TWI596170B - Plant sterilization deworming functional interior latex paint - Google Patents

Description

Plant sterilization and deworming functional interior wall latex paint

The invention relates to the technical field of interior wall latex paint, in particular to a plant sterilization and insect repellent functional interior wall latex paint and a preparation method thereof.

Viruses and bacteria are everywhere in our living environment. They pose a threat to human health. In addition, pests such as mosquitoes, flies, cockroaches, fleas, bedbugs and cockroaches can spread diseases and affect people's health. In this regard, human beings are constantly developing sterilization and deworming technology. For example, there is a technical branch of bactericidal coatings in the coatings industry.

The antibacterial agent in the antibacterial coating is usually an inorganic antibacterial agent such as silver ion, an organic antibacterial agent such as a quaternary ammonium salt type antibacterial agent, a natural antibacterial agent such as chitosan and a derivative thereof, sorbic acid or the like. Although the silver ion bactericide has strong bactericidal, antibacterial and antifungal ability, studies have shown that long-term exposure to nano-silver can cause certain damage to the body. If you accidentally eat nano-silver particles, it will cause serious harm to the human liver. Therefore, for interior decoration with infant activities and contact, interior latex paint is not suitable for use with nano silver ion bactericide. The quaternary ammonium salt-based antibacterial agent also has certain toxicity, and the sterilization ability of chitosan and its derivatives, sorbic acid, etc. is not strong enough, so it is not recommended to be added to the interior wall paint.

Patent CN1045308043A discloses an environmentally-friendly thermal insulation architectural coating containing styrene-acrylic emulsion, hydroxyethyl cellulose and chitosan, which has antibacterial effect, but as mentioned above, natural bacteriostatic agents such as chitosan have insufficient bactericidal ability. Strong. Patentes CN104449165A, CN104387856A, CN104387859A, CN104371436A, CN103834242A all disclose hydroxyethyl cellulose, Interior wall latex paints of styrene-acrylic emulsions and/or acrylate emulsions, mildew inhibitors and/or fungicides, these interior wall coatings have anti-mildew and/or bactericidal effects, but they all use organic mildew inhibitors and/or Or fungicides, these substances are not environmentally safe and have certain toxicity.

Patent CN102304305A discloses a formaldehyde removal coating containing a persimmon peel extract, which is also capable of inhibiting bacteria and removing formaldehyde, but the persimmon peel extract content in the paint is large, the cost is high, and since the active ingredient in the extract is easily volatilized, The bacteriostatic durability of the coating is not sufficient.

Therefore, there is an urgent need for an interior latex paint that is safe, environmentally friendly, has minimal damage to human health, and is highly effective and durable in sterilizing, antibacterial and deworming. The paint does not affect human health, and it can effectively and effectively sterilize and deworm.

The object of the present invention is to provide a plant sterilization and insect repellent functional interior wall latex paint, which comprises a plant-based composite nano-bacterial powder prepared by infrared radiation dehydration technology and nano-grinding production technology. The interior wall latex paint is safe, environmentally friendly, efficient and durable, antibacterial and insect repellent.

Another object of the present invention is to provide a method of preparing a plant sterilization and insect repellent functional interior wall latex paint. The preparation method is simple in operation and can be industrially produced.

The invention provides a plant sterilization and deworming functional type interior wall latex paint, which comprises the following components by weight: 120-150 parts of polymer emulsion, 3-5 parts of hydroxyethyl cellulose, and phytochemical composite nano-bacterial powder 2 - 5 parts, antifreeze 15-25 parts, film forming aid 7-9 parts, thickener 3-6 parts, leveling agent 3-5 parts, filler 180-220 parts, water 350-450 parts.

Among them, the polymer emulsion may be various conventional emulsions for coatings, preferably styrene-acrylic emulsions and/or pure acrylic emulsions (i.e., acrylate emulsions). Among them, the styrene-acrylic emulsion has small particle size, suitable viscosity, hard film, alkali resistance, scrub resistance and calcium ion stability, high bonding strength and strong adhesion. Good bearing capacity, pigment color development and various stability characteristics. The corresponding emulsion coating film has good chemical resistance, scrub resistance, leveling property and is environmentally friendly.

