CN112457573A - Impact-resistant automobile bumper material and preparation method thereof - Google Patents

Impact-resistant automobile bumper material and preparation method thereof Download PDF

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Publication number
CN112457573A
CN112457573A CN202011107034.2A CN202011107034A CN112457573A CN 112457573 A CN112457573 A CN 112457573A CN 202011107034 A CN202011107034 A CN 202011107034A CN 112457573 A CN112457573 A CN 112457573A
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Prior art keywords
parts
belt wheel
mixing
bumper material
blanking
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Chinese (zh)
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曹可庆
孙俊
姚伟
卞陈忠
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Shanghai Mingchen Molding Technology Co ltd
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Shanghai Mingchen Molding Technology Co ltd
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Priority to CN202011107034.2A priority Critical patent/CN112457573A/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/24—Component parts, details or accessories; Auxiliary operations for feeding
    • B29B7/242—Component parts, details or accessories; Auxiliary operations for feeding in measured doses
    • B29B7/244—Component parts, details or accessories; Auxiliary operations for feeding in measured doses of several materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

The invention belongs to the field of automobile bumpers, and particularly discloses an impact-resistant automobile bumper material and a preparation method thereof, wherein the bumper material comprises the following components in parts by weight: 23-45 parts of polypropylene, 3-7 parts of trichloroethyl phosphate, 3-5 parts of ethylene propylene rubber, 6-14 parts of thermoplastic polyurethane, 3-6 parts of carbon nano tubes, 4-10 parts of powder filler, 2-5 parts of polyisophthaloyl metaphenylene diamine fiber, 1-2 parts of lubricant, 1-4 parts of diatomite composite and 0.5-2 parts of surface modifier. According to the invention, the carbon nano tube, the powder filler, the polyisophthaloyl metaphenylene diamine fiber and the diatomite composite are added, so that the strength and toughness of the bumper material are improved, and the prepared bumper material is widely suitable for automobile bumpers.

Description

Impact-resistant automobile bumper material and preparation method thereof
Technical Field
The invention relates to the field of automobile bumpers, in particular to an impact-resistant automobile bumper material and a preparation method thereof.
Background
The plastic bumper has strength, rigidity and decoration, and can play a role in buffering when an automobile is in collision accident from the safety aspect, so that front and rear automobile bodies are protected; from the appearance, the decorative car can be naturally combined with the car body into a whole, has good decoration, and becomes an important part for decorating the appearance of the car. In order to reduce the damage to the passengers in the event of a side impact accident, a door bumper is usually installed on the car to enhance the impact force of the door. The method is practical and simple, changes of the vehicle body structure are not large, and the method is widely popularized and used. The installation of the car door bumper is that a plurality of high-strength steel beams are transversely or obliquely arranged in the door plate of each car door, and the car door bumper plays a role of a car front bumper and a car rear bumper.
Automobile bumpers are required to have excellent high and low temperature impact toughness, rigidity, aging resistance, heat resistance, cold resistance, oil resistance, lubricating oil, paint and other properties. Of which the most important is a higher impact toughness and good process flow properties. However, the existing bumper material cannot meet the requirement of higher impact toughness, so that the bumper material has poor impact resistance effect.
Disclosure of Invention
The invention aims to provide an impact-resistant automobile bumper material and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an impact-resistant automobile bumper material, which comprises the following components in parts by weight: 23-45 parts of polypropylene, 3-7 parts of trichloroethyl phosphate, 3-5 parts of ethylene propylene rubber, 6-14 parts of thermoplastic polyurethane, 3-6 parts of carbon nano tubes, 4-10 parts of powder filler, 2-5 parts of polyisophthaloyl metaphenylene diamine fiber, 1-2 parts of lubricant, 1-4 parts of diatomite composite and 0.5-2 parts of surface modifier.
Preferably, the bumper material comprises the following components in parts by weight: 29 parts of polypropylene, 4 parts of trichloroethyl phosphate, 3 parts of ethylene propylene rubber, 7 parts of thermoplastic polyurethane, 3 parts of carbon nano tubes, 6 parts of powder filler, 2 parts of polyisophthaloyl metaphenylene diamine fiber, 1 part of lubricant, 1 part of diatomite composite and 0.8 part of surface modifying active agent.
Preferably, the powder filler is a mixture of talcum powder, calcium carbonate and mica powder, and the mixture is coated by an auxiliary agent and subjected to surface activation treatment.
