CN114409998A - Honeycomb coffee carbon composite sound-insulation noise-reduction polypropylene material and preparation method thereof - Google Patents
Honeycomb coffee carbon composite sound-insulation noise-reduction polypropylene material and preparation method thereof Download PDFInfo
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- CN114409998A CN114409998A CN202111597506.1A CN202111597506A CN114409998A CN 114409998 A CN114409998 A CN 114409998A CN 202111597506 A CN202111597506 A CN 202111597506A CN 114409998 A CN114409998 A CN 114409998A
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- -1 polypropylene Polymers 0.000 title claims abstract description 74
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 67
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 67
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 239000000463 material Substances 0.000 title claims abstract description 43
- 238000009413 insulation Methods 0.000 title claims abstract description 41
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 35
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 24
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 24
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims abstract 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 abstract description 7
- 238000005469 granulation Methods 0.000 claims abstract description 7
- 230000003179 granulation Effects 0.000 claims abstract description 7
- 239000004611 light stabiliser Substances 0.000 claims abstract description 6
- 239000012745 toughening agent Substances 0.000 claims abstract description 5
- 230000001413 cellular effect Effects 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 13
- 229920001577 copolymer Polymers 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 239000007822 coupling agent Substances 0.000 claims description 7
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000002656 Distearyl thiodipropionate Substances 0.000 claims description 3
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound 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 claims description 3
- PWWSSIYVTQUJQQ-UHFFFAOYSA-N distearyl thiodipropionate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCCCCCCC PWWSSIYVTQUJQQ-UHFFFAOYSA-N 0.000 claims description 3
- 235000019305 distearyl thiodipropionate Nutrition 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- KJYSXRBJOSZLEL-UHFFFAOYSA-N (2,4-ditert-butylphenyl) 3,5-ditert-butyl-4-hydroxybenzoate Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OC(=O)C1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 KJYSXRBJOSZLEL-UHFFFAOYSA-N 0.000 claims description 2
- 229960000969 phenyl salicylate Drugs 0.000 claims description 2
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 2
- ZQBAKBUEJOMQEX-UHFFFAOYSA-N salicylic acid phenyl ester Natural products OC1=CC=CC=C1C(=O)OC1=CC=CC=C1 ZQBAKBUEJOMQEX-UHFFFAOYSA-N 0.000 claims description 2
- 229920001897 terpolymer Polymers 0.000 claims description 2
- 239000003610 charcoal Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000003973 paint Substances 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 11
- 238000003837 high-temperature calcination Methods 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000005034 decoration Methods 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 3
- 238000004381 surface treatment Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 229910017059 organic montmorillonite Inorganic materials 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- VNFXPOAMRORRJJ-UHFFFAOYSA-N (4-octylphenyl) 2-hydroxybenzoate Chemical compound C1=CC(CCCCCCCC)=CC=C1OC(=O)C1=CC=CC=C1O VNFXPOAMRORRJJ-UHFFFAOYSA-N 0.000 description 1
- PZRWFKGUFWPFID-UHFFFAOYSA-N 3,9-dioctadecoxy-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane Chemical compound C1OP(OCCCCCCCCCCCCCCCCCC)OCC21COP(OCCCCCCCCCCCCCCCCCC)OC2 PZRWFKGUFWPFID-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 239000002114 nanocomposite Substances 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
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000002195 synergetic effect Effects 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
Abstract
The invention relates to a honeycomb coffee carbon composite sound-insulation noise-reduction polypropylene material and a preparation method thereof, wherein the material comprises the following components in percentage by weight: 14-83 parts of polypropylene; 12-36 parts of coffee carbon master batch; 5-30 parts of talcum powder; 0-20 parts of a toughening agent; 0.1-part of antioxidant; 0.1-0.5 part of light stabilizer. The invention mainly introduces the coffee carbon master batch which takes coffee grounds as raw materials and is mainly subjected to high-temperature calcination, surface treatment and extrusion granulation into a polypropylene composite material system for automobile interior decoration, so that the powder crystalline phase and pores of the master batch present a honeycomb micropore structure, and the modified polypropylene material has excellent sound insulation and noise reduction performance by utilizing the special structure.
