CN111961284A - Light high-strength air guide sleeve for light truck - Google Patents
Light high-strength air guide sleeve for light truck Download PDFInfo
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- CN111961284A CN111961284A CN202010868219.9A CN202010868219A CN111961284A CN 111961284 A CN111961284 A CN 111961284A CN 202010868219 A CN202010868219 A CN 202010868219A CN 111961284 A CN111961284 A CN 111961284A
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- polypropylene
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- 239000000835 fiber Substances 0.000 claims abstract description 49
- -1 polypropylene Polymers 0.000 claims abstract description 46
- 239000004743 Polypropylene Substances 0.000 claims abstract description 37
- 229920001155 polypropylene Polymers 0.000 claims abstract description 37
- 239000003607 modifier Substances 0.000 claims abstract description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 27
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000012661 block copolymerization Methods 0.000 claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 15
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 13
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 13
- 238000000498 ball milling Methods 0.000 claims abstract description 13
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 13
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 13
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000004698 Polyethylene Substances 0.000 claims abstract description 9
- 238000001354 calcination Methods 0.000 claims abstract description 9
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 9
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 9
- 239000008116 calcium stearate Substances 0.000 claims abstract description 9
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 claims abstract description 9
- 229920000573 polyethylene Polymers 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 8
- 238000005406 washing Methods 0.000 claims abstract description 8
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 5
- 239000000155 melt Substances 0.000 claims description 17
- 108010073771 Soybean Proteins Proteins 0.000 claims description 9
- 235000019710 soybean protein Nutrition 0.000 claims description 9
- 241000255789 Bombyx mori Species 0.000 claims description 8
- 241000382353 Pupa Species 0.000 claims description 8
- 239000005018 casein Substances 0.000 claims description 8
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 claims description 8
- 235000021240 caseins Nutrition 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 235000018102 proteins Nutrition 0.000 claims description 8
- 108090000623 proteins and genes Proteins 0.000 claims description 8
- 102000004169 proteins and genes Human genes 0.000 claims description 8
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 6
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 claims description 6
- 229920001046 Nanocellulose Polymers 0.000 claims description 5
- PRWJPWSKLXYEPD-UHFFFAOYSA-N 4-[4,4-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butan-2-yl]-2-tert-butyl-5-methylphenol Chemical compound C=1C(C(C)(C)C)=C(O)C=C(C)C=1C(C)CC(C=1C(=CC(O)=C(C=1)C(C)(C)C)C)C1=CC(C(C)(C)C)=C(O)C=C1C PRWJPWSKLXYEPD-UHFFFAOYSA-N 0.000 claims description 4
- 229920001400 block copolymer Polymers 0.000 claims description 2
- 229920005629 polypropylene homopolymer Polymers 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000007790 scraping Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 32
- 239000000243 solution Substances 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 6
- 238000001291 vacuum drying Methods 0.000 description 5
- 229920002678 cellulose Polymers 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003677 Sheet moulding compound Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000007704 transition Effects 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
- C08L23/12—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
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- 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
-
- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a light high-strength air guide sleeve for a light truck, which comprises the following raw materials in parts by weight: 100 parts of homopolymerized polypropylene, 20-30 parts of block copolymerization polypropylene, 30-40 parts of composite fiber, 10-18 parts of light modifier, 1-2 parts of maleic anhydride grafted polypropylene, 1-2 parts of polyethylene wax, 1-2 parts of calcium stearate, 1-2 parts of cross-linking agent and 1-2 parts of antioxidant. The preparation steps of the light modifier are as follows: uniformly mixing nano silicon dioxide and sawdust powder, drying at the temperature of 110-120 ℃ for 1-2h, calcining at the temperature of 500-560 ℃ for 10-20min under the protection of nitrogen, cooling to room temperature, ball-milling, adding into an ethanol solution, adding maleic anhydride, carrying out ultrasonic treatment at the temperature of 70-80 ℃ for 20-40min, filtering, washing and drying to obtain the light modifier. The air guide sleeve obtained by the invention is light in weight, and has high-efficiency pressure transmission, impact resistance and scraping resistance.
Description
Technical Field
The invention relates to the technical field of air guide hoods, in particular to a light high-strength air guide hood for a light truck.
