CN116606501A - High-durability and wear-resistant injection molding part special for household appliance base and production process thereof - Google Patents
High-durability and wear-resistant injection molding part special for household appliance base and production process thereof Download PDFInfo
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 34
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims description 36
- 239000002113 nanodiamond Substances 0.000 claims description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 27
- 239000002041 carbon nanotube Substances 0.000 claims description 27
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 27
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 24
- 239000007795 chemical reaction product Substances 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 239000012153 distilled water Substances 0.000 claims description 16
- 239000012065 filter cake Substances 0.000 claims description 16
- 238000001291 vacuum drying Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 13
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 claims description 12
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 12
- 239000008187 granular material Substances 0.000 claims description 12
- 239000002244 precipitate Substances 0.000 claims description 12
- 239000006228 supernatant Substances 0.000 claims description 12
- ZXDDPOHVAMWLBH-UHFFFAOYSA-N 2,4-Dihydroxybenzophenone Chemical compound OC1=CC(O)=CC=C1C(=O)C1=CC=CC=C1 ZXDDPOHVAMWLBH-UHFFFAOYSA-N 0.000 claims description 10
- 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 10
- 239000004698 Polyethylene Substances 0.000 claims description 10
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 10
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 10
- 235000013539 calcium stearate Nutrition 0.000 claims description 10
- 239000008116 calcium stearate Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- -1 polyethylene Polymers 0.000 claims description 10
- 229920000573 polyethylene Polymers 0.000 claims description 10
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 9
- 229910017604 nitric acid Inorganic materials 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- QOSSAOTZNIDXMA-UHFFFAOYSA-N Dicylcohexylcarbodiimide Chemical compound C1CCCCC1N=C=NC1CCCCC1 QOSSAOTZNIDXMA-UHFFFAOYSA-N 0.000 claims description 6
- 235000019441 ethanol Nutrition 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 3
- 238000000967 suction filtration Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 11
- 239000002245 particle Substances 0.000 description 3
- 238000003828 vacuum filtration Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the field of injection molding, in particular to a special injection molding for a high-durability wear-resistant household appliance base and a production process thereof, which solve the problems that the existing household appliance base injection molding is poor in wear resistance and short in service life due to easy wear; in the production process, PP resin and ABS resin are used as main raw materials, and the hardness and the surface smoothness of the composite wear-resistant powder can be improved after the composite wear-resistant powder is added into the composite wear-resistant powder, so that the friction coefficient of the composite wear-resistant powder is reduced, and the wear resistance of an injection molding piece special for a household appliance base is improved.
Description
Technical Field
The invention relates to the field of injection molding, in particular to a high-durability and wear-resistant injection molding special for a household appliance base and a production process thereof.
Background
The injection molding part refers to various injection molding products produced by an injection molding machine, including various packages, parts and the like, when some household appliances are produced and used at present, plastic parts and the like of the household appliances are required to be subjected to injection molding processing, and the injection molding part is widely applied to electronic appliances such as refrigerators, televisions, washing machines, air conditioners, computers, copying machines and the like, and a household appliance base is the part which is most in contact with the ground, rubs with the ground during movement, and causes serious abrasion.
How to improve the existing household appliance base injection molding piece to have poor wear resistance and short service life caused by easy wear of the household appliance base injection molding piece is a key of the invention, so that a special injection molding piece for a high-durability and wear-resistant household appliance base and a production process thereof are needed to solve the problems.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a high-durability and wear-resistant injection molding piece special for a household appliance base and a production process thereof: the PP resin, the ABS resin, the composite wear-resistant powder, the polyethylene wax, the calcium stearate, the 2, 6-di-tert-butyl-p-cresol and the 2, 4-dihydroxybenzophenone are added into a mixer to be mixed and stirred uniformly to obtain a mixture, the mixture is added into a double-screw extruder to be melt extruded, and the mixture is cooled and granulated to obtain wear-resistant granules, and the wear-resistant granules are injection molded into an injection mold of a household appliance base to obtain the special injection molding piece for the high-durability wear-resistant household appliance base, so that the problems that the existing injection molding piece for the household appliance base is poor in wear resistance and the household appliance base is easy to wear, so that the service life of the injection molding piece is short are solved.
