CN117801507A - High-bearing high-strength nylon composite material for sliding damping of fan - Google Patents
High-bearing high-strength nylon composite material for sliding damping of fan Download PDFInfo
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- CN117801507A CN117801507A CN202311313056.8A CN202311313056A CN117801507A CN 117801507 A CN117801507 A CN 117801507A CN 202311313056 A CN202311313056 A CN 202311313056A CN 117801507 A CN117801507 A CN 117801507A
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- 239000004677 Nylon Substances 0.000 title claims abstract description 62
- 229920001778 nylon Polymers 0.000 title claims abstract description 62
- 239000002131 composite material Substances 0.000 title claims abstract description 29
- 238000013016 damping Methods 0.000 title claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 40
- 229920005989 resin Polymers 0.000 claims abstract description 40
- 239000003365 glass fiber Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000000314 lubricant Substances 0.000 claims abstract description 12
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 9
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 29
- 239000011259 mixed solution Substances 0.000 claims description 22
- 239000000243 solution Substances 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 14
- 239000002808 molecular sieve Substances 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 14
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 14
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 12
- 229910052791 calcium Inorganic materials 0.000 claims description 12
- 239000011575 calcium Substances 0.000 claims description 12
- 239000006229 carbon black Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- OEIWPNWSDYFMIL-UHFFFAOYSA-N dioctyl benzene-1,4-dicarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C=C1 OEIWPNWSDYFMIL-UHFFFAOYSA-N 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 7
- 239000005977 Ethylene Substances 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000004519 grease Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 238000009210 therapy by ultrasound Methods 0.000 claims description 5
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 4
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- CRBJBYGJVIBWIY-UHFFFAOYSA-N 2-isopropylphenol Chemical compound CC(C)C1=CC=CC=C1O CRBJBYGJVIBWIY-UHFFFAOYSA-N 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000007731 hot pressing Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000000399 optical microscopy Methods 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 238000012805 post-processing Methods 0.000 claims description 2
- 238000004626 scanning electron microscopy Methods 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims 1
- 238000004090 dissolution Methods 0.000 claims 1
- 239000011159 matrix material Substances 0.000 abstract description 4
- 239000012744 reinforcing agent Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
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- 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 provides a high-bearing high-strength nylon composite material for fan sliding damping, which comprises nylon resin; a glass fiber material; a lubricant; an antioxidant; other unavoidable impurities; wherein the nylon resin and the glass fiber material are combined and reinforced by a microstructure in a skeleton form when being molded. The glass fiber material and nylon resin form a common framework, the glass fiber is used as a reinforcing agent and distributed in a nylon resin matrix to form an interweaved network structure, and the common framework provides basic mechanical strength and rigidity for the composite material; then the microstructure is enhanced on the basis of the common framework and interacts with the framework structure of the glass fiber. The microstructure components form a secondary skeleton network on a microscopic scale, so that the mechanical properties of the material are further enhanced, and the material is suitable for the use of sliding damping of a fan.
Description
Technical Field
The invention particularly relates to a high-bearing high-strength nylon composite material for sliding damping of a fan.
Background
The wind power generation field is used as an important component of new energy, the application range of the wind power generation field is larger and larger, and the stability requirement on the components is gradually improved. In fans, the rotational speed of the fan needs to be controlled, while high-strength nylon materials are used as important braking materials, the performance of the high-strength nylon materials can affect the overall service life of the fan, and the performance of the high-strength nylon materials is further improved for all nylon composite materials in the scene.
In the existing production technology, the nylon material and the glass fiber material are combined, so that the wear resistance of the nylon can be remarkably improved, and the application range of the nylon can be effectively enlarged. However, when the nylon material is used in a fan, the environment is more severe and the oxidation degree is higher due to the high-altitude environment, and the nylon material needs a certain service life besides resisting damping due to the problems of water vapor condensation and the like, and in a nylon-glass fiber system, the compatibility of glass fibers and a nylon matrix needs to be further improved, so that the service life can be further improved.
For the prior art, the direction of improving the compatibility is more in that the surface property of the glass fiber is changed by adopting the impregnating compound, so that the compatibility is improved, and the theoretical research on improvement based on the microstructure is less, on one hand, the microstructure is more difficult to control, the forming condition is more severe, and on the other hand, the microstructure can damage the structural stability of the damping nylon, so that the service life is influenced.
