CN114561068A - Black reinforced polypropylene composition and preparation method and application thereof - Google Patents
Black reinforced polypropylene composition and preparation method and application thereof Download PDFInfo
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- CN114561068A CN114561068A CN202210212110.9A CN202210212110A CN114561068A CN 114561068 A CN114561068 A CN 114561068A CN 202210212110 A CN202210212110 A CN 202210212110A CN 114561068 A CN114561068 A CN 114561068A
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- polypropylene composition
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- wollastonite
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 78
- -1 polypropylene Polymers 0.000 title claims abstract description 78
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 78
- 239000000203 mixture Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000010456 wollastonite Substances 0.000 claims abstract description 29
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 29
- 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 claims abstract description 25
- 239000002667 nucleating agent Substances 0.000 claims abstract description 16
- 239000003086 colorant Substances 0.000 claims abstract description 14
- 239000011256 inorganic filler Substances 0.000 claims abstract description 14
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 14
- 239000012745 toughening agent Substances 0.000 claims abstract description 14
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 27
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000600 sorbitol Substances 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 4
- 239000000454 talc Substances 0.000 claims description 4
- 235000012222 talc Nutrition 0.000 claims description 4
- 229910052623 talc Inorganic materials 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 229920002943 EPDM rubber Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000013329 compounding Methods 0.000 abstract description 3
- 238000004040 coloring Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 13
- 238000012360 testing method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000011049 filling Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- FEPBITJSIHRMRT-UHFFFAOYSA-N 4-hydroxybenzenesulfonic acid Chemical compound OC1=CC=C(S(O)(=O)=O)C=C1 FEPBITJSIHRMRT-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- ZTLPQIUVXKZGGI-UHFFFAOYSA-K aluminum;1,3,7,9-tetratert-butyl-11-oxido-5h-benzo[d][1,3,2]benzodioxaphosphocine 11-oxide Chemical compound [Al+3].C1C2=CC(C(C)(C)C)=CC(C(C)(C)C)=C2OP([O-])(=O)OC2=C1C=C(C(C)(C)C)C=C2C(C)(C)C.C1C2=CC(C(C)(C)C)=CC(C(C)(C)C)=C2OP([O-])(=O)OC2=C1C=C(C(C)(C)C)C=C2C(C)(C)C.C1C2=CC(C(C)(C)C)=CC(C(C)(C)C)=C2OP([O-])(=O)OC2=C1C=C(C(C)(C)C)C=C2C(C)(C)C ZTLPQIUVXKZGGI-UHFFFAOYSA-K 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 229910021392 nanocarbon Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
- 235000010234 sodium benzoate Nutrition 0.000 description 1
- 239000004299 sodium benzoate Substances 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- NESLWCLHZZISNB-UHFFFAOYSA-M sodium phenolate Chemical compound [Na+].[O-]C1=CC=CC=C1 NESLWCLHZZISNB-UHFFFAOYSA-M 0.000 description 1
- ZHROMWXOTYBIMF-UHFFFAOYSA-M sodium;1,3,7,9-tetratert-butyl-11-oxido-5h-benzo[d][1,3,2]benzodioxaphosphocine 11-oxide Chemical group [Na+].C1C2=CC(C(C)(C)C)=CC(C(C)(C)C)=C2OP([O-])(=O)OC2=C1C=C(C(C)(C)C)C=C2C(C)(C)C ZHROMWXOTYBIMF-UHFFFAOYSA-M 0.000 description 1
- BYMHXIQVEAYSJD-UHFFFAOYSA-M sodium;4-sulfophenolate Chemical compound [Na+].OC1=CC=C(S([O-])(=O)=O)C=C1 BYMHXIQVEAYSJD-UHFFFAOYSA-M 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000003981 vehicle Substances 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
-
- 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
- C08K2201/005—Additives being defined by their particle size in general
-
- 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
Abstract
The invention discloses a black reinforced polypropylene composition and a preparation method and application thereof. The black reinforced polypropylene composition comprises the following components in parts by weight: 60-85 parts of polypropylene, 5-20 parts of toughening agent, 0.1-0.3 part of nucleating agent, 0.1-0.5 part of antioxidant, 15-25 parts of inorganic filler and 0.5-3 parts of black coloring agent; the inorganic filler comprises wollastonite and talcum powder, and the mass ratio of the wollastonite to the talcum powder is (1-3) to (4-1). The invention can prepare the product with high blackness and good strength by compounding wollastonite and talcum powder in a certain proportion and cooperating with black coloring agentBlack, chemically reinforced polypropylene compositions. The black polypropylene composition has an L value of less than or equal to 25.2, a flexural modulus of more than or equal to 1250MPa, and a simple beam notch impact strength of more than or equal to 91.8kJ/m2。
Description
Technical Field
The invention relates to the technical field of high polymer materials, and particularly relates to a black reinforced polypropylene composition and a preparation method and application thereof.
