CN113864424B - MC nylon wheel and production method thereof - Google Patents
MC nylon wheel and production method thereof Download PDFInfo
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- CN113864424B CN113864424B CN202111147592.6A CN202111147592A CN113864424B CN 113864424 B CN113864424 B CN 113864424B CN 202111147592 A CN202111147592 A CN 202111147592A CN 113864424 B CN113864424 B CN 113864424B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
- F16H55/50—Features essential to rope pulleys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0032—Producing rolling bodies, e.g. rollers, wheels, pulleys or pinions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
- C08G69/14—Lactams
- C08G69/16—Preparatory processes
-
- 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
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- 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
- C08K5/16—Nitrogen-containing compounds
- C08K5/29—Compounds containing one or more carbon-to-nitrogen double bonds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
- F16H55/48—Pulleys manufactured exclusively or in part of non-metallic material, e.g. plastics
-
- 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
Abstract
The invention discloses an MC nylon wheel and a production method thereof, in particular to the field of nylon wheels, and the MC nylon wheel comprises a nylon wheel body, wherein a mounting groove is formed in the center of the nylon wheel body in a penetrating manner, a shaping groove is formed in the outer edge of the nylon wheel body in a ring shape, weight reducing grooves are formed in the two sides of the nylon wheel body concentric with the mounting groove, and the nylon wheel body, the mounting groove, the shaping groove and the weight reducing grooves are integrally designed by an MC nylon base material; the MC nylon base material comprises the following components in percentage by weight: 99.987 to 99.993 percent of caprolactam, 0.006 to 0.01 percent of nano graphite lubricant and 0.001 to 0.003 percent of curing agent. According to the invention, the wear resistance and the service life of the MC nylon wheel are greatly improved through the improvement of the caprolactam performance by the V-shaped included angle shaping groove, the nano graphite lubricant and the curing agent, so that the service life of the MC nylon wheel used outdoors and matched with a wire rope is greatly improved.
Description
Technical Field
The invention relates to the technical field of nylon wheels, in particular to an MC nylon wheel and a production method thereof.
Background
In the oilfield mechanical industry, more than 80% of wheel trains are operated outdoors, and a large amount of wheel bodies are made of cast iron materials, so that the wheel bodies are heavy in weight, easy to rust and are in direct contact with the steel wire ropes, the service lives of the steel wire ropes are shortened, and the replacement difficulty is high. The MC nylon material has the advantages of light weight, self-lubricity, good chemical stability and the like, so that oiling is not needed, replacement is convenient, the steel wire rope is protected, and the service life of the steel wire rope is prolonged; and the cast iron wheel has adverse effects on the steel wire rope and the whole movement mechanism, such as accelerating the abrasion of the steel wire rope and the cast iron wheel, and affecting the transmission precision and the service life.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides an MC nylon wheel and a production method thereof, and the technical problems to be solved by the invention are as follows: how to solve the problem of lower service life of nylon wheels in the existing outdoor weeping operation.
In order to achieve the above purpose, the present invention provides the following technical solutions: the MC nylon wheel comprises a nylon wheel body, wherein a mounting groove is formed in the center of the nylon wheel body in a penetrating manner, a shaping groove is formed in the outer edge of the nylon wheel body in an annular manner, weight reducing grooves are formed in the two sides of the nylon wheel body and concentric with the mounting groove, and the nylon wheel body, the mounting groove, the shaping groove and the weight reducing grooves are integrally designed by an MC nylon base material;
the MC nylon base material comprises the following components in percentage by weight: 99.987-99.993 wt% of caprolactam, 0.006-0.01 wt% of nano graphite lubricant and 0.001-0.003 wt% of curing agent, wherein the curing agent comprises sodium hydroxide and toluene diisocyanate, and the ratio of the sodium hydroxide to the toluene diisocyanate is 1:1.5-2.
In a preferred embodiment, the cross section of the shaping groove is set to be V-shaped, the included angle value of the V-shaped is set to be 32-45 degrees, and the design of the cross section of the approximate triangle is utilized to ensure the uniformity of supporting force and stress.
