CN114085597A - High-hardness quick-drying type bio-based alkyd paint and preparation method thereof - Google Patents
High-hardness quick-drying type bio-based alkyd paint and preparation method thereof Download PDFInfo
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- CN114085597A CN114085597A CN202111390557.7A CN202111390557A CN114085597A CN 114085597 A CN114085597 A CN 114085597A CN 202111390557 A CN202111390557 A CN 202111390557A CN 114085597 A CN114085597 A CN 114085597A
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
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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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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Abstract
The invention relates to a high-hardness quick-drying biological alcohol acid coating which is prepared from the following raw materials: water, a water-based dispersant, a water-based wetting agent, a water-based defoaming agent, a bio-based alkyd resin, water-based color paste, an anti-flash rust agent, a drier, a thickener, a preservative and modified silica sol with the pH value of 8-10. The invention effectively solves the problems of low drying speed and low hardness of a paint film of the water-based alkyd resin by using the modified silica sol as an auxiliary film forming substance. The silica sol is nano silica particles, can be quickly dried to form a film, and can also be filled in alkyd resin to increase the compactness and hardness of a paint film, so that the hardness and other physical properties of the paint film can be improved.
Description
Technical Field
The invention relates to the field of coatings, in particular to a high-hardness quick-drying bio-based alkyd coating and a preparation method thereof.
Background
Resins used in traditional acrylic coatings, epoxy coatings or polyurethane coatings are all derived from petrochemical engineering, belong to nonrenewable resources, and are increasingly important to reduce or get rid of dependence on nonrenewable resources with the development of times and the adjustment of energy structures.
The water-based alkyd resin uses renewable vegetable oil as a raw material and water as a dispersion medium, so that the water-based alkyd resin meets the requirements of low-carbon times and green environmental protection, and compared with the traditional industrial coating, the anticorrosive coating prepared from the water-based alkyd resin with high bio-based content has the advantages of being green, environment-friendly, low-carbon and emission-reducing.
However, water-borne alkyd paints have the disadvantages of slow drying speed and poor film hardness, which has prevented their large-scale application. In order to overcome the defect, through a large number of experiments, the invention discloses an alkyd silica sol co-doping method, namely, a certain proportion of silica sol and silane coupling agent are added into the water-based alkyd paint, and as the silica sol can be rapidly crosslinked to form a film and can be filled into alkyd resin, the drying of a paint film can be accelerated, the hardness of the final paint film can be increased, and in addition, the gain effect of increasing the salt spray resistance of the paint film is achieved.
However, in order to achieve the purpose of improving the drying speed and the hardness of a paint film, the silicon sol and the silane coupling agent are added in the formula, so that the cost is increased to a certain extent; therefore, the development of a low-cost coating which can realize high-hardness quick drying is imperative.
Technical problem to be solved
In order to solve the problems in the prior art, the invention provides a high-hardness quick-drying bio-based alkyd paint and a preparation method thereof.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
a high-hardness quick-drying bio-based alkyd paint is composed of the following raw materials in parts by weight: 0.4 to 5.2 portions of water, 0.3 to 0.6 portion of water dispersant, 0.3 to 0.6 portion of water wetting agent, 0.1 to 0.3 portion of water defoamer, 35 to 55 portions of bio-based alkyd resin, 20 to 30 portions of water color paste, 0.5 to 1.5 portions of flash rust inhibitor, 1.1 to 1.8 portions of drier, 0.4 to 0.8 portion of thickener, 0.4 to 0.7 portion of preservative and 10 to 35 portions of modified silica sol with the pH value of 8 to 10.
A preparation method of a high-hardness quick-drying bio-based alkyd paint comprises the following steps:
step S1: sequentially stirring the biological alcohol acid resin, the water-based dispersing agent, the water-based wetting agent and the water-based defoaming agent for 1-2min at the rotating speed of the reaction kettle which is less than 500 rpm;
step S2: adding the aqueous color paste, and stirring for 2-4 min;
step S3: then adding a drier, an anti-flash rust agent and a preservative in sequence, and stirring for 2 min;
step S4: finally, adding the modified silica sol with the pH value of 8-10, the thickening agent and water, and continuously stirring for 5-10min to obtain a finished product.
