WO2023045844A1 - 一种尼龙66材料及其制备方法 - Google Patents
一种尼龙66材料及其制备方法 Download PDFInfo
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- WO2023045844A1 WO2023045844A1 PCT/CN2022/119286 CN2022119286W WO2023045844A1 WO 2023045844 A1 WO2023045844 A1 WO 2023045844A1 CN 2022119286 W CN2022119286 W CN 2022119286W WO 2023045844 A1 WO2023045844 A1 WO 2023045844A1
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- Prior art keywords
- nylon
- flash
- antioxidant
- inhibitor
- lubricant
- Prior art date
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- 229920002302 Nylon 6,6 Polymers 0.000 title claims abstract description 215
- 239000000463 material Substances 0.000 title claims abstract description 93
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000003112 inhibitor Substances 0.000 claims abstract description 100
- 239000003365 glass fiber Substances 0.000 claims abstract description 75
- 239000000314 lubricant Substances 0.000 claims abstract description 65
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 62
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 59
- 239000004760 aramid Substances 0.000 claims abstract description 24
- 229920003235 aromatic polyamide Polymers 0.000 claims abstract description 24
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 94
- 229920006139 poly(hexamethylene adipamide-co-hexamethylene terephthalamide) Polymers 0.000 claims description 42
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 36
- 239000002667 nucleating agent Substances 0.000 claims description 13
- -1 calcium carboxylate Chemical class 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 6
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 6
- 229920006117 poly(hexamethylene terephthalamide)-co- polycaprolactam Polymers 0.000 claims description 6
- 229920006131 poly(hexamethylene isophthalamide-co-terephthalamide) Polymers 0.000 claims description 5
- 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 4
- 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 4
- 239000004952 Polyamide Substances 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 4
- 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 4
- TXQVDVNAKHFQPP-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(CO)CO TXQVDVNAKHFQPP-UHFFFAOYSA-N 0.000 claims description 4
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 4
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 4
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical group [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 4
- 239000008116 calcium stearate Substances 0.000 claims description 4
- 235000013539 calcium stearate Nutrition 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000008117 stearic acid Substances 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 229960000892 attapulgite Drugs 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 3
- ZJOLCKGSXLIVAA-UHFFFAOYSA-N ethene;octadecanamide Chemical compound C=C.CCCCCCCCCCCCCCCCCC(N)=O.CCCCCCCCCCCCCCCCCC(N)=O ZJOLCKGSXLIVAA-UHFFFAOYSA-N 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 3
- 229960001545 hydrotalcite Drugs 0.000 claims description 3
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052625 palygorskite Inorganic materials 0.000 claims description 3
- 238000005453 pelletization Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000010456 wollastonite Substances 0.000 claims description 3
- 229910052882 wollastonite Inorganic materials 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims 1
- 229920002554 vinyl polymer Polymers 0.000 claims 1
- 239000001993 wax Substances 0.000 claims 1
- 238000002425 crystallisation Methods 0.000 abstract description 8
- 230000008025 crystallization Effects 0.000 abstract description 8
- 230000002195 synergetic effect Effects 0.000 abstract description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract description 4
- 239000002861 polymer material Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 18
- 238000012360 testing method Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 13
- 239000000155 melt Substances 0.000 description 8
- 230000001629 suppression Effects 0.000 description 8
- 239000004677 Nylon Substances 0.000 description 7
- 229920001778 nylon Polymers 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 5
- 230000002401 inhibitory effect Effects 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000010899 nucleation Methods 0.000 description 3
- 230000006911 nucleation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000088 plastic resin Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- DVTPRYHENFBCII-IMJSIDKUSA-N (2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinic acid Chemical compound O[C@H]1C[C@@H](C(O)=O)N=C(C(O)=O)C1 DVTPRYHENFBCII-IMJSIDKUSA-N 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229940092690 barium sulfate Drugs 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 159000000007 calcium salts Chemical class 0.000 description 2
- 150000007942 carboxylates Chemical class 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229960000829 kaolin Drugs 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 235000012222 talc Nutrition 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- 229920006152 PA1010 Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229940095626 calcium fluoride Drugs 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004597 plastic additive Substances 0.000 description 1
- 229920006111 poly(hexamethylene terephthalamide) Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920006012 semi-aromatic polyamide Polymers 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
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
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/24—Crystallisation aids
Definitions
- the invention relates to the technical field of polymer materials, in particular to a nylon 66 material and a preparation method thereof.
- Polyamide (PA, nylon) is an assembly of high polymers containing amide groups in the repeating unit of the macromolecular main chain. Because polyamide has good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubricating properties, low friction coefficient, certain flame retardancy and easy processing, it has become a It is a type of polymer material with the widest application and variety in the engineering plastics industry. There are many varieties of PA, including PA6, PA66, PA11, PA12, PA46, PA610, PA612, PA1010, semi-aromatic nylon PA6T and special nylon.
- Polyamide 66 or nylon 66 which is formed by the polycondensation of adipic acid and hexamethylenediamine, is a translucent or opaque milky white or yellowish granular crystalline polymer. Due to its excellent mechanical properties, heat resistance, wear resistance, self-lubrication, low temperature resistance, and flame retardancy, it is widely used in the automotive industry, instrument housings, and other products that require impact resistance and high strength. In actual production, the fluidity of PA66 material has always been a concern in the injection molding process.
- PA66 material has good fluidity, so when it is used to inject large parts or thin-walled parts, due to factors such as complex mold and high injection temperature, it is easy to cause PA66 to flow into the fine gaps of the mold, resulting in flying Phenomena such as edges and flashes will affect the normal injection molding production efficiency, increase the defective rate of products, increase the subsequent process of trimming flashes, and also cause certain damage to the mold.
- the common solution for glass fiber reinforced PA66 materials is to increase the proportion of fillers in PA66 materials (such as glass fibers) or increase the viscosity (ie relative molecular weight) of PA66 to suppress the problem of flashing.
