graphene；Wherein, the volume ratio of the aqueous polyurethane, raw lacquer and metal ethanol solution is 2-3:4-7:1；The weight ratio of the raw lacquer and lignin is 10-15:1.The invention also discloses a kind of preparation methods of modified raw lacquer composite coating.The present invention is that raw material is prepared modified raw lacquer composite coating using lignin, aqueous polyurethane, purification raw lacquer, metal ethanol solution, graphene, the performances such as drying time of the invention, adhesive force, hardness be improved significantly, it is heat-resisting good with alkali resistance.
Description
Technical field
The present invention relates to technical field of coatings, and in particular to a kind of modified raw lacquer composite coating and preparation method thereof.
Background technique
Raw lacquer is the secretion of lacquer tree, has corrosion resistant, wear-resisting, acidproof, solvent resistant, heat-resisting, water proof and good insulating, rich
The superperformances such as gloss are known as the laudatory title of " king of coating ", are military project, industrial equipment, capital construction, artifacts and civilian family
One of the high-quality coating of tool etc. and the valuable cargo of China's conventional outlet.But due to containing a large amount of phenolic hydroxyl group in laccol,
Leading to raw lacquer, there are some disadvantages, such as have serious allergy toxicity to human body, and in addition raw lacquer drying time is long, and large viscosity is not easy
Construction, bad to metal adhesion, alkali resistance is poor, these seriously limit its application range.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of modified raw lacquer composite coating and its preparation sides
Method, the performances such as drying time of the invention, adhesive force, hardness be improved significantly, heat-resisting and alkali resistance is good.
The invention proposes a kind of modified raw lacquer composite coating, raw material includes lignin, aqueous polyurethane, refined raw
Paint, metal ethanol solution, graphene；Wherein, the volume ratio of the aqueous polyurethane, raw lacquer and metal ethanol solution is 2-3:4-
7:1；The weight ratio of the purification raw lacquer and lignin is 10-15:1.
Preferably, the metal ethanol solution includes FeCl3Ethanol solution and SnCl2Ethanol solution.
Preferably, the FeCl3Ethanol solution is the FeCl of 20-30wt%3Ethanol solution.
Preferably, the SnCl2Ethanol solution is the SnCl of 5-10wt%2Ethanol solution.
Preferably, the FeCl3Ethanol solution and SnCl2The volume ratio of ethanol solution is 5-10:1-3.
Preferably, the weight ratio of the graphene and aqueous polyurethane is 0.3-1:100.
The invention also provides a kind of preparation methods of modified raw lacquer composite coating, include the following steps:
Metal ethanol solution is added into purification raw lacquer, after being stirred to react 40-60min, addition lignin, pressurized, heated,
1-2h is reacted at 50-70 DEG C, and aqueous polyurethane is then added and is stirred to react 1-3h, obtains modified raw lacquer composite coating.
It is prepared into the present invention using lignin, aqueous polyurethane, purification raw lacquer, metal ethanol solution, graphene as raw material
To modified raw lacquer composite coating, metal ion prepares compound painting as catalyst, wherein being modified using lignin to raw lacquer
Expect, the laccol in raw lacquer can generate stable complex with metal ion, and the phenol hydroxyl in lignin and lignin is then added
Etherification reaction occurs for base, and stronger hydrogen bond action is formd between lignin and laccol, is closely linked, life is improved
The performances such as drying time, adhesive force, hardness, the impact resistance of paint, hence it is evident that heat-resisting and alkali resistance of the invention is improved, this is because
Phenolic hydroxyl group and lignin on laccol phenyl ring are acted on, therefore prevent reacting for alkali and phenolic hydroxyl group, and make its alkaline-resisting energy
Power is improved, in addition, tie composite coating can also closely under the influence of high temperature because foring stronger hydrogen bond action
It closes, therefore heat resistance increases.The present invention also added graphene and aqueous polyurethane and be used in conjunction with modified raw lacquer, nothing
Pollution securely and reliably, is easily modified, and not only facilitates the compatibility for improving graphene and aqueous polyurethane in coating system, also
It can further improve the mechanical performance and alkali resistance of composite coating of the present invention.Preparation process of the invention is easy to operate, scientific conjunction
Reason, the composite coating of preparation are had excellent performance, and properties, which are significantly better than that, refines raw lacquer for original.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of modified raw lacquer composite coating, raw material include that lignin, aqueous polyurethane, purification raw lacquer, metal ethyl alcohol are molten
Liquid, graphene；Wherein, the volume ratio of the aqueous polyurethane, raw lacquer and metal ethanol solution is 3:4:1；The purification raw lacquer
Weight ratio with lignin is 15:1；
Wherein, the metal ethanol solution includes FeCl3Ethanol solution and SnCl2Ethanol solution；The FeCl3Ethyl alcohol is molten
Liquid is the FeCl of 20wt%3Ethanol solution；The SnCl2Ethanol solution is the SnCl of 10wt%2Ethanol solution；The FeCl3Second
Alcoholic solution and SnCl2The volume ratio of ethanol solution is 5:1；The weight ratio of the graphene and aqueous polyurethane is 1:100.
