Economical quick-drying alkyd paint and preparation method thereof

Abstract

The invention provides economical quick-drying alkyd paint and a preparation method thereof, and the economical quick-drying alkyd paint comprises the following components by weight: 25-35 parts of water-based alkyd resin; 0.1 to 0.5 part of DMEA (Dulbecco's Modified 0.1 to 0.5 part of a drier; 25 to 35 parts of color paste; 0.05 to 0.2 part of a defoaming agent A; 0.1 to 0.5 part of a wetting agent; 0.3 to 0.8 part of a thickening agent; 0.3 to 0.8 part of a flash rust inhibitor; and the balance of water. The economical quick-drying alkyd paint provided by the invention adopts the water-based alkyd resin and the titanium dioxide as main raw materials, is low in cost, economical and practical, and also has excellent performances such as water resistance, adhesive force and flexibility.

Description

Technical Field

[0001] The invention relates to the technical field of coatings, and in particular to an economical quick-drying alkyd paint and a preparation method thereof. Background Art

[0002] Alkyd coatings, also known as alkyd resin paints or alkyd resin coatings, are mainly composed of alkyd resins and are the largest type of coatings produced in China. They have the advantages of low price, simple construction, and low requirements on the construction environment.

[0003] In the prior art, the main disadvantages of alkyd paint are:

[0004] 1. Disadvantages of curing: if the paint film is too thick during construction, the surface will be dry but the solvent in the paint film below will not evaporate, causing bubbles. At the same time, because the paint film is not completely dry, the surface paint film will wrinkle. In severe cases, the coating will not be completely cured for several months and the hardness will not meet the standard.

[0005] 2. It is not resistant to strong solvents, and the re-application of high-performance coatings will be corroded, causing defects such as peeling and wrinkling.

[0006] 3. The existing alkyd paint has high permeability, and moisture and ions will penetrate the coating and come into contact with the substrate, so the water resistance is poor.

[0007] 4. Existing alkyd paints are prone to saponification reactions with alkaline substances, which affects adhesion and causes the paint film to fall off. Summary of the invention

[0008] The purpose of the present invention is to provide an economical quick-drying alkyd paint and a preparation method thereof, which can at least solve one of the above problems.

[0009] According to one aspect of the present invention, there is provided an economical quick-drying alkyd paint, comprising the following components in parts by weight:

[0010] Water-based alkyd resin, 25-35 parts;

[0011] DMEA, 0.1-0.5 parts;

[0012] Drier, 0.1-0.5 parts;

[0013] Color paste, 25-35 parts;

[0014] Defoamer A, 0.05-0.2 parts;

[0015] Wetting agent, 0.1-0.5 parts;

[0016] Thickener, 0.3-0.8 parts;

[0017] Anti-flash rust agent, 0.3-0.8 parts;

[0018] The balance is water.

[0019] In some embodiments, the waterborne alkyd resin is 30 parts, DMEA is 0.2 parts, the drying agent is 0.3 parts, the color paste is 30 parts, the defoamer A is 0.05 parts, the wetting agent is 0.2 parts, the thickener is 0.5 parts, and the anti-flash rust agent is 0.5 parts.

[0020] In some embodiments, the thickener includes a low shear thickener and a medium to high shear thickener.

[0021] In some embodiments, the colorant is a 70% white colorant.

[0022] In some embodiments, the 70% white color paste includes the following components in parts by weight:

[0023] BCS, 1-3 copies;

[0024] Dispersant, 3-5 parts;

[0025] Defoamer B, 0.1-0.5 parts;

[0026] Titanium dioxide, 70 parts;

[0027] Fumed silica, 0.1-0.7 parts;

[0028] The balance is water.

[0029] In some embodiments, the BCS is 2 parts, the dispersant is 3.5 parts, the defoamer B is 0.2 parts, and the fumed silica is 0.5 parts.

[0030] In some embodiments, the water is deionized water.

