CN114573982A - Automobile tie material modified based on regenerated PA66 airbag material and preparation method thereof - Google Patents
Automobile tie material modified based on regenerated PA66 airbag material and preparation method thereof Download PDFInfo
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- CN114573982A CN114573982A CN202210230809.8A CN202210230809A CN114573982A CN 114573982 A CN114573982 A CN 114573982A CN 202210230809 A CN202210230809 A CN 202210230809A CN 114573982 A CN114573982 A CN 114573982A
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- 239000000463 material Substances 0.000 title claims abstract description 145
- 229920002302 Nylon 6,6 Polymers 0.000 title claims abstract description 80
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 20
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 20
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003063 flame retardant Substances 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 14
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 14
- 150000002978 peroxides Chemical class 0.000 claims abstract description 13
- 239000004970 Chain extender Substances 0.000 claims abstract description 12
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 10
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 17
- 229920006026 co-polymeric resin Polymers 0.000 claims description 15
- YYXLGGIKSIZHSF-UHFFFAOYSA-N ethene;furan-2,5-dione Chemical group C=C.O=C1OC(=O)C=C1 YYXLGGIKSIZHSF-UHFFFAOYSA-N 0.000 claims description 15
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 15
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 14
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 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 claims description 6
- -1 diethyl hypophosphite Chemical compound 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- XZTOTRSSGPPNTB-UHFFFAOYSA-N phosphono dihydrogen phosphate;1,3,5-triazine-2,4,6-triamine Chemical compound NC1=NC(N)=NC(N)=N1.OP(O)(=O)OP(O)(O)=O XZTOTRSSGPPNTB-UHFFFAOYSA-N 0.000 claims description 3
- OXGOEZHUKDEEKS-UHFFFAOYSA-N 3-tert-butylperoxy-1,1,5-trimethylcyclohexane Chemical compound CC1CC(OOC(C)(C)C)CC(C)(C)C1 OXGOEZHUKDEEKS-UHFFFAOYSA-N 0.000 claims description 2
- 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 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 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 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 2
- CCNDOQHYOIISTA-UHFFFAOYSA-N 1,2-bis(2-tert-butylperoxypropan-2-yl)benzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC=C1C(C)(C)OOC(C)(C)C CCNDOQHYOIISTA-UHFFFAOYSA-N 0.000 claims 1
- 239000004677 Nylon Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 229920001778 nylon Polymers 0.000 abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000741 silica gel Substances 0.000 abstract description 3
- 229910002027 silica gel Inorganic materials 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 239000012459 cleaning agent Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 9
- 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 5
- 238000005452 bending Methods 0.000 description 5
- 239000008188 pellet Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- QIVUCLWGARAQIO-OLIXTKCUSA-N (3s)-n-[(3s,5s,6r)-6-methyl-2-oxo-1-(2,2,2-trifluoroethyl)-5-(2,3,6-trifluorophenyl)piperidin-3-yl]-2-oxospiro[1h-pyrrolo[2,3-b]pyridine-3,6'-5,7-dihydrocyclopenta[b]pyridine]-3'-carboxamide Chemical compound C1([C@H]2[C@H](N(C(=O)[C@@H](NC(=O)C=3C=C4C[C@]5(CC4=NC=3)C3=CC=CN=C3NC5=O)C2)CC(F)(F)F)C)=C(F)C=CC(F)=C1F QIVUCLWGARAQIO-OLIXTKCUSA-N 0.000 description 1
- AXWJKQDGIVWVEW-UHFFFAOYSA-N 2-(dimethylamino)butanedioic acid Chemical compound CN(C)C(C(O)=O)CC(O)=O AXWJKQDGIVWVEW-UHFFFAOYSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- KTLIMPGQZDZPSB-UHFFFAOYSA-N diethylphosphinic acid Chemical compound CCP(O)(=O)CC KTLIMPGQZDZPSB-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000002699 waste material Substances 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
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/28—Organic compounds containing halogen
- C11D7/30—Halogenated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3263—Amides or imides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention discloses an automobile tie material modified based on a regenerated PA66 airbag material and a preparation method thereof. An automobile cable tie material modified based on a regenerated PA66 airbag material comprises the following components in percentage by mass: 5-15% of EPDM elastomer, 3-8% of halogen-free flame retardant, 0.5-2% of peroxide crosslinking agent, 1-8% of chain extender, 0.5-3% of antioxidant, 0.5-3% of lubricant and the balance of cleaned PA66 air bag material, wherein the cleaned PA66 air bag material is prepared by the following steps: and sequentially adding the PA66 air bag material, dichloromethane, N-dimethylacetamide and water to form an air bag material cleaning system, and uniformly mixing the air bag material cleaning system for 5-20min to obtain the cleaned PA66 air bag material. The invention adopts dichloromethane and N, N-dimethylacetamide as silica gel cleaning agent to realize degumming effect; the molecular weight of the regenerated nylon cable tie is improved through the embrittlement reaction of the peroxide crosslinking agent, and the viscosity is improved, so that the toughening effect is improved.