- PA66 materials such as glass fibers
- viscosity ie relative molecular weight
- increasing the proportion of fillers will lead to an increase in the density of the PA66 material, which will affect the toughness of the product, and the torque of the high-viscosity PA66 modified extrusion will be large, resulting in a greatly reduced processing efficiency.
- the two The effect of this method to reduce flash is also very limited.
- the embodiment of the present invention provides a new nylon 66 material to overcome the problem that PA66 in the prior art tends to flow into the tiny gaps of the mold during injection molding, resulting in flashes and flashes, etc. question.
- nylon 66 material calculated by weight percentage, the components of said nylon 66 material include:
- the ratio of the first flash suppressor to the second flash suppressor is 1:10 ⁇ 1:90.
- the components of the nylon 66 material include:
- PA66 37.4% ⁇ 79.4%, the first flash inhibitor 0.2% ⁇ 1%, the second flash inhibitor 5% ⁇ 10%, glass fiber 15% ⁇ 50%, antioxidant 0.2% ⁇ 0.8%, lubricant 0.2%-0.8%, wherein, the second flash suppressor is aromatic polyamide.
- the components of the nylon 66 material include:
- PA66 64 1.1%, talc powder 0.3%, PA6T/66 5%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3%.
- aromatic polyamide includes one or more of PA66/6T, PA6T/66, PA6T/6, PA6T/66/6, and PA6T/6I.
- the first flash inhibitor is a nucleating agent.
- the nucleating agent includes talcum powder, montmorillonite, calcium salt of carboxylate, phenyl hypophosphite, P22, wollastonite, alumina, barium sulfate, hydrotalcite, kaolin, attapulgite, calcium fluoride one or more of.
- the relative sulfuric acid viscosity of the PA66 is 2.1-3.8.
- the antioxidant includes one or more of antioxidant 168, antioxidant 1010, and antioxidant 1098.
- the lubricant is one or more of calcium stearate, stearic acid, ethylene bisstearamide, pentaerythritol stearate, silicone powder, and polyethylene wax.
- a kind of nylon 66 material and its preparation method provided by the embodiment of the present invention by adding the first flash suppressor and the second flash suppressor in the glass fiber reinforced PA66 system, on the one hand, the second flash suppressor adopts Aromatic polyamide, using the characteristics of rigid benzene ring in the molecule of aromatic polyamide, relatively high crystallization temperature, and good compatibility with PA66, can be entangled with PA66 molecular chains, which can be very good flow, and can be formed quickly, which greatly inhibits the generation of flash.
- the second flash inhibitor plays a major role in inhibiting flash, and the first flash inhibitor acts synergistically. The combination can produce a synergistic effect, further increase the nucleation speed, accelerate the crystallization process, and further reduce the generation of flash under the condition of adding the second flash inhibitor.
- Fig. 1 is the flow chart of the preparation method of the nylon 66 material that the embodiment of the application provides;
- Fig. 2 is a schematic structural view of a cuboid test strip mold provided in an embodiment of the present application.
- the present invention proposes a new nylon 66 material, by adding the first flash inhibitor to the glass fiber reinforced PA66 system (referring to adding an appropriate amount of glass fiber to the polyamide to enhance the rigidity) and the second flash suppressor, wherein the first flash suppressor can use a nucleating agent, and the second flash suppressor can use an aromatic polyamide.
- the nucleating agent can increase the rate of nucleation when the glass fiber reinforced PA66 melt is injected into the mold and contacts the mold wall, so that the melt can be solidified rapidly, and the melt can be inhibited from flowing out of the mold gap, thereby reducing flashing.
- Aromatic polyamide has a rigid benzene ring in its molecule, and its crystallization temperature is relatively high. At the same time, it has good compatibility with PA66 and can entangle with PA66 molecular chains. It can not only flow well, but also can be quickly molded. , which greatly suppresses the generation of flash.
- the ratio of the first flash suppressor to the second flash suppressor is 1:10 ⁇ 1:90.
- the first flash suppressor and the second flash suppressor have a certain effect when used alone, when the two are compounded according to any ratio between 1:10 and 1:90 When used together, it can produce a synergistic effect, further reduce the flash, and the inhibitory effect on the flash will tend to be stable, and if the ratio continues to increase, it will affect the mechanical properties of the glass fiber reinforced PA66 material.
- the ratio of the first flash suppressor to the second flash suppressor is 1:16.7.
- the components of the nylon 66 material include:
- PA66 37.4% ⁇ 79.4%, the first flash inhibitor 0.2% ⁇ 1%, the second flash inhibitor 5% ⁇ 10%, glass fiber 15% ⁇ 50%, antioxidant 0.2% ⁇ 0.8%, lubricant 0.2%-0.8%, wherein, the second flash suppressor is aromatic polyamide.
- the components of the nylon 66 material include:
- PA66 64 1.1%, talc powder 0.3%, PA6T/66 5%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3%.
- the nylon 66 material when the nylon 66 material is prepared according to the ratio of the above components, its effect of suppressing flash is better, and other properties are not affected.
- the first flash inhibitor is talcum powder with a mesh number of 2000-30000
- the second flash inhibitor is PA6T/66.
- the aromatic polyamide includes one or more of PA66/6T, PA6T/66, PA6T/6, PA6T/66/6, PA6T/6I .
- aromatic polyamide (referred to as aramid) is a synthetic fiber made from aromatic materials through polycondensation and spinning. This kind of fiber has good heat resistance and insulation performance, and its working chemical performance is stable. It has good resistance to weak acid, weak alkali and most organic solvents.
- Aromatic polyamides include but are not limited to PA66/6T, PA6T/66, PA6T/6, PA6T/66/6, PA6T/6I, etc.
- aromatic polyamides can be the above-mentioned components one or a mixture of more.
- PA6T/66 is used as the second flash suppressor.
