CN114940845A - Organic black paste with infrared transmission function and preparation method thereof - Google Patents
Organic black paste with infrared transmission function and preparation method thereof Download PDFInfo
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- CN114940845A CN114940845A CN202210420995.1A CN202210420995A CN114940845A CN 114940845 A CN114940845 A CN 114940845A CN 202210420995 A CN202210420995 A CN 202210420995A CN 114940845 A CN114940845 A CN 114940845A
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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
- C09D17/00—Pigment pastes, e.g. for mixing in paints
- C09D17/003—Pigment pastes, e.g. for mixing in paints containing an organic pigment
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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
- C09D17/00—Pigment pastes, e.g. for mixing in paints
- C09D17/001—Pigment pastes, e.g. for mixing in paints in aqueous medium
Abstract
The invention discloses an organic black paste with an infrared transmission function and a preparation method thereof, belonging to the technical field of color paste; the organic black paste with the infrared transmission function comprises the following raw materials in parts by weight: 5-12 parts of wetting dispersant, 0.5-1.5 parts of defoamer, 0.6-2.5 parts of pH regulator, 10-25 parts of pigment yellow, 9-25 parts of pigment red, 5-25 parts of pigment blue, 0.2-0.5 part of preservative and 50-55 parts of water. The organic black slurry with the infrared transmission function has high infrared transmission, strong coloring, excellent weather resistance, no heavy metal, no polycyclic aromatic hydrocarbon, no halogen, no organic solvent and pure hue. The defects of low reflectance and weak coloring capability of the existing inorganic infrared black sun are solved. The coating can be used for reflective heat insulation sand dyeing, reflective heat insulation coating, encaustic tile coating, coil steel coating and the like, does not contain Polycyclic Aromatic Hydrocarbons (PAHs) compared with carbon black, is halogen-free, and can replace the carbon black to be used in the fields of industrial coating, ink and the like which control the PAHs.
Description
Technical Field
The invention relates to the technical field of color paste, in particular to organic black color paste with an infrared transmission function and a preparation method thereof.
Background
The global temperature rise encourages the research and development and production of low-carbon, environment-friendly and energy-saving products all over the world, and infrared reflective coatings such as real stone paint, colorful coating, elastic flat coating and the like with higher solar reflectance in the field of coatings are more and more popular in the market.
The stone-like paint is used as a building coating and has wide application in building exterior walls. The color sand used by the stone-like paint comprises natural color sand and artificial color sand. The natural color sand has limited resources and can not be regenerated. In addition, the natural colored sand has few color varieties and dark colors, the natural colored sand, particularly dark natural sand, has very low solar reflectance, the artificial colored sand has more color varieties and wide color coverage, and the infrared color paste can be used for improving the solar reflectance of the colored sand as required, namely the so-called cold colored sand is produced. In recent years, artificial colored sand with a higher infrared reflection function is produced by sand dyeing equipment in coating plants and is used for preparing reflective heat-insulating real stone paint. Besides the reflective heat-insulating real stone paint, the multicolor paint with higher solar reflectance and the elastic flat coating amount are increased year by year, and the application of the infrared color paste is increased year by year.
It is well known that infrared pigments include both the infrared reflective pigments and the infrared transmissive pigments. The near Infrared reflectance ratio NSR (near Infrared reflectance) of the yellow Infrared reflection pigment is more than 80%, and other colors are all not high. Black color, although not much higher than ordinary carbon black and iron black, is still not high, such as iron chromium black PBr 29 near infrared reflectance (NSR) of about 40%, and total Solar reflectance TSR (total Solar reflectance) of about 20% or more, which is still not high. The green energy and environmental design pioneer prize (LEED) energy standard gives 25% Total Solar Reflectance (TSR) which is difficult to reach in some color systems. The existing reflective heat-insulating coating has three executable standards, wherein the standard of the solar reflectance ratio given to a dark coating by the two standards is that the TSR is more than or equal to 25 percent; another standard gives other colors TSR ≧ 60%.