Description
Technical Field
The invention relates to the technical field of modification of high polymer materials, in particular to a cellular coffee carbon composite sound-insulation noise-reduction polypropylene material and a preparation method thereof.
Background
The polypropylene material has the advantages of wide source, low price, good performance and the like, and is widely applied to automobile ornaments such as instrument panels, door panels, upright posts, bumpers and the like through a blending modification technology. The resonance with the car body caused by the inner cavity of the ornament and the wind noise caused by the gap of the ornament in high-speed running can cause more noise, and the experience of the passengers in the car is influenced.
At present, some reports are respectively provided for improving the sound insulation and noise reduction performance of a modified polypropylene material, for example, patent CN 102127266B discloses a light noise reduction modified polypropylene material and a preparation method thereof, inorganic filler of hollow particles is added into a formula, and the material has a certain noise reduction function by utilizing a hollow special structure; patent CN108148282A discloses a sound insulation polypropylene composition and a preparation method thereof, wherein sound insulation polypropylene is prepared by taking organic modified nano montmorillonite as nano sound insulation filler; CN109867864A discloses a low-density high-noise-reduction polypropylene nano composite material and a preparation method thereof, wherein nano filler consisting of organic modified montmorillonite and carbon nano tubes is adopted to improve the noise reduction performance of the material. Therefore, the above methods all require adding a large amount of inorganic filler to improve the sound insulation and noise reduction performance of the material. In an effort to relieve the greenhouse benefit and further reduce the total emission of carbon dioxide gas, a green filler needs to be developed to meet the requirements of sound insulation and noise reduction of materials.
Disclosure of Invention
The invention mainly aims to provide a honeycomb coffee carbon composite sound-insulation noise-reduction polypropylene material and a preparation method thereof. The method is mainly characterized in that coffee carbon master batches which are prepared from coffee grounds serving as raw materials and mainly subjected to high-temperature calcination, surface treatment and extrusion granulation are introduced into a polypropylene composite material system for automobile interior decoration, so that the powder crystalline phase and pores of the master batches are in a honeycomb micropore structure, and the special structure is mainly utilized to enable the modified polypropylene material to have excellent sound insulation and noise reduction performances.
The invention also aims to provide a preparation method of the sound-insulation noise-reduction green polypropylene composite material.
In order to achieve the purpose, the invention adopts the following technical scheme:
the cellular coffee carbon composite sound-insulation noise-reduction polypropylene material comprises the following components in percentage by weight:
in the cellular coffee carbon composite sound-insulation noise-reduction polypropylene material,
the polypropylene is one or more of homopolymerized polypropylene or copolymerized polypropylene, and the melt index is 30-60g/10 min.
The coffee carbon master batch is prepared from the following components in parts by weight: 50-70 parts of polypropylene, 30-50 parts of coffee carbon powder, 0.5-1.0 part of antioxidant and 3-5 parts of coupling agent.
The polypropylene is one or more of homo-polypropylene or co-polypropylene, and the melt index is 10-30g/10 min; the coffee carbon powder is derived from coffee grounds, and the mesh number of the coffee carbon powder is 80-200 meshes; the coupling agent is a silane coupling agent KH 550; the antioxidant consists of a main antioxidant and an auxiliary antioxidant which are mixed in any ratio, wherein the main antioxidant is pentaerythritol ester; the auxiliary antioxidant is at least one selected from tris (2, 4-di-tert-butylphenyl) phosphite and distearyl thiodipropionate.
The toughening agent is an elastomer and is selected from one or more of ethylene-hexene copolymer, ethylene-butene copolymer, ethylene-octene copolymer, ethylene-propylene-octene terpolymer and hydrogenated ethylene-butadiene-styrene copolymer.
