CN106751041A - A kind of automotive trim polypropylene and its preparation technology - Google Patents
A kind of automotive trim polypropylene and its preparation technology Download PDFInfo
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- CN106751041A CN106751041A CN201710186421.1A CN201710186421A CN106751041A CN 106751041 A CN106751041 A CN 106751041A CN 201710186421 A CN201710186421 A CN 201710186421A CN 106751041 A CN106751041 A CN 106751041A
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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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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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
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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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
- 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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/02—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
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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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Abstract
The invention discloses a kind of automotive trim polypropylene and its preparation technology, its drip irrigation device is：The automotive trim polypropylene following components is constituted, and the mass fraction of each component and each component is：60 ~ 70 parts of polypropylene, 8 ~ 15 parts of ethylene propylene diene rubber, 18 ~ 23 parts of talcum powder, 2 ~ 4 parts of compatilizer, 0.8 ~ 1.2 part of dispersant, 1.5 ~ 2.5 parts of eliminating smell agent, 1.5 ~ 3 parts of coupling agent, with impact strength higher and compared with low-shrinkage, there is preferable mechanical property, mobile performance, it is easily processed into type, and heat resistance is good, good stability of the dimension also have high-wearing feature, high tenacity and low VOC emission amount the characteristics of.
Description
Technical field
The present invention relates to macromolecular material, more particularly to a kind of automotive trim polypropylene and its preparation technology.
Background technology
Polypropylene material be a kind of high density, unprotected side chain, it is highly crystalline must linear polymer, with excellent comprehensive
Energy.Compared to polyethylene when not colouring, with light weight, transparency is good the characteristics of, and hardness is high.
A kind of PP composite material and preparation method thereof, poly- third as disclosed in the patent that publication No. is CN102329457A
Alkene composite is composed of the following components by weight percentage：PP resins 52-72%；Compatilizer 1-6%；Toughener 10-20%；
Talcum powder 6-20%；Lubricant 0.3-0.5%；Coupling agent 0.2-1%；Nucleator 0.2-1%；Dispersant 0.5-2%；Described
Compatilizer is graft PP and/or grafting POE.With impact strength higher and compared with low-shrinkage, there is preferable mechanical property, flow
Dynamic performance, it is easy to machine-shaping, and heat resistance is good, good stability of the dimension.
Therefore polypropylene material people live in application it is more and more extensive, such as electrically, machinery, commodity, Turnover Box,
The aspects such as the materials such as medical device, building, upholstery.Due to the advantageous characteristic of polypropylene material, in Automobile Design
The material is largely used, Research on Lightweight Design of Automobile Structure can be not only realized, and can synthetically reflect to Automobile Design
The requirement of energy, i.e. lightweight, safety, anti-corrosion, moulding and comfortableness etc..In addition, also helping reduces cost, material money is saved
Source.
With the popularity of humanized concept, the composition of new harmonious society, to the wear-resisting of upholstery polypropylene material
Property and toughness and VOC content suffer from higher and higher requirement.
The content of the invention
First purpose of the invention is to provide a kind of high-wearing feature, high tenacity and the low automotive trim of VOC emission amount and gathers
Propylene.
Above-mentioned technical purpose of the invention technical scheme is that：
The quality of a kind of automotive trim polypropylene, the automotive trim polypropylene following components composition, each component and each component
Number is：60~70 parts of polypropylene, 8~15 parts of ethylene propylene diene rubber, 18~23 parts of talcum powder, 2~4 parts of compatilizer, dispersant
0.8~1.2 part, 1.5~2.5 parts of eliminating smell agent, 1.5~3 parts of coupling agent.