In the implementation of these standards to prepare color coatings, the use of conventional infrared reflective black paste (iron chromium black PBr 29) always has some colors that are difficult to satisfy both the solar reflectance and near infrared reflectance specified by the standards. Especially the neutral and dark series, The Solar Reflectance (TSR) of the flat and dark grey, and dark coatings is always low; coatings with many black or dark gray spots in multicolor coatings and real stone paints have a very low solar reflectance ratio (TSR). The color paste prepared by the organic perylene black PBl 32 pigment by adopting the infrared transmission principle can greatly reduce the color matching difficulty in the fields of sand dyeing and flat coating and multicolor coating, and the very high near infrared reflectance of the perylene black PBl 32 can improve The Solar Reflectance (TSR) of the coating to more than 40 percent. However, the price of perylene black is prohibitive for the users of the coating field.
Disclosure of Invention
The invention aims to provide an organic black paste with an infrared transmission function and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an organic black paste with an infrared transmission function comprises the following raw materials in parts by weight: 5-12 parts of wetting dispersant, 0.5-1.5 parts of defoaming agent, 0.6-2.5 parts of pH regulator, 10-25 parts of pigment yellow, 9-25 parts of pigment red, 5-25 parts of pigment blue, 0.2-0.5 part of preservative and 50-55 parts of water.
As a further scheme of the invention: the pigment yellow is an isoindoline yellow pigment.
As a further scheme of the invention: the pigment red is a quinacridone red pigment.
As a further scheme of the invention: the pigment blue is phthalocyanine blue pigment.
As a further scheme of the invention: the wetting dispersant is a polyfunctional wetting dispersant.
As a further scheme of the invention: the pH regulator is organic alkali or inorganic alkali.
As a further scheme of the invention: the defoaming agent is alkynol modified mineral oil.
As a further scheme of the invention: the preservative is methylisothiazolinone.
A preparation method of organic black paste with an infrared transmission function comprises the following steps:
weighing water, a wetting dispersant, a defoaming agent of 3/4 and a pH regulator according to the proportion, uniformly stirring in a material cylinder, adding a pigment, uniformly mixing, grinding until the fineness and the color are qualified, adding a preservative, adding the remaining defoaming agent under stirring, and filtering to obtain the organic black paste with the infrared transmission function.
Compared with the prior art, the invention has the beneficial effects that:
1. the prepared organic black slurry with the infrared transmission function is used for artificial sand dyeing, and the near-infrared reflectance ratio of the dyed artificial colored sand with the same brightness can reach (NSR) more than or equal to 80 percent, so that the solar reflectance ratio of the sand is greatly improved and is higher than iron-chromium black PBr 29; in addition to high infrared reflectance, the tinting strength is also higher than that of inorganic infrared black paste (iron chromium black PBr 29), flat coating and multicolor coating are coated on high-reflection substrates such as white substrate or metal aluminum, the L value of the coating brightness is 20-25, and the Total Solar Reflectance (TSR) reaches more than 40%; the L value of the flat coating lightness of the inorganic infrared color paste is hardly lower than 30, and the Total Solar Reflectance (TSR) is hardly up to 30%;
2. compared with organic perylene black paste (PBl 32), the perylene black PBl 32 has excellent infrared transmission and good coloring strength, and the organic black paste with the infrared transmission function and the PBl 32 are used in artificial sand dyeing, flat coating and multi-color spot coating, so that the Total Solar Reflectance (TSR) and near infrared reflectance (NSR) are high, almost the same level can be achieved under the same lightness, and the coloring capability is equivalent; the perylene black PBl 32 is green in hue and not strictly black; the black hue of the invention can be neutral black (Lab color, the values of a and b both approach 0), or blue phase black (the values of a approach 0, and b is a negative value); compared with organic perylene black, the organic black paste with the infrared transmission function has moderate price which is about 20 percent of the PBl 32 of the perylene black, and can be accepted in the field of coating;
3. the prepared organic black color paste with the infrared transmission function is used for color mixing independently or with other infrared reflection color pastes, so that the near-infrared reflectance and the solar reflectance of artificial colored sand and coating films can be greatly improved, the color mixing difficulty is simplified, and the cost is reduced;
4. the prepared organic black paste with the infrared transmission function has the coloring capability slightly lower than that of carbon black paste, does not contain Polycyclic Aromatic Hydrocarbons (PAHs), is halogen-free, and can replace the carbon black paste to be used in the fields of industrial coatings, printing inks and the like which control the PAHs.
Drawings
FIG. 1 is a process flow chart of preparing organic black paste with infrared transmission function.
Detailed Description
The technical means of the present invention will be described in further detail with reference to the embodiments.
