CN114656841A - Environment-friendly antibacterial polymer emulsion building waterproof coating and preparation method thereof - Google Patents

Environment-friendly antibacterial polymer emulsion building waterproof coating and preparation method thereof Download PDF

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CN114656841A
CN114656841A CN202210258081.XA CN202210258081A CN114656841A CN 114656841 A CN114656841 A CN 114656841A CN 202210258081 A CN202210258081 A CN 202210258081A CN 114656841 A CN114656841 A CN 114656841A
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waterproof coating
environment
polymer emulsion
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赵建成
陆永平
张鑫宇
李建峰
郭晓静
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Beijing Oriental Yuhong Waterproof Technology Co Ltd
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Beijing Oriental Yuhong Waterproof Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D123/00Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/02Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D123/04Homopolymers or copolymers of ethene
    • C09D123/08Copolymers of ethene
    • C09D123/0846Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C09D123/0853Vinylacetate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2237Oxides; Hydroxides of metals of titanium
    • C08K2003/2241Titanium dioxide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/30Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045Sulfates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
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  • Inorganic Chemistry (AREA)
  • Plant Pathology (AREA)
  • Paints Or Removers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention relates to an environment-friendly antibacterial polymer emulsion building waterproof coating and a preparation method thereof; according to the weight portion, comprises 450 portions of ethylene-polyvinyl acetate emulsion 350-450 portions, 16-33 portions of bactericide, 550 portions of filler 350-550 portions, 20-40 portions of plasticizer, 3-6 portions of dispersant, 3-6 portions of defoamer and 80-110 portions of deionized water; the design of the environment-friendly antibacterial polymer emulsion building waterproof coating and the preparation method thereof is used for solving the technical problems of poor matching property, poor antibacterial stability and non-lasting antibacterial effect of the existing polymer emulsion waterproof coating in the prior art.

Description

Environment-friendly antibacterial polymer emulsion building waterproof coating and preparation method thereof
Technical Field
The invention relates to the technical field of waterproof coatings, in particular to an environment-friendly antibacterial polymer emulsion building waterproof coating and a preparation method thereof.
Background
The polymer emulsion waterproof building coating is a single-component water emulsion waterproof coating prepared by taking polymer emulsion as a main raw material and adding other additives, has better base layer cracking resistance due to higher elongation of a coating film, is ready to use after opening a barrel and convenient to construct, is widely applied in the market, and has the execution standard of type I in JC/T864-2008 polymer emulsion waterproof building coating. In the production process of the waterproof coating product, bacteria and mould are inevitably existed in the product due to raw materials, production water, production pipelines and other reasons, and if the bacteria and mould are not controlled, the product is inevitably smelled, mildewed and deteriorated in the storage process, and the use effect of the product is seriously influenced. Meanwhile, microorganisms such as various moulds are easy to breed when the waterproof coating product is exposed in a humid environment for a long time, the moulds can enter pores of cement to destroy film-forming substances, so that the waterproof performance of the waterproof coating product is reduced, even the impermeable waterproof performance is lost, the waterproof effect of the waterproof coating product is seriously influenced, the apparent effect is poor, and the using function and the living experience of a building are influenced. The introduction of the mildew-proof antibacterial agent can effectively inhibit the growth of mildew and play a certain protection role, but the traditional water-based antibacterial anticorrosive paint has poor function matching, and the paint system has the problems of poor stability, poor comprehensive performance of antibiosis, mildew prevention and water prevention and the like.
The invention discloses a single-component corrosion-resistant and non-laminated acrylic waterproof coating in patent CN201610012228.1, a high-strength and high-water-resistance polymer emulsion building waterproof coating in patent CN201810679710.X and a novel antibacterial and mildewproof waterproof coating in patent CN202110052083.9 and a preparation method thereof, which are all prepared polymer emulsion waterproof coatings, although different emulsions are adopted and added functional auxiliaries are different, the adopted bactericides are all organic bactericides of isothiazolone type, and the bactericides have certain toxicity to human bodies and long-acting property cannot be ensured.