(III) advantageous effects
The invention has the beneficial effects that: by using the modified silica sol as an auxiliary film forming substance, the problems of low drying speed and low hardness of a paint film of the water-based alkyd resin are effectively solved. The silica sol is nano silica particles, can be quickly dried to form a film, and can also be filled in alkyd resin to increase the compactness and hardness of a paint film, so that the hardness and other physical properties of the paint film can be improved.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention by way of specific embodiments thereof.
A high-hardness quick-drying type bio-based alkyd paint is composed of the following raw materials in parts by weight: 0.4 to 5.2 portions of water, 0.3 to 0.6 portion of water dispersant, 0.3 to 0.6 portion of water wetting agent, 0.1 to 0.3 portion of water defoamer, 35 to 55 portions of bio-based alkyd resin, 20 to 30 portions of water color paste, 0.5 to 1.5 portions of flash rust inhibitor, 1.1 to 1.8 portions of drier, 0.4 to 0.8 portion of thickener, 0.4 to 0.7 portion of preservative and 10 to 35 portions of modified silica sol with the pH value of 8 to 10.
Wherein, the water adopts common tap water, the water-based dispersing agent, the water-based wetting agent, the water-based defoaming agent, the anti-flash rust agent and the preservative are purchased from the Dow chemical industry, the bio-based alkyd resin is purchased from Shanghai Yujie New Material Co., Ltd, the modified silica sol with the pH value of 8-10 is purchased from the Orimun chemical industry, and the water-based color paste is purchased from the Shanghai Kaye chemical industry.
A preparation method of a high-hardness quick-drying bio-based alkyd paint comprises the following steps:
step S1: sequentially stirring the biological alcohol acid resin, the water-based dispersing agent, the water-based wetting agent and the water-based defoaming agent for 1-2min at the rotating speed of the reaction kettle which is less than 500 rpm;
step S2: adding the aqueous color paste, and stirring for 2-4 min;
step S3: then adding a drier, an anti-flash rust agent and a preservative in sequence, and stirring for 2 min;
step S4: finally adding the modified silica sol with the pH value of 8-10, the thickening agent and water, and continuously stirring for 5-10min to obtain a finished product.
The pH value of the modified silica sol adopted by the embodiment is matched with that of the biological alcohol acid resin, so that the resin is not degraded, and the modified silica sol has good compatibility; the adopted modified silica sol can be independently and quickly dried to form a film, and can also be filled in alkyd resin to increase the hardness and the compactness of a paint film, so that various physical properties of the paint film are effectively improved.
In the embodiment, the modified silica sol with the pH value of 8-10 is used as an auxiliary film forming substance, so that the problems of low drying speed and low hardness of a paint film of the waterborne alkyd resin are effectively solved. The silica sol is nano silica particles, can be quickly dried to form a film, and can also be filled in alkyd resin to increase the compactness and hardness of a paint film, so that the hardness and other physical properties of the paint film can be improved.
The high-hardness quick-drying bio-based water-based alkyd paint prepared by the embodiment has high bio-based components, reduces the dependence on petrochemical resources, and accords with the industrial trend of low carbon and environmental protection, the prepared paint can be surface-dried for 10 minutes and completely dried for 24 hours, the hardness of HB can be achieved within 5 days, the hardness of H can be achieved within 14 days, the paint film hardness of 2H can be finally achieved, and the salt spray resistance time can be 72 hours.
The first embodiment is as follows:
s1, adjusting the rotating speed to 300rpm, adding 55 parts of bio-based alkyd resin, 0.6 part of water-based dispersant, 0.6 part of water-based wetting agent and 0.3 part of water-based defoaming agent, and stirring for 1 min;
s2, adding 30 parts of color paste, and stirring for 2 min;
s3, adding 1.8 parts of a drier, 0.5 part of an anti-flash rust agent and 0.4 part of a preservative;
s4, adding 10 parts of modified silica sol with the pH value of 8-10, 0.4 part of thickening agent and 0.4 part of water, and continuously stirring for 5-10min to obtain a finished product.