Preferably, the surface modifying active agent is any one of oligomeric silsesquioxane and cetyl pyridinium chloride.
The preparation method of the impact-resistant automobile bumper material comprises the following steps:
a: weighing 29 parts of polypropylene, 4 parts of trichloroethyl phosphate, 3 parts of ethylene propylene rubber, 7 parts of thermoplastic polyurethane, 3 parts of carbon nano tubes, 6 parts of powder filler, 2 parts of polyisophthaloyl metaphenylene diamine fiber, 1 part of lubricant, 1 part of diatomite composite and 0.8 part of surface modifying active agent;
b: adding the polypropylene, the trichloroethyl phosphate, the ethylene propylene rubber, the thermoplastic polyurethane and the diatomite compound weighed in the step A into a mixing device for mixing to obtain a premix;
c: adding carbon nano tubes, powder filler, polyisophthaloyl metaphenylene diamine fiber, lubricant and surface modifier into a mixing device, mixing, and adding the mixture into a double-screw extruder;
d: and carrying out melt blending extrusion at the temperature of 180-210 ℃ by using a double-screw extruder, and cooling, pelletizing and drying an extruded product after extrusion to obtain a finished bumper material.
Preferably, the mixing device in the step B comprises a box body, a discharging bin, a mixing mechanism and an auxiliary discharging mechanism, wherein the box body is provided with a semi-closed cavity and a box door matched with the semi-closed cavity, the mixing mechanism and the auxiliary discharging mechanism are arranged in the cavity of the box body, and the discharging bin communicated with the inner cavity of the box body is arranged on the top side of the box body; mixing mechanism includes mixing box, first stirring subassembly and second stirring subassembly, and the mixing box top is equipped with the opening that corresponds with feed bin, and inboard upper portion of mixing box and lower part are equipped with first stirring subassembly and second stirring subassembly respectively.
Preferably, the first stirring assembly comprises a first motor, a first belt wheel connected to the shaft end of the first motor, a second belt wheel and a third belt wheel which are connected to the first belt wheel through a transmission belt, the shaft ends of the first belt wheel and the second belt wheel are both connected with a first stirring rod, and the first stirring rod extends into the mixing box; the second stirring assembly comprises a second motor, a fourth belt wheel and a disc, the fourth belt wheel and the disc are connected to the shaft end of the second motor, the disc is arranged on the front side of the shaft end of the second motor, the end face of the disc is hinged to a connecting arm, the free end of the connecting arm is movably connected with a third motor, the shaft end of the third motor is connected with a second stirring rod, the second stirring rod penetrates through the side wall of the mixing box and extends into the lower side of the cavity of the mixing box, and stirring blades are distributed on the second stirring rod.
Preferably, the auxiliary blanking mechanism is arranged in the box body and is close to the blanking bin and the mixing box, the auxiliary blanking mechanism comprises a connecting plate, a blanking plate, a fifth belt wheel and a hammering rod, the connecting plate is fixed on the side wall of the box body, and the end part of the connecting plate close to the mixing box is movably connected with the hammering rod through a pin shaft; the top end of the hammering rod is fixedly connected with the connecting plate through a spring, the bottom end of the hammering rod is connected with a hammer head, a cam is arranged at the end part, close to the hammering rod, of the third belt wheel, and the cam is abutted against the hammering rod when the third belt wheel runs.
Preferably, the fifth belt pulley is connected with the side wall of the box body through a bracket, the fifth belt pulley and the fourth belt pulley are linked through a belt, and a first helical gear is arranged on the front side of the shaft end of the fifth belt pulley; the blanking plate is arranged at the lower part of the blanking bin, two ends of the blanking plate are respectively connected with a telescopic rod and a toothed plate, and a blanking rake extending into the blanking bin is arranged at the end part of the blanking plate close to the blanking bin; the side is equipped with the dwang before the pinion rack, the cover is equipped with the gear with the pinion rack meshing on the dwang, and the end connection that the gear was kept away from to the dwang has the second helical gear with first helical gear complex.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the carbon nano tube, the powder filler, the polyisophthaloyl metaphenylene diamine fiber and the diatomite composite are added, so that the strength and the toughness of the bumper material are improved, and the prepared bumper material is widely suitable for automobile bumpers, so that the product not only has excellent impact toughness, but also has good aging resistance.