[0031] According to another aspect of the present invention, there is also provided a method for preparing an economical quick-drying alkyd paint, characterized in that it comprises at least the following steps:

[0032] S1. Preparation of color paste: water, BCS, dispersant, defoamer B, titanium dioxide, and fumed silica are sequentially added into a stirring device, the speed of the stirring device is adjusted to 1000 r / min, stirring for 30 minutes, and then grinding to a fineness of less than 15 μm to obtain a color paste for standby use;

[0033] S2, paint making: sequentially add water-based alkyd resin, DMEA, water, drying agent, color paste prepared in step S1, defoamer A, wetting agent, thickener, and anti-flash rust agent into a stirring device, stir evenly, and obtain an economical quick-drying alkyd paint.

[0034] In some embodiments, in step S2, water-based alkyd resin, DMEA, and water are first added to a stirring device, the speed of the stirring device is controlled at 1000 r / min, and stirring is carried out for more than 20 minutes. Then, a drying agent, a color paste prepared in step S1, a defoamer A, a wetting agent, a thickener, and an anti-flash rust agent are added in sequence, and the speed of the stirring device is controlled at 500 r / min, and stirring is carried out for 30 minutes.

[0035] Beneficial effects of the present invention:

[0036] The invention provides an economical quick-drying alkyd paint, which uses water-based alkyd resin and titanium dioxide as main raw materials, has low cost and is economical and practical;

[0037] This economical quick-drying alkyd paint contains a drying agent, which can solve the problems of incomplete curing and substandard hardness, and achieve a quick-drying effect;

[0038] This economical quick-drying alkyd paint contains an anti-flash rust agent, which can effectively improve the paint film's resistance to strong solvents and rust, while not affecting the paint film's water resistance and salt spray resistance.

[0039] This economical, quick-drying alkyd paint contains a color paste made from titanium dioxide, which significantly improves water resistance;

[0040] The economical quick-drying alkyd paint contains a mixture of low-shear thickener and medium-high-shear thickener. The high-shear thickener can improve leveling, while the low-shear thickener can improve anti-sagging. It also contains a color paste made of titanium dioxide, which makes the paint film have good adhesion and is not easy to fall off.

[0041] In summary, the alkyd paint has many advantages such as economy, practicality, water resistance, good adhesion and flexibility. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below.

[0043] The economical quick-drying alkyd paint of the present invention comprises the following components in parts by weight:

[0044] Water-based alkyd resin, 25-35 parts;

[0045] DMEA, 0.1-0.5 parts;

[0046] Drier, 0.1-0.5 parts;

[0047] Color paste, 25-35 parts;

[0048] Defoamer A, 0.05-0.2 parts;

[0049] Wetting agent, 0.1-0.5 parts;

[0050] Thickener, 0.3-0.8 parts;

[0051] Anti-flash rust agent, 0.3-0.8 parts;

[0052] The balance is water.

[0053] Preferably, the water-based alkyd resin is 30 parts, DMEA is 0.2 parts, the drying agent is 0.3 parts, the color paste is 30 parts, the defoamer A is 0.05 parts, the wetting agent is 0.2 parts, the thickener is 0.5 parts, and the anti-flash rust agent is 0.5 parts.

[0054] Preferably, the thickener includes a low shear thickener and a medium to high shear thickener.

[0055] Preferably, the color paste is 70% white color paste.

[0056] As preferred, the 70% white color paste comprises the following components by weight:

[0057] BCS, 1-3 copies;

[0058] Dispersant, 3-5 parts;

[0059] Defoamer B, 0.1-0.5 parts;

[0060] Titanium dioxide, 70 parts;

[0061] Fumed silica, 0.1-0.7 parts;

[0062] The balance is water.

[0063] Preferably, BCS is 2 parts, dispersant is 3.5 parts, defoamer B is 0.2 parts, and fumed silica is 0.5 parts.

