CN114874548A - Low-odor and low-emission composite polypropylene material for vehicles and preparation method thereof - Google Patents
Low-odor and low-emission composite polypropylene material for vehicles and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 125
- -1 polypropylene Polymers 0.000 title claims abstract description 115
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 109
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 109
- 239000002131 composite material Substances 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title abstract description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000003463 adsorbent Substances 0.000 claims abstract description 32
- 239000012153 distilled water Substances 0.000 claims abstract description 32
- 239000011256 inorganic filler Substances 0.000 claims abstract description 32
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 32
- 239000012745 toughening agent Substances 0.000 claims abstract description 31
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 30
- 239000000314 lubricant Substances 0.000 claims abstract description 30
- 239000004611 light stabiliser Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 17
- 239000002904 solvent Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 28
- 238000005034 decoration Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 14
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- 238000010008 shearing Methods 0.000 claims description 12
- 238000005303 weighing Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
- 239000000155 melt Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 4
- 239000008116 calcium stearate Substances 0.000 claims description 4
- 235000013539 calcium stearate Nutrition 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 229920002943 EPDM rubber Polymers 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 235000019441 ethanol Nutrition 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims 1
- 229910052623 talc Inorganic materials 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 11
- 238000012986 modification Methods 0.000 abstract description 5
- 230000004048 modification Effects 0.000 abstract description 5
- 239000002861 polymer material Substances 0.000 abstract description 3
- 230000002028 premature Effects 0.000 abstract description 2
- 239000003381 stabilizer Substances 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 13
- 239000002245 particle Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
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- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
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- 239000002994 raw material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
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- 150000002989 phenols Chemical class 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
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- 230000009965 odorless effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
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- 230000002195 synergetic effect Effects 0.000 description 2
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 206010063659 Aversion Diseases 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 206010051246 Photodermatosis Diseases 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
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- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 210000000987 immune system Anatomy 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 150000008301 phosphite esters Chemical class 0.000 description 1
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 230000008845 photoaging Effects 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of modification of high polymer materials, in particular to a low-odor and low-emission composite polypropylene material for vehicles and a preparation method thereof, wherein the low-odor and low-emission composite polypropylene material comprises the following components in parts by weight: polypropylene: 50-65 parts; inorganic filler: 15-20 parts of a stabilizer; toughening agent: 5-15 parts of a solvent; antioxidant: 0.2-0.8 part; lubricant: 0.5-2.0 parts; light stabilizer: 0.2-0.8 part; adsorbent: 0.3-0.5 part; absolute ethanol or distilled water: 2-5 parts. The method comprises the following steps of changing absolute ethyl alcohol or distilled water into steam in the processing process, and partially or completely removing small molecular volatile matters in the composite material through a double-stage vacuum environment of an extruder so as to remove the volatile matters and odorous substances in the material; meanwhile, by adopting side feeding to feed absolute ethyl alcohol or distilled water, the problem of premature volatilization caused by adding from the main feeding port is avoided, and the odor can be removed more effectively.
Description
Technical Field
The invention relates to the technical field of modification of high polymer materials, in particular to a low-odor and low-emission composite polypropylene material for vehicles and a preparation method thereof.
Background
Polypropylene, a thermoplastic resin made by polymerizing propylene. Is a mixture of non-toxic, odorless and tasteless milky white high crystal with the density of only 0.90-0.91 g/cm 3 Is one of the lightest varieties of all plastics at present. It is particularly stable to water, with a water absorption of only 0.01% in water and a molecular weight of about 8 in the case of 15 ten thousand. Good formability and good surface gloss of the product. Polypropylene is widely used in various fields, for example, for interior parts of vehicles, because of its advantages such as excellent performance and low price.
With the expansion of the market for selling Chinese automobiles, people have stronger environmental awareness and safety awareness, and the internal environment of automobiles is concerned. Meanwhile, the air quality standard GB/T27630-2011 'air quality evaluation guideline for vehicles in vehicles' is also provided in China, so that the health and safety of drivers and passengers are protected. Because polypropylene raw material production, material high-temperature processing decomposition and addition of an auxiliary agent can generate and remain some small molecules which cannot be discharged, the polypropylene material and a product thereof can release volatile organic compounds and odor to different degrees. Interior parts of vehicles also become main pollution sources in the vehicles, and toxic gases such as formaldehyde, dimethylbenzene and the like emitted from the interior parts of the vehicles can damage human organs, respiratory systems, immune systems and the like. Nowadays, odor standards are available for the public and for the benefits, and the host factories also select materials meeting the odor standards. Therefore, research and development of low-odor and low-emission polypropylene materials to meet the requirements of green and environment-friendly materials are important for the industry.
