CN105295695A - Solvent-free modified polyurethane paint and preparation method thereof - Google Patents
Solvent-free modified polyurethane paint and preparation method thereof Download PDFInfo
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- CN105295695A CN105295695A CN201510797280.8A CN201510797280A CN105295695A CN 105295695 A CN105295695 A CN 105295695A CN 201510797280 A CN201510797280 A CN 201510797280A CN 105295695 A CN105295695 A CN 105295695A
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Abstract
The invention relates to the technical field of paint, and provides a solvent-free modified polyurethane paint and a preparation method thereof. The solvent-free modified polyurethane paint comprises the following components by a weight ratio: 45-55 parts of polyhydroxy resin, 5-10 parts of active diluents, 0.5-1 part of a dispersant, 0.2-0.4 parts of an antifoaming agent, 1-1.6 parts of an anti-settling agent, 4-6 parts of a coloring pigment, 3-8 parts of a filling material, 6-8 parts of an rust-resisting pigment, 2-4 parts of conductive polyaniline, 10-12 parts of conductive mica, 3-6 parts of hollow glass beads and 5-10 parts of ceramic beads. The solvent-free modified polyurethane paint has good performances of sagging resistance, drying property, clunging, salt fog resistance, acid-base resistance, heat insulation, electrical conductivity and non corrosibility; construction operation is easy, and the solvent-free modified polyurethane paint is suitable for an anticorrosion coating used for inner walls of a petroleum storage tank.
Description
Technical field
The present invention relates to technical field of coatings, particularly relate to a kind of Solvent-free Modification polyurethane coating and preparation method thereof.
Background technology
Along with the fast development that China's oil chemical industry is built, petrochemical equipment corrosion-resistant field proposes requirements at the higher level to oil product storage tank inner wall anti-corrosive and technique thereof, and " environmental protection, safety, performance and cost " etc. become the trend of the industry development gradually.
A lot of for the similar coating of rot-resistant in oil product storage tank on the market at present, but most Problems existing is that the solids content of coating is low, VOC (volatileorganiccompounds refers to volatile organic compounds) high, brings many potential safety hazards to inner wall of oil tank construction; Oil product has the characteristic of sensitive simultaneously, easily occurs inflammable and explosive accident, so the thermal insulation of coating and electrostatic conductiveness are also particularly important in hot environment.
Summary of the invention
In sum, the object of the present invention is to provide a kind of Solvent-free Modification polyurethane coating and preparation method thereof, be intended to solve the problems such as the solid content that existing tank inner wall coating exists is low, VOC material is high, heat insulation and electrostatic conductive performance is poor.
The present invention is achieved in that modified solventless polyurethane coating, and it comprises the component of following parts by weight:
Compared with prior art, Solvent-free Modification polyurethane coating provided by the invention, sag resistance, drying property, sticking power, salt fog resistance, resistance to acids and bases, thermal insulation, conductivity, anticorrosion etc. in functional, test its physicochemical property, its surface resistivity is 10
8-10
11Ω cm
2, meanwhile, its thermal conductivity is not more than 0.085W/ (mk).Be easy to constructing operation, be applicable to the anticorrosion of inner wall of petroleum storage tank.
The present invention also provides a kind of preparation method of Solvent-free Modification polyurethane coating, and its preparation method concrete steps are as follows:
Described polyhydroxy resin, described reactive thinner, described dispersion agent, described defoamer and described anti-settling agent are carried out mixing process, be mixed with the first mixture;
Described filler, described tinting pigment, described rust-stabilising pigment and described electrically conductive polyaniline are added in described first mixture and carry out mixing process, be mixed with the second mixture;
Described conductive mica powder is added mixing process in described second mixture, be mixed with the 3rd mixture;
Described cenosphere, ceramic fine bead are added in described 3rd mixture and carries out mixing process, be mixed with modified solventless polyurethane coating.
Compared with prior art, the preparation method of Solvent-free Modification polyurethane coating provided by the invention, completes interpolation and the mixing of raw material successively according to its step, and whole process is easy to realize, simple to operate.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, following specific embodiment, is further elaborated to the present invention.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Below in conjunction with specific embodiment, realization of the present invention is described in detail.