Disclosure of Invention
The main solution direction of the invention is to provide a novel microstructure construction mode, and apply the novel microstructure construction mode to the preparation of fan damping nylon, thereby endowing nylon-glass fiber with better compatibility so as to improve the self life of the material, and finally improve the service life of the material, and the specific scheme is as follows:
a high-bearing high-strength nylon composite material for sliding damping of a fan comprises the following components in parts by mass:
50-120 parts of nylon resin;
40-80 parts of glass fiber material;
5-10 parts of a lubricant;
5-10 parts of an antioxidant;
less than 0.015 parts of other unavoidable impurities;
when the nylon resin and the glass fiber material are molded, the nylon resin is combined and reinforced through a microstructure in a skeleton form, and the microstructure comprises the following substances:
5-7 parts of ethylene resin, 2-3 parts of dioctyl terephthalate, 1-2 parts of modified graphene, 1-2 parts of SBA-16 mesoporous molecular sieve, 2-3 parts of heavy calcium or barite powder and 1-2 parts of carbon black.
Further, the preparation method of the modified graphene comprises the following steps:
step one: mixing graphite oxide with the particle size of 50-130nm with water and strong alkali to obtain mixed solution;
step two: refluxing the mixed solution in the first step under stirring for 50-120min;
step three: and (3) after the mixed solution is refluxed, carrying out ultrasonic treatment on the mixed solution to obtain ultrasonic solution, and centrifuging the ultrasonic solution to obtain the modified graphene.
Further, the preparation method of the microstructure comprises the following steps:
s1: uniformly mixing ethylene resin, dioctyl terephthalate, modified graphene, SBA-16 mesoporous molecular sieve, heavy calcium or barite powder and carbon black;
s2: nylon resin and glass fiber were added: combining the mixed microstructure material with nylon resin and glass fiber to ensure that the microstructure is in a skeleton form for combination reinforcement;
s3, injection molding:
s301, preheating: setting the temperature of the charging barrel to 240-260 ℃ and the temperature of the die to 80-100 ℃;
s302 injection: injecting the mixture into a mold, wherein the injection pressure is 80-120MPa, and the injection time is more than or equal to 10 seconds;
s303, pressure maintaining: maintaining the pressure of 50-80 MPa;
s304, cooling: cooling in the mould for 90-120 seconds;
s4: placing the molded part into a curing furnace, setting the temperature to 80-120 ℃ and curing for 2-4 hours;
s5, post-processing: including cutting, grinding and lubrication by means of grease adhesion.
Further, the specific steps of combining the microstructure matters in the S2 with the nylon resin and the glass fibers are as follows:
s201: dissolving nylon resin in DMF to form nylon solution; dispersing or dissolving the microstructure material in the same or compatible solvent; then mixing the two to form a uniform solution;
s202: adding glass fiber with the addition amount of 5-20wt% under the state of solution, and stirring and mixing;
s203: casting the mixed solution on a flat plate, and drying at 40-60 ℃ for 12-24 hours to volatilize the solvent and form a uniform composite film;
s204: carrying out hot pressing on the obtained film at high temperature to form combination between nylon resin, glass fiber and microstructure substances;
s205: observing microstructure distribution: optical or scanning electron microscopy was used to observe the distribution of microstructures in the composite.
Further, SBA-16The specific surface area of the mesoporous molecular sieve is 800-1200m 2 And/g, the pore diameter is 2-10nm, the pore volume is 0.5-1ml/g, and the particle size is 100-500nm.
Further, the mass ratio of graphite oxide to water in the first step is 1:500-1000, the concentration of strong alkali is 0.3-1mg/mL, the centrifugal speed in the third step is 8000-14000r/min, and the centrifugal time is 35-80min.
Further, the dwell time of S303 is 10-15S.
Further, the grain diameter of the heavy calcium or the barite powder is 1-10 mu m, and the crystallinity is 80-90%.
Further, the lubricant is one or a combination of more than one of polytetrafluoroethylene, silicone lubricant or paraffin.
Further, the antioxidant is one or a combination of more of 2, 6-di-tert-butyl-p-cresol, isopropyl phenol or phosphate.
The beneficial effects are that:
(1) In the technical scheme, a common framework is formed by glass fiber materials, nylon resin and the like, glass fibers are used as reinforcing agents and distributed in a nylon resin matrix to form an interweaved network structure, and the common framework provides basic mechanical strength and rigidity for the composite material; then the microstructure is enhanced on the basis of a common framework, and various components in the structure, such as vinyl resin, modified graphene, SBA-16 mesoporous molecular sieve and the like, are uniformly distributed in a nylon resin matrix and interact with the framework structure of glass fibers. These microstructure components form a secondary skeletal network on a microscopic scale, further enhancing the mechanical properties of the material.