For hydroxyethyl cellulose, it is a nonionic surfactant that has the functions of thickening, suspending, bonding, bubbling, film forming, dispersing, retaining water and providing a protective colloid. Its water retention capacity is twice as high as that of methyl cellulose, and it has good flow regulation; its dispersing ability is the worst dispersing ability compared with the recognized methyl cellulose and hydroxypropyl methyl cellulose, but it has the strongest protective colloid ability. It has a wide range of solubility, viscosity characteristics, non-thermogelability; it can coexist with other water-soluble polymers, surfactants and salts in a wide range, and is an excellent colloid thickener containing a high concentration of electrolyte solution. . Hydroxyethyl cellulose is preferably hydroxyethyl cellulose of Feicheng Yutian Chemical.

For the botanical composite nano-bacterial powder, preferably, it contains one or more of nano-pursal powder, nano-scented eucalyptus powder, nano-cedar powder, corn pine needle powder, and nano arborvitae powder, correspondingly Plants are made by infrared radiation dehydration technology and nano production technology.

Preferably, the ratio of the weight of each raw material in the phytochemical composite nano sterilizing powder is nanometer dentate powder: nano citron tree powder: nano cedar powder: nano pine needle powder: nano arborvitae powder=1 -5:1-3:0-3:1-3:0-2. More preferably, the nanopowder has a particle size of 40 to 100 nm.

Purslane is widely found in China. It has many functions: it can deworm at home, and it can clear away heat and detoxify, replenish qi and tonic, and can be used to treat various diseases. The alcohol extract in Portulaca oleracea has a high inhibitory effect on Escherichia coli, Proteus, Shigella, Typhoid, and Paratyphoid bacillus, and has different degrees of Staphylococcus aureus, fungi such as A. sinensis and Mycobacterium tuberculosis. The inhibitory effect can be used for the adjuvant treatment of various inflammations, and is known as the "natural antibiotic".

Pine needles, modern medical research shows that there are 65 components in fresh pine needles, the main components are alkane, enoic acid, ketene, sterols, and dry pine needles have 44 components, the main components are alkanoic acid, ketone Classes, esters and sterols, in which the content of sterols is relatively high. The form of the components in the dry pine needle is relatively stable. Pine needle volatile oils have phlegm, stomach, wind, heat, and profit Urinary, analgesic, deworming, antibacterial, anti-viral and other effects can cure chronic infection of the upper respiratory tract. At the same time, pine needle powder contains phytoncide and vitamins, which has the effect of preventing disease and disease, and can effectively resist the occurrence of human diseases.

The plants of the camphor tree all have camphor aroma, which can be used to extract camphor and oyster sauce. Toona sinensis is resistant to harmful gases such as chlorine, sulfur dioxide, ozone and fluorine. Its special fragrance can effectively repel mosquitoes and deworm. The leaves, branches, bark, roots and other volatile oils of camphor tree contain the essential components of camphor (54.54%), as well as 1,8-eucalyptol and a small amount of α-terpineol, β-pinene, α- Terpene, geranyl aldehyde, α-phellandene, decene, dragon and nerol. According to "Luchuan Materia Medica", the leaves, branches, bark and roots of camphor trees have the functions of killing insects, sterilizing and treating phlegm.

The leaves and branches of the arborvitae can be used to stop bleeding, diuretic and stomach, and detoxify and disperse; the seeds have the effect of calming the nerves, nourishing and strengthening. Platycladus essential oil has antibacterial, anti-inflammatory, astringent, diuretic, soft, phlegm, fungicidal and other effects.

Cedar wood contains very rich essential oils. The main components of cedar oil include A-Cedrene, B-Cedrene, Thujopsene, Sesquiterpenes, Cedar alcohol and Wad alcohol. Cedar oil has the medical effects of anti-lipid, anti-corrosion, sterilization, tonic, astringent, diuretic, menstruation, wart, insecticide and calming.

Plant essential oils or plant extracts have a certain volatility. If they are dropped on the surface of the object, they can be volatilized within 24-48 hours and cannot be kept persistent. Therefore, how to ensure the efficacy level of bactericidal, antibacterial, mildew and insect repellent of essential oils and extracts, and to ensure the durability of these properties, is very critical.