- the crystallization temperature is relatively high, and at the same time, it has good compatibility with PA66, and can be entangled with PA66 molecular chains, which can flow well and quickly Forming, greatly suppressing the generation of flash.
- the weight percentage of the second flash suppressor ranges from 3% to 10%, preferably, the weight percentage of the second flash suppressor is 5%.
- the first flash inhibitor is a nucleating agent.
- the nucleating agent can accelerate the crystallization rate, increase the crystallization density and promote the miniaturization of the grain size, so as to shorten the molding cycle, improve the transparency of the product, surface gloss, tensile strength, rigidity, thermal Deformation temperature, impact resistance, creep resistance and other physical and mechanical properties.
- the nucleating agent and aromatic polyamide are added to the glass fiber reinforced PA66 system according to a certain proportion to be used together as a flash inhibitor.
- the nucleating agent can have a synergistic effect with the aromatic polyamide, further reducing Generation of flash edges.
- the weight percentage of the first flash suppressor ranges from 0.1% to 1%, preferably, the weight percentage of the first flash suppressor is 0.3%.
- the nucleating agent includes one or more of talc, montmorillonite, calcium carboxylate, phenyl hypophosphite, and calcium fluoride.
- nucleating agents include, but are not limited to, talc, montmorillonite, calcium salt of carboxylate, phenyl hypophosphite, P22 (nylon 22), wollastonite, alumina, barium sulfate, hydrotalcite, kaolin, attapulgite rods, calcium fluoride, etc.
- the nucleating agent used as the first flash suppressor may be a mixture of one or more of the above components.
- talcum powder is used as the first flash inhibitor, and the mesh number of the talcum powder is any value in [2000-30000].
- the mesh number of the talcum powder is 20000.
- the relative sulfuric acid viscosity of the PA66 is 2.1-3.8.
- the relative sulfuric acid viscosity of PA66 can characterize the relative molecular weight of PA66.
- the relative sulfuric acid viscosity of PA66 is 2.4.
- the antioxidant includes one or more of the antioxidant 168, the antioxidant 1010, and the antioxidant 1098.
- plastic resins usually plastic resins have different thermal oxidation reaction speeds and thermal oxidation resistance reactions due to different molecular structures, or different polymerization processes, different processing technologies, and different use environments and conditions of the same molecular structure.
- Antioxidants are added to plastic resin as a plastic additive, which can effectively inhibit or reduce the thermal oxidation reaction speed of plastic macromolecules, delay the thermal and oxygen degradation process of plastic resin, and significantly improve the heat resistance of plastic resin. Extend the service life of plastic products and improve the use value of plastic products.
- antioxidants include but are not limited to antioxidant 168, antioxidant 1010, antioxidant 1098, etc. In specific implementation, one or more of the above antioxidants can be used, There is no limit here.
- the weight percentage of the antioxidant is in the range of 0.1% to 1%, preferably, the ratio of the weight percentage of the antioxidant is 0.3%.
- the lubricant is calcium stearate, stearic acid, ethylene bis stearic acid amide, pentaerythritol stearate, silicone powder, polyethylene wax one or more of.
- a lubricant is usually added during the preparation process, which can have a polar group structure combined with some polar groups on the surface of the glass fiber to improve the bonding state between the glass fiber and the reinforced PA66 particle resin The role, thereby improving its dispersion in the resin.
- adding lubricant can also improve the processing fluidity of glass fiber reinforced nylon and improve the surface finish of the material.
- the addition of lubricants will also have a certain impact on the appearance of reinforced nylon products.
- the resistance is different due to the uneven thickness.
- the flow space at the thin interface is small, the resistance is large, and the flow rate is slow.
- the glass fiber will Migrating to the surface, resulting in glass fiber exposure, after adding lubricant, the melt fluidity of glass fiber reinforced nylon is significantly improved, the flow rate of melt in the mold cavity is accelerated, and the glass fiber exposure phenomenon is reduced.
- lubricants include but are not limited to calcium stearate, stearic acid, ethylene bisstearic acid amide, pentaerythritol stearate, silicone powder, polyethylene wax, etc. , one or more of the above can be selected.
- the weight percentage of the lubricant ranges from 0.1% to 1%, preferably, the weight percentage ratio of the lubricant is 0.3%.
- the components of the nylon 66 material in the examples of the present application can also add other processing aids according to actual processing requirements to improve the performance of the nylon 66 material. No other processing aids are mentioned here. There are specific restrictions, and users can choose according to actual needs.
- the embodiment of the present invention also provides a preparation method of nylon 66 material, as shown in Figure 1, the method includes the following steps:
- the nylon 66 material is obtained after pelletizing by a pelletizer, and the rotating speed of the pelletizer is 500rpm-700rpm.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 27%, glass fiber 72.4%, antioxidant 0.3%, lubricant 0.3%, among which the relative sulfuric acid viscosity of PA66 is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 56.8%, glass fiber 42.6%, antioxidant 0.3%, lubricant 0.3%, among which the relative sulfuric acid viscosity of PA66 is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 69.4%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3%, among which the relative sulfuric acid viscosity of PA66 is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 86.7%, glass fiber 12.7%, antioxidant 0.3%, lubricant 0.3%, among which the relative sulfuric acid viscosity of PA66 is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 89.4%, glass fiber 10%, antioxidant 0.3%, lubricant 0.3%, among which the relative sulfuric acid viscosity of PA66 is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 64 1%, PA6T/66 (second flash inhibitor) 5%, talc powder (first flash inhibitor) 0.3%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3%, of which PA66 The relative sulfuric acid viscosity is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 64 1%, PA66/6T (second flash inhibitor) 5%, talc powder (first flash inhibitor) 0.3%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3%, of which PA66 The relative sulfuric acid viscosity is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 64 1%, PA6T/66 (second flash inhibitor) 5%, talc powder (first flash inhibitor) 0.3%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3%, of which PA66 The relative sulfuric acid viscosity is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 64 1%, PA6T/6 (second flash inhibitor) 5%, talc powder (first flash inhibitor) 0.3%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3%, of which PA66 The relative sulfuric acid viscosity is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 64 1%, PA6T/66 (second flash inhibitor) 5%, montmorillonite (first flash inhibitor) 0.3%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3%, of which PA66 The relative viscosity of sulfuric acid is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 64 1.1%, PA6T/66 (second flash inhibitor) 5%, carboxylate calcium salt (first flash inhibitor) 0.3%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3%, of which The relative sulfuric acid viscosity of PA66 is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 64 1.1%, PA6T/66 (second flash inhibitor) 5%, 2000 mesh talc powder (first flash inhibitor) 0.3%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3% , where the relative sulfuric acid viscosity of PA66 is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 64 1.1%, PA6T/66 (second flash inhibitor) 5%, 4000 mesh talc powder (first flash inhibitor) 0.3%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3% , where the relative sulfuric acid viscosity of PA66 is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 64 1.1%, PA6T/66 (second flash inhibitor) 5%, 10000 mesh talc powder (first flash inhibitor) 0.3%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3% , where the relative sulfuric acid viscosity of PA66 is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- PA66 64 1.1%, PA6T/66 (second flash inhibitor) 5%, 20000 mesh talc powder (first flash inhibitor) 0.3%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3% , where the relative sulfuric acid viscosity of PA66 is 2.4.