Background
The air guide cover is an air guide device arranged on the top of a cab of a truck or a tractor and has the main functions of effectively reducing air resistance and fuel consumption when the truck runs at high speed.
It is known that when a pickup truck is operated at high speed, a large peel occurs from the front edge of the cab roof when the airflow on the cab meets the upper front part of the closed cab, and the air resistance coefficient is increased, and if a deflector is mounted on the cab roof to make a streamline transition between the cab and the cab, thereby guiding the airflow flowing through the upper part of the cab to "join" with the upper surface of the cab body, and making the airflow flow along the close place of the surface of the closed cab roof, so as to reduce the air resistance coefficient, it is necessary to mount a deflector on the pickup truck.
At present, the installation position of the air guide sleeve is positioned at the top of a cab and is exposed to the sun and the rain, so the selection of the material of the air guide sleeve directly determines the service life of the air guide sleeve. The air guide sleeve is manufactured through an SMC (sheet molding compound) molding process or directly injection molded, and the air guide sleeve obtained through direct injection molding of plastics can be recycled, but the product strength is weak, so that a solution is needed.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a light high-strength air guide sleeve for a light truck.
A light high-strength air guide sleeve for a light truck comprises the following raw materials in parts by weight: 100 parts of homopolymerized polypropylene, 20-30 parts of block copolymerization polypropylene, 30-40 parts of composite fiber, 10-18 parts of light modifier, 1-2 parts of maleic anhydride grafted polypropylene, 1-2 parts of polyethylene wax, 1-2 parts of calcium stearate, 1-2 parts of cross-linking agent and 1-2 parts of antioxidant.
Preferably, the melt index of the homopolymerized polypropylene is 20-26g/10min under the conditions of 230 ℃ and 2.16 kg.
Preferably, the melt index of the block copolymer polypropylene is 14 to 18g/10min at 230 ℃ under the condition of 2.16 kg.
Preferably, the composite fiber is at least one of polyborate short fiber, casein fiber, soybean protein fiber, silkworm pupa protein fiber and nano cellulose whisker.
Preferably, the composite fiber is prepared from polyborate short fiber, casein fiber, soybean protein fiber, silkworm pupa protein fiber and nano cellulose whisker in a mass ratio of 20-30: 2-10: 2-6: 1-5: 2-4.
Preferably, the crosslinking agent is dicumyl peroxide or t-butyl hydroperoxide.
Preferably, the antioxidant is at least one of antioxidant BHT, antioxidant CA and antioxidant 164.
Preferably, the light modifier is prepared by the following steps: uniformly mixing nano silicon dioxide and sawdust powder, drying at the temperature of 110-120 ℃ for 1-2h, calcining at the temperature of 500-560 ℃ for 10-20min under the protection of nitrogen, cooling to room temperature, ball-milling, adding into an ethanol solution, adding maleic anhydride, carrying out ultrasonic treatment at the temperature of 70-80 ℃ for 20-40min, filtering, washing and drying to obtain the light modifier.
Preferably, the mass fraction of the ethanol solution is 60-80%, and the mass ratio of the nano silicon dioxide, the saw powder, the ethanol solution and the maleic anhydride is 4-10: 20-40: 80-100: 1-2.
Preferably, the particles are ball milled to a particle size of 100 μm or less.
The technical effects of the invention are as follows:
in the light modifier used in the invention, nano silicon dioxide and sawdust powder are uniformly mixed and then dried, and then heat treatment is carried out in a calcining furnace, the nano silicon dioxide can be fully dispersed in carbonized sawdust powder, the carbonized sawdust powder has strong adsorption capacity, the nano silicon dioxide is fully adsorbed on the surface of the carbonized sawdust powder, the nano silicon dioxide and the carbonized sawdust powder are fully combined under the action of maleic anhydride, the problem that the light modifier is easy to agglomerate can be effectively solved under the synergistic effect, and the obtained light modifier has higher tensile strength and toughness.