By using above-mentioned technical proposal, modern automobile industry also increasingly focuses on oil in addition to pursuing speed and manipulation
Consumption and environmental protection problem, automobile are lighter, often also more fuel-efficient, while speed is also better with manipulation experience, polypropylene is density
One of minimum macromolecular material, its weight only has 1/9th of the iron of formed objects, but this does not hinder it to possess
Relatively good intensity and hardness, polyacrylic intensity and hardness have benefited from its high-crystallinity and regular structure, except machine high
Outside tool intensity, polypropylene does not have toxicity, it is easy to machine-shaping, resistance to greasy dirt and easy to clean, meanwhile, polypropylene material texture ratio
Finer and smoother, body-sensing is pleasant, and damping, sound insulation and heat-insulated effect can also be played for doing automotive upholstery, can not only improve
The comfortableness of automobile, moreover it is possible to when vehicle collides for occupant provides sufficiently protection；The intramolecule of ethylene propylene diene rubber
Chain structure is fully saturated, and its preferably Chain Flexibility and substitution base possesses less steric hindrance speciality and makes ternary second
Third rubber has remarkable weatherability, ozone resistance, good cryogenic property and chemical stability, and three are added in polypropylene
First EP rubbers, can be obviously improved polyacrylic impact flexibility, and can improve the ageing resistance of polypropylene material, crosslinking
Blend easily forms side chain and network structure afterwards, is conducive to improving the tensile strength and elongation at break of blend, meanwhile, ternary
The thermo-oxidative stability of EP rubbers is higher than polypropylene, and weak with oxygen binding ability, after oxidation, the fine and close cross-linked layer of formation can
Suppress the diffusion of oxygen, therefore can also to a certain extent suppress polyacrylic rates of oxidative degradation；Talcum powder is one kind by stratiform
The mineral of silicate crystal composition, are had heat-resist using the polypropylene of talc, and shrinkage factor is low, dimensional stability
Well, the characteristics of hardness is high；Because the compatibility at interface between talcum powder and polypropylene two-phase is not strong, the compatibility between them is asked
Topic often leads to polyacrylic impact property reduction, and the addition of compatilizer can improve compatible between talcum powder and polypropylene
Property；The addition of dispersant can improve dispersity of the talcum powder in high polymer base-material, so as to improve composite
Physical and mechanical property；The addition of eliminating smell agent can effectively be mitigated or eliminated because of plastic additive and plastics that residual monomer causes in itself
Stink or peculiar smell, the characteristics of with low VOC emission；The addition of coupling agent can have an effect with the hydroxyl on talcum powder surface,
Strong chemical bonding is formed, makes talcum powder surface with coupling agent, and another part of coupling agent and polyacrylic compatibility
Preferably, so as to improve talcum powder with polyacrylic compatibility；Through its process small molecular of polypropylene material obtained in the formula
Content is low in the presence of eliminating smell agent, reduce further the discharge capacity of VOC, the characteristics of make it have tasteless, in activated talc
In the presence of powder and coupling agent, dispersant, compatilizer, polyacrylic wearability is improved, make it have good mechanics strong
Degree, by ethylene propylene diene rubber, while polypropylene toughness is lifted, further improves mobility, has the polypropylene
The characteristics of having high-wearing feature, high tenacity and low VOC emission amount.
Preferably, the polypropylene is atactic copolymerized polypropene, the mass fraction of ethylene in the polypropylene accounts for poly- third
The 6~8% of alkene total mass fraction.
By using above-mentioned technical proposal, atactic copolymerized polypropene by propylene monomer and a small amount of vinyl monomer heating,
Copolymerization is obtained under pressurization and catalyst action, and vinyl monomer randomly, is randomly distributed in the long-chain of propylene, reduces polymerization
The fusing point of the crystallinity of thing, polyacrylic impact, resistance to hydrostatic pressure, heat-resisting oxygen, ageing-resistant performance are improved, to polyacrylic power
Learn performance and processing characteristics all has an impact, improve polyacrylic intensity and low-temperature flexibility.
Preferably, the mass fraction of ethylene in the ethylene propylene diene rubber accounts for the 63 of ethylene propylene diene rubber total mass fraction
~73%.
By using above-mentioned technical proposal, with the increase of ethylene contents, the unit volume internal double bond of ethylene propylene diene rubber
Increase, intermolecular force increases, its hardness, tensile strength, tearing strength and rebound value are in totally increase tendency, can be lifted
The degree of cross linking between polypropylene and ethylene propylene diene rubber, while compatibilization effect can be lifted.
Preferably, the mesh number of the talcum powder is 1250 mesh.
