CN115926325B - High-strength composite polypropylene-based material and application thereof - Google Patents
High-strength composite polypropylene-based material and application thereof Download PDFInfo
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- -1 polypropylene Polymers 0.000 title claims abstract description 66
- 239000000463 material Substances 0.000 title claims abstract description 50
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 45
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 45
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 239000000155 melt Substances 0.000 claims abstract description 50
- 239000004698 Polyethylene Substances 0.000 claims abstract description 21
- 229920000573 polyethylene Polymers 0.000 claims abstract description 21
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 17
- 239000000314 lubricant Substances 0.000 claims abstract description 17
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 claims abstract description 16
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000005977 Ethylene Substances 0.000 claims abstract description 16
- 229920001577 copolymer Polymers 0.000 claims abstract description 16
- 239000002210 silicon-based material Substances 0.000 claims abstract description 16
- 239000004609 Impact Modifier Substances 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract 2
- 239000012188 paraffin wax Substances 0.000 claims description 20
- 239000000919 ceramic Substances 0.000 claims description 18
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 17
- 235000021355 Stearic acid Nutrition 0.000 claims description 16
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 16
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 16
- 239000008117 stearic acid Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 14
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000011863 silicon-based powder Substances 0.000 claims description 9
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 2
- 229910052882 wollastonite Inorganic materials 0.000 claims description 2
- 239000010456 wollastonite Substances 0.000 claims description 2
- 239000005909 Kieselgur Substances 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 11
- 238000001514 detection method Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical class O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
The invention relates to a composite polypropylene-based material (IPC class number: C08L 23/06), in particular to a high-strength composite polypropylene-based material and application thereof. The high-strength composite polypropylene-based material comprises the following raw materials in percentage by weight: 15 to 19 percent of polypropylene with the melt flow rate of 30 to 35g/10min, 9 to 13 percent of polyethylene with the melt flow rate of 0.8 to 1g/10min, 1to 3 percent of copolymer of ethylene and octene, 0.3 to 0.9 percent of impact modifier, 0.3 to 0.7 percent of lubricant, 5.5 to 6.4 percent of auxiliary agent and the balance of silicon material. The hollow plate wardrobe provided by the invention has good impact resistance, excellent smoothness and flatness, light weight, durability, sanitation and environmental protection.
Description
Technical Field
The invention relates to a composite polypropylene-based material (IPC class number: C08L 23/06), in particular to a high-strength composite polypropylene-based material and application thereof.
Background
With the continuous development of science and technology and economy, daily products produced from plastics play an increasingly important role in life. The wardrobe is used as furniture for frequent use, is portable and portable, has excellent mechanical properties and the like, and determines the competitive advantage of a wardrobe manufacturer.
Patent application CN201710457424.4 discloses an outdoor polystyrene composite material and a preparation method thereof, and the prepared product can be used as a wardrobe and has good mechanical property and thermal oxidative aging resistance. However, in this patent, a large amount of wood flour is used, and the weight thereof is greatly increased, and the carrying thereof is inconvenient.
Therefore, the hollow plate wardrobe provided by the invention has good impact resistance, excellent smoothness and flatness, light weight, durability, sanitation and environmental protection.
Disclosure of Invention
In order to solve the above problems, a first aspect of the present invention provides a high-strength composite polypropylene-based material, which comprises, in weight percent: 15 to 19 percent of polypropylene with the melt flow rate of 30 to 35g/10min, 9 to 13 percent of polyethylene with the melt flow rate of 0.8 to 1g/10min, 1 to 3 percent of copolymer of ethylene and octene, 0.3 to 0.9 percent of impact modifier, 0.3 to 0.7 percent of lubricant, 5.5 to 6.4 percent of auxiliary agent and the balance of silicon material.
Preferably, the polypropylene having a melt flow rate of 30 to 35g/10min has a Rockwell hardness of 70 to 80 (R-grade, test method: ASTM D785), commercially available, for example, taiwan-style K3029.
Preferably, the density of the polyethylene with the melt flow rate of 0.8-1 g/10min is 0.9-1 g/cm 3, and the powder ash content of the polyethylene is less than 0.05%.
Further preferably, the polyethylene having a melt flow rate of 0.8 to 1g/10min is purchased from crape for 5000S.