Example 1
A blue-phase black organic black paste with an infrared transmission function comprises the following raw materials: 8kg of wetting dispersant, 1.3kg of defoaming agent, 1.2kg of pH regulator, 20kg of pigment yellow, 11kg of pigment red, 6kg of pigment blue, 0.3kg of preservative and 52.2kg of water; wherein the wetting dispersant is PHOSPHOLAN box PE169, the pH regulator is potassium hydroxide (KOH), the antifoaming agent is Defoamer 1110, the pigment yellow is isoindoline PY139, the pigment red is quinacridone PR122, the pigment blue is phthalocyanine blue PB 15: 3, the preservative is methylisothiazolinone.
A preparation method of organic black paste with an infrared transmission function comprises the following steps: weighing 44.2kg of water (reserving 8kg of water for washing and grinding zirconium beads), wetting dispersant, pH regulator and 1.0kg of defoaming agent (reserving 0.3kg of water for adding after grinding) and uniformly mixing (5-10 Min) in a material cylinder at low speed, wherein the linear speed is about 2 m/s; slowly adding pigment blue, pigment red and pigment yellow, uniformly mixing, and dispersing at high speed for 15-20Min (linear speed of 15-25 m/s); sanding for 3-4 times by using a sand mill until the fineness is less than or equal to 5 mu m and the color is consistent with that of the standard sample, and stopping sanding; washing and grinding the zirconium beads for 2-3 times by using reserved 8kg of water; injecting the cleaned water into the ground color paste, uniformly stirring, weighing 0.3kg of preservative, and reserving 0.3kg of defoamer in the ground color paste, dispersing at a low speed (30-40 Min), and removing bubbles in the color paste at a linear speed of about 2 m/s; filtering and packaging to obtain blue-phase black organic black paste with an infrared transmission function; the process flow is shown in figure 1.
Example 2
A neutral black organic black paste with an infrared transmission function comprises the following raw materials: 10kg of wetting dispersant, 1.0kg of defoaming agent, 0.6kg of pH regulator, 23.5kg of pigment yellow, 9.0kg of pigment red, 5.0kg of pigment blue, 0.3kg of preservative and 50.6kg of water; wherein, the wetting dispersant is Dispex Ultra PX 4290, the pH regulator is AMP-95 (or AMP-90), the defoaming agent is Greesol DF110, the pigment yellow is isoindoline PY110, the pigment red is quinacridone PR122, the pigment blue is phthalocyanine blue PB 15: 6, the preservative is methylisothiazolinone.
The preparation method is the same as that of the embodiment 1, and the neutral black organic black paste with the infrared transmission function is obtained.
The organic black paste with the infrared transmission function prepared in the example 1-2 was examined to determine the hue and the solar reflectance, and the results are shown in tables 1 and 2; wherein comparative example 1 is iron chromium black PBr 29, pigment content 60%; comparative example 2 is perylene black PBl 32 with a pigment content of 38%, comparative example 3 is high pigment carbon black PBk 7 with a pigment content of 35%, examples 1-2 with a pigment content of 37%; the specific test method is as follows:
tinting strength and hue test: weighing 20 parts of white paint, uniformly stirring 0.5 part of color paste, coating a 250 mu wet film preparation device on a glass plate, and testing L, a and b values by a color difference instrument (Lab system) after drying; wherein the lower the L value, the blacker the coating film; a b values all tend to approach 0 as neutral black; a is close to 0 and b has a value between-1 and-5; a ranges from-1 to-5, and the green phase black is obtained when the value of b is close to 0; table 1 shows sample color test data;
and (3) solar reflection test: weighing 9 parts of dark color mixing paint, uniformly stirring 1 part of color paste to obtain dark gray paint, coating the dark gray paint on a black and white check card paper by a 250 mu wet film preparation device, testing the coating solar reflectance (TSR) and the near infrared reflectance (NSR) on the white card paper by a 200-plus 2500nm spectrometer after drying, and testing the coating solar reflectance and the near infrared reflectance on the tested white card paper by the data in the table 2.
