NL2029518B1 - A Coating for Increasing and Reducing Friction Coefficient and Its Preparation Method and Application - Google Patents

A Coating for Increasing and Reducing Friction Coefficient and Its Preparation Method and Application Download PDF

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Publication number
NL2029518B1
NL2029518B1 NL2029518A NL2029518A NL2029518B1 NL 2029518 B1 NL2029518 B1 NL 2029518B1 NL 2029518 A NL2029518 A NL 2029518A NL 2029518 A NL2029518 A NL 2029518A NL 2029518 B1 NL2029518 B1 NL 2029518B1
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Prior art keywords
parts
coating
friction
friction coating
ethylene glycol
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NL2029518A
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Dutch (nl)
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NL2029518A (en
Inventor
Yang Yong
Zhang Zhufu
Shi Jun
Song Ruitao
Ding Mao
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Shanghai Dacromet Surface Treat Co Ltd
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Publication of NL2029518A publication Critical patent/NL2029518A/en
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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
    • 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
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
    • C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
    • 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
    • C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • 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
    • C09D7/40—Additives
    • C09D7/45—Anti-settling agents
    • 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
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention belongs to the technical field of coatings. The invention provides an anti-friction coating, which reduces the friction performance of the paint film on the premise of ensuring the anti-corrosion performance and hardness of the paint film, and on account of the addition of fluorescent substances, the missing and uneven parts can be distinguished well, and the coating adjustment can be carried out in time to reduce the possibility of corrosion. The invention provides a preparation method of the coating, and the coating can be obtained by simply stirring during the preparation process, with simple operation, low process requirements and saving production cost. The invention also provides the application of the coating in reducing friction of metal devices, which can effectively stabilize the friction coefficient.