After continuous practice and exploration, it was found that the infrared dehydration technology can be used to wash and slice the fresh leaves and branches of the above plants, and then rapidly dehydrated and dried by infrared radiation heating, so that the water contained in the leaves and branches can be rapidly reduced. The loss of various essential oils and active ingredients in the leaves and branches of the plants is small. Infrared radiation dehydration technology helps the essential oils and active ingredients to remain in the leaves, branches and roots of the plants, and then grind and crush them through nano-grinding and grinding equipment. Nano-toothed glutinous rice powder with nanometer-sized particle size, nano pine needle powder, nano citron tree powder, nano arborvitae powder and nano cedar powder. Two or more of these nano-grade plant sterilization and deworming powders are mixed in a certain proportion, and the plant-based composite nano-bacterial powder is added to the coating, so that the coating has high-efficiency and continuous sterilization, antibacterial and anti-mildew. , deworming effect.

The above-mentioned plants with sterilization, antibacterial, deworming and antisepsis are abundant in various parts of China, and are abundant in Guangxi, Jiangxi, Fujian, Taiwan, Hunan, Hubei, Sichuan, Yunnan and other places, and artificial cultivation is carried out in many places in China. It is a renewable resource with a wide range of sources, easy to acquire and purchase. There are no shortages of materials and difficulties in obtaining and purchasing, and the cost is relatively low.

The interior wall latex paint of the invention adds the plant-based composite nano-bacterial powder prepared by the combination of infrared dehydration technology and nano production technology, and the sterilization, antibacterial and anti-mildew properties can exceed the industry standard HG/T3950-2007 antibacterial coating. 99% of Class I; antibacterial and mildew durability also exceeds Class I 95% of the industry standard HG/T3950-2007 antibacterial coating.

Preferably, the film forming aid is an environmentally friendly film forming aid ester alcohol 12 supplied by Eastman Teanol. The additive is a particularly excellent coalescing aid, is a filming aid for the polymerization emulsion, and is also a good solvent for the polymerization emulsion, and can effectively reduce the minimum film formation temperature of the polymerization emulsion. The additive has a certain volatility, and stays in the coating film to form a film during the film formation process, and all volatilizes after film formation, and does not remain in the dry film, so it does not affect the film properties. The solubility in water is low, and the stability of the polymerization emulsion is not affected after being added, but the film formation performance of the coating film can be remarkably improved, and the weather resistance, abrasion resistance, stain resistance and chemical resistance of the coating film can be improved. Improve coating color development.

The leveling agent is preferably BYK-375 of BYK Chemical, which is particularly suitable for use in aqueous systems with low co-solvent content and has good compatibility with these systems. It reacts with the base material through its primary hydroxyl group, so it is very suitable for the cross-linking type system. The leveling agent can improve the slipperiness, solvent resistance, weather resistance and less dust accumulation. Compared with the standard non-reactive organic hydrazine, the auxiliaries are more durable in the coating system due to the crosslinking of the reactive groups with the paint film, which significantly reduces the surface tension and enhances the wetting of the substrate. Flow and level and prevent the formation of the Bernard vortex.

The antifreeze agent is preferably propylene glycol, which is environmentally friendly and cost effective. The thickener is preferably a 2020 NPR nonionic polyurethane associative type produced by Rohm and Haas Company, which provides efficient medium shear thickening, promotes flow leveling, and provides good film fullness.

By adding a combination of the above various additives, the physical and chemical functions of the coating film can be enhanced and enhanced.

For the filler, various conventional fillers can be used. Preferably, it is selected from one or more of the group consisting of light calcium carbonate, heavy calcium carbonate and talc.

Preferably, the water in the raw material is pure water, and the tap water contains more impurities due to the addition of bleaching powder, etc., which may result in poor storage stability of the interior wall latex paint product.

In addition, other substances may be added according to the different nature of the plant sterilization and insect repellent functional interior latex paint product. For example, in order to obtain products of different colors, different pigments may be added, such as titanium dioxide (titanium dioxide), environmentally-friendly inorganic composite yellow pulp, environmentally-friendly inorganic composite red pulp, and the like. Among them, titanium white powder is preferably R-996 of Sichuan Longyan Titanium Industry Co., Ltd. Its surface is treated by bismuth, aluminum, zirconium coating and organic treatment. It has no physiological toxicity, stable chemical properties, excellent pigment performance, whiteness and brightness. Good gloss, hiding power, achromatic power and fluidity. The environmentally-friendly inorganic composite medium yellow pulp is preferably a color paste prepared in advance by the composite titanium yellow powder of Hunan Jufa Technology Co., Ltd. before use. The environmentally-friendly inorganic composite red pigment is preferably a color paste prepared in advance by the composite titanium red powder of Hunan Jufa Technology Co., Ltd. before use.