By using above-mentioned technical proposal, talcum powder mesh number is excessive, and talcum powder blanking can be caused difficult, and high mesh number cunning
Easily there is agglomeration in stone flour, very big on the influence of polyacrylic elongation at break, and mesh number is the talcum powder of 1250 mesh, cost performance
Preferably, it is possible to increase tensile strength, impact strength etc., the flatness for improving material can also reduces cost.
Preferably, the compatilizer is EPDM-g-MAH, PP-g-MAH and POE-g-MAH compounding forming.
By using above-mentioned technical proposal, EPDM-g-MAH can not only be improved on the premise of Miscibility is improved
Polyacrylic toughness, can also be obviously improved its coating performance, can direct spraying lacquer painting；The functional group of coupling agent with it is nonpolar
Then hardly possible has stronger interaction between polyacrylic polymer, and the interface modification effect using PP-g-MAH is preferable, makes composite
Elongation at break substantially reduce, more preferable comprehensive mechanical property can be obtained, POE-g-MAH can further lift the phase of system
Capacitive and toughness, using compounding compatilizer, can compensate for the shortcoming of single compatilizer.
Preferably, it is that 9: 1 compoundings are formed with white oil that the dispersant is ethylene bis stearamide in mass ratio.
By using above-mentioned technical proposal, ethylene bis stearamide can reduce inside system and outer as dispersant
The friction in portion, improves mobility, and with good finish, demoulding after adding white oil, can further lift ethylene double stearic
The dispersion effect of acid amides, while white oil can play the effect of toughness reinforcing ethylene propylene diene rubber, so as to lift the toughness of system.
Preferably, it is that 1: 1 compounding is formed that the eliminating smell agent is the white black and pHydrazinebenzenesulfonic acid of charcoal in mass ratio.
By using above-mentioned technical proposal, the ammonia nitrogen of pHydrazinebenzenesulfonic acid can be with the small molecule thing of discharge in process
Matter is combined, and by the white black adsorption effect of charcoal, reaches the purpose for reducing VOC emission amount, meanwhile, charcoal is black in vain being capable of RPP
Toughness.
Preferably, the coupling agent is silane coupler.
By using above-mentioned technical proposal, silane coupler can form hydrogen bond simultaneously with the hydroxyl reaction on talcum powder surface
Condensation, meanwhile, the silanol of each molecule of silane is associated with each other again, forms the film of network structure, is covered in filler surface, makes its surface
Organise, meanwhile, coupling agent has plasticising, the effect of lubrication, makes system flow processability preferably, is conducive to improving polyacrylic
MI。
Second object of the present invention is to provide a kind of high-wearing feature, high tenacity and the low in-car decorations poly- third of VOC emission amount
The preparation technology of alkene.
Above-mentioned technical purpose of the invention technical scheme is that：
A kind of polyacrylic preparation technology of automotive trim, comprises the following steps：
(1) talcum powder is dried 2 hours at 80 DEG C, and coupling agent mixes 10~15min at 80~90 DEG C, activation is obtained and slides
Stone flour；
(2) polypropylene, ethylene propylene diene rubber, compatilizer, dispersant, eliminating smell agent and activated talc powder is weighed to pour into high mixer,
Speed of agitator is 420~480r/min, stirs 10~15min；
(3) in the material input double screw extruder for completing mixing at 200~240 DEG C, through melting extrusion, granulation.
By using above-mentioned technical proposal, first each component is fully mixed by talcum powder after coupling agent is activated, extruded
Shaping, compared with other forming methods, extruding-out process has production serialization, production efficiency is high, have a wide range of application, low cost
Honest and clean the characteristics of, double screw extruder can promote material to mix, and improve dispersion and the plasticizing effect of mixing material, it is ensured that effluent
Large quantity of moisture and low molecular weight volatile thing in material, can realize steady extruding.
Preferably, the design temperature of the double screw extruder is：190-195 DEG C of head；One 190-200 DEG C of area, two
200-210 DEG C of area, three 210-215 DEG C of areas, four 220-230 DEG C of areas；Five 225-230 DEG C of areas, six 225-230 DEG C of areas, seven area 220-
225 DEG C, eight 200-220 DEG C of areas, rotating speed：380~400r/min.
By using above-mentioned technical proposal, area's temperature is lower, can prevent material from being melted in charge door, it is to avoid material
Blocked in charge door, required temperature is progressively warming up in melt zone, because the mechanical energy heat production such as shearing friction heat, its melt zone
Processing temperature is too high without rising, it is to avoid material is aging and destroy the characteristic of material, the die temperature of outlet setting high point is beneficial into
Type.
