CN103589072A - Low-VOC (Volatile Organic Compound) polypropylene composite material for automotive interior parts and preparation method thereof - Google Patents

Low-VOC (Volatile Organic Compound) polypropylene composite material for automotive interior parts and preparation method thereof Download PDF

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CN103589072A
CN103589072A CN201310504767.3A CN201310504767A CN103589072A CN 103589072 A CN103589072 A CN 103589072A CN 201310504767 A CN201310504767 A CN 201310504767A CN 103589072 A CN103589072 A CN 103589072A
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composite material
polypropylene composite
low voc
material according
low
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CN103589072B (en
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林经萍
周素蓉
闫溥
张奎
高勇
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Orinko Advanced Plastics Co Ltd
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HEFEI ORINKO PLASTICS GROUP CO Ltd
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • B29C2948/92514—Pressure
    • 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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE

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  • Mechanical Engineering (AREA)
  • 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 a low-VOC (Volatile Organic Compound) polypropylene composite material for automotive interior parts and a preparation method thereof. The preparation method of the low-VOC polypropylene composite material comprises the following steps: mixing polypropylene, high density polyethylene resin, a filler, a toughening agent, an odor absorbent, an antioxidant, a lubricant and a light stabilizer in parts by weight, pelleting by using a double-vacuum parallel double-screw extruder, and finally drying pellets in a drying oven. The polypropylene composite material prepared by the method is low in VOC content, accords with in-vehicle air quality evaluation guide technical requirements and can be applied to the automotive interior parts; the application range of the polypropylene composite material is widened; the production cost of automobiles is reduced by using the polypropylene composite material; and the polypropylene composite material meets the lightweight requirements of automobiles.

Description

A kind of low VOC polypropylene composite material for automotive upholstery and preparation method thereof
Technical field
The present invention relates to technical field of macromolecules, be specifically related to a kind of low VOC polypropylene composite material for automotive upholstery and preparation method thereof.
 
Background technology
Polypropylene is because synthetic method is simple, and have raw material sources abundant, cheap, have good physical and mechanical property and processing characteristics, thereby become one of kind that plastics increase of production is the fastest, its output accounts for the 3rd in five large general-purpose plastics.
Good Heat-resistance, the counter-bending fatigability of polypropylene (PP) are good, price is low, is widely used in automobile industry.But the shortcomings such as PP impelling strength is low and creep resistance is poor, molding shrinkage is large, dimensional stability is bad; Particularly polypropylene composite material generally also contains certain smell, and smell source is mainly the micromolecular compound from the dissolvent residual adding in catalyst residue, monomeric compound production process in polymerization process and the generation of the thermal-oxidative degradation in the course of processing.It has had a strong impact on in-car air quality, and serious prosperous meeting injury officer and passenger inside the vehicle's is healthy.Above-mentioned drawbacks limit the use of polypropylene composite material, especially limited the use on the goods that polypropylene has relatively high expectations at smell, particularly, to placing out of doors for a long time the use on goods and automobile product, therefore must improve polyacrylic odor properties just can widen polyacrylic range of application.
 