(2) The modified graphene is added into the microstructure, so that the strength, the thermal conductivity and the wear resistance of the composite material can be enhanced, and the working efficiency and the stability of the fan are improved; the SBA-16 mesoporous molecular sieve with higher specific surface area and proper aperture and pore volume can increase the adsorption capacity and dispersibility of the composite material and improve the processability and mechanical properties of the material.
(3) By adding the lubricant and the antioxidant into the material, the sliding damping performance of the composite material is enhanced, friction and abrasion during the running of the fan can be reduced, and the service life of the fan is prolonged.
(4) Through inspection, the nylon composite material has excellent bearing capacity and strength, and is suitable for a high-load working environment in a fan sliding damping system. The device can effectively support and bear the force and pressure of the fan during operation, and improves the stability and reliability of the system.
Detailed Description
The present invention will be further described in detail with reference to examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
Example 1:
1. preparing raw materials
Nylon resin: 100 parts;
glass fiber material: 60 parts;
lubricant (polytetrafluoroethylene): 8 parts;
antioxidant (2, 6-di-tert-butyl-p-cresol): 8 parts;
other unavoidable impurities: 0.01 part;
vinyl resin: 6 parts of dioctyl terephthalate: 2.5 parts of modified graphene: 1.5 parts of SBA-16 mesoporous molecular sieve: 1.5 parts of heavy calcium powder: 2.5 parts of carbon black: 1.5 parts.
2. A method for preparing modified graphene:
mixing graphite oxide with the particle size of 80nm with water and strong alkali (the concentration is 0.6 mg/mL) according to the mass ratio of 1:750 to obtain mixed solution;
refluxing the mixed solution under stirring for 90min;
and (3) after the mixed solution is refluxed, carrying out ultrasonic treatment on the mixed solution to obtain ultrasonic solution, and centrifuging the ultrasonic solution at a centrifugal speed of 12000r/min for 50min to obtain the modified graphene.
3. The preparation method of the microstructure comprises the following steps:
uniformly mixing ethylene resin, dioctyl terephthalate, modified graphene, SBA-16 mesoporous molecular sieve (specific surface area is 1000m < 2 >/g, pore diameter is 5nm, pore volume is 0.8ml/g, particle size is 300 nm), heavy calcium powder (particle size is 5 mu m, crystallinity is 85%) and carbon black;
combining the mixed microstructure material with nylon resin (100 parts) and glass fiber (60 parts) to ensure that the microstructure is in a skeleton form for combination reinforcement;
injection molding:
s301, preheating: setting the temperature of the charging barrel to 250 ℃ and the temperature of the die to 90 ℃;
s302 injection: injecting the mixture into a mold at a pressure of 100MPa for 12 seconds;
s303, pressure maintaining: maintaining a pressure of 60MPa for 12s;
s304, cooling: cooling in the mold for 110 seconds;
placing the molded part into a curing furnace, wherein the temperature is set to be 100 ℃, and the curing time is 3 hours;
post-treatment: including cutting, grinding and lubrication by means of grease adhesion.
Example 2:
1. preparing raw materials
Nylon resin: 105 parts;
glass fiber material: 65 parts;
lubricant (polytetrafluoroethylene): 7 parts;
antioxidant (2, 6-di-tert-butyl-p-cresol): 7 parts;
other unavoidable impurities: 0.012 parts;
vinyl resin: 6.5 parts of dioctyl terephthalate: 2.8 parts of modified graphene: 1.2 parts of SBA-16 mesoporous molecular sieve: 1.8 parts of heavy calcium powder: 2.2 parts of carbon black: 1.8 parts.
2. A method for preparing modified graphene:
mixing graphite oxide with the particle size of 85nm with water and strong alkali (the concentration is 0.55 mg/mL) according to the mass ratio of 1:700 to obtain mixed solution;
refluxing the mixed solution under stirring for 85min;
and (3) after the mixed solution is refluxed, carrying out ultrasonic treatment on the mixed solution to obtain ultrasonic solution, and centrifuging the ultrasonic solution at the speed of 11500r/min for 45min to obtain the modified graphene.
