CN114479282B - Low-gloss polypropylene composite material and preparation method thereof - Google Patents
Low-gloss polypropylene composite material and preparation method thereof Download PDFInfo
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- CN114479282B CN114479282B CN202011163212.3A CN202011163212A CN114479282B CN 114479282 B CN114479282 B CN 114479282B CN 202011163212 A CN202011163212 A CN 202011163212A CN 114479282 B CN114479282 B CN 114479282B
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 83
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 78
- -1 polypropylene Polymers 0.000 title claims abstract description 76
- 239000002131 composite material Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 24
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000002270 dispersing agent Substances 0.000 claims abstract description 14
- 239000012745 toughening agent Substances 0.000 claims abstract description 7
- 239000012764 mineral filler Substances 0.000 claims abstract description 5
- 239000000155 melt Substances 0.000 claims description 29
- 238000001125 extrusion Methods 0.000 claims description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 150000001412 amines Chemical class 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 229920001296 polysiloxane Polymers 0.000 claims description 9
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 8
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- 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 description 6
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 4
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 14
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- ORECYURYFJYPKY-UHFFFAOYSA-N n,n'-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexane-1,6-diamine;2,4,6-trichloro-1,3,5-triazine;2,4,4-trimethylpentan-2-amine Chemical compound CC(C)(C)CC(C)(C)N.ClC1=NC(Cl)=NC(Cl)=N1.C1C(C)(C)NC(C)(C)CC1NCCCCCCNC1CC(C)(C)NC(C)(C)C1 ORECYURYFJYPKY-UHFFFAOYSA-N 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 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
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- JLZIIHMTTRXXIN-UHFFFAOYSA-N 2-(2-hydroxy-4-methoxybenzoyl)benzoic acid Chemical compound OC1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1C(O)=O JLZIIHMTTRXXIN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
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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
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- 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
-
- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- 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)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a low-gloss polypropylene composite material which is prepared from the following components in parts by weight: 64.1-82.8 parts of polypropylene, 10-20 parts of mineral filler, 5-10 parts of toughening agent, 2-5 parts of melt-blown polypropylene, 0.1-0.6 part of antioxidant and 0.1-0.3 part of dispersing agent. The invention also discloses a preparation method of the low-gloss polypropylene composite material. According to the invention, melt-blown polypropylene is added into the composite material, and the glossiness of the modified polypropylene composite material is effectively reduced by utilizing the characteristics of extremely high fluidity and transparency of the melt-blown polypropylene; in addition, melt-blown polypropylene has a broad molecular weight distribution and also has a low gloss property per se. The low-gloss polypropylene prepared by the method disclosed by the invention is simple in preparation process, has small influence on mechanical properties, can obviously reduce the surface gloss of a product, and has profound automotive interior application value.
Description
Technical Field
The invention belongs to the field of modified materials, and particularly relates to a low-gloss polypropylene composite material and a preparation method thereof.
Background
The polypropylene material has wide application in interior and exterior products in the field of automobiles due to good comprehensive performance. With the continuous improvement of the living standard of people, more requirements are put forward on the appearance of products, and the production of products with a matte surface effect is an important subject of the existing automotive interior trim parts for reducing the gloss of the polypropylene surface. The low-gloss polypropylene material can reduce the plastic feel of the whole automobile, thereby effectively improving the sensory quality of the automobile interior trim. The conventional method for preparing low-glossiness polypropylene is to add low-mesh filler or elastomer or matting agent in a large proportion into the formula to increase the surface roughness, and no matter what way is, the method has great influence on the mechanical properties of the material, and the use risk exists at parts with high mechanical properties such as instrument desk with blasting requirements, door plates and the like.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the low-gloss polypropylene composite material, and melt-blown polypropylene is used as a low-gloss modification auxiliary agent to be added into a formula, so that the characteristics of extremely high fluidity and transparency of the low-gloss polypropylene composite material are utilized to effectively reduce the glossiness of the modified polypropylene composite material, and meanwhile, the mechanical property of the composite material is less affected.
The aim of the invention is realized by the following technical scheme:
the low-gloss polypropylene composite material is prepared from the following components in parts by weight:
as a preferable technical scheme, the melt index of the polypropylene under the condition of 230 ℃/2.16kg is 3-120g/10min; the polypropylene is at least one of homo-polypropylene and co-polypropylene.
As a preferable technical scheme, the mineral filler is at least one of talcum powder, calcium carbonate and barium sulfate.
As a preferable technical scheme, the toughening agent is POE, and the melt index of the toughening agent under the condition of 190 ℃/2.16kg is 0.1-100g/10min.
