CN114983178A - High-wear-resistance and aging-resistance nylon foot for seat and preparation process thereof - Google Patents
High-wear-resistance and aging-resistance nylon foot for seat and preparation process thereof Download PDFInfo
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- CN114983178A CN114983178A CN202210882738.XA CN202210882738A CN114983178A CN 114983178 A CN114983178 A CN 114983178A CN 202210882738 A CN202210882738 A CN 202210882738A CN 114983178 A CN114983178 A CN 114983178A
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- 239000004677 Nylon Substances 0.000 title claims abstract description 116
- 229920001778 nylon Polymers 0.000 title claims abstract description 116
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 25
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000032683 aging Effects 0.000 claims abstract description 14
- 239000011521 glass Substances 0.000 claims abstract description 10
- 239000004005 microsphere Substances 0.000 claims abstract description 7
- 239000006185 dispersion Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000012752 auxiliary agent Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000007822 coupling agent Substances 0.000 claims description 7
- 239000003381 stabilizer Substances 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000003351 stiffener Substances 0.000 claims description 6
- 239000012745 toughening agent Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 239000012760 heat stabilizer Substances 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims description 3
- BOQJOCGCWDUQOA-UHFFFAOYSA-L magnesium;3,4,5,6-tetrahydro-2h-azepin-7-olate;bromide Chemical group [Mg+2].[Br-].O=C1CCCCC[N-]1 BOQJOCGCWDUQOA-UHFFFAOYSA-L 0.000 claims description 3
- 238000003760 magnetic stirring Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- MOMGDEWWZBKDDR-UHFFFAOYSA-M sodium;3,4,5,6-tetrahydro-2h-azepin-7-olate Chemical compound [Na+].O=C1CCCCC[N-]1 MOMGDEWWZBKDDR-UHFFFAOYSA-M 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 238000011282 treatment Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000035882 stress Effects 0.000 abstract description 3
- 239000004917 carbon fiber Substances 0.000 description 10
- 238000005299 abrasion Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/002—Chair or stool bases
- A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/002—Chair or stool bases
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
-
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high wear-resistant and aging-resistant nylon foot for a seat and a preparation process thereof, and relates to the field of furniture seats, comprising nylon feet, wherein each nylon foot comprises five nylon feet, eight reinforcing rib plates and a nylon foot central main body, and a threaded mounting hole is arranged in the nylon foot central main body, oxidized activated carbon fibers are combined with nylon, so that the combination degree of the two is improved, the two are uniformly mixed, the connectivity between the two is stronger, nano aluminum oxide, graphite powder and hollow glass microspheres are reinforced and filled, the wear resistance and rigidity of a mixed material are greatly improved, the service life of the nylon feet is greatly prolonged, meanwhile, a reinforcing component is additionally arranged at the bottom of the finished nylon foot, so that when the nylon feet are supported under a large load, the corresponding reinforcing components are subjected to stress dispersion when the five nylon feet are supported by deformation outwards, the supporting capability of the nylon feet can be effectively improved.
Description
Technical Field
The invention relates to the field of furniture seats, in particular to a high-wear-resistance and aging-resistance nylon foot for a seat and a preparation process thereof.
Background
The seat is taken as a common article in daily life, the strength and the service life of the support legs at the bottom of the seat are very important factors for ensuring the quality of the seat, and the nylon support legs at the bottom of the existing seat are easy to age and wear in the using process; in the process of manufacturing the nylon feet, most of the glass fibers are used for reinforcing the nylon, so that the manufactured nylon feet are low in wear resistance and fatigue strength, and some of the carbon fibers are used for reinforcing the nylon, so that the cost is too high, and the surface finish degree is low.
Disclosure of Invention
The invention aims to provide a high-wear-resistance and aging-resistance nylon foot for a seat and a preparation process thereof, and aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high wear-resisting ageing-resistant nylon foot for seat, includes the nylon foot, the nylon foot includes five nylon stabilizer blades, eight deep floor and nylon foot center main part, be provided with the screw thread mounting hole in the nylon foot center main part, the screw thread mounting hole outside is provided with annular through hole, the terminal surface is provided with the forward annular spout of opening before the nylon foot center main part, annular spout and every be provided with the reinforcement component between the nylon stabilizer blade respectively.
