CN116444983A - Polyamide composite material and preparation method and application thereof - Google Patents
Polyamide composite material and preparation method and application thereof Download PDFInfo
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- CN116444983A CN116444983A CN202310404226.7A CN202310404226A CN116444983A CN 116444983 A CN116444983 A CN 116444983A CN 202310404226 A CN202310404226 A CN 202310404226A CN 116444983 A CN116444983 A CN 116444983A
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- composite material
- polyamide composite
- boron nitride
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- 239000004952 Polyamide Substances 0.000 title claims abstract description 27
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 229920002647 polyamide Polymers 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 229910052582 BN Inorganic materials 0.000 claims abstract description 40
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000314 lubricant Substances 0.000 claims description 5
- 239000003963 antioxidant agent Substances 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 4
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 22
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 239000000945 filler Substances 0.000 description 8
- 239000011787 zinc oxide Substances 0.000 description 6
- 239000004677 Nylon Substances 0.000 description 4
- 229920006351 engineering plastic Polymers 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- OKOBUGCCXMIKDM-UHFFFAOYSA-N Irganox 1098 Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)NCCCCCCNC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 OKOBUGCCXMIKDM-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 239000004368 Modified starch Substances 0.000 description 1
- GWFGDXZQZYMSMJ-UHFFFAOYSA-N Octadecansaeure-heptadecylester Natural products CCCCCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCCCCCC GWFGDXZQZYMSMJ-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 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 1
- 229940053200 antiepileptics fatty acid derivative Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- -1 fatty acid esters Chemical class 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
- NKBWPOSQERPBFI-UHFFFAOYSA-N octadecyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCCCCCC NKBWPOSQERPBFI-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/16—Solid spheres
- C08K7/18—Solid spheres inorganic
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
Landscapes
- 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)
Abstract
The invention discloses a polyamide composite material, a preparation method and application thereof, wherein the polyamide composite material comprises the following components in parts by weight: 35-80 parts of PA66 or PA 6; 5-30 parts of spherical boron nitride; 5-30 parts of acicular boron nitride. The invention can not only promote the heat conductivity of the polyamide composite material, but also ensure that the polyamide composite material has good mechanical properties.
Description
Technical Field
The invention relates to the technical field of engineering plastics, in particular to a polyamide composite material and a preparation method and application thereof.
Background
Nylon is the earliest synthetic fiber developed and can be used as a fiber or engineering plastic. Nylon has good comprehensive properties such as high strength, good rigidity, good impact resistance, oil resistance, chemicals, wear resistance, self-lubricating property and the like, and the raw materials are easy to obtain and low in cost, so that the nylon is widely applied to the fields of industry, clothing, engineering plastics and the like. The nylon material after the glass fiber reinforced flame retardant modification has higher mechanical strength and better flame retardance, and can replace some metals and other thermoplastic engineering plastics in the aspect of electronic and electrical appliance application.
The heat conductivity of the heat conducting materials on the market at present is difficult to be improved, and even if the heat conductivity can be improved, the overall mechanical property is seriously deteriorated, so that the possibility of practical use of the materials is lost. Therefore, how to improve the thermal conductivity of the material and ensure the mechanical properties of the material is a problem to be solved.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a polyamide composite material, and a preparation method and application thereof. The specific technical scheme is as follows:
the polyamide composite material comprises the following components in parts by weight:
35-80 parts of PA66 or PA 6;
5-30 parts of spherical boron nitride;
5-30 parts of acicular boron nitride.
PA66, molecular formula: (C) 10 H 22 N 2 O 2 ) n Melting point: 250-260 ℃, density: 1.14-1.47 g/mL (25 ℃), and relative viscosity 230-280.
PA6, molecular formula: [ -NH (CH) 2 ) 5 CO-] n Melting point: 215-225 c,density: 1.13-1.15 g/mL (25 ℃).
Further, the sphericity of the spherical boron nitride is 0.8 to 1, preferably 0.85 to 1. Sphericity characterizes parameters of particle morphology. The closer the morphology is to a sphere, the closer its sphericity is to 1. Sphericity is the ratio of the surface area of a sphere of the same volume of an object to the surface area of the object. The sphericity is measured according to GB/T37406-2019.
Further, the aspect ratio of the needle-like boron nitride is 3 to 10, preferably 4 to 8. The spherical boron nitride heat-conducting filler and the needle-shaped boron nitride heat-conducting filler are compounded, the needle-shaped heat-conducting filler is used for filling gaps in the spherical heat-conducting filler, the heat-conducting passage of the material is enhanced, and the heat conductivity of the material is greatly improved.
Further, the mass content of the spherical boron nitride in the polyamide composite material is 5-32wt%; the mass content of the acicular boron nitride in the polyamide composite material is 5-32wt%.
Further, the weight ratio of the spherical boron nitride to the needle-like boron nitride is in the range of (0.3-2.5): 1, preferably (0.5-2): 1.
further, the polyamide composite material further comprises 0.2 to 0.3 parts by weight of an auxiliary agent. The auxiliary agent is an antioxidant and/or a lubricant.