In a preferred embodiment, the included angle in the shape of V and the edge of the nylon wheel body are all subjected to obtuse arc treatment, the outer diameter of the nylon wheel body and the inner diameter of the mounting groove are adjusted as required, and the setting groove and the weight-reducing groove are formed to reduce the material consumption of the integral nylon wheel body.
In a preferred embodiment, the shaping groove can be omitted during the production process.
The invention also comprises a production method of the MC nylon wheel, which comprises the following specific preparation steps:
s1, premixing: caprolactam is put into a melting box, and the melting box is heated to 160-180 ℃ and then is insulated;
s2, mixing: adding nano graphite lubricant and sodium hydroxide into the premix in the step S1 according to the proportion, then carrying out heat preservation and mixing, adding the mixed blank into a kettle, and heating by an electric furnace with the assistance of vacuum;
s3, forming: keeping the constant temperature in the step S2, adding toluene diisocyanate into the raw materials to be mixed according to a proportion, pouring the raw materials into a casting mold of an automatic constant temperature oven, and taking out the raw materials after being mixed by molding by centrifugal machine;
s4, finish machining: and (3) cooling in the step (S3), putting the mixture into high-temperature steam for heat preservation treatment after a batch of the mixture is finished by a numerical control lathe according to the requirements of customers.
In a preferred embodiment, the heat-preserving temperature in the step S1 is set to 175 ℃, the premixing duration is set to 5-10min, and the premixing judgment is set to complete liquefaction.
In a preferred embodiment, the temperature is controlled at 150 ℃ throughout the process in step S2, and the mixing time period is set to 3-5 minutes.
In a preferred embodiment, the steam temperature in the step S4 is set to 120 ℃, and the incubation period is set to twenty-four hours.
The invention has the technical effects and advantages that:
1. according to the invention, the wear resistance and the service life of the MC nylon wheel are greatly improved through the improvement of the caprolactam performance by the V-shaped included angle shaping groove, the nano graphite lubricant and the curing agent, so that the service life of the MC nylon wheel used outdoors and matched with a wire rope is greatly improved;
2. the invention greatly reduces the overall variety of the nylon wheel body by arranging the shaping groove and the weight reducing groove, and can not influence the stress intensity and the service life of the nylon wheel body.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a nylon wheel according to the present invention.
FIG. 2 is a schematic cross-sectional view of a nylon wheel according to the present invention.
The reference numerals are: 1 nylon wheel body, 2 mounting groove, 3 design groove, 4 subtract heavy groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
the invention provides an MC nylon wheel, which comprises a nylon wheel body 1, wherein a mounting groove 2 is formed in the center of the nylon wheel body 1 in a penetrating manner, a shaping groove 3 is formed in the outer edge of the nylon wheel body 1 in a ring shape, a weight-reducing groove 4 is formed in the two sides of the nylon wheel body 1 concentric with the mounting groove 2, and the nylon wheel body 1, the mounting groove 2, the shaping groove 3 and the weight-reducing groove 4 are integrally designed by MC nylon base materials;
the MC nylon base material comprises the following components in percentage by weight: 99.987-99.993 wt% of caprolactam, 0.006-0.01 wt% of nano graphite lubricant and 0.001-0.003 wt% of curing agent, wherein the curing agent comprises sodium hydroxide and toluene diisocyanate, and the ratio of the sodium hydroxide to the toluene diisocyanate is 1:1.5-2;
the cross section of the shaping groove 3 is set to be V-shaped, and the included angle value of the V-shaped is set to be 32-45 degrees; the included angle in the V shape and the edge of the nylon wheel body 1 are subjected to obtuse arc treatment, and the outer diameter of the nylon wheel body 1 and the inner diameter of the mounting groove 2 are adjusted as required.