3. The preparation method of the microstructure comprises the following steps:
uniformly mixing ethylene resin, dioctyl terephthalate, modified graphene, SBA-16 mesoporous molecular sieve (with the specific surface area of 1050m2/g, the aperture of 6nm, the pore volume of 0.85ml/g and the particle size of 320 nm), heavy calcium powder (with the particle size of 6 mu m and the crystallinity of 87 percent) and carbon black;
combining the mixed microstructure material with nylon resin (105 parts) and glass fiber (65 parts) to ensure that the microstructure is in a skeleton form for combination reinforcement;
injection molding:
s301, preheating: setting the temperature of the charging barrel to 255 ℃ and the temperature of the die to 92 ℃;
s302 injection: injecting the mixture into a mold at a pressure of 105MPa for 11 seconds;
s303, pressure maintaining: maintaining a pressure of 65MPa for a dwell time of 11s;
s304, cooling: cooling in the mold for 105 seconds;
placing the molded part into a curing furnace, setting the temperature to 105 ℃ and curing for 2.5 hours;
post-treatment: including cutting, grinding and lubrication by means of grease adhesion.
Example 3:
1. preparing raw materials
Nylon resin: 110 parts;
glass fiber material: 70 parts;
lubricant (silicone lubricant): 9 parts;
antioxidants (phosphate): 9 parts;
other unavoidable impurities: 0.013 parts;
vinyl resin: 7 parts of dioctyl terephthalate: 3 parts of modified graphene: 2 parts of SBA-16 mesoporous molecular sieve: 2 parts of heavy calcium powder: 3 parts of carbon black: 1 part.
2. A method for preparing modified graphene:
mixing graphite oxide with the particle size of 100nm with water and strong alkali (the concentration is 0.8 mg/mL) according to the mass ratio of 1:800 to obtain mixed solution;
refluxing the mixed solution under stirring for 100min;
and (3) after the mixed solution is refluxed, carrying out ultrasonic treatment on the mixed solution to obtain ultrasonic solution, and centrifuging the ultrasonic solution at the speed of 13000r/min for 60min to obtain the modified graphene.
3. The preparation method of the microstructure comprises the following steps:
uniformly mixing ethylene resin, dioctyl terephthalate, modified graphene, SBA-16 mesoporous molecular sieve (with specific surface area of 1100m2/g, aperture of 6nm, pore volume of 0.9ml/g, particle size of 350 nm), heavy calcium powder (with particle size of 6 μm, crystallinity of 87%) and carbon black;
combining the mixed microstructure material with nylon resin (110 parts) and glass fiber (70 parts) to ensure that the microstructure is in a skeleton form for combination reinforcement;
4. injection molding:
s301, preheating: setting the temperature of the charging barrel to 255 ℃, and setting the temperature of the die to 95 ℃;
s302 injection: injecting the mixture into a mold at a pressure of 110MPa for 14 seconds;
s303, pressure maintaining: maintaining a pressure of 70MPa for 14s;
s304, cooling: cooling in the mold for 115 seconds;
5. post-treatment:
placing the molded part into a curing furnace, wherein the temperature is set to be 110 ℃, and the curing time is 3.5 hours;
post-treatment: including cutting, grinding and lubrication by means of grease adhesion.
Comparative example:
the preparation of the comparative example was similar to example 1, except that the comparative example did not contain a microstructure.
The nylon composite materials prepared in examples 1 to 3 and comparative example were subjected to performance test, and the test data are as follows:
compared with the comparative example without the microstructure, the nylon composite material prepared by the technical scheme provided by the invention has the advantages that the mechanical properties such as compression strength, hardness, tensile length, bending strength and the like are improved, and the nylon composite material is suitable for a high-load working environment in a fan sliding damping system. The device can effectively support and bear the force and pressure of the fan during operation, and improves the stability and reliability of the system.
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 (10)
1. The high-bearing high-strength nylon composite material for the sliding damping of the fan is characterized by comprising the following components in parts by weight:
50-120 parts of nylon resin;
40-80 parts of glass fiber material;
5-10 parts of a lubricant;
5-10 parts of an antioxidant;
less than 0.015 parts of other unavoidable impurities;
when the nylon resin and the glass fiber material are molded, the nylon resin is combined and reinforced through a microstructure in a skeleton form, and the microstructure comprises the following substances:
5-7 parts of ethylene resin, 2-3 parts of dioctyl terephthalate, 1-2 parts of modified graphene, 1-2 parts of SBA-16 mesoporous molecular sieve, 2-3 parts of heavy calcium or barite powder and 1-2 parts of carbon black.
