CN117757179B - A kind of polypropylene material and its preparation method and application - Google Patents
A kind of polypropylene material and its preparation method and application Download PDFInfo
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- CN117757179B CN117757179B CN202311651838.2A CN202311651838A CN117757179B CN 117757179 B CN117757179 B CN 117757179B CN 202311651838 A CN202311651838 A CN 202311651838A CN 117757179 B CN117757179 B CN 117757179B
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 94
- -1 polypropylene Polymers 0.000 title claims abstract description 93
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 91
- 239000000463 material Substances 0.000 title claims abstract description 81
- 238000002360 preparation method Methods 0.000 title abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000000843 powder Substances 0.000 claims abstract description 45
- 239000002245 particle Substances 0.000 claims abstract description 39
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 20
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 20
- 239000004611 light stabiliser Substances 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 4
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 4
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical compound [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 claims description 4
- NLSFWPFWEPGCJJ-UHFFFAOYSA-N 2-methylprop-2-enoyloxysilicon Chemical compound CC(=C)C(=O)O[Si] NLSFWPFWEPGCJJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims 1
- 230000003179 granulation Effects 0.000 claims 1
- 150000002989 phenols Chemical class 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000006748 scratching Methods 0.000 abstract description 4
- 230000002393 scratching effect Effects 0.000 abstract description 4
- 239000002861 polymer material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 15
- 239000011159 matrix material Substances 0.000 description 12
- 238000012360 testing method Methods 0.000 description 5
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 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 4
- 239000006185 dispersion Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 3
- 241000203475 Neopanax arboreus Species 0.000 description 3
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical group CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical group OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 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
- 238000000746 purification Methods 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
本发明属于高分子材料技术领域，公开了一种聚丙烯材料及其制备方法和应用。本发明的聚丙烯材料按重量份数计包括以下组分：聚丙烯69～90份，氧化铝粉混合物5～15份，硅烷偶联剂0.2～1份，主抗氧剂0～1份，辅抗氧剂0～1份，光稳定剂0～1份。本发明采用大小粒径组合的氧化铝粉混合物填充聚丙烯，提升了材料在划伤过程中抵抗变形的能力，使得划痕较浅，避免材料容易被硬物刮花，对光泽度影响低。适用于汽车零部件、家电外壳领域。
The present invention belongs to the technical field of polymer materials, and discloses a polypropylene material, a preparation method and an application thereof. The polypropylene material of the present invention comprises the following components by weight: 69-90 parts of polypropylene, 5-15 parts of alumina powder mixture, 0.2-1 parts of silane coupling agent, 0-1 parts of primary antioxidant, 0-1 parts of secondary antioxidant, and 0-1 parts of light stabilizer. The present invention uses a mixture of alumina powder with large and small particle sizes to fill polypropylene, which improves the material's ability to resist deformation during scratching, makes scratches shallow, avoids the material from being easily scratched by hard objects, and has little effect on gloss. It is suitable for the fields of automotive parts and home appliance housings.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to the field of modification of polypropylene materials, and specifically relates to a polypropylene material with both high gloss and scratch resistance, and a preparation method and application thereof.
Background
Polypropylene, PP for short, is a polymer of propylene obtained by polyaddition. Because polypropylene has the advantages of lower density, better strength, rigidity and heat resistance, low cost and the like, the polypropylene is widely applied to the fields of automobile industry, household electronic appliances, packaging, building materials and the like. In parts such as automobile parts and home appliance housings, a product is often required to have a high-gloss appearance effect, and thus a high-gloss polypropylene material is required. The Chinese patent document CN 101100539A adopts homopolymerized polypropylene as a matrix, is filled with nano calcium carbonate, and is modified by a nucleating agent cross-linking agent to obtain the high-gloss polypropylene material. The Chinese patent document CN 104086939A adopts the copolymerized polypropylene as a matrix, and uses mineral filling and ethylene-octene toughening to obtain the highlight polypropylene, but the polypropylene material of the scheme has lower glossiness. The polypropylene itself has low hardness and the surface is easy to scratch, so that the high-gloss polypropylene material is easy to be damaged by hard objects in the use process to cause poor appearance. Therefore, there is a need to develop a polypropylene material that can achieve both high gloss and scratch resistance.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a polypropylene material which can achieve both high gloss and scratch resistance, and a preparation method and application thereof.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the polypropylene material comprises, by weight, 69-90 parts of polypropylene, 5-15 parts of an alumina powder mixture, 0.2-1 part of a silane coupling agent, 0-1 part of a primary antioxidant, 0-1 part of an auxiliary antioxidant and 0-1 part of a light stabilizer;
The alumina powder mixture comprises alumina powder A with the average particle size of 200-500 nm and alumina powder B with the average particle size of 2.6-4.3 mu m, wherein the mass ratio of the alumina powder A to the alumina powder B is 6-8:2-4;
in the polypropylene material, the content of the polypropylene resin is not less than 70%.
