CN112111105A - High strength power support - Google Patents
High strength power support Download PDFInfo
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- CN112111105A CN112111105A CN202010884145.8A CN202010884145A CN112111105A CN 112111105 A CN112111105 A CN 112111105A CN 202010884145 A CN202010884145 A CN 202010884145A CN 112111105 A CN112111105 A CN 112111105A
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- -1 polypropylene Polymers 0.000 claims abstract description 36
- 239000004743 Polypropylene Substances 0.000 claims abstract description 35
- 229920001155 polypropylene Polymers 0.000 claims abstract description 35
- 239000002994 raw material Substances 0.000 claims abstract description 27
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000002360 preparation method Methods 0.000 claims abstract description 22
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 18
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229920002678 cellulose Polymers 0.000 claims abstract description 15
- 239000001913 cellulose Substances 0.000 claims abstract description 15
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 15
- 229920005604 random copolymer Polymers 0.000 claims abstract description 13
- 229920003180 amino resin Polymers 0.000 claims abstract description 12
- 239000003822 epoxy resin Substances 0.000 claims abstract description 12
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 12
- 239000004952 Polyamide Substances 0.000 claims abstract description 11
- 229920002301 cellulose acetate Polymers 0.000 claims abstract description 11
- 229920002647 polyamide Polymers 0.000 claims abstract description 11
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 229920005990 polystyrene resin Polymers 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000002270 dispersing agent Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 10
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 9
- 239000005977 Ethylene Substances 0.000 claims description 9
- 238000005660 chlorination reaction Methods 0.000 claims description 9
- 239000000178 monomer Substances 0.000 claims description 9
- 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 7
- 239000004209 oxidized polyethylene wax Substances 0.000 claims description 6
- 235000013873 oxidized polyethylene wax Nutrition 0.000 claims description 6
- DCXXMTOCNZCJGO-UHFFFAOYSA-N tristearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 claims description 6
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 4
- 239000008116 calcium stearate Substances 0.000 claims description 4
- 235000013539 calcium stearate Nutrition 0.000 claims description 4
- AYEKOFBPNLCAJY-UHFFFAOYSA-O thiamine pyrophosphate Chemical compound CC1=C(CCOP(O)(=O)OP(O)(O)=O)SC=[N+]1CC1=CN=C(C)N=C1N AYEKOFBPNLCAJY-UHFFFAOYSA-O 0.000 claims description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 abstract description 8
- 238000003756 stirring Methods 0.000 description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 7
- 238000005453 pelletization Methods 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000005010 epoxy-amino resin Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 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
- 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
- C08L23/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Reinforced Plastic Materials (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a high-strength power supply bracket which comprises the following raw materials in parts by weight: 80-120 parts of random copolymer polypropylene, 10-20 parts of epoxy resin, 15-25 parts of amino resin, 4-10 parts of polyamide, 2-5 parts of chlorinated polypropylene, 1-2 parts of ethanolamine, 1-3 parts of dibutyl phthalate, 15-25 parts of reinforcing fiber, 1-5 parts of cellulose acetate micropowder, 15-30 parts of polystyrene resin, 1-2 parts of dispersing agent and 1-2 parts of antioxidant. In the preparation process of the reinforced fiber, graphene, carboxylated cellulose and water are mixed, evaporated, added with gamma-aminopropyl-trimethoxy silicon, stirred at 70-80 ℃, filtered, washed, dried and crushed to obtain the reinforced fiber. The invention discloses a preparation method of the high-strength power supply bracket, which comprises the following steps: mixing the raw materials, feeding the mixture into a double-screw extruder, blending, extruding, cooling, granulating, and performing injection molding at the temperature of 190 ℃ to obtain the high-strength power supply bracket.
Description
Technical Field
The invention relates to the technical field of power supply supports, in particular to a high-strength power supply support and a preparation method thereof.