In order to solve the corrosion prevention problem of the waterproof coating, the invention patent CN201710060295.5 discloses a waterproof coating, which comprises a water-based acrylic polymer emulsion, deionized water, sericite powder, rutile titanium dioxide, silicon micro, sodium hexametaphosphate, propylene glycol monobutyl ether, a water-based fatty amide surfactant, carboxymethyl cellulose, a silane coupling agent, a wetting agent and an antibacterial agent, wherein the antibacterial agent adopts a silver zeolite antibacterial agent. The bactericide is a bactericide taking nano-silver as a load, has good bactericidal effect, but has bactericidal persistence of only 200 days, which is equivalent to that of an organic bactericide. The action mechanism of the bactericide is photocatalytic sterilization, no bactericidal property exists under the condition of no ultraviolet rays, silver belongs to noble metal, the cost for preparing nano silver is very high, the applicability of the nano silver antibacterial agent is not very high, and the bactericide can lose effectiveness in environments with high salt content and the like.
Among other types of paint products, patent CN201610009429.6 "an antibacterial and antifungal polymer modified spray asphalt waterproof paint and its using method" describes a two-component waterproof paint, which is divided into liquid material and powder material, wherein the liquid material contains anionic emulsified asphalt, polymer emulsion, thickener, water, stabilizer, dispersant, wetting agent, defoaming agent, filler bactericide, and the bactericide is one or a mixture of two or more of nano silver sol, silver phosphate, glass silver-carrying antibacterial agent, silver-carrying antibacterial agent of phosphoric acid, copper silver-carrying antibacterial agent of phosphoric acid, calcium phosphate silver-carrying antibacterial agent, dodecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium chloride, tetradecyl dimethyl benzyl ammonium chloride, and trimethyl chitosan ammonium chloride. The invention patent CN201811140226.6 'an energy-saving environment-friendly building coating and a preparation method thereof' introduces a building coating, the main components of which comprise polymer emulsion, common filler, functional filler, water, protective glue solution, mildew preventive, antibacterial agent, dispersant, rheological additive and NXZ defoaming agent. Wherein the antiseptic is octyl-isothiazolinone, the antibacterial agent is prepared by synthesis, halloysite nanotube and silver nitrate solution are mixed, solid content of the halloysite nanotube is guaranteed to be 10%, the temperature is raised to 88 ℃, stirring is carried out for 60-65min at constant temperature, then suction filtration is carried out, and precipitate is dried to obtain a precursor; calcining the precursor at 400 ℃ for 55-60min to finally prepare the catalyst. Although the composition, the application field and the group effect of the product of the two patents are different, the application of the antibacterial agent is relatively consistent, different types of silver ion-loaded and organic antibacterial agents are adopted for composite use, and although the two antibacterial agents can play a better antibacterial effect when used together, the problems of ultraviolet catalysis and short durability of the silver ion-loaded antibacterial agent and the problems of high toxicity and short durability of the organic antibacterial agent are not solved, and the antibacterial system has certain defects.
Therefore, in order to solve the above problems, the present invention urgently needs to provide an environment-friendly antibacterial polymer emulsion waterproof coating for buildings and a preparation method thereof.
Disclosure of Invention
The invention aims to provide an environment-friendly antibacterial polymer emulsion building waterproof coating and a preparation method thereof, and solves the technical problems of poor matching property, poor antibacterial stability and non-lasting antibacterial effect of a polymer emulsion waterproof coating sterilization system in the prior art through the design of the environment-friendly antibacterial polymer emulsion building waterproof coating and the preparation method thereof.
The environment-friendly antibacterial polymer emulsion building waterproof coating provided by the invention comprises, by weight, 450 parts of ethylene-polyvinyl acetate emulsion 350-containing materials, 16-33 parts of bactericide, 550 parts of filler 350-containing materials, 20-40 parts of plasticizer, 3-6 parts of dispersant, 3-6 parts of defoaming agent and 80-110 parts of deionized water.
Preferably, the bactericide comprises at least one of a polyquaternary phosphonium salt bactericide, basic magnesium hypochlorite and nano titanium dioxide.
Preferably, the mass ratio of the polyquaternary phosphonium salt bactericide, the basic magnesium hypochlorite and the nano titanium dioxide in the bactericide is (1-3): (5-10): (10-20).
Preferably, the filler comprises at least one of mica powder and precipitated barium sulfate.
Preferably, the mass ratio of the mica powder to the precipitated barium sulfate in the filler is (100-200): (250-350).
Preferably, the plasticizer is a chlorinated paraffin.
Preferably, the dispersant is a sodium polyacrylate.
Preferably, the defoamer is a polyether defoamer.
Preferably, the mass of the deionized water accounts for 7-15% of the total mass of the raw materials.