2. The mixing device adopted in the preparation process can uniformly mix all the raw materials of the bumper material, so that the mixing uniformity of the material is better when the material is processed, the mixing device adopts two groups of stirring assemblies, the stirring effect is better, and meanwhile, the blanking device can assist in blanking, so that the situations of material blocking and material blockage are avoided.
Drawings
FIG. 1 is a first schematic structural diagram of a mixing device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a mixing device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a mixing device in an embodiment of the present invention.
In the figure: 1. a box body; 2. discharging a bin; 3. a mixing box; 4. a first motor; 401. a first pulley; 402. a second pulley; 403. a third belt pulley; 404. a first stirring rod; 5. a fourth pulley; 6. a disc; 601. a connecting arm; 602. a third motor; 603. a second stirring rod; 7. a connecting plate; 8. a blanking plate; 9. a fifth belt pulley; 10. a hammering rod; 11. a hammer head; 12. a cam; 13. a first helical gear; 14. a telescopic rod; 15. a toothed plate; 16. rotating the rod; 17. a gear; 18. a second bevel gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1: the invention provides a technical scheme that: an impact-resistant automobile bumper material, which comprises the following components in parts by weight: 23-45 parts of polypropylene, 3-7 parts of trichloroethyl phosphate, 3-5 parts of ethylene propylene rubber, 6-14 parts of thermoplastic polyurethane, 3-6 parts of carbon nano tubes, 4-10 parts of powder filler, 2-5 parts of polyisophthaloyl metaphenylene diamine fiber, 1-2 parts of lubricant, 1-4 parts of diatomite composite and 0.5-2 parts of surface modifier.
In this embodiment, the method for preparing the impact-resistant bumper material for automobiles comprises the following steps:
a: weighing 29 parts of polypropylene, 4 parts of trichloroethyl phosphate, 3 parts of ethylene propylene rubber, 7 parts of thermoplastic polyurethane, 3 parts of carbon nano tubes, 6 parts of powder filler, 2 parts of polyisophthaloyl metaphenylene diamine fiber, 1 part of lubricant, 1 part of diatomite composite and 0.8 part of surface modifying active agent;
b: adding the polypropylene, the trichloroethyl phosphate, the ethylene propylene rubber, the thermoplastic polyurethane and the diatomite compound weighed in the step A into a mixing device for mixing to obtain a premix;
c: adding carbon nano tubes, powder filler, polyisophthaloyl metaphenylene diamine fiber, lubricant and surface modifier into a mixing device, mixing, and adding the mixture into a double-screw extruder;
d: and carrying out melt blending extrusion at the temperature of 180-210 ℃ by using a double-screw extruder, and cooling, pelletizing and drying an extruded product after extrusion to obtain a finished bumper material.
In this embodiment, the powder filler is a mixture of talc powder, calcium carbonate, and mica powder, and the mixture is coated with an auxiliary agent and subjected to surface activation treatment.
In this example, the surface modifying active agent was either oligomeric silsesquioxane or cetylpyridinium chloride.
Example 2: the invention provides a technical scheme that: an impact-resistant automobile bumper material, which comprises the following components in parts by weight: 23-45 parts of polypropylene, 3-7 parts of trichloroethyl phosphate, 3-5 parts of ethylene propylene rubber, 6-14 parts of thermoplastic polyurethane, 3-6 parts of carbon nano tubes, 4-10 parts of powder filler, 2-5 parts of polyisophthaloyl metaphenylene diamine fiber, 1-2 parts of lubricant, 1-4 parts of diatomite composite and 0.5-2 parts of surface modifier.
In this embodiment, the method for preparing the impact-resistant bumper material for automobiles comprises the following steps:
a: weighing the following components in parts by weight, 34 parts of polypropylene, 6 parts of trichloroethyl phosphate, 5 parts of ethylene propylene rubber, 9 parts of thermoplastic polyurethane, 4 parts of carbon nano tubes, 8 parts of powder filler, 4 parts of polyisophthaloyl metaphenylene diamine fibers, 2 parts of lubricant, 2 parts of diatomite composite and 1.2 parts of surface modifying active agent;
b: adding the polypropylene, the trichloroethyl phosphate, the ethylene propylene rubber, the thermoplastic polyurethane and the diatomite compound weighed in the step A into a mixing device for mixing to obtain a premix;
c: adding carbon nano tubes, powder filler, polyisophthaloyl metaphenylene diamine fiber, lubricant and surface modifier into a mixing device, mixing, and adding the mixture into a double-screw extruder;
d: and carrying out melt blending extrusion at the temperature of 180-210 ℃ by using a double-screw extruder, and cooling, pelletizing and drying an extruded product after extrusion to obtain a finished bumper material.