Background
The power supply is used as an electronic element, generates heat in the long-term use process, is usually exposed when being placed on the floor or other places, is easy to drop from the height or be impacted by other hard objects, and has great influence on the service life of the power supply.
Plastic products have indispensable status in people's daily life, polypropylene is a nontoxic plastics, have higher heat resistance and good physical properties, use extensively, the mode that present power generally adopts the couple through the support is fixed in the box, it is firm to require, avoid droing under the environment of transportation or vibrations, but the support that adopts polypropylene plastics has impact resistance poor at the in-process of installation, the technical problem that tensile strength is low, use easily to damage often, and it is inconvenient when equipment maintenance and dismouting, the construction degree of difficulty is big, cause very big efficiency of construction puzzlement, the cost is increased.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a high-strength power supply bracket and a preparation method thereof.
A high-strength power supply bracket comprises the following raw materials in parts by weight: 80-120 parts of random copolymer polypropylene, 10-20 parts of epoxy resin, 15-25 parts of amino resin, 4-10 parts of polyamide, 2-5 parts of chlorinated polypropylene, 1-2 parts of ethanolamine, 1-3 parts of dibutyl phthalate, 15-25 parts of reinforcing fiber, 1-5 parts of cellulose acetate micropowder, 15-30 parts of polystyrene resin, 1-2 parts of dispersing agent and 1-2 parts of antioxidant.
Preferably, the ethylene monomer content of the random copolymer polypropylene is < 5%.
Preferably, the chlorinated polypropylene is a low chlorinated polypropylene having a degree of chlorination of 21.5 to 24%.
Preferably, in the preparation process of the reinforced fiber, graphene, carboxylated cellulose and water are mixed, evaporated, gamma-aminopropyl-trimethoxy silicon is added, stirred at 70-80 ℃, filtered, washed, dried and crushed to obtain the reinforced fiber.
Preferably, in the preparation process of the reinforced fiber, the mass ratio of the graphene to the carboxylated cellulose to the gamma-aminopropyl-trimethoxy silicon is 2-4: 10-15: 30-50: 1-2.
Preferably, the reinforcing fibers are prepared by evaporation to a water content of 10-20 wt.%.
Preferably, the dispersant is at least one of glyceryl tristearate, calcium stearate, oxidized polyethylene wax and microcrystalline paraffin.
Preferably, the antioxidant is at least one of antioxidant BHT, antioxidant TNP, antioxidant TPP, antioxidant 1010 and antioxidant 264.
The preparation method of the high-strength power supply bracket comprises the following steps: mixing the raw materials, feeding the mixture into a double-screw extruder, blending and extruding, wherein the double-screw extrusion process conditions are as follows: a first area: 195 ℃ and 205 ℃; and a second zone: 200 ℃ and 210 ℃; and (3) three zones: 205 ℃ and 215 ℃; and (4) four areas: 220 ℃ and 230 ℃; and a fifth zone: 210-215 ℃; a sixth zone: 190 ℃ and 200 ℃; head temperature: 200 ℃ and 215 ℃; the rotating speed of the screw is as follows: cooling at 400-.