Currently, in the research on low-odor and low-emission polypropylene materials, chemical reaction, physical adsorption, vacuum volatilization and baking are mostly used to improve the odor and emission problems of the polypropylene materials. However, the odor and VOC of the material cannot be fundamentally improved, and a double pressure of cycle time and cost is brought.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the composite polypropylene material for the vehicle and the preparation method thereof are provided, so that the odor can be more effectively removed, and the odor and TVOC of the material can be fundamentally improved.
One of the purposes of the invention is to provide a low-odor and low-emission composite polypropylene material for vehicles, which can remove odor micromolecules to the maximum extent through the synergistic effect of a plurality of modes and substances on the premise of ensuring the mechanical property of the material, and has the advantages of environment-friendly production process and simple process.
In order to achieve the purpose, the invention adopts the technical scheme that: the low-odor and low-emission composite polypropylene material for the vehicle comprises the following components in parts by weight:
polypropylene: 50-65 parts;
inorganic filler: 15-20 parts of a solvent;
a toughening agent: 5-15 parts of a solvent;
antioxidant: 0.2-0.8 part;
lubricant: 0.5-2.0 parts;
light stabilizer: 0.2-0.8 part;
adsorbent: 0.3-0.5 part;
absolute ethanol or distilled water: 2-5 parts.
Preferably, the polypropylene is a polypropylene material which is produced by a hydrogen regulation process and has a melt index of 10-50 g/10min under the test conditions that the temperature is 230 ℃ and the load is 2.16 kg. The polymer is a non-toxic, odorless and tasteless milky white crystal polymer, has high crystallinity and regular structure, and therefore has excellent mechanical properties. The invention can make the selected raw materials better adapt to the requirements of the processing technology by determining the melt flow rate and screening the proper polypropylene raw materials, thereby achieving the effect of improving the molding reliability and quality of the polypropylene composite material.
Preferably, the inorganic filler is one or more of talcum powder, calcium carbonate and barium sulfate. The inorganic filler is added into the formula of the low-odor and low-emission composite polypropylene material for the vehicle in the form of powder or master batch. The inorganic filler can form uniformly distributed micropores on the surface of the polypropylene base material to form physical adsorption points, reduce the diffusion characteristic and odor grade of the polypropylene material and improve the dimensional stability of the material.
Preferably, the toughening agent is one or more of POE, EVA, PE and EPDM. The density of the powder is 0.86-0.90 g/cm 3 The addition of the toughening agent obviously improves the stress whitening resistance of the material, and meanwhile, the material has better scratch resistance and can meet the requirements of automotive interior parts; meanwhile, the toughening agent can play a role in reducing the brittleness of the polypropylene composite material and increasing the toughness. The melt flow rate is ensured to be 0.5-6 g/10min under the test conditions that the temperature is 230 ℃ and the load is 2.16kg, so that the selected raw materials can better adapt to the requirements of the processing technology, and the effect of improving the comprehensive performance of the polypropylene composite material is achieved.
Preferably, the antioxidant is a mixture of hindered phenols and phosphites. The weight portion proportion of the mixture is 1: 2. the hindered phenol antioxidant is a phenol compound with a steric hindered structure. The main types of tether terminating antioxidants. They are generally classified into monohydric hindered phenols and polyhydric hindered phenols according to the number of hindered phenol functional groups in the molecule. Hindered phenol antioxidants are mostly used in plastic products, and show synergistic effects with auxiliary antioxidants such as phosphite esters, thioether and the like. The phosphite antioxidant is one of protection antioxidants, and generates stable inactive products by decomposing peroxide generated in the oxidation process, thereby delaying the oxidation process of high polymer materials, prolonging the service life of the products, protecting the environment, having no toxicity, no phenol, resisting hydrolysis, specializing and resisting high temperature. The two components are used together, so that the oxidation process of the polymer can be delayed or inhibited, and the effects of preventing the aging of the polymer and prolonging the service life of the polymer are achieved.