The antioxidant consists of a main antioxidant and an auxiliary antioxidant which are mixed in any ratio, wherein the main antioxidant is pentaerythritol ester; the auxiliary antioxidant is at least one selected from tris (2, 4-di-tert-butylphenyl) phosphite and distearyl thiodipropionate.
The light stabilizer is at least one of p-octyl phenyl salicylate and 2, 4-di-tert-butyl phenyl 3, 5-di-tert-butyl-4-hydroxybenzoate.
The cellular coffee carbon composite sound-insulation noise-reduction polypropylene material comprises the following specific steps:
(1) preparing the coffee carbon master batch:
adding polypropylene, coffee carbon powder, an antioxidant and a coupling agent into a high-speed mixer together according to the weight components, mixing for 5-10min, then transferring into an internal mixer for internal mixing, transferring the internally mixed block material to a double-wrist feeding port for feeding, extruding, air cooling and granulating by using a single-screw extruder, and finally preparing the coffee carbon master batch. Wherein the banburying temperature is set at 180 ℃ and 200 ℃, the diameter of the single screw is 70mm, the length-diameter ratio is 12, and the temperature of each section of the single screw extruder is set at 180 ℃, 190 ℃ and 200 ℃ in turn.
(2) Sound-insulation noise-reduction green polypropylene composite material and preparation method thereof
Weighing polypropylene, talcum powder, a toughening agent, an antioxidant, a light stabilizer and the like in proportion, firstly putting the materials into a high-speed mixing machine for mixing for 5-10min, adding the materials into a double-screw extruder from a main feeding port, adding coffee carbon master batches into the double-screw extruder from a lateral feeding port, carrying out melt extrusion, bracing, cooling and granulation, and finally preparing the sound-insulation noise-reduction green polypropylene composite material. The processing temperature of the screw extrusion is 100-200 ℃, and the rotating speed of the main machine is 300-500 rpm.
Compared with the prior art, the invention has the following positive effects:
according to the invention, the coffee carbon powder is added on the basis of the basic formula of the traditional polypropylene composite material, the coffee residues are used as raw materials of the powder, the powder has wide sources and belongs to a low-carbon environment-friendly material, the crystalline phase and the pores of the coffee residues are in a cellular microporous structure after high-temperature calcination, the cellular microporous structure is kept by means of a lateral feeding process, and the structure can reflect sound waves, so that the prepared composite material has the performance of sound insulation and noise reduction. In addition, the surface modification of the coffee carbon powder by the silane coupling agent not only improves the interface bonding strength of the coffee carbon powder and the polypropylene resin and ensures that the mechanical property of the coffee carbon powder to the material is not influenced, but also the interface of the coffee carbon powder and the polypropylene resin forms a micro-constrained damping structure, so that the sound wave is transmitted and weakened at the interface, and the synergistic effect of sound insulation and noise reduction is achieved.
Detailed Description
The invention aims to provide a honeycomb coffee carbon composite sound-insulation noise-reduction polypropylene material and a preparation method thereof. The following are examples and comparative examples by which the technical solution of the present invention can be further understood. The invention is not to be so limited, and all equivalent and equivalent modifications are intended to be included within the scope of the present invention.
The starting materials used in examples 1-6 and comparative examples 1 and 2 were as follows:
organic montmorillonite: YH-1075.
Polypropylene 1: melt index 50, test conditions 230 ℃ 2.16kg, commercially available;
polypropylene 2: melt index 30, test conditions 230 ℃ 2.16kg, commercially available;
talc powder: 5000 mesh, commercially available;
elastomer: ethylene-hexene copolymers, commercially available;
the antioxidant formula comprises: octadecyl thiodipropionate pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ]: dioctadecyl pentaerythritol diphosphite ═ 1:2:1, commercially available;
light stabilizer: p-octylphenyl salicylate, commercially available;
coffee grounds: 80-200 mesh, commercially available;
silane coupling agent: KH550, commercially available.