Specifically, the embodiment is as follows: the MC nylon base material comprises the following components in percentage by weight: 99.991% of caprolactam, 0.006% of nano graphite lubricant and 0.003% of curing agent, wherein the curing agent comprises sodium hydroxide and toluene diisocyanate, the ratio of the sodium hydroxide to the toluene diisocyanate is 1:2, and the angle value of the V-shaped included angle is set to be 32 degrees;
the invention also comprises a production method of the MC nylon wheel, which comprises the following specific preparation steps:
s1, premixing: caprolactam is put into a melting box, heated to 175 ℃, and then kept for 5-10min until the caprolactam is completely liquefied;
s2, mixing: adding nano graphite lubricant and sodium hydroxide into the premix in the step S1 according to the proportion, then carrying out heat preservation and mixing, adding the mixed blank into a kettle, assisting vacuum, heating by an electric furnace, controlling the temperature at 150 ℃ in the whole process, and setting the mixing time to be 4 minutes;
s3, forming: keeping the constant temperature in the step S2, adding toluene diisocyanate into the raw materials to be mixed according to a proportion, pouring the raw materials into a casting mold of an automatic constant temperature oven, and taking out the raw materials after being mixed by molding by centrifugal machine;
s4, finish machining: and (3) cooling in the step (S3), putting the mixture into 120 ℃ high-temperature steam after a batch of the mixture is cooled, carrying out heat preservation treatment for twenty-four hours, and then finishing the finished product by using a numerical control lathe according to the requirements of customers.
Example 2:
the invention provides an MC nylon wheel, which comprises a nylon wheel body 1, wherein a mounting groove 2 is formed in the center of the nylon wheel body 1 in a penetrating manner, a shaping groove 3 is formed in the outer edge of the nylon wheel body 1 in a ring shape, a weight-reducing groove 4 is formed in the two sides of the nylon wheel body 1 concentric with the mounting groove 2, and the nylon wheel body 1, the mounting groove 2, the shaping groove 3 and the weight-reducing groove 4 are integrally designed by MC nylon base materials;
the MC nylon base material comprises the following components in percentage by weight: 99.987-99.993 wt% of caprolactam, 0.006-0.01 wt% of nano graphite lubricant and 0.001-0.003 wt% of curing agent, wherein the curing agent comprises sodium hydroxide and toluene diisocyanate, and the ratio of the sodium hydroxide to the toluene diisocyanate is 1:1.5-2;
the cross section of the shaping groove 3 is set to be V-shaped, and the included angle value of the V-shaped is set to be 32-45 degrees; the included angle in the V shape and the edge of the nylon wheel body 1 are subjected to obtuse arc treatment, and the outer diameter of the nylon wheel body 1 and the inner diameter of the mounting groove 2 are adjusted as required.
Specifically, the embodiment is as follows: the MC nylon base material comprises the following components in percentage by weight: 99.99wt% of caprolactam, 0.008wt% of nano graphite lubricant and 0.002wt% of curing agent, wherein the curing agent comprises sodium hydroxide and toluene diisocyanate, the ratio between the sodium hydroxide and the toluene diisocyanate is 1:2, and the angle value of the V-shaped included angle is set to be 40 degrees;
the invention also comprises a production method of the MC nylon wheel, which comprises the following specific preparation steps:
s1, premixing: caprolactam is put into a melting box, heated to 175 ℃, and then kept for 5-10min until the caprolactam is completely liquefied;
s2, mixing: adding nano graphite lubricant and sodium hydroxide into the premix in the step S1 according to the proportion, then carrying out heat preservation and mixing, adding the mixed blank into a kettle, assisting vacuum, heating by an electric furnace, controlling the temperature at 150 ℃ in the whole process, and setting the mixing time to be 4 minutes;
s3, forming: keeping the constant temperature in the step S2, adding toluene diisocyanate into the raw materials to be mixed according to a proportion, pouring the raw materials into a casting mold of an automatic constant temperature oven, and taking out the raw materials after being mixed by molding by centrifugal machine;
s4, finish machining: and (3) cooling in the step (S3), putting the mixture into 120 ℃ high-temperature steam after a batch of the mixture is cooled, carrying out heat preservation treatment for twenty-four hours, and then finishing the finished product by using a numerical control lathe according to the requirements of customers.
