CN104292653A - Automobile instrument board and preparation method thereof - Google Patents
Automobile instrument board and preparation method thereof Download PDFInfo
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- CN104292653A CN104292653A CN201410501133.7A CN201410501133A CN104292653A CN 104292653 A CN104292653 A CN 104292653A CN 201410501133 A CN201410501133 A CN 201410501133A CN 104292653 A CN104292653 A CN 104292653A
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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
- C08L23/14—Copolymers of propene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- 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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
- 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
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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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)
- Instrument Panels (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses an automobile instrument board and a preparation method thereof. The preparation method comprises the following steps: weighing random copolymer polypropylene, maleic anhydride, EPDM (ethylene-propylene-diene monomer), benzoic acid, talcum powder, silicon dioxide, antioxidant, triphosphite, mica, hydrogenated butadiene, coupling agent, EVA (ethylene-vinyl acetate), LDPE (low-density polyethylene), MDBS and PA6 (polyamide 6) according to parts by weight, uniformly mixing, extruding, granulating, and carrying out compression molding. The light transmittance of the product is 95-99%, and the tensile strength is 40-50 MPa. The non-notch impact strength is 75-95 kJ/m<2>, and the notch impact strength is 5-15 kJ/m<2>. The elastic modulus is 350-450 MPa, and the elongation at break is 150-250%. The heat-deformation temperature is 140-160 DEG C, and the ball-indentation hardness is 98-99.
Description
Technical field
The application belongs to automobile instrument panel preparation technology field, particularly relates to the automobile instrument panel and preparation method thereof of a kind of high transmission rate, high impact.
Background technology
Dashboard is positioned at officer right on, is generally furnished with wigwag instructions such as trip odometer, speedometer, engine speed indicator, fuel gauge and warning light etc. above.Dashboard can be divided into without air bag dashboard and attached air bag dashboard (for copilot) by security.The domestic car only having minority medium-to-high grade time is equipped with air bag dashboard at present, and along with people are to the attention of security, client strengthens attached air bag dashboard demand, main engine plants also using this as one of attractable point.Airbag-releasing, while protection passenger, also may injure passenger, especially children.Therefore, the instrument panel air bag of part new model has started to install switch additional in the world.For the normal unlatching of air bag, above air bag, be designed with air bag cover plate, the release air bag when it is opened more.But there is visual attaching line in itself and the dashboard place of coupling, affects car load attractive in appearance.For this reason, more and more the dashboard of multi-vehicle-type is designed to seamless gasbag dashboard in recent years.Can ensure that air bag is normally opened, again without visual attaching line.Dashboard can be divided into hard plastic dashboard, plastic uptake dashboard and semihard to steep soft instrument panel by comfortableness.Dashboard body with Shooting Technique make for hard plastic dashboard, because its technique is simple, invests the advantage such as low and be widely used, especially low and middle-grade car.Wherein there is local or be all coated with fancy paint or soft tactile paint, to improve outward appearance, increase tone or improve texture.Plastic uptake dashboard be injection moulding or compacting skeleton adsorb outward and bond or in injection moulding time compound epidermis, make its outward appearance have cortex sense.Semihard bubble soft instrument panel is filled with polyurethane foam between epidermis and skeleton, not only improves sense of touch but also increase endergonic ability.The epidermis of current semihard bubble soft instrument panel mainly contains vacuum-thermoform epidermis and slush moulding epidermis.The former is that traditional artificial leather technique is made; Hou person in recent years because of its decorative pattern evenly, internal stress free, design latitude high be widely used, and obtains client and highly approve, medium-to-high grade car owner will be become and lead.Tachometer gage is generally arranged in dashboard.Put together symmetrically with speedometer.Tachometer gage is according to magnetic principles work. the pulse signal produced when primary current is interrupted in its acceptance point fire coil.And this signal is converted to displayable tachometer value.Motor speed is faster, and the pulse number that spark coil produces is more, and on table, the tachometer value of display is larger.Present car is generally all polarity formula tachometer gage, has pointer-type and liquid crystal digital display type.Digital integrated circuit is had in table. spark coil carries the voltage pulse of coming through calculating rear drive pen travel or numerical monitor by it.A kind of tachometer gage is also had to be take out after pulse signal delivers to tachogenerator circuit explanation from generator to show tachometer value in addition.But because affecting by factors such as dynamo belt skiddings.Numerical value is not too accurate.