The aim of the invention can be achieved by the following technical scheme:
a production process of a high-durability and wear-resistant injection molding piece special for a household appliance base comprises the following steps:
step one: 55-65 parts of PP resin, 18-26 parts of ABS resin, 12-36 parts of composite wear-resistant powder, 1.2-2.5 parts of polyethylene wax, 1.8-2.4 parts of calcium stearate, 0.1-0.9 part of 2, 6-di-tert-butyl-p-cresol and 0.3-0.7 part of 2, 4-dihydroxybenzophenone are weighed according to parts by weight for standby;
step two: adding PP resin, ABS resin, composite wear-resistant powder, polyethylene wax, calcium stearate, 2, 6-di-tert-butyl-p-cresol and 2, 4-dihydroxybenzophenone into a mixer, and uniformly mixing and stirring to obtain a mixture;
step three: adding the mixture into a double-screw extruder for melt extrusion, and cooling and granulating to obtain wear-resistant granules;
step four: and (3) injecting the wear-resistant granules into an injection mold of the household appliance base to obtain the special injection molding piece for the high-durability wear-resistant household appliance base.
As a further scheme of the invention: the composite wear-resistant powder is prepared by the following steps:
step a1: adding carbon nano tube, concentrated nitric acid and concentrated sulfuric acid into a three-neck flask with a stirrer and a thermometer, stirring and reacting for 20-30h at the temperature of 80-85 ℃ and the stirring rate of 500-600r/min, cooling the reaction product to room temperature after the reaction is finished, adding the reaction product into distilled water, stirring and reacting for 10-15min, standing and settling, removing supernatant, washing precipitate with distilled water for 3-5 times, vacuum filtering, placing filter cake in a vacuum drying oven, and drying for 10-15h at the temperature of 80-85 ℃ to obtain carboxylated carbon nano tube;
step a2: placing nano diamond in a vacuum drying oven, drying at 90-100 ℃ for 10-15h, cooling to room temperature, adding the nano diamond into a three-neck flask provided with a stirrer, a thermometer and a constant pressure dropping funnel, adding absolute ethyl alcohol, stirring at 55-60 ℃ and a stirring rate of 500-600r/min for reacting for 1-2h, adding 3-aminopropyl triethoxysilane solution dropwise while stirring, controlling the dropping rate to be 1-2 drops/s, heating to 80-85 ℃ after the dripping is finished, continuing stirring for reacting for 4-5h, cooling the reaction product to room temperature after the reaction is finished, standing for sedimentation, removing supernatant, washing precipitate with distilled water for 3-5 times, vacuum suction filtering, placing a filter cake in the vacuum drying oven, and drying at 100-110 ℃ for 2-3h to obtain modified nano diamond;
step a3: adding carboxylated carbon nano tube, modified nano diamond, dicyclohexylcarbodiimide, 4-dimethylaminopyridine and anhydrous tetrahydrofuran into a three-neck flask provided with a stirrer, a thermometer and an air duct, performing ultrasonic treatment for 1-1.5 hours under the condition of 25-30 ℃ and ultrasonic frequency of 45-55kHz, introducing nitrogen for protection, stirring at the temperature of 45-55 ℃ and stirring speed of 500-600r/min for reacting for 20-30 hours, cooling the reaction product to room temperature after the reaction is finished, standing for sedimentation, removing supernatant, washing the precipitate with distilled water for 3-5 times, performing vacuum suction filtration, and placing a filter cake into a vacuum drying oven for drying for 20-25 hours under the condition of 80-85 ℃ to obtain the composite refractory powder.
As a further scheme of the invention: the dosage ratio of the carbon nano tube to the concentrated nitric acid to the concentrated sulfuric acid in the step a1 is 1g:10-15mL:10-15mL, wherein the mass fraction of the concentrated nitric acid is 65-67%, and the mass fraction of the concentrated sulfuric acid is 95-98%.
As a further scheme of the invention: the usage ratio of the nanodiamond to the absolute ethyl alcohol to the 3-aminopropyl triethoxysilane solution in the step a2 is 10g:120-150mL:25-30mL of 3-aminopropyl triethoxysilane solution, 3-aminopropyl triethoxysilane according to 1-4g:12mL of the solution formed by dissolving the solution in ethanol, wherein the volume fraction of the ethanol solution is 50-70%.
As a further scheme of the invention: the dosage ratio of the carboxylated carbon nano tube, the modified nano diamond, the dicyclohexylcarbodiimide, the 4-dimethylaminopyridine and the anhydrous tetrahydrofuran in the step a3 is 10g:1-10g:3-6g:1-3g:150-180mL.