Description
The technical field is as follows:
the invention belongs to the technical field of high polymer materials, and particularly relates to an automobile tie material modified based on a regenerated PA66 airbag material and a preparation method thereof.
Background art:
the recycling technology of the waste automobile air bag material in the market is immature, the main component of the automobile air bag material is PA66, and a small amount of silica gel in the automobile air bag material is difficult to remove, so that the recycling of the material is influenced, and the strength and the toughness of the material cannot be improved in modification application. There is a need to solve this problem.
The invention content is as follows:
the invention aims to overcome the defects of the prior art and provides an automobile cable tie material modified based on a regenerated PA66 airbag material and a preparation method thereof.
The invention aims to provide an automobile cable tie material modified based on a regenerated PA66 airbag material, which comprises the following components in percentage by mass: 5-15% of EPDM elastomer, 3-8% of halogen-free flame retardant, 0.5-2% of peroxide crosslinking agent, 1-8% of chain extender, 0.5-3% of antioxidant, 0.5-3% of lubricant and the balance of cleaned PA66 (nylon 66) airbag material, wherein the cleaned PA66 airbag material is prepared by the following steps: and sequentially adding the PA66 air bag material, dichloromethane, N-dimethylacetamide and water to form an air bag material cleaning system, and uniformly mixing the air bag material cleaning system for 5-20min to obtain the cleaned PA66 air bag material.
The invention improves the molecular weight and viscosity of the regenerated nylon cable tie by the peroxide cross-linking agent and the chain extender, thereby improving the toughening effect.
Preferably, the composition comprises the following components in parts by mass: 7-12% of EPDM elastomer, 3-8% of halogen-free flame retardant, 0.8-1.5% of peroxide crosslinking agent, 3-6% of chain extender, 1.0-2.5% of antioxidant, 1.0-2.8% of lubricant and the balance of cleaned PA66 air bag material.
Preferably, the airbag material cleaning system comprises, by mass, 5% -10% of dichloromethane, 5% -10% of N, N-dimethylacetamide, 10% -20% of water, and the balance of PA66 airbag material.
Preferably, the peroxide crosslinking agent is one or more selected from dicumyl peroxide, 1-bis (tert-butylperoxy) -3,3, 5-trimethylcyclohexane and bis (tert-butylperoxyisopropyl) benzene, and the chain extender is ethylene maleic anhydride syndiotactic copolymer resin.
Preferably, the halogen-free flame retardant is one or more selected from melamine cyanurate, melamine pyrophosphate and diethyl hypophosphite.
Preferably, the lubricant is one or more selected from ethylene bis stearamide, polyethylene wax and zinc stearate, and the antioxidant is more than one selected from antioxidant 1098, antioxidant 1010, antioxidant 168 and antioxidant 9228.
The invention also provides a preparation method of the automobile cable tie material modified based on the regenerated PA66 airbag material, which comprises the following steps: uniformly mixing the EPDM elastomer, the halogen-free flame retardant, the peroxide cross-linking agent, the chain extender, the antioxidant, the lubricant and the cleaned PA66 airbag material, adding the mixture into a double-screw extruder, melting and extruding the mixture, cooling the mixture by water, and then cutting the mixture into particles to obtain the automobile ribbon material modified by the regenerated PA66 airbag material. The grain diameter of the cut grains is 3-4 mm.