The technical effects of the invention are as follows:
chlorinated polypropylene is polar thermoplastic resin with chlorine atoms introduced to a polypropylene molecular chain, and the compatibility of the chlorinated polypropylene and ethanolamine is good, the chlorinated polypropylene and ethanolamine are compounded, on one hand, contained hydroxyl can form hydrogen bonds with strong polar carbonyl of polyamide, on the other hand, the compatibility of a polypropylene chain, random copolymerization polypropylene, epoxy resin and amino resin is good, and after melt extrusion, the organic blending system of the chlorinated polypropylene and ethanolamine composite material forms a stable product, and when higher tensile strength is kept, the impact strength is effectively improved;
because the hydroxyl reaction activity of the carboxylated cellulose is high, the carboxylated cellulose and the graphene are compounded and combined under the action of gamma-aminopropyl-trimethoxy silicon, the graphene is surrounded by the carboxylated cellulose, the dispersion stability of the carboxylated cellulose is better facilitated, the graphene is better dispersed in the random copolymer polypropylene, the epoxy resin and the amino resin, the impact resistance of the system is further improved, the two-dimensional layered graphene has huge specific surface area and mechanical property, and the two-dimensional layered graphene and the cellulose acetate micropowder act together, so that the rigidity and the toughness of the power supply bracket can be balanced, and the reinforcing effect is obvious.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A high strength power support, its raw materials include: 80kg of random copolymer polypropylene with the ethylene monomer content of less than 5 percent, 20kg of epoxy resin, 15kg of amino resin, 10kg of polyamide, 5kg of chlorinated polypropylene with the chlorination degree of 21.5 percent, 1kg of ethanolamine, 3kg of dibutyl phthalate, 15kg of reinforcing fiber, 5kg of cellulose acetate micropowder, 15kg of polystyrene resin, 0.5kg of microcrystalline wax, 1.5kg of calcium stearate and 10101 kg of antioxidant.
In the preparation process of the reinforced fiber, 4kg of graphene, 10kg of carboxylated cellulose and 50kg of water are mixed, stirred at a high speed of 10000r/min for 15min, evaporated until the water content is 10 wt%, 2kg of gamma-aminopropyl-trimethoxy silicon is added, stirred at 70 ℃ for 20min, the stirring speed is 300r/min, filtered, washed by acetone, dried and crushed to obtain the reinforced fiber.
The preparation method of the high-strength power supply bracket comprises the following steps: the raw materials are sent into a high-speed mixer to be stirred for 20min, the stirring speed is 1000r/min, the raw materials are sent into a double-screw extruder to be blended and then extruded, and the double-screw extrusion process conditions are as follows: a first area: 205 deg.C; and a second zone: 200 ℃; and (3) three zones: 215 ℃ of water; and (4) four areas: 220 ℃; and a fifth zone: 215 ℃ of water; a sixth zone: 190 ℃; head temperature: 215 ℃ of water; the rotating speed of the screw is as follows: and (4) cooling at 400r/min, pelletizing, and performing injection molding at 190 ℃ to obtain the high-strength power supply bracket.
Example 2
A high strength power support, its raw materials include: 120kg of random copolymer polypropylene with the ethylene monomer content of less than 5 percent, 10kg of epoxy resin, 25kg of amino resin, 4kg of polyamide, 2kg of chlorinated polypropylene with the chlorination degree of 24 percent, 2kg of ethanolamine, 1kg of dibutyl phthalate, 25kg of reinforcing fiber, 1kg of cellulose acetate micropowder, 30kg of polystyrene resin, 1kg of glyceryl tristearate and 2642 kg of antioxidant.
In the preparation process of the reinforced fiber, 2kg of graphene, 15kg of carboxylated cellulose and 30kg of water are mixed, stirred at a high speed of 12000r/min for 10min, evaporated until the water content is 20 wt%, 1kg of gamma-aminopropyl-trimethoxy silicon is added, stirred at 80 ℃ for 10min, the stirring speed is 500r/min, filtered, washed by acetone, dried and crushed to obtain the reinforced fiber.
The preparation method of the high-strength power supply bracket comprises the following steps: the raw materials are sent into a high-speed mixer to be stirred for 10min, the stirring speed is 1200r/min, the raw materials are sent into a double-screw extruder to be blended and then extruded, and the double-screw extrusion process conditions are as follows: a first area: 195 ℃; and a second zone: at 210 ℃; and (3) three zones: 205 deg.C; and (4) four areas: 230 ℃; and a fifth zone: at 210 ℃; a sixth zone: 200 ℃; head temperature: 200 ℃; the rotating speed of the screw is as follows: and cooling at 500r/min, pelletizing, and performing injection molding at 170 ℃ to obtain the high-strength power supply bracket.