Panel board instrument panel, for installing stiffener plate or the structural part of instrument and relative assembly.Divide by pattern and have screen formula panel board, frame-type panel board, channel-type panel board, cabinet type panel board.Panel board can be with outer illumination, also can be attached supervisory control desk, has various forms and specification, can install various instrument on demand, also on demand various panel board can be combined into an entirety.Panel board is also the vocabulary of a broad sense sometimes, comprises dish, screen, cabinet, platform, simulation (half simulation) dish etc.In car, panel board can supervise the working condition of all parts in car, is requisite important instrument in car naturally.For the way of repacking panel board, repacking panel board is practical, but the instrument of installing is in principle based on water temperature, oil temperature, oil pressure and vacuum four kinds of instrument.Vehicle is after traveling for some time, and it is a lot of that car owner often finds that idling oil pressure has declined than primary standard, but a lot of car owner thinks that machine oil decline needs a very long time, and mileage has arrived machine oil and changed, and does not need usually to note oil-pressure gauge.In practical work, if long-duration driving vehicle, stroke, close to when refueling, will feel car not energetically previously.Here it is, and machine oil runs up for a long time that lower temperature is high, and the more difficult formation of oil film, needs to have lowered the temperature.In addition oil-pressure gauge also has a large function, and that is exactly check the whether false oil of your machine oil, because the pressure decay of false oil is mostly very fast, if machine oil just declines with less than 2000 kilometers of pressure, that has just been careful! In addition, if it is too many to decline in the pressure short period of time, just representing lubricating oil pump may have fault or leakage of oil, should check as early as possible.Vacuum meter is in order to the vacuum values that accurately checks engine has N/R.Whether engine computer fuel feeding is enough, that flow (pressure) sensor before utilizing intake manifold and the eos exhaust oxygen sensor in exhaust head section carry out, if engine has gas leak phenomenon, likely affect the data of fuel feeding computer air input, make incorrect fuel delivery, then idling will be unstable or occur the problem that engine working efficiency is bad.Install the generation that vacuum meter will predict above-mentioned situation earlier additional.The sensor of water temperature gauge is a kind of thermistor type sensors.Be fixed on engine cooling water channel with screw thread.Thermistor determines the size of current flowing through water temperature gauge coil winding.Thus table-drive head pointer swings.The water coolant of motor car engine was all serve as with tap water in the past. a lot of car engine cooling system all uses special cooling fluid now.Therefore also referred to as coolant temperature gauge.
Automobile instrument panel is the device of each system health of reflection vehicle.Common are fuel oil pilot lamp, scavenging solution pilot lamp, E-Gas pilot lamp, front and back fog-lamp warning light.The instrument of different automobile is not quite similar.But the conventional instrument of general automobile has speedometer, tachometer gage, oil manometer, water temperature gauge, fuel gauge, chargometer etc.Made pilot lamp miscellaneous or warning light under the facial mask of Hyundai Motor panel board, such as cooling-liquid level warning light, amount of fuel pilot lamp, cleanser liquid level pilot lamp, charging indicator light, distance-light become light pilot lamp, transmission gear pilot lamp, anti-blocking brake system (ABS) pilot lamp, motivating force control pilot lamp, air bag (SRS) warning light etc.In fact speedometer is made up of two tables.One is speedometer, and another is odometer.Traditional speedometer is mechanical.Typical mechanical type odometer connects a flexible axle. there is a wire hawser in flexible axle.The flexible axle the other end is connected on the some gears of variator.Gear rotarily drives wire hawser and rotates. and wire hawser drives one block of magnet in mileage watch glasses circle to rotate.Cover circle connects with pointer and by hairspring, pointer is placed in zero-bit.The speed of magnet speed of rotation causes the change of magnetic line of force