In sum, the invention has the advantages that：
1st, the polypropylene material makes talcum powder surface organic by silane coupler activated talc powder, improve talcum powder with
Polyacrylic compatibility, so as to improve polyacrylic impact property, improves the wearability of polypropylene plastics；
2nd, compatibilization and toughening is carried out under synergy of the polypropylene material by ethylene propylene diene rubber and compatilizer, while further
The compatibility between talcum powder and polypropylene is improve, the degree of cross linking between ethylene propylene diene rubber and polypropylene is improved, improved
Polyacrylic bending modulus；
3rd, the polypropylene material is reduced in polypropylene extrusion by the control and improvement to temperature in preparation method and rotating speed
The micromolecular compound produced in forming process, and chela is carried out to the micromolecular compound produced in process by eliminating smell agent
Close and adsorb, further reduce the discharge capacity of VOC；
4th, contain a small amount of white oil in the dispersant of the polypropylene material, while friction in reduction system, play toughness reinforcing ternary
The effect of EP rubbers, so as to further increase polyacrylic toughness.
Specific embodiment
From the base material that atactic copolymerized polypropene is this material, the matter of vinyl monomer in polypropylene is measured through infra-red sepectrometry
Amount fraction is 6%；
It is 70% that the mass fraction for measuring vinyl monomer in ethylene propylene diene rubber through infra-red sepectrometry is accounted for；
From 1250 mesh talcum powder as material inorganic filler；
EPDM-g-MAH, PP-g-MAH and POE-g-MAH in mass ratio 1: 1: 2 is mixed to prepare compatilizer；
By ethylene bis stearamide and white oil in mass ratio for be mixed to prepare dispersant at 9: 1；
By the white black and pHydrazinebenzenesulfonic acid of charcoal in mass ratio for be mixed to prepare eliminating smell agent at 1: 1.
Embodiment one
(1) by 18 parts of drying 2 hours at 80 DEG C of talcum powder, 1.5 parts of mixing 15min of mixing and silane coupler at 80 DEG C,
Activated talc powder is obtained；
(2) 60 parts of polypropylene, 8 parts of ethylene propylene diene rubber, 2 parts of compatilizer, 0.8 part of dispersant, 1.5 parts of eliminating smell agent and step are weighed
(1) obtained activated talc powder is poured into high mixer together in, sets speed of agitator as 420r/min, stirs 15min；
(3) it is by the design temperature of double screw extruder：One 190 DEG C of area, two 200 DEG C of areas, three 210 DEG C of areas, four 220 DEG C of areas；Five
225 DEG C of area, six 225 DEG C of areas, seven 220 DEG C of areas, eight 200 DEG C of areas, 190 DEG C of head, setting speed：380r/min；
(4) will mix in the material input double screw extruder for completing, through melting extrusion, granulate.
Embodiment two
(1) by 23 parts of drying 2 hours at 80 DEG C of talcum powder, 3 parts of mixing 15min of mixing and silane coupler, system at 85 DEG C
Obtain activated talc powder；
(2) 70 parts of polypropylene, 15 parts of ethylene propylene diene rubber, 4 parts of compatilizer, 1.2 parts of dispersant, 2.5 parts of eliminating smell agent and step are weighed
Suddenly obtained activated talc powder is poured into high mixer together in (1), sets speed of agitator as 450r/min, stirs 12min；
(3) it is by the design temperature of double screw extruder：One 200 DEG C of area, two 200 DEG C of areas, three 210 DEG C of areas, four 230 DEG C of areas；Five
230 DEG C of area, six 230 DEG C of areas, seven 220 DEG C of areas, eight 220 DEG C of areas, 190 DEG C of head, setting speed：390r/min；
(4) will mix in the material input double screw extruder for completing, through melting extrusion, granulate.