Further preferably, the polypropylene with the melt flow rate of 30-35 g/10min and the polyethylene with the melt flow rate of 0.8-1 g/10min have the weight ratio of (1.4-1.6): 1.
Preferably, the silicon material is one or more of diatomite, wollastonite, quartz powder and silicon powder.
Preferably, the silicon material is silicon powder; the average grain diameter of the silicon powder is 1000-1400 meshes, the average grain diameter of the silicon powder is 1200 meshes, and the silicon powder is purchased from Jiangsu Yongshun new material science and technology Co.
Preferably, the copolymer of ethylene and octene has a density of 880-890 g/cm 3 and a melt flow rate of 1.0-1.4 g/10min at 190 ℃.
Further preferably, the copolymer of ethylene and octene has a density of 885g/cm 3, a melt flow rate of 1.2g/10min,190℃and is purchased from DF810 of Mitsui chemistry.
Preferably, the impact modifier is chlorinated polyethylene, commercially available, such as CPE-135A from Dongguan, hongfu New Material Co.
Preferably, the lubricant is one or more of stearic acid and paraffin wax.
Further preferably, the lubricant is a mixture of stearic acid and paraffin wax.
Further preferably, the weight ratio of the stearic acid to the paraffin is 1: (1.1-1.3).
Further preferably, the stearic acid is commercially available, for example, form Indonesia 1801 sold by Jinan Wei chemical technology Co., ltd; the paraffin wax is commercially available, for example, paraffin wax # 58 sold by Xiang-mao International trade (Changzhou) Co., ltd.
Preferably, the auxiliary agent is one or more of aluminum oxide, paraffin, zinc stearate, ceramic micropowder and magnesium oxide.
Further preferably, the auxiliary agent is a mixture of aluminum oxide, zinc stearate and ceramic micro powder.
Further preferably, the aluminum oxide is commercially available, for example, from Nantong Runfeng petrochemical Co.
Further preferably, the particle size of the ceramic fine powder is 5000 to 7000 mesh, and the mohs hardness is 4 to 6; commercially available, for example 6000 from Shanghai Hui Jing sub-nanometer New Material Co., ltd.
Further preferably, the zinc stearate has a particle size of 150 to 250 mesh and a density of 1.0 to 1.1g/cm 3, commercially available from 168 of the Changzhou Leu Kogyo Co.
Further preferably, the weight ratio of the aluminum oxide to the zinc stearate to the ceramic micro powder is 1: (0.4-0.8): 1.
The third aspect of the present invention provides a method for producing a high-strength composite polypropylene-based material, comprising the steps of:
(1) Polypropylene with the melt flow rate of 30-35 g/10min, polyethylene with the melt flow rate of 0.8-1 g/10min, a silicon material, a copolymer of ethylene and octene, an impact modifier, a lubricant and an auxiliary agent are strictly weighed according to the proportion, added into a mixer, stirred uniformly and sent to a charging barrel to be melted at 160-180 ℃.
(2) And (3) feeding the melted material in the step (1) into a die through a filter screen, and extruding, wherein the temperature of the die is 200 ℃.
(3) And (3) feeding the material extruded from the die in the step (2) into a shaper, feeding the material into a traction roller way through the shaper, and feeding the material into a required specification at a cutting position of a plate shearing machine through the traction roller.
The beneficial effects are that:
1. The invention limits the copolymerization polypropylene with the melt flow rate of 60-80 g/10min, and the weight ratio of polyethylene with the melt flow rate of 0.8-1 g/10min is (1.4-1.6): 1, the compatibility of the mixed system part is effectively improved, the processing performance is improved, and the elongation at break of the product is also improved.
2. The weight ratio of stearic acid to paraffin is defined as 1: (1.1-1.3). The smoothness and flatness of the hollow plate wardrobe are improved while the processability of the reinforced polypropylene material is effectively improved.
3. According to the invention, through the synergistic effect of the aluminum oxide, the zinc stearate with the particle size of 150-250 meshes and the ceramic micro powder with the particle size of 5000-7000 meshes, when the weight ratio of the aluminum oxide to the zinc stearate to the ceramic micro powder is 1: (0.4-0.8): 1, the processability and the compatibility of the composite polypropylene-based material are greatly improved, and the impact strength of the product is also improved.