Because the rigidity of the homopolymerized polypropylene is extremely high, and the block copolymerization polypropylene has good fluidity, the homopolymerized polypropylene and the light modifier are compounded, so the mutual dispersity is extremely strong under the action of the block copolymerization polypropylene, and meanwhile, the weight of the light modifier is extremely light, the weight of the air guide sleeve can be relatively reduced, the air guide sleeve is more suitable for light trucks and has higher tensile strength and impact strength, so that the air guide sleeve obtained by the invention is light in weight and has efficient pressure transmissibility, and in the production and processing process, the air guide sleeve has the characteristics of simple and convenient processing method, no need of modifying the existing processing equipment, low production cost and wide application range.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example 1
A lightweight high-strength air guide sleeve for a light truck comprises the following raw materials: 100kg of homopolymerized polypropylene, 20kg of block copolymerization polypropylene, 40kg of nano cellulose whisker, 10kg of light modifier, 2kg of maleic anhydride grafted polypropylene, 1kg of polyethylene wax, 2kg of calcium stearate, 1kg of dicumyl peroxide and 2kg of antioxidant CA.
Under the condition of 230 ℃ and 2.16kg, the melt index of the homopolymerized polypropylene is 20g/10min, and the melt index of the block copolymerization polypropylene is 18g/10 min.
The preparation steps of the light modifier are as follows: uniformly mixing 4kg of nano silicon dioxide and 40kg of sawdust powder, sending the mixture into a vacuum drying oven, drying the mixture for 2 hours at the temperature of 110 ℃, then carrying out heat treatment for 20 minutes at the temperature of 500 ℃ in a calcining furnace under the protection of nitrogen, cooling the mixture to room temperature, sending the mixture into a ball milling tank, carrying out ball milling until the particle size is less than or equal to 100 microns, adding the mixture into 80kg of ethanol solution with the mass fraction of 80%, adding 1kg of maleic anhydride, carrying out ultrasonic treatment for 20 minutes at the temperature of 80 ℃, filtering, washing and drying the mixture to obtain the light modifier.
Example 2
A lightweight high-strength air guide sleeve for a light truck comprises the following raw materials: 100kg of homopolymerized polypropylene, 30kg of block copolymerization polypropylene, 10kg of polyborate short fiber, 20kg of soybean protein fiber, 18kg of light modifier, 1kg of maleic anhydride grafted polypropylene, 2kg of polyethylene wax, 1kg of calcium stearate, 2kg of tert-butyl hydroperoxide and 1kg of antioxidant CA.
Under the condition of 230 ℃ and 2.16kg, the melt index of the homopolymerized polypropylene is 26g/10min, and the melt index of the block copolymerization polypropylene is 14g/10 min.
The preparation steps of the light modifier are as follows: uniformly mixing 10kg of nano silicon dioxide and 20kg of sawdust powder, feeding the mixture into a vacuum drying oven, drying the mixture for 1h at the temperature of 120 ℃, then carrying out heat treatment on the mixture for 10min at the temperature of 560 ℃ in a calcining furnace under the protection of nitrogen, cooling the mixture to room temperature, feeding the mixture into a ball milling tank, carrying out ball milling until the particle size is less than or equal to 100 mu m, adding the mixture into 100kg of ethanol solution with the mass fraction of 60%, adding 2kg of maleic anhydride, carrying out ultrasonic treatment at the temperature of 70 ℃ for 40min, filtering, washing and drying the mixture to obtain the light modifier.
Example 3
A lightweight high-strength air guide sleeve for a light truck comprises the following raw materials: 100kg of homopolymerized polypropylene, 22kg of block copolymerization polypropylene, 37kg of composite fiber, 12kg of light modifier, 1.7kg of maleic anhydride grafted polypropylene, 1.3kg of polyethylene wax, 1.8kg of calcium stearate, 1.3kg of dicumyl peroxide and 1641.6 kg of antioxidant.
Under the condition of 230 ℃ and 2.16kg, the melt index of the homopolymerized polypropylene is 22g/10min, and the melt index of the block copolymerization polypropylene is 17g/10 min.
The composite fiber is prepared from polyborate short fibers, casein fibers, soybean protein fibers, silkworm pupa protein fibers and nano-cellulose whiskers according to a mass ratio of 23: 8: 3: 4: 2.5.
