CN113789118A - Preparation method of cyanate ester wear-resistant self-lubricating swash plate - Google Patents
Preparation method of cyanate ester wear-resistant self-lubricating swash plate Download PDFInfo
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Abstract
The invention discloses a preparation method of a wear-resistant self-lubricating swash plate based on cyanate ester, which comprises the following steps: the preparation method comprises the steps of preparation of a catalyst, preparation of a graphene oxide/cyanate ester composite material, preparation of a wear-resistant self-lubricating coating, spraying, curing and fine machining. The invention relates to a preparation method of a cyanate abrasion-resistant self-lubricating swash plate, which adopts a catalyst prepared from reverse ester methyl tin mercaptide aqueous solution and fatty acid mercaptoethanol ester, combines a graphene oxide/cyanate composite material prepared from cyanate ester monomer, epoxy resin monomer and hyperbranched polysiloxane modified graphene oxide, mixes a solid lubricant and an ionic surface treating agent, and sprays the mixture on the surface of a swash plate metal substrate subjected to plasma surface treatment, so that the self-lubricating property and the abrasion resistance of the swash plate are greatly improved.
Description
Technical Field
The invention relates to the technical field of a preparation method of an automobile air-conditioning compressor swash plate, in particular to a preparation method of a cyanate ester wear-resistant self-lubricating swash plate.
Background
The swash plate type air conditioner compressor has the working principle that the swash plate fixed on the rotating shaft in an inclined mode rotates to push the piston of the compressor to reciprocate, and therefore the refrigerant is sucked, compressed and discharged. It is the relative sliding of the piston shoes on the swash plate that translates the rotary motion of the swash plate into reciprocating motion of the pistons. The rotating speed of the swash plate can control the reciprocating frequency of the pistons, the angle between the swash plate and the main shaft can be adjusted, and the reciprocating stroke of the pistons is controlled by the inclination angle of the swash plate. The performance of the swash plate directly determines the life of the compressor and is therefore a very critical component of a swash plate type air conditioning compressor.
The sliding of the swash plate is characterized in that, at the initial stage of the compressor operation, before the lubricating oil reaches, the gaseous refrigerant reaches the respective portions of the swash plate and the shoe, and washes out the lubricating oil accumulated on the sliding surfaces. Therefore, immediately after the start of the compressor, the swash plate and the shoe 3 are relatively slid under the dry friction condition without the lubricating oil.
After the gaseous refrigerant begins to form an oil mist with the lubricating oil and reaches the surface of the swash plate, the swash plate still needs to operate under high speed and high load (the rotating speed and the load are constantly changed), and the swash plate and the slipper plate of the compressor are in an unlubricated or insufficient lubrication state. Therefore, the operating conditions of the swash plate are very severe, and the swash plate operating under such conditions must have wear-resistant, seizure-resistant and self-lubricating properties, and thus the swash plate is required to have good wear-resistant and seizure-resistant properties in both the non-lubricating state (dry friction) and the lubricating state.
The swash plate is composed of a substrate and a wear-resistant coating, wherein a high polymer layer with the thickness of 20-30 microns is deposited on the steel or aluminum substrate, and the high polymer layer is a wear-resistant coating which is composed of molybdenum disulfide, graphite, PTFE, basic resin and a part of reinforcing materials and is also called a sliding contact layer. The performance of the swash plate is directly determined by the preparation and material selection of the swash plate, and comprises the wear resistance, heat resistance and self-lubrication of the swash plate. The base resin plays a role of adhesion in the wear-resistant coating layer, and the heat resistance thereof is lower than that of other components due to inherent defects of the resin material, so that the base resin constituting the swash plate is required to have good heat resistance in addition to excellent adhesion and wear resistance. The existing swash plate has certain defects in the aspects of self-lubricating property, heat resistance, wear resistance and adhesion.
Disclosure of Invention
The invention aims to provide a preparation method of a cyanate abrasion-resistant self-lubricating swash plate, which adopts a specially-prepared graphene oxide/cyanate composite material and combines a solid lubricant and a surfactant, so that the prepared swash plate has excellent heat resistance and abrasion resistance and has excellent self-lubricating property.
