CN114196119A - Anti-tiger stripe polypropylene composite material and preparation method thereof - Google Patents
Anti-tiger stripe polypropylene composite material and preparation method thereof Download PDFInfo
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- CN114196119A CN114196119A CN202111577416.6A CN202111577416A CN114196119A CN 114196119 A CN114196119 A CN 114196119A CN 202111577416 A CN202111577416 A CN 202111577416A CN 114196119 A CN114196119 A CN 114196119A
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- parts
- polypropylene
- composite material
- tiger
- polyolefin elastomer
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 34
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 33
- -1 polypropylene Polymers 0.000 title claims abstract description 31
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 229920006124 polyolefin elastomer Polymers 0.000 claims abstract description 26
- 241000282376 Panthera tigris Species 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000012745 toughening agent Substances 0.000 claims abstract description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 9
- 239000011707 mineral Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 11
- 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 8
- 239000010445 mica Substances 0.000 claims description 5
- 229910052618 mica group Inorganic materials 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 229920001400 block copolymer Polymers 0.000 claims description 4
- 229920005604 random copolymer Polymers 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 3
- WXCZUWHSJWOTRV-UHFFFAOYSA-N but-1-ene;ethene Chemical compound C=C.CCC=C WXCZUWHSJWOTRV-UHFFFAOYSA-N 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 2
- 239000010456 wollastonite Substances 0.000 claims description 2
- 229910052882 wollastonite Inorganic materials 0.000 claims description 2
- 241000736019 Sansevieria Species 0.000 claims 1
- 229920001971 elastomer Polymers 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 6
- 239000000806 elastomer Substances 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 33
- 238000011056 performance test Methods 0.000 description 8
- 238000005303 weighing Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 235000019387 fatty acid methyl ester Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920002397 thermoplastic olefin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 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
- C08L23/14—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
Abstract
The invention discloses a tiger-skin-pattern-resistant polypropylene composite material and a preparation method thereof, wherein the composite material is mainly prepared from the following raw materials in parts by weight: polypropylene: 60-70 parts of a toughening agent: 5-10 parts of mineral powder: 15-25 parts of a polyolefin elastomer: 1-10 parts. Compared with the prior art, the high-fluidity polyolefin elastomer is adopted, so that the viscosity of the elastomer in the molding process is reduced, the grain size of the dispersed phase of the elastomer is favorably refined, and the tiger skin lines in the molding process are eliminated. Meanwhile, the mechanical property can be kept well, and the requirements of products are met.
Description
Technical Field
The invention discloses a tiger-skin-pattern-resistant polypropylene composite material and a preparation method thereof, and belongs to the technical field of polypropylene composite materials.
Background
The modified polypropylene material for the vehicle is mainly used for manufacturing materials such as instrument boards, door panels, upright posts, bumpers and the like at present, but the appearance problems of tiger skin lines, flow marks and the like are easily generated in the injection molding process of the parts, the appearance of a finished piece is influenced, and how to improve the tiger skin lines is a problem which is urgently needed to be solved by various large modified plastic manufacturers.
The tiger stripe problem is essentially caused by the different phase morphologies formed by the rubber phase in the formulated system during filling. Generally, the dispersed rubber phase is approximately spherical, but when the melt flows in a fountain shape in a mold, part of rubber particles are stretched to generate orientation, and the oriented structure of the rubber phase is not recovered in time in the subsequent cooling process, so that the oriented and unoriented rubber phase structure exists in the system, and bright and dark stripes, namely tiger stripes, are generated on the surface of the whole part.
The patent CN105219005A solves the tiger stripe problem of the material by adding a tiger stripe remover, but the tiger stripe remover is a blend of thermoplastic polyolefin and epoxy fatty acid methyl ester, and the epoxy fatty acid methyl ester aggravates the VOC and odor problems of the material and is difficult to be suitable for automobile interior parts. Patent CN103434102A improves tiger skin lines by changing injection molding process and mold structure, and although the effect is obtained, customers often do not easily change the mold to improve tiger skin lines in consideration of cost in the actual production process.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the problems of the prior art, the invention provides a tiger stripe-resistant polypropylene composite material and a preparation method thereof.
The technical scheme is as follows: in order to achieve the purpose, the technical scheme of the invention is as follows:
the anti-tiger stripe polypropylene composite material is mainly prepared from the following raw materials in parts by weight:
polypropylene: 60-70 parts of a toughening agent: 5-10 parts of mineral powder: 15-25 parts of a polyolefin elastomer: 1-10 parts.
Preferably, the composite material is mainly prepared from the following raw materials in parts by weight:
polypropylene: 60-70 parts of a toughening agent: 8-10 parts of mineral powder: 18-22 parts of polyolefin elastomer: 2-6 parts.
Preferably, the polypropylene is homo-polypropylene or co-polypropylene.