Example 3
A high strength power support, its raw materials include: 90kg of random copolymer polypropylene with the ethylene monomer content of less than 5 percent, 18kg of epoxy resin, 18kg of amino resin, 8kg of polyamide, 4kg of chlorinated polypropylene with the chlorination degree of 22.3 percent, 1.2kg of ethanolamine, 2.5kg of dibutyl phthalate, 18kg of reinforcing fiber, 4kg of cellulose acetate micropowder, 20kg of polystyrene resin, 1.7kg of calcium stearate and 1.2kg of antioxidant TNP.
In the preparation process of the reinforced fiber, 3.5kg of graphene, 12kg of carboxylated cellulose and 45kg of water are mixed, stirred at a high speed of 10500r/min for 14min, evaporated until the water content is 12 wt%, added with 1.7kg of gamma-aminopropyl-trimethoxy silicon, stirred at 73 ℃ for 18min, and stirred at a speed of 350r/min, filtered, washed by acetone, dried and crushed to obtain the reinforced fiber.
The preparation method of the high-strength power supply bracket comprises the following steps: the raw materials are sent into a high-speed mixer to be stirred for 18min, the stirring speed is 1050r/min, the raw materials are sent into a double-screw extruder to be blended and then extruded, and the double-screw extrusion process conditions are as follows: a first area: 202 ℃; and a second zone: 203 ℃; and (3) three zones: 212 ℃; and (4) four areas: 224 ℃; and a fifth zone: 213 ℃; a sixth zone: 193 ℃; head temperature: at 210 ℃; the rotating speed of the screw is as follows: 420r/min, cooling, granulating, and performing injection molding at 185 ℃ to obtain the high-strength power supply bracket.
Example 4
A high strength power support, its raw materials include: 110kg of random copolymer polypropylene with the ethylene monomer content of less than 5 percent, 12kg of epoxy resin, 22kg of amino resin, 6kg of polyamide, 3kg of chlorinated polypropylene with the chlorination degree of 23.6 percent, 1.8kg of ethanolamine, 1.5kg of dibutyl phthalate, 22kg of reinforcing fiber, 2kg of cellulose acetate micropowder, 24kg of polystyrene resin, 1.3kg of oxidized polyethylene wax and 1.8kg of antioxidant TPP.
In the preparation process of the reinforced fiber, 2.5kg of graphene, 14kg of carboxylated cellulose and 35kg of water are mixed, stirred at a high speed of 11500r/min for 12min, evaporated until the water content is 18 wt%, added with 1.3kg of gamma-aminopropyl-trimethoxy silicon, stirred at 77 ℃ for 12min, the stirring speed is 450r/min, filtered, washed by acetone, dried and crushed to obtain the reinforced fiber.
The preparation method of the high-strength power supply bracket comprises the following steps: the raw materials are sent into a high-speed mixer to be stirred for 12min, the stirring speed is 1150r/min, the raw materials are sent into a double-screw extruder to be blended and then extruded, and the double-screw extrusion process conditions are as follows: a first area: 198 ℃; and a second zone: 207 deg.C; and (3) three zones: 208 ℃; and (4) four areas: 228 ℃; and a fifth zone: 211 ℃; a sixth zone: 197 deg.C; head temperature: 205 deg.C; the rotating speed of the screw is as follows: 480r/min, cooling, granulating, and performing injection molding at 175 ℃ to obtain the high-strength power supply bracket.
Example 5
A high strength power support, its raw materials include: 100kg of random copolymer polypropylene with the ethylene monomer content of less than 5 percent, 15kg of epoxy resin, 20kg of amino resin, 7kg of polyamide, 3.5kg of chlorinated polypropylene with the chlorination degree of 23.1 percent, 1.5kg of ethanolamine, 2kg of dibutyl phthalate, 20kg of reinforcing fiber, 3kg of cellulose acetate micropowder, 22kg of polystyrene resin, 1.5kg of oxidized polyethylene wax and 1.5kg of antioxidant BHT.