Embodiment three
(1) by 20 parts of drying 2 hours at 80 DEG C of talcum powder, 3 parts of mixing 10min of mixing and silane coupler, system at 90 DEG C
Obtain activated talc powder；
(2) 60 parts of polypropylene, 15 parts of ethylene propylene diene rubber, 4 parts of compatilizer, 1.0 parts of dispersant, 2.5 parts of eliminating smell agent and step are weighed
Suddenly obtained activated talc powder is poured into high mixer together in (1), sets speed of agitator as 450r/min, stirs 10min；
(3) it is by the design temperature of double screw extruder：One 190 DEG C of area, two 200 DEG C of areas, three 210 DEG C of areas, four 220 DEG C of areas；Five
230 DEG C of area, six 230 DEG C of areas, seven 225 DEG C of areas, eight 200 DEG C of areas, 195 DEG C of head, setting speed：400r/min；
(4) will mix in the material input double screw extruder for completing, through melting extrusion, granulate.
Example IV
(1) by 23 parts of drying 2 hours at 80 DEG C of talcum powder, 1.5 parts of mixing 1Omin of mixing and silane coupler at 80 DEG C,
Activated talc powder is obtained；
(2) 70 parts of polypropylene, 15 parts of ethylene propylene diene rubber, 2 parts of compatilizer, 0.8 part of dispersant, 1.5 parts of eliminating smell agent and step are weighed
Suddenly obtained activated talc powder is poured into high mixer together in (1), sets speed of agitator as 420r/min, stirs 15min；
(3) it is by the design temperature of double screw extruder：One 200 DEG C of area, two 210 DEG C of areas, three 215 DEG C of areas, four 230 DEG C of areas；Five
230 DEG C of area, six 230 DEG C of areas, seven 225 DEG C of areas, eight 220 DEG C of areas, 195 DEG C of head, setting speed：400r/min；
(4) will mix in the material input double screw extruder for completing, through melting extrusion, granulate.
Embodiment five
(1) by 18 parts of drying 2 hours at 80 DEG C of talcum powder, 2.0 parts of mixing 15min of mixing and silane coupler at 80 DEG C,
Activated talc powder is obtained；
(2) 65 parts of polypropylene, 10 parts of ethylene propylene diene rubber, 3 parts of compatilizer, 1.2 parts of dispersant, 2.0 parts of eliminating smell agent and step are weighed
Suddenly obtained activated talc powder is poured into high mixer together in (1), sets speed of agitator as 480r/min, stirs 12min；
(3) it is by the design temperature of double screw extruder：One 195 DEG C of area, two 205 DEG C of areas, three 210 DEG C of areas, four 225 DEG C of areas；Five
225 DEG C of area, six 230 DEG C of areas, seven 220 DEG C of areas, eight 200 DEG C of areas, 190 DEG C of head, setting speed：380r/min；
(4) will mix in the material input double screw extruder for completing, through melting extrusion, granulate.
Embodiment six
(1) by 20 parts of drying 2 hours at 80 DEG C of talcum powder, 2.0 parts of mixing 15min of mixing and silane coupler at 85 DEG C,
Activated talc powder is obtained；
(2) 65 parts of polypropylene, 15 parts of ethylene propylene diene rubber, 3 parts of compatilizer, 1.0 parts of dispersant, 2.5 parts of eliminating smell agent and step are weighed
Suddenly obtained activated talc powder is poured into high mixer together in (1), sets speed of agitator as 450r/min, stirs 10min；
(3) it is by the design temperature of double screw extruder：One 200 DEG C of area, two 205 DEG C of areas, three 210 DEG C of areas, four 220 DEG C of areas；Five
230 DEG C of area, six 230 DEG C of areas, seven 220 DEG C of areas, eight 200 DEG C of areas, 190 DEG C of head, setting speed：400r/min；
(4) will mix in the material input double screw extruder for completing, through melting extrusion, granulate.
6 groups of polypropylene materials are made by above-described embodiment, performance test is carried out, test event and testing standard are as follows：
Density (g/cm3)：Tested according to GB/T 1033.1-2008；
Tensile strength (Mpa)：Tested according to GB/T 1040.2-2006；
Bending strength (Mpa)：Tested according to GB/T 9341-2008；
Bending modulus (Mpa)：Tested according to GB/T 9341-2008；
Heat resistance：Observe whether material deforms, changes colour under 80 DEG C/72h, 90 DEG C/96h according to JF0.-36-2002.