The preparation method of the modified raw lacquer composite coating, includes the following steps:
Metal ethanol solution is added into purification raw lacquer, after being stirred to react 40min, lignin, pressurized, heated, 70 is added
1h is reacted at DEG C, and aqueous polyurethane is then added and is stirred to react 3h, obtains modified raw lacquer composite coating.
Embodiment 2
A kind of modified raw lacquer composite coating, raw material include that lignin, aqueous polyurethane, purification raw lacquer, metal ethyl alcohol are molten
Liquid, graphene；Wherein, the volume ratio of the aqueous polyurethane, raw lacquer and metal ethanol solution is 2:7:1；The purification raw lacquer
Weight ratio with lignin is 10:1；
Wherein, the metal ethanol solution includes FeCl3Ethanol solution and SnCl2Ethanol solution；The FeCl3Ethyl alcohol is molten
Liquid is the FeCl of 30wt%3Ethanol solution；The SnCl2Ethanol solution is the SnCl of 5wt%2Ethanol solution；The FeCl3Second
Alcoholic solution and SnCl2The volume ratio of ethanol solution is 10:3；The weight ratio of the graphene and aqueous polyurethane is 0.3:100.
The preparation method of the modified raw lacquer composite coating, includes the following steps:
Metal ethanol solution is added into purification raw lacquer, after being stirred to react 60min, lignin, pressurized, heated, 50 is added
2h is reacted at DEG C, and aqueous polyurethane is then added and is stirred to react 1h, obtains modified raw lacquer composite coating.
Embodiment 3
A kind of modified raw lacquer composite coating, raw material include that lignin, aqueous polyurethane, purification raw lacquer, metal ethyl alcohol are molten
Liquid, graphene；Wherein, the volume ratio of the aqueous polyurethane, raw lacquer and metal ethanol solution is 3:7:1；The purification raw lacquer
Weight ratio with lignin is 12:1；
Wherein, the metal ethanol solution includes FeCl3Ethanol solution and SnCl2Ethanol solution；The FeCl3Ethyl alcohol is molten
Liquid is the FeCl of 25wt%3Ethanol solution；The SnCl2Ethanol solution is the SnCl of 8wt%2Ethanol solution；The FeCl3Second
Alcoholic solution and SnCl2The volume ratio of ethanol solution is 9:2；The weight ratio of the graphene and aqueous polyurethane is 0.7:100.
The preparation method of the modified raw lacquer composite coating, includes the following steps:
Metal ethanol solution is added into purification raw lacquer, after being stirred to react 50min, lignin, pressurized, heated, 60 is added
1.5h is reacted at DEG C, and aqueous polyurethane is then added and is stirred to react 2h, obtains modified raw lacquer composite coating.
Test example 1
GB/T1732-1993, GB/T1720-1989, GB/T1728-1989, GB/T6739-1996 according to national standards,
Time, adhesive force, impact resistance and hardness are dried to the modified raw lacquer composite coating that 1-3 of the embodiment of the present invention is obtained respectively
Measurement, and same performance measurement is carried out using original purification raw lacquer as reference examples, measurement result is as shown in table 1.
The mechanical performance of 1 coating of table
| Project | Drying time (h) | Adhesive force (grade) | Impact resistance (kg/cm) | Hardness |
| Embodiment 1 | 52 | 4 | 29 | 2H |
| Embodiment 2 | 51 | 3 | 32 | 2H |
| Embodiment 3 | 49 | 3 | 30 | 2H |
| Reference examples | 96 | 7 | 5 | B |
As can be seen from Table 1, compared with original refines raw lacquer, drying time shorten to modified raw lacquer composite coating of the present invention
49-52h, adhesive force grade rise to 3-4 grades by 7 grades, and impact resistance grade rises to 29-32kg/cm, hardness by 5kg/cm
2H grades are risen to by B grades, properties are significantly improved.
Test example 2
1) alkaline resistance properties test is carried out to composite coating made from the embodiment of the present invention 3 and former purification raw lacquer coating respectively,
Concrete operations are as follows: by the rod iron for being coated with coating in the 500mL flask for filling 30% NaOH solution, being heated, remembered with electric furnace
Record is boiled to the time that film falls off from rod iron from solution；2) respectively to composite coating made from the embodiment of the present invention 3 and original
It refines raw lacquer coating and carries out heat resistance test, concrete operations are as follows: film is placed in Muffle furnace calcination under certain temperature
20h, heating rate are 10 DEG C of min, and the maximum temperature of calcination is recorded in the unconverted situation of appearance of film；Test result such as table
Shown in 2.