Preferably, the process parameters of the twin-screw extruder are: the temperature of the first zone is 260-300 ℃, the temperature of the second zone is 260-300 ℃, the temperature of the third zone is 260-300 ℃, the temperature of the fourth zone is 260-300 ℃, the temperature of the fifth zone is 260-300 ℃, the temperature of the sixth zone is 260-300 ℃, the temperature of the seventh zone is 260-300 ℃, the temperature of the eighth zone is 260-300 ℃, the temperature of the ninth zone is 260-300 ℃, the temperature of the die head is 250-280 ℃, the pressure is 20-25MPa, and the rotation speed of the screw is 450-500 r/min.
The invention has the beneficial effects that:
1. the invention adopts dichloromethane and N, N-dimethylacetamide as silica gel cleaning agent to realize degumming effect; the molecular weight of the regenerated nylon cable tie is improved through the embrittlement reaction of the peroxide crosslinking agent, and meanwhile, the halogen-free flame retardant, the crosslinking agent and the chain extender act together, so that the flame retardant can also serve as an inorganic reinforcing modifier, and the tensile strength and the bending strength of the material are improved.
2. The automobile ribbon material is prepared by adopting the integrated processes of hot melting, extrusion, cooling and grain cutting, and the preparation steps are simple to operate and stable in quality.
The specific implementation mode is as follows:
the following examples are further illustrative of the present invention and are not intended to be limiting thereof.
Unless otherwise specified, the devices and materials mentioned in the present invention are commercially available.
Example 1
The washed PA66 airbag material is obtained by the following steps: 70 kg of PA66 air bag material, 7.5 kg of dichloromethane, 7.5 kg of N, N-dimethylacetamide and 15 kg of water are sequentially added to form an air bag material cleaning system, and the air bag material cleaning system is uniformly mixed for 10min to obtain the cleaned PA66 air bag material.
An automobile cable tie material modified based on a regenerated PA66 airbag material comprises the following components in percentage by mass: 10% of EPDM elastomer, 5% of melamine cyanurate, 1% of dicumyl peroxide, 4.5% of ethylene maleic anhydride syndiotactic copolymer resin, 10981.5% of antioxidant and 1.5% of ethylene bis stearamide, wherein the cleaned PA66 air bag material is 76.5%.
The preparation method of the automobile cable tie material modified based on the regenerated PA66 airbag material comprises the steps of uniformly mixing the EPDM elastomer, the melamine cyanurate, the dicumyl peroxide, the ethylene maleic anhydride syndiotactic copolymer resin, the antioxidant 1098, the ethylene bis-stearamide and the cleaned PA66 airbag material according to the formula ratio, adding the mixture into a double-screw extruder, melting and extruding the mixture, cooling with water, and granulating to obtain the automobile cable tie material modified based on the regenerated PA66 airbag material. The grain diameter of the cut pellets is 3-4 mm.
The technological parameters of the double-screw extruder are as follows: the first zone temperature is 280 ℃, the second zone temperature is 280 ℃, the third zone temperature is 280 ℃, the fourth zone temperature is 280 ℃, the fifth zone temperature is 280 ℃, the sixth zone temperature is 280 ℃, the seventh zone temperature is 280 ℃, the eighth zone temperature is 280 ℃, the ninth zone temperature is 280 ℃, the die head temperature is 270 ℃, the pressure is 22MPa, and the screw rotating speed is 480 r/min.
Comparative example 1
The automobile cable tie material modified based on the regenerated PA66 airbag material comprises the following components in percentage by mass: 10% of EPDM elastomer, 5% of melamine cyanurate, 1% of dicumyl peroxide, 4.5% of ethylene maleic anhydride syndiotactic copolymer resin, 10981.5% of antioxidant, 1.5% of ethylene bis stearamide and 76.5% of the unwashed PA66 airbag material.
The preparation method of the automobile cable tie material modified based on the regenerated PA66 airbag material comprises the steps of uniformly mixing the EPDM elastomer, dicumyl peroxide, ethylene maleic anhydride syndiotactic copolymer resin, the antioxidant 1098, ethylene bis-stearamide and the cleaned PA66 airbag material according to the formula ratio, adding the mixture into a double-screw extruder, melting and extruding the mixture, cooling with water and granulating to obtain the automobile cable tie material modified based on the regenerated PA66 airbag material. The grain diameter of the cut pellets is 3-4 mm.