The invention also provides a preparation method of the environment-friendly antibacterial polymer emulsion building waterproof coating, which comprises the following preparation steps:
weighing raw materials according to a proportion, adding the measured deionized water into a liquid material stirring cylinder, starting a dispersion machine of the stirring cylinder, keeping the rotating speed at 220r/min, sequentially adding a dispersing agent and a defoaming agent, and stirring for 2-5 minutes;
sequentially adding ethylene-polyvinyl acetate emulsion and plasticizer, and stirring for 3-6 minutes at the rotation speed of 250-350 r/min;
slowly adding the nano titanium dioxide, the mica powder and the precipitated barium sulfate in turn, and stirring for 18-22 minutes at the rotation speed of 750-;
sequentially and slowly adding basic magnesium hypochlorite and polyquaternary phosphonium salt bactericide, keeping the rotation speed of 550-650r/min and stirring for 6-10 minutes;
the rotating speed is reduced to 180 and 220r/min, stirring is carried out for 2-6 minutes, and the single-component waterproof coating is obtained after mechanical defoaming and finished product filling is carried out.
Compared with the prior art, the environment-friendly antibacterial polymer emulsion building waterproof coating and the preparation method thereof provided by the invention have the following steps:
1. the environment-friendly antibacterial polymer emulsion building waterproof coating and the preparation method thereof provided by the invention have the advantages that the design that the coating comprises, by weight, 450 parts of ethylene-polyvinyl acetate emulsion 350-containing-ketone, 16-33 parts of bactericide, 550 parts of filler 350-containing-ketone, 20-40 parts of plasticizer, 3-6 parts of dispersant, 3-6 parts of defoaming agent and 80-110 parts of deionized water is adopted, the product has a stable and long-acting bactericidal effect by changing the bactericidal system of the product, the stability of the product in the storage period is ensured, the bacterial growth is prevented after the product is used for forming a film, a stable and effective waterproof coating is provided, and the excellent waterproof effect is exerted.
2. According to the environment-friendly antibacterial polymer emulsion building waterproof coating and the preparation method thereof provided by the invention, the ethylene-polyvinyl acetate emulsion is matched with basic magnesium hypochlorite to be used, and the polymer emulsion building waterproof coating prepared by matching the polyquaternary phosphonium salt bactericide and the nano titanium dioxide solves the problems of poor antibacterial matching, poor stability of a coating system, poor antibacterial, mildewproof and waterproof comprehensive performance and the like of the product, improves the environment-friendly performance and antibacterial long-acting performance of the product, and enables the storage performance of the product to be stable for a long time.
3. According to the environment-friendly antibacterial polymer emulsion building waterproof coating and the preparation method thereof provided by the invention, through the preparation method of the environment-friendly antibacterial polymer emulsion building waterproof coating, the antibacterial performance has long-acting performance, and the environment-friendly antibacterial polymer emulsion building waterproof coating still has good antibacterial performance even after film forming, the finally formed waterproof film has stable and lasting performance, the problem of performance reduction of the waterproof film caused by mildew deterioration can not occur, the operation is simple, the cost is low, the environment-friendly antibacterial polymer emulsion building waterproof coating is environment-friendly and pollution-free, can be massively produced and applied, and has strong practicability.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an environment-friendly antibacterial polymer emulsion building waterproof coating which comprises, by weight, 450 parts of ethylene-polyvinyl acetate emulsion 350-containing materials, 16-33 parts of bactericide, 550 parts of filler 350-containing materials, 20-40 parts of plasticizer, 3-6 parts of dispersant, 3-6 parts of defoaming agent and 80-110 parts of deionized water.
Specifically, the bactericide comprises at least one of a polyquaternary phosphonium salt bactericide, basic magnesium hypochlorite and nano titanium dioxide.
Specifically, the mass ratio of the polyquaternary phosphonium salt bactericide, the basic magnesium hypochlorite and the nano titanium dioxide in the bactericide is (1-3): (5-10): (10-20).
Specifically, the filler includes at least one of mica powder and precipitated barium sulfate.
Specifically, the mass ratio of the mica powder to the precipitated barium sulfate in the filler is (100-: (250-350).
Specifically, the plasticizer is chlorinated paraffin.
Specifically, the dispersant is a sodium polyacrylate salt.
Specifically, the defoaming agent is a polyether type defoaming agent.
Specifically, the mass of the deionized water accounts for 7-15% of the total mass of the raw materials.