The alkaline-resisting and heat resistance of 2 coating of table
| It falls off the time | Calcination maximum temperature | |
| Embodiment 3 | 47h | 330℃ |
| Original purification raw lacquer | 12h | 130℃ |
As can be seen from Table 2, performance of the invention with original refine raw lacquer compared with, modified raw lacquer composite coating of the present invention it is resistance to
It is alkaline to be significantly improved with heat resistance.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of modified raw lacquer composite coating, which is characterized in that its raw material includes lignin, aqueous polyurethane, purification raw lacquer, gold
Belong to ethanol solution, graphene；Wherein, the volume ratio of the aqueous polyurethane, raw lacquer and metal ethanol solution is 2-3:4-7:1；
The weight ratio of the purification raw lacquer and lignin is 10-15:1.
2. modified raw lacquer composite coating according to claim 1, which is characterized in that the metal ethanol solution includes FeCl3Second
Alcoholic solution and SnCl2Ethanol solution.
3. modified raw lacquer composite coating according to claim 2, which is characterized in that the FeCl3Ethanol solution is 20-
The FeCl of 30wt%3Ethanol solution.
4. modified raw lacquer composite coating according to claim 2, which is characterized in that the SnCl2Ethanol solution is 5-10wt%
SnCl2Ethanol solution.
5. modified raw lacquer composite coating according to claim 2, which is characterized in that the FeCl3Ethanol solution and SnCl2Second
The volume ratio of alcoholic solution is 5-10:1-3.
6. modified raw lacquer composite coating according to claim 1, which is characterized in that the weight of the graphene and aqueous polyurethane
Amount is than being 0.3-1:100.
7. a kind of preparation method of any one of -6 modified raw lacquer composite coatings according to claim 1, which is characterized in that including
Following steps:
Metal ethanol solution is added into purification raw lacquer, after being stirred to react 40-60min, lignin, pressurized, heated, in 50- is added
1-2h is reacted at 70 DEG C, and aqueous polyurethane is then added and is stirred to react 1-3h, obtains modified raw lacquer composite coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810514265.1A CN108997935A (en) | 2018-05-25 | 2018-05-25 | A kind of modified raw lacquer composite coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810514265.1A CN108997935A (en) | 2018-05-25 | 2018-05-25 | A kind of modified raw lacquer composite coating and preparation method thereof |
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| CN108997935A true CN108997935A (en) | 2018-12-14 |
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| CN201810514265.1A Withdrawn CN108997935A (en) | 2018-05-25 | 2018-05-25 | A kind of modified raw lacquer composite coating and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109971347A (en) * | 2019-03-06 | 2019-07-05 | 常州市三伊化工有限公司 | A kind of preparation method of high viscosity high intensity raw lacquer |
Citations (6)
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|---|---|---|---|---|
| CN101302397A (en) * | 2008-06-20 | 2008-11-12 | 中华全国供销合作总社西安生漆涂料研究所 | Lignose raw lacquer composite coating |
| CN103468133A (en) * | 2013-09-18 | 2013-12-25 | 中国林业科学研究院林产化学工业研究所 | Preparation method of tannic acid modified raw lacquer composite coating |
| CN104073144A (en) * | 2014-07-11 | 2014-10-01 | 中国林业科学研究院林产化学工业研究所 | Oriental lacquer compounded double-component terpenyl waterborne polyurethane and preparation method thereof |
| CN107955532A (en) * | 2017-12-25 | 2018-04-24 | 中山市得高行知识产权中心（有限合伙） | A kind of lignose raw lacquer composite coating |
| CN107964103A (en) * | 2017-09-01 | 2018-04-27 | 福建师范大学 | A kind of graphene dispersion agent and the preparation method of graphene/raw lacquer composite anticorrosion coating |
| CN107987661A (en) * | 2017-12-29 | 2018-05-04 | 西北农林科技大学 | A kind of biomass graphene modified raw lacquer heavy antisepsis composite coating and preparation method thereof |
-
2018
- 2018-05-25 CN CN201810514265.1A patent/CN108997935A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302397A (en) * | 2008-06-20 | 2008-11-12 | 中华全国供销合作总社西安生漆涂料研究所 | Lignose raw lacquer composite coating |
| CN103468133A (en) * | 2013-09-18 | 2013-12-25 | 中国林业科学研究院林产化学工业研究所 | Preparation method of tannic acid modified raw lacquer composite coating |
| CN104073144A (en) * | 2014-07-11 | 2014-10-01 | 中国林业科学研究院林产化学工业研究所 | Oriental lacquer compounded double-component terpenyl waterborne polyurethane and preparation method thereof |
| CN107964103A (en) * | 2017-09-01 | 2018-04-27 | 福建师范大学 | A kind of graphene dispersion agent and the preparation method of graphene/raw lacquer composite anticorrosion coating |
| CN107955532A (en) * | 2017-12-25 | 2018-04-24 | 中山市得高行知识产权中心（有限合伙） | A kind of lignose raw lacquer composite coating |
| CN107987661A (en) * | 2017-12-29 | 2018-05-04 | 西北农林科技大学 | A kind of biomass graphene modified raw lacquer heavy antisepsis composite coating and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109971347A (en) * | 2019-03-06 | 2019-07-05 | 常州市三伊化工有限公司 | A kind of preparation method of high viscosity high intensity raw lacquer |
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Application publication date: 20181214 |