CN110746883A - Waterproof and antifouling spray and preparation method thereof - Google Patents
Waterproof and antifouling spray and preparation method thereof Download PDFInfo
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- CN110746883A CN110746883A CN201911191656.5A CN201911191656A CN110746883A CN 110746883 A CN110746883 A CN 110746883A CN 201911191656 A CN201911191656 A CN 201911191656A CN 110746883 A CN110746883 A CN 110746883A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D129/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
- C09D129/02—Homopolymers or copolymers of unsaturated alcohols
- C09D129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
- C09D5/1668—Vinyl-type polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a waterproof and antifouling spray and a preparation method thereof, belonging to the technical field of surface treatment, and being characterized by comprising a solvent and the following components in percentage by weight: 3.8-33g/L of hydrophobic agent, 0.3-6g/L of dissolution promoting dispersant and 0.5-2g/L of film forming agent. In addition, the product is modified by KH560 coupling agent, and nano SiO is added2When a hydrophobic film is formed on the surface of a substance after spraying, the nano SiO2Form microcosmic coarse structure in hydrophobic membrane, promoted waterproof antifouling effect greatly. The invention does not contain fluorine and other harmful organic volatile substances, and is green and environment-friendly.
Description
Technical Field
The invention belongs to the technical field of surface treatment, and particularly relates to a waterproof and antifouling spray and a preparation method thereof.
Background
The common clothes, shoes, bags and other articles are hydrophilic, are not waterproof and antifouling, and are easily soaked, wetted and stained once being contacted with water. If the living goods are made of the hydrophobic materials, although the living goods are waterproof and antifouling, the cost is increased, and in addition, the defects of poor air permeability and poor comfort are also existed. If the surface properties of common materials are changed and the materials are endowed with hydrophobicity, the waterproof and antifouling functions are realized, and the method is economical, simple and convenient. In order to implement this idea, the current general method is to coat a hydrophobic film on the surface of a common material. However, this procedure can often only be carried out at the factory, since the implementation of these methods requires special equipment and technical support. For household articles, it is difficult to apply a hydrophobic film to the articles after the articles are purchased. In order to realize the coating of the hydrophobic membrane without professional equipment and professional technology in the household environment, thereby achieving the purpose of preventing water and dirt of the daily necessities, a spraying method can be adopted. However, the common waterproof and antifouling spray in the market contains fluorine and is toxic, or the common waterproof and antifouling spray needs to be stored in a metal pressure tank and sprayed at high pressure, or the common waterproof and antifouling spray needs to be heated and cured after being sprayed to form a film.
Disclosure of Invention
In view of the above, the invention designs a fluorine-free green environment-friendly waterproof and antifouling spray which can be conveniently sprayed on the surface of articles for daily use without pressure canning and high-pressure spraying or heating and curing after spraying, thereby realizing waterproof and antifouling effects.
In order to solve the problems in the prior art, the invention provides the following technical scheme:
the waterproof and antifouling spray is characterized by comprising a solvent and the following components in percentage by weight: 3.8-33g/L of hydrophobic agent, 0.3-6g/L of dissolution promoting dispersant and 0.5-2g/L of film forming agent.
The solvent mainly plays roles of dissolving and diluting in the spray, and is volatilized and dried after the spray is carried out; the hydrophobic agent is the most important component in the spray, plays a role in hydrophobic and realizes the waterproof and antifouling effects; the main function of the dissolution promoting dispersant in the spray is to promote the full dissolution and the uniform mixing of all components in the solution to obtain a uniform and stable solution; the main function of the film forming agent in the spray is to promote the spray to form a continuous and uniform film on the solid surface, and the hydrophobic effect of the hydrophobic agent can be better reflected only if the continuous and uniform film is formed.
Preferably, the hydrophobic agent comprises polydimethylsiloxane and stearic acid, the solvent is an ethanol solvent, the dissolution promoting dispersant comprises sodium dodecyl benzene sulfonate, sodium dodecyl sulfate and sodium stearate, and the film forming agent is polyvinyl alcohol.
Preferably, the content of each component is as follows: 1-3g/L of polydimethylsiloxane, 2.8-30g/L of stearic acid, 0.1-2g/L of sodium dodecyl benzene sulfonate, 0.1-2g/L of sodium dodecyl sulfate, 0.1-2g/L of sodium stearate and 0.5-2g/L of polyvinyl alcohol.