The technological parameters of the double-screw extruder are as follows: the first zone temperature is 280 ℃, the second zone temperature is 280 ℃, the third zone temperature is 280 ℃, the fourth zone temperature is 280 ℃, the fifth zone temperature is 280 ℃, the sixth zone temperature is 280 ℃, the seventh zone temperature is 280 ℃, the eighth zone temperature is 280 ℃, the ninth zone temperature is 280 ℃, the die head temperature is 270 ℃, the pressure is 22MPa, and the screw rotating speed is 480 r/min.
Comparative example 2
The same as example 1, except that:
a modified automobile tie material based on a regenerated PA66 airbag material comprises the following components: 1% of dicumyl peroxide, 5% of melamine cyanurate, 4.5% of ethylene maleic anhydride syndiotactic copolymer resin, 10981.5% of antioxidant, 1.5% of ethylene bis stearamide and 86.5% of the cleaned PA66 air bag material.
Comparative example 3
The same as example 1, except that:
an automobile cable tie material modified based on a regenerated PA66 airbag material comprises the following components: 10% of EPDM elastomer, 5% of melamine cyanurate, 4.5% of ethylene maleic anhydride syndiotactic copolymer resin, 10981.5% of antioxidant and 1.5% of ethylene bis stearamide, and 77.5% of the cleaned PA66 air bag material.
Comparative example 4
The automobile cable tie material modified based on the regenerated PA66 airbag material comprises the following components in percentage by mass: 10% of EPDM elastomer, 1% of dicumyl peroxide, 4.5% of ethylene maleic anhydride syndiotactic copolymer resin, 10981.5% of antioxidant, 1.5% of ethylene bis stearamide and 81.5% of the cleaned PA66 air bag material.
The modified materials obtained in example 1 and comparative examples 1 to 4 were subjected to performance tests, and the results are shown in table 1.
TABLE 1
| Test item | Unit of | Example 1 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example4 |
| Density of | g/cm3 | 1.05 | 1.05 | 1.1 | 1.05 | 1.03 |
| Impact Strength (notched) | KJ/m2 | 70 | 6 | 35 | 9 | 71 |
| Impact Strength (unnotched) | KJ/m2 | Continuously, continuously | 30 | 78 | 39 | Continuously, continuously |
| Tensile strength | Mpa | 55 | 40 | 54 | 45 | 52 |
| Elongation percentage | ％ | 35 | 10 | 20 | 13 | 38 |
| Bending strength | Mpa | 68 | 50 | 66 | 56 | 64 |
| Flexural modulus | Mpa | 1680 | 1500 | 1630 | 1560 | 1605 |
| Water absorption rate | ％ | 0.5％ | 0.8％ | 1％ | 0.7％ | 0.9 |
| Flame retardancy UL94 | / | V2 | HB | HB | HB | HB |
As shown in Table 1, the toughening effect of the nylon material is remarkably improved, the water absorption of the material can be reduced, and the flame retardant property, the tensile strength and the bending strength of the material can be improved by compounding the nylon material with the flame retardant.
Example 2
An automobile cable tie material modified based on a regenerated PA66 airbag material comprises the following components in percentage by mass: EPDM elastomer 7%, melamine pyrophosphate 3%, dicumyl peroxide 0.8%, ethylene maleic anhydride syndiotactic copolymer resin 3%, antioxidant 10981.0%, ethylene bis stearamide 1.0%, and the cleaned PA66 balloon material obtained in example 1 was 84.2%.
The preparation method is the same as in example 1.
Example 3
An automobile cable tie material modified based on a regenerated PA66 airbag material comprises the following components in percentage by mass: 12% of EPDM elastomer, 8% of diethylhypophosphite, 1.5% of dicumyl peroxide, 6% of ethylene maleic anhydride syndiotactic copolymer resin, 10982.5% of antioxidant, 2.8% of ethylene bis-stearamide and 74.6% of the cleaned PA66 airbag material obtained in example 1.
The preparation method is the same as that of example 1.
Example 4
The washed PA66 airbag material is obtained by the following steps: and sequentially adding 80 kg of PA66 air bag material, 5 kg of dichloromethane, 5 kg of N, N-dimethylacetamide and 10 kg of water to form an air bag material cleaning system, and uniformly mixing the air bag material cleaning system for 5min to obtain the cleaned PA66 air bag material.
An automobile cable tie material modified based on a regenerated PA66 airbag material comprises the following components in percentage by mass: 5% of EPDM elastomer, 5% of melamine cyanurate, 2% of dicumyl peroxide, 1% of ethylene maleic anhydride syndiotactic copolymer resin, 10980.5% of antioxidant, 3% of ethylene bis-stearamide and 83.5% of cleaned PA66 air bag material.
