CN110437641A - A kind of PTFE/LCP high polymer alloy and preparation method thereof - Google Patents
A kind of PTFE/LCP high polymer alloy and preparation method thereof Download PDFInfo
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- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 52
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 52
- 239000000956 alloy Substances 0.000 title claims abstract description 26
- 229920000642 polymer Polymers 0.000 title claims abstract description 26
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 229920000106 Liquid crystal polymer Polymers 0.000 claims abstract description 64
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 claims abstract description 58
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 57
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 57
- 239000003365 glass fiber Substances 0.000 claims abstract description 19
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 17
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 6
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 6
- 239000004974 Thermotropic liquid crystal Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 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
- 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 claims description 3
- YFHKLSPMRRWLKI-UHFFFAOYSA-N 2-tert-butyl-4-(3-tert-butyl-4-hydroxy-5-methylphenyl)sulfanyl-6-methylphenol Chemical compound CC(C)(C)C1=C(O)C(C)=CC(SC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 YFHKLSPMRRWLKI-UHFFFAOYSA-N 0.000 claims description 3
- MQWCQFCZUNBTCM-UHFFFAOYSA-N 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5-methylphenyl)sulfanyl-4-methylphenol Chemical compound CC(C)(C)C1=CC(C)=CC(SC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O MQWCQFCZUNBTCM-UHFFFAOYSA-N 0.000 claims description 3
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 3
- GHKOFFNLGXMVNJ-UHFFFAOYSA-N Didodecyl thiobispropanoate Chemical compound CCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCC GHKOFFNLGXMVNJ-UHFFFAOYSA-N 0.000 claims description 3
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 3
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims description 3
- PRWJPWSKLXYEPD-UHFFFAOYSA-N 4-[4,4-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butan-2-yl]-2-tert-butyl-5-methylphenol Chemical compound C=1C(C(C)(C)C)=C(O)C=C(C)C=1C(C)CC(C=1C(=CC(O)=C(C=1)C(C)(C)C)C)C1=CC(C(C)(C)C)=C(O)C=C1C PRWJPWSKLXYEPD-UHFFFAOYSA-N 0.000 claims description 2
- PWWSSIYVTQUJQQ-UHFFFAOYSA-N distearyl thiodipropionate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCCCCCCC PWWSSIYVTQUJQQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 8
- 238000001035 drying Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000005303 weighing Methods 0.000 description 7
- 238000005452 bending Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000010754 BS 2869 Class F Substances 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004981 biological liquid crystal Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- NICDRCVJGXLKSF-UHFFFAOYSA-N nitric acid;trihydrochloride Chemical compound Cl.Cl.Cl.O[N+]([O-])=O NICDRCVJGXLKSF-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 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
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/12—Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention discloses a kind of PTFE/LCP high polymer alloy and preparation method thereof.The high polymer alloy is made of the raw material of following parts by weight: 30-80 parts of liquid crystal polymer, 10-40 parts of polytetrafluoroethylene (PTFE), 10-30 parts of glass fibre, 1-5 parts of molybdenum disulfide, 2-8 parts of compatilizer, 0.1-0.5 parts of antioxidant.High polymer alloy prepared by the present invention excellent properties such as high, wear-resisting and heat-resisting with intensity.
Description
Technical field
The invention belongs to technical field of polymer materials more particularly to a kind of high-intensitive, wear-resisting PTFE/LCP macromolecule to close
Gold and preparation method thereof.
Background technique
Polytetrafluoroethylene (PTFE) (PTFE) has a series of excellent service performances, high temperature resistant: long-term use temperature 200-
260oC, it is low temperature resistant: -100oIt is still soft when C；It is corrosion-resistant: to be resistant to chloroazotic acid and all organic solvents；Weatherability: best in plastics
Aging life-span；High lubrication: there is the smallest coefficient of friction (0.04) in plastics；It is non-stick: to have the smallest in solid material
Surface tension is without adhering to any substance；Excellent electric property is ideal C class F insulating material F, one layer of energy of newspaper thickness
Stop the high pressure of 1500V；Dielectric constant and dielectric loss in wider frequency range is all very low, and breakdown voltage, volume
Resistivity and arc resistance are all higher.