In the embodiment, the carbon nanotubes, the powder filler, the polyisophthaloyl metaphenylene diamine fibers and the diatomite composite are added, so that the strength and the toughness of the bumper material are improved, and the prepared bumper material is widely applied to automobile bumpers, so that the product not only has excellent impact toughness, but also has good aging resistance.
Example 3: referring to fig. 1-3, the present invention provides a technical solution: a shock-resistant automobile bumper material and a preparation method thereof are provided, wherein in the step B of the preparation method, a mixing device comprises a box body 1, a blanking bin 2, a mixing mechanism and an auxiliary blanking mechanism, the box body 1 is provided with a semi-closed cavity and a box door matched with the semi-closed cavity, the mixing mechanism and the auxiliary blanking mechanism are arranged in a cavity of the box body 1, and the top side of the box body 1 is provided with the blanking bin 2 communicated with the cavity of the box body; mixing mechanism includes mixing box 3, first stirring subassembly and second stirring subassembly, and 3 tops of mixing box are equipped with the opening that corresponds with feed bin 2, and 3 inboard upper portions of mixing box and lower part are equipped with first stirring subassembly and second stirring subassembly respectively.
In this embodiment, the first stirring assembly includes a first motor 4, a first belt pulley 401 connected to a shaft end of the first motor 4, and a second belt pulley 402 and a third belt pulley 403 connected to the first belt pulley 401 through a transmission belt, wherein shaft ends of the first belt pulley 401 and the second belt pulley 402 are both connected with a first stirring rod 404, and the first stirring rod 404 extends into the mixing box 3; the second stirring assembly comprises a second motor, a fourth belt wheel 5 and a disc 6, wherein the fourth belt wheel 5 and the disc 6 are connected to the shaft end of the second motor, the disc 6 is arranged on the front side of the shaft end of the second motor, the end face of the second motor is hinged to a connecting arm 601, the free end of the connecting arm 601 is movably connected with a third motor 602, the shaft end of the third motor 602 is connected with a second stirring rod 603, the second stirring rod 603 penetrates through the side wall of the mixing box 3 and extends into the lower side of the cavity of the mixing box, and stirring blades are distributed on the second.
In the embodiment, the auxiliary blanking mechanism is arranged in the box body 1 and is close to the blanking bin 2 and the mixing box 3, the auxiliary blanking mechanism comprises a connecting plate 7, a blanking plate 8, a fifth belt wheel 9 and a hammering rod 10, the connecting plate 7 is fixed on the side wall of the box body 1, and the end part of the connecting plate 7 close to the mixing box 3 is movably connected with the hammering rod 10 through a pin shaft; the top end of the hammering rod 10 is fixedly connected with the connecting plate 7 through a spring, the bottom end of the hammering rod 10 is connected with a hammer 11, the end part of the third belt wheel 403 close to the hammering rod 10 is provided with a cam 12, and the cam 12 presses the hammering rod 10 when the third belt wheel 403 runs.
In the embodiment, the fifth belt wheel 9 is connected with the side wall of the box body 1 through a bracket, the fifth belt wheel 9 is linked with the fourth belt wheel 5 through a belt, and a first bevel gear 13 is arranged on the front side of the shaft end of the fifth belt wheel 9; the blanking plate 8 is arranged at the lower part of the blanking bin 2, two ends of the blanking plate 8 are respectively connected with a telescopic rod 14 and a toothed plate 15, and a blanking rake extending into the blanking bin 2 is arranged at the end part of the blanking plate 8 close to the blanking bin 2; the front side end of the toothed plate 15 is provided with a rotating rod 16, the rotating rod 16 is sleeved with a gear 17 meshed with the toothed plate 15, and the end part of the rotating rod 16 far away from the gear 17 is connected with a second bevel gear 18 matched with the first bevel gear 13.