The preparation steps of the light modifier are as follows: uniformly mixing 8kg of nano silicon dioxide and 25kg of sawdust powder, feeding the mixture into a vacuum drying oven, drying the mixture for 1.3h at the temperature of 118 ℃, then carrying out heat treatment for 12min at the temperature of 540 ℃ in a calcining furnace under the protection of nitrogen, cooling the mixture to room temperature, feeding the mixture into a ball milling tank, carrying out ball milling until the particle size is less than or equal to 100 mu m, adding the mixture into 95kg of ethanol solution with the mass fraction of 65%, adding 1.7kg of maleic anhydride, carrying out ultrasonic treatment for 35min at the temperature of 73 ℃, filtering, washing and drying the mixture to obtain the light modifier.
Example 4
A lightweight high-strength air guide sleeve for a light truck comprises the following raw materials: 100kg of homopolymerized polypropylene, 28kg of block copolymerization polypropylene, 33kg of composite fiber, 16kg of light modifier, 1.3kg of maleic anhydride grafted polypropylene, 1.7kg of polyethylene wax, 1.2kg of calcium stearate, 1.7kg of tert-butyl hydroperoxide and 1641.4 kg of antioxidant.
Under the condition of 230 ℃ and 2.16kg, the melt index of the homopolymerized polypropylene is 25g/10min, and the melt index of the block copolymerization polypropylene is 15g/10 min.
The composite fiber is prepared from polyborate short fibers, casein fibers, soybean protein fibers, silkworm pupa protein fibers and nano-cellulose whiskers according to the mass ratio of 27: 4: 5: 2: 3.5.
The preparation steps of the light modifier are as follows: uniformly mixing 6kg of nano silicon dioxide and 35kg of sawdust powder, feeding the mixture into a vacuum drying oven, drying the mixture for 1.7h at the temperature of 112 ℃, then carrying out heat treatment for 18min at the temperature of 520 ℃ in a calcining furnace under the protection of nitrogen, cooling the mixture to room temperature, feeding the mixture into a ball milling tank, carrying out ball milling until the particle size is less than or equal to 100 mu m, adding the mixture into 85kg of ethanol solution with the mass fraction of 75%, adding 1.3kg of maleic anhydride, carrying out ultrasonic treatment for 25min at the temperature of 77 ℃, filtering, washing and drying the mixture to obtain the light modifier.
Example 5
A lightweight high-strength air guide sleeve for a light truck comprises the following raw materials: 100kg of homopolymerized polypropylene, 25kg of block copolymerization polypropylene, 35kg of composite fiber, 14kg of light modifier, 1.5kg of maleic anhydride grafted polypropylene, 1.5kg of polyethylene wax, 1.5kg of calcium stearate, 1.5kg of dicumyl peroxide and 1.5kg of antioxidant BHT.
Under the condition of 230 ℃ and 2.16kg, the melt index of the homopolymerized polypropylene is 23.5g/10min, and the melt index of the block copolymerization polypropylene is 16g/10 min.
The composite fiber is prepared from polyborate short fibers, casein fibers, soybean protein fibers, silkworm pupa protein fibers and nano-cellulose whiskers according to the mass ratio of 25: 6: 4: 3: 3, and (3).
The preparation steps of the light modifier are as follows: uniformly mixing 7kg of nano silicon dioxide and 30kg of sawdust powder, feeding the mixture into a vacuum drying oven, drying the mixture for 1.5h at the temperature of 115 ℃, then carrying out heat treatment for 15min at the temperature of 530 ℃ in a calcining furnace under the protection of nitrogen, cooling the mixture to room temperature, feeding the mixture into a ball milling tank, carrying out ball milling until the particle size is less than or equal to 100 mu m, adding the mixture into 90kg of ethanol solution with the mass fraction of 70%, adding 1.5kg of maleic anhydride, carrying out ultrasonic treatment for 30min at the temperature of 75 ℃, filtering, washing and drying the mixture to obtain the light modifier.
Comparative example
A dome for a pickup truck, comprising: 100kg of homopolymerized polypropylene, 25kg of block copolymerization polypropylene, 35kg of composite fiber, 14kg of carbonized sawdust powder, 1.5kg of maleic anhydride grafted polypropylene, 1.5kg of polyethylene wax, 1.5kg of calcium stearate, 1.5kg of dicumyl peroxide and 1.5kg of antioxidant BHT.