In the preparation process of the reinforced fiber, 3kg of graphene, 13kg of carboxylated cellulose and 40kg of water are mixed, stirred at a high speed of 11000r/min for 13min, evaporated until the water content is 15 wt%, added with 1.5kg of gamma-aminopropyl-trimethoxy silicon, stirred at 75 ℃ for 15min, and stirred at a stirring speed of 400r/min, filtered, washed by acetone, dried and crushed to obtain the reinforced fiber.
The preparation method of the high-strength power supply bracket comprises the following steps: the raw materials are sent into a high-speed mixer to be stirred for 15min, the stirring speed is 1100r/min, the raw materials are sent into a double-screw extruder to be blended and then extruded, and the double-screw extrusion process conditions are as follows: a first area: 200 ℃; and a second zone: 205 deg.C; and (3) three zones: at 210 ℃; and (4) four areas: 226 deg.C; and a fifth zone: 212 ℃; a sixth zone: 195 ℃; head temperature: 208 ℃; the rotating speed of the screw is as follows: and (4) cooling at 450r/min, pelletizing, and performing injection molding at 180 ℃ to obtain the high-strength power supply bracket.
Comparative example 1
A high strength power support, its raw materials include: 100kg of random copolymer polypropylene with the ethylene monomer content of less than 5 percent, 15kg of epoxy resin, 20kg of amino resin, 7kg of polyamide, 3.5kg of chlorinated polypropylene with the chlorination degree of 23.1 percent, 1.5kg of ethanolamine, 2kg of dibutyl phthalate, 3kg of cellulose acetate micropowder, 22kg of polystyrene resin, 1.5kg of oxidized polyethylene wax and 1.5kg of antioxidant BHT.
The preparation method of the high-strength power supply bracket comprises the following steps: the raw materials are sent into a high-speed mixer to be stirred for 15min, the stirring speed is 1100r/min, the raw materials are sent into a double-screw extruder to be blended and then extruded, and the double-screw extrusion process conditions are as follows: a first area: 200 ℃; and a second zone: 205 deg.C; and (3) three zones: at 210 ℃; and (4) four areas: 226 deg.C; and a fifth zone: 212 ℃; a sixth zone: 195 ℃; head temperature: 208 ℃; the rotating speed of the screw is as follows: and (4) cooling at 450r/min, pelletizing, and performing injection molding at 180 ℃ to obtain the high-strength power supply bracket.
Comparative example 2
A high strength power support, its raw materials include: 100kg of random copolymer polypropylene with the ethylene monomer content of less than 5 percent, 15kg of epoxy resin, 20kg of amino resin, 7kg of polyamide, 3.5kg of chlorinated polypropylene with the chlorination degree of 23.1 percent, 1.5kg of ethanolamine, 2kg of dibutyl phthalate, 20kg of carboxylated cellulose, 3kg of cellulose acetate micropowder, 22kg of polystyrene resin, 1.5kg of oxidized polyethylene wax and 1.5kg of antioxidant BHT.
The preparation method of the high-strength power supply bracket comprises the following steps: the raw materials are sent into a high-speed mixer to be stirred for 15min, the stirring speed is 1100r/min, the raw materials are sent into a double-screw extruder to be blended and then extruded, and the double-screw extrusion process conditions are as follows: a first area: 200 ℃; and a second zone: 205 deg.C; and (3) three zones: at 210 ℃; and (4) four areas: 226 deg.C; and a fifth zone: 212 ℃; a sixth zone: 195 ℃; head temperature: 208 ℃; the rotating speed of the screw is as follows: and (4) cooling at 450r/min, pelletizing, and performing injection molding at 180 ℃ to obtain the high-strength power supply bracket.