The molecular backbone of liquid crystal polymer (LCP) molecule is firm, piles up between molecule closely, and the height in forming process
Orientation, so have linear expansion coefficient small, the low and very outstanding intensity of molding shrinkage and elasticity modulus and excellent resistance to
Hot, load deformation temperature with higher, some may be up to 340oC or more.LCP also has chemical-resistant resistance and air-tightness excellent
It is good, in addition, some liquid crystal polymers have the function of it is certain special, such as light guide liquid crystal polymer, functional liquid crystal polymer point
From film and biological liquid crystal polymer etc..General thermotropic liquid crystal polymer has preferable mobility, easy processing molding.Its at
Type product has the distinctive skin-core structure of liquid crystal polymer, and resin itself has fibre property, there is height in the molten state
Orientation, therefore fibre-reinforced effect can be played.Because it has high intensity, high rigidity, high temperature resistant, electrical insulating property etc. very excellent
It is good, it is used for the fields such as electronics, electrical, optical fiber, automobile and aerospace.Thermotropic liquid crystal polymer can also be made with a variety of plastics
Polymer blending material, liquid crystal polymer plays the role of fibre-reinforced in these intermingling materials, can greatly improve material
Intensity, rigidity and heat resistance etc..
Summary of the invention
The object of the present invention is to provide a kind of PTFE/LCP high polymer alloy and preparation method thereof, using polytetrafluoroethylene (PTFE) with
Liquid crystal polymer prepares high polymer alloy, while while glass fibre is added improves intensity, polytetrafluoroethylene (PTFE) and two sulphur are added
Change molybdenum improve wearability, prepares the excellent high molecular material of wear-resisting property, widened the application field of liquid crystal polymer.
Above-mentioned purpose is achieved through the following technical solutions:
A kind of PTFE/LCP high polymer alloy of the present invention, including following parts by weight of component: 30-80 parts of liquid crystal polymer, gather
10-40 parts of tetrafluoroethene, 10-30 parts of glass fibre, 1-5 parts of molybdenum disulfide, 2-8 parts of compatilizer, 0.1-0.5 parts of antioxidant.
The liquid crystal polymer is thermotropic liquid crystal polymer.
The glass fiber diameter is 12 ~ 23 μm.
The molybdenum disulfide granularity is 325-2500 mesh, preferably 1800-2300.
The compatilizer is POE-g-GMA, SEBS-g-GMA, POE-g-MAH, PP-g-MA, PP-g-AA, EAA, PS-g-
PMMA、PS-g-MAH、PS-b-PMMA、PS-b-PBA、 PE-g-ST、PP-g-ST、ABS-g-MAH、PP-g-MAH、EVA、
Any one or a few in SEBS, SEBS-g-MAH, PE-g-MAH, preferably SEBS-g-MAH.
The antioxidant is antioxidant 264, antioxidant 1076, antioxidant SP, antioxidant 246, antioxidant BBHT, antioxidant
54, antioxidant 703, antioxidant BHA, antioxidant 2246, antioxidant PL-440, antioxidant 2246-S, antioxidant 300, antioxidant
736, antioxidant BBM, antioxidant 1010, irgasfos 168, antioxidant 3114, antioxidant 3125, antioxidant 330, antioxidant CA,
Antioxidant TNP, antioxidant ODP, antioxidant DLTDP, any one or a few P, preferably antioxidant PL- in antioxidant DSTD
440。
Above-mentioned PTFE/LCP high polymer alloy and preparation method thereof, comprising the following steps:
(1) by liquid crystal polymer in 130-150o3-5h is dried in C, the liquid crystal polymer after being dried；
(2) by the liquid crystal polymer after being dried in step (1) and polytetrafluoroethylene (PTFE), molybdenum disulfide, compatilizer, antioxygen
Agent, carries out uniformly mixed by weight, obtains mixture；
(3) mixture in step (2) is added in double screw extruder by the main spout of double screw extruder, by glass
Glass fiber is added in double screw extruder from the side spout of double screw extruder, is made through double screw extruder melting extrusion
Grain.
Further, in step (3), extruder temperature are as follows: area's temperature 300~310oC, two area's temperature 310~
320oC, three area's temperature 310~320oC, four area's temperature 310~320oC, five area's temperature 320~340oC, six Qu Wendu
320~340oC, seven area's temperature 320~340oC, eight area's temperature 300~320oC, head 300~310oC。
Beneficial effects of the present invention:
It has high intensity, high rigidity, high temperature resistant, electrical insulating property etc. very excellent to LCP plastic material, be used for electronics, electrically,
The fields such as optical fiber, automobile and aerospace.In order to realize the high performance of LCP, it is allowed to can be applied to valve block, sealing ring etc. to resistance to
The field that mill property has higher requirements, polytetrafluoroethylene (PTFE) and molybdenum disulfide improve wearability is added in the present invention, and glass fibre is added
Intensity is improved, the excellent high molecular material of wear-resisting property is prepared, has widened the application field of liquid crystal polymer.