size.Balance is broken pointer and is therefore driven.This speedometer is simple and practical. is widely used in large kart.But. along with the development of electronic technology.Now a lot of car instrument uses Electronic Speedometer, common a kind of be obtain signal from the velocity sensor variator, make needle deflection or display digit by the change of pulse-repetition.Odometer is a kind of digital instrument, and it, by the worm meshing on the transmitting gear of counter drum and speedometer transmission shaft, makes counter rotating drum.Be characterized in that upper level drum turns a whole circle.Next stage drum turns 1/10 circle.The same with speedometer, current odometer also has polarity formula odometer, and it obtains mileage signal from velocity sensor.The mileage of polarity formula odometer accumulation is digitally stored in nonvolatile memory, and state data also can be preserved under without electric shape.In the later stage fifties, due to the appearance of comprehensive telltale, T-shaped group row method progressively used instead by the basic flying instruments on dashboard.Combination airspeed indicator, approach horizon, beam compass and composite altimeter form T-shaped arrangement.Their displaying contents and form are more convenient for observing, and contribute to pilot control aircraft.The appearance of electronics synthesis display instrument makes the group row mode of dashboard there occurs significant change.Flight parameter integrated display, navigational parameter integrated display and various forms of Multi-function display instrument instead of the flying instruments that custom adopts gradually, are contained in the central position on central instrument panel.Some the most basic direct-reading type flying instruments, as emergent instrument, are arranged on below and the both sides of integrated display.
Chinese patent CN103146112A discloses a kind of instrument panel of motor vehicle alloy material, by SMA50-60 part, and glass fibre 10-20 part, ABS20-30 part, PP10-15 part, glass fibre 10-16 part, mica 14-15 part, methylphenyl siloxane branched chain type prepolymer 10-25 part, properties-correcting agent 10-20 part, pigment 10-30 part, aluminium 0.1-0.6 part, iron 0.6-0.9 part, silicon 0.1-1.3 part, rare earth element 0.01-0.09 part.The invention has the beneficial effects as follows high heat-resisting, toughness reinforcing, enhancing.Be widely used, but tensile strength is low and heat-drawn wire is low; Chinese patent CN103772885A discloses a kind of delustring PC/ABS automobile instrument disk material and preparation method thereof, adopts polycarbonate 15 ~ 30 parts; Polypropylene is fine-butadiene-styrene 55 ~ 65 parts; Toughner 3 ~ 6 parts; Self-control matting agent 3 ~ 7 parts; Compatilizer 4 ~ 6 parts; Lubricant 0.5 ~ 1 part; 0.4 ~ 0.8 part, oxidation inhibitor.The invention also discloses a kind of delustring PC/ABS automobile instrument disk material and preparation method thereof.The present invention carries out delustring process by adding self-control matting agent to PC/ABS alloy material surface, adds the toughness that toughner improves material simultaneously.Material is made to ensure that the prerequisite lower surface of excellent toughness becomes sub-light, reach automobile instrument panel appearance requirement, but Young's modulus and shock strength low. and universal along with humanity concept, and the formation of novel harmonious society, design the high and on-deformable automobile instrument panel and preparation method thereof of a kind of transmittance, tensile strength and shock strength and be very important.
Summary of the invention
the technical problem solved:
The application, for above-mentioned technical problem, provides a kind of automobile instrument panel and preparation method thereof, solves the technical problems such as existing automobile instrument panel notched Izod impact strength, Young's modulus, elongation at break and hardness are low.
technical scheme:
A kind of automobile instrument panel, the raw materials by weight portion proportioning of described automobile instrument panel is as follows: atactic copolymerized polypropene 100 parts; Maleic anhydride 3-17 part; EPDM10-30 part; Phenylformic acid 0.1-0.5 part; Talcum powder 10-30 part; Silica 1-5 parts; Oxidation inhibitor 0.5-2.5 part; Three phosphite 0.3-0.7 parts; Mica 30-60 part; Hydrogenated butadiene is 15-35 part; Coupling agent 0.3-0.7 part; EVA is 20-40 part; LDPE5-25 part; MDBS0.5-4.5 part; PA6 is 2-8 part.