As a further scheme of the invention: the high-durability and wear-resistant injection molding piece special for the household appliance base is prepared according to the production process of the high-durability and wear-resistant injection molding piece special for the household appliance base.
The invention has the beneficial effects that:
the invention relates to a special injection molding of a high-durability wear-resistant household appliance base and a production process thereof, wherein PP resin, ABS resin, composite wear-resistant powder, polyethylene wax, calcium stearate, 2, 6-di-tert-butyl-p-cresol and 2, 4-dihydroxybenzophenone are added into a mixer to be mixed and stirred uniformly to obtain a mixture, the mixture is added into a double-screw extruder to be melt extruded, and the mixture is cooled and granulated to obtain wear-resistant granules, and the wear-resistant granules are injected into an injection mold of the household appliance base to be injection molded, so that the special injection molding of the high-durability wear-resistant household appliance base is obtained; in the production process, PP resin and ABS resin are used as main raw materials, and the hardness and the surface smoothness of the composite wear-resistant powder can be improved after the composite wear-resistant powder is added into the PP resin and the ABS resin, so that the friction coefficient of the composite wear-resistant powder is reduced, and the wear resistance of an injection molding piece special for a household appliance base is improved;
in the process of preparing the special injection molding piece for the high-durability and wear-resistant household appliance base, firstly, the carbon nano tube is treated by concentrated nitric acid and concentrated sulfuric acid, impurities of the carbon nano tube are removed, a plurality of protrusions and depressions are formed on the surface of the carbon nano tube, the roughness and the specific surface area of the carbon nano tube are increased, meanwhile, carboxyl groups are introduced to be connected to the surface of the carbon nano tube to obtain the carboxylated carbon nano tube, siloxane on 3-aminopropyl triethoxysilane is hydrolyzed to form silanol and then is condensed with hydroxyl groups on the nano diamond, so that the particle surface of the nano diamond is connected, the dispersibility of the nano diamond is increased, agglomeration of the nano diamond is avoided, amino groups are introduced to obtain modified nano diamond, then the amino groups on the modified nano diamond are subjected to esterification reaction with carboxyl groups on the carboxylated carbon nano tube, the modified nano diamond is wrapped on the surface of the carboxylated carbon nano tube, the dispersibility of the modified nano diamond is good, and the carboxylated carbon nano tube is wrapped, so that the dispersibility of the prepared composite wear-resistant powder can be uniformly dispersed in PP resin and ABS resin, and the composite wear-resistant powder has the advantages of being improved in that the particle diameter of the nano tube is reduced, and the special injection molding piece is prepared, and the wear-resistant property of the special injection molding piece is improved, and the wear-resistant property of the particle size of the nano diamond is reduced, and the special injection molding piece is improved, and the wear-resistant property is improved, and the service life of the wear-resistant grade is improved.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, 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 embodiment is a preparation method of a composite wear-resistant powder, comprising the following steps:
step a1: adding 1g of carbon nano tube, 10mL of concentrated nitric acid with the mass fraction of 65% and 10mL of concentrated sulfuric acid with the mass fraction of 95% into a three-neck flask with a stirrer and a thermometer, stirring and reacting for 20 hours under the condition that the temperature is 80 ℃ and the stirring rate is 500 r/min, cooling the reaction product to room temperature after the reaction is finished, adding the reaction product into distilled water, stirring and reacting for 10 min, standing and settling, removing supernatant, washing the precipitate with distilled water for 3 times, vacuum-pumping and filtering, placing a filter cake into a vacuum drying box, and drying for 10 hours under the condition that the temperature is 80 ℃ to obtain carboxylated carbon nano tubes;
step a2: 10g of nano diamond is placed in a vacuum drying oven, dried for 10 hours at the temperature of 90 ℃, cooled to room temperature, added into a three-neck flask provided with a stirrer, a thermometer and a constant pressure dropping funnel, then 120mL of absolute ethyl alcohol is added, stirred and reacted for 1 hour at the temperature of 55 ℃ and the stirring rate of 500 r/min, and then 25mL of 3-aminopropyl triethoxysilane is added dropwise while stirring according to 1g:12mL of 3-aminopropyl triethoxysilane solution formed by dissolving ethanol solution with the volume fraction of 50 percent is controlled to have the dropping speed of 1 drop/s, the reaction product is continuously stirred for 4 hours under the condition of heating to 80 ℃ after the dropping is finished, the reaction product is cooled to room temperature after the reaction is finished, then the reaction product is settled, the supernatant is removed, the precipitate is washed for 3 times by distilled water, then the vacuum filtration is carried out, a filter cake is placed in a vacuum drying box, and the filter cake is dried for 2 hours under the condition of 100 ℃ to obtain the modified nano diamond;
step a3: 10g of carboxylated carbon nano tube, 1g of modified nano diamond, 3g of dicyclohexylcarbodiimide, 1g of 4-dimethylaminopyridine and 150mL of anhydrous tetrahydrofuran are added into a three-neck flask provided with a stirrer, a thermometer and an air duct, ultrasonic treatment is carried out for 1h under the condition that the temperature is 25 ℃ and the ultrasonic frequency is 45kHz, then nitrogen protection is introduced, stirring reaction is carried out for 20h under the condition that the temperature is 45 ℃ and the stirring speed is 500 r/min, reaction products are cooled to room temperature after the reaction is finished, then standing and settling are carried out, supernatant liquid is removed, precipitate is washed for 3 times by distilled water, then vacuum suction filtration is carried out, filter cakes are placed in a vacuum drying oven, and the filter cakes are dried for 20h under the condition that the temperature is 80 ℃ to obtain composite powder-resistant bodies.