Background
The filling modified polypropylene (PP) material is widely applied to products such as automobile interior and exterior decorations, household appliances and the like due to the advantages of good comprehensive performance, easy processing and forming, high cost performance and the like. At present, the filling modification material used in the vehicle interior and exterior trim filling modified PP material uses talcum powder mostly, because the talcum powder is of a sheet structure, the material has higher rigidity and dimensional stability, and the reinforcing effect on the mechanical property of the polypropylene material is good.
However, when the talcum powder filled modified polypropylene material is used for preparing black related products, the problem that the color is not matched with black is often encountered, and even if a large amount of black coloring agent is added, the L value of the product is still high, and the requirement of high blackness cannot be met. The prior art discloses a high-blackness polypropylene composition and a preparation method thereof, and the blackness of a polypropylene material is improved by adopting crosslinked polymethyl methacrylate microspheres to carry out high-temperature activation treatment on nano carbon black. On one hand, the method is complex in preparation process and high in cost, and on the other hand, the blackness of the material cannot be improved after reaching a certain degree along with the increase of the addition amount of the high-temperature activated carbon black, so that the requirement of high blackness in actual use is still not met.
Therefore, it is required to develop a reinforced polypropylene composition having high blackness.
Disclosure of Invention
The invention provides a black reinforced polypropylene composition for overcoming the defect of insufficient blackness in the prior art.
Another object of the present invention is to provide a process for preparing the black-colored reinforced polypropylene composition.
Another object of the present invention is to provide the use of the black-colored reinforced polypropylene composition described above.
In order to solve the technical problems, the invention adopts the technical scheme that:
a black reinforced polypropylene composition comprises the following components in parts by weight:
60-85 Parts of Polypropylene (PP),
5-20 parts of a toughening agent,
0.1 to 0.3 part of nucleating agent,
0.1 to 0.5 part of antioxidant,
15-25 parts of an inorganic filler,
1-3 parts of a black coloring agent;
the inorganic filler comprises wollastonite and talcum powder, and the mass ratio of the wollastonite to the talcum powder is (1-3) to (4-1).
The talcum powder has a sheet structure and certain orientation. The inventor researches and discovers that the talcum powder is arranged in a polypropylene system in a parallel orientation mode and is vertical to the incident direction of light, so that layer-by-layer separation is formed in the material, the incident light is extremely difficult to penetrate, and the talcum powder distributed on the surface layer of the material has a scattering effect on the light; meanwhile, in the crystallization process of polypropylene, the talcum powder can induce the ordered arrangement of crystals, so that the light absorption efficiency of the black colorant between the surface layer and the lamellar layer is reduced. Therefore, although the talcum powder is filled in a polypropylene system, the mechanical property of the material can be effectively improved, the material cannot achieve the effect of high blackness by independently adding the talcum powder as an inorganic filler.
Wollastonite has a unique needle-like structure, and is arranged in a polypropylene matrix to form a skeleton structure, so that light transmission and effective absorption of light by a black coloring agent are facilitated, and the color of the material is deepened. The inventor researches and discovers that the addition of wollastonite enables the polypropylene composition to have a higher black effect, namely an extremely low L value.
