A functional filler low-viscosity suspension composition and its preparation method and application

Abstract

The present invention relates to a functional filler low-viscosity suspension composition and its preparation method and application. The functional filler low-viscosity suspension composition includes a suspended substance and a suspension; the functional filler low-viscosity suspension composition includes a suspended substance and a suspension; the suspended substance includes the following components by mass fraction: 0.2-2% hydroxyethyl cellulose, 0.05-1% modified lithium magnesium silicate, 0.5-10% auxiliary agent, 0.5-25% functional filler, and a solvent; the suspension includes the following components by mass fraction: 0.3-0.8% modified lithium magnesium silicate, 0.5-10% auxiliary agent, and a solvent; the modified lithium magnesium silicate is dioctadecyldimethylammonium bromide modified lithium magnesium silicate. The present invention not only has good suspension and dispersion functions, but also improves the compatibility between components, so that the product has stronger stability, can be stably stored and applied for a long time under various conditions and uses, and overcomes the problems existing in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of suspensions, in particular to a functional filler low-viscosity suspension composition and a preparation method and application thereof. Background Art

[0002] Functional liquid spray products are used in numerous fields, including pesticides, coatings, plant cultivation, printing and dyeing, and medical treatment. However, these products have low viscosities, similar to those of water. The functional fillers used are mostly solid components, or solid fillers are used as carriers to attach the functional active ingredients. As a result, they have a high density and are difficult to carry in low-viscosity water systems. They often sink, forming stratification, precipitation, and agglomeration, which is detrimental to product storage and use.

[0003] Existing technologies utilize microencapsulation technology to encapsulate active ingredients into microcapsules to improve the suspension stability of fillers. However, this microencapsulation technology belongs to the oil-in-water or water-in-oil technical solution and is only suitable for liquid encapsulation. The encapsulation of general solids still faces technical bottlenecks and has not yet been put into practical application. At the same time, the cost of this type of microencapsulation technology is relatively high, making it difficult to promote on a large scale and having low practical value.

[0004] In summary, it is necessary to develop a new technical solution to solve the deficiencies in the existing technology. Summary of the Invention

[0005] Based on this, the present invention provides a low-viscosity suspension composition containing a functional filler, as well as its preparation method and application. This composition utilizes modified lithium magnesium silicate in combination with hydroxyethyl cellulose, a functional filler, and other substances as components. This composition not only exhibits excellent suspension and dispersion properties but also improves the compatibility between components, resulting in a more stable composition product that can be stored and used for a long time under a variety of conditions and applications, overcoming the problems of the prior art.

[0006] One object of the present invention is to provide a functional filler low-viscosity suspension composition, wherein the functional filler low-viscosity suspension composition comprises a suspended substance and a suspension liquid;

[0007] The suspended matter includes the following components by mass fraction:

[0008]

[0009] The suspension includes the following components by mass fraction:

[0010] Modified lithium magnesium silicate 0.3-0.8%

[0011] Additive 2 0.5-10%

[0012] Solvent residue;

[0013] in,

[0014] The modified lithium magnesium silicate is dioctadecyldimethylammonium bromide modified lithium magnesium silicate.

[0015] The present invention adopts modified lithium magnesium silicate and hydroxyethyl cellulose for compounding. Both components have thickening and gelling effects. At the same time, a certain electrostatic effect and intermolecular force can be formed between the two components, which is conducive to the formation of a low-viscosity homogeneous system, making it difficult for a small amount of functional fillers to agglomerate, delaminate, and form precipitation.

[0016] Furthermore, the preparation method of the modified lithium magnesium silicate comprises the following steps:

[0017] The modified lithium magnesium silicate is obtained by dispersing lithium magnesium silicate in water, adjusting the pH, heating and stirring, then adding dioctadecyldimethylammonium bromide, heating and stirring to react, purifying, drying and grinding.

[0018] Furthermore, the pH is 6.5-7.5.

[0019] Furthermore, the heating and stirring temperature is 40-50° C., and the time is 0.5-1 h.

[0020] Furthermore, the temperature of the heating and stirring reaction is 70-90° C., and the time is 2-5 hours.

