CN113502047A - Carbon fiber reinforced TPU material and preparation method thereof - Google Patents
Carbon fiber reinforced TPU material and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 46
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 40
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 40
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 11
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 11
- 239000000314 lubricant Substances 0.000 claims abstract description 11
- 230000008595 infiltration Effects 0.000 claims abstract description 7
- 238000001764 infiltration Methods 0.000 claims abstract description 7
- 230000007704 transition Effects 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 6
- -1 3, 5-di-tert-butyl-4-hydroxyphenyl Chemical group 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- 229920000570 polyether Polymers 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 2
- 238000007605 air drying Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 238000007791 dehumidification Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 2
- 229910052799 carbon Inorganic materials 0.000 claims 2
- 239000000835 fiber Substances 0.000 claims 2
- 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 claims 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims 1
- 239000000454 talc Substances 0.000 claims 1
- 229910052623 talc Inorganic materials 0.000 claims 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 claims 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 29
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 29
- 238000002791 soaking Methods 0.000 description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000003365 glass fiber Substances 0.000 description 3
- WPMYUUITDBHVQZ-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoic acid Chemical compound CC(C)(C)C1=CC(CCC(O)=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-N 0.000 description 2
- 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 description 2
- 230000008676 import Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- 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
- C08K7/06—Elements
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (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 carbon fiber reinforced TPU material and a preparation method thereof. The carbon fiber reinforced TPU material comprises the following components in percentage by mass: 40-60% of TPU resin, 5-10% of compatilizer, 0.3-0.5% of antioxidant, 0.3-0.5% of lubricant and 30-50% of carbon fiber. According to the invention, the mechanical property of the TPU is greatly improved by adding the carbon fiber through the infiltration coating process, the market blank is filled, the application field of the carbon fiber reinforced TPU is widened, and the carbon fiber reinforced TPU is widely applied to the fields of electric tools, automobiles, war industry, aerospace and the like.
Description
Technical Field
The invention belongs to the field of TPU materials, and particularly relates to a carbon fiber reinforced TPU material and a preparation method thereof.
Background
Thermoplastic polyurethane elastomers (TPU) are one of the fastest growing thermoplastic materials internationally today, the main varieties being polyether and polyester. The hard segment is formed by isocyanate, the soft segment is formed by polyol, and the structure exists on the same chain, so that the material has rigidity and toughness. The structural characteristics of the TPU enable the TPU to have excellent wear resistance, elasticity, strength and wide hardness range, and be widely applied.
However, the demand of China on TPU mainly depends on import, particularly, modified products almost completely depend on import, and carbon fiber reinforced TPU is one of the products.
The mechanical property of the carbon fiber reinforced TPU material is greatly improved, and meanwhile, the carbon fiber reinforced TPU material has excellent comprehensive performance due to the excellent wear-resistant and oil-resistant performances of the TPU material. The method is widely applied to the fields of electric tools, automobiles, war industry, aerospace and the like.
At present, the research on carbon fiber reinforced TPU materials in China is still in the initial stage, and the market is almost blank.
Disclosure of Invention
The invention provides a carbon fiber reinforced TPU material, and further provides a preparation method of the material, wherein the scheme is as follows:
a carbon fiber reinforced TPU material comprises the following components in percentage by mass:
further, the TPU resin is polyether type, the melt index is 40-60g/10min (250 ℃/2.16 kg), and the Shore hardness is 70-85D.
Further, the compatilizer is GMA-g-POE, preferably glycidyl methacrylate grafted ethylene-octene copolymer with GMA mass grafting rate of 2-3% and melt index of 3-10g/10min (190 ℃, 2.16 kg).
The antioxidant is at least one of diethylene glycol bis [ beta- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate, N' -bis- (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexanediamine and tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.
Further, the lubricant is at least one of talcum powder, calcium carbonate and silicone powder.
Furthermore, the carbon fiber is continuous long carbon fiber with the diameter of 5-7 um.