Preferably, the five nylon support legs are fixedly connected with the outer end face of the center main body of the nylon support legs in an equidistant distribution mode, and the eight reinforcing rib plates are arranged between the inner side wall and the outer side wall of the annular through hole in an equidistant distribution mode to divide the annular through hole into eight trapezoidal cavities.
As preferred, strengthen the subassembly including slidable mounting support the traveller in the annular spout, it is equipped with circular supporting disk to rotate the cover on the support traveller, circular supporting disk with butt before the central main part of nylon foot between the terminal surface, it is equipped with the support stiffener to rotate the cover on the support traveller, support the stiffener with terminal surface butt before the circular supporting disk, it keeps away from to support the stiffener screw thread mounting hole central line direction terminal surface and corresponding it is articulated between the nylon stabilizer blade.
Preferably, a triangular arc-shaped fixing block is fixedly arranged between the central end of each reinforcing rib plate far away from the threaded mounting hole and the outer side wall of the annular through hole.
In addition, the invention also provides a preparation process of the high-wear-resistance and aging-resistance nylon foot for the seat, which comprises the following steps:
the method comprises the following steps: preparing raw materials with the following components: 45 parts of nylon, 10 parts of PAR plastic, 20 parts of activated carbon fiber, 5 parts of MBS toughening agent, 5 parts of nano aluminum oxide, 3 parts of graphite powder, 1 part of coupling agent, 6 parts of auxiliary agent and 5 parts of glass hollow microsphere;
step two: soaking activated carbon fibers in a potassium permanganate solution, adding concentrated sulfuric acid, heating for 2 hours, washing with distilled water to ensure that the pH value is 7, spraying with ethanol, and stirring;
step three: placing the coupling agent, the nano-alumina, the graphite powder and the glass hollow microspheres in a solvent for dispersion, and stirring simultaneously;
step four: mixing and stirring the stirring product in the step two and the stirring product in the step three, and then heating;
step five: fusing nylon, PAR plastic, MBS toughening agent and auxiliary agent with the mixed product in the fourth step, and extruding and granulating by a double-screw extruder;
step six: putting the raw materials extruded by the double-screw extruder into an injection molding machine, performing injection molding to obtain nylon pins, and performing a series of post-treatments such as polishing and deburring on the nylon pins to obtain finished nylon pins;
step seven; and mounting a reinforcing component on the finished nylon leg to obtain the high-wear-resistance and aging-resistance nylon leg for the seat.
Preferably, the stirring modes in the second step, the third step and the fourth step are magnetic stirring, and the temperature is controlled at 50 ℃.
Preferably, the heating time in the fourth step is 10 hours, the heating temperature is firstly increased to 60 ℃ for 2 hours, then increased to 70 ℃ for 1 hour, and finally increased to 85 ℃ for 7 hours.
Preferably, the auxiliary agent comprises an antioxidant, a heat stabilizer, a lubricant and a catalyst, and the component ratio is 1:1:1: 1.
Preferably, the catalyst is caprolactam magnesium bromide and caprolactam sodium salt, and the mixing ratio is 1: 2.
in conclusion, the invention has the beneficial effects that:
according to the invention, the oxidized activated carbon fibers and the nylon are combined, so that the combination degree of the oxidized activated carbon fibers and the nylon is improved, and the oxidized activated carbon fibers and the nylon can be uniformly mixed, so that the connectivity between the oxidized activated carbon fibers and the nylon is stronger, and the nano-alumina, the graphite powder and the hollow glass beads are reinforced and filled at the same time, so that the wear resistance and the rigidity of the mixed material are greatly improved, so that the service life of the nylon pin is greatly prolonged, and meanwhile, the reinforcing component is additionally arranged at the bottom of the finished nylon pin, so that when the nylon pin is supported by a large load and five nylon pins are supported by deformation outwards, the corresponding reinforcing component is subjected to stress dispersion, and the supporting capability of the nylon pin can be effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a high wear-resistant and aging-resistant nylon foot for a seat according to the invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is a schematic view of a frame structure of a manufacturing process of the high wear-resistant and aging-resistant nylon foot for a seat according to the present invention.