As a preferred technical solution of the present invention: the raw materials by weight portion proportioning of described automobile instrument panel is as follows: atactic copolymerized polypropene 100 parts; Maleic anhydride 7-13 part; EPDM15-25 part; Phenylformic acid 0.2-0.4 part; Talcum powder 15-25 part; Silicon-dioxide 2-4 part; Oxidation inhibitor 1-2 part; Three phosphite 0.4-0.6 parts; Mica 40-50 part; Hydrogenated butadiene is 20-30 part; Coupling agent 0.4-0.6 part; EVA is 25-35 part; LDPE10-20 part; MDBS1.5-3.5 part; PA6 is 3-7 part.
As a preferred technical solution of the present invention: the raw materials by weight portion proportioning of described automobile instrument panel is as follows: atactic copolymerized polypropene 100 parts; Maleic anhydride 10 parts; EPDM20 part; 0.3 part, phenylformic acid; Talcum powder 20 parts; Silicon-dioxide 3 parts; 1.5 parts, oxidation inhibitor; Three phosphites 0.5 part; 45 parts, mica; Hydrogenated butadiene is 25 parts; Coupling agent 0.5 part; EVA is 30 parts; LDPE15 part; MDBS2.5 part; PA6 is 5 parts.
As a preferred technical solution of the present invention: described oxidation inhibitor adopts antioxidant 1010 or anti-oxidant DLTP.
As a preferred technical solution of the present invention: described coupling agent adopts silane coupling agent or aluminate coupling agent.
As a preferred technical solution of the present invention: the preparation method of described automobile instrument panel, comprises the steps:
The first step: take atactic copolymerized polypropene, maleic anhydride, EPDM, phenylformic acid, talcum powder, silicon-dioxide, oxidation inhibitor, three phosphites, mica, hydrogenated butadiene, coupling agent, EVA, LDPE, MDBS and PA6 according to parts by weight proportioning;
Second step: atactic copolymerized polypropene, maleic anhydride, EPDM, phenylformic acid and talcum powder are dropped in reactor and is heated to 40-60 DEG C, stir 25-35min;
3rd step: add surplus stock, be warming up to 70-90 DEG C, stirs 30-40min;
4th step: mixed material is dropped in forcing machine and extrudes, barrel temperature 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C, 250 DEG C, 255 DEG C and 260 DEG C;
5th step: compression molding, injection pressure 5-10MPa, dwell pressure 4.5-6.5MPa, inject time 3-7s.
As a preferred technical solution of the present invention: in described second step, stirring velocity is 200-300 rev/min.
As a preferred technical solution of the present invention: in described 3rd step, stirring velocity is 300-400 rev/min.
As a preferred technical solution of the present invention: in described 4th step, forcing machine is single screw extrusion machine.
beneficial effect:
A kind of automobile instrument panel of the present invention and preparation method thereof adopts above technical scheme compared with prior art, has following technique effect: 1, product transmittance 95-99%, tensile strength 40-50MPa; 2, unnotched impact strength 75-95kJ/m
2, notched Izod impact strength 5-15 kJ/m
2; 3, Young's modulus 350-450MPa, elongation at break 150-250%; 4, heat-drawn wire 140-160 DEG C, ball-indentation hardness 98-99, the widespread production not division of history into periods can replace current material.
Embodiment
embodiment 1:
Atactic copolymerized polypropene 100 parts is taken according to parts by weight proportioning; Maleic anhydride 3 parts; EPDM10 part; 0.1 part, phenylformic acid; Talcum powder 10 parts; Silica 1 part; Anti-oxidant DLTP 0.5 part; Three phosphites 0.3 part; 30 parts, mica; Hydrogenated butadiene is 15 parts; Silane coupling agent 0.3 part; EVA is 20 parts; LDPE5 part; MDBS0.5 part; PA6 is 2 parts.