Summary of the invention
For overcoming the deficiencies in the prior art, the invention provides a kind of low VOC polypropylene composite material for automotive upholstery and preparation method thereof.The polypropylene composite material of preparation has the features such as low VOC, scrape resistant, resistance to marquis, mechanical property are strong, and the feature such as comprehensive cost excellence.
Technical scheme of the present invention is: a kind of low VOC polypropylene composite material, consists of by weight following raw materials according:
PP resin 49.6-93.1 part
High-density polyethylene resin (HDPE) 5.0-8.0 part
Toughner 0-15 part
Weighting agent 0-20 part
Oxidation inhibitor 0.2-1 part
Odour absorbents 1.0-5.0 part
Lubricant 0.5-1 part
Photostabilizer 0.2-0.4 part.
The preferred version of such scheme is that described PP resin is at least one in Co-polypropylene, homo-polypropylene.
Described toughner is at least one in ethylene-octene copolymer, terpolymer EP rubber/propylene-alpha olefin multipolymer, propylene-alpha olefin multipolymer, styrene-ethylene-propylene-styrene segmented copolymer.
At least one in described weighting agent talcum powder, calcium carbonate, barium sulfate, wollastonite, mica
At least one in described odour absorbents gac, porous silica, porous alumina, porous molecular screen
Described oxidation inhibitor is at least one in Hinered phenols, monothioester class, phosphorous acid ester type thermal stabilizing agent.Wherein Hinered phenols is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010), monothioester class is thio-2 acid 2 stearyl ester (oxidation inhibitor DSTP), phosphorous acid esters are tricresyl phosphite (2,4-di-tert-butyl-phenyl) ester (irgasfos 168).
Described lubricant is selected from polyethylene wax (PE wax), stearate comprises at least one in calcium stearate (CaSt), Zinic stearas (ZnSt), ethylene bis stearamide (EBS), grafting ethylene bis stearamide (TAF).
Described photostabilizer is hindered amine light stabilizer, mainly selects the CYASORB UV-3808 PP5 of Qing Te company or CYASORB UV-V680.
Another object of the present invention is to provide the preparation method of above-mentioned low VOC polypropylene composite material, comprises the following steps:
(1) by proportioning, take PP resin, toughner, odour absorbents, weighting agent, oxidation inhibitor, lubricant and photostabilizer, add together high mixer high speed to mix 2-10 minute;
(2) mixed material is dropped into melting in two vacuum parallel double-screw extruders, extruding pelletization; Wherein the barrel zone temperature of forcing machine is 180-230 ℃, and screw speed is 400-600r/min, and melt pressure is 1.5-2.5MPa, and vacuum tightness is-0.04～0.1MPa;
(3) pellet in (2) is put into baking oven, bake out temperature is 85 ± 5 ℃, and the time is 3 ± 0.2h, obtains low VOC modified polypropylene composite material.
Low VOC polypropylene composite material of the present invention has following beneficial effect with respect to prior art:
1, the present invention adopts gac, porous silica, porous alumina or porous molecular screen physics odour absorbents to prepare polypropylene composite material, make polypropylene composite material there is low distribution performance, can widen polyacrylic Application Areas, especially the use on automotive field.
2, preparation method of the present invention is simple, cost is low, high efficiency.
3, the present invention adopts HDPE, makes polypropylene composite material have good rigidity-toughness balanced performance, and the moulding process of polypropylene composite material and outward appearance are had to better improvement.
4, the present invention adopts two vacuum parallel double-screw extruders to carry out extruding pelletization, and pellet is put into baking oven again dry, make the VOC content of the polypropylene composite material that makes low, meet the technical requirements of in-car air quality evaluation guide, be applicable to use on automotive upholstery, improved its use range, and reduced automobile production cost, meet its light-weighted requirement.
 
Embodiment
Embodiment 1:
Low VOC polypropylene composite material in this example consists of by weight following raw materials according:
78.1 parts of Co-polypropylene
15 parts of homo-polypropylene
5 parts of high-density polyethylene resins (HDPE)
0.3 part of antioxidant 1076
0.2 part of irgasfos 168
1.0 parts of gacs
0.5 part of ethylene bis stearamide
0.3 part of CYASORB UV-3808 PP5
Concrete preparation method comprises the following steps:
(1) add together high mixer high speed to mix 5 minutes the above-mentioned raw material that measures;
(2) mixed material is dropped into melting in two vacuum parallel double-screw extruders, extruding pelletization, make modified polypropylene composite material; Wherein the barrel zone temperature of forcing machine is 220 ℃, and screw speed is 450r/min, and melt pressure is 2.0MPa, and vacuum tightness is 0.05MPa.
(3) the good particle of extruding pelletization being passed through to vacuum drying oven, is to dry 3h under 85 ℃ of conditions in temperature.
 
Comparative example 1: raw material is with embodiment 1, and difference is only not carry out drying and processing by vacuum drying oven after forcing machine is extruded.
 
Embodiment 2:
Low VOC polypropylene composite material in this example consists of by weight following raw materials according:
49.6 parts of Co-polypropylene
8.0 parts of high-density polyethylene resins (HDPE)
15 parts of ethylene-octene copolymers
15 parts of talcum powder
0.2 part of irgasfos 168
2.0 parts of porous silicas
0.8 part of calcium stearate
0.2 part of CYASORB UV-3808 PP5
Concrete preparation method comprises the following steps:
(1) above-mentioned each raw material measuring is added together high mixer high speed mix 8 minutes;
(2) mixed material is dropped into melting in two vacuum parallel double-screw extruders, extruding pelletization, make modified polypropylene composite material; Wherein the barrel zone temperature of forcing machine is 180 ℃, and screw speed is 400r/min, and melt pressure is 1.5MPa, and vacuum tightness is 0.01MPa
(3) the good particle of extruding pelletization being passed through to vacuum drying oven, is 80 ℃ in temperature, and the time is to dry under 2.8h condition.
 
