CN111410892A - Environment-friendly transparent woodware primer and preparation method thereof - Google Patents

Environment-friendly transparent woodware primer and preparation method thereof Download PDF

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CN111410892A
CN111410892A CN202010257779.0A CN202010257779A CN111410892A CN 111410892 A CN111410892 A CN 111410892A CN 202010257779 A CN202010257779 A CN 202010257779A CN 111410892 A CN111410892 A CN 111410892A
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primer
environment
woodware
parts
transparent
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CN111410892B (en
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张清
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Curtin Coatings Shanghai Co ltd
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Curtin Coatings Shanghai Co ltd
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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
    • 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
    • C08G59/50—Amines
    • C08G59/5006—Amines aliphatic
    • 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
    • C08G59/68—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 catalysts used
    • C08G59/686—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 catalysts used containing nitrogen
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/10—Transparent films; Clear coatings; Transparent materials

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention provides an environment-friendly transparent woodware primer which comprises the following components in parts by weight: 40-60 parts of 828 epoxy resin, 5-10 parts of active diluent, 10-15 parts of plant phenol, 0.1-0.3 part of defoaming agent, 20-30 parts of transparent powder, 2-5 parts of ground powder and 5410-30 parts of accelerator K. The production method of the environment-friendly transparent woodware primer comprises the following steps: sequentially adding 828 epoxy resin, active diluent, plant phenol, defoamer, transparent powder and grinding powder, stirring uniformly, then adding curing agent, and stirring until the fineness reaches 30-40 micrometers. The solid content of the invention is more than 95 percent, the VOC content is less than 5 percent, the VOC content is about 13 milligrams per liter, and the odor is extremely low. The film has high transparency after being formed, is polished after being dried, has the hardness of 2H and moderate viscosity, can be sprayed and brushed, and has good leveling property and no sagging. Solves the problems of swelling and yellowing of tannin. The comprehensive cost reaches PU wood lacquer, and the environmental protection effect exceeds that of water-based paint.