TABLE 1
| Group of | Lightness value L | a value | b value | Remarks for note |
| Example 1 | 77.50 | -0.19 | -4.29 | Blue phase black |
| Example 2 | 77.89 | 0.09 | -0.18 | Neutral black |
| COMPARATIVE EXAMPLE 1 (iron chromium black PBr 29) | 80.25 | 0.19 | -4.25 | Blue phase black |
| COMPARATIVE EXAMPLE 2 perylene Black PBl 32) | 77.20 | -4.89 | -1.96 | Green phase black |
| COMPARATIVE EXAMPLE 3 (carbon Black PBk 7) | 76.62 | -0.55 | -4.45 | Blue phase black |
TABLE 2
| Group of | Lightness value L | Solar reflectance TSR | Near infrared emission ratio NSR |
| Example 1 | 27.64 | 0.412 | 0.712 |
| Example 2 | 26.96 | 0.404 | 0.704 |
| COMPARATIVE EXAMPLE 1 (iron chromium black PBr 29) | 29.97 | 0.226 | 0.435 |
| COMPARATIVE EXAMPLE 2 perylene Black PBl 32) | 27.91 | 0.415 | 0.726 |
| COMPARATIVE EXAMPLE 3 (carbon Black PBk 7) | 23.84 | 0.042 | 0.037 |
From the brightness data in Table 1, it can be seen that the blackness and tinting strength of examples 1 and 2 are close to those of the perylene black PBl 32 of comparative example 2, the tinting strength is higher than that of the iron chromium black PBr 29 of comparative example 1 and is slightly lower than that of the carbon black PBk 7 of comparative example 3; hue example 1 is a blue phase black, similar to comparative example 1 iron chromium black PBr 29, comparative example 3 carbon black PBk 7, example 2 is a neutral black, both a, b values are close to 0, and comparative example 2 perylene black PBl 32 is a green phase black.
It can be seen from table 2 that the solar reflectance and near infrared reflectance of examples 1 and 2 are close to the PBl 32 level of the perylene black of comparative example 2, higher than the iron chromium black PBr 29 of comparative example 1, and the carbon black PBk 7 of comparative example 3 has very low solar reflectance and near infrared reflectance.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The organic black paste with the infrared transmission function is characterized by comprising the following raw materials in parts by weight: 5-12 parts of wetting dispersant, 0.5-1.5 parts of defoaming agent, 0.6-2.5 parts of pH regulator, 10-25 parts of pigment yellow, 9-25 parts of pigment red, 5-25 parts of pigment blue, 0.2-0.5 part of preservative and 50-55 parts of water.
2. The organic black paste having an infrared transmission function according to claim 1, wherein the pigment yellow is an isoindoline yellow pigment.
3. The organic black paste having an infrared transmitting function according to claim 1, wherein the pigment red is a quinacridone red pigment.
4. The organic black paste having an infrared transmission function according to claim 1, wherein the pigment blue is phthalocyanine blue pigment.
5. The organic black paste having an infrared transmission function according to claim 1, wherein the wetting dispersant is a multifunctional wetting dispersant.
6. The organic black paste having an infrared transmission function according to claim 1, wherein the pH adjusting agent is an organic base or an inorganic base.
7. The organic black paste having an infrared transmitting function according to claim 1, wherein the antifoaming agent is an alkynol-modified mineral oil.
8. The organic black paste having an infrared transmission function according to claim 1, wherein the preservative is methylisothiazolinone.
9. The method for preparing the organic black paste with the infrared transmission function according to any one of claims 1 to 8, wherein the method comprises the following steps: weighing water, a wetting dispersant, a defoaming agent of 3/4 and a pH regulator according to the proportion, uniformly stirring in a material cylinder, adding a pigment, uniformly mixing, grinding until the fineness and the color are qualified, adding a preservative, adding the remaining defoaming agent under stirring, and filtering to obtain the organic black paste with the infrared transmission function.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115926545A (en) * | 2022-12-26 | 2023-04-07 | 苏州赛伍应用技术股份有限公司 | Weather-resistant black coating and preparation method and application thereof |
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| CN113004757A (en) * | 2021-04-06 | 2021-06-22 | 陈素平 | Dyed sand slurry, artificial colored sand and preparation method |
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| US20050039636A1 (en) * | 2001-12-20 | 2005-02-24 | Yasumasa Matsumoto | Heat shielding surface layer |
| US20050072114A1 (en) * | 2003-10-06 | 2005-04-07 | Shiao Ming Liang | Colored roofing granules with increased solar heat reflectance, solar heat-reflective shingles, and process for producing same |
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| CN115926545A (en) * | 2022-12-26 | 2023-04-07 | 苏州赛伍应用技术股份有限公司 | Weather-resistant black coating and preparation method and application thereof |
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