Preferably, the lubricant is one or more of ethylene bis stearamide, polyethylene wax and calcium stearate. The lubricant can effectively reduce the friction among partial molecules in the melt, between the melt and a screw, and between the melt and the inner wall of the extruder, so that the chain scission degradation of polypropylene is reduced from the source, and the content of small molecule organic volatile matter residues is reduced. Preferably, the lubricant is calcium stearate, components of the mixture are degraded in the double-screw extrusion process to generate odor small molecules and acidic substances, the free acidic substances can further catalyze the degradation of the mixture to generate more odor small molecules, and the calcium stearate can adsorb the free acidic substances to slow down the degradation of the mixture, so that the formation of the odor small molecules is fundamentally prevented, the low odor of the material is further ensured, the degradation of the mixture is slowed down, and the mechanical property of the material is further ensured.
Preferably, the light stabilizer is an ultraviolet absorber. The ultraviolet absorbent is an additive of a high molecular product, can shield or absorb the energy of ultraviolet rays, quench singlet oxygen, decompose hydroperoxide into inactive substances and the like, can eliminate or slow down photochemical reaction possibility of the high molecular polymer under the radiation of light, and prevent or delay the photoaging process, thereby achieving the purpose of prolonging the service life of the high molecular polymer product.
Preferably, the adsorbent is porous inorganic diatomite which has a multilayer structure and is a porous adsorption material with high porosity and high specific surface area, and the porous inorganic diatomite can effectively adsorb low-molecular volatile matters generated in the extrusion modification process of the polypropylene material and effectively devolatilize in the post-treatment of the modified polypropylene material, so that the odor property and the emission property of the modified polypropylene material are improved. The aperture of the adsorbent is 10 um-50 um. If the pore size is too small to be adsorbed, and the pore size is too large, small molecules are easily detached.
Preferably, the absolute ethanol is analytically pure ethanol. The invention adopts absolute ethyl alcohol or distilled water as devolatilization substance, which has lower price and wider source than the traditional active carbon and molecular sieve materials.
The invention also aims to provide a preparation method of the composite polypropylene material for the vehicle with low odor and low emission, and the preparation method has the same technical effect.
A preparation method of a low-odor and low-emission composite polypropylene material for vehicles comprises the following operation steps,
(1) accurately weighing the polypropylene, the inorganic filler, the toughening agent, the antioxidant, the lubricant, the light stabilizer and the adsorbent according to the proportion, and putting the materials into a high-speed mixer to be fully stirred for 5-10 minutes; the rotating speed of the high-speed mixer is 200-300 revolutions per minute.
(2) Adding the material mixed in the step (1) into a double-screw extruder with the length-diameter ratio of about 40, arranging a filter screen at the head position of the double-screw extruder to remove large-particle impurities, and preventing the large-particle impurities from being introduced by the filter screen, so that the mechanical strength of the material is ensured not to be reduced, and the thermal oxidation aging failure caused by the impurities can be effectively avoided.
(3) Absolute ethyl alcohol or distilled water is fed from a side feeding port, and the mixture is extruded by shearing, melting and blending, wherein the processing temperature range of a double-screw extruder is as follows: at 210-220 ℃, the vacuum degree is less than or equal to-0.06 MPa; the rotating speed range of the screw is 350-600 revolutions per minute; the vacuum pumping step can greatly improve the devolatilization effect of the organic volatile matters; if the vacuum degree is not enough, steam and small molecule volatile matters are not completely pumped out, and the devolatilization effect is not obvious.
(4) And granulating, drying and cooling the material strips extruded by the parallel double-screw extruder to obtain the low-odor and low-emission composite polypropylene material for vehicle interior decoration. The extrusion granulation process and equipment of the low-odor and low-emission composite polypropylene material for vehicle interior decoration have strict requirements, and the heating temperature of the first section and the second section of the double-screw extruder is controlled to be 35-45 ℃. The temperature is prevented from exceeding the boiling point of distilled water or absolute ethyl alcohol, so that the distilled water or absolute ethyl alcohol is vaporized in advance, and the devolatilization effect is further influenced.
The invention has the beneficial effects that:
(1) according to the invention, absolute ethyl alcohol or distilled water is changed into steam in the processing process, and small molecular volatile matters in the composite material are partially or completely carried away in a double-stage vacuum environment of an extruder, so that the volatile matters and odorous substances in the material are removed; meanwhile, by adopting side feeding to feed absolute ethyl alcohol or distilled water, the problem of premature volatilization caused by adding from the main feeding port is avoided, and the odor can be removed more effectively.