Description

Environment-friendly transparent woodware primer and preparation method thereof
Technical Field
The invention belongs to the technical field of wood primer, and particularly relates to an environment-friendly transparent wood primer and a preparation method thereof.
Background
At present, the national atmosphere is more and more environment-friendly, and the traditional PU, PE, AC and other wood coatings with high VOC content are under the double pressure of policy market, so that the market quitting is not slow enough. But at present, the paint film has the problems of insufficient fullness, insufficient hardness, insufficient transparency, long drying time, high drying and coating cost, poor tannin resistance, and high expansion, which cause large market demand, but the promotion difficulty is high, and the problems are also the reasons for unsmooth promotion of the current waterborne wood lacquer.
Disclosure of Invention
Aiming at various problems of the existing water-based wood paint, the invention provides an environment-friendly transparent wood primer and a preparation method thereof.
In order to achieve the above purpose, the technical solution for solving the above technical problems is as follows: the environment-friendly transparent woodware primer comprises the following components in parts by weight:
Figure BDA0002438071880000011
Figure BDA0002438071880000021
the invention is further provided with 1-10 parts by weight of epoxy modified curing agent 2771.
The invention is further configured that the reactive diluent is one or two of AGE reactive diluent and epoxy reactive diluent, BGE.
The invention further provides that the defoaming agent is one or two of polysiloxane and organic silicon.
The invention is further configured such that the abrasive powder is zinc stearate.
The invention is further configured that the transparent powder is silicon dioxide.
The invention is further configured that the plant phenol is cardanol.
The invention also provides a production method of the environment-friendly transparent wood primer, which comprises the following steps: (1) preparing a curing agent: sequentially adding an accelerant K54 and an epoxy modified curing agent 2771, and uniformly stirring at 400-600 revolutions per minute; (2) preparing a main agent: sequentially adding 828 epoxy resin, active diluent, plant phenol, defoamer, transparent powder and milled powder, uniformly stirring, and dispersing at a high speed of 1500 revolutions per minute for 15-30 minutes until the fineness reaches 30-40 micrometers.
When in use, the main agent and the curing agent are mixed for use.
The invention has the beneficial effects that:
(1) the solid content of the environment-friendly transparent wood primer reaches more than 95%, the content of VOC in a formula is lower than 5%, the current national standard of VOC of the water-based wood primer is 300 mg/L, and the VOC of the environment-friendly transparent wood primer is about 13 mg/L, has extremely low smell and is basically tasteless.
(2) The main agent and the curing agent are mixed, the transparency is quite high after film forming, the film is polished for 5 hours under the condition of drying time of 25 ℃, the hardness reaches 2H, the viscosity is moderate, the film can be sprayed and brushed, the leveling property is excellent, and the film does not sag.
(3) Because the woodware primer has ultrahigh solid content which is about twice that of PU and about three times that of the water-based woodware paint, the dosage is extremely saved, under the condition that a plurality of woods are coated in a closed manner, no matter PU or the water-based woodware paint is coated with the primer for three times, the woodware primer can be closed, and the woodware primer can be closed only by two times when the woodware primer is thin. Generally, one primer spraying and polishing process can be omitted compared with PU paint in construction, two primer spraying and polishing processes can be omitted compared with water-based paint, due to ultrahigh solid content, sealing property and excellent chemical resistance, the problems of rib expansion, paint film collapse and tannic acid yellowing are solved, the comprehensive cost can reach that of PU wood paint, and the environmental protection is better than the final effect of the water-based paint.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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
The environment-friendly transparent woodware primer comprises a main agent and a curing agent, wherein the main agent comprises the following components in parts by weight: 828 epoxy resin 40, AGE active diluent 5, cardanol 13, polysiloxane 0.2, silicon dioxide 25 and zinc stearate 4. The addition amount of the curing agent is 20, the curing agent comprises an epoxy modified curing agent 2771 and an accelerator K54, and the specific gravity of the epoxy modified curing agent 2771 and the accelerator K54 is 1: 4.
The production method of the environment-friendly transparent woodware primer comprises the following steps: (1) preparing a curing agent: sequentially adding an accelerator K54 and an epoxy modified curing agent 2771, and uniformly stirring at 400 revolutions per minute; (2) preparing a main agent: and sequentially adding 828 epoxy resin, AGE active diluent, cardanol, polysiloxane, silicon dioxide and zinc stearate, uniformly stirring, and dispersing for 30 minutes at a high speed of 1000 revolutions per minute until the fineness reaches 36 micrometers.
Example 2
The environment-friendly transparent woodware primer comprises a main agent and a curing agent, wherein the main agent comprises the following components in parts by weight: 828 epoxy resin 60, AGE active diluent 10, cardanol 15, polysiloxane 0.3, silicon dioxide 20 and zinc stearate 2. The addition amount of the curing agent is 30, the curing agent comprises an epoxy modified curing agent 2771 and an accelerator K54, and the specific gravity of the epoxy modified curing agent 2771 and the accelerator K54 is 1: 1.
The production method of the environment-friendly transparent woodware primer comprises the following steps: (1) preparing a curing agent: sequentially adding an accelerator K54 and an epoxy modified curing agent 2771, and uniformly stirring at 600 revolutions per minute; (2) preparing a main agent: and sequentially adding 828 epoxy resin, AGE active diluent, cardanol, polysiloxane, silicon dioxide and zinc stearate, uniformly stirring, and dispersing at a high speed of 1500 revolutions per minute for 20 minutes until the fineness reaches 30 micrometers.
Example 3
The environment-friendly transparent woodware primer comprises a main agent and a curing agent, wherein the main agent comprises the following components in parts by weight: 828 epoxy resin 50, AGE active diluent 7, cardanol 10, polysiloxane 0.1, silicon dioxide 30 and zinc stearate 5. The addition amount of the curing agent is 25, the curing agent comprises an epoxy modified curing agent 2771 and an accelerator K54, and the specific gravity of the epoxy modified curing agent 2771 and the accelerator K54 is 1: 9.
The production method of the environment-friendly transparent woodware primer comprises the following steps: (1) preparing a curing agent: sequentially adding an accelerator K54 and an epoxy modified curing agent 2771, and uniformly stirring at 400 revolutions per minute; (2) preparing a main agent: and sequentially adding 828 epoxy resin, AGE active diluent, cardanol, polysiloxane, silicon dioxide and zinc stearate, uniformly stirring, and dispersing for 15 minutes at a high speed of 800 revolutions per minute until the fineness reaches 40 micrometers.
Example 4
The environment-friendly transparent woodware primer comprises the following components in parts by weight: 828 epoxy resin 55, epoxy active diluent BGE 8, cardanol 11, organic silicon 0.2, silicon dioxide 30, zinc stearate 4 and accelerator K5410.
The production method of the environment-friendly transparent woodware primer comprises the following steps: sequentially adding 828 epoxy resin, epoxy active diluent BGE, cardanol, organic silicon, silicon dioxide and zinc stearate, stirring uniformly, adding accelerator K54, and continuously stirring uniformly.
Test one: the environment-friendly transparent woodware primer of the four embodiments is subjected to verification test according to the detection standard: GB/T23999-. The test results are shown in table 1.
TABLE 1 test results of four examples
Figure BDA0002438071880000051
The above table shows that the environment-friendly transparent wood primer has high solid content, low VOC content and extremely low odor. The solid content is ultrahigh, so that the sealing property is good, and the problems of expansion of tendon and yellowing of tannic acid can be prevented.
And (2) test II: the leveling test is referred to JB/T3998-.
Test results show that the epoxy modified curing agent 2771 can be used at low temperature with good leveling property, the leveling index gradually increases with the increase of the addition fraction of the epoxy modified curing agent 2771, and when the ratio of the epoxy modified curing agent 2771 to the accelerator K54 is 9:1, the leveling index is 10.
And (3) test III: the composition removal accelerator K54 in the above four examples was comparative example 1, comparative example 2, comparative example 3, and comparative example 4, respectively, with reference to the test standards: GB/T23999-.
TABLE 2 drying Performance comparison of four examples and four comparative examples
Figure BDA0002438071880000061
The test shows that the accelerator K54 can dry the paint very quickly according to the proportion of the epoxy modified curing agent 2771, and can dry at room temperature in one day, and if the accelerator K54 is not added, the paint can be dried within about 50 hours, the drying speed is high, the whole process can be accelerated, and the operation efficiency is improved by combining the test results shown in tables 1 and 2.
And (4) testing: viscosity, impact strength and tensile strength comparative tests.
Comparative example 5 was set: the composition of example 1 without cardanol; comparative example 6 was set: the composition of example 2 was not added with cardanol. The test results are shown in table 3.
TABLE 3 comparison of viscosity, impact strength and tensile strength for the various examples
Figure BDA0002438071880000062
Figure BDA0002438071880000071
As can be seen from Table 3, the use of the plant phenol can greatly reduce the viscosity of the coating, further reduce the use of the solvent diluent, and is beneficial to reducing VOC emission and increasing the solid content and toughness of the coating. In addition to the above examples, the impact strength and tensile strength of the coating reached the highest values of 19.17kj/m when the plant phenol was added at 15% of the 828 epoxy resin2And 56.8 MPa.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (8)