In order to solve the technical problem, the invention aims to realize that:
the invention relates to a preparation method of a cyanate ester wear-resistant self-lubricating swash plate, which comprises the following steps:
(1) preparation of the catalyst: adding an inverse ester type methyl tin mercaptide aqueous solution and fatty acid mercaptoethanol ester, slowly and uniformly dropwise adding ammonia water or sodium hydroxide aqueous solution under stirring until the pH value is 7.5-8, the reaction temperature is 40-45 ℃, the reaction time is 3-3.5 hours, standing and layering, separating out an upper-layer aqueous solution, and washing and dehydrating a lower-layer oil phase to obtain a fatty acid mercaptoethanol ester-inverse ester type methyl tin liquid product;
(2) preparing a graphene oxide/cyanate ester composite material: mixing a cyanate monomer with an epoxy resin monomer, performing ultrasonic dispersion for 1-2 hours under the power of 50-60w, adding the accelerator prepared in the previous step and a fatty acid metal salt, and uniformly stirring; heating and reacting at the temperature of 120-;
wherein, the cyanate monomer accounts for 100 parts by mass, the epoxy resin monomer accounts for 10-15 parts by mass, the accelerant accounts for 0.2-0.5 part by mass, and the hyperbranched polysiloxane modified graphene oxide accounts for 3-5 parts by mass; the cyanate monomer is bisphenol A type cyanate resin monomer;
(3) preparing a wear-resistant self-lubricating coating: dissolving the graphene oxide/cyanate composite material, the heteronaphthalene biphenyl polyether sulfone and the heteronaphthalene biphenyl polyether sulfone ketone prepared in the last step in a solvent to form a solution with the concentration of 35-40%, wherein the solvent is N-methyl pyrrolidone or dimethylacetamide; adding polytetrafluoroethylene, polyvinylidene fluoride or ethylene tetrafluoroethylene, stirring uniformly, and then adding graphene oxide functionalized by p-phenylenediamine and nano aluminum oxide; after stirring uniformly, WS is added2/MoS2Uniformly mixing a solid lubricant, a cationic surfactant and a nonionic surfactant to obtain the wear-resistant self-lubricating coating;
(4) spraying: firstly, carrying out plasma surface treatment on a metal substrate of the swash plate, preheating at the temperature of 100-120 ℃, and then spraying a wear-resistant coating solution on two sides of a base plate of the swash plate; the spraying amount of the solution is 10-15g, and the spraying time is 2-3 s;
(5) and (3) curing: heating to 200 ℃, preserving heat for 3 hours, fully volatilizing the solvent, heating to 380 ℃, preserving heat for 1 hour, and naturally cooling to room temperature to form a self-lubricating wear-resistant coating;
(6) finish machining: and (3) performing finish machining on the self-lubricating coating formed on the metal substrate of the swash plate, wherein the thickness is controlled to be 0.01-0.05 mm.
On the basis of the above scheme and as a preferable scheme of the scheme: the reverse ester type methyl tin mercaptide is reverse ester type methyl tin mercaptide containing a sulfur bridge; the concentration of the ammonia water is 15% -20%, and the concentration of the sodium hydroxide is 20% -25%.
On the basis of the above scheme and as a preferable scheme of the scheme: the fatty acid metal salt is alkali metal or alkaline earth metal salt of dicarboxylic acid with 6-12 carbon atoms.
On the basis of the above scheme and as a preferable scheme of the scheme: the alkali metal in the alkali metal dicarboxylate is lithium, sodium or potassium, and the alkali metal in the alkaline earth metal salt is calcium or magnesium.
On the basis of the above scheme and as a preferable scheme of the scheme: in the step (3), the graphene oxide/cyanate ester composite material, the phthalazinone polyethersulfone and the phthalazinone polyethersulfoneketone are prepared according to the weight ratio of 10: 1: 1 in a ratio of 1.