2. The high-load-bearing high-strength nylon composite material for sliding damping of a fan according to claim 1, wherein the preparation method of the modified graphene is as follows:
step one: mixing graphite oxide with the particle size of 50-130nm with water and strong alkali to obtain mixed solution;
step two: refluxing the mixed solution in the first step under stirring for 50-120min;
step three: and (3) after the mixed solution is refluxed, carrying out ultrasonic treatment on the mixed solution to obtain ultrasonic solution, and centrifuging the ultrasonic solution to obtain the modified graphene.
3. The high-load-bearing high-strength nylon composite for sliding damping of a fan according to claim 1, wherein the preparation method of the microstructure comprises the following steps:
s1: uniformly mixing ethylene resin, dioctyl terephthalate, modified graphene, SBA-16 mesoporous molecular sieve, heavy calcium or barite powder and carbon black;
s2: nylon resin and glass fiber were added: combining the mixed microstructure material with nylon resin and glass fiber to ensure that the microstructure is in a skeleton form for combination reinforcement;
s3, injection molding:
s301, preheating: setting the temperature of a charging barrel to 240-260 ℃ and setting the temperature of a die to 80-100 ℃;
s302 injection: injecting the mixture into a mold, wherein the injection pressure is 80-120MPa, and the injection time is more than or equal to 10 seconds;
s303, pressure maintaining: maintaining the pressure of 50-80 MPa;
s304, cooling: cooling in a mold for 90-120 seconds;
s4: placing the molded part into a curing furnace, setting the temperature to be 80-120 ℃ and the curing time to be 2-4 hours;
s5, post-processing: including cutting, grinding and lubrication by means of grease adhesion.
4. The high-load-bearing high-strength nylon composite material for fan sliding damping according to claim 2, wherein the specific steps of combining microstructure substances with nylon resin and glass fibers in S2 are as follows:
s201: dissolving nylon resin in DMF, and maintaining a certain temperature during dissolution to form nylon solution; dispersing or dissolving the microstructure material in the same or compatible solvent; then mixing the two to form a uniform solution;
s202: adding glass fiber with the addition amount of 5-20wt% under the state of solution, and stirring and mixing;
s203: casting the mixed solution on a flat plate, and drying at 40-60 ℃ for 12-24 hours to volatilize the solvent to form a uniform composite film;
s204: carrying out hot pressing on the obtained film at high temperature to form combination between nylon resin, glass fiber and microstructure substances;
s205: observing microstructure distribution: optical or scanning electron microscopy was used to observe the distribution of microstructures in the composite.
5. The nylon composite material with high bearing capacity and high strength for sliding damping of blower of claim 1, wherein the specific surface area of SBA-16 mesoporous molecular sieve is 800-1200m 2 And/g, the pore diameter is 2-10nm, the pore volume is 0.5-1ml/g, and the particle size is 100-500nm.
6. The high-load high-strength nylon composite material for sliding damping of a fan according to claim 2, wherein the mass ratio of graphite oxide to water in the first step is 1:500-1000, the concentration of strong alkali is 0.3-1mg/mL, the centrifugal rotational speed in the third step is 8000-14000r/min, and the centrifugal time is 35-80min.
7. A high load-bearing high-strength nylon composite for fan slip damping as claimed in claim 3, wherein S303 dwell time is 10-15S.
8. The high-load-bearing high-strength nylon composite material for sliding damping of a fan according to claim 1, wherein the particle size of heavy calcium or heavy crystal powder is 1-10 μm, and the crystallinity is 80-90%.
9. The nylon composite material with high bearing capacity and high strength for sliding damping of fans according to claim 1, wherein the lubricant is one or a combination of more of polytetrafluoroethylene, silicone lubricant and paraffin.
10. The nylon composite with high load capacity and high strength for sliding damping of fans according to claim 1, wherein the antioxidant is one or a combination of more of 2, 6-di-tert-butyl-p-cresol, isopropyl phenol or phosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311313056.8A CN117801507A (en) | 2023-10-11 | 2023-10-11 | High-bearing high-strength nylon composite material for sliding damping of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311313056.8A CN117801507A (en) | 2023-10-11 | 2023-10-11 | High-bearing high-strength nylon composite material for sliding damping of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117801507A true CN117801507A (en) | 2024-04-02 |
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