Atactic copolymerized polypropene, maleic anhydride, EPDM, phenylformic acid and talcum powder are dropped in reactor and be heated to 40 DEG C, stir 25min, stirring velocity is 200 revs/min; Add surplus stock, be warming up to 70 DEG C, stirring velocity is 300 revs/min, stirs 30min.
Mixed material is dropped in single screw extrusion machine and extrudes, barrel temperature 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C, 250 DEG C, 255 DEG C and 260 DEG C, compression molding, injection pressure 5MPa, dwell pressure 4.5MPa, inject time 3s.
Transmittance 95%, tensile strength 40MPa; Unnotched impact strength 75kJ/m
2, notched Izod impact strength 5 kJ/m
2; Young's modulus 350MPa, elongation at break 150%; Heat-drawn wire 140 DEG C, ball-indentation hardness 98.
embodiment 2:
Atactic copolymerized polypropene 100 parts is taken according to parts by weight proportioning; Maleic anhydride 17 parts; EPDM30 part; 0.5 part, phenylformic acid; Talcum powder 30 parts; Silicon-dioxide 5 parts; Anti-oxidant DLTP 2.5 parts; Three phosphites 0.7 part; 60 parts, mica; Hydrogenated butadiene is 35 parts; Silane coupling agent 0.7 part; EVA is 40 parts; LDPE25 part; MDBS4.5 part; PA6 is 8 parts.
Atactic copolymerized polypropene, maleic anhydride, EPDM, phenylformic acid and talcum powder are dropped in reactor and be heated to 60 DEG C, stir 35min, stirring velocity is 300 revs/min; Add surplus stock, be warming up to 90 DEG C, stirring velocity is 400 revs/min, stirs 40min.
Mixed material is dropped in single screw extrusion machine and extrudes, barrel temperature 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C, 250 DEG C, 255 DEG C and 260 DEG C, compression molding, injection pressure 10MPa, dwell pressure 6.5MPa, inject time 7s.
Transmittance 96%, tensile strength 44MPa; Unnotched impact strength 80kJ/m
2, notched Izod impact strength 8 kJ/m
2; Young's modulus 370MPa, elongation at break 180%; Heat-drawn wire 145 DEG C, ball-indentation hardness 98.
embodiment 3:
Atactic copolymerized polypropene 100 parts is taken according to parts by weight proportioning; Maleic anhydride 7 parts; EPDM15 part; 0.2 part, phenylformic acid; Talcum powder 15 parts; Silicon-dioxide 2 parts; Anti-oxidant DLTP 1 part; Three phosphites 0.4 part; 40 parts, mica; Hydrogenated butadiene is 20 parts; Aluminate coupling agent 0.4 part; EVA is 25 parts; LDPE10 part; MDBS1.5 part; PA6 is 3 parts.
Atactic copolymerized polypropene, maleic anhydride, EPDM, phenylformic acid and talcum powder are dropped in reactor and be heated to 45 DEG C, stir 28min, stirring velocity is 220 revs/min; Add surplus stock, be warming up to 75 DEG C, stirring velocity is 330 revs/min, stirs 34min.
Mixed material is dropped in single screw extrusion machine and extrudes, barrel temperature 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C, 250 DEG C, 255 DEG C and 260 DEG C, compression molding, injection pressure 6MPa, dwell pressure 5MPa, inject time 4s.
Transmittance 97%, tensile strength 45MPa; Unnotched impact strength 85kJ/m
2, notched Izod impact strength 10kJ/m
2; Young's modulus 400MPa, elongation at break 200%; Heat-drawn wire 150 DEG C, ball-indentation hardness 98.
embodiment 4:
Atactic copolymerized polypropene 100 parts is taken according to parts by weight proportioning; Maleic anhydride 13 parts; EPDM25 part; 0.4 part, phenylformic acid; Talcum powder 25 parts; Silicon-dioxide 4 parts; Antioxidant 1010 is 2 parts; Three phosphites 0.6 part; 50 parts, mica; Hydrogenated butadiene is 30 parts; Aluminate coupling agent 0.6 part; EVA is 35 parts; LDPE20 part; MDBS3.5 part; PA6 is 7 parts.