The antioxidant is one or more of antioxidant 1098, antioxidant 1010, antioxidant 1076 and antioxidant 168.
The lubricant may be a fatty acid-based lubricant selected from one or more of fatty acids, fatty acid derivatives or fatty acid esters.
The invention also provides a preparation method of the polyamide composite material, which comprises the following steps:
s1, weighing the components according to the proportion, and premixing to obtain a premix;
s2: and (3) putting the premix in the step (S1) into an extruder, carrying out melt blending, extruding and granulating to obtain the polyamide composite material.
Further, the extruder is a twin screw extruder having a screw aspect ratio of (40-48): 1, the barrel temperature of the double-screw extruder is 200-275 ℃, and the screw rotating speed of the double-screw extruder is 250-500rpm.
The invention also provides application of the polyamide composite material in preparing electronic appliances, such as breaker shells, battery supports and the like.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts the spherical boron nitride heat-conducting filler and the needle-shaped boron nitride heat-conducting filler to compound, can solve the problem of low heat conductivity of the existing material, and has higher mechanical property. The high-voltage power supply can be applied to the field of mature piezoelectric devices, can be applied to the new energy industry which is emerging at present, can reduce the use temperature of products and improves the safety performance. The polyamide composite material has the thermal conductivity of 0.72-2.34W/m.K and the tensile strength of 78.3-85.2MPa.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
< preparation of examples and comparative examples >
The raw materials used in the examples and comparative examples of the present invention are all commercially available, but are not limited to these materials:
PA66: brand PA66 EP-158, available from Zhejiang Huafeng group;
PA6: brand PA6 HY-2500A, jiangsu sea-yang chemical fiber Co., ltd;
spherical boron nitride a: the sphericity is 0.85, the brand BNH-1 is purchased from Shandong Jing Yi New Material Co., ltd;
spherical boron nitride B: sphericity is 1, brand BNH-7, purchased from Shandong Jing Yi New Material Co., ltd;
spherical boron nitride C: the sphericity is 0.8, the brand is BHN-3, and the spherical modified starch is purchased from Shandong Jing Yi New Material Co., ltd;
acicular boron nitride a: the length-diameter ratio is 4, the brand PN15 is purchased from Shandong Yi New Material Co., ltd;
needle-like boron nitride B: the length-diameter ratio is 8, the brand PN45 is purchased from Shandong Yi New Material Co., ltd;
acicular boron nitride C: aspect ratio is 3, brand PN03, purchased from Shandong Yi New Material Co., ltd;
acicular boron nitride D: the length-diameter ratio is 10, the brand PN10 is purchased from Shandong Yi New Material Co., ltd;
spherical zinc oxide: the trade name XT-0806-6-1 is purchased from Shanghai lane field nanometer materials Co., ltd;
needle-like zinc oxide: the trade name XT-0806-6-3 is purchased from Shanghai lane field nanometer materials Co., ltd;
an antioxidant: antioxidant 1098, commercially available, the same commercially available product was used in parallel experiments;
and (3) a lubricant: stearyl stearate, commercially available, was used in parallel experiments using the same commercially available product.
The preparation methods of the examples and comparative examples of the present invention are as follows:
s1, weighing the components according to the proportion of the table 1 and the table 3, and premixing to obtain a premix;
s2: and (3) putting the premix in the step (S1) into a double-screw extruder, carrying out melt blending, extruding and granulating to obtain the polyamide composite material.
The screw aspect ratio of the twin-screw extruder was 40:1, the screw cylinder temperature of the double-screw extruder is 260 ℃, and the screw rotating speed of the double-screw extruder is 400r/min.
< test Standard >
The performance test criteria for each of the examples and comparative examples of the present invention are as follows:
tensile strength: reference standard ISO 527-2:2012, stretching speed is 10mm/min;
thermal conductivity: the vertical thermal conductivity was measured according to ASTM E1461-2013 laser method, and the measured thickness was 1.0mm.
TABLE 1 examples 1-12 formulations (parts by weight)
TABLE 2 Performance test results for examples 1-12
Table 3. Comparative examples 1-6 formulations (unit: parts by weight)
TABLE 4 Performance test results for comparative examples 1-6
Comparative examples 1 and 2 compared with example 1, comparative example 1 was free of needle-like boron nitride and comparative example 2 was free of spherical boron nitride, both of which were free of a manner of compounding needle-like boron nitride with spherical boron nitride, thermal conductivities of comparative example 1 and comparative example 2 were lowered, and tensile strengths were inferior to those of example 1.
The comparative examples 3 and 4 were not as good as example 1, and the addition of too much or too little spherical boron nitride reduced the thermal conductivity of the material.
Comparative examples 5 and 6 were added in excess of comparative example 5 needle-like boron nitride and in too little of comparative example 6 needle-like boron nitride as compared with example 1, both of the thermal conductivities of comparative examples 5 and 6 were lower than that of example 1, and the tensile strength was not as good as that of example 1.
Comparative example 7 was not added with spherical boron nitride, but with spherical zinc oxide, comparative example 7 was lower in thermal conductivity than example 1, and not as strong in tensile strength as example 1.