[0021] Furthermore, the functional filler is selected from one or more of montmorillonite, fumed silica, rutile titanium dioxide, calcined kaolin, talc, calcium carbonate, antibacterial agent, pollen for pollination, formaldehyde absorber, nano-titanium dioxide composite photocatalytic diatomaceous earth, zinc molybdate, silver molybdate, calcium arsenate, aluminum arsenate, and pigment.

[0022] Furthermore, the nano-titanium dioxide composite photocatalytic diatomaceous earth is a composite material with diatomaceous earth as a carrier and nano-titanium dioxide attached, which has the function of inducing photocatalysis and decomposing pollutants such as formaldehyde through sunlight irradiation; the fumed silica is white carbon black; the pollen for pollination is various plant pollens, such as apple pollen, peach pollen, grape pollen, etc.

[0023] Furthermore, the auxiliary agent 1 and the auxiliary agent 2 are independently selected from one or more of a dispersant, a wetting agent, a defoaming agent, a preservative, a mildew preventer, a pH regulator, a film-forming aid, an antifreeze agent, a thickener, a leveling agent, a foaming agent, a foam stabilizer, and a foaming agent.

[0024] Furthermore, the foaming agent is a hollow microsphere structure, and the hollow microspheres are micron-sized white particles with modified acrylic organic polymer as the inner lining and silicate inorganic material as the outer attachment; preferably, the hollow microspheres are Expancel 920DU 40 produced by Akzo Nobel Ltd., UK.

[0025] Furthermore, the mass ratio of the suspended matter to the suspension is (1-6):(4-9).

[0026] Furthermore, the suspended matter and suspension also include silicone acrylic emulsion.

[0027] Furthermore, the solvent is deionized water.

[0028] Another object of the present invention is to provide a method for preparing the above-mentioned functional filler low-viscosity suspension composition, wherein the method for preparing the functional filler low-viscosity suspension composition comprises the following steps:

[0029] Hydroxyethyl cellulose, modified lithium magnesium silicate, auxiliary agent 1, functional filler, and solvent are blended to obtain a suspension; modified lithium magnesium silicate, auxiliary agent 2, and solvent are blended to obtain a suspension, and then the suspension and the suspension are blended, stirred, and dispersed uniformly to obtain a product.

[0030] Another object of the present invention is to provide the use of the low-viscosity suspension composition of functional fillers in antibacterial compositions, formaldehyde-removing compositions, pollen sprays, and varnishes.

[0031] Furthermore, the varnish comprises the following components in mass fraction:

[0032] Suspended matter:

[0033]

[0034] The suspension includes the following components by mass fraction:

[0035]

[0036] The present invention has the following beneficial effects:

[0037] The functional filler low-viscosity suspension composition provided by the present invention contains modified lithium magnesium silicate. The composition first disperses the lithium magnesium silicate in water to form a gel, and then adds dioctadecyl dimethyl ammonium bromide to heat and react. Dioctadecyl dimethyl ammonium bromide has a cationic structure and can replace the exchangeable cations between the lithium magnesium silicate layers. It is inserted into the lithium magnesium silicate layers in an exchange adsorption manner, and the excess dioctadecyl dimethyl ammonium bromide can also be adsorbed on the surface of the lithium magnesium silicate by physical adsorption. A large number of hydrophobic long alkyl chain segments are introduced into the modified lithium magnesium silicate, which improves the lipophilicity of the lithium magnesium silicate and makes it have better affinity with organic components such as hydroxyethyl cellulose. In particular, in varnish products, the compatibility with silicone acrylic emulsion is greatly enhanced, which is beneficial to the improvement of the emulsification and dispersion effect of the system, thereby enabling the filler to be more uniformly and stably distributed in the system. The functional filler low-viscosity suspension composition of the present invention has good technical effects, and the raw materials are cheap and easily available, the preparation process is simple and controllable, and it can be applied to many fields, overcoming the defects existing in the prior art and having good application prospects. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the technical solutions of the present invention, the following examples are given. Unless otherwise stated, the raw materials, reactions and post-processing methods mentioned in the examples are common raw materials on the market and technical methods well known to those skilled in the art.

[0039] The terms "preferred," "preferably," "more preferred," and the like, used herein, refer to embodiments of the invention that may provide certain benefits under certain circumstances. However, other embodiments may also be preferred under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.