On the basis of the above scheme and as a preferable scheme of the scheme: the mass percentage of the polytetrafluoroethylene, the polyvinylidene fluoride or the ethylene tetrafluoroethylene in the solvent is 3-5%, the mass percentage of the p-phenylenediamine functionalized graphene oxide and the nano aluminum oxide in the solvent is 1-3%, and the WS is2/MoS2The solid lubricant, the cationic surfactant and the nonionic surfactant respectively account for 1-2%, 0.5-1% and 0.3-0.5% of the solvent.
The invention has the beneficial effects that: the invention relates to a preparation method of a cyanate abrasion-resistant self-lubricating swash plate, which adopts a catalyst prepared from reverse ester methyl tin mercaptide aqueous solution and fatty acid mercaptoethanol ester, combines a graphene oxide/cyanate composite material prepared from cyanate ester monomer, epoxy resin monomer and hyperbranched polysiloxane modified graphene oxide, mixes a solid lubricant and an ionic surface treating agent, and sprays the mixture on the surface of a swash plate metal substrate subjected to plasma surface treatment, so that the self-lubricating property and the abrasion resistance of the swash plate are greatly improved.
Detailed Description
The present invention is further illustrated by the following specific examples.
Example one
The preparation method of the cyanate ester wear-resistant self-lubricating swash plate related to the embodiment comprises the following steps:
(1) preparation of the catalyst: adding reverse ester type methyl tin mercaptide aqueous solution and fatty acid mercaptoethanol ester, slowly and uniformly dropwise adding ammonia water or sodium hydroxide aqueous solution under stirring until the pH value is 7.5, the reaction temperature is 40 ℃, the reaction time is 3 hours, standing and layering, separating out upper-layer aqueous solution, and washing and dehydrating lower-layer oil phase to obtain the fatty acid mercaptoethanol ester-reverse ester type methyl tin liquid product.
Further, the reverse ester type methyl tin mercaptide is reverse ester type methyl tin mercaptide containing a sulfur bridge; the concentration of the ammonia water is 15 percent, and the concentration of the sodium hydroxide is 20 percent.
(2) Preparing a graphene oxide/cyanate ester composite material: mixing a cyanate monomer with an epoxy resin monomer, performing ultrasonic dispersion for 2 hours at the power of 50w, adding the accelerator prepared in the previous step and a fatty acid metal salt, and uniformly stirring; and heating and reacting for 30min at 120 ℃, then adding hyperbranched polysiloxane modified graphene oxide, uniformly stirring, polymerizing for 30min at 100 ℃, and naturally cooling to obtain a solid, namely the graphene oxide/cyanate ester composite material.
Wherein the cyanate ester monomer is 100 parts by mass, the epoxy resin monomer is 10 parts by mass, the accelerator is 0.2 part by mass, and the hyperbranched polysiloxane modified graphene oxide is 3 parts by mass; the cyanate monomer is bisphenol A type cyanate resin monomer.
Further, the fatty acid metal salt is an alkali metal or alkaline earth metal salt of a dicarboxylic acid having 6 to 12 carbon atoms.
Further, the alkali metal in the alkali metal dicarboxylate is lithium, sodium or potassium, and the alkali metal in the alkaline earth metal salt is calcium or magnesium.
(3) Preparing a wear-resistant self-lubricating coating: dissolving the graphene oxide/cyanate composite material, the heteronaphthalene biphenyl polyether sulfone and the heteronaphthalene biphenyl polyether sulfone ketone prepared in the last step in a solvent to form a solution with the concentration of 35-40%, wherein the solvent is N-methyl pyrrolidone or dimethylacetamide; the graphene oxide/cyanate composite material, the heteronaphthalene biphenyl polyether sulfone and the heteronaphthalene biphenyl polyether sulfone ketone are prepared according to the following steps of 10: 1: 1 in a ratio of 1.
Adding polytetrafluoroethylene, polyvinylidene fluoride or ethylene tetrafluoroethylene, stirring uniformly, and then adding graphene oxide functionalized by p-phenylenediamine and nano aluminum oxide; after stirring uniformly, WS is added2/MoS2And uniformly mixing the solid lubricant, the cationic surfactant and the nonionic surfactant to obtain the wear-resistant self-lubricating coating.