- a kind of nylon 66 material calculated according to weight percentage, its component comprises:
- the PA66 involved in the above-mentioned comparative examples and examples can adopt the PA66 product sold by Henan Shenma Nylon New Material Co., Ltd., and the glass fiber can adopt ECS301HP-3-H and PA6T/66 sold by Chongqing International Composite Materials Co., Ltd.
- PA6T/6 can use HTPA 1145 sold by Qingdao Sanlipenuo New Material Co., Ltd.
- talcum powder can be used by Quanzhou Xufeng Powder Raw Materials Co., Ltd.
- the talcum powder and calcium carboxylate sold can be CAV102 sold by Clariant Chemicals (China) Co., Ltd.
- the montmorillonite can be sold by DK4 sold by Zhejiang Fenghong New Materials Co., Ltd.
- the antioxidant can be sold by American Albemarle The S2225P and the lubricant can use the EBS sold by Lonza in the United States.
- Fig. 2 is the structural representation of the rectangular parallelepiped test bar mold that the embodiment of the present application provides, with reference to shown in Fig. 2, for comparing and simulating the flash that produces in the actual injection molding, the present invention uses the rectangular parallelepiped test bar mold of 140mm*10mm*0.4mm, A gap of 10mm*5mm*0.05mm is processed at the end of the test strip, and the flash edge overflowing from the gap is used to characterize the flash edge of the glass fiber reinforced PA66 material.
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Abstract
本发明公开了一种尼龙66材料及其制备方法，属于高分子材料技术领域。按照重量百分比计算，尼龙66材料的组分包括：PA66 27％～86.7％、第一飞边抑制剂0.1％～1％、第二飞边抑制剂3％～10％、玻璃纤维10％～60％、抗氧剂0.1％～1％、润滑剂0.1％～1％，其中，第二飞边抑制剂为芳香族聚酰胺。本发明通过将芳香族聚酰胺作为第二飞边抑制剂，利用芳香族聚酰胺的分子中带有刚性苯环、结晶温度相对较高、同时和PA66的相容性很好等特性，能够与PA66分子链相互缠结，既能很好的流动，又能快速的成型，极大的抑制飞边的产生，同时第一飞边抑制剂可以与第二飞边抑制剂产生协同效应，进一步地减小飞边的产生。
Description
本发明涉及高分子材料技术领域，特别涉及一种尼龙66材料及其制备方法。
聚酰胺(PA，尼龙)是大分子主链重复单元中含有酰胺基团的高聚物的总成。由于聚酰胺具有良好的综合性能，包括力学性能、耐热性、耐磨损性、耐化学药品性和自润滑性，且摩擦系数低，有一定的阻燃性，易于加工等特点，因而成为工程塑料行业中用途最广、品种最多的一类高分子材料。PA的品种繁多，有PA6、PA66、PA11、PA12、PA46、PA610、PA612、PAl010以及半芳香族尼龙PA6T和特种尼龙等品种。
聚酰胺66或尼龙66(PA66)，由己二酸和己二胺缩聚而成，是一种半透明或不透明乳白或带黄色颗粒状结晶形聚合物。由于其具有优良的力学、耐热、耐磨、自润滑、耐低温、阻燃性等性能而被广泛应用于汽车工业、仪器壳体以及其它需要有抗冲击性和高强度要求的产品。实际生产中，PA66材料的流动性一直是注塑加工过程中备受关注的问题。PA66材料具有良好的流动性，因而使用其在注塑较大的制件或者薄壁的制件时，由于模具复杂和注塑温度较高等因素，容易导致PA66会流动到模具的细微缝隙中，产生飞边和溢料等现象，从而影响正常的注塑生产效率，提高制品的不良率，增加后续修剪飞边的工序，同时也对模具有一定的损害。
目前针对玻纤增强PA66材料常用的解决方法是采用增加PA66材料中填充物比例(如玻璃纤维)或增加PA66的粘度(即相对分子量)来抑制飞边问题。然而，一方面，增加填充物的比例会导致PA66材料密度增大，影响制品的韧性，而高粘度的PA66改性挤出时的扭矩较大，导致加工效率大大降低，另一方面，这两种方法降低飞边的效果也很有限。
因此，亟需提出一种新的PA66材料，以解决上述问题。
发明内容
为了解决现有技术的问题，本发明实施例提供了一种新的尼龙66材料，以克服现有技术中存在的PA66在注塑时容易流动到模具的细微缝隙中，产生飞边和溢料等问题。
为解决上述一个或多个技术问题，本申请采用的技术方案是：
一方面，提供了一种尼龙66材料，按照重量百分比计算，所述尼龙66材料的组分包括：
PA66 27％～86.7％、第一飞边抑制剂0.1％～1％、第二飞边抑制3％～10％、玻璃纤维10％～60％、抗氧剂0.1％～1％、润滑剂0.1％～1％，其中，所述第二飞边抑制剂为芳香族聚酰 胺。
进一步地，所述第一飞边抑制剂与所述第二飞边抑制剂的比例为1:10～1:90。
进一步地，按照重量百分比计算，所述尼龙66材料的组分包括：
PA66 37.4％～79.4％、第一飞边抑制剂0.2％～1％、第二飞边抑制剂5％～10％、玻璃纤维15％～50％、抗氧剂0.2％～0.8％、润滑剂0.2％～0.8％，其中，所述第二飞边抑制剂为芳香族聚酰胺。
进一步地，按照重量百分比计算，所述尼龙66材料的组分包括：
PA66 64.1％、滑石粉0.3％、PA6T/66 5％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％。
进一步地，所述芳香族聚酰胺包括PA66/6T、PA6T/66、PA6T/6、PA6T/66/6、PA6T/6I中的一种或多种。