Description

A Coating for Increasing and Reducing Friction Coefficient and Its Preparation Method and Application Technical Field The invention relates to the technical field of coatings, in particular to a coating for increasing/ reducing the friction coefficient, and its preparation method and application.
Background Zinc-aluminum coating solution is a coating that uses zinc-aluminum sheet as the main anti-corrosion functional material.
The use of zinc aluminum sheet can protect the cathode of the substrate, and it is currently one of the most important anti-corrosion coatings.
However, since the main components of the coating are zinc-aluminum sheet and cross-linked resin, the friction coefficient of the coating is greater than 0.40, which is high and unstable.
The surface hardness of such a coating is relatively low, so it is easy to leave scratches on the surface of the coating during the assembly process, making the workpiece a defective product.
Content of the invention The invention aims at overcoming the deficiencies in the prior art, provide an anti- friction coating and apply it to reduce the friction of metal devices.
To realize the above aims, the invention provides the following technical solutions: The invention provides an anti-friction coating, which contains the following components by mass: 12 to 17 parts of modified acrylic resin, 68 to 74 parts of water, 6 to 10 parts of alkaline silicate, 2 to 10 parts of PTFE, 1 to 2 parts of ethylene glycol monobutyl ether and 0.5 to 1 part of non-ionic surfactant.
Preferably, the anti-friction coating further contains 1 to 1.5 parts of phosphor.
Preferably, the alkaline silicate is potassium silicate and/or sodium silicate.
Preferably, the non-ionic surfactant is polyoxyethylene ether and/or polyol type surfactant; The polyol type surfactant is one or more of glycerin, pentaerythritol and sorbitol.
The invention also provides a preparation method of the anti-friction coating, which comprises the following steps: (1) Mix the ingredients except water, alkaline silicate and ethylene glycol monobutyl ether to obtain semi-finished products; (2) Add water, alkaline silicate and ethylene glycol monobutyl ether to the semi- finished product, and mix to obtain the anti-friction coating.
Preferably, the mixing speed in the step (1) 1s 300 to 500 rpm, and the mixing time 18 30 to 60 min.
The invention also provides the application of the anti-friction coating in reducing friction of metal devices.
The invention also provides the method for reducing friction of the anti-friction coating, which comprises the following steps: (1) Film-forming the anti-friction coating on the surface of the target part to obtain a coating part; (2) Baking the coating parts to obtain finished parts. Preferably, the drying temperature in the step (2) is 120 to 280° C., and the drying time is 15 to 35 min.
The invention provides an anti-friction coating, which reduces the friction performance of the paint film on the premise of ensuring the anti-corrosion performance and hardness of the paint film, and on account of the addition of fluorescent substances, the missing and uneven parts can be distinguished well, and the coating adjustment can be carried out in time to reduce the possibility of corrosion.
The invention provides a preparation method of the coating, and the coating can be obtained by simply stirring during the preparation process, with simple operation, low process requirements and saving production cost.
The invention also provides the application of the coating in reducing friction of metal devices, which can effectively stabilize the friction coefficient.
Detailed Description of Embodiments The invention provides an anti-friction coating, which contains the following components by mass: 12 to 17 parts of modified acrylic resin, 68 to 74 parts of water, 6 to 10 parts of alkaline silicate, 2 to 10 parts of PTFE, 1 to 2 parts of ethylene glycol monobutyl ether and 0.5 to 1 part of non-ionic surfactant.
In the invention, the amount of the modified acrylic resin is 12 to 17 parts, preferably 13 to 16 parts, and more preferably 14 to 15 parts.
In the invention, the modified acrylic resin and alkaline silicate act together as a film-forming substance to determine the basic properties of the paint film and meet the performance requirements of the coating.
In the invention, the modified acrylic resin is preferably JONCRYL 678 water-based resin and/or Levertex 567 water-based resin.
In the invention, the amount of water is 68 to 74 parts, preferably 69 to 73 parts, and more preferably 70 to 72 parts.
In the invention, the alkaline silicate is 6 to 10 parts, preferably 7 to 9 parts, more preferably 7.5 to 8.5 parts.
In the invention, the alkaline silicate is preferably potassium silicate and/or sodium silicate.
In the invention, the PTFE is 2 to 10 parts, preferably 3 to 9 parts, more preferably 4 to 8 parts.
In the invention, PTFE is used as a lubricant to reduce the intermolecular cohesion ofthe polymer, thereby reducing internal friction and heat generation in the resin.
In the invention, the amount of ethylene glycol monobutyl ether is 1 to 2 parts, preferably 1.2 to 1.8 parts, and more preferably 1.4 to 1.6 parts.
In the invention, ethylene glycol monobutyl ether and water dilute other components to facilitate coating on the substrate.
In the invention, the non-ionic surfactant is 0.5 to 1 part, preferably 0.6 to 0.9 part, turther preferably 0.7 to 0.8 part.
In the invention, the non-ionic surfactant is preferably a polyoxyethylene ether and/or polyol type surfactant; The polyol type surfactant is preferably one or more of glycerin, pentaerythritol and sorbitol.
In the invention, the non-ionic surfactant improves the binding force between the lubricating component and the resin, and between the dry film and the substrate, and prevents the coating from falling off after the film is formed on the surface of the substrate.
In the invention, the anti-friction coating also preferably contains 1 to 1.5 parts of phosphor, further preferably 1.1 to 1.4 parts, and more preferably 1.2 to 1.3 parts.
The phosphor in the invention is spherical particles with a diameter of preferably 15 to 25m, more preferably 18 to 22m. The phosphor used in the invention has good solvent resistance and acid and alkali resistance.
The invention also provides a preparation method of the anti-friction coating, which comprises the following steps: (1) Mix the ingredients except water, alkaline silicate and ethylene glycol monobutyl ether to obtain semi-finished products; (2) Add water, alkaline silicate and ethylene glycol monobutyl ether to the semi- finished product, and mix to obtain the anti-friction coating.