The cationic surfactant used was cetyltrimethylammonium bromide and the nonionic surfactant used was a polyoxyethylene alkylphenol ether. The mixing of the two can make WS2/MoS2The solid lubricant is subjected to hydrophilic treatment, so that the solid lubricant has good dispersing performance, and alkyl groups attached to the surface of the solid lubricant play a role in inhibiting the deposition process of solid lubricant particles, so that the solid lubricant has good uniformity during coating.
In the preparation of the wear-resistant self-lubricating coating, the graphene oxide functionalized by p-phenylenediamine is adopted, and can be well dissolved in a solvent. The added p-phenylenediamine introduces a rigid structure of a benzene ring, so that the mechanical property and the heat resistance of the base resin can be obviously improved, and the dielectric loss of the base resin can be reduced. According to the invention, the graphene oxide/cyanate ester modified epoxy resin is utilized, so that the adhesiveness and heat resistance of the basic resin are not reduced, and the swash plate obtained on the basis of the basic resin is excellent in heat resistance and wear resistance. The base resin prepared by the invention can be dissolved in an acetone conventional solvent to prepare a copolymer solution, then is mixed with the rest components, and then is sprayed to the two sides of the substrate; the polymer used has good compatibility with other components, and the other components can be uniformly dispersed in the polymer, which is important for the swash plate, because the wear-resistant coating of the swash plate is very thin, if the compatibility of each component forming the coating is poor, the coating on the surface of the substrate is unevenly distributed, the defects are many, and the stability and the service life of the swash plate are seriously influenced.
The mass percentage of the polytetrafluoroethylene, the polyvinylidene fluoride or the ethylene tetrafluoroethylene in the solvent is 3 percent, the mass percentage of the p-phenylenediamine functionalized graphene oxide and the nano aluminum oxide in the solvent is 1 percent, and the WS is2/MoS2The solid lubricant, cationic surfactant and nonionic surfactant each account for 1%, 0.5% and 0.3% of the solvent.
(4) Spraying: firstly, carrying out plasma surface treatment on a metal substrate of the swash plate, preheating at 100 ℃, and then spraying wear-resistant coating solution on two sides of a base plate of the swash plate; the amount of the solution sprayed was 10g, and the spraying time was 2 seconds.
(5) And (3) curing: heating to 200 ℃, preserving heat for 3 hours, fully volatilizing the solvent, heating to 380 ℃, preserving heat for 1 hour, and naturally cooling to room temperature to form the self-lubricating wear-resistant coating.
(6) Finish machining: and (3) performing finish machining on the self-lubricating coating formed on the metal substrate of the swash plate, wherein the thickness is controlled to be 0.01 mm.
Example two
The preparation method of the cyanate ester wear-resistant self-lubricating swash plate related to the embodiment comprises the following steps:
(1) preparation of the catalyst: adding reverse ester type methyl tin mercaptide aqueous solution and fatty acid mercaptoethanol ester, slowly and uniformly dropwise adding ammonia water or sodium hydroxide aqueous solution under stirring until the pH value is 8, the reaction temperature is 45 ℃, the reaction time is 3.5 hours, standing and layering, separating out upper-layer aqueous solution, and washing and dehydrating lower-layer oil phase to obtain the fatty acid mercaptoethanol ester-reverse ester type methyl tin liquid product.
Further, the reverse ester type methyl tin mercaptide is reverse ester type methyl tin mercaptide containing a sulfur bridge; the concentration of the ammonia water is 15% -20%, and the concentration of the sodium hydroxide is 20% -25%.
(2) Preparing a graphene oxide/cyanate ester composite material: mixing a cyanate monomer with an epoxy resin monomer, performing ultrasonic dispersion for 1 hour at the power of 60w, adding the accelerator prepared in the previous step and a fatty acid metal salt, and uniformly stirring; and heating and reacting for 45min at 150 ℃, then adding hyperbranched polysiloxane modified graphene oxide, uniformly stirring, polymerizing for 45min at 120 ℃, and naturally cooling to obtain a solid, namely the graphene oxide/cyanate ester composite material.