Further, titanium dioxide (titanium dioxide) R-996 is added in an amount of 120-160 parts by weight; and 10-20 parts by weight of water can constitute a plant-based insect repellent functional white interior wall emulsion paint.

Adding 40-60 parts by weight of yellow pulp in environmentally friendly inorganic compound; 3-8 parts by weight of water can constitute a yellow inner wall latex paint for plant sterilization and insect repellent function. Or directly add 5-20 parts by weight of the yellow paste in the environmentally-friendly inorganic compound to form a nano-anionic functional yellow interior wall latex paint.

Adding 40-60 parts by weight of environmentally-friendly inorganic compound red pulp; 3-8 parts by weight of water can constitute a red inner wall latex paint for plant sterilization and insect repellent function. Or directly add 5-20 parts by weight of environmentally friendly inorganic compound red pulp to form a nano-ion functional red inner wall latex paint.

The plant sterilization and deworming functional interior wall latex paint of the invention contains the plant-based composite nano-bacterial powder, and the component can play the role of anti-mildew and antibacterial sterilization, so that the preservative is no longer needed.

The invention also provides a method for preparing the above-mentioned plant sterilization and insect repellent functional interior wall latex paint, the method comprising the steps of: putting hydroxyethyl cellulose, water, antifreeze, plant-based composite nano-bacterial powder, filler into The vessel is subjected to high-speed stirring, followed by grinding to a suitable fineness and then transferred to a mixing vessel, followed by addition of a polymer emulsion, a film forming aid, a leveling agent and a thickener.

Preferably, the high-speed stirring speed is 1200-1600 rpm, and the time is 20-30 minutes; the grinding equipment is a horizontal sand grinder; the grinding fineness 30 μm; the stirring speed was 600-900 rpm when the polymer emulsion was added, and the stirring time was 5-15 minutes.

As with the foregoing, different types of pigments can be added depending on the color of the final product. According to the needs of the final viscosity of the product, according to customer requirements, thickeners can be added for adjustment.

The beneficial effects of the invention are:

1. A polymer emulsion, especially a styrene-acrylic emulsion, is used as a film-forming emulsion, and the corresponding lacquer product has good stability, scrub resistance, alkali resistance, water resistance, and color development.

2. The plant-based compound nano-bacterial powder is added to the raw material, which is prepared by the infrared dehydration technology and the nano production technology which are abundant and easily available, such as purslane, pine needle, camphor tree, oriental arborvitae and cedar. Green, environmentally friendly, low cost, but bactericidal, anti-bacterial, anti-mildew, deworming efficient and long-lasting. The sterilizing, antibacterial and antifungal performance of the interior wall latex paint of the invention exceeds 99% of the class I of the industry standard HG/T3950-2007 antibacterial coating; the durability of the antibacterial and mildewproof exceeds the industry standard HG/T3950-2007 antibacterial coating I Level 95%.

3. It is possible to obtain different performance interior latex paint products by adding different additives. The product range is rich and widely used, and the preparation method of the interior wall latex paint is also simple, the cost is low, and the industrial production can be achieved.

4. The product formulation design does not add a cosolvent containing volatile organic compounds, and does not contain heavy metals harmful to the human body. The product can achieve ultra-low VOC and has good environmental protection.

The invention will be further clarified by the specific examples of the invention given below, but they are not intended to limit the invention. Portions not specifically described in the detailed description are obtained using prior art, well-known technical means, and industry standards.

Unless otherwise stated, the parts used in the present invention are all parts by weight.

Preparation example of plant-based composite nano-bacterial powder

Washing and slicing fresh leaves, branches and roots of camphor tree, cedar, pine needle, arborvitae, and purslane, and rapidly dehydrating and drying by infrared radiation heating, the moisture contained in the roots of leaves and branches is rapidly reduced and dried. The nano-grinding production technology is used for grinding and pulverizing to obtain nano citron tree powder, nano cedar powder, nano pine needle powder, nano arborvitae powder, and nano dentate powder having a nanometer particle size. Then, these nano-grade vegetable germicidal powders are mixed in the proportion by weight shown in Table 1 to prepare corresponding vegetable-based composite nano-sterilized powder. The particle size of the nanopowder is also shown in Table 1.