[0040] It should be understood that, except in any operating examples, or where otherwise indicated, all numbers expressing, for example, quantities of ingredients used in the specification and claims are to be understood as being modified in all instances by the term "about." Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and appended claims are approximations that may vary depending upon the desired properties to be obtained by the present invention.

[0041] The hydroxyethyl cellulose in the embodiment of the present invention is Natrosol 250HBR produced by Hercules.

[0042] The pH regulator in the embodiment of the present invention is AMP-95 from Angus Company.

[0043] The hollow microspheres in the embodiment of the present invention are Expancel 920DU 40 produced by Akzo Nobel Ltd., UK.

[0044] The defoaming agent in the embodiment of the present invention is NXZ produced by Nopco, Japan.

[0045] The preservative in the embodiment of the present invention is MBS produced by Thor Specialty Chemicals Co., Ltd.

[0046] The dispersant in the embodiment of the present invention is SN-5040 produced by Nopco Corporation of Japan.

[0047] The wetting agent in the embodiment of the present invention is Infiltrate 7100 produced by Wellman Company, UK.

[0048] The antibacterial agent in the embodiment of the present invention is ZOE produced by Lonza, Switzerland.

[0049] The nano-titanium dioxide composite photocatalytic diatomite in the embodiment of the present invention was purchased from Lutuo Company in Linjiang City, Jilin Province.

[0050] The phthalocyanine blue paste in the embodiment of the present invention is Colanyl Blue A2R 131-CN produced by Clariant.

[0051] The pollen used in the examples of the present invention was purchased from Dalian Delihong Pollen Co., Ltd.

[0052] The film-forming aid in the embodiment of the present invention is Texanol from Eastman Company, USA.

[0053] The fumed silica in the embodiment of the present invention is TS-100 produced by Degussa.

[0054] The silicone acrylic emulsion in the embodiment of the present invention is RS-996KD produced by Bader Rich Emulsion Company.

[0055] The lithium magnesium silicate in the embodiment of the present invention is S482 produced by German BYK company.

[0056] The dioctadecyl dimethyl ammonium bromide in the examples of the present invention was purchased from Aldrich Chemical Reagent Company.

[0057] The preparation method of modified lithium magnesium silicate in the embodiment of the present invention comprises the following steps:

[0058] Lithium magnesium silicate was dispersed in deionized water (lithium magnesium silicate: deionized water = 5:95, m / m), the pH was adjusted to 7 with 0.2 mol / L hydrochloric acid, and stirred at 40°C for 0.5 h. Then, dioctadecyl dimethyl ammonium bromide (lithium magnesium silicate: dioctadecyl dimethyl ammonium bromide = 5:2, m / m) was added, and the reaction was stirred at 80°C for 5 h. After cooling, the mixture was filtered and then washed with ethanol. After drying, the mixture was ground and passed through a 160-mesh sieve to obtain the modified lithium magnesium silicate.

[0059] Example 1

[0060] A low-viscosity suspended antibacterial composition containing a functional filler, the low-viscosity suspended antibacterial composition containing a functional filler consisting of a suspended substance and a suspension liquid;

[0061] The mass ratio of the suspended matter to the suspension is 3:7;

[0062] The suspended matter includes the following components by mass fraction:

[0063]

[0064] The suspension includes the following components by mass fraction:

[0065]

[0066] The preparation method of the functional filler low-viscosity suspension antibacterial composition comprises the following steps:

[0067] According to the above mass fractions, hydroxyethyl cellulose, modified lithium magnesium silicate, pH regulator, hollow microspheres, defoamer, preservative, silver molybdate, zinc molybdate, dispersant, wetting agent, antibacterial agent, and deionized water are uniformly blended to obtain a suspended substance; modified lithium magnesium silicate, defoamer, preservative, and deionized water are uniformly blended to obtain a suspension, and then the suspended substance and the suspension are blended in a mass ratio of 3:7, and dispersed at 1000 r / min for 50 min to obtain a low-viscosity suspended antibacterial composition with a functional filler.