Wherein the cyanate ester monomer is 100 parts by mass, the epoxy resin monomer is 15 parts by mass, the accelerator is 0.5 part by mass, and the hyperbranched polysiloxane modified graphene oxide is 5 parts by mass; the cyanate monomer is bisphenol A type cyanate resin monomer.
Further, the fatty acid metal salt is an alkali metal or alkaline earth metal salt of a dicarboxylic acid having 6 to 12 carbon atoms.
Further, the alkali metal in the alkali metal dicarboxylate is lithium, sodium or potassium, and the alkali metal in the alkaline earth metal salt is calcium or magnesium.
(3) Preparing a wear-resistant self-lubricating coating: dissolving the graphene oxide/cyanate composite material, the heteronaphthalene biphenyl polyether sulfone and the heteronaphthalene biphenyl polyether sulfone ketone prepared in the last step in a solvent to form a solution with the concentration of 40%, wherein the solvent is N-methyl pyrrolidone or dimethyl acetamide; the graphene oxide/cyanate composite material, the heteronaphthalene biphenyl polyether sulfone and the heteronaphthalene biphenyl polyether sulfone ketone are prepared according to the following steps of 10: 1: 1 in a ratio of 1.
Adding polytetrafluoroethylene, polyvinylidene fluoride or ethylene tetrafluoroethylene, stirring uniformly, and then adding graphene oxide functionalized by p-phenylenediamine and nano aluminum oxide; after stirring uniformly, WS is added2/MoS2And uniformly mixing the solid lubricant, the cationic surfactant and the nonionic surfactant to obtain the wear-resistant self-lubricating coating.
The mass percentage of the polytetrafluoroethylene, the polyvinylidene fluoride or the ethylene tetrafluoroethylene in the solvent is 5 percent, the mass percentage of the p-phenylenediamine functionalized graphene oxide and the nano aluminum oxide in the solvent is 3 percent, and the WS is2/MoS2The solid lubricant, the cationic surfactant and the nonionic surfactant each account for 2%, 0.5-1% and 0.3-0.5% of the solvent.
(4) Spraying: firstly, carrying out plasma surface treatment on a metal substrate of the swash plate, preheating at 120 ℃, and then spraying wear-resistant coating solution on two sides of a base plate of the swash plate; the amount of the solution sprayed was 15g, and the spraying time was 3 seconds.
(5) And (3) curing: heating to 200 ℃, preserving heat for 3 hours, fully volatilizing the solvent, heating to 380 ℃, preserving heat for 1 hour, and naturally cooling to room temperature to form the self-lubricating wear-resistant coating.
(6) Finish machining: and (3) performing finish machining on the self-lubricating coating formed on the metal substrate of the swash plate, wherein the thickness is controlled to be 0.01 mm.
Comparative example 1
A cyanate-based swashplate, the preparation of which comprises the steps of:
(1) preparation of the catalyst: dissolving methyltin chloride and mercaptoethylamine in ethanol, and reacting at 60 ℃ for 3 hours; then heating to reflux temperature, and reacting for 2 hours; finally, the solvent was removed under reduced pressure to obtain a colorless transparent liquid as a catalyst. The molar ratio of the methyltin chloride to the mercaptoethylamine was 1: 3. The catalyst slowly catalyzes the polymerization of cyanate and epoxy at the prepolymerization temperature of 100 ℃; when the temperature is raised to above 150 ℃, the resin is rapidly catalyzed to cure.