(2) According to the invention, the porous inorganic diatomite is introduced into the formula system as the adsorbent, so that volatilization of small molecular residues can be inhibited in the use process of the material, and the effects of long-acting low emission and low odor are kept. And then, by combining a vacuumizing device on a parallel double-screw extruder and a material drying process, granulating, drying and cooling the extruded material strips, further removing volatile matters and odorous substances, and reducing the emission characteristic and odor grade of the material. So that the prepared composite polypropylene material for the vehicle meets the ROSH standard; meanwhile, the residual volatile matter is prevented from volatilizing by the adsorbent in the composite polypropylene material, so that the aims of low odor and low emission are fulfilled.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the specific embodiments, features and effects of the laser-markable MCA flame retardant reinforced PA6 material and the preparation method thereof according to the present invention are described in detail below.
Sources of materials in specific embodiments:
| material composition | Model number | From commercial sources |
| Polypropylene | PPBH3820 | SK Global Chemical Co.,Ltd. |
| Inorganic filler | KC6300 | North sea group Ltd |
| Toughening agent | POE8150 | Dow Chemical Co.,Ltd. |
| Antioxidant agent | 1010 | BASF CHINA Co.,Ltd. |
| Lubricant agent | CAST | Hair-base chemical Co Ltd |
| Light stabilizers | 2020 | Kittuy chemical Co Ltd |
| Adsorbent and process for producing the same | Diatomite | Selite diatomaceous Earth Ltd |
| Absolute ethyl alcohol or distilled water | / | Laboratory self-control |
Example 1:
a low-odor and low-emission composite polypropylene material for vehicles comprises the following components in parts by weight:
polypropylene: 61 parts; inorganic filler: 20 parts of (1); a toughening agent: 10 parts of (A); antioxidant: 0.3 part; lubricant: 1 part; light stabilizer: 0.3 part; adsorbent: 0.3 part; absolute ethanol or distilled water: 2 parts of (1);
a preparation method of a low-odor and low-emission composite polypropylene material for vehicles comprises the following operation steps:
(1) accurately weighing the polypropylene, the inorganic filler, the toughening agent, the antioxidant, the lubricant, the light stabilizer and the adsorbent according to the proportion, and putting the mixture into a high-speed mixer with the rotating speed of 200 revolutions per minute to fully stir for 10 minutes;
(2) adding the mixed materials into a double-screw extruder with the length-diameter ratio of about 40, and arranging a filter screen at the head of the double-screw extruder to remove large-particle impurities;
(3) feeding absolute ethyl alcohol or distilled water from the side, and extruding by shearing, melting and blending, wherein the processing temperature of a double-screw extruder is 220 ℃, and the vacuum degree is less than or equal to-0.06 MPa; the rotating speed range of the screw is 500 revolutions per minute;
(4) and granulating, drying and cooling the material strips extruded by the parallel double-screw extruder to obtain the low-odor and low-emission composite polypropylene material for vehicle interior decoration.
Example 2:
a low-odor and low-emission composite polypropylene material for vehicles comprises the following components in parts by weight:
polypropylene: 65 parts of (1); inorganic filler: 20 parts of (1); a toughening agent: 15 parts of (1); antioxidant: 0.8 part; lubricant: 1.5 parts; light stabilizer: 0.8 part; adsorbent: 0.4 part; distilled water: 5 parts of a mixture;
a preparation method of a low-odor and low-emission composite polypropylene material for vehicles comprises the following operation steps:
(1) accurately weighing the polypropylene, the inorganic filler, the toughening agent, the antioxidant, the lubricant, the light stabilizer and the adsorbent according to the proportion, and putting the mixture into a high-speed mixer with the rotating speed of 300 revolutions per minute to fully stir for 5 minutes;
(2) adding the mixed materials into a double-screw extruder with the length-diameter ratio of about 40, and arranging a filter screen at the head of the double-screw extruder to remove large-particle impurities;
(3) feeding absolute ethyl alcohol or distilled water from the side, and extruding by shearing, melting and blending, wherein the processing temperature of a double-screw extruder is 220 ℃, and the vacuum degree is less than or equal to-0.06 MPa; the rotating speed range of the screw is 500 revolutions per minute;
(4) and granulating, drying and cooling the material strips extruded by the parallel double-screw extruder to obtain the low-odor and low-emission composite polypropylene material for vehicle interior decoration.