On the one hand, a kind of modified solventless polyurethane coating is embodiments provided.In one embodiment, modified solventless polyurethane coating comprises the component of following parts by weight:
Preferably, polyhydroxy resin is the solventfree resin of hydroxy radical content 6.5%-7.5%, viscosity 2800-3200mpas, is the filmogen with advantages such as good sticking power, chemicals-resistant and quick-dryings.
Preferably, solidifying agent separates with modification solvent polyurethane coating to be deposited, and during use, modification is used in combination according to the mass ratio of 2:1 to 3:1 without both solution polyurethane coating and solidifying agent, and solidifying agent is isocyanate polymer.
Preferably, reactive thinner is modification hexanediamine glycidyl ether low-molecular(weight)polymer, for reducing the viscosity of coating system.
Preferably, dispersion agent is supermolecule dispersant, for reducing coating system viscosity, improves the stability in storage of coating system simultaneously; Defoamer is broken bubble polysiloxane solution, for eliminating the bubble that coating system produces in production and construction.
Preferably, anti-settling agent is modified polyamide wax powder, for improving the anti-sag performance of coating system, increases the one-pass film-forming thickness of coating, the efficiency of lifting construction.
Preferably, tinting pigment is titanium dioxide, and the crystalline structure of titanium dioxide is rutile-type.
Preferably, rust-stabilising pigment is aluminium triphosphate or zinc phosphate, for improving the salt spray resistance of coating system.
Preferably, filler is talcum powder, in coating system, play skeleton function, reduces the hardness of paint film that manufacturing cost improves coating simultaneously.
Preferably, electrically conductive polyaniline has good conductivity and excellent environmental stability, adopt the electrically conductive polyaniline of nano-level conducting type coating system electric conductivity can be improved more than 10 quantity, improve the solvability of coating system simultaneously and promote its erosion resistance.
Preferably, conductive mica powder is for base material with the mica powder of light weight, sheet, its surface is wrapped by which floor stable chemical performance, corrosion resistance nature is strong, specific conductivity is high conducting material, particle diameter is less than 15 microns, the specific surface area of conductive mica powder is large, and in coating system, be subject to less shearing force, can be dispersed, thus improve the electroconductibility of coating system.
Preferably, hollow glass micropearl is the soda lime borosilicate hollow glass spheroid of particle diameter at 15-20 micron, provides good heat-proof quality for coating system.
Preferably, ceramic fine bead is primarily of silicon-dioxide and aluminium sesquioxide composition, belong to aluminum silicate ceramic series, there is the performances such as high rigidity, high-wearing feature, acid and alkali-resistance, plasticity-, cohesiveness, dispersiveness, insulativity, resistivity against fire, adsorptivity, weathering resistance, chemical stability, for providing good heat-proof quality for coating system.
On the other hand, present invention also offers a kind of preparation method of embodiment of the present invention modified solventless polyurethane coating above.This modified solventless polyurethane preparation method for coating comprises the steps:
Step S01: polyhydroxy resin, reactive thinner, dispersion agent, defoamer and anti-settling agent are carried out mixing process, be mixed with the first mixture;
Step S02: filler, tinting pigment, rust-stabilising pigment and electrically conductive polyaniline are added in the first mixture and carry out mixing process, be mixed with the second mixture;
Step S03: conductive mica powder is added mixing process in the second mixture, be mixed with the 3rd mixture;
Step S04: cenosphere, ceramic fine bead are added in the 3rd mixture and carries out mixing process, be mixed with modified solventless polyurethane coating.
Wherein, in above-mentioned steps S01, uniform mixing equipment does not limit, and can be dispersion cylinder, disperse under normal temperature, and jitter time is 10-15 minute;
In above-mentioned steps S02, uniform mixing equipment does not limit, and can be dispersion cylinder, and mix as temperature is 65-70 DEG C, jitter time is 15-20 minute;
In above-mentioned steps S03, uniform mixing equipment does not limit, and can be dispersion cylinder, disperse under normal temperature, and jitter time is 10-15 minute;
In above-mentioned steps S04, uniform mixing equipment does not limit, and can be dispersion cylinder, disperse under normal temperature, and jitter time is 10-15 minute.
