CN114316760A - Shell powder coating with high bio-based content and preparation method thereof - Google Patents
Shell powder coating with high bio-based content and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a shell powder coating with high bio-based content and a preparation method thereof, wherein the shell powder coating comprises the following components in parts by mass: 20-27 parts of water, 0.3-0.8 part of water-based dispersant, 0.3-0.5 part of water-based wetting agent, 0.2-0.6 part of water-based defoamer, 0.2-0.4 part of cellulose, 4-20 parts of rutile titanium dioxide, 14-40 parts of shell powder, 21-40 parts of bio-based alkyd emulsion, 0.6-1.8 parts of drier, 0.8-2.0 parts of film-forming assistant, 0.2-0.6 part of preservative, 0.2-0.6 part of bactericide and 0.2-0.4 part of thickener. The adopted shell powder is derived from seafood shells, belongs to renewable resources, and can be perfectly compounded with the bio-based waterborne alkyd emulsion.
Description
Technical Field
The invention relates to a shell powder coating with high bio-based content and a preparation method thereof.
Background
The resin used by the traditional acrylic acid interior wall coating is derived from petrochemical engineering, belongs to non-renewable resources, and is more and more important to reduce or get rid of the dependence on the non-renewable resources along with the serious consumption of fossil energy and the adjustment of an energy structure. 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; in addition, besides resin and pigment, a large amount of fillers are often added in the building coating to play a filling role, most of the fillers are mineral substances, such as calcium carbonate, kaolin, mica powder, talcum powder and the like, and mining of the mineral substances is often accompanied with land desertification, water pollution and air pollution, so that the building coating belongs to the high-hazard industry. The shell powder is a powder material derived from shells of animals such as oysters, mussels, clams, snails and the like, the main component of the shell powder is calcium carbonate, the shell powder is different from natural calcium carbonate, the shell powder derived from seafood shells is of a porous structure and has a high specific surface area, the shell powder is applied to the aspects of fire prevention, flame retardance, air humidity adjustment, sound absorption, noise reduction, static prevention, bacteria resistance and bacteriostasis, particularly, the adsorption performance of the shell powder is almost the same as that of diatomite, but the diatomite is formed by ancient remains of organisms and belongs to non-renewable resources, the shell powder is prepared from seafood shells and belongs to renewable resources, particularly, the seafood is used in decorative coatings, the shell powder can not only play the roles of air humidity adjustment, formaldehyde adsorption and the like, but also is a low-carbon, environment-friendly and resource-saving behavior. The invention successfully prepares the interior wall decorative coating with high bio-based content by taking the alkyd emulsion from the plant base as a raw material, taking the shell powder from the animal base as a filler, combining with pigments and various auxiliaries.
Disclosure of Invention
The invention provides a shell powder coating with high bio-based content and a preparation method thereof, and the bio-based alkyd emulsion in the coating has good coating performance on the shell powder, so that a paint film formed by the coating has high bio-based content, and in addition, the coating also has the advantages of low VOC content, excellent scrubbing resistance and the like.
The invention is realized by the following technical scheme:
the shell powder coating with high bio-based content comprises the following components in parts by mass: 20-27 parts of water, 0.3-0.8 part of water-based dispersant, 0.3-0.5 part of water-based wetting agent, 0.2-0.6 part of water-based defoamer, 0.2-0.4 part of cellulose, 4-20 parts of rutile titanium dioxide, 14-40 parts of shell powder, 21-40 parts of bio-based alkyd emulsion, 0.6-1.8 parts of drier, 0.8-2.0 parts of film-forming assistant, 0.2-0.6 part of preservative, 0.2-0.6 part of bactericide and 0.2-0.4 part of thickener.
Wherein the water is common tap water, the dispersing agent, the wetting agent, the defoaming agent, the thickening agent and the preservative are purchased from Dow chemical, the bio-based alkyd emulsion is purchased from Shanghai Yujie New Material Co., Ltd, the shell powder is purchased from Cisco mineral product processing factory in Lingshou county, and the rutile titanium dioxide is purchased from Bai Long group Gmby.