The scores in the figures are as follows: 10. nylon feet; 101. nylon support legs; 102. reinforcing rib plates; 103. a nylon foot center body; 14. supporting the reinforcing rods; 15. a support strut; 16. a circular support disc; 17. and a triangular arc-shaped fixing block.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The invention will now be described in detail with reference to fig. 1-3, wherein for ease of description the orientations described hereinafter are defined as follows: the up, down, left, right, front, rear direction described below corresponds to the front, back, left, right, top, bottom direction of the view of fig. 1, fig. 1 is a front view of the apparatus of the present invention, and the direction shown in fig. 1 corresponds to the front, back, left, right, top, bottom direction of the apparatus of the present invention.
Referring to fig. 1-3, an embodiment of the present invention is shown: the utility model provides a seat is with high wear-resisting ageing-resistant nylon foot, includes nylon foot 10, nylon foot 10 includes five nylon stabilizer blades 101, eight deep floor 102 and nylon foot center main part 103, be provided with screw thread mounting hole 13 in the nylon foot center main part 103, the 13 outsides in screw thread mounting hole are provided with annular through hole 11, the terminal surface is provided with the prorsad annular spout 12 of opening before the nylon foot center main part 103, annular spout 12 and every be provided with the reinforcement component between the nylon stabilizer blade 101 respectively.
In addition, in one embodiment, five nylon support legs 101 are fixedly connected with the outer end face of the nylon support leg central main body 103 in an equidistant distribution manner, and eight reinforcing rib plates 102 are arranged between the inner side wall and the outer side wall of the annular through hole 11 in an equidistant distribution manner, so as to divide the annular through hole 11 into eight trapezoidal cavities.
In addition, in one embodiment, the reinforcing component includes a supporting sliding column 15 slidably mounted in the annular sliding groove 12, a circular supporting disk 16 is rotatably sleeved on the supporting sliding column 15, the circular supporting disk 16 abuts against the front end face of the nylon foot center main body 103, a supporting reinforcing rod 14 is rotatably sleeved on the supporting sliding column 15, the supporting reinforcing rod 14 abuts against the front end face of the circular supporting disk 16, and the supporting reinforcing rod 14 is far away from the central line direction end face of the threaded mounting hole 13 and is hinged to the corresponding nylon foot 101.
In addition, in one embodiment, a triangular arc-shaped fixing block 17 is fixedly arranged between the central end of each reinforcing rib plate 102 far away from the threaded mounting hole 13 and the outer side wall of the annular through hole 11.
In addition, the invention also provides a preparation process of the high-wear-resistance and aging-resistance nylon foot for the seat, which comprises the following steps:
the method comprises the following steps: preparing raw materials with the following components: 45 parts of nylon, 10 parts of PAR plastic, 20 parts of activated carbon fiber, 5 parts of MBS toughening agent, 5 parts of nano aluminum oxide, 2.5-5.5 parts of graphite powder, 1 part of coupling agent, 3.5-6.5 parts of auxiliary agent and 5 parts of glass hollow microsphere;
step two: soaking activated carbon fibers in a potassium permanganate solution, adding concentrated sulfuric acid, heating for 2-3 hours, washing with distilled water to ensure that the pH value is 7, spraying with ethanol, and stirring;
step three: placing the coupling agent, the nano-alumina, the graphite powder and the glass hollow microspheres in a solvent for dispersion, and stirring simultaneously;
step four: mixing and stirring the stirring product in the step two and the stirring product in the step three, and then heating;
step five: fusing nylon, PAR plastic, MBS toughening agent and auxiliary agent with the mixed product in the fourth step, and extruding and granulating by a double-screw extruder;
step six: putting the raw materials extruded by the double-screw extruder into an injection molding machine, performing injection molding to obtain nylon pins, and performing a series of post-treatments such as polishing and deburring on the nylon pins to obtain finished nylon pins;
step seven; and mounting a reinforcing component on the finished nylon pin to obtain the high-wear-resistance and aging-resistance nylon pin for the seat.