Example 3:
a low-odor and low-emission composite polypropylene material for vehicles comprises the following components in parts by weight:
polypropylene: 50 parts of a mixture; inorganic filler: 15 parts of a mixture; a toughening agent: 6 parts of (1); antioxidant: 0.3 part; lubricant: 0.5 part; light stabilizer: 0.6 part; adsorbent: 0.5 part; absolute ethanol or distilled water: 4 parts of a mixture;
a preparation method of a low-odor and low-emission composite polypropylene material for vehicles comprises the following operation steps:
(1) accurately weighing the polypropylene, the inorganic filler, the toughening agent, the antioxidant, the lubricant, the light stabilizer and the adsorbent according to the proportion, and putting the mixture into a high-speed mixer with the rotating speed of 250 revolutions per minute to fully stir for 8 minutes;
(2) adding the mixed materials into a double-screw extruder with the length-diameter ratio of about 40, and arranging a filter screen at the head of the double-screw extruder to remove large-particle impurities;
(3) feeding absolute ethyl alcohol or distilled water from the side, and extruding by shearing, melting and blending, wherein the processing temperature of a double-screw extruder is 220 ℃, and the vacuum degree is less than or equal to-0.06 MPa; the rotating speed range of the screw is 400 revolutions per minute;
(4) and granulating, drying and cooling the material strips extruded by the parallel double-screw extruder to obtain the low-odor and low-emission composite polypropylene material for vehicle interior decoration.
Example 4:
a low-odor and low-emission composite polypropylene material for vehicles comprises the following components in parts by weight:
polypropylene: 56 parts of; inorganic filler: 20 parts of (1); a toughening agent: 7 parts; antioxidant: 0.5 part; lubricant: 2 parts of (1); light stabilizer: 0.2 part; adsorbent: 0.4 part; absolute ethanol or distilled water: 3 parts of a mixture;
a preparation method of a low-odor and low-emission composite polypropylene material for vehicles comprises the following operation steps:
(1) accurately weighing the polypropylene, the inorganic filler, the toughening agent, the antioxidant, the lubricant, the light stabilizer and the adsorbent according to the proportion, and putting the mixture into a high-speed mixer with the rotating speed of 200 revolutions per minute to fully stir for 8 minutes;
(2) adding the mixed materials into a double-screw extruder with the length-diameter ratio of about 40, and arranging a filter screen at the head of the double-screw extruder to remove large-particle impurities;
(3) feeding absolute ethyl alcohol or distilled water from the side, and extruding by shearing, melting and blending, wherein the processing temperature of a double-screw extruder is 210 ℃, and the vacuum degree is less than or equal to-0.06 MPa; the rotating speed range of the screw is 500 revolutions per minute;
(4) and granulating, drying and cooling the material strips extruded by the parallel double-screw extruder to obtain the low-odor and low-emission composite polypropylene material for vehicle interior decoration.
Example 5:
a low-odor and low-emission composite polypropylene material for vehicles comprises the following components in parts by weight:
polypropylene: 53 parts of a mixture; inorganic filler: 15 parts of (1); a toughening agent: 9 parts of (1); antioxidant: 0.4 part; lubricant: 1 part; light stabilizer: 0.5 part; adsorbent: 0.4 part; absolute ethanol or distilled water: 3 parts of a mixture;
a preparation method of a low-odor and low-emission composite polypropylene material for vehicles comprises the following operation steps:
(1) accurately weighing the polypropylene, the inorganic filler, the toughening agent, the antioxidant, the lubricant, the light stabilizer and the adsorbent according to the proportion, and putting the mixture into a high-speed mixer with the rotating speed of 200 revolutions per minute to fully stir for 10 minutes;
(2) adding the mixed materials into a double-screw extruder with the length-diameter ratio of about 40, and arranging a filter screen at the head of the double-screw extruder to remove large-particle impurities;
(3) feeding absolute ethyl alcohol or distilled water from the side, and extruding by shearing, melting and blending, wherein the processing temperature of a double-screw extruder is 220 ℃, and the vacuum degree is less than or equal to-0.06 MPa; the rotating speed range of the screw is 500 revolutions per minute;
(4) and granulating, drying and cooling the material strips extruded by the parallel double-screw extruder to obtain the low-odor and low-emission composite polypropylene material for vehicle interior decoration.