Atactic copolymerized polypropene, maleic anhydride, EPDM, phenylformic acid and talcum powder are dropped in reactor and be heated to 55 DEG C, stir 33min, stirring velocity is 280 revs/min; Add surplus stock, be warming up to 85 DEG C, stirring velocity is 380 revs/min, stirs 37min.
Mixed material is dropped in single screw extrusion machine and extrudes, barrel temperature 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C, 250 DEG C, 255 DEG C and 260 DEG C, compression molding, injection pressure 8MPa, dwell pressure 6MPa, inject time 6s.
Transmittance 98%, tensile strength 48MPa; Unnotched impact strength 90kJ/m
2, notched Izod impact strength 12 kJ/m
2; Young's modulus 420MPa, elongation at break 220%; Heat-drawn wire 155 DEG C, ball-indentation hardness 99.
embodiment 5:
Atactic copolymerized polypropene 100 parts is taken according to parts by weight proportioning; Maleic anhydride 10 parts; EPDM20 part; 0.3 part, phenylformic acid; Talcum powder 20 parts; Silicon-dioxide 3 parts; Antioxidant 1010 is 1.5 parts; Three phosphites 0.5 part; 45 parts, mica; Hydrogenated butadiene is 25 parts; Aluminate coupling agent 0.5 part; EVA is 30 parts; LDPE15 part; MDBS2.5 part; PA6 is 5 parts.
Atactic copolymerized polypropene, maleic anhydride, EPDM, phenylformic acid and talcum powder are dropped in reactor and be heated to 50 DEG C, stir 30min, stirring velocity is 250 revs/min; Add surplus stock, be warming up to 80 DEG C, stirring velocity is 350 revs/min, stirs 35min.
Mixed material is dropped in single screw extrusion machine and extrudes, barrel temperature 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C, 250 DEG C, 255 DEG C and 260 DEG C, compression molding, injection pressure 7MPa, dwell pressure 5.5MPa, inject time 5s.
Transmittance 99%, tensile strength 50MPa; Unnotched impact strength 95kJ/m
2, notched Izod impact strength 15 kJ/m
2; Young's modulus 450MPa, elongation at break 250%; Heat-drawn wire 160 DEG C, ball-indentation hardness 99.
Composition all components in above embodiment all can business be bought.
Above-described embodiment is just for setting forth content of the present invention, instead of restriction, and any change therefore in the implication suitable with claims of the present invention and scope, all should think to be included in the scope of claims.
Claims (9)
1. an automobile instrument panel, is characterized in that the raw materials by weight portion proportioning of described automobile instrument panel is as follows: atactic copolymerized polypropene 100 parts; Maleic anhydride 3-17 part; EPDM10-30 part; Phenylformic acid 0.1-0.5 part; Talcum powder 10-30 part; Silica 1-5 parts; Oxidation inhibitor 0.5-2.5 part; Three phosphite 0.3-0.7 parts; Mica 30-60 part; Hydrogenated butadiene is 15-35 part; Coupling agent 0.3-0.7 part; EVA is 20-40 part; LDPE5-25 part; MDBS0.5-4.5 part; PA6 is 2-8 part.
2. a kind of automobile instrument panel according to claim 1, is characterized in that described automobile instrument panel raw materials by weight portion proportioning is as follows: atactic copolymerized polypropene 100 parts; Maleic anhydride 7-13 part; EPDM15-25 part; Phenylformic acid 0.2-0.4 part; Talcum powder 15-25 part; Silicon-dioxide 2-4 part; Oxidation inhibitor 1-2 part; Three phosphite 0.4-0.6 parts; Mica 40-50 part; Hydrogenated butadiene is 20-30 part; Coupling agent 0.4-0.6 part; EVA is 25-35 part; LDPE10-20 part; MDBS1.5-3.5 part; PA6 is 3-7 part.