According to the polypropylene material disclosed by the invention, the polypropylene is filled with the alumina powder mixture with the combination of the large particle size and the small particle size, the large particle size promotes the dispersion of the small particle size, and the small particle size is dispersed around the large particle size to bridge, so that the large particle size alumina is prevented from being ploughed out by a needle, the polypropylene material has high glossiness and good scratch performance, the dispersibility of the alumina can be obviously improved, the surface gloss of the material can be improved, and the scratch performance is improved. The hardness of the aluminum oxide (namely aluminum oxide) is higher, so that the deformation resistance of the material in the scratching process is improved, the scratch is shallower, and the material is prevented from being scratched by hard objects easily. The alumina powder with large particle size avoids alumina agglomeration, promotes dispersion, ensures that the surface of the alumina powder with small particle size is uniformly distributed, fully plays the effect of improving the surface hardness of the material, and has small particle size and low influence on glossiness.
Preferably, the alumina may be selected to be spherical alumina.
Preferably, the mass ratio of the alumina powder A to the alumina powder B is 2-3:1, and further, the mass ratio of the alumina powder A to the alumina powder B is 2-2.5:1.
Preferably, in the polypropylene material, the parts by weight of the alumina powder mixture may be selected to be a part range value of any of 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, or both.
As a preferred embodiment of the polypropylene material according to the present invention, the polypropylene is homo-polypropylene and/or random co-polypropylene. The melt flow rate of the polypropylene is 1g/10 min-100 g/10min (tested according to ISO 1133-1:2022, temperature 230 ℃ load 2.16 KG).
In the polypropylene material, the content of polypropylene is not less than 70%.
Preferably, the parts by weight of the polypropylene may be any part or range of values of 69 parts, 70 parts, 71 parts, 72 parts, 73 parts, 74 parts, 75 parts, 76 parts, 77 parts, 78 parts, 79 parts, 80 parts, 81 parts, 82 parts, 83 parts, 84 parts, 85 parts, 86 parts, 87 parts, 88 parts, 89 parts, 90 parts.
As a preferred embodiment of the polypropylene material according to the present invention, the silane coupling agent is at least one of vinyl silane, amino silane and methacryloxy silane, and preferably, the silane coupling agent is amino silane such as gamma-aminopropyl triethoxy silane.
According to the polypropylene material disclosed by the invention, the silane coupling agent is used as the dispersing agent, so that the interaction between the alumina and the matrix is improved by the coupling agent, the alumina powder is well dispersed in the matrix, the glossiness is improved, the effect of the filler and the matrix is enhanced, the deformation resistance of the matrix is improved, and the scratch damage degree is reduced.
As a preferable embodiment of the polypropylene material, the main antioxidant is a hindered phenol compound, and preferably the main antioxidant is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate (antioxidant 1010).
As a preferable embodiment of the polypropylene material, the auxiliary antioxidant is phosphite ester compound, and preferably, the auxiliary antioxidant is tris (2, 4-di-tert-butylphenyl) phosphite ester (antioxidant 168).
As a preferred embodiment of the polypropylene material according to the invention, the light stabilizer is a hindered amine compound, preferably the light stabilizer is C12-21 and C18-unsaturated fatty acid-2, 6-tetramethyl-4-piperidyl ester (light stabilizer UV-3808PP 5).