In the invention, the mixing speed in the step (1) is preferably 300 to 500rpm, more preferably 350 to 450rpm; The mixing time is preferably 30 to 60 min, more preferably 40 to 50 min.
The stirring performed in step (1) of the invention facilitates the non-ionic surfactant to be wrapped on the surface of the phosphor and/or PTFE, and then dispersed in the resin; ensure that after drying and curing, the phosphor and/or PTFE can be evenly dispersed in the coating, so that the binding force between the components can reach the best.
The invention also provides the application of the anti-friction coating in reducing friction of metal devices.
The invention also provides the method for reducing friction of the anti-friction coating, which comprises the following steps: (1) Film-forming the anti-friction coating on the surface of the target part to obtain a coating part; (2) Baking the coating parts to obtain finished parts.
In the invention, the film-forming treatment in the step (1) is preferably immersion centrifugation or spraying; the rotation speed of the immersion centrifugation is preferably 200 to 275rpm, further preferably 220 to 260rpm, and more preferably 240 to 250rpm; the time of the immersion centrifugation is preferably 10 to 40s, more preferably 20 to 30s; the spraying pressure is preferably 0.3 to 0.6Mpa, more preferably 0.4 to
0.5Mpa; In the invention, the drying temperature in the step (2) 1s preferably 120 to 280°C, further preferably 160 to 240°C, more preferably 180 to 220°C; the drying time is preferably 15 to 35 minutes, further preferably 20 to 30 minutes, and more preferably 23 to 27 minutes.
The technical solutions provided by the invention are described in detail through the 5 embodiments below, but they should not be deemed as a limitation to the scope of protection of the invention.
Embodiment 1 An anti-friction coating containing the following components by mass: 14 parts of JONCRYL 678 water-based resin, 70 parts of water, 7.5 parts of sodium silicate, 5 parts of PTFE, 1.5 parts of ethylene glycol monobutyl ether, 0.7 parts of polyoxyethylene ether and 1.3 parts of phosphor.
Embodiment 2 An anti-friction coating containing the following components by mass: 15 parts of Levertex 567 water-based resin, 69.5 parts of water, 8 parts of potassium silicate, 4 parts of PTFE, 1.5 parts of ethylene glycol monobutyl ether, 0.8 parts of polyoxyethylene ether, 1.2 parts of phosphor.
Embodiment 3 An anti-friction coating containing the following components by mass: 15 parts of JONCRYL 678 water-based resin, 72 parts of water, 8 parts of sodium silicate, 6 parts of PTFE, 1.6 parts of ethylene glycol monobutyl ether, 0.8 parts of glycerin, 1.4 parts of phosphor.
Embodiment 4 An anti-friction coating containing the following components by mass: 13 parts of Levertex 567 water-based resin, 69 parts of water, 7 parts of potassium silicate, 4 parts of PTFE, 1.3 parts of ethylene glycol monobutyl ether, 0.7 parts of pentaerythritol, 1.2 parts of phosphor.
Comparison Example 1 A coating containing the following components by mass: 13 parts of JONCRYL 678 water-based resin, 68 parts of water, 4 parts of PTFE, 1.3 parts of ethylene glycol monobutyl ether, 0.6 parts of polyoxyethylene ether, 1.2 parts of phosphor.
Comparison Example 2
A coating containing the following components by mass: 15 parts of JONCRYL 678 water-based resin, 72 parts of water, 8.5 parts of sodium silicate, 1.8 parts of ethylene glycol monobutyl ether.
Application Example 1 This Application Example uses the anti-friction coating in Embodiment 1.
Mix the modified acrylic resin, PTFE, non-ionic surfactant and phosphor at 400 rpm for 40 minutes; add the remaining water, alkaline silicate and ethylene glycol monobutyl ether, mix and stir evenly to obtain the anti-friction coating.
Coat the anti-friction coating by immersion centrifugation, the rotation speed of immersion centrifugation is 250 rpm, and the time is 30s to obtain the coating parts. Bake the coating parts at a temperature of 180°C, and obtain finished parts after drying for 25 minutes.
Test the friction coefficient of the finished parts according to ISO16047 "Fastener Fastening Torque-Axial Pre-tightening Force Test". Test the fluorescence effect under the excitation of 365nm ultraviolet light. Record the result in Table 1.
Application Example 2 This Application Example uses the anti-friction coating in Embodiment 2.
This Application Example adopts the same coating preparation method as in Application Example 1, but the process of obtaining the coating part adopts the air spraying process, and the spraying pressure is 0.4Mpa to obtain the coating part, The subsequent drying process and test process are the same as those in Application Example
1. Record test result in Table 1. Application Example 3 This Application Example uses the anti-friction coating in Embodiment 3.
This Application Example adopts the same preparation method and test process as in Application Example 1.
Record test result in Table 1.
Application Example 4 This Application Example uses the anti-friction coating in Embodiment 4. This Application Example adopts the same preparation method and test process as in Application Example 2. Record test result in Table 1. Application Comparison Example 1 This Application Comparison Example adopts the coating of Comparison Example I. This Application Comparison Example adopts the same preparation method and test process as in Application Example 1. Record test result in Table 1. Application Comparison Example 2 This Application Comparison Example adopts the coating of Comparison Example
2. This Application Comparison Example adopts the same preparation method and test process as in Application Example 1. Record test result in Table 1. Table 1 - Test Results Applicati | Applicati Applicati | Applicati | Applicati | Applicati on on on on on on Comparis | Comparis Example | Example | Example | Example on on 1 2 3 4 Example | Example 1 2 Friction % . 0.13 0.15 0.14 0.12 0.19 0.23 coefficient ce effect As can be seen from the above embodiments, the invention provides an anti-friction coating, which effectively stabilizes the applied friction coefficient and protects the substrate from damage caused by excessive or small surface friction; and on account of the addition of fluorescent substances, the missing part can be coated in time to prevent damage to the substrate due to incomplete coating. The said contents are the optimal application method of the invention. It should be pointed out that, as for common technicians in this technical field, they can perform various modifications and supplements without departing from the principles of the invention, and such modifications as well as supplements should also be kept within the protection scope of the invention.