(2) Preparing a copolymer, namely adding 1000g of bisphenol A cyanate monomer, 0.25g of catalyst and 105g of bisphenol A epoxy resin monomer into a beaker at 100 ℃, reacting for 30 minutes, pouring liquid into a tray, and naturally cooling to obtain a solid, namely the cyanate/epoxy resin copolymer;
(3) preparing a wear-resistant coating: dissolving a cyanate/epoxy resin copolymer in acetone to obtain a copolymer acetone solution with the mass concentration of 38%; then uniformly mixing PTFE, molybdenum disulfide, graphite fluoride and reinforcing material nano aluminum oxide to obtain a solid lubricant; finally, uniformly mixing the copolymer acetone solution with the solid lubricant to obtain a wear-resistant coating solution; the mass ratio of each component is as follows: the mass ratio of each component is as follows: 40 parts of cyanate/epoxy resin copolymer, 20 parts of PTFE, 18 parts of molybdenum disulfide, 8 parts of graphite fluoride and 6 parts of reinforcing material nano aluminum oxide.
(4) Spraying and curing are carried out as in the first embodiment. And adopting fine processing to ensure that the thickness of the wear-resistant coating is 0.01 mm.
Comparative example No. two
(1) Preparation of the catalyst: dissolving methyltin chloride and mercaptoethylamine in ethanol, and reacting at 60 ℃ for 3 hours; then heating to reflux temperature, and reacting for 2 hours; finally, the solvent was removed under reduced pressure to obtain a colorless transparent liquid as a catalyst. The molar ratio of the methyltin chloride to the mercaptoethylamine was 1: 3. The catalyst slowly catalyzes the polymerization of cyanate and epoxy at the prepolymerization temperature of 100 ℃; when the temperature is raised to above 150 ℃, the resin is rapidly catalyzed to cure.
(2) Preparing a copolymer, namely adding 1000g of bisphenol A cyanate monomer, 0.1g of catalyst and 50g of bisphenol A epoxy resin monomer into a beaker at 100 ℃, reacting for 30 minutes, pouring liquid into a tray, and naturally cooling to obtain a solid, namely the cyanate/epoxy resin copolymer;
(3) preparing a wear-resistant coating: dissolving a cyanate/epoxy resin copolymer in acetone to obtain a copolymer acetone solution with the mass concentration of 35%; then uniformly mixing PTFE, molybdenum disulfide, graphite fluoride and reinforcing material nano aluminum oxide to obtain a solid lubricant; and finally, uniformly mixing the copolymer acetone solution with the solid lubricant to obtain the wear-resistant coating solution. The mass ratio of each component is as follows: 55 parts of cyanate/epoxy resin copolymer, 40 parts of PTFE, 20 parts of molybdenum disulfide, 8 parts of graphite fluoride and 7 parts of reinforcing material nano aluminum oxide.
(4) Spraying and curing are carried out as in the first embodiment. And adopting fine processing to ensure that the thickness of the wear-resistant coating is 0.01 mm.
The polymer layers on the swash plates prepared in the first and second examples and the first and second comparative examples were scraped off, and a thermogravimetric property test was performed: taking the temperature when the thermal weight loss is 5% as an initial decomposition temperature, and investigating the heat resistance of each wear-resistant coating layer; the adhesion of the wear-resistant coating layers was examined according to the test of GB1720 for the adhesion of the wear-resistant coatings of the above examples and comparative examples; the following table shows that the wear-resistant coating disclosed by the invention is reasonable in composition and excellent in heat resistance and adhesion.
And (3) carrying out anti-blocking test on the swash plate under dry friction and oil injection conditions:
dry friction test:
the test time is 40 minutes, the room temperature is started, and the test is required to be smooth and free of abrasion; testing machine: three pin/disc jam testers; pressure: 5 Mpa; rotating speed: 800 rpm; a sliding state: refrigerant gas (none); sample size: the outer diameter is 96mm, and the inner diameter is 64 mm.
And (3) oil injection test:
the test time is 100 hours, and the test is started at room temperature and is required to be smooth and have no abrasion; testing machine: three pin/disc jam testers; pressure: 5 Mpa; rotating speed: 4500 rpm; a sliding state: spraying oil mist and refrigerating gas (none); sample size: the outer diameter is 96mm, and the inner diameter is 64 mm.