A carbon fiber reinforced TPU material and a preparation method thereof comprise the following steps:
s1, preparing a backing material according to the proportion except the carbon fibers, sequentially putting the TPU resin, the compatilizer, the antioxidant and the lubricant into a mixer, uniformly mixing, heating to 60 ℃, and then preserving heat for 10 minutes to obtain a premix;
s2, adding the premix obtained in the step S1 into a feed hopper of a double-screw extruder, and adding carbon fibers at a side feed inlet; the carbon fiber material passes through the infiltration mould and is infiltrated and coated by the molten mixture in the infiltration mould; the mixed material continues to move forward under the action of tension, enters a tractor and a granulator after being subjected to water cooling, dehumidification and air drying, and is granulated by the granulator to obtain a granular product; the double-screw extruder is divided into nine zones from a feeding port to a machine head, a start valve, a transition pipe, an inner side plate, a rear plate, an outer plate, an upper die, a lower die, a die orifice 1 and a die orifice 2, wherein the temperatures of the first zone to the ninth zone are respectively 200-205 ℃, 210-215 ℃, 220-225 ℃, 230-235 ℃, 240-245 ℃, 250-255 ℃, 260 ℃ of the start valve, 260 ℃ of the transition pipe, 285 ℃ of the inner side plate, 290-300 ℃ of the rear plate, 260-270 ℃ of the outer plate, 260 ℃ of the upper die, 260 ℃ of the lower die, 260 ℃ of the die orifice 1, 260 ℃ of the die orifice 2, 300-350 r/min of a screw rod, 49.5kg/h of feeding amount, 14.5HZ of a granulator and 14m/min of traction linear velocity.
The invention has the beneficial effects that:
the carbon fiber reinforced TPU material prepared by the invention fills up the market blank of carbon fiber reinforced TPU in China, has the performances of higher strength, lower density, low warpage, low shrinkage and the like, is easy to mold and process, has a simple manufacturing process, and has a wide application range and market.
Detailed Description
The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
A carbon fiber reinforced TPU material comprises the following components in percentage by mass:
the TPU resin is polyether, the melt index is 40-60g/10min (250 ℃/2.16 kg), and the Shore hardness is 70-85D.
The compatibilizer is GMA-g-POE, preferably glycidyl methacrylate grafted ethylene-octene copolymer with GMA mass grafting rate of 2-3% and melt index of 3-10g/10min (190 ℃, 2.16 kg).
The antioxidant is at least one of diethylene glycol bis [ beta- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate ], N' -bis- (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexanediamine and tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.
The lubricant is at least one of talcum powder, calcium carbonate and silicone powder.
The carbon fiber is continuous long carbon fiber with the diameter of 5-7 um.
Example 1
The composition comprises the following components in percentage by mass: 50kg of TPU resin, 5kg of compatilizer, 0.3kg of antioxidant and 0.3kg of lubricant are uniformly mixed and then are added into a feeding hopper of a double-screw extruder, and simultaneously 40kg of carbon fiber material passes through a soaking mould and is soaked and wrapped by a molten mixture in the soaking mould; the mixed material continues to move forward under the action of tension, and enters a tractor and a granulator after being cooled, dehumidified and air-dried, and granular products are obtained after being granulated by the granulator; the double-screw extruder is divided into nine zones from a feeding port to a die orifice, a start valve, a transition pipe, an inner side plate, a back plate, an outer plate, an upper die, a lower die, a die orifice 1 and a die orifice 2, wherein the temperatures of the first zone to the ninth zone are respectively 200-205 ℃, 210-215 ℃, 220-225 ℃, 230-235 ℃, 240-245 ℃, 250-255 ℃, the temperature of the start valve is 260 ℃, the temperature of the transition pipe is 260 ℃, the temperature of the inner side plate is 285 ℃, the temperature of the back plate is 290-300 ℃, the temperature of the outer plate is 260-270 ℃, the temperature of the upper die is 260 ℃, the temperature of the lower die is 260 ℃, the temperature of the die orifice 1 is 260 ℃, the temperature of the die orifice 2 is 260 ℃, the rotating speed of a screw is 300-350 r/min, the feeding amount is 49.5kg/h, the speed of a granulator is 14.5HZ, and the traction linear velocity is 14 m/min.
Example 2
The composition comprises the following components in percentage by mass: 50kg of TPU resin, 5kg of compatilizer, 0.5kg of antioxidant and 0.5kg of lubricant are uniformly mixed and then are added into a feeding hopper of a double-screw extruder, and simultaneously 40kg of carbon fiber material passes through a soaking mould and is soaked and wrapped by a molten mixture in the soaking mould; the mixed material continues to move forward under the action of tension, and enters a tractor and a granulator after being cooled, dehumidified and air-dried, and granular products are obtained after being granulated by the granulator; the double-screw extruder is divided into nine zones from a feeding port to a die orifice, a start valve, a transition pipe, an inner side plate, a back plate, an outer plate, an upper die, a lower die, a die orifice 1 and a die orifice 2, wherein the temperatures of the first zone to the ninth zone are respectively 200-205 ℃, 210-215 ℃, 220-225 ℃, 230-235 ℃, 240-245 ℃, 250-255 ℃, the temperature of the start valve is 260 ℃, the temperature of the transition pipe is 260 ℃, the temperature of the inner side plate is 285 ℃, the temperature of the back plate is 290-300 ℃, the temperature of the outer plate is 260-270 ℃, the temperature of the upper die is 260 ℃, the temperature of the lower die is 260 ℃, the temperature of the die orifice 1 is 260 ℃, the temperature of the die orifice 2 is 260 ℃, the rotating speed of a screw is 300-350 r/min, the feeding amount is 49.5kg/h, the speed of a granulator is 14.5HZ, and the traction linear velocity is 14 m/min.