Example 2:
the embodiment is a preparation method of a composite wear-resistant powder, comprising the following steps:
step a1: adding 1g of carbon nano tube, 15mL of concentrated nitric acid with the mass fraction of 67% and 15mL of concentrated sulfuric acid with the mass fraction of 98% into a three-neck flask with a stirrer and a thermometer, stirring and reacting for 30 hours under the condition that the temperature is 85 ℃ and the stirring rate is 600r/min, cooling the reaction product to room temperature after the reaction is finished, adding the reaction product into distilled water, stirring and reacting for 15min, standing and settling, removing supernatant, washing the precipitate with distilled water for 5 times, vacuum-pumping and filtering, placing a filter cake into a vacuum drying box, and drying for 15 hours under the condition that the temperature is 85 ℃ to obtain carboxylated carbon nano tubes;
step a2: 10g of nano diamond is placed in a vacuum drying oven, dried for 15h at the temperature of 100 ℃, cooled to room temperature, added into a three-neck flask provided with a stirrer, a thermometer and a constant pressure dropping funnel, then 150mL of absolute ethyl alcohol is added, stirred and reacted for 2h at the temperature of 60 ℃ and the stirring rate of 600r/min, and then 30mL of 3-aminopropyl triethoxysilane is added dropwise while stirring according to 4g:12mL of 3-aminopropyl triethoxysilane solution formed by dissolving ethanol solution with the volume fraction of 70 percent is controlled to have the dropping speed of 2 drops/s, the reaction product is continuously stirred for 5 hours under the condition of heating to 85 ℃ after the dropping is finished, the reaction product is cooled to room temperature after the reaction is finished, then the reaction product is settled, the supernatant is removed, the precipitate is washed for 5 times by distilled water, then the vacuum filtration is carried out, a filter cake is placed in a vacuum drying box, and the filter cake is dried for 3 hours under the condition of 110 ℃ to obtain the modified nano diamond;
step a3: 10g of carboxylated carbon nano tube, 10g of modified nano diamond, 6g of dicyclohexylcarbodiimide, 3g of 4-dimethylaminopyridine and 180mL of anhydrous tetrahydrofuran are added into a three-neck flask provided with a stirrer, a thermometer and an air duct, ultrasonic treatment is carried out for 1.5h under the condition that the temperature is 30 ℃ and the ultrasonic frequency is 55kHz, then nitrogen protection is introduced, stirring reaction is carried out for 30h under the condition that the temperature is 55 ℃ and the stirring speed is 600r/mi < n >, the reaction product is cooled to room temperature after the reaction is finished, then standing and settling are carried out, the supernatant is removed, the precipitate is washed 5 times by distilled water, then vacuum filtration is carried out, a filter cake is placed in a vacuum drying box, and the filter cake is dried for 25h under the condition that the temperature is 85 ℃ to obtain the composite powder-resistant body.