[0064] Preferably, the water is deionized water;

[0065] The water-based alkyd resin adopts the water-based alkyd resin produced by Zhejiang Tianhe Resin Co., Ltd.;

[0066] DMEA is N,N-dimethylethanolamine, and the manufacturer is Nanjing Qunce Chemical Co., Ltd.;

[0067] The drying agent is OMG123 drying agent produced by OMG Company of the United States;

[0068] Defoamer B uses German BYK-024 defoamer;

[0069] The wetting agent is Tego245 wetting agent;

[0070] The low shear thickener is Hemmings RHEOLATE 299 low shear viscosity nonionic polyurethane associative thickener;

[0071] The medium-high shear thickener is Hemmingsdeqian rheological agent RHEOLATE 350D water-based thickening additive;

[0072] The anti-flash rust agent uses Tech-8873 anti-flash rust agent produced by Shanghai Tiger Polymer Technology Co., Ltd., which is an organic carboxylate anti-flash rust agent that does not contain nitrite. It has a good effect in preventing rust in water-based industrial paint systems, and does not affect the water resistance and salt spray resistance of the paint film.

[0073] The dispersant is German TEGO755W wetting dispersant;

[0074] Defoamer B uses TEGO Foamex 830 defoamer;

[0075] Titanium dioxide uses Longbai / Longmang R-996 titanium dioxide;

[0076] The fumed silica uses Evonik Degussa White Carbon Black A200 nano-grade fumed silica.

[0077] The invention provides an economical quick-drying alkyd paint, which uses water-based alkyd resin and titanium dioxide as main raw materials, has low cost and is economical and practical;

[0078] This economical quick-drying alkyd paint contains a drying agent, which can solve the problems of incomplete curing and substandard hardness, and achieve a quick-drying effect;

[0079] This economical quick-drying alkyd paint contains an anti-flash rust agent, which can effectively improve the paint film's resistance to strong solvents and rust, while not affecting the paint film's water resistance and salt spray resistance.

[0080] This economical, quick-drying alkyd paint contains a color paste made from titanium dioxide, which significantly improves water resistance;

[0081] This economical quick-drying alkyd paint contains a thickener mixed with a low-shear thickener and a medium-high-shear thickener. The high-shear thickener can improve leveling, while the low-shear thickener can improve anti-sagging properties. It also contains a color paste made from titanium dioxide, which makes the paint film have good adhesion and is not easy to fall off.

[0082] The present invention also discloses a method for preparing the economical quick-drying alkyd paint, which at least comprises the following steps:

[0083] S1. Preparation of color paste: water, BCS, dispersant, defoamer B, titanium dioxide, and fumed silica are sequentially added into a stirring device, the speed of the stirring device is adjusted to 1000 r / min, stirring for 30 minutes, and then grinding to a fineness of less than 15 μm to obtain a color paste for standby use;

[0084] S2, paint making: sequentially add water-based alkyd resin, DMEA, water, drying agent, color paste prepared in step S1, defoamer A, wetting agent, thickener, and anti-flash rust agent into a stirring device, stir evenly, and obtain an economical quick-drying alkyd paint.

[0085] In step S2, water-based alkyd resin, DMEA, and water are first added to a stirring device, the speed of the stirring device is controlled at 1000 r / min, and stirring is performed for more than 20 minutes. Then, a drying agent, the color paste prepared in step S1, a defoamer A, a wetting agent, a thickener, and an anti-flash rust agent are added in sequence, and the speed of the stirring device is controlled at 500 r / min. m i n , stir for 30 m i n .

[0086] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples. The experimental methods in the following examples without specifying specific conditions are carried out according to conventional methods and conditions, or selected according to the product specifications.