Preferably, the waterproof and antifouling spray also comprises 0.1-2g/L KH560 coupling agent and 1-10g/L nano SiO2。
Nano SiO2The main role of the particles is to distribute them in the hydrophobic film to function as a nanoscale rough surface. Hydrophobic components and micro-roughness structure are two important factors influencing the surface hydrophobic property of the solid material. Under the condition of having hydrophobic component, if possess microcosmic coarse structure again, will promote waterproof antifouling effect greatly. Based on the principle, nano SiO is added into the formula2And (3) granules.
Nano SiO2Prior to addition to the solution, it was modified with KH560 coupling agent. Purpose and effect of modification: (1) better dispersing in solution, (2) being evenly distributed in the film layer when forming the film, and (3) increasing the adhesive force between the film and the substrate. KH560 is used by alcoholysis with ethanol.
Preferably, the waterproof and antifouling spray further comprises 100-200g/L deionized water. The ignition point of the spray is greatly reduced by adding the deionized water, the addition amount of the deionized water is reasonably controlled, the use safety of the spray is ensured, and the quick drying after the spray is sprayed is not influenced.
The preparation method of the waterproof and antifouling spray provided by the invention comprises the following steps:
(1) dissolving the hydrophobic agent: measuring an ethanol solvent, adding polydimethylsiloxane and stearic acid into the ethanol solvent, and adding deionized water into the ethanol solvent to obtain a solution A;
(2) adding dissolution promoting dispersant: adding sodium dodecyl benzene sulfonate, sodium dodecyl sulfate and sodium stearate into the solution A to obtain a solution B;
(3) adding a film forming agent: dissolving polyvinyl alcohol, and adding the dissolved polyvinyl alcohol into the solution B to obtain a solution C, namely the waterproof and antifouling spray;
further, in order to obtain a better waterproof and antifouling spray, on the basis of the steps, the following steps are carried out: alcoholysis of KH560 coupling agent with ethanol, and addition of nano SiO2And (3) uniformly stirring the particles, and then adding the particles into the solution C to obtain a solution D, namely the waterproof and antifouling spray with better effect.
The obtained waterproof and antifouling spray comprises the following components in percentage by weight: 1-3g/L of polydimethylsiloxane, 2.8-30g/L of stearic acid, 0.1-2g/L of sodium dodecyl benzene sulfonate, 0.1-2g/L of sodium dodecyl sulfate, 0.1-2g/L of sodium stearate, 0.5-2g/L of polyvinyl alcohol and 100g/L of deionized water.
The waterproof and antifouling spray with better effect comprises the following components: 1-3g/L of polydimethylsiloxane, 2.8-30g/L of stearic acid, 0.1-2g/L of sodium dodecyl benzene sulfonate, 0.1-2g/L of sodium dodecyl sulfate, 0.1-2g/L of sodium stearate, 0.5-2g/L of polyvinyl alcohol, 100g/L of deionized water, 0.1-2g/L of KH560 coupling agent and nano SiO21-10g/L。
Preferably, the polyvinyl alcohol is dissolved by the following method: adding polyvinyl alcohol into water, heating to 80-90 deg.C under stirring, and maintaining the temperature for 60-90min to completely dissolve.
By adopting the technical scheme, the technical effects are as follows:
(1) the formula of the invention does not contain fluorine-containing substances and other harmful volatile organic compounds, thereby being green and environment-friendly;
(2) uniform film formation can be realized without pressurization and injection: the dissolution promoting dispersant is designed in the formula, so that the components can be uniformly mixed and dispersed to obtain uniform and stable solution, and small liquid drops with uniform components can be obtained by using a common spraying device. Meanwhile, the film forming agent is designed in the formula, so that the spraying forms a continuous and uniform film on the solid surface.
(3) Heating and curing are not needed: the ethanol in the formula is used as a solvent to volatilize quickly, and is easy to form a film and solidify. In addition, under the action of the film forming agent, the spray film forming is uniform, the adhesion is firm, and the drying is easy.
(4) The deionized water is added into the formula of the invention, so that the invention is nonflammable and explosive, and is safe to store and transport.
(5) The formula of the invention is also added with nano SiO2And a microscopic coarse structure is formed in the hydrophobic membrane, so that the waterproof and antifouling effects are greatly improved.
Drawings
FIG. 1 is a schematic diagram of the spraying, filming, water and soil repellent spray;
FIG. 2 is a diagram showing the water-repellent effect of the spray obtained in example 3 when sprayed on plain paper;
FIG. 3 is a test chart of the contact angle of a water drop sprayed on plain paper by the spray obtained in example 3.