Preferably, the toughening agent is one or a composition of more than two of ethylene-octene random or block copolymer and ethylene-butene random or block copolymer
Preferably, the mineral powder is one or more of talcum powder, calcium carbonate, mica and wollastonite.
Preferably, the polyolefin elastomer is a high-fluidity polyolefin elastomer, and the melt index is 500-2000 g/10min (190 ℃, 2.16 Kg).
Preferably, the polyolefin elastomer is selected from one or a combination of two of Affinity GA1950 or Vistamaxx 8880.
The preparation method of the tiger-stripe-resistant polypropylene composite material comprises the following steps:
and (3) taking the polypropylene, the toughening agent, the mineral powder and the polyolefin elastomer, stirring at a high speed, and extruding and granulating the mixed raw materials to obtain the polypropylene/polyolefin elastomer composite material.
Preferably, a high-speed stirrer is adopted for stirring, the stirring time is 4-6min, and the stirring speed is 1000-1500 rpm.
Preferably, a double-screw extruder is adopted for extrusion granulation, and the extrusion temperature is 190-220 ℃.
Has the advantages that: compared with the prior art, the high-fluidity polyolefin elastomer is adopted, so that the viscosity of the elastomer in the molding process is reduced, the grain size of the dispersed phase of the elastomer is favorably refined, and the tiger skin lines in the molding process are eliminated. Meanwhile, the mechanical property can be kept well, and the requirements of products are met.
Detailed Description
In order to further understand the features and technical means of the present invention, and to achieve the specific objects and functions, and analyze the advantages and spirit of the present invention, the following embodiments further illustrate the present invention.
The raw materials used in the first, inventive and comparative examples were as follows:
polypropylene resin: taiwan plastic 3204, impact-resistant copolymerized PP
A toughening agent: dow vinyl elastomer 8137
Mineral filler: liaoning Xin Da 3000 mesh talcum powder, Haiying powder mica powder PM3
Polyolefin elastomer: affinity GA1950, confluent finger 500g/10min (190 ℃, 2.16Kg), Vistamaxx8880, confluent finger 1000g/10min (190 ℃, 2.16 Kg).
Example 1
3204: 68 parts, 8137: 10 parts, talc powder: 20 parts, polyolefin elastomer GA 1950: 2 portions of
After the materials are weighed according to the proportion, the materials are stirred for 5min by a high-speed stirrer at the stirring speed of 1200rpm, the mixed materials are added into a double-screw extruder to be extruded and granulated, the extrusion temperature is 200 ℃, and then the materials are injection-molded into standard sample strips and sample plates to carry out a series of performance tests.
Example 2
Weighing 3204: 66 parts, 8137: 10 parts, talc powder: 20 parts, polyolefin elastomer GA 1950: 4 parts.
After the materials are weighed according to the proportion, the materials are stirred for 5min by a high-speed stirrer at the stirring speed of 1200rpm, the mixed materials are added into a double-screw extruder to be extruded and granulated at the extrusion temperature of 200 ℃, and then the materials are injection-molded into standard sample strips and sample plates to carry out a series of performance tests.
Example 3
Weighing 3204: 64 parts, 8137: 10 parts, talc powder: 20 parts, polyolefin elastomer GA 1950: 6 parts.
After the materials are weighed according to the proportion, the materials are stirred for 5min by a high-speed stirrer at the stirring speed of 1200rpm, the mixed materials are added into a double-screw extruder to be extruded and granulated at the extrusion temperature of 200 ℃, and then the materials are injection-molded into standard sample strips and sample plates to carry out a series of performance tests.
Example 4
Weighing 3204: 66 parts, 8137: 10 parts, talc powder: 20 parts, polyolefin elastomer 8880: 4 parts.
After the materials are weighed according to the proportion, the materials are stirred for 5min by a high-speed stirrer at the stirring speed of 1200rpm, the mixed materials are added into a double-screw extruder to be extruded and granulated at the extrusion temperature of 200 ℃, and then the materials are injection-molded into standard sample strips and sample plates to carry out a series of performance tests.
Example 5
Weighing 3204: 64 parts, 8137: 10 parts of mica powder: 20 parts, polyolefin elastomer 8880: 6 parts.
After the materials are weighed according to the proportion, the materials are stirred for 5min by a high-speed stirrer at the stirring speed of 1200rpm, the mixed materials are added into a double-screw extruder to be extruded and granulated at the extrusion temperature of 200 ℃, and then the materials are injection-molded into standard sample strips and sample plates to carry out a series of performance tests.
Comparative example 1
Weighing 3204: 70 parts, 8137: 10 parts, talc powder: and 20 parts.
After the materials are weighed according to the proportion, the materials are stirred for 5min by a high-speed stirrer at the stirring speed of 1200rpm, the mixed materials are added into a double-screw extruder to be extruded and granulated, the extrusion temperature is 200 ℃, and then the materials are injection-molded into standard sample strips and sample plates to carry out a series of performance tests.