[0068] Example 2

[0069] A low-viscosity suspended formaldehyde removal composition containing a functional filler, the low-viscosity suspended formaldehyde removal composition containing a functional filler consisting of a suspended substance and a suspension liquid;

[0070] The mass ratio of the suspended matter to the suspension is 1:9;

[0071] The suspended matter includes the following components by mass fraction:

[0072]

[0073] The suspension includes the following components by mass fraction:

[0074]

[0075] The preparation method of the functional filler low-viscosity suspension formaldehyde removal composition comprises the following steps:

[0076] According to the above mass fractions, hydroxyethyl cellulose, modified lithium magnesium silicate, pH regulator, preservative, dispersant, wetting agent, nano-titanium dioxide composite photocatalytic diatomaceous earth, and deionized water are evenly blended to obtain a suspended substance; modified lithium magnesium silicate, defoaming agent, preservative, and deionized water are evenly blended to obtain a suspension, and then the suspended substance and the suspension are blended at a mass ratio of 1:9, and dispersed at 1000 r / min for 50 minutes to obtain a functional filler low-viscosity suspended formaldehyde removal composition.

[0077] Example 3

[0078] A functional filler low-viscosity suspended pollen pollination composition, the functional filler low-viscosity suspended pollen pollination composition consisting of a suspended substance and a suspension liquid;

[0079] The mass ratio of the suspended matter to the suspension is 3:7;

[0080] The suspended matter includes the following components by mass fraction:

[0081]

[0082] The suspension includes the following components by mass fraction:

[0083]

[0084] The preparation method of the above-mentioned functional filler low-viscosity suspended pollen pollination composition comprises the following steps:

[0085] According to the above mass fractions, hydroxyethyl cellulose, modified lithium magnesium silicate, pH regulator, hollow microspheres, defoamer, preservative, dispersant, wetting agent, phthalocyanine blue slurry, pollen for pollination, and deionized water are uniformly blended to obtain a suspended substance; modified lithium magnesium silicate, defoamer, preservative, and deionized water are uniformly blended to obtain a suspension, and then the suspended substance and the suspension are blended in a mass ratio of 3:7, and dispersed at 1000 r / min for 50 min to obtain a functional filler low-viscosity suspended pollen pollination composition.

[0086] Example 4

[0087] A functional filler low-viscosity suspended matte finish varnish composition, the functional filler low-viscosity suspended matte finish varnish composition consisting of a suspended substance and a suspension liquid;

[0088] The mass ratio of the suspended matter to the suspension is 6:4;

[0089] The suspended matter includes the following components by mass fraction:

[0090]

[0091]

[0092] The suspension includes the following components by mass fraction:

[0093]

[0094] The preparation method of the functional filler low-viscosity suspended matte finish varnish composition comprises the following steps:

[0095] According to the above mass fractions, hydroxyethyl cellulose, modified lithium magnesium silicate, pH regulator, preservative, film-forming aid, dispersant, wetting agent, fumed silica, silicone acrylic emulsion, and deionized water are uniformly blended to obtain a suspended substance; modified lithium magnesium silicate, pH regulator, defoaming agent, preservative, film-forming aid, silicone acrylic emulsion, and deionized water are uniformly blended to obtain a suspension, and then the suspended substance and the suspension are blended in a mass ratio of 6:4, and dispersed at 1000 r / min for 50 min to obtain a functional filler low-viscosity suspended matte top varnish composition.

[0096] Comparative Examples 1-4

[0097] Comparative Example 1-4 is set based on Example 1-4. The difference between Comparative Example 1-4 and Example 1-4 is that the modified lithium magnesium silicate in the formula is replaced by unmodified lithium magnesium silicate, and the other ingredients and preparation method are the same as those of Example 1-4.

[0098] Test Case

[0099] The performance tests were performed on the functional filler low-viscosity suspension compositions prepared in Examples 1-4 and Comparative Examples 1-4.

[0100] The test method is as follows:

[0101] High temperature stability: 200 mL samples of each of the functional filler low-viscosity suspension composition prepared in the examples and comparative examples were taken, placed in a transparent container and sealed, and stored in a 50°C oven. The samples were taken out and their appearance was observed on the 7th, 30th, and 60th days.

[0102] Room temperature stability: 200 mL samples of each of the functional filler low-viscosity suspension composition prepared in the examples and comparative examples were taken, placed in a transparent container, sealed, and stored at a constant temperature of 25°C. The samples were taken out on the 7th, 30th, and 60th days to observe their appearance.