As a preferable technical scheme, the melt index of the melt-blown polypropylene under the condition of 230 ℃/2.16kg is 1000-2000g/10min.
As a preferable technical scheme, the antioxidant is at least one of hindered amine antioxidants, hindered phenol antioxidants and phosphite antioxidants.
As a preferable technical scheme, the dispersing agent is a silicone dispersing agent.
Another object of the present invention is to provide a method for preparing the low gloss polypropylene composite material, comprising the steps of:
(1) Weighing polypropylene, mineral filler, toughener, melt-blown polypropylene, antioxidant and dispersant according to the proportion, adding into a high-speed mixer, and uniformly premixing to obtain a mixture;
(2) And (3) placing the mixture into a double-screw extruder, and performing melt extrusion, granulation and drying to obtain the low-gloss polypropylene composite material. Further, the extrusion temperature of the double-screw extruder is 190-230 ℃, and the screw rotating speed is 250-400 rpm.
Compared with the prior art, the invention has the beneficial effects that:
the melt-blown polypropylene is used as a low-gloss modification auxiliary agent to be added into the material, and the glossiness of the modified polypropylene is effectively reduced by utilizing the characteristics of extremely high fluidity and transparency. In the injection molding process of the product, the high-melt-index melt-blown polypropylene flows on the surface of the product to form a surface melt-blown layer, and the joint surface of the surface melt-blown layer and the base polypropylene is an uneven curved surface. When incident light irradiates on the surface of the surface melt-blown layer, the incident light can undergo the processes of refraction, diffuse reflection and the like, so that the glossiness of the product is reduced. Melt-blown polypropylene has a broad molecular weight distribution and also has low gloss properties. The low-gloss polypropylene prepared by the method disclosed by the invention is simple in preparation process, has small influence on mechanical properties, can obviously reduce the surface gloss of a product, and has profound automotive interior application value.
Drawings
FIG. 1 is a schematic diagram of the structure of a low gloss polypropylene composite material made in accordance with the present invention;
reference numerals: 1-surface melt-blown layer, 2-surface melt-blown layer and the binding surface of base polypropylene, I-incident light, II-refracted light and III-diffuse reflected light.
Detailed Description
The invention will be further illustrated with reference to examples.
The product types and manufacturers used in the following examples are as follows:
the model of the PP product with the melt index of 50g/10min is EA5075, and the manufacturer is Liandebasell industrial company;
the model of the PP product with the melt index of 3g/10min is K8003, and the manufacturer is China petrochemical Shanghai petrochemical industry Co., ltd;
the product model of the polypropylene copolymer PP with the melt index of 10g/10min is YPJ1215C, and the manufacturer is China petrochemical, yangzi petrochemical Co., ltd;
the PP product model with the melt index of 70g/10min is 1885, and the manufacturer is medium petrifaction;
the model of the PP product of the homo-polypropylene with the melt index of 120g/10min is MN90B, and the manufacturer is medium petrifaction;
the model of a melt-blown polypropylene product with the melt index of 1500g/10min is PPNF1500, and the manufacturer is Hefeijian New Material Co., ltd;
the model of melt-blown polypropylene product with the melt index of 1800g/10min is PPNF1800, and the manufacturer is Hefeijie new material Co., ltd;
the model of the melt-blown polypropylene product with the melt index of 1200g/10min is PPMF650X, and the manufacturer is Bassel.
The above reagents are merely illustrative of the sources and ingredients of the reagents used in the experiments of the invention and are well disclosed and do not represent the inability to practice the invention using other reagents of the same type or provided by other suppliers.
Example 1
73.5 parts of weighed copolymerized polypropylene with the melt index of 50g/10min, 15 parts of talcum powder, 8200 parts of POE with the melt index of 5g/10min, 1500 parts of melt-blown polypropylene PPNF, 0.1 part of hindered amine antioxidant Chimassorb944, 0.2 part of hindered phenol antioxidant KY-1330 and 0.2 part of silicone dispersant E525 are premixed in a high mixer to obtain uniformly mixed raw materials; placing the mixed raw materials into a double-screw extruder, wherein the process temperatures from a material port to a die of the double-screw extruder are respectively as follows: and (3) carrying out melt extrusion, granulating and drying under the conditions of 180 ℃ in the first region, 190 ℃ in the second region, 190 ℃ in the third region, 200 ℃ in the fourth region, 200 ℃ in the fifth region and 200 ℃ in the sixth region at the screw rotating speed of 300 revolutions per minute to obtain the low-gloss polypropylene composite material.