Example 3:
the invention provides an MC nylon wheel, which comprises a nylon wheel body 1, wherein a mounting groove 2 is formed in the center of the nylon wheel body 1 in a penetrating manner, a shaping groove 3 is formed in the outer edge of the nylon wheel body 1 in a ring shape, a weight-reducing groove 4 is formed in the two sides of the nylon wheel body 1 concentric with the mounting groove 2, and the nylon wheel body 1, the mounting groove 2, the shaping groove 3 and the weight-reducing groove 4 are integrally designed by MC nylon base materials;
the MC nylon base material comprises the following components in percentage by weight: 99.987-99.993 wt% of caprolactam, 0.006-0.01 wt% of nano graphite lubricant and 0.001-0.003 wt% of curing agent, wherein the curing agent comprises sodium hydroxide and toluene diisocyanate, and the ratio of the sodium hydroxide to the toluene diisocyanate is 1:1.5-2;
the cross section of the shaping groove 3 is set to be V-shaped, and the included angle value of the V-shaped is set to be 32-45 degrees; the included angle in the V shape and the edge of the nylon wheel body 1 are subjected to obtuse arc treatment, and the outer diameter of the nylon wheel body 1 and the inner diameter of the mounting groove 2 are adjusted as required.
Specifically, the embodiment is as follows: the MC nylon base material comprises the following components in percentage by weight: 99.987% of caprolactam, 0.01% of nano graphite lubricant and 0.003% of curing agent, wherein the curing agent comprises sodium hydroxide and toluene diisocyanate, the ratio of the sodium hydroxide to the toluene diisocyanate is 1:2, and the angle value of the V-shaped included angle is set to be 45 degrees;
the invention also comprises a production method of the MC nylon wheel, which comprises the following specific preparation steps:
s1, premixing: caprolactam is put into a melting box, heated to 175 ℃, and then kept for 5-10min until the caprolactam is completely liquefied;
s2, mixing: adding nano graphite lubricant and sodium hydroxide into the premix in the step S1 according to the proportion, then carrying out heat preservation and mixing, adding the mixed blank into a kettle, assisting vacuum, heating by an electric furnace, controlling the temperature at 150 ℃ in the whole process, and setting the mixing time to be 4 minutes;
s3, forming: keeping the constant temperature in the step S2, adding toluene diisocyanate into the raw materials to be mixed according to a proportion, pouring the raw materials into a casting mold of an automatic constant temperature oven, and taking out the raw materials after being mixed by molding by centrifugal machine;
s4, finish machining: and (3) cooling in the step (S3), putting the mixture into 120 ℃ high-temperature steam after a batch of the mixture is cooled, carrying out heat preservation treatment for twenty-four hours, and then finishing the finished product by using a numerical control lathe according to the requirements of customers.
Comparative example 1:
the invention provides an MC nylon wheel, which comprises a nylon wheel body 1, wherein a mounting groove 2 is formed in the center of the nylon wheel body 1 in a penetrating manner, a shaping groove 3 is formed in the outer edge of the nylon wheel body 1 in a ring shape, a weight-reducing groove 4 is formed in the two sides of the nylon wheel body 1 concentric with the mounting groove 2, and the nylon wheel body 1, the mounting groove 2, the shaping groove 3 and the weight-reducing groove 4 are integrally designed by MC nylon base materials;
the MC nylon base material comprises the following components in percentage by weight: 99.987-99.993 wt% of caprolactam, 0.006-0.01 wt% of nano graphite lubricant and 0.001-0.003 wt% of curing agent, wherein the curing agent comprises sodium hydroxide and toluene diisocyanate, and the ratio of the sodium hydroxide to the toluene diisocyanate is 1:1.5-2;
the cross section of the shaping groove 3 is set to be V-shaped, and the included angle value of the V-shaped is set to be 32-45 degrees; the included angle in the V shape and the edge of the nylon wheel body 1 are subjected to obtuse arc treatment, and the outer diameter of the nylon wheel body 1 and the inner diameter of the mounting groove 2 are adjusted as required.