The preparation method of the modified automobile ribbon material based on the regenerated PA66 airbag material comprises the steps of uniformly mixing the EPDM elastomer, melamine cyanurate, dicumyl peroxide, ethylene maleic anhydride syndiotactic copolymer resin, antioxidant 1098, ethylene bis stearamide and the cleaned PA66 airbag material according to the formula ratio, adding the mixture into a double-screw extruder, melting and extruding the mixture, cooling with water, and granulating to obtain the modified automobile ribbon material based on the regenerated PA66 airbag material. The grain diameter of the cut pellets is 3-4 mm.
The technological parameters of the double-screw extruder are as follows: the temperature of the first zone is 260 ℃, the temperature of the second zone is 260 ℃, the temperature of the third zone is 260 ℃, the temperature of the fourth zone is 260 ℃, the temperature of the fifth zone is 260 ℃, the temperature of the sixth zone is 260 ℃, the temperature of the seventh zone is 260 ℃, the temperature of the eighth zone is 260 ℃, the temperature of the ninth zone is 260 ℃, the temperature of the die head is 250 ℃, the pressure is 20MPa, and the rotating speed of the screw is 450 r/min.
Example 5
The washed PA66 airbag material is obtained by the following steps: 60 kg of PA66 air bag material, 10 kg of dichloromethane, 10 kg of N, N-dimethylacetamide and 20 kg of water are sequentially added to form an air bag material cleaning system, and the air bag material cleaning system is uniformly mixed for 5min to obtain the cleaned PA66 air bag material.
An automobile cable tie material modified based on a regenerated PA66 airbag material comprises the following components in percentage by mass: 15% of EPDM elastomer, 5% of melamine cyanurate, 0.5% of dicumyl peroxide, 8% of ethylene maleic anhydride syndiotactic copolymer resin, 10983% of antioxidant, 0.5% of ethylene bis stearamide and 68% of cleaned PA66 air bag material.
The preparation method of the automobile cable tie material modified based on the regenerated PA66 airbag material comprises the steps of uniformly mixing the EPDM elastomer, the melamine cyanurate, the dicumyl peroxide, the ethylene maleic anhydride syndiotactic copolymer resin, the antioxidant 1098, the ethylene bis-stearamide and the cleaned PA66 airbag material according to the formula ratio, adding the mixture into a double-screw extruder, melting and extruding the mixture, cooling with water, and granulating to obtain the automobile cable tie material modified based on the regenerated PA66 airbag material. The grain diameter of the cut pellets is 3-4 mm.
The technological parameters of the double-screw extruder are as follows: the temperature of the first zone is 300 ℃, the temperature of the second zone is 300 ℃, the temperature of the third zone is 300 ℃, the temperature of the fourth zone is 300 ℃, the temperature of the fifth zone is 300 ℃, the temperature of the sixth zone is 300 ℃, the temperature of the seventh zone is 300 ℃, the temperature of the eighth zone is 300 ℃, the temperature of the ninth zone is 300 ℃, the temperature of the die head is 280 ℃, the pressure is 25MPa, and the rotating speed of the screw is 500 r/min.
The modified materials obtained in examples 1 to 5 were subjected to performance tests, and the test data are shown in Table 2.
TABLE 2
| Test items | Unit of | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Density of | g/cm3 | 1.05 | 1.05 | 1.04 | 1.06 | 1.04 |
| Impact Strength (notched) | KJ/m2 | 70 | 65 | 69 | 60 | 68 |
| Impact Strength (unnotched) | KJ/m2 | Continuously, continuously | 105 | Without interruption of the flow | 95 | Continuously, continuously |
| Tensile strength | Mpa | 55 | 52 | 49 | 53 | 45 |
| Elongation percentage of the polymer | ％ | 35 | 31 | 36 | 29 | 35 |
| Bending strength | Mpa | 68 | 65 | 61 | 67 | 57 |
| Flexural modulus | Mpa | 1680 | 1580 | 1530 | 1620 | 1340 |
| Water absorption rate | ％ | 0.5％ | 0.5％ | 0.5％ | 0.5％ | 0.5％ |
| Flame retardancy UL94 | / | V2 | V2 | V2 | V2 | V2 |
The table 2 shows that the EPDM elastomer, the peroxide crosslinking agent and the chain extender have a synergistic effect on the PA66 airbag material, the tensile property, the bending property and the impact property of the material are improved to a great extent, and the addition of the compound flame retardant has a beneficial effect on the flame retardant property of the material.