Example 2
78.6 parts of weighed homo-polypropylene with the melt index of 70g/10min, 12 parts of calcium carbonate, 8842 parts of POE with the melt index of 3g/10min, 1800 parts of melt-blown polypropylene PPNF, 33460.1 parts of hindered amine antioxidant Cyasorb, 1010.05 parts of hindered phenol antioxidant, 168.05 parts of phosphite antioxidant and 0.2 part of silicone dispersant E525 are premixed in a high mixer to obtain uniformly mixed raw materials; placing the mixed raw materials into a double-screw extruder, wherein the process temperatures from a material port to a die of the double-screw extruder are respectively as follows: and (3) carrying out melt extrusion, granulating and drying under the conditions of 190 ℃ in the first region, 200 ℃ in the second region, 200 ℃ in the third region, 200 ℃ in the fourth region, 200 ℃ in the fifth region and 300 revolutions per minute of screw at 210 ℃ in the sixth region to obtain the low-gloss polypropylene composite material.
Example 3
70.5 parts of weighed copolymerized polypropylene with the melt index of 3g/10min, 18 parts of barium sulfate, 8200 parts of POE with the melt index of 50g/10min, 650X 4 parts of melt-blown polypropylene PPMF, 6220.4 parts of hindered amine antioxidant Tinuvin and 0.1 part of silicone dispersing agent E525 are premixed in a high mixer to obtain uniformly mixed raw materials; placing the mixed raw materials into a double-screw extruder, wherein the process temperatures from a material port to a die of the double-screw extruder are respectively as follows: and (3) carrying out melt extrusion, granulating and drying under the conditions of 180 ℃ in the first region, 190 ℃ in the second region, 200 ℃ in the third region, 200 ℃ in the fourth region, 210 ℃ in the fifth region and 300 revolutions per minute of screw at the six-region 210 ℃ to obtain the low-gloss polypropylene composite material.
Example 4
42.6 parts of weighed copolymerized polypropylene with the melt index of 10g/10min, 40 parts of homo-polymerized polypropylene with the melt index of 80g/10min, 5 parts of talcum powder, 5 parts of calcium carbonate and 5 parts of POE8150 with the melt index of 0.1g/10min are premixed in a high mixer to obtain uniformly mixed raw materials, wherein the raw materials comprise 15002 parts of melt-blown polypropylene PPNF, 0.05 part of hindered amine antioxidant Tinuvin, 10100.05 parts of hindered phenol antioxidant and 0.3 part of silicone dispersant E525; placing the mixed raw materials into a double-screw extruder, wherein the process temperatures from a material port to a die of the double-screw extruder are respectively as follows: and (3) carrying out melt extrusion, granulating and drying under the conditions of 200 ℃ in the first region, 210 ℃ in the second region, 220 ℃ in the third region, 220 ℃ in the fourth region, 220 ℃ in the fifth region and 230 ℃ in the sixth region at the screw speed of 300 revolutions per minute to obtain the low-gloss polypropylene composite material.
Example 5
Mixing 64.1 parts of weighed homo-polypropylene with the melt index of 120g/10min, 20 parts of talcum powder and 8200 10 parts of POE with the melt index of 100g/10min in a high-speed mixer to obtain uniformly mixed raw materials, wherein the raw materials comprise 1500 parts of melt-blown polypropylene PPNF, 0.2 part of hindered amine antioxidant Chimassorb944, 0.4 part of hindered phenol antioxidant 1010 and 0.3 part of silicone dispersing agent E525; placing the mixed raw materials into a double-screw extruder, wherein the process temperatures from a material port to a die of the double-screw extruder are respectively as follows: and (3) carrying out melt extrusion, granulating and drying under the conditions of 190 ℃ in the first region, 190 ℃ in the second region, 190 ℃ in the third region, 200 ℃ in the fourth region, 200 ℃ in the fifth region and 300 revolutions per minute of screw at 200 ℃ in the sixth region to obtain the low-gloss polypropylene composite material.
Comparative example 1:
76.5 parts of copolymerized polypropylene with the melt index of 50g/10min, 15 parts of talcum powder, 8 parts of POE with the melt index of 5g/10min, 0.1 part of hindered amine antioxidant Chimassorb944, 0.2 part of hindered phenol antioxidant 1010 and 0.2 part of silicone dispersing agent E525 are weighed and premixed in a high-speed mixer to obtain uniformly mixed raw materials; placing the mixed raw materials into a double-screw extruder, wherein the process temperatures from a material port to a die of the double-screw extruder are respectively as follows: and (3) carrying out melt extrusion, granulating and drying under the conditions of 180 ℃ in the first region, 190 ℃ in the second region, 190 ℃ in the third region, 200 ℃ in the fourth region, 200 ℃ in the fifth region and 300 revolutions per minute of screw at 200 ℃ in the sixth region, so as to obtain the low-gloss polypropylene composite material.