In this embodiment, the mixing device operates: by adding the raw materials of the above-mentioned components into the lower bin 2, the raw materials fall from the lower bin 2 to the mixing box 3, and by starting the first motor 4, the second motor and the third motor 602, the first motor 4 drives the first belt wheel 401 to operate and links the second belt wheel 402 and the third belt wheel 403, so that the two first stirring rods 404 operate to stir the upper part of the mixing box 3, the second motor drives the fourth belt wheel 5 and the disc 6 to operate, so that the disc 6 drives the connecting arm 601, and drives the third motor 602 and the second stirring rod 603 through the connecting arm 601, so that the second stirring rod 603 moves and stirs the lower part of the mixing box 3, because the fifth belt wheel 9 and the fourth belt wheel 5 are linked through a belt, the fifth belt wheel 9 drives the first helical gear 13 to operate along with the operation of the fourth belt wheel 5, so that the first helical gear 13 is engaged with the rotating rod 16, so that the 16 operates and drives the gear 17, the gear 17 is meshed with the toothed plate 15, so that the toothed plate 15 drives the blanking plate 8 to move, and the blanking rake on the blanking plate 8 moves in the blanking bin 2 and performs auxiliary blanking.
Moreover, the invention is also provided with a hammering rod 10, and the cam 12 runs along with the third belt wheel 403 and presses against the hammering rod 10, so that the hammer head 11 at the end part of the hammering rod 10 strikes the mixing box 3, and materials are prevented from being adhered to the inner wall of the mixing box 3.
It is worth noting that: whole mixing arrangement is connected with the power and always controls the button, and it realizes controlling it through always controlling the button, because the equipment that control button matches is equipment commonly used, belongs to current mature technology, no longer gives unnecessary details its electric connection relation and concrete circuit structure here.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. An impact-resistant automobile bumper material is characterized by comprising the following components in parts by weight: 23-45 parts of polypropylene, 3-7 parts of trichloroethyl phosphate, 3-5 parts of ethylene propylene rubber, 6-14 parts of thermoplastic polyurethane, 3-6 parts of carbon nano tubes, 4-10 parts of powder filler, 2-5 parts of polyisophthaloyl metaphenylene diamine fiber, 1-2 parts of lubricant, 1-4 parts of diatomite composite and 0.5-2 parts of surface modifier.
2. An impact-resistant automotive bumper material according to claim 1, wherein the bumper material comprises, in parts by weight: 29 parts of polypropylene, 4 parts of trichloroethyl phosphate, 3 parts of ethylene propylene rubber, 7 parts of thermoplastic polyurethane, 3 parts of carbon nano tubes, 6 parts of powder filler, 2 parts of polyisophthaloyl metaphenylene diamine fiber, 1 part of lubricant, 1 part of diatomite composite and 0.8 part of surface modifying active agent.
3. An impact-resistant bumper material according to claim 1, wherein the powder filler is a mixture of talc, calcium carbonate and mica powder, and the mixture is coated with an auxiliary agent and subjected to surface activation treatment.
4. An impact-resistant automotive bumper material according to claim 1, wherein said surface-modifying active agent is any one of oligomeric silsesquioxane and cetylpyridinium chloride.
5. The method for preparing an impact-resistant bumper material for automobiles according to any one of claims 1 to 4, comprising the steps of:
a: weighing 29 parts of polypropylene, 4 parts of trichloroethyl phosphate, 3 parts of ethylene propylene rubber, 7 parts of thermoplastic polyurethane, 3 parts of carbon nano tubes, 6 parts of powder filler, 2 parts of polyisophthaloyl metaphenylene diamine fiber, 1 part of lubricant, 1 part of diatomite composite and 0.8 part of surface modifying active agent;
b: adding the polypropylene, the trichloroethyl phosphate, the ethylene propylene rubber, the thermoplastic polyurethane and the diatomite compound weighed in the step A into a mixing device for mixing to obtain a premix;
c: adding carbon nano tubes, powder filler, polyisophthaloyl metaphenylene diamine fiber, lubricant and surface modifier into a mixing device, mixing, and adding the mixture into a double-screw extruder;
d: and carrying out melt blending extrusion at the temperature of 180-210 ℃ by using a double-screw extruder, and cooling, pelletizing and drying an extruded product after extrusion to obtain a finished bumper material.
6. The method for preparing an impact-resistant automobile bumper material according to claim 5, wherein the mixing device in the step B comprises a box body (1), a blanking bin (2), a mixing mechanism and an auxiliary blanking mechanism, the box body (1) is provided with a semi-closed cavity and a box door matched with the semi-closed cavity, the mixing mechanism and the auxiliary blanking mechanism are arranged in the cavity of the box body (1), and the top side of the box body (1) is provided with the blanking bin (2) communicated with the cavity of the box body; mixing mechanism includes mixing box (3), first stirring subassembly and second stirring subassembly, and mixing box (3) top is equipped with the opening that corresponds with feed bin (2) down, and mixing box (3) inboard upper portion and lower part are equipped with first stirring subassembly and second stirring subassembly respectively.