However, wollastonite has high self-hardness as a chain metasilicate, and the addition of a large amount of wollastonite to a polypropylene system tends to decrease the toughness of the material. The inventor researches and discovers that the black reinforced polypropylene composition with high blackness and good mechanical property can be prepared by compounding wollastonite and talcum powder in a certain proportion and cooperating with a black coloring agent.
Preferably, the length-diameter ratio of the wollastonite is (7-15): 1.
more preferably, the length-diameter ratio of the wollastonite is (8-12): 1.
when the length-diameter ratio of the wollastonite is within the range, the blackness effect and the mechanical property of the black reinforced polypropylene composition are comprehensively better.
Preferably, the average particle size of the talcum powder is 4-8 μm.
More preferably, the average particle size of the talc powder is 5 to 6 μm.
Preferably, the mass ratio of the wollastonite to the talcum powder in the inorganic filler is (1-3) to (3-1).
More preferably, the mass ratio of the wollastonite to the talcum powder in the inorganic filler is (0.5-2): 1.
within the mass ratio range, the synergistic effect of the wollastonite and the talcum powder is more obvious, and the black effect of the black reinforced polypropylene composition is better.
The black colorant may be a black pigment commonly used in polypropylene materials.
Optionally, the black colorant is black masterbatch and/or carbon black.
Preferably, the toughening agent is one or more of ethylene-octene copolymer, ethylene-butene copolymer or ethylene propylene diene monomer.
The content of the toughening agent is increased, which is beneficial to improving the toughness of the material. However, because the refractive indexes of the toughening agent and the polypropylene matrix resin are different, the increase of the content of the toughening agent can influence the absorption of incident light by the black colorant in the polypropylene composition, so that the L value of the material is increased, and the blackness is reduced. The content of the toughening agent is preferably 13-17 parts.
Preferably, the nucleating agent is a metal salt nucleating agent, an organic phosphate ester nucleating agent or a sorbitol nucleating agent.
Optionally, the metal salt nucleating agent is one or more of sodium benzoate, sodium stearate, calcium stearate, sodium p-phenolsulfonate, calcium p-phenolsulfonate or sodium phenolate.
Optionally, the sorbitol nucleating agent is one or more of dibenzylidene alcohol (DBS), p-methylbenzylidene sorbitol (MDBS), bis (p-chlorobenzylidene) sorbitol (CDBS), or bis (p-ethylbenzylidene sorbitol) (EDBS).
Optionally, the organic phosphate nucleating agent is sodium 2,2 '-methylenebis (4, 6-di-tert-butylphenyl) phosphate and/or aluminum 2,2' -methylenebis (4, 6-di-tert-butylphenyl) phosphate.
Preferably, the antioxidant is one or more of a bisphenol antioxidant, a semi-hindered phenol antioxidant or a phosphite antioxidant.
Preferably, the melt flow rate of the polypropylene at 230 ℃ and 2.16kg is 10-60 g/10 min.
More preferably, the melt flow rate of the polypropylene is 17-22 g/10min at 230 ℃ and 2.16 kg.
The melt flow rate of the polypropylene is according to ISO 1133-1-2011 test standard.
The invention also provides a preparation method of the black reinforced polypropylene composition, which is characterized by comprising the following steps:
mixing polypropylene, a toughening agent, a nucleating agent, an antioxidant, an inorganic filler and a black coloring agent, adding the mixture into an extruder, and carrying out melt mixing, extrusion and granulation to obtain the black reinforced polypropylene composition.
Preferably, the extruder is a twin screw extruder.
Preferably, the length-diameter ratio of a screw of the double-screw extruder is (25-75): 1, the extrusion temperature is 180-230 ℃, the screw rotating speed is 75-250 r/min, and the feeding rotating speed is 30-150 r/min.
The invention also protects the application of the black reinforced polypropylene composition in automobile interior and exterior materials.
Alternatively, the interior and exterior trim of the automobile may be a dashboard, a center console, a pillar, a door panel, a front bumper, a rear bumper, a spoiler, or a weather strip.
