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CN-121518013-B - Wear-resistant water-based paint and manufacturing method thereof, wear-resistant coating, tool and manufacturing method thereof

CN121518013BCN 121518013 BCN121518013 BCN 121518013BCN-121518013-B

Abstract

The application provides a wear-resistant water-based paint and a manufacturing method thereof, a wear-resistant coating, an appliance and a manufacturing method thereof. The wear-resistant water-based paint provided by the embodiment of the application is a dispersion liquid comprising a core-shell emulsifier, polyaryletherketone resin and an aqueous medium, wherein the core-shell emulsifier comprises inorganic particles and polymer long chains grafted on the surfaces of the inorganic particles and provided with hydrophilic groups and lipophilic chain segments. The core-shell emulsifier in the wear-resistant water-based paint can prevent the aggregation of the polyaryletherketone resin particles through steric hindrance and electrostatic repulsion, ensure the uniform dispersion of the polyaryletherketone resin particles in the water-based medium and form the wear-resistant water-based paint in a stable dispersion state. In addition, the wear-resistant aqueous coating material in a stable dispersion state is not easily affected by temperature, so that defects (such as pore defects) of the wear-resistant coating layer formed by the wear-resistant aqueous coating material can be reduced, and wear resistance and corrosion resistance can be improved.

Inventors

  • QIU BO
  • LI HAIBO
  • Bao Zhuohao
  • SONG YIHENG
  • YIN XIANZE
  • LIU HAITAO

Assignees

  • 武汉苏泊尔炊具有限公司

Dates

Publication Date
20260512
Application Date
20260116

Claims (20)