Under the condition of 230 ℃ and 2.16kg, the melt index of the homopolymerized polypropylene is 23.5g/10min, and the melt index of the block copolymerization polypropylene is 16g/10 min.
The composite fiber is prepared from polyborate short fibers, casein fibers, soybean protein fibers, silkworm pupa protein fibers and nano-cellulose whiskers according to the mass ratio of 25: 6: 4: 3: 3, and (3).
The above examples and comparative examples were prepared using the following procedure:
mixing and melting the raw materials, delivering the mixture into an injection molding machine for injection, wherein the injection temperature is 190-.
Testing the melt index of each group of samples according to GB/T3682; testing the notch impact strength according to GB/T1843; scratch resistance was tested according to GMW14688Methoda-Code2(10N) with a rating of GMW144444.4.5. The results are as follows:
from the above table, it can be seen that: the air guide sleeve obtained by the invention has impact resistance and scratch resistance, and is suitable for light trucks.
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 (10)
1. The light high-strength air guide sleeve for the light truck is characterized by comprising the following raw materials in parts by weight: 100 parts of homopolymerized polypropylene, 20-30 parts of block copolymerization polypropylene, 30-40 parts of composite fiber, 10-18 parts of light modifier, 1-2 parts of maleic anhydride grafted polypropylene, 1-2 parts of polyethylene wax, 1-2 parts of calcium stearate, 1-2 parts of cross-linking agent and 1-2 parts of antioxidant.
2. The lightweight high-strength air guide sleeve for the pickup truck as set forth in claim 1, wherein the melt index of the homo-polypropylene is 20-26g/10min at 230 ℃ under 2.16 kg.
3. The lightweight high-strength air guide sleeve for the pickup truck as set forth in claim 1, wherein the melt index of the block copolymer polypropylene is 14 to 18g/10min at 230 ℃ under 2.16 kg.
4. The lightweight high-strength air guide sleeve for the pickup truck as recited in claim 1, wherein the composite fiber is at least one of polyborate short fiber, casein fiber, soybean protein fiber, silkworm pupa protein fiber and nano cellulose whisker.
5. The light weight and high strength air guide sleeve for the light weight freight train as claimed in claim 4, wherein the composite fiber is formed by mixing polyborate short fiber, casein fiber, soybean protein fiber, silkworm pupa protein fiber and nano cellulose whisker according to a mass ratio of 20-30: 2-10: 2-6: 1-5: 2-4.
6. The lightweight, high-strength air guide sleeve for pickup trucks according to claim 1, wherein the cross-linking agent is dicumyl peroxide or t-butyl hydroperoxide.
7. The lightweight high-strength air guide sleeve for the pickup truck as set forth in claim 1, wherein the antioxidant is at least one of antioxidant BHT, antioxidant CA and antioxidant 164.
8. The lightweight high-strength air guide sleeve for the pickup truck as set forth in claim 1, wherein the lightweight modifier is prepared by the steps of: uniformly mixing nano silicon dioxide and sawdust powder, drying at the temperature of 110-120 ℃ for 1-2h, calcining at the temperature of 500-560 ℃ for 10-20min under the protection of nitrogen, cooling to room temperature, ball-milling, adding into an ethanol solution, adding maleic anhydride, carrying out ultrasonic treatment at the temperature of 70-80 ℃ for 20-40min, filtering, washing and drying to obtain the light modifier.
9. The lightweight high-strength air guide sleeve for the pickup truck as recited in claim 8, wherein the mass fraction of the ethanol solution is 60-80%, and the mass ratio of the nano-silica, the sawdust powder, the ethanol solution and the maleic anhydride is 4-10: 20-40: 80-100: 1-2.
10. The lightweight high strength pod for pick-up trucks of claim 8, wherein the particle size is ball milled to 100 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010868219.9A CN111961284A (en) | 2020-08-26 | 2020-08-26 | Light high-strength air guide sleeve for light truck |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010868219.9A CN111961284A (en) | 2020-08-26 | 2020-08-26 | Light high-strength air guide sleeve for light truck |
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| CN111961284A true CN111961284A (en) | 2020-11-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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