Detailed Description
The invention will be further described with reference to specific embodiments.
Example 1
The formula is as follows: polydimethylsiloxane: 1g/L, stearic acid: 2.8g/L, sodium dodecylbenzenesulfonate: 0.1g/L, sodium lauryl sulfate: 0.1g/L, sodium stearate: 0.1g/L, polyvinyl alcohol: 0.5g/L, deionized water: 100g/L of ethanol solvent.
The method comprises the following steps:
measuring ethanol, adding stearic acid and polydimethylsiloxane, stirring uniformly, and adding deionized water to obtain a solution A;
adding sodium dodecyl benzene sulfonate, sodium dodecyl sulfate and sodium stearate into the solution A under the condition of stirring to obtain solution B;
adding polyvinyl alcohol into deionized water, heating to 80 ℃ under stirring, keeping the temperature for 60min, weighing the dissolved polyvinyl alcohol according to the amount after the dissolution is finished, adding the polyvinyl alcohol into the solution B, and stirring to obtain a solution C, namely the waterproof and antifouling spray.
Example 2
The formula is as follows: polydimethylsiloxane: 3g/L, stearic acid: 30g/L, sodium dodecylbenzenesulfonate: 2g/L, sodium dodecyl sulfate: 2g/L, sodium stearate: 2g/L, polyvinyl alcohol: 2g/L, deionized water: 200g/L of ethanol solvent.
The method comprises the following steps:
measuring ethanol, adding stearic acid and polydimethylsiloxane, stirring uniformly, and adding deionized water to obtain a solution A;
adding sodium dodecyl benzene sulfonate, sodium dodecyl sulfate and sodium stearate into the solution A under the condition of stirring to obtain solution B;
adding polyvinyl alcohol into deionized water, heating to 90 ℃ under stirring, keeping the temperature for 80min, weighing the dissolved polyvinyl alcohol according to the amount after the dissolution is finished, adding the polyvinyl alcohol into the solution B, and stirring to obtain a solution C, namely the waterproof and antifouling spray.
Example 3
The formula is as follows: polydimethylsiloxane: 2g/L, stearic acid: 20g/L, sodium dodecyl benzene sulfonate: 1g/L, sodium dodecyl sulfate: 1g/L, sodium stearate: 1g/L, polyvinyl alcohol: 1.5g/L, deionized water: 150g/L, nano SiO2: 2 g/L. KH 560: 0.3g/L, ethanol solvent.
The method comprises the following steps:
measuring ethanol, adding stearic acid and polydimethylsiloxane, stirring uniformly, and adding deionized water to obtain a solution A;
adding sodium dodecyl benzene sulfonate, sodium dodecyl sulfate and sodium stearate into the solution A under the condition of stirring to obtain solution B;
adding polyvinyl alcohol into deionized water, heating to 90 ℃ under stirring, preserving heat for 80min, weighing the dissolved polyvinyl alcohol according to the amount after dissolution, adding the polyvinyl alcohol into the solution B, and stirring to obtain a solution C;
alcoholysis of KH560 with ethanol, and addition of SiO nanoparticles2After being stirred and mixed evenly, the modified nano SiO is weighed according to the amount2Adding into the solution C, and stirring to obtain solution D, which is the waterproof and antifouling spray.
When the spray obtained by the embodiment is sprayed on ordinary paper, the waterproof effect is as shown in fig. 2 and 3, and the contact angle is 140 degrees through a contact angle test of a water drop, so that the waterproof and antifouling effects are good.
Claims (9)
1. The waterproof and antifouling spray is characterized by comprising a solvent and the following components in percentage by weight: 3.8-33g/L of hydrophobic agent, 0.3-6g/L of dissolution promoting dispersant and 0.5-2g/L of film forming agent.
2. The spray according to claim 1, wherein the hydrophobic agent comprises polydimethylsiloxane and stearic acid, the solvent is ethanol solvent, the dissolution promoting dispersant comprises sodium dodecyl benzene sulfonate, sodium dodecyl sulfate and sodium stearate, and the film forming agent is polyvinyl alcohol.
3. The waterproof and antifouling spray according to claim 2, wherein the contents of the components are as follows: 1-3g/L of polydimethylsiloxane, 2.8-30g/L of stearic acid, 0.1-2g/L of sodium dodecyl benzene sulfonate, 0.1-2g/L of sodium dodecyl sulfate, 0.1-2g/L of sodium stearate and 0.5-2g/L of polyvinyl alcohol.