A method for preparing shell powder coating with high bio-based content comprises the following steps:
sequentially adding water, cellulose, a water-based dispersing agent, a water-based wetting agent and a water-based defoaming agent at the rotation speed of 300-500rpm, and stirring for 1-2 minutes;
then adding rutile titanium dioxide and shell powder, and stirring for 10-15 minutes at 1200-1500 rpm;
and then sequentially adding the bio-based alkyd emulsion, the drier and the film-forming auxiliary agent, and stirring for 2-5 min.
And finally, adding a bactericide, a preservative and a thickening agent, and continuously stirring for 5-10 minutes to obtain the shell powder coating with high bio-based content.
By using the modern bio-based alkyd emulsion with the carbon content as high as 98% as a film forming material and the shell powder prepared from the seafood shell as a main filler, the coating with the bio-based (plant-based and animal-based) content as high as 60-90% is successfully prepared, and the decorative application of the inner wall can be met. The prepared coating has the effects of low VOC content, scrubbing resistance, sterilization and mould prevention. The comparative example shows that neither a single alkyd emulsion nor a single shell powder can be used to prepare a coating with a high biobased content.
Compared with the prior art, the invention has the following beneficial effects:
the adopted water-based alkyd emulsion is derived from vegetable oil, has the modern carbon content of 98 percent, and belongs to renewable green resources. The adopted shell powder is derived from seafood shells, belongs to renewable resources, and can be perfectly compounded with the bio-based waterborne alkyd emulsion.
Detailed description of the preferred embodiments
Example 1
The shell powder coating with high bio-based content comprises the following components in parts by mass: 20 parts of water, 0.3 part of water-based dispersant, 0.3 part of water-based wetting agent, 0.4 part of water-based defoaming agent, 0.4 part of cellulose, 20 parts of rutile titanium dioxide, 14 parts of shell powder, 40 parts of bio-based alkyd emulsion, 1.8 parts of drier, 2.0 parts of film-forming assistant, 0.2 part of preservative, 0.2 part of bactericide and 0.4 part of thickener.
A method for preparing shell powder coating with high bio-based content comprises the following steps:
s1, adjusting the rotating speed to 300rpm, adding 20 parts of water, 0.4 part of cellulose, 0.3 part of water-based dispersing agent, 0.3 part of water-based wetting agent and 0.4 part of water-based defoaming agent, and stirring for 1 min;
s2, adding 20 parts of rutile titanium dioxide and 14 parts of shell powder, and stirring at the rotating speed of 1500rpm for 15 min;
s3, adding 40 parts of bio-based alkyd emulsion, 1.8 parts of drier and 2.0 parts of film-forming auxiliary agent;
s4, adding 0.2 part of bactericide, 0.2 part of preservative and 0.4 part of thickening agent, and continuously stirring for 5min to obtain a finished product.
Example 2
The shell powder coating with high bio-based content comprises the following components in parts by mass: 25 parts of water, 0.7 part of water-based dispersant, 0.5 part of water-based wetting agent, 0.3 part of water-based defoaming agent, 0.2 part of cellulose, 18 parts of rutile titanium dioxide, 32 parts of shell powder, 21 parts of bio-based alkyd emulsion, 0.6 part of drier, 0.8 part of film-forming assistant, 0.3 part of preservative, 0.4 part of bactericide and 0.2 part of thickener.
A method for preparing shell powder coating with high bio-based content comprises the following steps:
s1, adjusting the rotating speed to 300rpm, adding 25 parts of water, 0.2 part of cellulose, 0.7 part of water-based dispersing agent, 0.5 part of water-based wetting agent and 0.3 part of water-based defoaming agent, and stirring for 1 min;
s2, adding 18 parts of rutile titanium dioxide and 32 parts of shell powder, and stirring at the rotating speed of 1500rpm for 15 min;
s3, then adding 21 parts of bio-based alkyd emulsion, 0.6 part of drier and 0.8 part of film-forming assistant;
s4, adding 0.4 part of bactericide, 0.3 part of preservative and 0.2 part of thickening agent, and continuously stirring for 5min to obtain a finished product.