In a second aspect, the invention provides a method for preparing the polypropylene material, which comprises the following steps:
the components are taken according to the weight parts, evenly mixed, melted, extruded and granulated to obtain the product;
As a preferred implementation mode of the preparation method, the conditions of melt extrusion are that the temperature of a first area is 80-120 ℃, the temperature of a second area is 180-200 ℃, the temperature of a third area is 180-220 ℃, the temperature of a fourth area is 180-220 ℃, the temperature of a fifth area is 180-220 ℃, the temperature of a sixth area is 180-220 ℃, the temperature of a seventh area is 180-220 ℃, the temperature of an eighth area is 180-220 ℃, the temperature of a ninth area is 180-220 ℃, the rotating speed of a host machine is 400 r/min-500 r/min, and the length-diameter ratio of the twin-screw extruder is 35-45:1.
In a third aspect, the polypropylene material is applied to automobile parts and household appliance shells.
Compared with the prior art, the invention has the beneficial effects that:
According to the polypropylene material, polypropylene is filled with the alumina powder mixture with the mixed particle sizes, the hardness of the alumina is high, the deformation resistance of the material in the scratching process is improved, scratches are shallow, and the material is prevented from being scratched by hard objects easily. The alumina powder with large particle size avoids alumina agglomeration, promotes dispersion, ensures that the surface of the alumina powder with small particle size is uniformly distributed, fully plays the effect of improving the surface hardness of the material, and has small particle size and low influence on glossiness. The silane coupling agent is used as the dispersing agent, so that the interaction between the alumina and the matrix is improved, the alumina powder is well dispersed in the matrix, the glossiness is improved, the effect of the filler and the matrix is enhanced, the deformation resistance of the matrix is improved, and the scratch damage degree is reduced. Is suitable for the fields of automobile parts and household appliance shells.
Drawings
FIG. 1 is a two-dimensional optical measurement of the polypropylene material of example 1 after scratch;
FIG. 2 is a post-scratch two-dimensional optical measurement of the polypropylene material of example 2;
FIG. 3 is a post-scratch two-dimensional optical measurement of the polypropylene material of comparative example 1;
In fig. 1 to 3, the magnification is 65 times.
Detailed Description
For a better description of the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to the following specific examples. It will be appreciated by persons skilled in the art that the specific embodiments described herein are for purposes of illustration only and are not intended to be limiting.
In the following examples and comparative examples, the primary antioxidant, the secondary antioxidant and the light stabilizer are all commercially available, and the same primary antioxidant, secondary antioxidant and light stabilizer are used in parallel experiments unless otherwise specified.
In the following embodiments, the performance detection method is:
The scratch resistance is tested according to five-finger scratch FORD FLTM BN-13, the load is 10N, the damage degree of the sample is evaluated according to the width of the sample scratch, the smaller the width is, the lower the damage degree of the material is, and the scratch resistance is better;
gloss the surface of the injection molded plaque was tested using a gloss meter to test 60 ° gloss.
The raw materials used in the following examples and comparative examples are described below, but are not limited to these materials:
homo-polypropylene, brand N-Z30S, purchased from the Mao-name petrochemical industry;
random copolymer polypropylene, brand PP RP346R, purchased from middle sea shell;
Alumina powder 0.2 μm, alumina, average particle size 200nm, available from Hebei cast-ground alloy materials Co., ltd;
alumina powder 0.5 μm, alumina, average particle size 500nm, available from Hebei cast-ground alloy materials Co., ltd;
alumina powder 1 μm, alumina, average particle size 1000nm, purchased from Hebei cast-ground alloy materials Co., ltd;
alumina powder 2.6 μm, alumina, average particle size 2600nm, purchased from brilliant chemical industry;
alumina powder 4.3 μm, alumina, average particle size 4300nm, purchased from blue environmental protection water purification materials factory;
alumina powder 6.5 μm, alumina, average particle size 6500nm, purchased from brilliant chemical industry;
the alumina powder is spherical. The average particle diameter of the alumina powder is measured by referring to GB/T19077-2016. The micron-sized alumina powder is subjected to sieving classification and particle size detection before use, so as to achieve the corresponding particle size.