3. a kind of automobile instrument panel according to claim 1, is characterized in that the raw materials by weight portion proportioning of described automobile instrument panel is as follows: atactic copolymerized polypropene 100 parts; Maleic anhydride 10 parts; EPDM20 part; 0.3 part, phenylformic acid; Talcum powder 20 parts; Silicon-dioxide 3 parts; 1.5 parts, oxidation inhibitor; Three phosphites 0.5 part; 45 parts, mica; Hydrogenated butadiene is 25 parts; Coupling agent 0.5 part; EVA is 30 parts; LDPE15 part; MDBS2.5 part; PA6 is 5 parts.
4. a kind of automobile instrument panel according to claim 1, is characterized in that: described oxidation inhibitor adopts antioxidant 1010 or anti-oxidant DLTP.
5. a kind of automobile instrument panel according to claim 1, is characterized in that: described coupling agent adopts silane coupling agent or aluminate coupling agent.
6. a preparation method for automobile instrument panel described in claim 1, is characterized in that, comprises the steps:
The first step: take atactic copolymerized polypropene, maleic anhydride, EPDM, phenylformic acid, talcum powder, silicon-dioxide, oxidation inhibitor, three phosphites, mica, hydrogenated butadiene, coupling agent, EVA, LDPE, MDBS and PA6 according to parts by weight proportioning;
Second step: atactic copolymerized polypropene, maleic anhydride, EPDM, phenylformic acid and talcum powder are dropped in reactor and is heated to 40-60 DEG C, stir 25-35min;
3rd step: add surplus stock, be warming up to 70-90 DEG C, stirs 30-40min;
4th step: mixed material is dropped in forcing machine and extrudes, barrel temperature 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C, 250 DEG C, 255 DEG C and 260 DEG C;
5th step: compression molding, injection pressure 5-10MPa, dwell pressure 4.5-6.5MPa, inject time 3-7s.
7. the preparation method of automobile instrument panel according to claim 6, is characterized in that: in described second step, stirring velocity is 200-300 rev/min.
8. the preparation method of automobile instrument panel according to claim 6, is characterized in that: in described 3rd step, stirring velocity is 300-400 rev/min.
9. the preparation method of automobile instrument panel according to claim 6, is characterized in that: in described 4th step, forcing machine is single screw extrusion machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410501133.7A CN104292653A (en) | 2014-09-26 | 2014-09-26 | Automobile instrument board and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106273526A (en) * | 2016-08-30 | 2017-01-04 | 宁波科镭汽车零部件有限公司 | A kind of processing technology of central control panel |
| CN106751234A (en) * | 2016-12-09 | 2017-05-31 | 芜湖天鸿汽车零部件有限公司 | Lid injected molded polymeric material and preparation method thereof in a kind of automobile engine |
| CN107955262A (en) * | 2017-11-28 | 2018-04-24 | 安徽伟合电子科技有限公司 | A kind of automobile instrument panel PP composite material |
| CN107987380A (en) * | 2017-11-28 | 2018-05-04 | 安徽伟合电子科技有限公司 | A kind of preparation method of automobile instrument panel composite polypropylene plastics |
| CN108003477A (en) * | 2017-11-28 | 2018-05-08 | 安徽伟合电子科技有限公司 | A kind of preparation method of high tenacity instrument board polypropylene plastics |
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| CN102464830A (en) * | 2010-11-18 | 2012-05-23 | 上海杰事杰新材料(集团)股份有限公司 | Modified polypropylene material as well as preparation method and application thereof |
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| CN106273526A (en) * | 2016-08-30 | 2017-01-04 | 宁波科镭汽车零部件有限公司 | A kind of processing technology of central control panel |
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| CN107955262A (en) * | 2017-11-28 | 2018-04-24 | 安徽伟合电子科技有限公司 | A kind of automobile instrument panel PP composite material |
| CN107987380A (en) * | 2017-11-28 | 2018-05-04 | 安徽伟合电子科技有限公司 | A kind of preparation method of automobile instrument panel composite polypropylene plastics |
| CN108003477A (en) * | 2017-11-28 | 2018-05-08 | 安徽伟合电子科技有限公司 | A kind of preparation method of high tenacity instrument board polypropylene plastics |
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Application publication date: 20150121 |