7. The method for preparing the impact-resistant automobile bumper material according to claim 6, wherein the first stirring assembly comprises a first motor (4), a first belt wheel (401) connected to the shaft end of the first motor (4), a second belt wheel (402) and a third belt wheel (403) which are connected to the first belt wheel (401) through a transmission belt, the shaft ends of the first belt wheel (401) and the second belt wheel (402) are both connected with a first stirring rod (404), and the first stirring rod (404) extends into the mixing box (3); the second stirring assembly comprises a second motor, a fourth belt wheel (5) and a disc (6), wherein the fourth belt wheel is connected to the shaft end of the second motor, the disc (6) is arranged on the front side of the shaft end of the second motor, the end face of the second motor is hinged to a connecting arm (601), the free end of the connecting arm (601) is movably connected with a third motor (602), the shaft end of the third motor (602) is connected with a second stirring rod (603), the second stirring rod (603) penetrates through the side wall of the mixing box (3) and stretches into the lower side in the cavity of the mixing box, and stirring blades are distributed on the second stirring rod (603).
8. The method for preparing the impact-resistant automobile bumper material according to claim 6, wherein the auxiliary blanking mechanism is arranged in the box body (1) and is close to the blanking bin (2) and the mixing box (3), the auxiliary blanking mechanism comprises a connecting plate (7), a blanking plate (8), a fifth belt wheel (9) and a hammering rod (10), the connecting plate (7) is fixed on the side wall of the box body (1), and the end part of the connecting plate (7) close to the mixing box (3) is movably connected with the hammering rod (10) through a pin shaft; the top end of the hammering rod (10) is fixedly connected with the connecting plate (7) through a spring, the bottom end of the hammering rod (10) is connected with a hammer head (11), a cam (12) is arranged at the end part, close to the hammering rod (10), of the third belt wheel (403), and the cam (12) abuts against the hammering rod (10) when the third belt wheel (403) runs.
9. The method for preparing the impact-resistant automobile bumper material according to claim 8, wherein the fifth belt wheel (9) is connected with the side wall of the box body (1) through a bracket, the fifth belt wheel (9) is linked with the fourth belt wheel (5) through a belt, and a first bevel gear (13) is arranged on the front side of the shaft end of the fifth belt wheel (9); the blanking plate (8) is arranged at the lower part of the blanking bin (2), two ends of the blanking plate (8) are respectively connected with a telescopic rod (14) and a toothed plate (15), and a blanking rake extending into the blanking bin (2) is arranged at the end part, close to the blanking bin (2), of the blanking plate (8); the utility model discloses a pinion rack, including pinion rack (15), the end is equipped with dwang (16) before pinion rack (15), and the cover is equipped with gear (17) with pinion rack (15) meshing on dwang (16), and the end connection that gear (17) were kept away from in dwang (16) has second helical gear (18) with first helical gear (13) complex.
CN202011107034.2A 2020-10-16 2020-10-16 Impact-resistant automobile bumper material and preparation method thereof Pending CN112457573A (en)

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CN113476999A (en) * 2021-08-09 2021-10-08 刘顺利 A gas cleaning device for environmental protection

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CN109294185A (en) * 2018-09-10 2019-02-01 武汉金发科技有限公司 A kind of automotive bumper material and the preparation method and application thereof
CN109486028A (en) * 2018-12-03 2019-03-19 太仓冠联高分子材料有限公司 A kind of low-temperature resistant and shock resistant automobile bumper material
CN111744390A (en) * 2020-08-07 2020-10-09 嘉兴久顺科技有限公司 Production device of colored permeable resin paving material

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CN104817769A (en) * 2015-04-22 2015-08-05 重庆交通大学 Novel bumper material and automobile bumper thereof
CN105037921A (en) * 2015-04-22 2015-11-11 重庆交通大学 Anti-impact-resistant modified polypropylene bumper material
CN105037922A (en) * 2015-04-22 2015-11-11 重庆交通大学 High-impact-resistant anti-aging automobile bumper
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Application publication date: 20210309