Specific embodiment
Those skilled in the art are more clearly understood and recognize to the application.Following specific embodiment is not answered in office
What it is understood or is construed to the claim of this application book to be claimed the limitation of range in degree.
A kind of PTFE/LCP high polymer alloy, including following parts by weight of component: 30-80 parts of liquid crystal polymer, polytetrafluoroethyl-ne
10-40 parts of alkene, 10-30 parts of glass fibre, 1-5 parts of molybdenum disulfide, 2-8 parts of compatilizer, 0.1-0.5 parts of antioxidant.
The PTFE/LCP high polymer alloy, the liquid crystal polymer are thermotropic liquid crystal polymer.
The PTFE/LCP high polymer alloy, the glass fiber diameter are 12 ~ 23 μm.
The PTFE/LCP high polymer alloy, the molybdenum disulfide granularity are 325-2500 mesh.
The PTFE/LCP high polymer alloy, the compatilizer be POE-g-GMA, SEBS-g-GMA, POE-g-MAH,
PP-g-MA、PP-g-AA、EAA、PS-g-PMMA、PS-g-MAH、PS-b-PMMA、PS-b-PBA、 PE-g-ST、PP-g-ST、
Any one or a few in ABS-g-MAH, PP-g-MAH, EVA, SEBS, SEBS-g-MAH, PE-g-MAH.
The PTFE/LCP high polymer alloy, the antioxidant are antioxidant 264, antioxidant 1076, antioxidant SP, resist
Oxygen agent 246, antioxidant BBHT, antioxidant 54, antioxidant 703, antioxidant BHA, antioxidant 2246, antioxidant 2246-S, antioxygen
Agent 300, antioxidant 736, antioxidant BBM, antioxidant 1010, antioxidant 3114, antioxidant 3125, antioxidant 330, antioxidant
Any one or a few in CA, antioxidant TNP, antioxidant ODP, antioxidant DLTDP or antioxidant DSTDP.
The preparation method of above-mentioned PTFE/LCP high polymer alloy, method includes the following steps:
(1) by liquid crystal polymer in 130-150o3-5h is dried in C, the liquid crystal polymer after being dried；
(2) by step 1 be dried after liquid crystal polymer and polytetrafluoroethylene (PTFE), molybdenum disulfide, compatilizer, antioxidant,
It carries out by weight uniformly mixed, obtains mixture；
(3) mixture obtained in step (2) is added in double screw extruder by the main spout of double screw extruder,
Glass fibre is added in double screw extruder from the side spout of double screw extruder, through double screw extruder melting extrusion
It is granulated.
The preparation method of the PTFE/LCP high polymer alloy, the extruder temperature are as follows: area's temperature 300~310
DEG C, two 310~320 DEG C of area's temperature, three 310~320 DEG C of area's temperature, four 310~320 DEG C of area's temperature, five area's temperature 320~340
DEG C, six 320~340 DEG C of area's temperature, seven 320~340 DEG C of area's temperature, eight 300~320 DEG C of area's temperature, 300~310 DEG C of head.
Illustrate method and effect of the invention below by way of specific embodiment:
Embodiment 1
By LCP 130oIt is dried 5h under C, LCP40 part after weighing drying process, 30 parts of PTFE, 2 parts of molybdenum disulfide,
It PP-g-MAH3 parts, 0.2 part of antioxidant PL-440, is mixed uniformly, is added to by the main spout of double screw extruder
In double screw extruder, 30 parts of glass fibre are added in double screw extruder from the side spout of double screw extruder, through double
Screw extruder melting extrusion is granulated, extruder temperature are as follows: area's temperature 300oC, two area's temperature 310oC, three area's temperature 310oC,
Four area's temperature 310oC, five area's temperature 320oC, six area's temperature 320oC, seven area's temperature 320oC, eight area's temperature 310oC, head
300oC.Results of property is as shown in table 1.
Embodiment 2
By LCP 140oIt is dried 4h under C, LCP50 part after weighing drying process, 25 parts of PTFE, 3 parts of molybdenum disulfide,
It 5 parts of POE-g-GMA, 0.4 part of antioxidant 1010, is mixed uniformly, is added to by the main spout of double screw extruder double
In screw extruder, 25 parts of glass fibre are added in double screw extruder from the side spout of double screw extruder, through double spiral shells
Bar extruder melting extrusion is granulated, extruder temperature are as follows: area's temperature 310oC, two area's temperature 320oC, three area's temperature 320oC, four
Area's temperature 320oC, five area's temperature 340oC, six area's temperature 340oC, seven area's temperature 340oC, eight area's temperature 320oC, head 300oC。
Results of property is as shown in table 1.