In addition, in one embodiment, the stirring modes in the second step, the third step and the fourth step are magnetic stirring, and the temperature is controlled at 50 ℃.
In addition, in one embodiment, the heating time in the fourth step is 10 hours, the heating temperature is firstly increased to 60 ℃ for 2 hours, then increased to 70 ℃ for 1 hour, and finally increased to 85 ℃ for 7 hours.
In addition, in one embodiment, the auxiliary agent comprises an antioxidant, a heat stabilizer, a lubricant and a catalyst, and the component ratio is 1:1:1: 1.
In addition, in one embodiment, the catalyst is caprolactam magnesium bromide and caprolactam sodium salt, and the mixing ratio is 1: 2.
firstly, the active carbon fiber is oxidized, thereby greatly improving the dispersibility of the active carbon fiber, further maximizing the combination degree of the active carbon fiber and the nylon when the active carbon fiber and the nylon are mixed, simultaneously greatly improving the surface roughness of the active carbon fiber, preventing excessive pit formation and cracking when the active carbon fiber and the nylon are combined, then improving the chemical combination between the active carbon fiber and the nylon through a coupling agent, simultaneously forming a continuous film on the surface of the blood activating carbon fiber, further avoiding the active carbon fiber from absorbing impurity moisture and the like in the air, and greatly improving the wear resistance of nylon feet by filling the nano alumina, graphite powder and hollow glass beads, in addition, the surface energy of the nano alumina is large, the nano alumina is tightly combined with a base material, the mechanical property of the composite material is improved to a certain degree by filling the graphite powder, and the composite material is reduced by shearing in the abrasion process, in addition, the graphite filler with self-lubricating property promotes adhesion transfer of the composite material, thereby further reducing the degree of cutting wear and relieving fiber peeling and cracking to a certain extent. The nano alumina and graphite powder are used as filling agents, so that the shearing force applied to materials during abrasion can be reduced, the particles of the nano alumina are small, the nano alumina can be uniformly dispersed in a system, the stability of the layered structure of graphite can be assisted, and the rigidity and the abrasion resistance of a machine body can be enhanced.
Therefore, the invention can find that the oxidized activated carbon fiber and the nylon are combined, the combination degree of the oxidized activated carbon fiber and the nylon is improved, and the oxidized activated carbon fiber and the nylon can be uniformly mixed, so that the connectivity between the oxidized activated carbon fiber and the nylon is stronger, and the nano alumina, the graphite powder and the hollow glass beads are reinforced and filled at the same time, so that the wear resistance and the rigidity of the mixed material are greatly improved, the service life of the nylon pin is greatly prolonged, meanwhile, the reinforcing component is additionally arranged at the bottom of the finished nylon pin, so that when the nylon pin is supported by a large load, and five nylon pins are supported by outward deformation, the corresponding reinforcing component is subjected to stress dispersion, and the supporting capability of the nylon pin can be effectively improved.
The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.
Claims (9)
1. The utility model provides a high wear-resisting ageing-resistant nylon foot for seat, includes nylon foot (10), its characterized in that: the nylon foot (10) comprises five nylon support legs (101), eight reinforcing rib plates (102) and a nylon foot center main body (103), a threaded mounting hole (13) is formed in the nylon foot center main body (103), an annular through hole (11) is formed in the outer side of the threaded mounting hole (13), an annular sliding groove (12) with a forward opening is formed in the front end face of the nylon foot center main body (103), and reinforcing components are arranged between the annular sliding groove (12) and each nylon support leg (101).
2. The high wear-resistant and aging-resistant nylon foot for the seat as claimed in claim 1, wherein: five nylon stabilizer blades (101) with be equidistant distribution fixed connection between nylon foot center main part (103) the outer terminal surface, eight deep floor (102) equidistance distribution sets up between annular through-hole (11) inside and outside lateral wall, will annular through-hole (11) divide into eight trapezoidal cavities.