Precipitated barium sulfate, average particle size 1.5 μm, brand AB-3000N1, available from Huangpu days of Taihua light Co., guangzhou;
talcum powder of 3000 mesh, brand TYT-777A, purchased from Haifeng Tianyuan chemical responsibility Limited;
Vinyl silane, vinyl tris (2-methoxyethoxy) silane, trade designation SG-SI 172, available from the company of the Nanjing dawn chemical industry group, inc;
aminosilane, gamma-aminopropyl triethoxysilane, brand JH-a110, available from Jiang Han fine chemicals inc. In Jingzhou;
Amide lubricant, EBS B50, available from Guangzhou Runfan chemical Co., ltd
Primary antioxidant, antioxidant 1010, commercially available;
Auxiliary antioxidant, antioxidant 168, commercially available;
The light stabilizer is used in the preparation of a light stabilizer, UV-3808PP5, the effective content of the light stabilizer is 50%, the carrier resin is PP, and the light stabilizer added in the table 1 is converted into pure light stabilizer, and the pure light stabilizer is commercially available.
The composition of the polypropylene materials of examples 1 to 8 and comparative examples 1 to 9 is shown in Table 1.
The preparation methods of the polypropylene materials of examples 1 to 8 and comparative examples 1 to 9 are as follows:
Taking homo-polypropylene or random co-polypropylene, alumina powder, vinyl silane or gamma-aminopropyl triethoxy silane, an antioxidant, an auxiliary antioxidant and a light stabilizer according to parts by weight, putting the mixture into a high-speed mixer, fully stirring the mixture to obtain a premix, putting the premix into a main feeding port of a double-screw extruder for melt extrusion, granulating and drying to obtain the polypropylene.
The conditions of the melt extrusion of the double-screw extruder are that the temperature of a first area is 90 ℃, the temperature of a second area is 180 ℃, the temperature of a third area is 200 ℃, the temperature of a fourth area is 200 ℃, the temperature of a fifth area is 200 ℃, the temperature of a sixth area is 200 ℃, the temperature of a seventh area is 200 ℃, the temperature of an eighth area is 200 ℃, the temperature of a ninth area is 200 ℃, the rotating speed of a host machine is 450r/min, and the length-diameter ratio of the double-screw extruder is 40:1.
TABLE 1 Polypropylene material components (parts by weight) and test results thereof
TABLE 2 comparative polypropylene Material Components (parts by weight) and test results thereof
The polypropylene material provided by the embodiment of the invention has high gloss and scratch resistance, the glossiness of the material is 85-89 (preferably 87-89), and the scratch width is 0.351 mm-0.356 mm (preferably 0.351 mm-0.351 mm).
The polypropylene materials of examples 1 and 2 were high in gloss and excellent in scratch resistance. As shown in fig. 1 and 2, after five-finger scratch test, the scratch is shallow and has small width, and the surface is not scratched, namely, a slight shallow scratch trace exists. The scratch resistance of the material is excellent.
The polypropylene material of comparative example 1 uses precipitated barium sulfate, and is easily scratched and deformed due to low surface hardness of the material, although the polypropylene material has high glossiness, as compared with example 1. As shown in fig. 3, after five-finger scratch test, the scratch was relatively wide and the surface scratch was apparent (the surface could see many undulations). The polypropylene material of comparative example 2 is filled with talc powder, and the surface roughness is affected on the surface of polypropylene due to the low glossiness of the talc powder, so that the glossiness of the polypropylene material is low, and the hardness of the talc powder is low, so that the scratch resistance of the polypropylene material is poor.
Compared with example 2, the polypropylene material of comparative example 3 adopts an amide lubricant, and cannot effectively disperse alumina powder, so that powder aggregation is caused, the glossiness is lower, and the scratch performance is poor due to easy scratch.
In the polypropylene material of comparative example 4, the content of the alumina powder of 0.2 microns is high, the alumina powder is not easy to disperse, the surface is easy to agglomerate to cause some pits to influence the glossiness, the agglomerated alumina powder is easy to scratch off during scratching to cause serious surface damage of the material, and the scratch performance of the polypropylene material is poor.