Embodiment 1
According to above-mentioned each substance weight component proportion, and according to the modified solventless polyurethane coating of above-mentioned preparation method's matter, specific as follows: polyhydroxy resin 45 parts, reactive thinner 5 parts, dispersion agent 0.5 part, defoamer 0.2 part, anti-settling agent 1.3 parts, filler 8 parts, tinting pigment 4 parts, rust-stabilising pigment 6 parts, electrically conductive polyaniline 2 parts, Conductive mica part 12 parts, cenosphere 6 parts and ceramic fine bead 10 parts.
Wherein, anti-settling agent is polyamide wax powder, and filler is the combination of talcum powder and mica powder, each 4 parts, and rust-stabilising pigment is zinc phosphate.
In step S01, uniform mixing equipment is dispersion cylinder, disperses under normal temperature, and jitter time is 10 minutes;
In step S02, uniform mixing equipment is dispersion cylinder, and mix as temperature is 65 DEG C, jitter time is 15 minutes;
In step S03, uniform mixing equipment is dispersion cylinder, disperses under normal temperature, and jitter time is 10 minutes;
In step S04, uniform mixing equipment is dispersion cylinder, disperses under normal temperature, and jitter time is 10 minutes.
Prepared Solvent-free Modification polyurethane coating mixes with the mass ratio of 3:1 with isocyanate polymer by the present embodiment, has mixed according to the method described above to test its each physicochemical property afterwards, and test result is as follows: anti-sag performance is greater than 180 microns; Sticking power (pulling open method) 12Mpa; Shock-resistance is 50cm; Salt fog resistance (500 microns, Sa2.5) is 3000 hours; Wet-heat resisting 20 days is unchanged; Surface resistivity: 10
10Ω cm
2; Thermal conductivity is 0.03W/ (mk).
Embodiment 2
According to above-mentioned each substance weight component proportion, and according to the modified solventless polyurethane coating of above-mentioned preparation method's matter, specific as follows: polyhydroxy resin 48 parts, reactive thinner 7 parts, dispersion agent 0.6 part, defoamer 0.3 part, anti-settling agent 1.1 parts, filler 3 parts, tinting pigment 5 parts, rust-stabilising pigment 8 parts, electrically conductive polyaniline 3 parts, Conductive mica part 10 parts, cenosphere 5 parts and ceramic fine bead 9 parts.
Wherein, anti-settling agent is polyamide wax powder, and filler is talcum powder, and rust-stabilising pigment is aluminium triphosphate.
In step S01, uniform mixing equipment is dispersion cylinder, disperses under normal temperature, and jitter time is 13 minutes;
In step S02, uniform mixing equipment is dispersion cylinder, and mix as temperature is 65 DEG C, jitter time is 18 minutes;
In step S03, uniform mixing equipment is dispersion cylinder, disperses under normal temperature, and jitter time is 13 minutes;
In step S04, uniform mixing equipment is dispersion cylinder, disperses under normal temperature, and jitter time is 13 minutes.
Prepared Solvent-free Modification polyurethane coating mixes with the mass ratio of 3:1 with isocyanate polymer by the present embodiment, and after having mixed according to the method described above, test its each physicochemical property, test result is as follows: anti-sag performance is greater than 250 microns; Sticking power (pulling open method) 15Mpa; Shock-resistance is 50cm; Salt fog resistance (500 microns, Sa2.5) is 3600 hours; Wet-heat resisting 30 days is unchanged; Surface resistivity: 10
8Ω cm
2; Thermal conductivity is 0.025W/ (mk).