Example 3
The composition comprises the following components in percentage by mass: 50kg of TPU resin, 10kg of compatilizer, 0.5kg of antioxidant and 0.5kg of lubricant, uniformly mixing, adding into a hopper of a double-screw extruder, and simultaneously penetrating 40kg of glass fiber material from a soaking mould and soaking and wrapping the molten mixture in the soaking mould; the mixed material continues to move forward under the action of tension, and enters a tractor and a granulator after being cooled, dehumidified and air-dried, and granular products are obtained after being granulated by the granulator; the double-screw extruder is divided into nine zones from a feeding port to a die orifice, a start valve, a transition pipe, an inner side plate, a back plate, an outer plate, an upper die, a lower die, a die orifice 1 and a die orifice 2, wherein the temperatures of the first zone to the ninth zone are respectively 200-205 ℃, 210-215 ℃, 220-225 ℃, 230-235 ℃, 240-245 ℃, 250-255 ℃, the temperature of the start valve is 260 ℃, the temperature of the transition pipe is 260 ℃, the temperature of the inner side plate is 285 ℃, the temperature of the back plate is 290-300 ℃, the temperature of the outer plate is 260-270 ℃, the temperature of the upper die is 260 ℃, the temperature of the lower die is 260 ℃, the temperature of the die orifice 1 is 260 ℃, the temperature of the die orifice 2 is 260 ℃, the rotating speed of a screw is 300-350 r/min, the feeding amount is 49.5kg/h, the speed of a granulator is 14.5HZ, and the traction linear velocity is 14 m/min.
Comparative example 1
The composition comprises the following components in percentage by mass: 50kg of TPU resin, 5kg of compatilizer, 0.5kg of antioxidant and 0.5kg of lubricant are uniformly mixed and then are added into a feeding hopper of a double-screw extruder, and simultaneously 40kg of glass fiber material passes through a soaking mould and is soaked and wrapped by a molten mixture in the soaking mould; the mixed material continues to move forward under the action of tension, and enters a tractor and a granulator after being cooled, dehumidified and air-dried, and granular products are obtained after being granulated by the granulator; the double-screw extruder is divided into nine zones from a feeding port to a die orifice, a start valve, a transition pipe, an inner side plate, a back plate, an outer plate, an upper die, a lower die, a die orifice 1 and a die orifice 2, wherein the temperatures of the first zone to the ninth zone are respectively 200-205 ℃, 210-215 ℃, 220-225 ℃, 230-235 ℃, 240-245 ℃, 250-255 ℃, the temperature of the start valve is 260 ℃, the temperature of the transition pipe is 260 ℃, the temperature of the inner side plate is 285 ℃, the temperature of the back plate is 290-300 ℃, the temperature of the outer plate is 260-270 ℃, the temperature of the upper die is 260 ℃, the temperature of the lower die is 260 ℃, the temperature of the die orifice 1 is 260 ℃, the temperature of the die orifice 2 is 260 ℃, the rotating speed of a screw is 300-350 r/min, the feeding amount is 49.5kg/h, the speed of a granulator is 14.5HZ, and the traction linear velocity is 14 m/min.
Comparative example 2
The composition comprises the following components in percentage by mass: 50kg of PA66 resin, 5kg of compatilizer, 0.5kg of antioxidant and 0.5kg of lubricant are uniformly mixed and then are added into a feed hopper of a double-screw extruder, and simultaneously 40kg of carbon fiber material passes through an infiltration mould and is infiltrated and wrapped by a molten mixture in the infiltration mould; the mixed material continues to move forward under the action of tension, and enters a tractor and a granulator after being cooled, dehumidified and air-dried, and granular products are obtained after being granulated by the granulator; the double-screw extruder is divided into nine zones from a feeding port to a die orifice, a start valve, a transition pipe, an inner side plate, a back plate, an outer plate, an upper die, a lower die, a die orifice 1 and a die orifice 2, wherein the temperatures of the first zone to the ninth zone are 260-265 ℃, 270-275 ℃, 280-285 ℃, 285-290 ℃, 290-295 ℃, 300-305 ℃, 300 ℃ of the start valve, 300 ℃ of the transition pipe, 310 ℃ of the inner side plate, 300-310 ℃ of the back plate, 310-315 ℃ of the outer plate, 310 ℃ of the upper die, 310 ℃ of the lower die, 300 ℃ of the die orifice 1, 300 ℃ of the die orifice 2, 300-350 r/min of a screw rod, 49.5kg/h of feeding amount, 14.5HZ of a granulator and 14m/min of traction linear velocity.