4. The water and soil spray according to any one of claims 1 to 3, further comprising 0.1 to 2g/L KH560 coupling agent and 1 to 10g/L nano SiO2。
5. The spray according to claim 4, further comprising 100-200g/L deionized water.
6. A process for the preparation of a water and soil repellent spray according to claim 1 comprising the steps of:
(1) dissolving the hydrophobic agent: measuring a solvent, and adding a hydrophobic agent into the solvent to obtain a solution A;
(2) adding dissolution promoting dispersant: and adding the dissolution promoting dispersant into the solution A to obtain a solution B.
(3) Adding a film forming agent: and dissolving the film forming agent, and adding the dissolved film forming agent into the solution B to obtain the waterproof and antifouling spray.
7. A method of preparing a water and soil repellent spray according to claim 6 comprising the steps of:
the hydrophobic agent is polydimethylsiloxane and stearic acid; the dissolution promoting dispersant is sodium dodecyl benzene sulfonate, sodium dodecyl sulfate and sodium stearate; the film forming agent is polyvinyl alcohol;
(1) dissolving the hydrophobic agent: measuring an ethanol solvent, adding polydimethylsiloxane and stearic acid into the ethanol solvent, and adding deionized water into the ethanol solvent to obtain a solution A;
(2) adding dissolution promoting dispersant: adding sodium dodecyl benzene sulfonate, sodium dodecyl sulfate and sodium stearate into the solution A to obtain a solution B;
(3) adding a film forming agent: dissolving polyvinyl alcohol, and adding the dissolved polyvinyl alcohol into the solution B to obtain a solution C, namely the waterproof and antifouling spray;
the obtained waterproof and antifouling spray comprises the following components in percentage by weight: 1-3g/L of polydimethylsiloxane, 2.8-30g/L of stearic acid, 0.1-2g/L of sodium dodecyl benzene sulfonate, 0.1-2g/L of sodium dodecyl sulfate, 0.1-2g/L of sodium stearate, 0.5-2g/L of polyvinyl alcohol and 100g/L of deionized water.
8. The method for preparing a waterproof and antifouling spray according to claim 7, further comprising the steps of: alcoholysis of KH560 coupling agent with ethanol, and addition of nano SiO2The particles are evenly stirred and then added into the solution C to obtain a solution D, wherein the content of the KH560 coupling agent is 0.1-2g/L, and the nano SiO is2The content of (B) is 1-10 g/L.
9. The method for preparing the spray of claim 7, wherein the polyvinyl alcohol is dissolved by the following method: adding polyvinyl alcohol into water, heating to 80-90 deg.C under stirring, and maintaining the temperature for 60-90min to completely dissolve.
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| CN201911191656.5A CN110746883A (en) | 2019-11-28 | 2019-11-28 | Waterproof and antifouling spray and preparation method thereof |
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Citations (4)
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|---|---|---|---|---|
| US20140272148A1 (en) * | 2013-03-15 | 2014-09-18 | Illinois Tool Works, Inc. | Formulations for applying a hydrophobic film to a substrate |
| CN104261354A (en) * | 2014-09-11 | 2015-01-07 | 武汉海力特科技有限公司 | Sodium percarbonate anti-caking emulsion, and preparation and application method thereof |
| CN103468416B (en) * | 2013-08-21 | 2015-05-20 | 苏州爱立方服饰有限公司 | Aerosol spray for dry cleaning of woolen clothes and preparation method of aerosol spray |
| CN105887491A (en) * | 2016-05-12 | 2016-08-24 | 江南大学 | Super-hydrophobic spraying transparent solution as well as preparation method and application thereof |
-
2019
- 2019-11-28 CN CN201911191656.5A patent/CN110746883A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140272148A1 (en) * | 2013-03-15 | 2014-09-18 | Illinois Tool Works, Inc. | Formulations for applying a hydrophobic film to a substrate |
| CN103468416B (en) * | 2013-08-21 | 2015-05-20 | 苏州爱立方服饰有限公司 | Aerosol spray for dry cleaning of woolen clothes and preparation method of aerosol spray |
| CN104261354A (en) * | 2014-09-11 | 2015-01-07 | 武汉海力特科技有限公司 | Sodium percarbonate anti-caking emulsion, and preparation and application method thereof |
| CN105887491A (en) * | 2016-05-12 | 2016-08-24 | 江南大学 | Super-hydrophobic spraying transparent solution as well as preparation method and application thereof |
Non-Patent Citations (1)
| Title |
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