The specific embodiments of examples 1-9 are developed as follows:
A. preparing the coffee carbon master batch: adding 35.5 parts of polypropylene, 60 parts of coffee carbon powder, 0.5 part of antioxidant and 4 parts of coupling agent into a high-speed mixer together according to the weight components, mixing for 10min, then transferring into an internal mixer for internal mixing, transferring the internally mixed blocky material to a double-wrist feeding port for feeding, extruding, air cooling and granulating by using a single-screw extruder, and finally preparing the coffee carbon master batch. Wherein the banburying temperature is set at 200 ℃, the diameter of the single screw is 70mm, the length-diameter ratio is 12, and the temperature of each section of the single screw extruder is set at 180 ℃, 190 ℃ and 200 ℃ in sequence.
B. The sound-insulation noise-reduction green polypropylene composite material and the preparation method thereof are as follows: weighing the first 6 components in the table 1 according to a proportion, firstly putting the components into a high-speed mixing machine for mixing for 10min, adding the components into a double-screw extruder from a main feeding port, adding the coffee carbon master batch into the double-screw extruder from a lateral feeding port according to a certain proportion, carrying out melt extrusion, bracing, cooling and granulation, and finally preparing the sound-insulating noise-reducing green polypropylene composite material. The processing temperature of screw extrusion is 180 ℃, and the rotating speed of a main machine is 400 rpm.
The specific implementation of comparative examples 1 to 3 was as follows: the components in the table 1 are weighed according to the proportion, firstly placed into a high-speed mixing machine to be mixed for 5-10min, added into a double-screw extruder from a main feeding port, and subjected to melt extrusion, bracing, cooling and granulation to finally prepare the polypropylene composite material. The processing temperature of screw extrusion is 180 ℃, and the rotating speed of a main machine is 400 rpm.
And (3) testing basic mechanical properties: the tensile strength is detected according to ISO527-2 standard, and the test speed is 5 mm/min; the flexural modulus is detected according to ISO178 standard, the span is 64mm, and the test speed is 2 mm/min; the impact strength of the notch of the simply supported beam is detected according to the ISO179-1 standard, and the notch of the sample strip is of an A type; the sound insulation performance test is carried out according to the GB/T18696.2 standard, the thickness of the sample is 3mm, and the sound source frequency is 400 Hz.
TABLE 1 compositions of modified Polypropylene materials and results of the dissipation factor test (in the table, the contents of the compositions are in weight percent)
TABLE 2 relevant test results for modified Polypropylene materials
Table 2 shows the test results of the sound-insulating and noise-reducing green polypropylene composite for automobiles. As can be seen from the table, after the coffee carbon powder with different proportions is added into the polypropylene composite material, compared with the organic montmorillonite modified polypropylene composite material (comparative example 1), the mechanical property of the material is basically kept unchanged, and the sound insulation quantity is greatly improved. When the filling amount of the talcum powder is 10 parts, the sound insulation amount of the material is increased from 15.5dB to 22.2dB along with the increase of the content of the coffee carbon; when the filling amount of the talc powder was 20 parts, the material showed a tendency to change in sound insulation amount in accordance with the case where the filling amount of the talc powder was 10 parts, and when the content of the coffee carbon powder was 7.2 parts, the material showed a sound insulation amount of 27.3dB and higher than that of comparative example 1. Therefore, the green polypropylene composite material with sound insulation and noise reduction performances can be prepared by introducing the coffee carbon master batch which takes coffee grounds as raw materials and is mainly subjected to high-temperature calcination, surface treatment and extrusion granulation into the polypropylene composite material system for automobile interior decoration.
Claims (10)
1. The utility model provides a compound polypropylene materials that makes an uproar that falls that gives sound insulation of honeycomb coffee charcoal which characterized in that: the paint comprises the following components in percentage by weight:
2. the cellular coffee carbon composite sound-insulation noise-reduction polypropylene material as claimed in claim 1, wherein: the polypropylene is one or more of homopolymerized polypropylene or copolymerized polypropylene, and the melt index is 30-60g/10 min.