Compared with the prior art, the invention has the beneficial effects that:
the invention develops a black-added polypropylene composition, which can be prepared into a black-enhanced polypropylene composition with high blackness and good mechanical property by compounding wollastonite and talcum powder in a certain proportion and cooperating with a black coloring agent. The black polypropylene composition has an L value of less than or equal to 25.2, a flexural modulus of more than or equal to 1250MPa, and a simple beam notch impact strength of more than or equal to 91.8kJ/m2。
Detailed Description
The present invention will be further described with reference to the following embodiments.
The starting materials in the examples and comparative examples are commercially available as follows:
the antioxidants used in the parallel examples and comparative examples of the invention are the same.
Reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.
Examples 1 to 19
Examples 1 to 19 respectively provide a black reinforced polypropylene composition, the component contents of which are shown in table 1, and the preparation method is as follows:
mixing the components according to the table 1, adding the mixture into a double-screw extruder, and performing melt mixing and extrusion granulation to obtain a black reinforced polypropylene composition; the length-diameter ratio of a screw of the double-screw extruder is 48:1, the extrusion temperature is 180-230 ℃, the rotating speed of the screw is 200r/min, and the feeding rotating speed is 120 r/min.
TABLE 1 example 1 ~ 19 composition content (parts by weight) of black reinforced polypropylene composition
Comparative examples 1 to 5
Comparative examples 1 to 5 each provide a black reinforced polypropylene composition, the component contents of which are shown in table 2, and the preparation method is the same as that of example 2.
TABLE 2 comparative examples 1 to 5 component contents (parts by weight) of black reinforced polypropylene composition
Performance testing
The black reinforced polypropylene compositions prepared in the above examples and comparative examples were tested for their performance by the following specific methods:
blackness value (L value): measuring the L value according to CIE 1976L a b color space by using an X-rite 7000A desktop colorimeter, wherein the lower the L value, the higher the blackness;
impact strength of the simply supported beam notch: measured according to ISO179-1-2010 standard, test conditions: the temperature is 23 ℃;
flexural modulus: the test was carried out according to ISO179-1993, test conditions: the temperature was 23 ℃ and the bending rate was 2 mm/min.
The test results of the examples and comparative examples are shown in tables 3 and 4, respectively.
TABLE 3 test results of examples 1 to 18
According to the test results of Table 3, black-colored enhanced polypropylenes prepared by the examples of the present inventionThe L value of the alkene composition is less than or equal to 25.2, the flexural modulus is more than or equal to 1250MPa, and the impact strength of a simply supported beam notch is more than or equal to 91.8kJ/m2Namely, the black color is excellent, and the mechanical property is good.
In practical use, the flexural modulus of the reinforced polypropylene material is generally required to be more than or equal to 1200MPa, and the impact strength of a simple beam notch is required to be more than or equal to 90kJ/m2. In examples 1 to 6, when the impact strength and the flexural modulus of the simply supported beam notch are close and both satisfy the mechanical property requirements, the L values of examples 3, 4, and 5 are relatively lower, that is, the blackness of the material is higher and the black effect is better, and then examples 2 and 6 are followed, and then example 1 is repeated. Therefore, the mass ratio of the wollastonite to the talc in the inorganic filler is preferably (1 to 3): (3 to 1), more preferably (0.5 to 2): 1.
according to examples 2, 7 and 8, it can be seen that as the content of the toughening agent is increased, the toughness of the material is improved, but the increase of the content of the toughening agent also affects the absorption of incident light by the black colorant in the polypropylene composition, resulting in the increase of the L value and the decrease of the blackness of the material. The polypropylene composition of example 1 is relatively superior in terms of both jetness and toughness.
According to the examples 2, 11, 12 and 13, 14, the talc powder with different average particle sizes and the wollastonite with different length-diameter ratios can cause a certain difference in the black effect and mechanical properties of the black reinforced polypropylene composition. The average particle size of the talcum powder is 5-6 mu m, and the length-diameter ratio of wollastonite is (8-12): 1, the black-colored reinforced polypropylene composition has a lower L value and is excellent in both rigidity and toughness.