[0103] The test results are shown in Table 1.

[0104] Table 1 Performance test results

[0105]

[0106] As can be seen in Table 1, the functional filler low-viscosity suspension compositions prepared in Examples 1-4 of the present invention exhibit excellent performance, remaining stable under a variety of conditions without significant delamination, precipitation, or agglomeration. Comparative Examples 1-4, however, replace modified lithium magnesium silicate. While Comparative Example 2 exhibited no precipitation at a lower filler content, Comparative Examples 1, 3, and 4 failed to achieve the desired performance improvement, exhibiting significant precipitation and delamination after prolonged testing. In summary, the functional filler low-viscosity suspension compositions of the present invention exhibit excellent performance, addressing the shortcomings of the prior art and possessing promising application prospects.

[0107] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0108] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A functional filler low-viscosity suspension composition, characterized in that: The functional filler low-viscosity suspension composition comprises a suspended substance and a suspension liquid; The suspended matter includes the following components by mass fraction: Hydroxyethyl cellulose 0.2-2% Modified lithium magnesium silicate 0.05-1% Additive 1 0.5-10% Functional filler 0.5-25% Solvent residue; The suspension includes the following components by mass fraction: Modified lithium magnesium silicate 0.3-0.8% Additive 2 0.5-10% Solvent residue; in, The modified lithium magnesium silicate is dioctadecyldimethylammonium bromide modified lithium magnesium silicate; the lithium magnesium silicate is dispersed in water to form a gel, and then dioctadecyldimethylammonium bromide is added and heated to react. The dioctadecyldimethylammonium bromide has a cationic structure and replaces the exchangeable cations between the lithium magnesium silicate layers, inserting into the lithium magnesium silicate layers in the form of exchange adsorption. Excess dioctadecyldimethylammonium bromide can also be adsorbed on the surface of the lithium magnesium silicate by physical adsorption. The preparation method of the modified lithium magnesium silicate comprises the following steps: Dispersing lithium magnesium silicate in water, adjusting the pH, heating and stirring, then adding dioctadecyldimethylammonium bromide, heating and stirring to react, purifying, drying, and grinding to obtain the modified lithium magnesium silicate; The solvent is water.

2. The low-viscosity suspension composition of functional filler according to claim 1, characterized in that: The pH is 6.5-7.

5.

3. The functional filler low-viscosity suspension composition according to claim 1, characterized in that: The heating and stirring temperature is 40-50° C., and the time is 0.5-1 h; the heating and stirring reaction temperature is 70-90° C., and the time is 2-5 h.

4. The low-viscosity suspension composition of functional filler according to claim 1, characterized in that: The functional filler is selected from one or more of montmorillonite, fumed silica, rutile titanium dioxide, calcined kaolin, talc, calcium carbonate, pollination pollen, nano-titanium dioxide composite photocatalytic diatomaceous earth, zinc molybdate, silver molybdate, calcium arsenate, and aluminum arsenate.

5. The low-viscosity suspension composition of functional filler according to claim 1, characterized in that: The auxiliary agent 1 and the auxiliary agent 2 are independently selected from one or more of a dispersant, a wetting agent, a defoaming agent, a preservative, a mildew preventer, a pH regulator, a film-forming aid, an antifreeze agent, a thickener, a leveling agent, a foaming agent, a foam stabilizer, and a foaming agent.

6. The functional filler low-viscosity suspension composition according to claim 1, characterized in that: The mass ratio of the suspended matter to the suspension liquid is (1-6):(4-9).

7. The method for preparing the low-viscosity suspension composition of functional filler according to any one of claims 1 to 6, characterized in that: The method for preparing the functional filler low-viscosity suspension composition comprises the following steps: Hydroxyethyl cellulose, modified lithium magnesium silicate, auxiliary agent 1, functional filler, and solvent are blended to obtain a suspension; modified lithium magnesium silicate, auxiliary agent 2, and solvent are blended to obtain a suspension, and then the suspension and the suspension are blended, stirred, and dispersed uniformly to obtain a product.

8. Use of the low-viscosity suspension composition of functional fillers according to any one of claims 1 to 6 in antibacterial compositions, formaldehyde-removing compositions, pollen sprays and varnishes.

Images