Claims (9)

ConclusiesConclusions 1. Antifrictie-bekleding, met het kenmerk, dat deze de volgende massacomponenten omvat: 12 - 17 delen gemodificeerd acrylhars, 68 - 74 delen water, 6-10 delen alkalisilicaat, 2 -10 delen PTFE, 1 - 2 delen ethyleenglycolmonobutylether en 0,5 - 1 deel niet-ionische surfactant.An anti-friction coating, characterized in that it comprises the following bulk components: 12-17 parts modified acrylic resin, 68-74 parts water, 6-10 parts alkali silicate, 2-10 parts PTFE, 1-2 parts ethylene glycol monobutyl ether and 0, 5 - 1 part non-ionic surfactant. 2. Antifrictie-bekleding volgens conclusie 1, met het kenmerk, dat de antifrictie- bekleding verder 1 - 1,5 delen fosfor omvat.An anti-friction coating according to claim 1, characterized in that the anti-friction coating further comprises 1 - 1.5 parts of phosphorus. 3. Antifrictie-bekleding volgens conclusie 2, met het kenmerk, dat het alkalisilicaat kaliumsilicaat en/of natriumsilicaat is.Anti-friction coating according to claim 2, characterized in that the alkali silicate is potassium silicate and/or sodium silicate. 4. Antifrictie-bekleding volgens één van de conclusies | - 3, met het kenmerk, dat de niet-ionische surfactant polyoxyethyleenether en/of surfactant van het polyol- type is; waarbij de surfactant van het polyol-type één of meer is van glycerine, pentaerytritol en sorbitol.Anti-friction coating according to any one of claims | - 3, characterized in that the non-ionic surfactant is polyoxyethylene ether and/or surfactant of the polyol type; wherein the polyol type surfactant is one or more of glycerin, pentaerythritol and sorbitol. 5. Vervaardigingswerkwijze van antifrictie-bekleding volgens één van de conclusies 1 - 4, met het kenmerk, dat deze de volgende stappen omvat: (1) het mengen van de ingrediënten behalve water, alkalisilicaat en ethyleenglycolmonobutylether voor het verkrijgen van halffabrikaten; (2) het toevoegen van water, alkalisilicaat en ethyleenglycolmonobutylether aan het halffabrikaat, en het mengen voor het verkrijgen van de antifrictie-bekleding.The production method of antifriction coating according to any one of claims 1 to 4, characterized in that it comprises the following steps: (1) mixing the ingredients except water, alkali silicate and ethylene glycol monobutyl ether to obtain semi-finished products; (2) adding water, alkali silicate and ethylene glycol monobutyl ether to the semi-finished product, and mixing to obtain the anti-friction coating. 6. Vervaardigingswerkwijze volgens conclusie 5, met het kenmerk, dat de rotatiesnelheid van het mengen in de stap (1) 300 - 500 omwentelingen per minuut is, en de mengtijd 30 - 60 minuten is.The manufacturing method according to claim 5, characterized in that the rotational speed of mixing in the step (1) is 300-500 revolutions per minute, and the mixing time is 30-60 minutes. 7. Toepassing van de antifrictie-bekleding volgens één van de conclusies 1 - 4 bij het reduceren van de frictie van metalen inrichtingen.Use of the anti-friction coating according to any one of claims 1 to 4 in reducing the friction of metal devices. 8. Werkwijze voor het reduceren van frictie door gebruik te maken van de antifrictie-bekleding volgens één van de conclusies | - 4, met het kenmerk, dat deze de volgende stappen omvat: (1) het film-vormen van de antifrictie-bekleding op het oppervlak van het doelgedeelte voor het verkrijgen van een bekledingsgedeelte; (2) het bakken van de bekledingsgedeelten voor het verkrijgen van gerede gedeelten.Method for reducing friction by using the anti-friction coating according to any one of claims | 4, characterized in that it comprises the steps of: (1) filming the anti-friction coating on the surface of the target portion to obtain a coating portion; (2) baking the coating portions to obtain finished portions. 9. Werkwijze volgens conclusie 8, met het kenmerk, dat de droogtemperatuur in de stap (2) 120 - 280°C is, en de droogtijd 15 - 35 minuten is.A method according to claim 8, characterized in that the drying temperature in the step (2) is 120-280°C, and the drying time is 15-35 minutes.
NL2029518A 2021-10-26 2021-10-26 A Coating for Increasing and Reducing Friction Coefficient and Its Preparation Method and Application NL2029518B1 (en)

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