The high-strength power supply brackets obtained in example 5 and comparative examples 1-2 were subjected to mechanical property tests as follows:
testing the Vicat softening temperature according to the measurement of the Vicat Softening Temperature (VST) of the thermoplastic plastic GB/T1633-2000;
testing the impact strength according to the determination of the impact strength of the GB/T1843-2008 plastic cantilever beam;
testing the tensile strength and the elongation at break according to the determination of the tensile property of the GB/T1040.1-2018 plastics;
and testing the bending strength according to the measurement of the bending performance of the GB/T9341-.
The results are as follows:
| example 5 | Comparative example 1 | Comparative example 2 | |
| Vicat softening point, DEG C | 147.3 | 115.0 | 123.6 |
| Impact strength, kJ/m2 | 62 | 44 | 50 |
| Tensile strength, Mpa | 43 | 21 | 25 |
| Elongation at break,% | 81 | 62 | 55 |
| Flexural strength, Mpa | 52 | 29 | 34 |
From the above table, it can be seen that: the mechanical property of the power supply bracket obtained in the embodiment 5 is superior to that of the comparative example, and the Vicat softening point is higher than that of the comparative example, so that the power supply bracket obtained in the invention is proved to have excellent mechanical property, the rigidity and the toughness are balanced, and the reinforcing effect is obvious.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A high-strength power supply bracket is characterized by comprising the following raw materials in parts by weight: 80-120 parts of random copolymer polypropylene, 10-20 parts of epoxy resin, 15-25 parts of amino resin, 4-10 parts of polyamide, 2-5 parts of chlorinated polypropylene, 1-2 parts of ethanolamine, 1-3 parts of dibutyl phthalate, 15-25 parts of reinforcing fiber, 1-5 parts of cellulose acetate micropowder, 15-30 parts of polystyrene resin, 1-2 parts of dispersing agent and 1-2 parts of antioxidant.
2. The high strength power standoff as claimed in claim 1 wherein the random copolymer polypropylene has an ethylene monomer content of < 5%.
3. The high strength power cradle of claim 1, wherein the chlorinated polypropylene is a low chlorinated polypropylene having a degree of chlorination of 21.5-24%.
4. The high-strength power supply bracket according to claim 1, wherein in the preparation process of the reinforced fiber, the graphene, the carboxylated cellulose and water are mixed, evaporated, added with the gamma-aminopropyl-trimethoxy silicon, stirred at 70-80 ℃, filtered, washed, dried and crushed to obtain the reinforced fiber.
5. The high-strength power bracket according to claim 4, wherein during the preparation of the reinforcing fiber, the mass ratio of graphene, carboxylated cellulose, water and gamma-aminopropyl-trimethoxy silicon is 2-4: 10-15: 30-50: 1-2.
6. The high strength power stand of claim 4, wherein the reinforcing fiber is evaporated to a water content of 10-20 wt% during the preparation process.
7. The high strength power stent of claim 1, wherein the dispersant is at least one of glyceryl tristearate, calcium stearate, oxidized polyethylene wax, and microcrystalline paraffin.
8. The high strength power stent of claim 1, wherein the antioxidant is at least one of antioxidant BHT, antioxidant TNP, antioxidant TPP, antioxidant 1010, antioxidant 264.
9. A method for manufacturing a high strength power bracket as defined in any one of claims 1 to 8, comprising the steps of: mixing the raw materials, feeding the mixture into a double-screw extruder, blending and extruding, wherein the double-screw extrusion process conditions are as follows: a first area: 195 ℃ and 205 ℃; and a second zone: 200 ℃ and 210 ℃; and (3) three zones: 205 ℃ and 215 ℃; and (4) four areas: 220 ℃ and 230 ℃; and a fifth zone: 210-215 ℃; a sixth zone: 190 ℃ and 200 ℃; head temperature: 200 ℃ and 215 ℃; the rotating speed of the screw is as follows: cooling at 400-.
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