Specifically, the embodiment is as follows: the MC nylon base material comprises the following components in percentage by weight: 99.99wt% of caprolactam, 0.008wt% of nano graphite lubricant and 0.002wt% of curing agent, wherein the curing agent comprises sodium hydroxide and toluene diisocyanate, the ratio between the sodium hydroxide and the toluene diisocyanate is 1:2, and the angle value of the V-shaped included angle is set to be 20 degrees;
the invention also comprises a production method of the MC nylon wheel, which comprises the following specific preparation steps:
s1, premixing: caprolactam is put into a melting box, heated to 175 ℃, and then kept for 5-10min until the caprolactam is completely liquefied;
s2, mixing: adding nano graphite lubricant and sodium hydroxide into the premix in the step S1 according to the proportion, then carrying out heat preservation and mixing, adding the mixed blank into a kettle, assisting vacuum, heating by an electric furnace, controlling the temperature at 150 ℃ in the whole process, and setting the mixing time to be 4 minutes;
s3, forming: keeping the constant temperature in the step S2, adding toluene diisocyanate into the raw materials to be mixed according to a proportion, pouring the raw materials into a casting mold of an automatic constant temperature oven, and taking out the raw materials after being mixed by molding by centrifugal machine;
s4, finish machining: and (3) cooling in the step (S3), putting the mixture into 120 ℃ high-temperature steam after a batch of the mixture is cooled, carrying out heat preservation treatment for twenty-four hours, and then finishing the finished product by using a numerical control lathe according to the requirements of customers.
Comparative example 2:
the invention provides an MC nylon wheel, which comprises a nylon wheel body 1, wherein a mounting groove 2 is formed in the center of the nylon wheel body 1 in a penetrating manner, a shaping groove 3 is formed in the outer edge of the nylon wheel body 1 in a ring shape, a weight-reducing groove 4 is formed in the two sides of the nylon wheel body 1 concentric with the mounting groove 2, and the nylon wheel body 1, the mounting groove 2, the shaping groove 3 and the weight-reducing groove 4 are integrally designed by MC nylon base materials;
the MC nylon base material comprises the following components in percentage by weight: 99.987-99.993 wt% of caprolactam, 0.006-0.01 wt% of nano graphite lubricant and 0.001-0.003 wt% of curing agent, wherein the curing agent comprises sodium hydroxide and toluene diisocyanate, and the ratio of the sodium hydroxide to the toluene diisocyanate is 1:1.5-2;
the cross section of the shaping groove 3 is set to be V-shaped, and the included angle value of the V-shaped is set to be 32-45 degrees; the included angle in the V shape and the edge of the nylon wheel body 1 are subjected to obtuse arc treatment, and the outer diameter of the nylon wheel body 1 and the inner diameter of the mounting groove 2 are adjusted as required.
Specifically, the embodiment is as follows: the MC nylon base material comprises the following components in percentage by weight: 99.99wt% of caprolactam, 0.008wt% of nano graphite lubricant and 0.002wt% of curing agent, wherein the curing agent comprises sodium hydroxide and toluene diisocyanate, the ratio between the sodium hydroxide and the toluene diisocyanate is 1:2, and the angle value of the V-shaped included angle is set to be 75 degrees;
the invention also comprises a production method of the MC nylon wheel, which comprises the following specific preparation steps:
s1, premixing: caprolactam is put into a melting box, heated to 175 ℃, and then kept for 5-10min until the caprolactam is completely liquefied;
s2, mixing: adding nano graphite lubricant and sodium hydroxide into the premix in the step S1 according to the proportion, then carrying out heat preservation and mixing, adding the mixed blank into a kettle, assisting vacuum, heating by an electric furnace, controlling the temperature at 150 ℃ in the whole process, and setting the mixing time to be 4 minutes;
s3, forming: keeping the constant temperature in the step S2, adding toluene diisocyanate into the raw materials to be mixed according to a proportion, pouring the raw materials into a casting mold of an automatic constant temperature oven, and taking out the raw materials after being mixed by molding by centrifugal machine;
s4, finish machining: and (3) cooling in the step (S3), putting the mixture into 120 ℃ high-temperature steam after a batch of the mixture is cooled, carrying out heat preservation treatment for twenty-four hours, and then finishing the finished product by using a numerical control lathe according to the requirements of customers.