Embodiment 3
By LCP 150oIt is dried 3h under C, LCP60 part after weighing drying process, 20 parts of PTFE, molybdenum disulfide 4.5
Part, it 7 parts of SEBS-g-MAH, 0.3 part of antioxidant 330, is mixed uniformly, is added by the main spout of double screw extruder
Into double screw extruder, 20 parts of glass fibre are added in double screw extruder from the side spout of double screw extruder, warp
Double screw extruder melting extrusion is granulated, extruder temperature are as follows: area's temperature 300oC, two area's temperature 315oC, three Qu Wendu
315oC, four area's temperature 315oC, five area's temperature 330oC, six area's temperature 330oC, seven area's temperature 330oC, eight area's temperature 310oC, machine
First 300oC.Results of property is as shown in table 1.
Embodiment 4
By LCP 135oIt is dried 4h under C, LCP70 part after weighing drying process, 15 parts of PTFE, 3 parts of molybdenum disulfide,
It 6 parts of SEBS-g-MAH, 0.4 part of antioxidant PL-440, is mixed uniformly, is added by the main spout of double screw extruder
Into double screw extruder, 15 parts of glass fibre are added in double screw extruder from the side spout of double screw extruder, warp
Double screw extruder melting extrusion is granulated, extruder temperature are as follows: area's temperature 300oC, two area's temperature 310oC, three Qu Wendu
310oC, four area's temperature 310oC, five area's temperature 320oC, six area's temperature 320oC, seven area's temperature 320oC, eight area's temperature 310oC, machine
First 300oC.Results of property is as shown in table 1.
Embodiment 5
By LCP 135oIt is dried 4h under C, LCP80 part after weighing drying process, 10 parts of PTFE, 5 parts of molybdenum disulfide,
It PS-b-PMMA7 parts, DLTDP0.5 parts of antioxidant, is mixed uniformly, is added to by the main spout of double screw extruder double
In screw extruder, 10 parts of glass fibre are added in double screw extruder from the side spout of double screw extruder, through double spiral shells
Bar extruder melting extrusion is granulated, extruder temperature are as follows: area's temperature 305oC, two area's temperature 320oC, three area's temperature 320oC, four
Area's temperature 320oC, five area's temperature 340oC, six area's temperature 340oC, seven area's temperature 340oC, eight area's temperature 310oC, head 300oC。
Results of property is as shown in table 1.
Comparative example 1
By LCP 140oIt is dried 4h under C, LCP70 part after weighing drying process, 30 parts of PTFE, 3 parts of molybdenum disulfide,
It SEBS-g-MAH4 parts, 0.4 part of antioxidant PL-440, is mixed uniformly, is granulated by double screw extruder melting extrusion, squeeze
Out-of-machine temperature are as follows: area's temperature 300oC, two area's temperature 310oC, three area's temperature 310oC, four area's temperature 310oC, five Qu Wendu
320oC, six area's temperature 320oC, seven area's temperature 320oC, eight area's temperature 320oC, head 300oC.Results of property is as shown in table 1.
Comparative example 2
By LCP 150oIt is dried 3h under C, LCP70 part after weighing drying process, ABS-g-MAH3 parts, antioxidant
It 31140.3 parts, is mixed uniformly, is added in double screw extruder by the main spout of double screw extruder, glass fibers
30 parts of dimension is added in double screw extruder from the side spout of double screw extruder, is made through double screw extruder melting extrusion
Grain, extruder temperature are as follows: area's temperature 300oC, two area's temperature 310oC, three area's temperature 310oC, four area's temperature 310oC, five Qu Wen
Degree 320oC, six area's temperature 320oC, seven area's temperature 320oC, eight area's temperature 310oC, head 300oC.Results of property is as shown in table 1.
Performance test:
(1) tensile property is tested: being carried out according to the standard of ASTM D638, tensile speed 20mm/min.
(2) bending property is tested: being carried out according to the standard of ASTM D790, test speed 5mm/min.
(3) friction and wear behavior is tested: being carried out according to the standard of ASTM D1894.