  1. 1. The wear-resistant water-based paint is characterized by comprising a dispersion liquid of a core-shell emulsifier, polyaryletherketone resin and an aqueous medium, wherein the core-shell emulsifier comprises inorganic particles and polymer long chains grafted on the surfaces of the inorganic particles, the polymer long chains are provided with hydrophilic groups and lipophilic segments, the hydrophilic groups are polyoxyethylene-based sulfonic acid quaternary ammonium salt groups, the size of the inorganic particles is 5nm-100nm, the step of forming the core-shell emulsifier comprises the steps of grafting hydroxyl groups on the surfaces of the inorganic particles, grafting quaternary ammonium salt hydrophilic groups on the hydroxyl groups on the surfaces of the inorganic particles through silanization coupling treatment, and grafting hydrophilic segments on the hydrophilic groups on the surfaces of the inorganic particles through ion exchange, so that the core-shell emulsifier with hydrophilic groups and lipophilic segments is obtained.
  2. 2. The abrasion resistant water-based paint according to claim 1, wherein the polyaryletherketone resin comprises at least one of polyetherketone resin, polyetheretherketone resin and polyetheretherketone ketone resin, and/or the crystallinity of the polyaryletherketone resin is 30 to 40%, and/or the glass transition temperature of the polyaryletherketone resin is in the range of 143 ℃ to 180 ℃, and/or the friction coefficient of the polyaryletherketone resin is 0.2 to 0.25.
  3. 3. The abrasion-resistant aqueous coating according to claim 1, wherein the lipophilic segment grafted on the surface of the inorganic particle is a lipophilic alkyl chain, and/or the HLB value of the core-shell emulsifier is 10 to 18.
  4. 4. The abrasion resistant aqueous coating according to claim 1, wherein the lipophilic segment is a nonylphenol chain or a long alkyl chain, and/or, The hydrophilic group has a molecular weight of 220g/mol to 2200g/mol and the lipophilic segment has a molecular weight of 220g/mol to 400g/mol, and/or, The inorganic particles are selected from one or more of calcium carbonate particles, alumina particles, and titanium dioxide particles.
  5. 5. The abrasion resistant aqueous coating according to claim 1, wherein the mass ratio of the core-shell emulsifier, the polyaryletherketone resin and the aqueous medium in the dispersion is (0.7-1): (25-28): (70.85-73.5).
  6. 6. The abrasion resistant aqueous coating according to claim 1, wherein the dispersion further comprises an inorganic pigment and/or thickener.
  7. 7. The abrasion resistant aqueous coating according to claim 6, wherein in case the dispersion further comprises an inorganic pigment, the mass ratio of the core-shell emulsifier, the polyaryletherketone resin, the aqueous medium and the inorganic pigment is (0.7-1): (25-28): (70.85-73.5): (0.3-0.5), and in case the dispersion further comprises a thickener, the mass ratio of the core-shell emulsifier, the polyaryletherketone resin, the aqueous medium and the thickener is (0.7-1): (25-28): (70.85-73.5): (0.15-0.2).
  8. 8. The abrasion resistant aqueous coating according to claim 6, wherein the inorganic pigment filler is at least one of iron oxide, carbon black, silicon carbide, titanium dioxide and aluminum oxide, and the thickener is at least one of ethylcellulose, hydroxypropyl cellulose, hydroxypropyl methylcellulose and xanthan gum.
  9. 9. The abrasion resistant aqueous coating according to claim 1, wherein the polyaryletherketone resin has a melting point of 305 ℃ to 380 ℃, and/or the polyaryletherketone resin has an intrinsic viscosity of 0.60dL/g to 1.2dL/g, and/or the abrasion resistant aqueous coating has a viscosity of 80 mPa-s to 150 mPa-s.
  10. 10. The wear resistant aqueous coating according to any one of claims 1 to 9, wherein the dispersion further comprises a polysiloxane, and the mass ratio of the core-shell emulsifier, the polyaryletherketone resin, the aqueous medium and the polysiloxane is (0.7-1): 25-28): 70.85-73.5: (0.1-0.5).
  11. 11. A method for producing a wear-resistant aqueous paint, comprising: grafting hydroxyl groups on the surfaces of the inorganic particles; Grafting quaternary ammonium salt hydrophilic groups on the hydroxyl groups of the surface of the inorganic particles through silanization coupling treatment; grafting an oleophylic chain segment on the quaternary ammonium salt hydrophilic group on the surface of the inorganic particle through ion exchange, so as to obtain a core-shell emulsifier with the hydrophilic group-oleophylic chain segment; and mixing a core-shell emulsifier, polyaryletherketone resin and an aqueous medium to form a dispersion liquid, thereby obtaining the wear-resistant aqueous coating, wherein the core-shell emulsifier comprises inorganic particles and polymer long chains grafted on the surfaces of the inorganic particles and provided with hydrophilic groups-lipophilic chain segments, the hydrophilic groups are polyoxyethylene sulfonic acid quaternary ammonium salt groups, and the size of the inorganic particles is 5nm-100nm.
  12. 12. The method of producing a wear resistant aqueous coating material according to claim 11, wherein the step of mixing the core-shell emulsifier, the polyaryletherketone resin and the aqueous medium and forming a dispersion liquid: mixing the core-shell emulsifier and the aqueous medium to form a first mixed solution; mixing the polyaryletherketone resin in the first mixed liquid to form the dispersion liquid.
  13. 13. The method for producing a wear-resistant aqueous coating material according to claim 11, wherein the polyaryletherketone resin has a particle diameter of 20 μm to 120. Mu.m, and/or the polyaryletherketone resin has a hydroxylated modified polyaryletherketone resin.
  14. 14. The method for producing a wear-resistant aqueous paint according to claim 11, wherein the step of grafting a lipophilic segment on the quaternary ammonium salt hydrophilic group of the surface of the inorganic particle by ion exchange comprises: and (3) reacting the inorganic particles grafted with the quaternary ammonium salt hydrophilic groups on the surfaces with sodium nonylphenol polyoxyethylene ether sulfonate.
  15. 15. The wear-resistant coating is characterized by comprising a polyaryletherketone resin layer and particles dispersed in the polyaryletherketone resin layer, wherein the particles comprise a core-shell emulsifier, the core-shell emulsifier comprises inorganic particles and polymer long chains grafted on the surfaces of the inorganic particles, the polymer long chains are provided with hydrophilic groups and lipophilic segments, the hydrophilic groups are polyoxyethylene sulfonic acid quaternary ammonium salt groups, the inorganic particles are 5-100 nm in size, the step of forming the core-shell emulsifier comprises the steps of grafting hydroxyl groups on the surfaces of the inorganic particles, grafting quaternary ammonium salt hydrophilic groups on the hydroxyl groups on the surfaces of the inorganic particles through silanization coupling treatment, and grafting lipophilic segments on the quaternary ammonium salt groups on the surfaces of the inorganic particles through ion exchange, so that the core-shell emulsifier with hydrophilic groups and lipophilic segments is obtained.
  16. 16. The wear resistant coating according to claim 15, characterized in that the wear resistant coating has a porosity of not more than 0.1% and a pore size of not more than 10 μm, and/or the vickers hardness of the wear resistant coating is 35HV-45HV, and/or the friction coefficient of the wear resistant coating is 0.1-0.2, and/or the thickness of the wear resistant coating is 30 μm-200 μm.
  17. 17. The wear-resistant coating according to claim 15, wherein the polyaryletherketone resin layer and the core-shell emulsifier are chemically bonded at a contact interface, and/or the mass of the polyaryletherketone resin layer is 96% -99% of the total mass of the wear-resistant coating, and the balance is the core-shell emulsifier.
  18. 18. The wear resistant coating according to claim 15, wherein the particulate matter further comprises pigment filler particles, the polyaryletherketone resin layer has a mass of 95% -98% of the total mass of the wear resistant coating, the core shell emulsifier has a mass of 1% -4% of the total mass of the wear resistant coating, and the balance is the pigment filler particles.
  19. 19. The wear resistant coating according to claim 15, wherein the lipophilic segments grafted onto the surface of the inorganic particles are lipophilic alkyl chains and/or the core-shell emulsifier has an HLB value of 10-18.
  20. 20. The wear-resistant coating according to claim 15, wherein the lipophilic segments are nonylphenol chains or long alkyl chains, and/or, The hydrophilic group has a molecular weight of 220g/mol to 2200g/mol and the lipophilic segment has a molecular weight of 220g/mol to 400g/mol, and/or, The inorganic particles are selected from one or more of calcium carbonate particles, alumina particles, and titanium dioxide particles.