Example 3:
the embodiment is a production process of a special injection molding piece for a high-durability wear-resistant household appliance base, comprising the following steps of:
step 31: preparing a composite refractory powder for later use according to the method of example 1;
step 32: 55 parts of PP resin, 18 parts of ABS resin, 12 parts of composite wear-resistant powder, 1.2 parts of polyethylene wax, 1.8 parts of calcium stearate, 0.1 part of 2, 6-di-tert-butyl-p-cresol and 0.3 part of 2, 4-dihydroxybenzophenone are weighed according to parts by weight for standby;
step 33: adding PP resin, ABS resin, composite wear-resistant powder, polyethylene wax, calcium stearate, 2, 6-di-tert-butyl-p-cresol and 2, 4-dihydroxybenzophenone into a mixer, and uniformly mixing and stirring to obtain a mixture;
step 34: adding the mixture into a double-screw extruder for melt extrusion, and cooling and granulating to obtain wear-resistant granules;
step 35: and (3) injecting the wear-resistant granules into an injection mold of the household appliance base to obtain the special injection molding piece for the high-durability wear-resistant household appliance base.
Example 4:
the embodiment is a production process of a special injection molding piece for a high-durability wear-resistant household appliance base, comprising the following steps of:
step 41: composite refractory powder was prepared as in example 2 for use;
step 42: 65 parts of PP resin, 26 parts of ABS resin, 36 parts of composite wear-resistant powder, 2.5 parts of polyethylene wax, 2.4 parts of calcium stearate, 0.9 part of 2, 6-di-tert-butyl-p-cresol and 0.7 part of 2, 4-dihydroxybenzophenone are weighed according to parts by weight for standby;
step 43: adding PP resin, ABS resin, composite wear-resistant powder, polyethylene wax, calcium stearate, 2, 6-di-tert-butyl-p-cresol and 2, 4-dihydroxybenzophenone into a mixer, and uniformly mixing and stirring to obtain a mixture;
step 44: adding the mixture into a double-screw extruder for melt extrusion, and cooling and granulating to obtain wear-resistant granules;
step 45: and (3) injecting the wear-resistant granules into an injection mold of the household appliance base to obtain the special injection molding piece for the high-durability wear-resistant household appliance base.
Comparative example 1:
comparative example 1 differs from example 4 in that no composite refractory powder is added.
Comparative example 2:
comparative example 2 differs from example 4 in that carbon nanotubes are used instead of the composite refractory powder.
Comparative example 3:
comparative example 3 differs from example 4 in that nanodiamond was used instead of the composite refractory powder.
The performances of the special injection-molded parts for the abrasion-resistant home appliance bases of examples 3 to 4 and comparative examples 1 to 3 were examined, and the examination results are shown in the following table:
| sample of | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Shore D hardness | 96 | 103 | 52 | 83 | 85 |
| Coefficient of friction | 0.052 | 0.039 | 0.31 | 0.094 | 0.088 |
Referring to the above table data, according to the comparison of examples 3-4 and comparative examples 1-3, it can be known that the addition of carbon nanotubes, nanodiamonds and the composite wear-resistant powder can improve the hardness and wear resistance of the injection molding member dedicated to the base of the wear-resistant home appliance, wherein the composite wear-resistant powder has better lifting effect on the injection molding member dedicated to the base of the wear-resistant home appliance.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (6)
1. The production process of the injection molding piece special for the high-durability and wear-resistant household appliance base is characterized by comprising the following steps of:
step one: 55-65 parts of PP resin, 18-26 parts of ABS resin, 12-36 parts of composite wear-resistant powder, 1.2-2.5 parts of polyethylene wax, 1.8-2.4 parts of calcium stearate, 0.1-0.9 part of 2, 6-di-tert-butyl-p-cresol and 0.3-0.7 part of 2, 4-dihydroxybenzophenone are weighed according to parts by weight for standby;
step two: adding PP resin, ABS resin, composite wear-resistant powder, polyethylene wax, calcium stearate, 2, 6-di-tert-butyl-p-cresol and 2, 4-dihydroxybenzophenone into a mixer, and uniformly mixing and stirring to obtain a mixture;
step three: adding the mixture into a double-screw extruder for melt extrusion, and cooling and granulating to obtain wear-resistant granules;
step four: and (3) injecting the wear-resistant granules into an injection mold of the household appliance base to obtain the special injection molding piece for the high-durability wear-resistant household appliance base.