Compared with the polypropylene material of the example 5, the polypropylene material of the comparative example 5 has higher content of the alumina powder of 4.3 microns, the interface between the large-grain-size aluminum powder and the polypropylene matrix is obvious and is easy to be destroyed, and the needle is easy to scrape the matrix and the aluminum powder during scraping, so that the scratch of the polypropylene material is obvious. Meanwhile, the interface obviously causes light scattering, and reduces the surface glossiness. In the polypropylene material of comparative example 6, the weight part of the total alumina powder remained unchanged, but the proportion of the large particle size was too much, so that the gloss and scratch property of the polypropylene material were poor.
In the polypropylene material of comparative example 7, the weight part of the total alumina powder remained unchanged as compared with example 2, but the ratio of small particle size was too much so that the scratch property of the polypropylene material was poor.
In the polypropylene material of comparative example 8, the nano alumina was blended with the micro alumina having a too small particle size, so that the scratch property of the polypropylene material was poor, and in the polypropylene material of comparative example 9, the nano alumina was blended with the micro alumina having a too large particle size, so that the glossiness of the polypropylene material was low, and the scratch property was poor.
The polypropylene material disclosed by the invention adopts reasonable matching of the aluminum powder with the large and small particle sizes, the large particle size promotes the dispersion of the small particle size, and the small particle size is bridged around the large particle size, so that the large particle size aluminum oxide is prevented from being ploughed out by a needle, and the polypropylene material is high in glossiness and good in scratch performance.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted equally without departing from the spirit and scope of the technical solution of the present invention.
Claims (8)
1. The polypropylene material is characterized by comprising, by weight, 69-90 parts of polypropylene, 5-15 parts of an alumina powder mixture, 0.2-1 part of a silane coupling agent, 0-1 part of a primary antioxidant, 0-1 part of an auxiliary antioxidant and 0-1 part of a light stabilizer;
The alumina powder mixture comprises alumina powder A with the average particle size of 200-500 nm and alumina powder B with the average particle size of 2.6-4.3 mu m, wherein the mass ratio of the alumina powder A to the alumina powder B is 6-8:2-4.
2. The polypropylene material according to claim 1, wherein the polypropylene is homo-polypropylene and/or random co-polypropylene.
3. The polypropylene material according to claim 1, wherein the silane coupling agent is at least one of vinyl silane, amino silane, methacryloxy silane.
4. The polypropylene material according to claim 1, wherein the primary antioxidant is a hindered phenolic compound.
5. The polypropylene material according to claim 1, wherein the secondary antioxidant is a phosphite compound.
6. The polypropylene material according to claim 1, wherein the light stabilizer is a hindered amine compound.
7. The method for preparing the polypropylene material according to any one of claims 1 to 6, comprising the steps of:
And (3) taking the components according to the parts by weight, uniformly mixing, and carrying out melt extrusion granulation.
8. The polypropylene material as defined in any one of claims 1 to 6, which is used in automobile parts and home appliance housings.
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| CN117757179A CN117757179A (en) | 2024-03-26 |
| CN117757179B true CN117757179B (en) | 2025-03-18 |
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| CN202311651838.2A Active CN117757179B (en) | 2023-12-05 | 2023-12-05 | A kind of polypropylene material and its preparation method and application |
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| CN105038504A (en) * | 2015-07-28 | 2015-11-11 | 南京航空航天大学 | Abrasion-resistant anti-permeability epoxy protective coating and preparation method thereof |
| CN116874929A (en) * | 2022-12-29 | 2023-10-13 | 重庆普利特新材料有限公司 | An aluminum nitride/acicular alumina filled cool-touch polypropylene composite material and its preparation method |
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| KR101947230B1 (en) * | 2016-05-18 | 2019-05-10 | 현대자동차주식회사 | Non-paint metallic Polypropylene composite |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105038504A (en) * | 2015-07-28 | 2015-11-11 | 南京航空航天大学 | Abrasion-resistant anti-permeability epoxy protective coating and preparation method thereof |
| CN116874929A (en) * | 2022-12-29 | 2023-10-13 | 重庆普利特新材料有限公司 | An aluminum nitride/acicular alumina filled cool-touch polypropylene composite material and its preparation method |
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