Example 3
The shell powder coating with high bio-based content comprises the following components in parts by mass: 26 parts of water, 0.7 part of water-based dispersant, 0.4 part of water-based wetting agent, 0.5 part of water-based defoaming agent, 0.3 part of cellulose, 15 parts of rutile titanium dioxide, 15 parts of shell powder, 28 parts of bio-based alkyd emulsion, 1.2 parts of drier, 1.8 parts of film-forming assistant, 0.4 part of preservative, 0.5 part of bactericide and 0.2 part of thickener.
A method for preparing shell powder coating with high bio-based content comprises the following steps:
s1, adjusting the rotating speed to 300rpm, adding 26 parts of water, 0.3 part of cellulose, 0.7 part of water-based dispersing agent, 0.4 part of water-based wetting agent and 0.5 part of water-based defoaming agent, and stirring for 1 min;
s2, adding 15 parts of rutile titanium dioxide and 25 parts of shell powder, and stirring at the rotating speed of 1500rpm for 15 min;
s3, adding 28 parts of bio-based alkyd emulsion, 1.2 parts of drier and 1.8 parts of film-forming aid;
s4, adding 0.5 part of bactericide, 0.4 part of preservative and 0.2 part of thickening agent, and continuously stirring for 5min to obtain a finished product.
Example 4
The shell powder coating with high bio-based content comprises the following components in parts by mass: 24 parts of water, 0.5 part of water-based dispersant, 0.3 part of water-based wetting agent, 0.6 part of water-based defoaming agent, 0.3 part of cellulose, 10 parts of rutile titanium dioxide, 34 parts of shell powder, 26 parts of bio-based alkyd emulsion, 1.2 parts of drier, 1.7 parts of film-forming assistant, 0.5 part of preservative, 0.5 part of bactericide and 0.3 part of thickener.
A method for preparing shell powder coating with high bio-based content comprises the following steps:
s1, adjusting the rotating speed to 300rpm, adding 24 parts of water, 0.3 part of cellulose, 0.5 part of water-based dispersing agent, 0.3 part of water-based wetting agent and 0.6 part of water-based defoaming agent, and stirring for 1 min;
s2, adding 10 parts of rutile titanium dioxide and 34 parts of shell powder, and stirring at the rotating speed of 1500rpm for 15 min;
s3, adding 26 parts of bio-based alkyd emulsion, 1.2 parts of drier and 1.7 parts of film-forming aid;
s4, adding 0.6 part of bactericide, 0.5 part of preservative and 0.3 part of thickening agent, and continuously stirring for 5min to obtain a finished product.
Example 5
The shell powder coating with high bio-based content comprises the following components in parts by mass: 27 parts of water, 0.8 part of water-based dispersant, 0.5 part of water-based wetting agent, 0.2 part of water-based defoaming agent, 0.2 part of cellulose, 4 parts of rutile titanium dioxide, 40 parts of shell powder, 24 parts of bio-based alkyd emulsion, 0.9 part of drier, 1.1 part of film-forming assistant, 0.6 part of preservative, 0.5 part of bactericide and 0.2 part of thickener.
A method for preparing shell powder coating with high bio-based content comprises the following steps:
s1, adjusting the rotating speed to 300rpm, adding 27 parts of water, 0.2 part of cellulose, 0.8 part of water-based dispersing agent, 0.5 part of water-based wetting agent and 0.2 part of water-based defoaming agent, and stirring for 1 min;
s2, adding 4 parts of rutile titanium dioxide and 40 parts of shell powder, and stirring at the rotating speed of 1500rpm for 15 min;
s3, adding 24 parts of bio-based alkyd emulsion, 0.9 part of drier and 1.1 part of film-forming aid;
s4, adding 0.5 part of bactericide, 0.6 part of preservative and 0.2 part of thickening agent, and continuously stirring for 5min to obtain a finished product.
Comparative example 1
S1, adjusting the rotating speed to 300rpm, adding 20 parts of water, 0.4 part of cellulose, 0.3 part of water-based dispersing agent, 0.3 part of water-based wetting agent and 0.4 part of water-based defoaming agent, and stirring for 1 min;
s2, adding 20 parts of rutile titanium dioxide and 14 parts of shell powder, and stirring at the rotating speed of 1500rpm for 15 min;
s3, adding 40 parts of common acrylic emulsion and 3.0 parts of film-forming auxiliary agent;
s4, adding 0.2 part of bactericide, 0.2 part of preservative and 0.4 part of thickening agent, and continuously stirring for 5min to obtain a finished product.