Detailed Description
Examples
Example 1
The example 1 provides a composite polypropylene-based material, which comprises, by weight, 17% of polypropylene with a melt flow rate of 30-35 g/10min, 11% of polyethylene with a melt flow rate of 0.8-1 g/10min, 2% of a copolymer of ethylene and octene, 0.6% of an impact modifier, 0.5% of a lubricant, 5.9% of an auxiliary agent and 63% of a silicon material.
The polypropylene of this example has a melt flow rate of from 30 to 35g/10min and a melt flow rate of 32g/10min and a Rockwell hardness of 75, purchased from Taiwan under the heading K3029.
The polyethylene of this example has a melt flow rate of 0.8 to 1g/10min and a melt flow rate of 0.9g/10min, purchased from Yanshan petrochemical industry.
The silicon material of this example is silicon powder with an average particle size of 1200 mesh purchased from Jiangsu Yongshun New Material technology Co.
The copolymer of ethylene and octene of this example has a density of 885g/cm 3, a melt index of 1.2g/10min,190℃and is purchased from DF810 of Mitsui chemistry.
The impact modifier of this example is chlorinated polyethylene, CPE-135A purchased from Dongguan macro Fu New Material Co., ltd.
The lubricant of this example is a mixture of stearic acid and paraffin wax; the weight ratio of the stearic acid to the paraffin is 1:1.2.
Stearic acid of this example, indonesia model 1801 sold by Jinan Wei chemical technology Co., ltd; the paraffin wax was purchased from paraffin wax 58# sold by Xiang-metallocene International trade (Changzhou) Co.
The auxiliary agent in the embodiment is a mixture of aluminum oxide, zinc stearate and ceramic micro powder; the weight ratio of the aluminum oxide to the zinc stearate to the ceramic micro powder is 1:0.6:1.
The particle size of the ceramic micropowder of this example was 6000 mesh, and the mohs hardness was 5 and was purchased from Shanghai hui fine and sub-nanometer new materials limited.
The zinc stearate of this example had a particle size of 200 mesh and a density of 1.095g/cm 3 and was purchased from 168 of Changzhou Lehuang commercial Co.
The alumina of this example is commercially available, for example, from Nantong Runfeng petrochemical Co.
The embodiment provides a preparation method of a high-strength composite polypropylene-based material, which comprises the following steps:
(1) Polypropylene with the melt flow rate of 30-35 g/10min, polyethylene with the melt flow rate of 0.8-1 g/10min, a silicon material, a copolymer of ethylene and octene, an impact modifier, a lubricant and an auxiliary agent are strictly weighed according to the proportion, added into a mixer, evenly stirred, sent to a charging barrel and melted at 170 ℃.
(2) And (3) feeding the melted material in the step (1) into a die through a filter screen, and extruding, wherein the temperature of the die is 200 ℃.
(3) And (3) feeding the material extruded from the die in the step (2) into a shaper, feeding the material into a traction roller way through the shaper, and feeding the material into a required specification at a cutting position of a plate shearing machine through the traction roller.
Example 2
The example 2 provides a composite polypropylene-based material, which comprises, by weight, 16% of polypropylene with a melt flow rate of 30-35 g/10min, 12% of polyethylene with a melt flow rate of 0.8-1 g/10min, 1% of a copolymer of ethylene and octene, 0.6% of an impact modifier, 0.5% of a lubricant, 6.9% of an auxiliary agent and 63% of a silicon material.
The polypropylene of this example has a melt flow rate of from 30 to 35g/10min and a melt flow rate of 32g/10min and a Rockwell hardness of 75, purchased from Taiwan under the heading K3029.
The polyethylene of this example has a melt flow rate of 0.8 to 1g/10min and a melt flow rate of 0.9g/10min, purchased from Yanshan petrochemical industry.
The silicon material of this example is silicon powder with an average particle size of 1200 mesh purchased from Jiangsu Yongshun New Material technology Co.
The copolymer of ethylene and octene of this example has a density of 885g/cm 3, a melt index of 1.2g/10min,190℃and is purchased from DF810 of Mitsui chemistry.
The impact modifier of this example is chlorinated polyethylene, CPE-135A purchased from Dongguan macro Fu New Material Co., ltd.