Example two:
s1, adjusting the rotating speed to 300rpm, adding 45 parts of biological alcohol acid resin, 0.4 part of water-based dispersant, 0.4 part of water-based wetting agent and 0.2 part of water-based defoaming agent, and stirring for 1 min;
s2, adding 24 parts of color paste, and stirring for 2 min;
s3, adding 1.4 parts of a drier, 1.0 part of an anti-flash rust agent and 0.5 part of a preservative;
s4, adding 24 parts of modified silica sol with the pH value of 8-10, 0.6 part of thickening agent and 2.5 parts of water, and continuously stirring for 5-10min to obtain a finished product.
Example three:
s1, adjusting the rotating speed to 300rpm, adding 35 parts of bio-based alkyd resin, 0.3 part of water-based dispersant, 0.3 part of water-based wetting agent and 0.2 part of water-based defoamer, and stirring for 1 min;
s2, adding 20 parts of color paste, and stirring for 2 min;
s3, adding 1.1 parts of drier, 1.5 parts of anti-flash rust agent and 0.7 part of preservative;
s4, adding 35 parts of modified silica sol with the pH value of 8-10, 0.8 part of thickening agent and 5.2 parts of water, and continuously stirring for 5-10min to obtain a finished product.
Comparative example one:
s1, adjusting the rotating speed to 300rpm, adding 60 parts of bio-based alkyd resin, 0.6 part of water-based dispersant, 0.6 part of water-based wetting agent and 0.3 part of water-based defoaming agent, and stirring for 1 min;
s2, adding 35 parts of color paste, and stirring for 2 min;
s3, adding 1.8 parts of a drier, 0.5 part of an anti-flash rust agent and 0.4 part of a preservative;
and S4, adding 0.4 part of thickening agent and 0.4 part of water, and continuously stirring for 5-10min to obtain a finished product.
Comparative example two:
s1, adjusting the rotating speed to 300rpm, adding 35 parts of bio-based alkyd resin, 0.3 part of water-based dispersant, 0.3 part of water-based wetting agent and 0.2 part of water-based defoaming agent, and stirring for 1 min;
s2, adding 20 parts of color paste, and stirring for 2 min;
s3, adding 1.1 parts of drier, 1.5 parts of anti-flash rust agent and 0.7 part of preservative;
and S4, adding 0.8 part of thickening agent and 40.2 parts of water, and continuously stirring for 5-10min to obtain a finished product.
Comparative example three:
s1, adjusting the rotating speed to 300rpm, adding 45 parts of biological alcohol acid resin, 0.4 part of water-based dispersant, 0.4 part of water-based wetting agent and 0.2 part of water-based defoaming agent, and stirring for 1 min;
s2, adding 24 parts of color paste, and stirring for 2 min;
s3, adding 1.4 parts of a drier, 1.0 part of an anti-flash rust agent and 0.5 part of a preservative;
s4, adding 0.6 part of thickening agent and 26.5 parts of water, and continuously stirring for 5-10min to obtain a finished product.
The embodiment of the invention and the comparative example are compared in performance, wherein the drying time of the paint film refers to the national standard GB/T1728-2020 method for measuring the drying time of the paint film and the putty film; the adhesion test is carried out according to the national standard GB/T9286-1998 grid test for paint films of colored paint and varnish; the paint film hardness test is carried out according to GB/T6739-2006 paint film hardness determination by a color paint and varnish pencil method; the salt spray resistance of the paint film is tested according to national standard GBT1771-2007 determination of neutral salt spray resistance of colored paint and varnish, and the obtained data is shown in the following table 1.
TABLE 1 comparison of the Performance of the high hardness quick-drying biobased alkyd coating of the invention versus the comparative examples
From the above table, it can be found that the addition of the modified silica sol can effectively shorten the drying time of a paint film and increase the final hardness of the paint film, and meanwhile, the neutral salt spray resistance time of the paint film can also be increased, and the paint film added with the silica sol still can have about fifty percent of bio-based content.