[0087] Example 1

[0088] This embodiment provides an economical quick-drying alkyd paint. The specific components and proportions of the economical quick-drying alkyd paint are shown in Table 1 below:

[0089] Table 1: Proportion table of economical quick-drying alkyd paint of Example 1

[0090] Components Weight Waterborne alkyd resin 30 DMEA 0.2 Drier 0.3 Color paste 30 Defoamer A 0.05 Wetting Agents 0.2 Low shear thickener 0.2 Medium and high shear thickener 0.3 Anti-flash rust agent 0.5 Deionized water 29.2

[0091] The specific components and proportions of the color paste in the economical quick-drying alkyd paint are shown in Table 2 below:

[0092] Table 2: Proportion table of the color paste of Example 1

[0093] Components Weight BCS 2 Dispersants 3.5 Defoamer B 0.2 Titanium dioxide 70 Fumed Silica 0.5 Deionized water 23.8

[0094] According to the mixing ratio table in Table 1-2 above, the economical quick-drying alkyd paint is prepared by the following preparation method, which specifically comprises the following steps:

[0095] S1. Prepare color paste: put 23.8 parts of water, 2 parts of BCS, 3.5 parts of dispersant, 0.2 parts of defoamer B, 70 parts of titanium dioxide, and 0.5 parts of fumed silica into a stirring device in order, adjust the speed of the stirring device to 1000r / min, stir for 30 minutes, and then grind to a fineness of less than 15μm to obtain a color paste for standby use;

[0096] S2, paint preparation: firstly put 30 parts of water-based alkyd resin, 0.2 parts of DMEA, and 29.2 parts of water into a stirring device, control the speed of the stirring device at 1000 r / min, stir for more than 20 minutes, then add 0.3 parts of a drying agent, 30 parts of the color paste prepared in step S1, 0.05 parts of a defoamer A, 0.2 parts of a wetting agent, 0.2 parts of a low shear thickener, 0.3 parts of a medium-high shear thickener, and 0.5 parts of an anti-flash rust agent in sequence, control the speed of the stirring device at 500 r / min, stir for 30 minutes, and obtain.

[0097] Example 2

[0098] This embodiment provides another economical quick-drying alkyd paint. The specific components and proportions of the economical quick-drying alkyd paint are shown in Table 3 below:

[0099] Table 3: Proportion table of economical quick-drying alkyd paint of Example 2

[0100] Components Weight Waterborne alkyd resin 28 DMEA 0.3 Drier 0.3 Color paste 31 Defoamer A 0.1 Wetting Agents 0.2 Low shear thickener 0.2 Medium and high shear thickener 0.3 Anti-flash rust agent 0.5 Deionized water 39.1

[0101] The specific components and proportions of the color paste in the economical quick-drying alkyd paint are shown in Table 4 below:

[0102] Table 4: Proportion table of the color paste of Example 3

[0103] Components Weight BCS 2 Dispersants 3.5 Defoamer B 0.3 Titanium dioxide 70 Fumed Silica 0.4 Deionized water 23.8

[0104] According to the mixing ratio tables in Table 3 and Table 4 above, the economical quick-drying alkyd paint of this embodiment is prepared by the same preparation method as that of Example 1.

[0105] Example 3

[0106] This embodiment provides another economical quick-drying alkyd paint. The specific components and proportions of the economical quick-drying alkyd paint are shown in Table 5 below:

[0107] Table 5: Proportion table of economical quick-drying alkyd paint of Example 3

[0108] Components Weight Waterborne alkyd resin 32 DMEA 0.3 Drier 0.4 Color paste 32 Defoamer A 0.15 Wetting Agents 0.3 Low shear thickener 0.2 Medium and high shear thickener 0.3 Anti-flash rust agent 0.3 Deionized water 34.05

[0109] The specific components and proportions of the color paste in the economical quick-drying alkyd paint are shown in Table 2 below:

[0110] Table 6: Proportion table of the color paste of Example 3

[0111] Components Weight BCS 2 Dispersants 2.8 Defoamer B 0.4 Titanium dioxide 70 Fumed Silica 0.5 Deionized water 24.3

[0112] According to the mixing ratio tables in Table 5 and Table 6 above, the economical quick-drying alkyd paint of this embodiment is prepared by the same preparation method as that of Example 1.