According to the embodiment 2 and the embodiments 15 to 17, when the melt flow rate of the polypropylene is 17 to 22g/10min at 230 ℃ and 2.16kg, the black color is increased, so that the components in the polypropylene composition are uniformly dispersed, the compatibility is better, and the comprehensive performance of the material is better.
TABLE 4 test results for comparative examples 1 to 5
According to the test results of table 4,comparative example 1, which does not contain wollastonite, produced a black reinforced polypropylene composition having a poor black effect and an excessively high L value. In comparative example 2, the amount of wollastonite was too large, and the improvement in blackness was not significant for the polypropylene material. In comparative example 3, where the amount of wollastonite was too large, the black-colored reinforced polypropylene composition was obtained in which the L value was low, but the deterioration of the toughness was severe and the impact strength at the notch of the beam was only 86.5kJ/m2The flexural modulus is also lower.
In comparative example 4, the content of the inorganic filler was too much, and the total content was too much, although the mass ratio of wollastonite to talc was still between (1 to 3) and (4 to 1), which resulted in that the L value of the black reinforced polypropylene composition was still high and the toughness was poor.
In comparative example 5, no toughening agent was included, and the prepared black reinforced polypropylene composition had too high flexural modulus, too low impact strength at the notch of the simply supported beam, and the material was hard and brittle, limiting its application in automotive interior and exterior materials.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The black reinforced polypropylene composition is characterized by comprising the following components in parts by weight:
60-85 Parts of Polypropylene (PP),
5-20 parts of a toughening agent,
0.1 to 0.3 part of nucleating agent,
0.1 to 0.5 part of antioxidant,
15-25 parts of an inorganic filler,
1-3 parts of a black coloring agent;
the inorganic filler comprises wollastonite and talcum powder, and the mass ratio of the wollastonite to the talcum powder is (1-3) to (4-1).
2. The black reinforced polypropylene composition as claimed in claim 1, wherein the wollastonite has an aspect ratio of (7-15): 1.
3. the black reinforced polypropylene composition of claim 1, wherein the wollastonite has an aspect ratio of (8-12): 1.
4. the black-colored reinforced polypropylene composition according to claim 1, wherein the talc has an average particle size of 4 to 8 μm.
5. The black reinforced polypropylene composition according to claim 1, wherein the inorganic filler comprises wollastonite and talc in a mass ratio of (0.5 to 2): 1.
6. the black-colored reinforced polypropylene composition according to claim 1, wherein the melt flow rate of the polypropylene at 230 ℃ under 2.16kg is 10 to 60g/10 min.
7. The black-colored reinforced polypropylene composition according to claim 1, wherein the nucleating agent is a metal salt type nucleating agent, an organic phosphate ester type nucleating agent, or a sorbitol type nucleating agent.
8. The black reinforced polypropylene composition according to claim 1, wherein the toughening agent is one or more of ethylene octene copolymer, ethylene butene copolymer or ethylene propylene diene monomer.
9. A process for preparing a black-colored reinforced polypropylene composition according to any one of claims 1 to 8, comprising the steps of:
mixing polypropylene, a toughening agent, a nucleating agent, an antioxidant, an inorganic filler and a black coloring agent, adding the mixture into an extruder, and carrying out melt mixing, extrusion and granulation to obtain the black reinforced polypropylene composition.
10. Use of the black-colored reinforced polypropylene composition according to any one of claims 1 to 8 for automotive interior and exterior materials.
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| CN202210212110.9A CN114561068B (en) | 2022-03-04 | 2022-03-04 | Black reinforced polypropylene composition and preparation method and application thereof |
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| CN114561068B CN114561068B (en) | 2023-10-31 |
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| WO2020119472A1 (en) * | 2018-12-13 | 2020-06-18 | 金发科技股份有限公司 | Polypropylene composite material and preparation method therefor |
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