Embodiment 3:
Low VOC polypropylene composite material in this example consists of by weight following raw materials according:
40 parts of Co-polypropylene
20 parts of Co-polypropylene
7 parts of high-density polyethylene resins (HDPE)
0 part of terpolymer EP rubber/propylene-alpha olefin copolymer 1
10 parts of wollastonites
10 parts, mica
0.3 part of antioxidant 1076
0.2 part of irgasfos 168
3.0 parts of porous molecular screens
0.5 part of polyethylene wax
0.4 part of CYASORB UV-V680
Concrete preparation method comprises the following steps:
(1) above-mentioned each raw material measuring is added together high mixer high speed mix 2 minutes;
(2) mixed material is dropped into melting in two vacuum parallel double-screw extruders, extruding pelletization, make modified polypropylene composite material; Wherein the barrel zone temperature of forcing machine is 230 ℃, and screw speed is 500r/min, and melt pressure is 2.0MPa, and vacuum tightness is-0.04MPa
(3) the good particle of extruding pelletization being passed through to vacuum drying oven, is 85 ℃ in temperature, and the time is to dry under 3h condition.
 
Embodiment 4:
Low VOC polypropylene composite material in this example consists of by weight following raw materials according:
25 parts of PP resins (Co-polypropylene)
30 parts of PP resins (Co-polypropylene)
7 parts of high-density polyethylene resins (HDPE)
10 parts of ethylene-octene copolymers
5 parts of propylene-alpha olefin multipolymers
20 parts, barium sulfate
0.5 part of oxidation inhibitor DSTP
0.5 part of irgasfos 168
3.0 parts of porous silicas
2.0 parts of porous aluminas
0.5 part of calcium stearate
0.5 part of Zinic stearas
0.4 part of CYASORB UV-V680
Concrete preparation method comprises the following steps:
(1) above-mentioned each raw material measuring is added together high mixer high speed mix 10 minutes;
(2) mixed material is dropped into melting in two vacuum parallel double-screw extruders, extruding pelletization, make modified polypropylene composite material; Wherein the barrel zone temperature of forcing machine is 200 ℃, and screw speed is 600r/min, and melt pressure is 2.5MPa, and vacuum tightness is 0.1MPa.
(3) the good particle of extruding pelletization being passed through to vacuum drying oven, is to dry 3.2h under 90 ℃ of conditions in temperature.
 
Comparative example 2: raw material is with embodiment 4, and difference is only also not carry out drying and processing by vacuum drying oven after mixture is extruded by single vacuum parallel double-screw extruder.
 
The polypropylene composite material of choosing the preparation of embodiment 1-4 and comparative example 1-2 report is respectively got a kind of, according to Air Quality Evaluation guide in GB_T_27630-2011_ passenger car, tests its VOC, specifically sees the following form:
Physicals (GB) Embodiment 1 Comparative example 1 Embodiment 2 Embodiment 3 Embodiment 4 Comparative example 2
Benzene mg/m3 ND ND ND ND ND ND
Toluene mg/m3 ND 1.4 0.9 ND ND ND
Ethylbenzene mg/m3 0.9 2.0 0.8 0.7 0.1 0.5
Dimethylbenzene mg/m3 0.8 1.8 0.5 0.3 0.1 23.5
Vinylbenzene mg/m3 0.1 0.5 ND ND ND 5
Formaldehyde mg/m3 ND 0.13 0.08 ND ND 2.5
Acetaldehyde mg/m3 ND ND 0.05 ND ND 3.0
Propenal mg/m3 ND ND ND ND ND ND
Note: in table, ND represents not detect this material.
Embodiment 1-4 from upper table and the contrast of the VOC test result of comparative example 1-2 are found out, the present invention adopts adsorbent to extrude processing at two vacuum extruding equipment, and the particle of extruding is carried out after drying and processing, can obviously reduce volatile content and odor properties in polypropylene composite material.
The preparation method of embodiment 1-4 and comparative example 1-2 is different, and to cause preparing in the polypropylene composite material of gained VOC detected result different, the present invention adopts two vacuum-extruders to carry out extruding pelletization, and then dry material by baking oven, its final polypropylene composite material can reach Air Quality Evaluation guide technical requirements in GB_T_27630-2011_ passenger car.And use single vacuum or do not dry material, process, the test of the VOC in polypropylene composite material is for defective.Shown in table specific as follows:
Figure 2013105047673100002DEST_PATH_IMAGE001
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not departing from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.