The MC nylon wheels of the same specification prepared in examples 1-3 and comparative examples 1-2 were taken and tested in five groups to obtain the following data:
as can be seen from the table, the proportion of the raw materials in the embodiment 2 is moderate, and the service lives of the integral appearance and the position of the shaping groove 3 of the MC nylon wheel manufactured by adopting the technical scheme are improved to different degrees in the actual use process, so that the integral service life of the MC nylon wheel is prolonged to more than three months without obvious appearance and obvious rupture, and the service life of the MC nylon wheel is prolonged.
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (4)
1. A production method of an MC nylon wheel is characterized by comprising the following steps: the preparation method comprises the following specific steps:
s1, premixing: caprolactam is put into a melting box, and the melting box is heated to 160-180 ℃ and then is insulated; the heat preservation temperature is set to 175 ℃, the premixing time is set to 5-10min, and the premixing judgment is set to complete liquefaction;
s2, mixing: adding graphite lubricant and sodium hydroxide into the premix in the step S1 according to the proportion, then carrying out heat preservation and mixing, adding the mixed blank into a kettle, and heating by an electric furnace with the assistance of vacuum; the whole process is controlled at 150 ℃, and the mixing time is set to 3-5 minutes;
s3, forming: keeping the constant temperature in the step S2, adding toluene diisocyanate into the mixed raw materials according to a proportion, pouring the mixture into a casting mold of an automatic constant temperature oven, and taking out the mixture after molding by centrifugal mechanical molding;
s4, finish machining: after cooling in the step S3, putting the obtained product into high-temperature steam for heat preservation treatment after obtaining a batch, and then finishing a finished product by a numerical control lathe according to the requirements of customers; the temperature of the water vapor is set to 120 ℃, and the heat preservation treatment time is set to twenty-four hours;
the MC nylon wheel prepared by the method comprises a nylon wheel body (1), wherein an installation groove (2) is formed in the center of the nylon wheel body (1) in a penetrating manner, a shaping groove (3) is formed in the outer edge of the nylon wheel body (1) in a ring shape, weight-reducing grooves (4) are formed in the two sides of the nylon wheel body (1) concentric with the installation groove (2), and the nylon wheel body (1), the installation groove (2), the shaping groove (3) and the weight-reducing grooves (4) are integrally designed by MC nylon base materials;
the MC nylon base material comprises the following components in percentage by weight: 99.987-99.993 wt% of caprolactam, 0.006-0.01 wt% of graphite lubricant and 0.001-0.003 wt% of curing agent, wherein the curing agent comprises sodium hydroxide and toluene diisocyanate, and the ratio of the sodium hydroxide to the toluene diisocyanate is 1:1.5-2.
2. The method for producing the MC nylon wheel according to claim 1, wherein: the cross section of the shaping groove (3) is V-shaped, and the included angle value of the V-shaped is 32-45 degrees.
3. The method for producing the MC nylon wheel according to claim 2, wherein: the included angle in the V shape and the edge of the nylon wheel body (1) are subjected to obtuse arc treatment, and the outer diameter of the nylon wheel body (1) and the inner diameter of the mounting groove (2) are adjusted as required.
4. A method of producing an MC nylon wheel according to claim 3, characterized in that: the setting groove (3) can be canceled from setting in the preparation process.
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| CN202111147592.6A CN113864424B (en) | 2021-09-28 | 2021-09-28 | MC nylon wheel and production method thereof |
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| CN113864424B true CN113864424B (en) | 2023-09-15 |
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| CN107474243A (en) * | 2017-08-23 | 2017-12-15 | 江苏易元新材料科技有限公司 | Monomer moulding casting nylon, nylon wheel, the preparation method and application of nylon wheel |
| CN111925648A (en) * | 2020-08-13 | 2020-11-13 | 扬州尼尔工程塑料有限公司 | Method for synergistically modifying MC nylon engineering plastic by using graphene oxide/polytetrafluoroethylene compound |
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| JP2016165802A (en) * | 2015-03-09 | 2016-09-15 | 株式会社二幸技研 | Manufacturing method of nylon molded article |
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| CN107474243A (en) * | 2017-08-23 | 2017-12-15 | 江苏易元新材料科技有限公司 | Monomer moulding casting nylon, nylon wheel, the preparation method and application of nylon wheel |
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