进一步地，所述第一飞边抑制剂为成核剂。
进一步地，所述成核剂包括滑石粉、蒙脱土、羧酸钙盐、苯基次磷酸盐、P22、硅灰石、氧化铝、硫酸钡、水滑石、高岭土、凹凸棒、氟化钙中的一种或多种。
进一步地，所述PA66的相对硫酸粘度为2.1～3.8。
进一步地，所述抗氧剂包括抗氧剂168、抗氧剂1010、抗氧剂1098中的一种或多种。
进一步地，所述润滑剂为硬脂酸钙、硬脂酸、乙撑双硬脂酸酰胺、季戊四醇硬脂酸酯、硅酮粉、聚乙烯蜡中的一种或多种。
另一方面，提供了一种尼龙66材料的制备方法，所述方法包括：
按照以下重量百分比准备原料：
PA66 27％～86.7％、第一飞边抑制剂0.1％～1％、第二飞边抑制剂3％～10％、玻璃纤维10％～60％、抗氧剂0.1％～1％、润滑剂0.1％～1％；
将上述PA66、第一飞边抑制剂、第二飞边抑制剂、抗氧剂以及润滑剂通过混料机混合均匀后，加入到双螺杆挤出机中进行融合混炼，通过侧向喂料加入玻璃纤维，将挤出的料条经过水槽进行冷却，冷却水温度为15℃～20℃，通过切粒机切粒后烘干，得到尼龙66材料，其中，切粒机转速为500rpm～700rpm。
本发明实施例提供的技术方案带来的有益效果是：
本发明实施例提供的一种尼龙66材料及其制备方法，通过在玻纤增强PA66体系中，加入第一飞边抑制剂以及第二飞边抑制剂，一方面，第二飞边抑制剂采用芳香族聚酰胺，利用芳香族聚酰胺的分子中带有刚性苯环、结晶温度相对较高、同时和PA66的相容性很好等特 性，能够与PA66分子链相互缠结，既能很好的流动，又能快速的成型，极大的抑制飞边的产生，另一方面，第二飞边抑制剂起主要的抑制飞边的作用，第一飞边抑制剂进行协同作用，两者复配可以产生协同效应，在加入第二飞边抑制剂的情况下进一步提升成核速度，加速结晶过程，进一步地减小飞边的产生。
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的尼龙66材料的制备方法的流程图；
图2是本申请实施例提供的长方体试条模具的结构示意图。
为使本发明的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
如背景技术所述，现有技术中存在PA66在注塑时容易流动到模具的细微缝隙中，产生飞边和溢料等问题。为解决这一问题，本发明提出了一种新的尼龙66材料，通过在玻纤增强PA66体系(指在聚酰胺中加入适当量的玻璃纤维，使刚性增强)中加入第一飞边抑制剂和第二飞边抑制剂，其中，第一飞边抑制剂可以采用成核剂，第二飞边抑制剂可以采用芳香族聚酰胺。成核剂可以提高玻纤增强PA66熔体注射到模具中、接触到模具壁后降温成核的速度，使熔体迅速固化，抑制熔体从模具缝隙中流出，从而减少飞边现象。芳香族聚酰胺的分子中带有刚性苯环，结晶温度相对较高，同时和PA66的相容性很好，能够与PA66分子链相互缠结，既能很好的流动，又能快速的成型，极大的抑制飞边的产生。
作为一种较优的实施方式，本发明实施例中，所述第一飞边抑制剂与所述第二飞边抑制剂的比例为1:10～1:90。
具体的，本发明实施例中，虽然第一飞边抑制剂和第二飞边抑制剂单独使用都有一定的效果，但是，当两者按照1:10～1:90之间任一比例复配使用时，则可以产生协同效应，进一步地减小飞边，并且对飞边的抑制效果会趋于稳定，而如果继续提升比例则会影响玻纤增强PA66材料的力学性能。优选地，本发明实施例中，在不影响尼龙66材料其他性能的 前提下，第一飞边抑制剂与第二飞边抑制剂的比例为1:16.7。
作为一种较优的实施方式，本发明实施例中，按照重量百分比计算，所述尼龙66材料的组分包括：
PA66 37.4％～79.4％、第一飞边抑制剂0.2％～1％、第二飞边抑制剂5％～10％、玻璃纤维15％～50％、抗氧剂0.2％～0.8％、润滑剂0.2％～0.8％，其中，所述第二飞边抑制剂为芳香族聚酰胺。
作为一种较优的实施方式，本发明实施例中，按照重量百分比计算，所述尼龙66材料的组分包括：
PA66 64.1％、滑石粉0.3％、PA6T/66 5％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％。
具体地，当尼龙66材料按照上述组分进行配比制备时，其抑制飞边的效果较优，且其他性能不受影响。优选地，第一飞边抑制剂为目数为2000-30000的滑石粉，第二飞边抑制剂为PA6T/66。
作为一种较优的实施方式，本发明实施例中，所述芳香族聚酰胺包括PA66/6T、PA6T/66、PA6T/6、PA6T/66/6、PA6T/6I中的一种或多种。
具体地，芳香族聚酰胺(简称芳纶)是以芳香族为原料经缩聚纺丝制得的合成纤维。此种纤维耐热性及绝缘性能很好，而且工作化学性能稳定，对于弱酸，弱碱及大部分有机溶剂有很好的抵抗性。芳香族聚酰胺包括但不限于PA66/6T、PA6T/66、PA6T/6、PA6T/66/6、PA6T/6I等，在作为第二飞边抑制剂使用时，芳香族聚酰胺可以是上述成分中的一种或者多种的混合物。优选地，第二飞边抑制剂采用PA6T/66。由于芳香族聚酰胺的分子中带有刚性苯环，结晶温度相对较高，同时和PA66的相容性很好，能够与PA66分子链相互缠结，既能很好的流动，又能快速的成型，极大的抑制飞边的产生。
具体地，本发明实施例中，第二飞边抑制剂的重量百分比范围为3％～10％，优选地，第二飞边抑制剂重量百分比为5％。
作为一种较优的实施方式，本发明实施例中，所述第一飞边抑制剂为成核剂。
具体地，通常成核剂可以通过改变树脂的结晶行为，加快结晶速率、增加结晶密度和促使晶粒尺寸微细化，达到缩短成型周期、提高制品透明性、表面光泽、抗拉强度、刚性、热变形温度、抗冲击性、抗蠕变性等物理机械性能。本发明实施中，将成核剂与芳香族聚酰胺按照一定比例添加到玻纤增强PA66体系中共同作为飞边抑制剂使用，一方面，利用成核剂本身特性，提高玻纤增强PA66熔体注射到模具中，接触到模具壁降温成核的速度，使熔体迅速固化，抑制熔体从模具缝隙中流出，另一方面，成核剂能够与芳香族聚酰胺产生 协同效应，进一步地减小飞边的产生。
具体地，本发明实施例中，第一飞边抑制剂的重量百分比范围为0.1％～1％，优选地，第一飞边抑制剂重量百分比为0.3％。
作为一种较优的实施方式，本发明实施例中，所述成核剂包括滑石粉、蒙脱土、羧酸钙盐、苯基次磷酸盐、氟化钙中的一种或多种。
具体地，成核剂包括但不限于滑石粉、蒙脱土、羧酸钙盐、苯基次磷酸盐、P22(尼龙22)、硅灰石、氧化铝、硫酸钡、水滑石、高岭土、凹凸棒、氟化钙等。本发明实施例中，作为第一飞边抑制剂使用的成核剂可以是上述成分中的一种或多种的混合物。优选地，第一飞边抑制剂采用滑石粉，滑石粉的目数为[2000-30000]中的任意值，优选地，滑石粉的目数为20000。
作为一种较优的实施方式，本发明实施例中，所述PA66的相对硫酸粘度为2.1～3.8。
具体地，PA66的相对硫酸粘度可以表征PA66的相对分子量，相对硫酸粘度越大，则分子量越大，飞边越小。优选地，PA66的相对硫酸粘度为2.4。
作为一种较优的实施方式，本发明实施例中，所述抗氧剂包括抗氧剂168、抗氧剂1010、抗氧剂1098中的一种或多种。