Claims (10)

1. for a low VOC polypropylene composite material for automotive upholstery, it is characterized in that: by following raw materials according, formed by weight:
PP resin 49.6-93.1 part
High-density polyethylene resin 5.0-8.0 part
Toughner 0-15 part
Weighting agent 0-25 part
Oxidation inhibitor 0.2-1 part
Odour absorbents 1.0-5.0 part
Lubricant 0.5-1 part
Photostabilizer 0.2-0.4 part.
2. low VOC polypropylene composite material according to claim 1, is characterized in that: described PP resin is at least one in Co-polypropylene, homo-polypropylene.
3. low VOC polypropylene composite material according to claim 1, is characterized in that: described toughner is at least one in ethylene-octene copolymer, terpolymer EP rubber/propylene-alpha olefin multipolymer, propylene-alpha olefin multipolymer, styrene-ethylene-propylene-styrene segmented copolymer.
4. low VOC polypropylene composite material according to claim 1, is characterized in that: described odour absorbents is at least one in gac, porous silica, porous alumina, porous molecular screen.
5. low VOC polypropylene composite material according to claim 1, is characterized in that: at least one in described weighting agent talcum powder, calcium carbonate, barium sulfate, wollastonite, mica.
6. low VOC polypropylene composite material according to claim 1, is characterized in that: described oxidation inhibitor is at least one in Hinered phenols, monothioester class, phosphorous acid ester type thermal stabilizing agent.
7. low VOC polypropylene composite material according to claim 6, is characterized in that: described Hinered phenols is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester; Monothioester class is that monothioester class is thio-2 acid 2 stearyl ester; Phosphorous acid esters are tricresyl phosphite (2,4-di-tert-butyl-phenyl) ester.
8. low VOC polypropylene composite material according to claim 1, is characterized in that: described lubricant is selected from least one in polyethylene wax, stearate, ethylene bis stearamide, grafting ethylene bis stearamide.
9. low VOC polypropylene composite material according to claim 1, is characterized in that: described photostabilizer is hindered amine light stabilizer.
10. a method of preparing low VOC polypropylene composite material as claimed in claim 1, is characterized in that: comprise the following steps:
(1) by proportioning, take PP resin, toughner, weighting agent, oxidation inhibitor, odour absorbents, lubricant and photostabilizer, add together high mixer high speed to mix 2-10 minute;
(2) mixed material is dropped into melting in two vacuum parallel double-screw extruders, extruding pelletization; Wherein the barrel zone temperature of forcing machine is 180-230 ℃, and screw speed is 400-600r/min, and melt pressure is 1.5-2.5MPa, and vacuum tightness is-0.04～0.1MPa;
(3) pellet in (2) is put into baking oven, bake out temperature is 85 ± 5 ℃, and the time is 3 ± 0.2h, obtains low VOC modified polypropylene composite material.
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CN104045908A (en) * 2014-06-10 2014-09-17 合肥会通新材料有限公司 Spraying-free scratch-resistant polypropylene composite material used for car exterior trimming parts and preparation method of composite material
CN104119615A (en) * 2014-07-23 2014-10-29 广东聚石化学股份有限公司 Low-TVOC (Total Volatile Organic Compound) and low-luster polypropylene composite for automotive interior trim and preparation method of low-TVOC and low-luster polypropylene composite
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CN104403204A (en) * 2014-12-17 2015-03-11 天津金发新材料有限公司 Low-VOC (volatile organic compound) polypropylene material as well as preparation method and application thereof
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CN106496796A (en) * 2016-11-17 2017-03-15 大河宝利材料科技(苏州)有限公司 PP composite material and preparation method thereof
CN107254111A (en) * 2017-05-27 2017-10-17 常州可赛成功塑胶材料有限公司 A kind of polyolefin low VOC lubricants and preparation method thereof for the hud typed inorganic particle of self assembly that adulterates
CN108047546A (en) * 2017-10-30 2018-05-18 江苏冠恒新材料科技有限公司 A kind of smell processing master batch and preparation method thereof
CN108070110A (en) * 2017-12-20 2018-05-25 会通新材料股份有限公司 A kind of low smell polystyrene material and preparation method thereof
CN108148280A (en) * 2016-12-05 2018-06-12 合肥杰事杰新材料股份有限公司 A kind of polypropene composition and preparation method thereof and its application on automobile bottom backplate
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CN112521691A (en) * 2020-09-02 2021-03-19 安庆会通新材料有限公司 Low-emission low-odor polypropylene composite material for automotive interior and preparation method thereof
US11078353B2 (en) 2017-05-29 2021-08-03 Dow Global Technologies Llc Thermoplastic polyolefin compositions useful for aldehyde abatement
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US11345802B2 (en) 2017-05-29 2022-05-31 Dow Global Technologies Llc Thermoplastic polyolefin compositions useful for aldehyde abatement
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CN117089141A (en) * 2023-09-13 2023-11-21 苏州润佳高分子材料有限公司 Low-odor light polypropylene composite material and preparation method thereof

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