Example 1

Prepare a plant bactericidal and insect repellent functional white interior latex paint according to the formula weight of Table 2, including the following steps:

a) According to the weight of the formula, the raw materials are used, and hydroxyethyl cellulose, purified water, auxiliary agent, antifreeze, titanium dioxide, vegetable nano-bacterial powder, and filler are sequentially put into the container and stirred at a high speed of 1400~1600 rpm. Every minute, after mixing evenly, grinding on a horizontal sander, grinding to fineness After 30μm, it is transferred to the mixing vessel, the rotation speed is reduced to 800 rpm, polymer emulsion, filming aid, leveling agent is added, and the thickener is added to adjust the viscosity to the customer.

b) Detection - filtration - packaging - sample retention.

Example 2

The adjustment of the formulation ratio of this embodiment is shown in Table 2. The specific implementation process is basically the same as that of Embodiment 1, except that the high-speed stirring speed is 1200-1400 rpm and the stirring time is 30 minutes.

Example 3

The adjustment of the formulation ratio of this embodiment is shown in Table 2. The specific implementation process is basically the same as that of Embodiment 1, except that the high-speed stirring speed is 1200-1400 rpm and the stirring time is 15 minutes.

Example 4

The adjustment of the formula ratio of this embodiment is shown in Table 2. The specific implementation process is basically the same as that of Embodiment 1.

The above-mentioned plant sterilization and deworming functional interior wall latex paint is tested according to national standard GB/T 9756-2009 "synthetic resin emulsion interior wall coating" and HG/T3950-2007 antibacterial coating, and the technical performance is tested. See Table 3.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and thus the equivalent changes made by the scope of the present invention remain within the scope of the present invention.

Claims (9)

A plant sterilization and deworming functional interior wall latex paint comprising the following components by weight: 140 parts of polymer emulsion, 4 parts of hydroxyethyl cellulose, 3 parts of plant-based composite nano-sterilization powder, 20 parts of anti-freezing agent 7 parts of film-forming auxiliary agent, 3-5 parts of thickener, 4 parts of leveling agent, 180 parts of filler and 450 parts of water; wherein the polymer emulsion accounts for the total amount of interior wall latex paint of the plant. The weight of the polymer is 140/933-120/790, the polymer emulsion is a styrene-acrylic emulsion or a pure acrylic emulsion, and the proportion of each raw material in the vegetable-based composite nano-bacterial powder is nanometer dentate powder: nano citron tree powder: Nano cedar powder: nano pine needle powder: nano arborvitae powder = 1-5: 1-3: 0-3: 1-3: 0-2. The plant bactericidal and deworming functional interior wall latex paint according to claim 1, wherein the phytochemical composite nano sterilizing system is made by the corresponding plants by infrared radiation dehydration technology and nano production technology. The plant bactericidal and insect-repellent functional interior wall latex paint according to claim 1, wherein the vegetable nano-bacterial powder has a particle size of 40-100 nm. The plant bactericidal and deworming functional type interior wall latex paint according to claim 1, wherein the filler is at least one selected from the group consisting of light calcium carbonate, heavy calcium carbonate and talc. The plant bactericidal and insect-repellent functional interior wall latex paint according to any one of claims 1 to 4, further comprising a pigment, which is titanium white powder. The plant bactericidal and insect repellent functional interior wall latex paint according to claim 5, wherein the titanium dioxide is 120-160 parts by weight. A plant sterilization and deworming functional interior wall latex paint comprising the following components by weight: 120-150 parts of polymer emulsion, 3-5 parts of hydroxyethyl cellulose, 2-5 parts of vegetable composite nano-bacterial powder , antifreeze 15-25 parts, film forming aid 8-9 parts, thickener 4-6 parts, leveling agent 3-5 parts, 200-220 parts of filler, 350-400 parts of water and 15 parts of pigment; wherein the pigment accounts for 15/790-15/770 of the total weight of the sterilizing and deworming functional interior wall latex paint of the plant, The polymer emulsion is a styrene-acrylic emulsion or a pure acrylic emulsion, and the proportion of each raw material in the vegetable-based composite nano-bacterial powder is nanometer dentate powder: nano citron tree powder: nano cedar powder: nano pine needle powder: nai Rice arborvitae powder = 1-5: 1-3: 0-3: 1-3: 0-2. The plant bactericidal and insect-repellent functional interior wall latex paint according to claim 7, wherein the vegetable nano-bacterial powder has a particle size of 40-100 nm. The invention relates to the plant sterilization and deworming functional type interior wall latex paint described in claim 7, wherein the pigment is selected from the group consisting of environmentally-friendly inorganic composite yellow pulp or environmentally-friendly inorganic composite red pulp.