具体地，通常塑料树脂因分子结构不同，或同分子结构因聚合工艺不同、加工工艺不同、使用环境和条件不同，自身的热氧化反应速度和抗热氧化反应能力也有很大不同。抗氧剂作为一种塑料助剂添加于塑料树脂中，可以有效地抑制或降低塑料大分子的热氧化反应速度，延缓塑料树脂的热、氧降解过程，显著地提高塑料树脂的耐热性能，延长塑料制品使用寿命，提高塑料制品使用价值。
具体地，本发明实施例中，抗氧剂包括但不限于抗氧剂168、抗氧剂1010、抗氧剂1098等，具体实施时，可以采用上述抗氧剂中的一种或多种，这里不做限制。另外，本发明实施例中，抗氧剂的重量百分比范围为0.1％～1％，优选地，抗氧剂重量百分的比为0.3％。
作为一种较优的实施方式，本发明实施例中，所述润滑剂为硬脂酸钙、硬脂酸、乙撑双硬脂酸酰胺、季戊四醇硬脂酸酯、硅酮粉、聚乙烯蜡中的一种或多种。
具体地，PA66在加工过程中常常会由于熔体粘度过大而造成制品粗糙，缺乏光泽或出现流纹以及玻璃纤维外露等问题。为了能解决这些问题，通常会在制备过程中加入润滑剂，可具有与玻纤表面部分极性基团相结合的极性基团结构，起到改善玻纤与增强PA66颗 粒树脂的粘结状态的作用，进而改善其在树脂中的分散性。加入润滑剂除了增强润滑特性外，还可以改善玻纤增强尼龙的加工流动性，提高材料表面的光洁度。另外加入润滑剂对增强尼龙制品的外观也会有一定的影响。熔体在模腔中流动时，由于厚度不均匀，导致受到的阻力不同，薄界面处流动空间小，受到的阻力大，流动速率慢，在成型的时候，由于熔体受力，玻纤会迁移到表面，造成玻纤外露的情况，加入润滑剂后，玻纤增强尼龙的熔体流动性得到明显的提高，熔体在模腔中的流动速率加快，使玻纤外露现象减少。
具体地，本发明实施例中，润滑剂包括但不限于硬脂酸钙、硬脂酸、乙撑双硬脂酸酰胺、季戊四醇硬脂酸酯、硅酮粉、聚乙烯蜡等，具体实施时，可以选取上述中的一种或多种。具体地，本发明实施例中，润滑剂的重量百分比范围为0.1％～1％，优选地，润滑剂重量百分的比为0.3％。
这里需要说明的是，本申请实施例中的尼龙66材料的组分除了包括上述成分以外，还可以根据实际加工需求添加其他加工助剂，以改善尼龙66材料的性能，这里不对其他加工助剂的做具体限制，用户可以根据实际需求进行选择。
对应于上述尼龙66材料，本发明实施例还提供了一种尼龙66材料的制备方法，参照图1所示，该方法包括如下步骤：
S1：按照以下重量百分比准备原料：
PA66 27％～86.7％、第一飞边抑制剂0.1％～1％、第二飞边抑制剂3％～10％、玻璃纤维10％～60％、抗氧剂0.1％～1％、润滑剂0.1％～1％；
S2：将上述PA66、第一飞边抑制剂、第二飞边抑制剂、抗氧剂以及润滑剂通过混料机混合均匀后，加入到双螺杆挤出机中进行融合混炼；
S3：通过侧向喂料加入玻璃纤维，将挤出的料条经过水槽进行冷却，其中，冷却水温度为15℃～20℃；
S4：通过切粒机切粒后烘干，得到尼龙66材料，其中，切粒机转速为500rpm～700rpm。
上述所有可选技术方案，可以采用任意结合形成本发明的可选实施例，在此不再一一赘述。
以下将结合实施例和对比例，进一步说明本申请的有益效果。
对比例1
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 27％、玻璃纤维72.4％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
对比例2
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 39.4％、玻璃纤维60％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
对比例3
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 56.8％、玻璃纤维42.6％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
对比例4
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、玻璃纤维35.3％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
对比例5
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 69.4％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
对比例6
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 86.7％、玻璃纤维12.7％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
对比例7
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 89.4％、玻璃纤维10％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
对比例8
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、玻璃纤维35.3％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.1。
对比例9
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、玻璃纤维35.3％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.7。
对比例10
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、玻璃纤维35.3％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为3.2。
实施例1
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 66.4％、PA6T/66(第二飞边抑制剂)3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例2
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.4％、PA6T/66(第二飞边抑制剂)5％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例3
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 62.4％、PA6T/66(第二飞边抑制剂)7％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例4
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 59.4％、PA6T/66(第二飞边抑制剂)10％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例5