2. The process for producing the injection molding special for the high-durability and wear-resistant household appliance base, as claimed in claim 1, is characterized in that the composite wear-resistant powder is prepared by the following steps:
step a1: adding carbon nano tube, concentrated nitric acid and concentrated sulfuric acid into a three-neck flask with a stirrer and a thermometer, stirring at 80-85 ℃ and stirring speed of 500-600r/min for reaction for 20-30h, cooling the reaction product to room temperature after the reaction is finished, adding the reaction product into distilled water for stirring reaction for 10-15min, standing for settling, removing supernatant, washing the precipitate with distilled water for 3-5 times, vacuum-filtering, placing the filter cake in a vacuum drying box, and drying at 80-85 ℃ for 10-15h to obtain carboxylated carbon nano tube;
step a2: placing nano diamond in a vacuum drying oven, drying at 90-100 ℃ for 10-15h, cooling to room temperature, adding the nano diamond into a three-neck flask provided with a stirrer, a thermometer and a constant pressure dropping funnel, adding absolute ethyl alcohol, stirring at 55-60 ℃ and a stirring rate of 500-600r/min for reacting for 1-2h, adding 3-aminopropyl triethoxysilane solution dropwise while stirring, controlling the dropping rate to be 1-2 drops/s, heating to 80-85 ℃ after the dripping is finished, continuing stirring for reacting for 4-5h, cooling the reaction product to room temperature after the reaction is finished, standing for settling, removing supernatant, washing precipitate with distilled water for 3-5 times, vacuum suction filtering, placing a filter cake in the vacuum drying oven, and drying at 100-110 ℃ for 2-3h to obtain modified nano diamond;
step a3: adding carboxylated carbon nano tube, modified nano diamond, dicyclohexylcarbodiimide, 4-dimethylaminopyridine and anhydrous tetrahydrofuran into a three-neck flask provided with a stirrer, a thermometer and an air duct, performing ultrasonic treatment for 1-1.5 hours under the condition of 25-30 ℃ and ultrasonic frequency of 45-55kHz, introducing nitrogen for protection, stirring at 45-55 ℃ and stirring speed of 500-600r/min for reacting for 20-30 hours, cooling the reaction product to room temperature after the reaction is finished, standing for sedimentation, removing supernatant, washing the precipitate with distilled water for 3-5 times, performing vacuum suction filtration, placing a filter cake in a vacuum drying oven, and drying at 80-85 ℃ for 20-25 hours to obtain the composite refractory powder.
3. The process for producing the injection molding special for the high-durability and wear-resistant household appliance base according to claim 1, wherein the dosage ratio of the carbon nano tube to the concentrated nitric acid to the concentrated sulfuric acid in the step a1 is 1g:10-15mL:10-15mL, wherein the mass fraction of the concentrated nitric acid is 65-67%, and the mass fraction of the concentrated sulfuric acid is 95-98%.
4. The process for producing the injection molding special for the high-durability and wear-resistant household appliance base according to claim 1, wherein the usage ratio of the nanodiamond, the absolute ethyl alcohol and the 3-aminopropyl triethoxysilane solution in the step a2 is 10g:120-150mL:25-30mL of 3-aminopropyl triethoxysilane solution, 3-aminopropyl triethoxysilane according to 1-4g:12mL of the solution formed by dissolving the solution in ethanol, wherein the volume fraction of the ethanol solution is 50-70%.
5. The process for producing the injection molding special for the high-durability and wear-resistant household appliance base, as claimed in claim 1, wherein the dosage ratio of the carboxylated carbon nanotubes, the modified nanodiamond, the dicyclohexylcarbodiimide, the 4-dimethylaminopyridine and the anhydrous tetrahydrofuran in the step a3 is 10g:1-10g:3-6g:1-3g:150-180mL.
6. The high-durability and wear-resistant injection molding special for the household appliance base is characterized in that the high-durability and wear-resistant injection molding special for the household appliance base is prepared according to the production process of the high-durability and wear-resistant injection molding special for the household appliance base, which is disclosed in any one of claims 1 to 5.
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| CN104830015A (en) * | 2015-05-27 | 2015-08-12 | 东莞亲亲我实业有限公司 | High wear resistant environment-friendly intelligence toy and production method thereof |
| CN105778392A (en) * | 2016-03-21 | 2016-07-20 | 东莞职业技术学院 | Halogen-free flame-retardant electroconductive wear-resistant ABS/PP composite material and preparation method thereof |
| CN107459771A (en) * | 2016-06-03 | 2017-12-12 | 南京中赢纳米新材料有限公司 | The preparation method of Nano diamond and functionalized carbon fiber reinforced epoxy composite |
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