Comparative example 2
S1, adjusting the rotating speed to 300rpm, adding 26 parts of water, 0.3 part of cellulose, 0.7 part of water-based dispersing agent, 0.4 part of water-based wetting agent and 0.5 part of water-based defoaming agent, and stirring for 1 min;
s2, adding 40 parts of rutile titanium dioxide, and stirring at the rotating speed of 1500rpm for 15 min;
s3, adding 28 parts of bio-based alkyd emulsion, 1.2 parts of drier and 1.8 parts of film-forming aid;
s4, adding 0.5 part of bactericide, 0.4 part of preservative and 0.2 part of thickening agent, and continuously stirring for 5min to obtain a finished product.
Comparative example 3
S1, adjusting the rotating speed to 300rpm, adding 20 parts of water, 0.4 part of cellulose, 0.3 part of water-based dispersing agent, 0.3 part of water-based wetting agent and 0.4 part of water-based defoaming agent, and stirring for 1 min;
s2, adding 34 parts of rutile titanium dioxide, and stirring at the rotating speed of 1500rpm for 15 min;
s3, adding 40 parts of common acrylic emulsion and 3.8 parts of film-forming auxiliary agent;
s4, adding 0.2 part of bactericide, 0.2 part of preservative and 0.4 part of thickening agent, and continuously stirring for 5min to obtain a finished product.
The examples of the invention are compared with comparative examples, wherein the test of freeze-thaw resistance cycle, low-temperature film forming property, alkali resistance and scrub resistance refers to national standard GB/T9756-; the detection of volatile organic compounds VOC (g/L) and free formaldehyde (mg/kg) is referred to GB/T18582-; the antibacterial and mildewproof test refers to HG/T3950 and 2007 Standard for antibacterial coatings. The bio-based content is the sum of the animal-based content and the plant-based content, the animal-based content is the mass ratio of the shell powder to the dry film, the plant-based content is 98% of the alkyd emulsion to the dry film, and the dry film is obtained by drying the water paint in an oven at 105 ℃ for 3 hours. The resulting data are shown in the table below.
As shown in the table, the bio-based coating of the present invention has a high bio-based content and is excellent in washing resistance.
TABLE 1 comparison of the Performance of the shell powder coatings of the invention having a high biobased content with the comparative examples
Claims (5)
1. A shell powder coating with high bio-based content is characterized in that: the composition comprises the following components in parts by mass: 20-27 parts of water, 0.3-0.8 part of water-based dispersant, 0.3-0.5 part of water-based wetting agent, 0.2-0.6 part of water-based defoamer, 0.2-0.4 part of cellulose, 4-20 parts of rutile titanium dioxide, 14-40 parts of shell powder, 21-40 parts of bio-based alkyd emulsion, 0.6-1.8 parts of drier, 0.8-2.0 parts of film-forming assistant, 0.2-0.6 part of preservative, 0.2-0.6 part of bactericide and 0.2-0.4 part of thickener.
2. The shell powder coating with high bio-based content of claim 1, wherein: the biological alcoholic yoghurt liquid adopts Secoia 1400 of Shanghai Yujie New Material Co.
3. The shell powder coating with high bio-based content of claim 1, wherein: the shell powder is BKF-600 from a processing plant of a Shuichi mineral product in Lingshou county.
4. The shell powder coating with high bio-based content of claim 1, wherein: the rutile titanium dioxide is R996 from Longbai group GmbH.
5. A method for preparing shell powder coating with high bio-based content is characterized in that: the method comprises the following steps:
adding water, cellulose, a water-based dispersing agent, a water-based wetting agent and a water-based defoaming agent into a container at the rotation speed of 300-500rpm, and stirring for 1-2 minutes; then adding rutile titanium dioxide and shell powder, and stirring for 10-15 minutes at the rotating speed of 1200-1500 rpm; then sequentially adding the bio-based alkyd emulsion, the drier and the film-forming auxiliary agent, and stirring for 2-5 min; and finally, adding a bactericide, a preservative and a thickening agent, and continuously stirring for 5-10 minutes to obtain the shell powder coating with high bio-based content.
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