Description

Wear-resistant water-based paint and manufacturing method thereof, wear-resistant coating, tool and manufacturing method thereof Technical Field The application relates to the technical field of water-based polymer coating, in particular to wear-resistant water-based coating, a manufacturing method thereof, a wear-resistant coating and an appliance. Background The polyaryletherketone resin has excellent high temperature resistance, mechanical strength and chemical stability, so that the polyaryletherketone resin has important value in the aspect of manufacturing wear-resistant coatings. The polyether-ether-ketone resin is taken as a polyaryletherketone resin, is generally taken as a high-performance special engineering plastic, and has relatively high advantages due to the excellent wear resistance. In the prior art, one method is to manufacture the polyetheretherketone resin layer by a compression molding process, but this method lacks economy due to the high manufacturing cost of the mold. The other method is to form a wear-resistant coating by electrostatic spraying of the polyether-ether-ketone resin, but the process can lead to low deposition efficiency of the polyether-ether-ketone resin and serious resin waste. In order to achieve the manufacture of high performance wear resistant coatings with cost control, researchers in the field have begun to explore aqueous coatings for polyetheretherketone resins. However, since polyetheretherketone resins are not themselves compatible with water, their application to aqueous coating systems requires solutions to the dispersion problem. At present, the water-based paint of the polyether-ether-ketone resin mainly depends on a traditional small-molecule emulsifier, and the water-based paint of the polyether-ether-ketone resin with the emulsifier has obvious limitation in the process of forming the wear-resistant coating in storage and construction, and finally, the formed wear-resistant layer is poor in compactness, so that the hardness and strength of the wear-resistant layer are reduced, and the wear resistance of the wear-resistant layer is greatly reduced. Therefore, development of a wear-resistant water-based paint containing polyaryletherketone resin is needed. Disclosure of Invention The application aims to provide a wear-resistant water-based paint, a manufacturing method thereof, a wear-resistant coating and an appliance, so as to solve the technical problem that the wear-resistant coating of the appliance formed by the existing wear-resistant water-based paint is poor in wear resistance due to poor compactness. According to a first aspect of the present application, there is provided a wear-resistant aqueous coating material, wherein the wear-resistant aqueous coating material is a dispersion comprising a core-shell emulsifier, a polyaryletherketone resin and an aqueous medium, the core-shell emulsifier comprising inorganic particles and polymer long chains having hydrophilic groups-lipophilic segments grafted on the surfaces of the inorganic particles. According to the embodiment of the application, the wear-resistant water-based paint can be formed into the wear-resistant water-based paint in a stable dispersion manner due to the core-shell emulsifier. In addition, the wear-resistant water-based paint in a stable dispersion state is not easy to influence the dispersion performance due to temperature, so that defects (such as pore defects) of a wear-resistant coating formed by the wear-resistant water-based paint can be reduced, the hardness and the strength of the wear-resistant coating can be improved, and the wear-resistant performance of the wear-resistant coating can be ensured. According to the present application, the core-shell emulsifier includes inorganic particles and polymer long chains having hydrophilic groups-lipophilic segments grafted on the surfaces of the inorganic particles. The inorganic particles are used as cores, can provide structural support and functional basis, and polymer long chains with hydrophilic groups-lipophilic chain segments are used for dispersing the particles of the polyaryletherketone resin. In the stage of dispersing the particles of the polyaryletherketone resin to form the wear-resistant water-based paint, the inorganic particles can provide huge steric hindrance, and each particle of the polyaryletherketone resin is physically prevented from being close to each other, so that the stability (centrifugal resistance and shearing resistance) of the wear-resistant water-based paint in a dispersed liquid state is greatly enhanced. In addition, in the stage of dispersing to form the wear-resistant water-based paint, the lipophilic chain segments (for example, long chain alkyl chains) can be firmly adsorbed or entangled on the particle surfaces of the hydrophobic polyaryletherketone resin through the principle of 'similar compatibility'. Hydrophilic groups (e.g., polyoxyethylene sulfonic acid quaternary ammonium sal