The invention also provides a preparation method of the environment-friendly antibacterial polymer emulsion building waterproof coating, which comprises the following preparation steps:
weighing raw materials according to a proportion, adding the measured deionized water into a liquid material stirring cylinder, starting a dispersion machine of the stirring cylinder, keeping the rotating speed at 220r/min, sequentially adding a dispersing agent and a defoaming agent, and stirring for 2-5 minutes;
sequentially adding ethylene-polyvinyl acetate emulsion and plasticizer, and stirring for 3-6 minutes at the rotation speed of 250-350 r/min;
slowly adding the nano titanium dioxide, the mica powder and the precipitated barium sulfate in turn, and stirring for 18-22 minutes at the rotation speed of 750-;
sequentially and slowly adding basic magnesium hypochlorite and the polyquaternary phosphonium salt bactericide, keeping the rotation speed of 550 and 650r/min, and stirring for 6-10 minutes;
the rotating speed is reduced to 180 and 220r/min, stirring is carried out for 2-6 minutes, and the single-component waterproof coating is obtained after mechanical defoaming and finished product filling is carried out.
The environment-friendly antibacterial polymer emulsion building waterproof coating and the preparation method thereof provided by the invention have the advantages that the design that the coating comprises, by weight, 450 parts of ethylene-polyvinyl acetate emulsion 350-containing-ketone, 16-33 parts of bactericide, 550 parts of filler 350-containing-ketone, 20-40 parts of plasticizer, 3-6 parts of dispersant, 3-6 parts of defoaming agent and 80-110 parts of deionized water is adopted, the product has a stable and long-acting bactericidal effect by changing the bactericidal system of the product, the stability of the product in the storage period is ensured, the bacterial growth is prevented after the product is used for forming a film, a stable and effective waterproof coating is provided, and the excellent waterproof effect is exerted.
According to the environment-friendly antibacterial polymer emulsion building waterproof coating and the preparation method thereof provided by the invention, the ethylene-polyvinyl acetate emulsion is matched with basic magnesium hypochlorite to be used, and the polymer emulsion building waterproof coating prepared by matching the polyquaternary phosphonium salt bactericide and the nano titanium dioxide solves the problems of poor antibacterial matching, poor stability of a coating system, poor antibacterial, mildewproof and waterproof comprehensive performance and the like of the product, improves the environment-friendly performance and antibacterial long-acting performance of the product, and enables the storage performance of the product to be stable for a long time.
According to the environment-friendly antibacterial polymer emulsion building waterproof coating and the preparation method thereof provided by the invention, through the preparation method of the environment-friendly antibacterial polymer emulsion building waterproof coating, the antibacterial performance has long-acting performance, and the environment-friendly antibacterial polymer emulsion building waterproof coating still has good antibacterial performance even after film forming, the finally formed waterproof film has stable and lasting performance, the problem of performance reduction of the waterproof film caused by mildew deterioration can not occur, the operation is simple, the cost is low, the environment-friendly antibacterial polymer emulsion building waterproof coating is environment-friendly and pollution-free, can be massively produced and applied, and has strong practicability.
Example one
Preparation of sample 1:
weighing 400 parts of ethylene-polyvinyl acetate emulsion, 2 parts of polyquaternary phosphonium salt bactericide, 5 parts of basic magnesium hypochlorite, 20 parts of nano titanium dioxide, 150 parts of mica powder, 300 parts of precipitated barium sulfate, 30 parts of plasticizer, 4 parts of dispersant, 6 parts of defoamer and 90 parts of deionized water;
adding deionized water into a liquid material stirring tank, starting a dispersion machine of the stirring tank, keeping the rotating speed at 200r/min, sequentially adding a dispersing agent and a defoaming agent, and stirring for 3 minutes;
sequentially adding ethylene-polyvinyl acetate emulsion and a plasticizer, and stirring for 5 minutes at the rotating speed of 300 r/min;
sequentially and slowly adding the mica powder, the precipitated barium sulfate and the nano titanium dioxide, and stirring for 20 minutes at the rotating speed of 800 r/min;
finally, the polyquaternary phosphonium salt bactericide and the basic magnesium hypochlorite are slowly added in sequence, and the stirring is carried out for 8 minutes at the rotating speed of 600 r/min;
reducing the rotating speed to 200r/min, stirring for 4 minutes, and mechanically defoaming to obtain the single-component waterproof coating, and filling a finished product.