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 69.3％、滑石粉(第一飞边抑制剂)0.1％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例6
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 69.1％、滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例7
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 68.8％、滑石粉(第一飞边抑制剂)0.6％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例8
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 68.4％、滑石粉(第一飞边抑制剂)1％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例9
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.3％、PA6T/66(第二飞边抑制剂)5％、滑石粉(第一飞边抑制剂)0.1％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例10
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、PA6T/66(第二飞边抑制剂)5％、滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例11
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 63.8％、PA6T/66(第二飞边抑制剂)5％、滑石粉(第一飞边抑制剂)0.6％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例12
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 63.4％、PA6T/66(第二飞边抑制剂)5％、滑石粉(第一飞边抑制剂)1％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例13
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.3％、PA6T/66(第二飞边抑制剂)5％、滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.1％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例14
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 63.9％、PA6T/66(第二飞边抑制剂)5％、滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.5％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例15
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 63.4％、PA6T/66(第二飞边抑制剂)5％、滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂1％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例16
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.3％、PA6T/66(第二飞边抑制剂)5％、滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.1％，其中PA66的相对硫酸粘度为2.4。
实施例17
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 63.9％、PA6T/66(第二飞边抑制剂)5％、滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.5％，其中PA66的相对硫酸粘度为2.4。
实施例18
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 63.4％、PA6T/66(第二飞边抑制剂)5％、滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂1％，其中PA66的相对硫酸粘度为2.4。
实施例19
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、PA66/6T(第二飞边抑制剂)5％、滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例20
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、PA6T/66(第二飞边抑制剂)5％、滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例21
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、PA6T/6(第二飞边抑制剂)5％、滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例22
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、PA6T/66(第二飞边抑制剂)5％、蒙脱土(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例23
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、PA6T/66(第二飞边抑制剂)5％、羧酸钙盐(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例24
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、PA6T/66(第二飞边抑制剂)5％、2000目数的滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例25
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、PA6T/66(第二飞边抑制剂)5％、4000目数的滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例26