Comparative example 2
Weighing 3204: 70 parts, 8137: 10 parts of mica powder: and 20 parts.
After the materials are weighed according to the proportion, the materials are stirred for 5min by a high-speed stirrer at the stirring speed of 1200rpm, the mixed materials are added into a double-screw extruder to be extruded and granulated, the extrusion temperature is 200 ℃, and then the materials are injection-molded into standard sample strips and sample plates to carry out a series of performance tests.
Second, performance test
The sample bars prepared in examples 1-5 and comparative examples 1-2 were tested for tensile strength, elongation at break, flexural strength, flexural modulus and impact strength as follows:
wherein the tensile strength and the elongation at break are tested by adopting ISO 527-2;
the bending strength and the bending modulus are tested by adopting ISO 178-2003;
the impact strength is tested by adopting ISO 180-2000;
the tiger stripe resistance was tested by injection molding the material into a black long piece of 600mm x 100mm x 2mm in size and then visually inspecting.
The results are shown in the following table:
it can be seen from the above data that the addition of the high-fluidity polyolefin elastomer is adopted to reduce the viscosity of the POE8137 in the molding process, which is beneficial to the refinement of the particle size of the POE dispersed phase, and further reduces the occurrence probability of tiger stripes, and meanwhile, the higher the addition amount of the high-fluidity polyolefin elastomer is, the more obvious the tiger stripe reduction effect is (although the polyolefin elastomers in examples 2 and 4 are the same in addition amount, but different in type, the different in tiger stripe resistance effect).
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The tiger-stripe-resistant polypropylene composite material is characterized by being mainly prepared from the following raw materials in parts by weight:
polypropylene: 60-70 parts of a toughening agent: 5-10 parts of mineral powder: 15-25 parts of a polyolefin elastomer: 1-10 parts.
2. The anti-tiger stripe polypropylene composite material as claimed in claim 1, wherein the composite material is mainly prepared from the following raw materials in parts by weight:
polypropylene: 60-70 parts of a toughening agent: 8-10 parts of mineral powder: 18-22 parts of polyolefin elastomer: 2-6 parts.
3. The tiger stripe resistant polypropylene composite of claim 1, wherein the polypropylene is a homo-polypropylene or a co-polypropylene.
4. The tiger stripe resistant polypropylene composite of claim 1, wherein the toughening agent is one or a combination of two or more of ethylene-octene random or block copolymer, ethylene-butene random or block copolymer.
5. The anti-tiger stripe polypropylene composite material as claimed in claim 1, wherein the mineral powder is one or more of talcum powder, calcium carbonate, mica and wollastonite.
6. The anti-tiger stripe polypropylene composite material as claimed in claim 1, wherein the polyolefin elastomer is a high-fluidity polyolefin elastomer, and the melt index is 500-2000 g/10min (190 ℃, 2.16 Kg).
7. The sansevieria-resistant polypropylene composite according to claim 1, wherein the polyolefin elastomer is selected from one or a combination of two of Affinity GA1950 or Vistamaxx 8880.
8. The preparation method of the tiger stripe resistant polypropylene composite material as claimed in any one of claims 1 to 7, which is characterized by comprising the following steps:
and (3) taking the polypropylene, the toughening agent, the mineral powder and the polyolefin elastomer, stirring at a high speed, and extruding and granulating the mixed raw materials to obtain the polypropylene/polyolefin elastomer composite material.
9. The method for preparing polypropylene composite material with anti-tiger stripes as claimed in claim 8, wherein the stirring is performed by a high-speed stirrer at a stirring speed of 1000-1500rpm for 4-6 min.
10. The method for preparing the anti-tiger stripe polypropylene composite material as claimed in claim 8, wherein the extrusion granulation is performed by a twin-screw extruder at the extrusion temperature of 190 ℃ and 220 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111577416.6A CN114196119A (en) | 2021-12-22 | 2021-12-22 | Anti-tiger stripe polypropylene composite material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111577416.6A CN114196119A (en) | 2021-12-22 | 2021-12-22 | Anti-tiger stripe polypropylene composite material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN114196119A true CN114196119A (en) | 2022-03-18 |
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| CN202111577416.6A Pending CN114196119A (en) | 2021-12-22 | 2021-12-22 | Anti-tiger stripe polypropylene composite material and preparation method thereof |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108690264A (en) * | 2017-04-12 | 2018-10-23 | 合肥杰事杰新材料股份有限公司 | A kind of polypropylene material and preparation method thereof of low gloss, anti-tiger fur line injection defect |
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- 2021-12-22 CN CN202111577416.6A patent/CN114196119A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108690264A (en) * | 2017-04-12 | 2018-10-23 | 合肥杰事杰新材料股份有限公司 | A kind of polypropylene material and preparation method thereof of low gloss, anti-tiger fur line injection defect |
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Application publication date: 20220318 |