Comparative example 8 was not added with needle-like boron nitride, but with needle-like zinc oxide, comparative example 8 was lower in thermal conductivity than example 1 and inferior in tensile strength to example 1.
Comparative example 9 was free of needle-like boron nitride and spherical boron nitride, whereas needle-like zinc oxide and spherical zinc oxide were added, comparative example 9 was far lower in thermal conductivity than example 1, and far lower in tensile strength than example 1.
The invention adopts the spherical boron nitride heat-conducting filler and the needle-shaped boron nitride heat-conducting filler to compound, can solve the problem of low heat conductivity of the existing material, and has higher mechanical property. The high-voltage power supply can be applied to the field of mature piezoelectric devices, can be applied to the new energy industry which is emerging at present, can reduce the use temperature of products and improves the safety performance. The polyamide composite material has the thermal conductivity of 0.72-2.34W/m.K and the tensile strength of 78.3-85.2MPa.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The polyamide composite material is characterized by comprising the following components in parts by weight:
35-80 parts of PA66 or PA 6;
5-30 parts of spherical boron nitride;
5-30 parts of acicular boron nitride.
2. Polyamide composite material according to claim 1, characterized in that the sphericity of the spherical boron nitride is 0.8-1, preferably 0.85-1.
3. Polyamide composite material according to claim 1, characterized in that the aspect ratio of the needle-like boron nitride is 3-10, preferably 4-8.
4. Polyamide composite material according to claim 1, characterized in that the weight ratio of spherical boron nitride to needle-like boron nitride is (0.3-2.5): 1, preferably (0.5-2): 1.
5. the polyamide composite material of claim 1 further comprising 0.2 to 0.3 parts by weight of an auxiliary agent.
6. Polyamide composite material according to claim 1, characterized in that the auxiliary agent is an antioxidant and/or a lubricant.
7. A method of producing a polyamide composite material according to any one of claims 1 to 6, comprising the steps of:
s1: weighing the components according to the proportion, and premixing to obtain a premix;
s2: and (3) putting the premix in the step (S1) into an extruder, carrying out melt blending, extruding and granulating to obtain the polyamide composite material.
8. The method according to claim 7, wherein the extruder is a twin-screw extruder, the length-diameter ratio of the screw of the twin-screw extruder is (40-48): 1, the barrel temperature of the twin-screw extruder is 200-275 ℃, and the screw rotation speed of the twin-screw extruder is 250-500rpm.
9. Use of the polyamide composite material according to any one of claims 1-6 for the manufacture of an electronic appliance.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310404226.7A CN116444983A (en) | 2023-04-17 | 2023-04-17 | Polyamide composite material and preparation method and application thereof |
| PCT/CN2024/088302 WO2024217454A1 (en) | 2023-04-17 | 2024-04-17 | Polyamide composite material, preparation method therefor and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310404226.7A CN116444983A (en) | 2023-04-17 | 2023-04-17 | Polyamide composite material and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116444983A true CN116444983A (en) | 2023-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310404226.7A Pending CN116444983A (en) | 2023-04-17 | 2023-04-17 | Polyamide composite material and preparation method and application thereof |
Country Status (2)
| Country | Link |
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| CN (1) | CN116444983A (en) |
| WO (1) | WO2024217454A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024217454A1 (en) * | 2023-04-17 | 2024-10-24 | 金发科技股份有限公司 | Polyamide composite material, preparation method therefor and use thereof |
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| KR102268805B1 (en) * | 2014-06-30 | 2021-06-25 | 우베 고산 가부시키가이샤 | Polyamide resin composition and molded article comprising same |
| CN104559145A (en) * | 2014-12-16 | 2015-04-29 | 惠州力王佐信科技有限公司 | High-toughness and high-thermal-conductivity polymer material and preparation method thereof |
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| CN116444983A (en) * | 2023-04-17 | 2023-07-18 | 金发科技股份有限公司 | Polyamide composite material and preparation method and application thereof |
-
2023
- 2023-04-17 CN CN202310404226.7A patent/CN116444983A/en active Pending
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- 2024-04-17 WO PCT/CN2024/088302 patent/WO2024217454A1/en unknown
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| CN102352110A (en) * | 2011-08-04 | 2012-02-15 | 烟台德邦电子材料有限公司 | Super flexible high-molecular heat conduction material and preparation method thereof |
| CN103044904A (en) * | 2012-12-27 | 2013-04-17 | 安徽科聚新材料有限公司 | Special heat-conducting and insulating material for LED (light-emitting diode) lamp holder and preparation method thereof |
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| CN106977908A (en) * | 2016-01-15 | 2017-07-25 | 株洲时代新材料科技股份有限公司 | A kind of shock resistance scratch-resistant Heat conduction nylon composite material and preparation method thereof |
| CN114426757A (en) * | 2022-01-20 | 2022-05-03 | 国网河北省电力有限公司电力科学研究院 | Resin material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024217454A1 (en) * | 2023-04-17 | 2024-10-24 | 金发科技股份有限公司 | Polyamide composite material, preparation method therefor and use thereof |
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| WO2024217454A1 (en) | 2024-10-24 |
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