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、PA6T/66(第二飞边抑制剂)5％、10000目数的滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例27
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、PA6T/66(第二飞边抑制剂)5％、20000目数的滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
实施例28
一种尼龙66材料，按照重量百分比计算，其组分包括：
PA66 64.1％、PA6T/66(第二飞边抑制剂)5％、30000目数的滑石粉(第一飞边抑制剂)0.3％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％，其中PA66的相对硫酸粘度为2.4。
其中，上述对比例以及实施例中涉及的PA66可以采用河南神马尼龙新材有限责任公司销售的PA66产品、玻璃纤维可以采用重庆国际复合材料股份有限公司销售的ECS301HP- 3-H、PA6T/66可以采用青岛三力本诺新材料股份有限公司销售的HTPA 1245、PA6T/6可以采用青岛三力本诺新材料股份有限公司销售的HTPA 1145、滑石粉可以采用泉州市旭丰粉体原料有限公司销售的滑石粉产品、羧酸钙盐可以采用科莱恩化工(中国)有限公司销售的CAV102、蒙脱土可以采用浙江丰虹新材料股份有限公司销售的DK4、抗氧剂可以采用美国雅宝销售的S2225P、润滑剂可以采用美国龙沙销售的EBS。
图2是本申请实施例提供的长方体试条模具的结构示意图，参照图2所示，为比较和模拟实际注塑中产生的飞边，本发明以140mm*10mm*0.4mm的长方体试条模具，在试条末端加工出10mm*5mm*0.05mm的缝隙，以该缝隙溢出的飞边来表征玻纤增强PA66材料的飞边。
具体地，将上述对比例1至10、实施例1至28组分的尼龙66材料熔融后注入上述的长方体试条模具中，待冷却后，分别测量其飞边的尺寸，结果如下：
表1对比例1-10以及实施例1-18的尼龙66材料的测定结果
由上述表1的测试数据可知：
1、由对比例1至7的测试数据可知，增加玻璃纤维的比例可以对飞边起到一定抑制作用，随着玻纤比例的提升，对飞边的抑制作用趋势变缓。综合考虑到制品的收缩率和密度，优选采用30％玻璃纤维比例。由对比例1至7以及实施例1至18的测试数据可知，增加玻璃纤维的比例抑制飞边的效果明显没有添加了飞边抑制剂(包括第一飞边抑制剂和/或第二飞边抑制剂)的效果好；
2、由对比例8至10的测试数据可知，增加PA66的相对硫酸黏度也可以对飞边起到一定抑制作用，进一步提升相对硫酸黏度，对飞边的抑制效果提升有限。由对比例8至10以及实施例1至18的测试数据可知，增加PA66的相对硫酸黏度抑制飞边的效果同样没有添加了飞边抑制剂(包括第一飞边抑制剂和/或第二飞边抑制剂)的效果好；
3、由实施例1至12的测试数据可知，起到主要飞边抑制作用的是第二飞边抑制剂，第一飞边抑制剂有一定协同作用，两者一起使用时的飞边抑制效果明显优于单独使用某一种的飞边抑制效果，进一步参照实施例1至4的测试数据可知，单独使用时，在保证尼龙66材料其 他性能的前提下，第二飞边抑制剂重量百分比为3％～10％时，其抑制飞边的效果较优，再提高比例对飞边抑制效果提升有限。进一步参照实施例5至8的测试数据可知第一飞边抑制剂重量百分比为0.1％～1％时，其抑制飞边的效果较优，再提高比例对飞边抑制效果提升有限。在保证尼龙66材料其他性能的前提下，第二飞边抑制剂与第一飞边抑制剂的比例为16.7:1时，两者协同抑制飞边的效果较优；
4、由实施例13至18的测试数据可知，抗氧剂以及润滑剂的重量百分比的改变对飞边抑制效果几乎没有影响。
表2实施例19-23的尼龙66材料的测定结果
由上述表2的测试数据可知：
由实施例19至23的测试数据可知，第二飞边抑制剂采用PA6T/66时飞边抑制效果最优，第一飞边抑制剂采用滑石粉时飞边抑制效果最优。
表3实施例24-28的尼龙66材料的测定结果
由上述表3的测试数据可知：
由实施例24至28的测试数据可知，滑石粉的目数对飞边抑制效果有一定影响，滑石粉的目数为20000时，飞边抑制效果最优。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
Claims (11)
- 一种尼龙66材料，其特征在于，按照重量百分比计算，所述尼龙66材料的组分包括：PA66 27％～86.7％、第一飞边抑制剂0.1％～1％、第二飞边抑制剂3％～10％、玻璃纤维10％～60％、抗氧剂0.1％～1％、润滑剂0.1％～1％，其中，所述第二飞边抑制剂为芳香族聚酰胺。
- 根据权利要求1所述的尼龙66材料，其特征在于，所述第一飞边抑制剂与所述第二飞边抑制剂的比例为1:10～1:90。
- 根据权利要求1或2的所述尼龙66材料，其特征在于，按照重量百分比计算，所述尼龙66材料的组分包括：PA66 37.4％～79.4％、第一飞边抑制剂0.2％～1％、第二飞边抑制剂5％～10％、玻璃纤维15％～50％、抗氧剂0.2％～0.8％、润滑剂0.2％～0.8％，其中，所述第二飞边抑制剂为芳香族聚酰胺。
- 根据权利要求1或2所述的尼龙66材料，其特征在于，按照重量百分比计算，所述尼龙66材料的组分包括：PA66 64.1％、滑石粉0.3％、PA6T/66 5％、玻璃纤维30％、抗氧剂0.3％、润滑剂0.3％。
- 根据权利要求1或2所述的尼龙66材料，其特征在于，所述芳香族聚酰胺包括PA66/6T、PA6T/66、PA6T/6、PA6T/66/6、PA6T/6I中的一种或多种。
- 根据权利要求1或2所述的尼龙66材料，其特征在于，所述第一飞边抑制剂为成核剂。
- 根据权利要求6所述的尼龙66材料，其特征在于，所述成核剂包括滑石粉、蒙脱土、羧酸钙盐、苯基次磷酸盐、P22、硅灰石、氧化铝、硫酸钡、水滑石、高岭土、凹凸棒、氟化钙中的一种或多种。
- 根据权利要求1或2所述的尼龙66材料，其特征在于，所述PA66的相对硫酸粘度为2.1～3.8。
- 根据权利要求1或2所述的尼龙66材料，其特征在于，所述抗氧剂包括抗氧剂168、抗氧剂1010、抗氧剂1098中的一种或多种。
- 根据权利要求1或2所述的尼龙66材料，其特征在于，所述润滑剂为硬脂酸钙、硬脂酸、乙撑双硬脂酸酰胺、季戊四醇硬脂酸酯、硅酮粉、聚乙烯蜡中的一种或多种。
- 一种尼龙66材料的制备方法，其特征在于，用于制备权利要求1所述的尼龙66材料，所述方法包括：按照以下重量百分比准备原料：PA66 27％～86.7％、第一飞边抑制剂0.1％～1％、第二飞边抑制剂3％～10％、玻璃纤维 10％～60％、抗氧剂0.1％～1％、润滑剂0.1％～1％；将上述PA66、第一飞边抑制剂、第二飞边抑制剂、抗氧剂以及润滑剂通过混料机混合均匀后，加入到双螺杆挤出机中进行融合混炼，通过侧向喂料加入玻璃纤维，将挤出的料条经过水槽进行冷却，冷却水温度为15℃～20℃，通过切粒机切粒后烘干，得到尼龙66材料，其中，切粒机转速为500rpm～700rpm。
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