Embodiment 3
According to above-mentioned each substance weight component proportion, and according to the modified solventless polyurethane coating of above-mentioned preparation method's matter, specific as follows: polyhydroxy resin 55 parts, reactive thinner 10 parts, dispersion agent 1 part, defoamer 0.4 part, anti-settling agent 1.6 parts, tinting pigment 4 parts, rust-stabilising pigment 7 parts, electrically conductive polyaniline 3 parts, Conductive mica part 11 parts, cenosphere 5 parts and ceramic fine bead 9 parts.
Wherein, anti-settling agent is polyamide wax powder, and rust-stabilising pigment is zinc phosphate.
In step S01, uniform mixing equipment is dispersion cylinder, disperses under normal temperature, and jitter time is 15 minutes;
In step S02, uniform mixing equipment is dispersion cylinder, and mix as temperature is 68 DEG C, jitter time is 20 minutes;
In step S03, uniform mixing equipment is dispersion cylinder, disperses under normal temperature, and jitter time is 15 minutes;
In step S04, uniform mixing equipment is dispersion cylinder, disperses under normal temperature, and jitter time is 15 minutes.
Prepared Solvent-free Modification polyurethane coating mixes with the mass ratio of 2.5:1 with isocyanate polymer by the present embodiment, and after having mixed according to the method described above, test its each physicochemical property, test result is as follows: anti-sag performance is greater than 250 microns; Sticking power (pulling open method) 14Mpa; Shock-resistance is 50cm; Salt fog resistance (500 microns, Sa2.5) is 4600 hours; Wet-heat resisting 30 days is unchanged; Surface resistivity: 10
8Ω cm
2; Thermal conductivity is 0.023W/ (mk).
Embodiment 4
According to above-mentioned each substance weight component proportion, and according to the modified solventless polyurethane coating of above-mentioned preparation method's matter, specific as follows: polyhydroxy resin 50 parts, reactive thinner 8 parts, dispersion agent 0.8 part, defoamer 0.2 part, anti-settling agent 1 part, filler 4 parts, tinting pigment 6 parts, rust-stabilising pigment 6 parts, electrically conductive polyaniline 4 parts, Conductive mica part 10 parts, cenosphere 3 parts, ceramic fine bead 5 parts.
Wherein, anti-settling agent is polyamide wax powder, and filler is mica powder, and rust-stabilising pigment is aluminium triphosphate.
In step S01, uniform mixing equipment is dispersion cylinder, disperses under normal temperature, and jitter time is 15 minutes;
In step S02, uniform mixing equipment is dispersion cylinder, and mix as temperature is 70 DEG C, jitter time is 20 minutes;
In step S03, uniform mixing equipment is dispersion cylinder, disperses under normal temperature, and jitter time is 15 minutes;
In step S04, uniform mixing equipment is dispersion cylinder, disperses under normal temperature, and jitter time is 15 minutes.
Prepared Solvent-free Modification polyurethane coating mixes with the mass ratio of 2:1 with isocyanate polymer by the present embodiment, and after having mixed according to the method described above, test its each physicochemical property, test result is as follows: anti-sag performance is greater than 250 microns; Sticking power (pulling open method) 18Mpa; Shock-resistance is 50cm; Salt fog resistance (500 microns, Sa2.5) is 4500 hours; Wet-heat resisting 30 days is unchanged; Surface resistivity: 10
9Ω cm
2; Thermal conductivity is 0.043W/ (mk).
To sum up, the Solvent-free Modification polyurethane coating that the embodiment of the present invention provides, its sag resistance, drying property, sticking power, salt fog resistance, resistance to acids and bases, thermal insulation, conductivity, the performance such as anticorrosion are good, and are easy to constructing operation.Due to not containing any solvent, its solids content is high and VOC is low, as can be seen from above-mentioned test result, also have heat insulation good, the advantage such as conduct electricity very well, and therefore, is suitable for the corrosion protection coating of inner wall of petroleum storage tank.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. modified solventless polyurethane coating, is characterized in that, it comprises the component of following parts by weight:
2. modified solventless polyurethane coating according to claim 1, is characterized in that, described polyhydroxy resin is the solventfree resin of hydroxy radical content 6.5%-7.5%, viscosity 2800-3200mpas.