Comparative examples one to three, coatings without the addition of modified silica sol required 4h tack-free, 3 days solid dry, 21 days hardness of only HB, salt spray resistance time of only 24h, and physical properties not comparable to those of the coating of the present invention.
The above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (2)
1. The high-hardness quick-drying type biological alcohol acid coating is characterized by comprising the following raw materials in parts by weight: 0.4 to 5.2 portions of water, 0.3 to 0.6 portion of water dispersant, 0.3 to 0.6 portion of water wetting agent, 0.1 to 0.3 portion of water defoamer, 35 to 55 portions of bio-based alkyd resin, 20 to 30 portions of water color paste, 0.5 to 1.5 portions of flash rust inhibitor, 1.1 to 1.8 portions of drier, 0.4 to 0.8 portion of thickener, 0.4 to 0.7 portion of preservative and 10 to 35 portions of modified silica sol with the pH value of 8 to 10.
2. A method of preparing a high hardness, quick drying biobased alkyd coating, as claimed in claim 1, comprising the steps of:
step S1: sequentially stirring the biological alcohol acid resin, the water-based dispersing agent, the water-based wetting agent and the water-based defoaming agent for 1-2min at the rotating speed of the reaction kettle which is less than 500 rpm;
step S2: adding the aqueous color paste, and stirring for 2-4 min;
step S3: then adding a drier, an anti-flash rust agent and a preservative in sequence, and stirring for 2 min;
step S4: finally, adding the modified silica sol with the pH value of 8-10, the thickening agent and water, and continuously stirring for 5-10min to obtain a finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111390557.7A CN114085597A (en) | 2021-11-23 | 2021-11-23 | High-hardness quick-drying type bio-based alkyd paint and preparation method thereof |
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| CN202111390557.7A CN114085597A (en) | 2021-11-23 | 2021-11-23 | High-hardness quick-drying type bio-based alkyd paint and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116042067A (en) * | 2023-01-09 | 2023-05-02 | 广东立邦长润发科技材料有限公司 | Preparation and application of bio-based thick-coatable aqueous two-component transparent primer |
| CN116875092A (en) * | 2023-07-13 | 2023-10-13 | 佛山市东鹏陶瓷有限公司 | Preparation method of inorganic ceramic baking-free coating and decorative material thereof |
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| CN103459519A (en) * | 2011-03-25 | 2013-12-18 | 阿克佐诺贝尔化学国际公司 | Alkyd-based coating composition |
| CN110862522A (en) * | 2019-11-27 | 2020-03-06 | 广东珠江化工涂料有限公司 | Full-bio-based waterborne alkyd resin and preparation method thereof |
| CN112300703A (en) * | 2020-11-16 | 2021-02-02 | 北京红狮科技发展有限公司 | Water-based bio-based climbing frame coating and preparation method thereof |
| CN112442312A (en) * | 2020-11-16 | 2021-03-05 | 北京红狮科技发展有限公司 | Water-based biological multifunctional coating and preparation method thereof |
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2021
- 2021-11-23 CN CN202111390557.7A patent/CN114085597A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103459519A (en) * | 2011-03-25 | 2013-12-18 | 阿克佐诺贝尔化学国际公司 | Alkyd-based coating composition |
| CN110862522A (en) * | 2019-11-27 | 2020-03-06 | 广东珠江化工涂料有限公司 | Full-bio-based waterborne alkyd resin and preparation method thereof |
| CN112300703A (en) * | 2020-11-16 | 2021-02-02 | 北京红狮科技发展有限公司 | Water-based bio-based climbing frame coating and preparation method thereof |
| CN112442312A (en) * | 2020-11-16 | 2021-03-05 | 北京红狮科技发展有限公司 | Water-based biological multifunctional coating and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116042067A (en) * | 2023-01-09 | 2023-05-02 | 广东立邦长润发科技材料有限公司 | Preparation and application of bio-based thick-coatable aqueous two-component transparent primer |
| CN116875092A (en) * | 2023-07-13 | 2023-10-13 | 佛山市东鹏陶瓷有限公司 | Preparation method of inorganic ceramic baking-free coating and decorative material thereof |
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