And (3) carrying out anti-occlusion test on the wear-resistant coating layer of the swash plate:
in a dry state or an oil state, a swash plate is fixed, three planes of half steel balls with the diameter of 12mm are used as a grinding piece to slide on the swash plate, the load between the grinding piece and the swash plate is 5N/mm2, the relative movement speed of the grinding piece and the swash plate is 3.35m/s or 8.8m/s, friction is carried out, the coating of the swash plate is tested to be polished, the recorded time is occlusion time, and the larger the time is, the better the friction resistance of the swash plate is. The results of the abrasion resistance test and the bite time results are shown in the following table.
The data from the above table shows that comparative example one and comparative example two have a greater amount of wear for close bite times in the dry rub test. And in the oil injection test, the same comparative effect is also achieved. It can be seen that the swash plate prepared by the preparation method has excellent wear resistance, and the friction performance of the swash plate in a dry state or an oil state is far superior to that of the swash plate prepared by the prior art.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. The preparation method of the cyanate ester wear-resistant self-lubricating swash plate is characterized by comprising the following steps of:
(1) preparation of the catalyst: adding an inverse ester type methyl tin mercaptide aqueous solution and fatty acid mercaptoethanol ester, slowly and uniformly dropwise adding ammonia water or sodium hydroxide aqueous solution under stirring until the pH value is 7.5-8, the reaction temperature is 40-45 ℃, the reaction time is 3-3.5 hours, standing and layering, separating out an upper-layer aqueous solution, and washing and dehydrating a lower-layer oil phase to obtain a fatty acid mercaptoethanol ester-inverse ester type methyl tin liquid product;
(2) preparing a graphene oxide/cyanate ester composite material: mixing a cyanate monomer with an epoxy resin monomer, performing ultrasonic dispersion for 1-2 hours under the power of 50-60w, adding the accelerator prepared in the previous step and a fatty acid metal salt, and uniformly stirring; heating and reacting at the temperature of 120-;
wherein, the cyanate monomer accounts for 100 parts by mass, the epoxy resin monomer accounts for 10-15 parts by mass, the accelerant accounts for 0.2-0.5 part by mass, and the hyperbranched polysiloxane modified graphene oxide accounts for 3-5 parts by mass; the cyanate monomer is bisphenol A type cyanate resin monomer;
(3) preparing a wear-resistant self-lubricating coating: dissolving the graphene oxide/cyanate composite material, the heteronaphthalene biphenyl polyether sulfone and the heteronaphthalene biphenyl polyether sulfone ketone prepared in the last step in a solvent to form a solution with the concentration of 35-40%, wherein the solvent is N-methyl pyrrolidone or dimethylacetamide; adding polytetrafluoroethylene, polyvinylidene fluoride or ethylene tetrafluoroethylene, stirring uniformly, and then adding graphene oxide functionalized by p-phenylenediamine and nano aluminum oxide; after stirring uniformly, WS is added2/MoS2Uniformly mixing a solid lubricant, a cationic surfactant and a nonionic surfactant to obtain the wear-resistant self-lubricating coating;
(4) spraying: firstly, carrying out plasma surface treatment on a metal substrate of the swash plate, preheating at the temperature of 100-120 ℃, and then spraying a wear-resistant coating solution on two sides of a base plate of the swash plate; the spraying amount of the solution is 10-15g, and the spraying time is 2-3 s;
(5) and (3) curing: heating to 200 ℃, preserving heat for 3 hours, fully volatilizing the solvent, heating to 380 ℃, preserving heat for 1 hour, and naturally cooling to room temperature to form a self-lubricating wear-resistant coating;
(6) finish machining: and (3) performing finish machining on the self-lubricating coating formed on the metal substrate of the swash plate, wherein the thickness is controlled to be 0.01-0.05 mm.
2. The preparation method of the cyanate ester wear-resistant self-lubricating swash plate according to claim 1, wherein the reverse ester type methyl tin mercaptide is a sulfur bridge-containing reverse ester type methyl tin mercaptide; the concentration of the ammonia water is 15% -20%, and the concentration of the sodium hydroxide is 20% -25%.