1. The environment-friendly transparent woodware primer is characterized by comprising the following components in parts by weight:
Figure FDA0002438071870000011
2. the primer for environment-friendly transparent woodware as claimed in claim 1, further comprising 1-10 parts by weight of epoxy modified curing agent 2771.
3. The primer for environment-friendly transparent woodware as claimed in claim 1, wherein the reactive diluent is one or two of AGE reactive diluent and epoxy reactive diluent BGE.
4. The environment-friendly transparent woodenware primer according to claim 1, wherein the defoaming agent is one or two of polysiloxane and organic silicon.
5. The primer according to claim 1, wherein the abrasive powder is zinc stearate.
6. The primer for environment-friendly transparent woodware as claimed in claim 1, wherein the transparent powder is silicon dioxide.
7. The environment-friendly transparent wood primer according to claim 1, wherein the plant phenol is cardanol.
8. The production method of the primer curing agent for environment-friendly transparent woodware as claimed in claim 2, characterized by comprising the following steps:
(1) preparing a curing agent: sequentially adding an accelerant K54 and an epoxy modified curing agent 2771, and uniformly stirring at 400-600 revolutions per minute;
(2) preparing a main agent: sequentially adding 828 epoxy resin, active diluent, plant phenol, defoamer, transparent powder and milled powder, uniformly stirring, dispersing for 15-30 minutes at the speed of 800-1500 revolutions per minute, and finishing the process when the fineness reaches 30-40 micrometers.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1887992A (en) * 2006-07-19 2007-01-03 江苏中矿大正表面工程技术有限公司 Nanometer modified epoxy sealing paint and its prepn
CN101787229A (en) * 2010-03-11 2010-07-28 北京雷特新技术实业公司 Spraying type ultraviolet cured woodware varnish
CN102533060A (en) * 2011-12-28 2012-07-04 江苏大中制漆有限公司 Solvent-free type fiber reinforced epoxy paint and preparation method thereof
CN103102769A (en) * 2013-01-22 2013-05-15 重庆市品胜涂料有限公司 High-clarity transparent primer and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1887992A (en) * 2006-07-19 2007-01-03 江苏中矿大正表面工程技术有限公司 Nanometer modified epoxy sealing paint and its prepn
CN101787229A (en) * 2010-03-11 2010-07-28 北京雷特新技术实业公司 Spraying type ultraviolet cured woodware varnish
CN102533060A (en) * 2011-12-28 2012-07-04 江苏大中制漆有限公司 Solvent-free type fiber reinforced epoxy paint and preparation method thereof
CN103102769A (en) * 2013-01-22 2013-05-15 重庆市品胜涂料有限公司 High-clarity transparent primer and preparation method thereof

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