The comparative example of the present invention of table 1 and embodiment performance test table
| Title | Tensile strength (MPa) | Bending strength (MPa) | Coefficient of friction |
| Comparative example 1 | 56 | 75 | 0.24 |
| Comparative example 2 | 132 | 174 | 0.39 |
| Embodiment 1 | 81 | 147 | 0.17 |
| Embodiment 2 | 92 | 154 | 0.19 |
| Embodiment 3 | 101 | 163 | 0.22 |
| Embodiment 4 | 114 | 171 | 0.26 |
| Embodiment 5 | 93 | 146 | 0.31 |
Conclusion:
By table 1, it can be concluded that, embodiment all has preferable comprehensive performance, and wherein embodiment 1 has lower with embodiment 2
Coefficient of friction, embodiment 3 and embodiment 4 have preferable comprehensive performance, and wherein embodiment 4 has higher compared with comparative example 1
Tensile strength and bending strength, coefficient of friction is slightly higher；4 tensile strength of embodiment and bending strength are lower than comparative example 2, friction system
Number is lower than the coefficient of friction of comparative example 2.By the way that polytetrafluoroethylene (PTFE) is added, the wear-resisting property of material, but mechanical property are helped to improve
It can be declined, the shortcomings that mechanical property reduces is added by the way that glass fibre is added to improve polytetrafluoroethylene (PTFE) in the present invention, obtains
High-intensitive, wear-resisting high molecule alloy material.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of PTFE/LCP high polymer alloy, which is characterized in that including following parts by weight of component: 30-80 parts of liquid crystal polymer,
10-40 parts of polytetrafluoroethylene (PTFE), 10-30 parts of glass fibre, 1-5 parts of molybdenum disulfide, 2-8 parts of compatilizer, 0.1-0.5 parts of antioxidant.
2. PTFE/LCP high polymer alloy according to claim 1, which is characterized in that the liquid crystal polymer is thermotropic
Liquid crystal polymer.
3. PTFE/LCP high polymer alloy according to claim 1, which is characterized in that the glass fiber diameter be 12 ~
23μm。
4. PTFE/LCP high polymer alloy according to claim 1, which is characterized in that the molybdenum disulfide granularity is 325-
2500 mesh.
5. PTFE/LCP high polymer alloy according to claim 1, which is characterized in that the compatilizer be POE-g-GMA,
SEBS-g-GMA、POE-g-MAH、PP-g-MA、PP-g-AA、EAA、PS-g-PMMA、PS-g-MAH、PS-b-PMMA、PS-b-
Appointing in PBA, PE-g-ST, PP-g-ST, ABS-g-MAH, PP-g-MAH, EVA, SEBS, SEBS-g-MAH, PE-g-MAH
Meaning is one or more of.
6. PTFE/LCP high polymer alloy according to claim 1, which is characterized in that the antioxidant be antioxidant 264,
Antioxidant 1076, antioxidant SP, antioxidant 246, antioxidant BBHT, antioxidant 54, antioxidant 703, antioxidant BHA, antioxidant
2246, antioxidant 2246-S, antioxidant 300, antioxidant 736, antioxidant BBM, antioxidant 1010, antioxidant 3114, antioxidant
3125, any in antioxidant 330, antioxidant CA, antioxidant TNP, antioxidant ODP, antioxidant DLTDP or antioxidant DSTDP
It is one or more of.
7. the preparation method of PTFE/LCP high polymer alloy described in a kind of one of claim 1-6, which is characterized in that this method
The following steps are included:
(1) by liquid crystal polymer in 130-150o3-5h is dried in C, the liquid crystal polymer after being dried；
(2) by step 1 be dried after liquid crystal polymer and polytetrafluoroethylene (PTFE), molybdenum disulfide, compatilizer, antioxidant,
It carries out by weight uniformly mixed, obtains mixture；
(3) mixture obtained in step (2) is added in double screw extruder by the main spout of double screw extruder,
Glass fibre is added in double screw extruder from the side spout of double screw extruder, through double screw extruder melting extrusion
It is granulated.
8. the preparation method of PTFE/LCP high polymer alloy according to claim 7, which is characterized in that the extruder temperature
Degree are as follows: 300~310 DEG C of area's temperature, two 310~320 DEG C of area's temperature, three 310~320 DEG C of area's temperature, four area's temperature 310~
320 DEG C, five 320~340 DEG C of area's temperature, six 320~340 DEG C of area's temperature, seven 320~340 DEG C of area's temperature, eight area's temperature 300~
320 DEG C, 300~310 DEG C of head.
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