[0113] Example 4

[0114] The economical quick-drying alkyd paint prepared in the above embodiments 1-3 was coated on the test plastic product according to the above application method, and the performance of the economical quick-drying alkyd paint prepared in the above embodiments 1-3 was tested using the known national standard method. Specifically, the test items included salt resistance, high temperature and humidity resistance, sweat resistance, touch feel, etc. The performance test results of the economical quick-drying alkyd paint in embodiments 1-3 are shown in Table 7 below:

[0115] Table 7: Performance test table of economical quick-drying alkyd paint of Examples 1-3

[0116]

[0117] According to the above data, the economical quick-drying alkyd paint of the present invention not only has the characteristics of low cost and quick drying, but also has excellent properties such as water resistance, impact resistance, adhesion, and flexibility.

[0118] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An economical quick-drying alkyd paint, characterized in that: The composition comprises the following components in parts by weight: Water-based alkyd resin, 25-35 parts; DMEA, 0.1-0.5 parts; Drier, 0.1-0.5 parts; Color paste, 25-35 parts; Defoamer A, 0.05-0.2 parts; Wetting agent, 0.1-0.5 parts; Thickener, 0.3-0.8 parts; Anti-flash rust agent, 0.3-0.8 parts; The balance is water.

2. The economical quick-drying alkyd paint according to claim 1, characterized in that: The water-based alkyd resin is 30 parts, the DMEA is 0.2 parts, the drying agent is 0.3 parts, the color paste is 30 parts, the defoamer A is 0.05 parts, the wetting agent is 0.2 parts, the thickener is 0.5 parts, and the anti-flash rust agent is 0.5 parts.

3. The economical quick-drying alkyd paint according to claim 1, characterized in that: The thickener includes a low shear thickener and a medium to high shear thickener.

4. The economical quick-drying alkyd paint according to claim 1, characterized in that: The color paste is 70% white color paste.

5. The economical quick-drying alkyd paint according to claim 4, characterized in that: The 70% white color paste includes the following components by weight: BCS, 1-3 copies; Dispersant, 3-5 parts; Defoamer B, 0.1-0.5 parts; Titanium dioxide, 70 parts; Fumed silica, 0.1-0.7 parts; The balance is water.

6. The economical quick-drying alkyd paint according to claim 5, characterized in that: The BCS is 2 parts, the dispersant is 3.5 parts, the defoamer B is 0.2 parts, and the fumed silica is 0.5 parts.

7. The economical quick-drying alkyd paint according to claim 1 or 5, characterized in that: The water is deionized water.

8. A method for preparing an economical quick-drying alkyd paint, characterized in that: At least the following steps are included: S1. Preparation of color paste: water, BCS, dispersant, defoamer B, titanium dioxide, and fumed silica are sequentially added into a stirring device, the speed of the stirring device is adjusted to 1000 r / min, stirring for 30 minutes, and then grinding to a fineness of less than 15 μm to obtain a color paste for standby use; S2, paint making: sequentially add water-based alkyd resin, DMEA, water, drying agent, color paste prepared in step S1, defoamer A, wetting agent, thickener, and anti-flash rust agent into a stirring device, stir evenly, and obtain an economical quick-drying alkyd paint.

9. The method for preparing an economical quick-drying alkyd paint according to claim 8, characterized in that: In step S2, water-based alkyd resin, DMEA and water are first added to a stirring device, the speed of the stirring device is controlled at 1000 r / min, and stirring is carried out for more than 20 minutes. Then, a drying agent, a color paste prepared in step S1, a defoamer A, a wetting agent, a thickener and an anti-flash rust agent are added in sequence, and the speed of the stirring device is controlled at 500 r / min, and stirring is carried out for 30 minutes.

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