The properties of the environment-friendly antibacterial polymer emulsion waterproof coating for buildings prepared in the first embodiment are shown in table 1.
Example two
Preparation of sample 2:
sample 2 is the same as sample 1 in preparation method, except that 350 parts of ethylene-polyvinyl acetate emulsion, 1 part of polyquaternary phosphonium salt bactericide, 10 parts of nano titanium dioxide, 100 parts of mica powder, 250 parts of precipitated barium sulfate, 20 parts of plasticizer, 3 parts of dispersant and 3 parts of defoamer are weighed, and the obtained properties are shown in table 1.
By comparing sample 1 with sample 2, it is found that the tensile strength, elongation at break and antibacterial effect of sample 1 are better than those of sample 2.
EXAMPLE III
Preparation of sample 3:
sample 3 was prepared in the same manner as sample 1 except that 450 parts of the ethylene-polyvinyl acetate emulsion, 3 parts of the polyquaternary phosphonium salt bactericide, 10 parts of basic magnesium hypochlorite, 200 parts of mica powder, 350 parts of precipitated barium sulfate, 40 parts of the plasticizer and 6 parts of the dispersant were weighed, and the obtained properties are shown in table 1.
By comparing the sample 1 with the sample 3, the tensile strength, the elongation at break and the antibacterial effect of the sample 1 are better than those of the sample 3.
Example four
Preparation of sample 4:
sample 4 was prepared identically to sample 1 except that 7.5 parts of basic magnesium hypochlorite, 15 parts of nano titanium dioxide, 4.5 parts of dispersant, and 4.5 parts of defoamer were weighed and the resulting properties are shown in table 1.
Through comparison of the sample 1 and the sample 4, the result shows that the tensile strength and the elongation at break of the sample 1 are not obviously changed compared with the sample 4, and the antibacterial effect is better than that of the sample 4.
EXAMPLE five
Preparation of sample 5:
sample 5 was prepared in the same manner as sample 1 except that 450 parts of the ethylene-polyvinyl acetate emulsion was weighed to obtain properties shown in Table 1.
Preparation of sample 6:
sample 6 was prepared in the same manner as sample 1 except that 350 parts of the ethylene-polyvinyl acetate emulsion was weighed and the properties obtained are shown in Table 1.
Through comparison of the sample 1, the sample 5 and the sample 6, the tensile strength and the elongation at break of the sample 1 are superior to those of the sample 5, and the antibacterial effect is not obviously changed; compared with sample 6, sample 1 has no obvious change in tensile strength and elongation at break, and the antibacterial effect is superior to that of sample 6.
EXAMPLE six
Preparation of sample 7:
sample 7 was prepared identically to sample 1 except that 10 parts of basic magnesium hypochlorite was weighed out and the properties obtained are shown in Table 1.
Preparation of sample 8:
sample 8 was prepared identically to sample 1 except that 7.5 parts of basic magnesium hypochlorite was weighed out and the properties obtained are shown in Table 1.
Through comparison of the sample 1, the sample 7 and the sample 8, the tensile strength and the elongation at break of the sample 1 are not obviously changed compared with the sample 7, and the antibacterial effect is better than that of the sample 7; compared with the sample 8, the sample 1 has no obvious change in tensile strength and elongation at break, and the antibacterial effect is better than that of the sample 8.
EXAMPLE seven
Preparation of sample 9:
sample 9 was prepared in the same manner as sample 1 except that 3 parts of the polypentaphosphonium salt-based fungicide was weighed out and the obtained properties were shown in Table 1.
Preparation of sample 10:
sample 10 was prepared in the same manner as sample 1 except that 1 part of the polyquaternary phosphonium salt-based bactericide was weighed out to obtain the properties shown in Table 1.
Through comparison of the sample 1, the sample 9 and the sample 10, the tensile strength and the elongation at break of the sample 1 are not obviously changed compared with the sample 9, and the antibacterial effect is superior to that of the sample 9; compared with the sample 10, the sample 1 has better tensile strength and elongation at break than the sample 10, and the antibacterial effect has no obvious change.
Example eight
Preparation of sample 11:
sample 11 was prepared in the same manner as sample 1 except that 100 parts of mica powder was weighed and the properties obtained are shown in table 1.
Preparation of sample 12:
sample 12 was prepared identically to sample 1 except that 200 parts of mica powder was weighed and the resulting properties are shown in table 1.