3. The high wear-resistant and aging-resistant nylon foot for the seat as claimed in claim 1, wherein: strengthen the subassembly and include slidable mounting support traveller (15) in annular chute (12), it is equipped with circular supporting disk (16) to rotate the cover on support traveller (15), circular supporting disk (16) with butt before nylon foot center main part (103) between the terminal surface, it is equipped with support stiffener (14) to rotate the cover on support traveller (15), support stiffener (14) with terminal surface butt before circular supporting disk (16), support stiffener (14) and keep away from screw thread mounting hole (13) central line direction terminal surface and corresponding it is articulated between nylon stabilizer blade (101).
4. The high wear-resistant and aging-resistant nylon foot for the seat as claimed in claim 1, wherein: and a triangular arc-shaped fixing block (17) is fixedly arranged between the central end of each reinforcing rib plate (102) far away from the thread mounting hole (13) and the outer side wall of the annular through hole (11).
5. A preparation process of high wear-resistant and aging-resistant nylon feet for seats is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: preparing raw materials of the following components: 45 parts of nylon, 10 parts of PAR plastic, 20 parts of activated carbon fiber, 5 parts of MBS toughening agent, 5 parts of nano aluminum oxide, 2.5-5.5 parts of graphite powder, 1 part of coupling agent, 3.5-6.5 parts of auxiliary agent and 5 parts of glass hollow microsphere;
step two: soaking activated carbon fibers in a potassium permanganate solution, adding concentrated sulfuric acid, heating for 2-3 hours, washing with distilled water to ensure that the pH value is 7, spraying with ethanol, and stirring;
step three: placing the coupling agent, the nano-alumina, the graphite powder and the glass hollow microspheres in a solvent for dispersion, and stirring simultaneously;
step four: mixing and stirring the stirring product in the step two and the stirring product in the step three, and then heating;
step five: fusing nylon, PAR plastic, MBS toughening agent and auxiliary agent with the mixed product in the fourth step, and extruding and granulating by a double-screw extruder;
step six: putting the raw materials extruded by the double-screw extruder into an injection molding machine, performing injection molding to obtain nylon pins, and performing a series of post-treatments such as polishing and deburring on the nylon pins to obtain finished nylon pins;
step seven; and mounting a reinforcing component on the finished nylon pin to obtain the high-wear-resistance and aging-resistance nylon pin for the seat.
6. The preparation process of the high wear-resistant and aging-resistant nylon foot for the seat as claimed in claim 5, wherein the preparation process comprises the following steps: the stirring modes in the second step, the third step and the fourth step are magnetic stirring, and the temperature is controlled at 50 ℃.
7. The preparation process of the high wear-resistant and aging-resistant nylon foot for the seat as claimed in claim 5, wherein: the heating time in the fourth step is 10 hours, the heating temperature is firstly increased to 60 ℃ for heating for 2 hours, then increased to 70 ℃ for heating for 1 hour, and finally increased to 85 ℃ for heating for 7 hours.
8. The preparation process of the high wear-resistant and aging-resistant nylon foot for the seat as claimed in claim 5, wherein: the auxiliary agent comprises an antioxidant, a heat stabilizer, a lubricant and a catalyst, and the component ratio is 1:1:1: 1.
9. The preparation process of the high wear-resistant and aging-resistant nylon foot for the seat as claimed in claim 8, wherein: the catalyst is caprolactam magnesium bromide and caprolactam sodium salt, and the mixing ratio is 1: 2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210882738.XA CN114983178A (en) | 2022-07-26 | 2022-07-26 | High-wear-resistance and aging-resistance nylon foot for seat and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210882738.XA CN114983178A (en) | 2022-07-26 | 2022-07-26 | High-wear-resistance and aging-resistance nylon foot for seat and preparation process thereof |
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| CN114983178A true CN114983178A (en) | 2022-09-02 |
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| CN215422380U (en) * | 2021-09-14 | 2022-01-07 | 杨晓光 | Forestry disease and pest control device |
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