3. The method for preparing the cyanate ester wear-resistant self-lubricating swash plate according to claim 1, wherein the fatty acid metal salt is an alkali metal or alkaline earth metal salt of dicarboxylic acid with 6-12 carbon atoms.
4. The method for preparing the cyanate ester wear-resistant self-lubricating swash plate according to claim 3, wherein the alkali metal in the alkali metal dicarboxylate is lithium, sodium or potassium, and the alkali metal in the alkaline earth metal salt is calcium or magnesium.
5. The preparation method of the cyanate ester wear-resistant self-lubricating swash plate according to claim 1, wherein in the step (3), the graphene oxide/cyanate ester composite material, the phthalazinone polyether sulfone, and the phthalazinone polyether sulfone ketone are mixed according to a ratio of 10: 1: 1 in a ratio of 1.
6. The preparation method of the cyanate ester wear-resistant self-lubricating swash plate according to claim 1, wherein the mass percentage of the polytetrafluoroethylene, the polyvinylidene fluoride or the ethylene tetrafluoroethylene in the solvent is 3-5%, the mass percentage of the p-phenylenediamine functionalized graphene oxide and the nano aluminum oxide in the solvent is 1-3%, and the WS is2/MoS2The solid lubricant, the cationic surfactant and the nonionic surfactant respectively account for 1-2%, 0.5-1% and 0.3-0.5% of the solvent.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116135358A (en) * | 2023-03-13 | 2023-05-19 | 山东普瑞而机械制造有限公司 | Warm extrusion manufacturing method of gear |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775786A (en) * | 2012-08-09 | 2012-11-14 | 西北工业大学 | Graphene oxide/cyanate ester composite material and preparation method thereof |
| CN103304960A (en) * | 2013-05-23 | 2013-09-18 | 厦门大学 | Preparation method of co-continuous POSS (Polyhedral Oligomeric Silsesquioxane)-epoxy modified resin |
| CN110283528A (en) * | 2019-06-27 | 2019-09-27 | 浙江儒商科技有限公司 | A kind of preparation method of the wear-resistant self-lubricating swash plate based on bismaleimide |
| CN110283527A (en) * | 2019-06-27 | 2019-09-27 | 浙江儒商科技有限公司 | A kind of preparation method of the wear-resistant self-lubricating swash plate based on cyanate |
| EP3858957A1 (en) * | 2020-02-03 | 2021-08-04 | Klüber Lubrication München SE & Co. KG | Tribological system |
-
2021
- 2021-08-25 CN CN202110978821.2A patent/CN113789118A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775786A (en) * | 2012-08-09 | 2012-11-14 | 西北工业大学 | Graphene oxide/cyanate ester composite material and preparation method thereof |
| CN103304960A (en) * | 2013-05-23 | 2013-09-18 | 厦门大学 | Preparation method of co-continuous POSS (Polyhedral Oligomeric Silsesquioxane)-epoxy modified resin |
| CN110283528A (en) * | 2019-06-27 | 2019-09-27 | 浙江儒商科技有限公司 | A kind of preparation method of the wear-resistant self-lubricating swash plate based on bismaleimide |
| CN110283527A (en) * | 2019-06-27 | 2019-09-27 | 浙江儒商科技有限公司 | A kind of preparation method of the wear-resistant self-lubricating swash plate based on cyanate |
| EP3858957A1 (en) * | 2020-02-03 | 2021-08-04 | Klüber Lubrication München SE & Co. KG | Tribological system |
Non-Patent Citations (2)
| Title |
|---|
| 徐亚娟等: "PPESK改性环氧树脂基体及其单向复合材料的制备与性能研究", 《化工新型材料》 * |
| 陈树: "逆酯型硫醇甲基锡的合成技术与发展", 《新材料与新技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116135358A (en) * | 2023-03-13 | 2023-05-19 | 山东普瑞而机械制造有限公司 | Warm extrusion manufacturing method of gear |
| CN116135358B (en) * | 2023-03-13 | 2024-05-07 | 山东普瑞而机械制造有限公司 | Warm extrusion manufacturing method of gear |
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