Comparative example 2:
mixing 81.6 parts of weighed homo-polypropylene with the melt index of 70g/10min, 12 parts of calcium carbonate, 8200 parts of POE with the melt index of 3g/10min, 0.1 part of hindered amine antioxidant Chimassorb944, 13300.05 parts of hindered phenol antioxidant, 168.05 parts of phosphite antioxidant and 0.2 part of silicone dispersant E525 in a high-speed mixer to obtain a uniformly mixed raw material; placing the mixed raw materials into a double-screw extruder, wherein the process temperatures from a material port to a die of the double-screw extruder are respectively as follows: and (3) carrying out melt extrusion, granulating and drying under the conditions of 180 ℃ in the first region, 190 ℃ in the second region, 200 ℃ in the third region, 200 ℃ in the fourth region, 210 ℃ in the fifth region and 300 revolutions per minute of screw at the six-region 210 ℃ to obtain the low-gloss polypropylene composite material.
FIG. 1 is a schematic structural diagram of a low-gloss polypropylene composite material prepared by the invention, wherein melt-blown polypropylene has extremely high fluidity and transparency, and flows on the surface of a product in the injection molding process of the product to form a surface melt-blown layer 1, and the joint surface 2 of the surface melt-blown layer and base polypropylene is an uneven curved surface. When incident light I irradiates on the surface of the surface melt-blown layer 1, refraction light II can be formed by refraction due to high transparency of the surface melt-blown layer 1, and when the refraction light II reaches the bonding surface of the surface melt-blown layer 1 and base polypropylene, obvious diffuse reflection light III can be generated due to unevenness of the bonding surface, so that the glossiness of a finished product is reduced.
Examples 1-5, comparative examples 1-2 produced products having specular gloss as measured by ASTM D2457 60 ℃and data as shown in Table 1 below:
table 1 gloss test results
The materials prepared in the above examples and comparative examples were subjected to related mechanical property tests, and the test results are shown in table 2:
table 2 results of mechanical property test of materials prepared in examples and comparative examples
As can be seen from the table, the glossiness of the low-gloss polypropylene composite material prepared by the method can be reduced to more than 50% compared with that of the traditional modified polypropylene, and the low-gloss polypropylene composite material still maintains good mechanical properties, can be widely used for automotive upholstery, and has profound application value.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (8)
1. A low gloss polypropylene composite, characterized by: the composition is prepared from the following components in parts by weight:
the melt index of the melt-blown polypropylene under the condition of 230 ℃/2.16kg is 1000-2000g/10min.
2. The low gloss polypropylene composite of claim 1, wherein: the melt index of the polypropylene under the condition of 230 ℃/2.16kg is 3-120g/10min; the polypropylene is at least one of homo-polypropylene and co-polypropylene.
3. The low gloss polypropylene composite of claim 1, wherein: the mineral filler is at least one of talcum powder, calcium carbonate and barium sulfate.
4. The low gloss polypropylene composite of claim 1, wherein: the toughening agent is POE, and the melt index of the toughening agent under the condition of 190 ℃/2.16kg is 0.1-100g/10min.
5. The low gloss polypropylene composite of claim 1, wherein: the antioxidant is at least one of hindered amine antioxidants, hindered phenol antioxidants and phosphite antioxidants.
6. The low gloss polypropylene composite of claim 1, wherein: the dispersing agent is a silicone dispersing agent.
7. A process for the preparation of a low gloss polypropylene composite material according to any one of claims 1 to 6, wherein: the method comprises the following steps:
(1) Weighing polypropylene, mineral filler, toughener, melt-blown polypropylene, antioxidant and dispersant according to the proportion, adding into a high-speed mixer, and uniformly premixing to obtain a mixture;
(2) And (3) placing the mixture into a double-screw extruder, and performing melt extrusion, granulation and drying to obtain the low-gloss polypropylene composite material.
8. The method of manufacturing according to claim 7, wherein: in the step (2), the extrusion temperature of the double-screw extruder is 190-230 ℃, and the screw rotating speed is 250-400 rpm.
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|---|---|---|---|---|
| CN110760130A (en) * | 2018-07-27 | 2020-02-07 | 合肥杰事杰新材料股份有限公司 | Low-odor polypropylene material and preparation method thereof |
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| CN114479282A (en) | 2022-05-13 |
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