The above-mentioned embodiments are only used to help understanding the technical solution and the core idea of the present invention, and it should be noted that, for those skilled in the art, the present invention may be modified and modified without departing from the principle of the present invention, and the modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. An automobile cable tie material modified based on a regenerated PA66 airbag material is characterized by comprising the following components in percentage by mass: 5-15% of EPDM elastomer, 3-8% of halogen-free flame retardant, 0.5-2% of peroxide crosslinking agent, 1-8% of chain extender, 0.5-3% of antioxidant, 0.5-3% of lubricant and the balance of cleaned PA66 air bag material, wherein the cleaned PA66 air bag material is prepared by the following steps: and sequentially adding the PA66 air bag material, dichloromethane, N-dimethylacetamide and water to form an air bag material cleaning system, and uniformly mixing the air bag material cleaning system for 5-20min to obtain the cleaned PA66 air bag material.
2. The automobile tie material modified based on the regenerated PA66 airbag material is characterized by comprising the following components in parts by mass: 7-12% of EPDM elastomer, 3-8% of halogen-free flame retardant, 0.8-1.5% of peroxide crosslinking agent, 3-6% of chain extender, 1.0-2.5% of antioxidant, 1.0-2.8% of lubricant and the balance of cleaned PA66 air bag material.
3. The automobile tie material modified based on the regenerated PA66 airbag material is characterized in that the airbag material cleaning system comprises, by mass, 5% -10% of dichloromethane, 5% -10% of N, N-dimethylacetamide, 10% -20% of water, and the balance of PA66 airbag material.
4. The modified automobile cable tie material based on the regenerated PA66 airbag material as claimed in claim 1 or 2, wherein the peroxide crosslinking agent is one or more selected from dicumyl peroxide, 1-bis (t-butylperoxy) -3,3, 5-trimethylcyclohexane and bis (t-butylperoxyisopropyl) benzene.
5. The modified automobile tie material based on the regenerated PA66 airbag material as claimed in claim 1 or 2, wherein the halogen-free flame retardant is one or more selected from melamine cyanurate, melamine pyrophosphate and diethyl hypophosphite.
6. The modified automobile cable tie material based on the regenerated PA66 airbag material as claimed in claim 1 or 2, wherein the chain extender is an ethylene maleic anhydride syndiotactic copolymer resin.
7. The modified automobile tie material based on the regenerated PA66 airbag material as claimed in claim 1 or 2, wherein the lubricant is one or more selected from ethylene bis stearamide, polyethylene wax and zinc stearate.
8. The modified automobile tie material based on the recycled PA66 airbag material as claimed in claim 1 or 2, wherein the antioxidant is selected from more than one of antioxidant 1098, antioxidant 1010, antioxidant 168 and antioxidant 9228.
9. The preparation method of the automobile cable tie material modified based on the regenerated PA66 airbag material is characterized by comprising the following steps: uniformly mixing the EPDM elastomer, the halogen-free flame retardant, the peroxide cross-linking agent, the chain extender, the antioxidant, the lubricant and the cleaned PA66 airbag material, adding the mixture into a double-screw extruder, melting and extruding the mixture, cooling the mixture by water, and then cutting the mixture into particles to obtain the automobile ribbon material modified by the regenerated PA66 airbag material.
10. The preparation method of the automobile cable tie material modified based on the regenerated PA66 airbag material is characterized in that the technological parameters of a double-screw extruder are as follows: the temperature of the first zone is 260-300 ℃, the temperature of the second zone is 260-300 ℃, the temperature of the third zone is 260-300 ℃, the temperature of the fourth zone is 260-300 ℃, the temperature of the fifth zone is 260-300 ℃, the temperature of the sixth zone is 260-300 ℃, the temperature of the seventh zone is 260-300 ℃, the temperature of the eighth zone is 260-300 ℃, the temperature of the ninth zone is 260-300 ℃, the temperature of the die head is 250-280 ℃, the pressure is 20-25MPa, and the rotation speed of the screw is 450-500 r/min.
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