Comparative example 1:
a low-odor and low-emission composite polypropylene material for vehicles comprises the following components in parts by weight:
polypropylene: 61 parts; inorganic filler: 5 parts of a mixture; a toughening agent: 10 parts of (A); antioxidant: 0.3 part; lubricant: 1 part; light stabilizer: 0.3 part; adsorbent: 0.3 part; absolute ethanol or distilled water: 2 parts of (1);
a preparation method of a low-odor and low-emission composite polypropylene material for vehicles comprises the following operation steps:
(1) accurately weighing the polypropylene, the inorganic filler, the toughening agent, the antioxidant, the lubricant, the light stabilizer and the adsorbent according to the proportion, and putting the mixture into a high-speed mixer with the rotating speed of 200 revolutions per minute to fully stir for 10 minutes;
(2) adding the mixed materials into a double-screw extruder with the length-diameter ratio of about 40, and arranging a filter screen at the head of the double-screw extruder to remove large-particle impurities;
(3) feeding absolute ethyl alcohol or distilled water from the side, and extruding by shearing, melting and blending, wherein the processing temperature of a double-screw extruder is 220 ℃, and the vacuum degree is less than or equal to-0.06 MPa; the rotating speed range of the screw is 500 revolutions per minute;
(4) and granulating, drying, baking and cooling the material strips extruded by the parallel double-screw extruder to obtain the low-odor and low-emission composite polypropylene material for vehicle interior decoration.
Comparative example 2
A low-odor and low-emission composite polypropylene material for vehicles comprises the following components in parts by weight:
polypropylene: 61 parts; inorganic filler: 20 parts of (1); antioxidant: 0.3 part; lubricant: 1 part; light stabilizer: 0.3 part; adsorbent: 0.3 part; absolute ethanol or distilled water: 2 parts of (1);
a preparation method of a low-odor and low-emission composite polypropylene material for vehicles comprises the following operation steps:
(1) accurately weighing the polypropylene, the inorganic filler, the antioxidant, the lubricant, the light stabilizer and the adsorbent according to the proportion, and putting the mixture into a high-speed mixer with the rotating speed of 200 revolutions per minute to fully stir for 10 minutes;
(2) adding the mixed materials into a double-screw extruder with the length-diameter ratio of about 40, and arranging a filter screen at the head of the double-screw extruder to remove large-particle impurities;
(3) feeding absolute ethyl alcohol or distilled water from the side, and extruding by shearing, melting and blending, wherein the processing temperature of a double-screw extruder is 220 ℃, and the vacuum degree is less than or equal to-0.06 MPa; the rotating speed range of the screw is 500 revolutions per minute;
(4) and granulating, drying and cooling the material strips extruded by the parallel double-screw extruder to obtain the low-odor and low-emission composite polypropylene material for vehicle interior decoration.
Comparative example 3:
a low-odor and low-emission composite polypropylene material for vehicles comprises the following components in parts by weight:
polypropylene: 61 parts; inorganic filler: 20 parts of (1); a toughening agent: 10 parts of (A); lubricant: 1 part; adsorbent: 0.3 part; absolute ethanol or distilled water: 2 parts of (1);
a preparation method of a low-odor and low-emission composite polypropylene material for vehicles comprises the following operation steps:
(1) accurately weighing the polypropylene, the inorganic filler, the toughening agent, the lubricant and the adsorbent in proportion, and putting the mixture into a high-speed mixer with the rotating speed of 200 revolutions per minute to fully stir for 10 minutes;
(2) adding the mixed materials into a double-screw extruder with the length-diameter ratio of about 40, and arranging a filter screen at the head of the double-screw extruder to remove large-particle impurities;
(3) feeding absolute ethyl alcohol or distilled water from the side, and extruding by shearing, melting and blending, wherein the processing temperature of a double-screw extruder is 220 ℃, and the vacuum degree is less than or equal to-0.06 MPa; the rotating speed range of the screw is 500 revolutions per minute;
(4) and granulating, drying and cooling the material strips extruded by the parallel double-screw extruder to obtain the low-odor and low-emission composite polypropylene material for vehicle interior decoration.