The lubricant of this example is a mixture of stearic acid and paraffin wax; the weight ratio of the stearic acid to the paraffin is 1:1.2.
Stearic acid of this example, indonesia model 1801 sold by Jinan Wei chemical technology Co., ltd; the paraffin wax was purchased from paraffin wax 58# sold by Xiang-metallocene International trade (Changzhou) Co.
The auxiliary agent in the embodiment is a mixture of aluminum oxide, zinc stearate and ceramic micro powder; the weight ratio of the aluminum oxide to the zinc stearate to the ceramic micro powder is 1:0.6:1.
The particle size of the ceramic micropowder of this example was 6000 mesh, and the mohs hardness was 5 and was purchased from Shanghai hui fine and sub-nanometer new materials limited.
The zinc stearate of this example had a particle size of 200 mesh and a density of 1.095g/cm 3 and was purchased from 168 of Changzhou Lehuang commercial Co.
The alumina of this example is commercially available, for example, from Nantong Runfeng petrochemical Co.
The embodiment provides a preparation method of a high-strength composite polypropylene-based material, which comprises the following steps:
(1) Polypropylene with the melt flow rate of 30-35 g/10min, polyethylene with the melt flow rate of 0.8-1 g/10min, a silicon material, a copolymer of ethylene and octene, an impact modifier, a lubricant and an auxiliary agent are strictly weighed according to the proportion, added into a mixer, evenly stirred, sent to a charging barrel and melted at 170 ℃.
(2) And (3) feeding the melted material in the step (1) into a die through a filter screen, and extruding, wherein the temperature of the die is 200 ℃.
(3) And (3) feeding the material extruded from the die in the step (2) into a shaper, feeding the material into a traction roller way through the shaper, and feeding the material into a required specification at a cutting position of a plate shearing machine through the traction roller.
Example 3
The example 3 provides a composite polypropylene-based material, which comprises, by weight, 17% of polypropylene with a melt flow rate of 30-35 g/10min, 11% of polyethylene with a melt flow rate of 0.8-1 g/10min, 2% of a copolymer of ethylene and octene, 0.6% of an impact modifier, 0.5% of a lubricant, 5.9% of an auxiliary agent and 63% of a silicon material.
The polypropylene of this example has a melt flow rate of from 30 to 35g/10min and a melt flow rate of 32g/10min and a Rockwell hardness of 75, purchased from Taiwan under the heading K3029.
The polyethylene of this example has a melt flow rate of 0.8 to 1g/10min and a melt flow rate of 0.9g/10min, purchased from Yanshan petrochemical industry.
The silicon material of this example is silicon powder with an average particle size of 1200 mesh purchased from Jiangsu Yongshun New Material technology Co.
The copolymer of ethylene and octene of this example has a density of 885g/cm 3, a melt index of 1.2g/10min,190℃and is purchased from DF810 of Mitsui chemistry.
The impact modifier of this example is chlorinated polyethylene, CPE-135A purchased from Dongguan macro Fu New Material Co., ltd.
The lubricant of this example is a mixture of stearic acid and paraffin wax; the weight ratio of the stearic acid to the paraffin is 1:1.1.
Stearic acid of this example, indonesia model 1801 sold by Jinan Wei chemical technology Co., ltd; the paraffin wax was purchased from paraffin wax 58# sold by Xiang-metallocene International trade (Changzhou) Co.
The auxiliary agent in the embodiment is a mixture of aluminum oxide, zinc stearate and ceramic micro powder; the weight ratio of the aluminum oxide to the zinc stearate to the ceramic micro powder is 1:0.6:1.
The particle size of the ceramic micropowder of this example was 6000 mesh, and the mohs hardness was 5 and was purchased from Shanghai hui fine and sub-nanometer new materials limited.
The zinc stearate of this example had a particle size of 200 mesh and a density of 1.095g/cm 3 and was purchased from 168 of Changzhou Lehuang commercial Co.
The alumina of this example was purchased from Nantong Runfeng petrochemical Co.
The embodiment provides a preparation method of a high-strength composite polypropylene-based material, which comprises the following steps:
(1) Polypropylene with the melt flow rate of 30-35 g/10min, polyethylene with the melt flow rate of 0.8-1 g/10min, a silicon material, a copolymer of ethylene and octene, an impact modifier, a lubricant and an auxiliary agent are strictly weighed according to the proportion, added into a mixer, evenly stirred, sent to a charging barrel and melted at 170 ℃.