3. The cellular coffee carbon composite sound-insulation noise-reduction polypropylene material as claimed in claim 1, wherein: the coffee carbon master batch is prepared from the following components in parts by weight: 50-70 parts of polypropylene, 30-50 parts of coffee carbon powder, 0.5-1.0 part of antioxidant and 3-5 parts of coupling agent.
4. The cellular coffee carbon composite sound-insulation noise-reduction polypropylene material as claimed in claim 1, wherein: the polypropylene is one or more of homo-polypropylene or co-polypropylene, and the melt index is 10-30g/10 min; the coffee carbon powder is derived from coffee grounds, and the mesh number of the coffee carbon powder is 80-200 meshes.
5. The cellular coffee carbon composite sound-insulation noise-reduction polypropylene material as claimed in claim 1, wherein: the coupling agent is a silane coupling agent KH 550.
6. The cellular coffee carbon composite sound-insulation noise-reduction polypropylene material as claimed in claim 1, wherein: the antioxidant consists of a main antioxidant and an auxiliary antioxidant which are mixed in any ratio, wherein the main antioxidant is pentaerythritol ester; the auxiliary antioxidant is at least one selected from tris (2, 4-di-tert-butylphenyl) phosphite and distearyl thiodipropionate.
7. The cellular coffee carbon composite sound-insulation noise-reduction polypropylene material as claimed in claim 1, wherein: the toughening agent is an elastomer and is selected from one or more of ethylene-hexene copolymer, ethylene-butene copolymer, ethylene-octene copolymer, ethylene-propylene-octene terpolymer and hydrogenated ethylene-butadiene-styrene copolymer.
8. The cellular coffee carbon composite sound-insulation noise-reduction polypropylene material as claimed in claim 1, wherein: the light stabilizer is at least one of p-octyl phenyl salicylate and 2, 4-di-tert-butyl phenyl 3, 5-di-tert-butyl-4-hydroxybenzoate.
9. The preparation method of the cellular coffee carbon composite sound-insulation noise-reduction polypropylene material of any one of claims 1 to 8 is characterized by comprising the following specific steps:
(1) preparing the coffee carbon master batch:
adding polypropylene, coffee carbon powder, an antioxidant and a coupling agent into a high-speed mixer together according to the weight components, mixing for 5-10min, then transferring into an internal mixer for internal mixing, transferring the internally mixed block material to a double-wrist feeding port for feeding, extruding, air cooling and granulating by using a single-screw extruder, and finally preparing the coffee carbon master batch. Wherein the banburying temperature is set at 180 ℃ and 200 ℃, the diameter of the single screw is 70mm, the length-diameter ratio is 12, and the temperature of each section of the single screw extruder is set at 180 ℃, 190 ℃ and 200 ℃ in sequence;
(2) the sound-insulation noise-reduction green polypropylene composite material and the preparation method thereof are characterized in that polypropylene, talcum powder, a toughening agent, an antioxidant, a light stabilizer and the like are weighed according to a proportion, are firstly put into a high-speed mixing machine to be mixed for 5-10min, are added into a double-screw extruder from a main feeding port, coffee carbon master batches are added into the double-screw extruder from a lateral feeding port, and are subjected to melt extrusion, bracing, cooling and granulation to finally prepare the sound-insulation noise-reduction green polypropylene composite material.
10. The method for preparing the cellular coffee carbon composite sound-insulation noise-reduction polypropylene material as claimed in claim 9, wherein the processing temperature of screw extrusion is 100-.
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| CN202111597506.1A CN114409998A (en) | 2021-12-24 | 2021-12-24 | Honeycomb coffee carbon composite sound-insulation noise-reduction polypropylene material and preparation method thereof |
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| CN202111597506.1A CN114409998A (en) | 2021-12-24 | 2021-12-24 | Honeycomb coffee carbon composite sound-insulation noise-reduction polypropylene material and preparation method thereof |
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2021
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