Comparative example 4:
a low-odor and low-emission composite polypropylene material for vehicles comprises the following components in parts by weight:
polypropylene: 61 parts; inorganic filler: 20 parts of (1); a toughening agent: 10 parts of (A); antioxidant: 0.3 part; lubricant: 1 part; light stabilizer: 0.3 part; absolute ethanol or distilled water: 2 parts of (1);
a preparation method of a low-odor and low-emission composite polypropylene material for vehicles comprises the following operation steps:
(1) accurately weighing the polypropylene, the inorganic filler, the toughening agent, the antioxidant, the lubricant and the light stabilizer in proportion, and putting the mixture into a high-speed mixer with the rotating speed of 200 revolutions per minute to fully stir for 10 minutes;
(2) adding the mixed materials into a double-screw extruder with the length-diameter ratio of about 40, and arranging a filter screen at the head of the double-screw extruder to remove large-particle impurities;
(3) feeding absolute ethyl alcohol or distilled water from the side, and extruding by shearing, melting and blending, wherein the processing temperature of a double-screw extruder is 220 ℃, and the vacuum degree is less than or equal to-0.06 MPa; the rotating speed range of the screw is 500 revolutions per minute;
(4) and granulating, drying and cooling the material strips extruded by the parallel double-screw extruder to obtain the low-odor and low-emission composite polypropylene material for vehicle interior decoration.
Comparative example 5:
a low-odor and low-emission composite polypropylene material for vehicles comprises the following components in parts by weight:
polypropylene: 61 parts; inorganic filler: 20 parts of (1); a toughening agent: 10 parts of (A); antioxidant: 0.3 part; lubricant: 1 part; light stabilizer: 0.3 part; adsorbent: 0.3 part;
a preparation method of a low-odor and low-emission composite polypropylene material for vehicles comprises the following operation steps:
(1) accurately weighing the polypropylene, the inorganic filler, the toughening agent, the antioxidant, the lubricant, the light stabilizer and the adsorbent according to the proportion, and putting the mixture into a high-speed mixer with the rotating speed of 200 revolutions per minute for fully stirring for 10 minutes;
(2) adding the mixed materials into a double-screw extruder with the length-diameter ratio of about 40, and arranging a filter screen at the head of the double-screw extruder to remove large-particle impurities;
(3) extruding by shearing, melting and blending, wherein the processing temperature of a double-screw extruder is 220 ℃, and the vacuum degree is less than or equal to-0.06 MPa; the rotating speed range of the screw is 500 revolutions per minute;
(4) and granulating, drying and cooling the material strips extruded by the parallel double-screw extruder to obtain the low-odor and low-emission composite polypropylene material for vehicle interior decoration.
Performance results
In the above examples and comparative examples, the properties were tested as follows:
1. tensile strength, flexural modulus, izod notched impact strength were as follows IS0527-2:2012, ISO 178: 2019. ISO180-1: 2010.
2. The odor is tested according to the standard of PV3900 odor experiment of parts in automobile carriages of the general public in Shanghai, and the testing method comprises the following steps:
(1) placing 20g of the granulated material in a 1L odor test bottle;
(2) placing in an oven at 80 ℃ for 2h, taking out the bottle, cooling to 60 ℃, and then beginning to evaluate the smell;
(3) odor rating method, odor rating was calibrated according to the odor rating scale made in the following table.
| Grade | Description of the smell |
| 1 | Can not feel |
| 2 | Can be felt without disturbing the human body |
| 3 | Can be clearly sensed without disturbing the human body |
| 4 | Disturbing the human body |
| 5 | Strong aversion to cold |
| 6 | Are difficult to tolerate |
3. The total carbon content (TVOC) of the organic volatiles was tested according to the Shanghai Volkswagen PV3341 "organic Compounds emission" standard in units of μ gC/g.
The results of the examples are as follows:
comparative example 1 compared with example 1, the amount of the inorganic filler was too small, and the data result shows that the notched Izod impact strength was reduced by 17KJ/M 2 The introduction of the inorganic filler can form uniformly distributed micropores on the surface of the polypropylene base material, thereby improving the dimensional stability of the material and further improving the strength of the composite polypropylene material for vehicles.
Comparative example 2 phaseAs for example 1, the tensile strength and flexural modulus are slightly improved compared with example 1 without adding the toughening agent, but the Izod notch impact strength is reduced by 18KJ/M 2 The toughening agent can reduce the brittleness of the polypropylene composite material and increase the toughness. The toughness of the material is reduced without adding a toughening agent, so that the material is brittle.