Test result：To sum up, it is optimum embodiment to select embodiment two.
Comparative example one
Comparative example one is embodiment two without polypropylene material obtained in talcum powder.
Comparative example two
Comparative example two is embodiment two without polypropylene material obtained in coupling agent.
Comparative example three
Comparative example three is embodiment two without polypropylene material obtained in compatilizer.
Comparative example four
Comparative example four is embodiment two without polypropylene material obtained in dispersant.
Comparative example five
Comparative example five is commercial polypropylene automobile special material.
6 groups of polypropylene materials are made by above-mentioned comparative example, performance test is carried out, test event and testing standard are ibid.
Test result is as follows：
In sum, understood through experimental data, the polypropylene compared to commercial polypropylene automobile special material, in tensile strength, curved
Bent modulus, bending strength and heat resistance aspect have a certain upgrade.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
Member can make the modification without creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected by Patent Law in the right of invention.
Claims (10)
1. a kind of automotive trim polypropylene, it is characterised in that the automotive trim polypropylene following components composition, each component and
The mass fraction of each component is：60 ~ 70 parts of polypropylene, 8 ~ 15 parts of ethylene propylene diene rubber, 18 ~ 23 parts of talcum powder, compatilizer 2 ~ 4
Part, 0.8 ~ 1.2 part of dispersant, 1.5 ~ 2.5 parts of eliminating smell agent, 1.5 ~ 3 parts of coupling agent.
2. a kind of automotive trim polypropylene according to claim 1, it is characterised in that the polypropylene is poly- for random copolymerization
Propylene, the mass fraction of ethylene in the polypropylene accounts for the 6 ~ 8% of polypropylene total mass fraction.
3. a kind of automotive trim polypropylene according to claim 1, it is characterised in that the second in the ethylene propylene diene rubber
Alkene mass fraction accounts for the 63 ~ 73% of ethylene propylene diene rubber total mass fraction.
4. a kind of automotive trim polypropylene according to claim 1, it is characterised in that the mesh number of the talcum powder is 1250
Mesh.
5. a kind of automotive trim polypropylene according to claim 1, it is characterised in that the compatilizer is EPDM-g-
MAH, PP-g-MAH and POE-g-MAH compounding are formed.
6. a kind of automotive trim polypropylene according to claim 1, it is characterised in that the dispersant is double stearic ethylene
Acid amides is 9 with white oil in mass ratio：1 compounding is formed.
7. a kind of automotive trim polypropylene according to claim 1, it is characterised in that the eliminating smell agent is the white black and hydrazine of charcoal
Base benzene sulfonic acid is 1 in mass ratio：1 compounding is formed.
8. a kind of automotive trim polypropylene according to claim 1, it is characterised in that the coupling agent is silane coupled
Agent.
9. the polyacrylic preparation technology of a kind of automotive trim according to claim any one of 1-8, it is characterised in that including
Following steps：
（1）Talcum powder is dried 2 hours at 80 DEG C, mixing and coupling agent mix 10 ~ 15min at 80 ~ 90 DEG C, and activation is obtained
Talcum powder；
（2）Polypropylene, ethylene propylene diene rubber, compatilizer, dispersant, eliminating smell agent and activated talc powder is weighed to pour into high mixer,
Speed of agitator is 420 ~ 480r/min, stirs 10 ~ 15min；
（3）In the material input double screw extruder that mixing is completed at 190 ~ 230 DEG C, through melting extrusion, granulation.
10. a kind of polyacrylic preparation technology of automotive trim according to claim 9, it is characterised in that the twin-screw
The design temperature of extruder is：190-195 DEG C of head；One 190-200 DEG C of area, two 200-210 DEG C of areas, three 210-215 DEG C of areas,
Four 220-230 DEG C of areas；Five 225-230 DEG C of areas, six 225-230 DEG C of areas, seven 220-225 DEG C of areas, eight 200-220 DEG C of areas, rotating speed：
380~400r/min。
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