Through comparison of the sample 1, the sample 11 and the sample 12, the tensile strength and the elongation at break of the sample 1 are better than those of the sample 11, and the antibacterial effect is not obviously changed; sample 1 showed no significant change in tensile strength, elongation at break, and antimicrobial effect from sample 12.
Example nine
Preparation of sample 13:
sample 13 was prepared identically to sample 1 except that 40 parts of plasticizer were weighed and the properties obtained are shown in Table 1.
Preparation of sample 14:
sample 14 was prepared in the same manner as sample 1 except that 20 parts of the plasticizer was weighed to obtain the properties shown in Table 1.
Through comparison of the sample 1, the sample 13 and the sample 14, the tensile strength and the elongation at break of the sample 1 are better than those of the sample 13, and the antibacterial effect is not obviously changed; compared with the sample 14, the sample 1 has no obvious change in tensile strength and elongation at break, and the antibacterial effect is better than that of the sample 14.
TABLE 1 detection results of the performance of the environmental protection antibacterial polymer emulsion building waterproof coating
Figure BDA0003549507440000101
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An environment-friendly antibacterial polymer emulsion building waterproof coating is characterized in that: according to the weight portion, the material comprises 450 portions of ethylene-polyvinyl acetate emulsion 350-450 portions, 16-33 portions of bactericide, 550 portions of filler 350-550 portions, 20-40 portions of plasticizer, 3-6 portions of dispersant, 3-6 portions of defoamer and 80-110 portions of deionized water.
2. The environment-friendly antibacterial polymer emulsion building waterproof coating as claimed in claim 1, which is characterized in that: the bactericide comprises at least one of polyquaternary phosphonium salt bactericide, basic magnesium hypochlorite and nano titanium dioxide.
3. The environment-friendly antibacterial polymer emulsion building waterproof coating as claimed in claim 1, characterized in that: the mass ratio of the polyquaternary phosphonium salt bactericide, the basic magnesium hypochlorite and the nano titanium dioxide in the bactericide is (1-3): (5-10): (10-20).
4. The environment-friendly antibacterial polymer emulsion building waterproof coating as claimed in claim 1, which is characterized in that: the filler includes at least one of mica powder and precipitated barium sulfate.
5. The environment-friendly antibacterial polymer emulsion building waterproof coating as claimed in claim 1, characterized in that: the mass ratio of the mica powder to the precipitated barium sulfate in the filler is (100-: (250-350).
6. The environment-friendly antibacterial polymer emulsion building waterproof coating as claimed in claim 1, characterized in that: the plasticizer is chlorinated paraffin.
7. The environment-friendly antibacterial polymer emulsion building waterproof coating as claimed in claim 1, which is characterized in that: the dispersant is sodium polyacrylate.
8. The environment-friendly antibacterial polymer emulsion building waterproof coating as claimed in claim 1, characterized in that: the defoaming agent is polyether defoaming agent.
9. The environment-friendly antibacterial polymer emulsion building waterproof coating as claimed in claim 1, characterized in that: the mass of the deionized water accounts for 7-15% of the total mass of the raw materials.
10. A method for preparing the environment-friendly antibacterial polymer emulsion building waterproof coating based on any one of claims 1 to 9, which is characterized by comprising the following steps: the preparation method comprises the following preparation steps:
weighing raw materials according to a proportion, adding the measured deionized water into a liquid material stirring cylinder, starting a dispersion machine of the stirring cylinder, keeping the rotating speed at 220r/min, sequentially adding a dispersing agent and a defoaming agent, and stirring for 2-5 minutes;
sequentially adding ethylene-polyvinyl acetate emulsion and plasticizer, and stirring for 3-6 minutes at the rotation speed of 250-350 r/min;
slowly adding the nano titanium dioxide, the mica powder and the precipitated barium sulfate in turn, keeping the rotation speed of 750 plus materials at 850r/min, and stirring for 18-22 minutes;
sequentially and slowly adding basic magnesium hypochlorite and the polyquaternary phosphonium salt bactericide, keeping the rotation speed of 550 and 650r/min, and stirring for 6-10 minutes;
the rotating speed is reduced to 180-220r/min, the mixture is stirred for 2 to 6 minutes, and the single-component waterproof coating is obtained after mechanical defoaming and finished product filling is carried out.
CN202210258081.XA 2022-03-16 2022-03-16 Environment-friendly antibacterial polymer emulsion building waterproof coating and preparation method thereof Pending CN114656841A (en)

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