The TPU materials prepared in the examples 1-3, the TPU material prepared in the comparative example 1 and the PA66 material prepared in the comparative example 2 are subjected to injection molding by an injection molding machine to form a standard pattern, and the standard pattern is compared according to national and international standards to carry out mechanical property and density characterization.
Table 1 performance test data for each of examples 1-3 and comparative examples 1-2:
as can be seen from Table 1, the material obtained by the technical scheme of the invention has excellent strength and rigidity and lower density, 3 examples of the material show that the effect of the embodiment 2 is the best through force comparison, and compared with the glass fiber reinforced TPU material, the strength is greatly improved, the impact performance is reduced to a smaller extent and is within an acceptable range. Compared with carbon fiber reinforced PA66, the PA66 is replaced under the condition of lower temperature requirement. The invention can be widely used in the fields of electric tools, automobile industry, household appliances, engineering machinery, ships, buildings and the like.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, and all technical solutions belonging to the principle of the present invention belong to the protection scope of the present invention. Modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
Claims (7)
1. The carbon fiber reinforced TPU material is characterized by comprising the following components in percentage by mass:
2. the carbon fiber reinforced TPU material of claim 1, wherein the TPU resin is a polyether TPU resin having a melt index of 40-60g/10min (250 ℃/2.16 kg) and a Shore hardness of 70-85D.
3. A carbon fibre reinforced TPU material as claimed in claim 1 where the compatibilizer is GMA-g-POE, preferably a glycidyl methacrylate grafted ethylene-octene copolymer with GMA mass graft ratio of 2-3% and melt index of 3-10g/10min (190 ℃, 2.16 kg).
4. The carbon fiber reinforced TPU material of claim 1, wherein the antioxidant is at least one of triethylene glycol bis [ β - (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate, N' -bis- (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexanediamine, and pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
5. A carbon fibre reinforced TPU material as set forth in claim 1 wherein said lubricant is at least one of talc, calcium carbonate, and silicone powder.
6. A carbon fiber reinforced TPU material as set forth in claim 1 wherein said carbon fibers are continuous length carbon fibers having a diameter of 5-7 um.
7. A process for preparing a carbon fiber reinforced TPU material as set forth in claim 1 including the steps of:
s1, preparing a base material according to the proportion except the carbon fiber, putting the TPU resin, the compatilizer, the antioxidant and the lubricant into a mixer, uniformly mixing, heating to 60 ℃, and then preserving heat for 10 minutes to obtain a premix;
s2, adding the premix obtained in the step S1 into a feed hopper of a double-screw extruder, and adding carbon fibers at a side feed inlet; the carbon fiber material passes through the infiltration mould and is infiltrated and coated by the molten mixture in the infiltration mould; the mixed material continues to move forward under the action of tension, enters a tractor and a granulator after being subjected to water cooling, dehumidification and air drying, and is granulated by the granulator to obtain a granular product; the double-screw extruder is divided into nine zones from a feeding port to a machine head, a start valve, a transition pipe, an inner side plate, a rear plate, an outer plate, an upper die, a lower die, a die orifice 1 and a die orifice 2, wherein the temperatures of the first zone to the ninth zone are respectively 200-205 ℃, 210-215 ℃, 220-225 ℃, 230-235 ℃, 240-245 ℃, 250-255 ℃ and 250-255 ℃, the temperature of the start valve is 260 ℃, the temperature of the transition pipe is 260 ℃, the temperature of the inner side plate is 285 ℃, the temperature of the rear plate is 290-300 ℃, the temperature of the outer plate is 260-270 ℃, the temperature of the upper die is 260 ℃, the temperature of the lower die is 260 ℃, the temperature of the die orifice 1 is 260 ℃, the temperature of the die orifice 2 is 260 ℃, the rotating speed of a screw is 300-350 r/min, the feeding amount is 49.5kg/h, the speed of a granulator is 14.5HZ, and the traction linear velocity is 14 m/min.
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| CN202110949464.7A CN113502047A (en) | 2021-08-18 | 2021-08-18 | Carbon fiber reinforced TPU material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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