3. modified solventless polyurethane coating according to claim 1, it is characterized in that, also comprise solidifying agent, separate with described modification solvent polyurethane coating and deposit, during use, described modification mixes with the mass ratio of described solidifying agent according to 2:1 to 3:1 without solution polyurethane coating, and described solidifying agent is isocyanate polymer.
4., according to the arbitrary described modified solventless polyurethane coating of claim 1-3, it is characterized in that, described reactive thinner is modification hexanediamine Racemic glycidol ether oligomer.
5., according to the arbitrary described modified solventless polyurethane coating of claim 1-3, it is characterized in that, described dispersion agent is supermolecule dispersant; And/or described defoamer is broken bubble polysiloxane solution.
6., according to the arbitrary described modified solventless polyurethane coating of claim 1-3, it is characterized in that, described anti-settling agent is modified polyamide wax powder; And/or described filler is talcum powder.
7., according to the arbitrary described modified solventless polyurethane coating of claim 1-3, it is characterized in that, described tinting pigment is titanium dioxide, and/or described electrically conductive polyaniline is nano-level conducting type.
8., according to the arbitrary described modified solventless polyurethane coating of claim 1-3, it is characterized in that, described rust-stabilising pigment is aluminium triphosphate and/or zinc phosphate.
9., according to the arbitrary described modified solventless polyurethane coating of claim 1-3, described hollow glass micropearl is the soda lime borosilicate hollow glass spheroid of particle diameter at 15-20 micron; And/or described ceramic fine bead is aluminum silicate ceramic series, is made up of silicon-dioxide and aluminium sesquioxide.
10. a preparation method for the modified solventless polyurethane coating as described in as arbitrary in claim 1 to 9, it is characterized in that, described preparation method's concrete steps are as follows:
Described polyhydroxy resin, described reactive thinner, described dispersion agent, described defoamer and described anti-settling agent are carried out mixing process, be mixed with the first mixture;
Described filler, described tinting pigment, described rust-stabilising pigment and described electrically conductive polyaniline are added in described first mixture and carry out mixing process, be mixed with the second mixture;
Described conductive mica powder is added mixing process in described second mixture, be mixed with the 3rd mixture;
Described cenosphere, ceramic fine bead are added in described 3rd mixture and carries out mixing process, be mixed with modified solventless polyurethane coating.
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|---|---|---|---|
| CN201510797280.8A CN105295695A (en) | 2015-11-18 | 2015-11-18 | Solvent-free modified polyurethane paint and preparation method thereof |
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| CN201510797280.8A CN105295695A (en) | 2015-11-18 | 2015-11-18 | Solvent-free modified polyurethane paint and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116063874A (en) * | 2016-09-07 | 2023-05-05 | Usg内部有限责任公司 | Acoustically transparent coating |
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| CN102702926A (en) * | 2012-06-21 | 2012-10-03 | 福建立恒涂料有限公司 | Static conductive solvent resistant paint for inner wall of oil reservoir |
| CN102766392A (en) * | 2012-07-26 | 2012-11-07 | 中华制漆（深圳）有限公司 | Solvent-free, epoxy-modified, heat-insulated and static conductive coating, and preparation method and application thereof |
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2015
- 2015-11-18 CN CN201510797280.8A patent/CN105295695A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702926A (en) * | 2012-06-21 | 2012-10-03 | 福建立恒涂料有限公司 | Static conductive solvent resistant paint for inner wall of oil reservoir |
| CN102766392A (en) * | 2012-07-26 | 2012-11-07 | 中华制漆（深圳）有限公司 | Solvent-free, epoxy-modified, heat-insulated and static conductive coating, and preparation method and application thereof |
Non-Patent Citations (1)
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|---|
| 顾继友: "《胶黏剂与涂料》", 30 September 2012, 中国林业出版社 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116063874A (en) * | 2016-09-07 | 2023-05-05 | Usg内部有限责任公司 | Acoustically transparent coating |
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Application publication date: 20160203 |