(2) And (3) feeding the melted material in the step (1) into a die through a filter screen, and extruding, wherein the temperature of the die is 200 ℃.
(3) And (3) feeding the material extruded from the die in the step (2) into a shaper, feeding the material into a traction roller way through the shaper, and feeding the material into a required specification at a cutting position of a plate shearing machine through the traction roller.
Comparative example 1
The embodiment of comparative example 1 is the same as example 1; in contrast, comparative example 1 had a melt flow rate of 30 to 35g/10min for polypropylene 20% and 0.8 to 1g/10min for polyethylene 8%.
Comparative example 2
The embodiment of comparative example 2 is the same as example 1; in contrast, the lubricant in comparative example 2 was stearic acid.
Comparative example 3
The embodiment of comparative example 3 is the same as example 1; the difference is that the auxiliary agent in the comparative example 3 is zinc stearate, and the weight ratio of the ceramic micro powder is 0.6:1.
Performance test data:
the performance test in this example 1-3 and comparative example 1-3 was performed with injection molded bars at a temperature of 200℃and a baked material temperature of 90 ℃.
(1) Density: detecting according to GB/T1033, wherein the detection temperature is as follows: 23 ℃; detection instrument: ZMD series electron densitometer.
(2) Elongation at break: detecting according to GB/T1040, detecting instrument: a universal tensile testing machine. Detection conditions: 50mm/min.
(3) Notched impact strength: detection is carried out according to GB/T1843, and the detection instrument is as follows: cantilever beam impact testing machine.
Table 1 shows the performance test of the composite polypropylene-based materials prepared in examples 1 to 3 and comparative examples 1 to 3
TABLE 1
Claims (8)
1. The high-strength composite polypropylene-based material is characterized by comprising the following raw materials in percentage by weight: 15 to 19 percent of polypropylene with the melt flow rate of 30 to 35g/10min, 9 to 13 percent of polyethylene with the melt flow rate of 0.8 to 1g/10min, 1 to 3 percent of copolymer of ethylene and octene, 0.3 to 0.9 percent of impact modifier, 0.3 to 0.7 percent of lubricant, 5.5 to 6.4 percent of auxiliary agent and the balance of silicon material;
The auxiliary agent is a mixture of aluminum oxide, zinc stearate and ceramic micro powder, and the weight ratio is 1: (0.4-0.8): 1, a step of; the grain diameter of the ceramic micro powder is 5000-7000 meshes, and the Mohs hardness is 4-6; the particle size of the zinc stearate is 150-250 meshes, and the density is 1.0-1.1 g/cm 3;
the lubricant is a mixture of stearic acid and paraffin wax, and the weight ratio is 1: (1.1-1.3).
2. The composite polypropylene-based material according to claim 1, wherein the polypropylene having a melt flow rate of 30 to 35g/10min has a rockwell hardness of 70 to 80.
3. The composite polypropylene-based material according to claim 1, wherein the polyethylene having a melt flow rate of 0.8 to 1g/10min has a density of 0.9 to 1g/cm 3.
4. The composite polypropylene-based material according to claim 1, wherein the polypropylene having a melt flow rate of 30 to 35g/10min and the polyethylene having a melt flow rate of 0.8 to 1g/10min have a weight ratio of (1.4 to 1.6): 1.
5. The composite polypropylene-based material according to claim 1, wherein the silicon material is one or more of diatomaceous earth, wollastonite, quartz powder, and silicon powder.
6. The composite polypropylene-based material according to claim 1, wherein the copolymer of ethylene and octene has a density of 880-890 g/cm 3 and a melt flow rate of 1.0-1.4 g/10min at 190 ℃.
7. The composite polypropylene-based material of claim 1, wherein the impact modifier is chlorinated polyethylene.
8. Use of a composite polypropylene-based material according to any one of claims 1 to 7, in a hollow panel wardrobe.
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CN114031849A (en) * | 2021-11-19 | 2022-02-11 | 苏州汇源塑胶制品有限公司 | Ultralow-temperature-resistant middle plate and preparation method thereof |
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