Comparative example 3 compared with example 1, without adding antioxidant and light stabilizer, it can be seen from the data that the tensile strength and flexural modulus are slightly improved compared with example 1, but the notched Izod impact strength is reduced by 18.5KJ/M 2 The antioxidant and the light stabilizer can retard or inhibit the oxidation process of the polymer, and achieve the effects of preventing the aging of the polymer and prolonging the service life of the polymer.
Comparative example 4 compared to example 1, without the addition of the adsorbent, it can be seen from the data that the tensile strength and flexural modulus are slightly improved compared to example 1, but the izod notched impact strength is reduced by 12KJ/M 2 And the odor grade is 3.6, which shows that the introduction of the adsorbent can effectively adsorb low-molecular volatiles generated in the extrusion modification process of the polypropylene material and effectively devolatilize in the post-treatment of the modified polypropylene material, thereby improving the odor property and the emission property of the modified polypropylene material.
Comparative example 5 compared to example 1, without adding absolute ethanol or distilled water, it can be seen from the data that the tensile strength and flexural modulus are slightly improved compared to example 1, but the izod notched impact strength is reduced by 13KJ/M 2 The odor rating is 3.65, so that odor remains in the molecule, affecting odor dispersion in the material.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The composite polypropylene material for the low-odor and low-emission vehicle interior decoration is characterized by comprising the following components in parts by weight:
polypropylene: 50-65 parts;
inorganic filler: 15-20 parts of a solvent;
a toughening agent: 5-15 parts of a solvent;
antioxidant: 0.2-0.8 part;
lubricant: 0.5-2.0 parts;
light stabilizer: 0.2-0.8 part;
adsorbent: 0.3-0.5 part;
absolute ethanol or distilled water: 2-5 parts.
2. The low-odor and low-emission composite polypropylene material for vehicle interior decoration according to claim 1, wherein the polypropylene is a polypropylene material produced by a hydrogen blending process and has a melt index of 10-50 g/10 min.
3. The low odor, low emission composite polypropylene material for vehicle interior trim according to claim 1, wherein the inorganic filler is one or more of talc, calcium carbonate, barium sulfate.
4. The low odor, low emission composite polypropylene material for vehicle interior trim of claim 1 wherein the toughening agent is one or more of POE, EVA, PE, EPDM.
5. The low-odor and low-emission composite polypropylene material for vehicle interior trim according to claim 1, wherein the antioxidant is a hindered phenol compound or a phosphite ester compound, and the weight ratio of the antioxidant to the phosphite ester compound is 1: 2.
6. the low odor, low emission composite polypropylene material for vehicle interior trim according to claim 1, wherein the lubricant is one or more of ethylene bis stearamide, polyethylene wax and calcium stearate.
7. The low odor, low emission composite polypropylene material for vehicle interior trim according to claim 1, wherein the light stabilizer is an ultraviolet absorber.
8. The low-odor and low-emission composite polypropylene material for vehicle interior decoration according to claim 1, wherein the adsorbent is porous inorganic diatomite, and the pore size of the adsorbent is 10-50 um.
9. The low odor, low emission composite polypropylene material for vehicle interior trim according to claim 1, wherein the absolute ethanol is analytically pure ethanol.
10. The method for preparing the composite polypropylene material for low-odor and low-emission vehicle interior according to claim 1, comprising the following steps,
(1) accurately weighing the polypropylene, the inorganic filler, the toughening agent, the antioxidant, the lubricant, the light stabilizer and the adsorbent according to the proportion, and putting the materials into a high-speed mixer for fully stirring for 5-10 minutes;
(2) adding the material mixed in the step (1) into a double-screw extruder with the length-diameter ratio of 25-40;
(3) absolute ethyl alcohol or distilled water is fed from a side feeding port, and the mixture is extruded by shearing, melting and blending, wherein the processing temperature range of a double-screw extruder is as follows: at 210-220 ℃, the vacuum degree is less than or equal to-0.06 MPa; the rotating speed range of the screw is 350-600 revolutions per minute;
(4) and granulating, drying and cooling the material strips extruded by the parallel double-screw extruder to obtain the low-odor and low-emission composite polypropylene material for vehicle interior decoration.
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