CN109627531A - A kind of valve gasket seal not easy to crack - Google Patents
A kind of valve gasket seal not easy to crack Download PDFInfo
- Publication number
- CN109627531A CN109627531A CN201811489174.3A CN201811489174A CN109627531A CN 109627531 A CN109627531 A CN 109627531A CN 201811489174 A CN201811489174 A CN 201811489174A CN 109627531 A CN109627531 A CN 109627531A
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- parts
- easy
- crack
- ptfe
- polytetrafluoroethylene
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- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 64
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 64
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 51
- 150000001875 compounds Chemical class 0.000 claims abstract description 28
- 230000015556 catabolic process Effects 0.000 claims abstract description 25
- 238000006731 degradation reaction Methods 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 claims abstract description 18
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000012856 packing Methods 0.000 claims abstract description 15
- 239000004014 plasticizer Substances 0.000 claims abstract description 15
- 238000005728 strengthening Methods 0.000 claims abstract description 15
- 239000004698 Polyethylene Substances 0.000 claims abstract description 14
- 229920000573 polyethylene Polymers 0.000 claims abstract description 14
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 10
- 229920006361 Polyflon Polymers 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 229920001084 poly(chloroprene) Polymers 0.000 claims abstract description 10
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 10
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 9
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229960002447 thiram Drugs 0.000 claims abstract description 9
- 238000007872 degassing Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000011787 zinc oxide Substances 0.000 claims abstract description 8
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 7
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 7
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 claims abstract description 3
- SBRXLTRZCJVAPH-UHFFFAOYSA-N ethyl(trimethoxy)silane Chemical compound CC[Si](OC)(OC)OC SBRXLTRZCJVAPH-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 241000276489 Merlangius merlangus Species 0.000 claims description 10
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 10
- 229910000278 bentonite Inorganic materials 0.000 claims description 10
- 239000000440 bentonite Substances 0.000 claims description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 10
- 239000002041 carbon nanotube Substances 0.000 claims description 10
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 10
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 10
- 239000010881 fly ash Substances 0.000 claims description 10
- 239000004209 oxidized polyethylene wax Substances 0.000 claims description 10
- 235000013873 oxidized polyethylene wax Nutrition 0.000 claims description 10
- 239000011297 pine tar Substances 0.000 claims description 10
- 229940068124 pine tar Drugs 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 7
- 240000000491 Corchorus aestuans Species 0.000 claims 1
- 235000011777 Corchorus aestuans Nutrition 0.000 claims 1
- 235000010862 Corchorus capsularis Nutrition 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 230000000593 degrading effect Effects 0.000 abstract description 11
- 239000000203 mixture Substances 0.000 description 8
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 5
- GTTSNKDQDACYLV-UHFFFAOYSA-N Trihydroxybutane Chemical compound CCCC(O)(O)O GTTSNKDQDACYLV-UHFFFAOYSA-N 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- JMWGZSWSTCGVLX-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;2-methylprop-2-enoic acid Chemical compound CC(=C)C(O)=O.CC(=C)C(O)=O.CC(=C)C(O)=O.CCC(CO)(CO)CO JMWGZSWSTCGVLX-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229940113165 trimethylolpropane Drugs 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000004804 winding Methods 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
- C08L11/00—Compositions of homopolymers or copolymers of chloroprene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of valve gasket seals not easy to crack, its raw material includes: 80-120 parts of neoprene by weight, 40-60 parts of butadiene rubber, β-(3,4- epoxy cyclohexyl) 1-2 parts of ethyl trimethoxy silane, 80-100 parts of packing strengthening agent, 2-4 parts of zinc oxide, 3-4 parts of polytetrafluoroethylene (PTFE) compound, 5-10 parts of plasticizer, 1.5-2.5 parts of tert-butyl hydroperoxide of degradation, 1-1.6 parts of tetramethylthiuram disulfide, 0.6-1.8 parts of trimethylol-propane trimethacrylate, 1.5-2.5 parts of antioxidant D FC-34,1-1.6 parts of anti-aging agent ODA.Polytetrafluoroethylene (PTFE) compound of degrading is prepared using following technique: by polyflon irradiation-induced degradation, air draft degasification is crushed, and is added polyethylene wax and is stirred to get degradation polytetrafluoroethylene (PTFE) compound.Valve proposed by the present invention gasket seal not easy to crack, it is not easy to crack, it is wear-resistant.
Description
Technical field
The present invention relates to sealing gasket for valve technical field more particularly to a kind of valve gasket seals not easy to crack.
Background technique
Valve is the control unit in fluid delivery system, has cut-off, adjusting, water conservancy diversion, prevents adverse current, pressure stabilizing, shunting
Or the functions such as overflow pressure relief, valve can be used for controlling empty gas and water, steam, various corrosive medias, mud, oil product, liquid metal
With the flowing of the various types fluid such as radiating medium, sealing performance is the important performance of valve, can be to liquid or gas
Separated, therefore, valve using very extensive.
Currently, easily there is problem of Cracking, are easy to appear leakage, influence to seal in some valve gasket seals in the market
Effect, security performance is low, affects the service life of valve.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of valve gasket seal not easy to crack, property
Matter is balanced, not easy to crack, wear-resistant.
A kind of valve gasket seal not easy to crack proposed by the present invention, raw material includes: neoprene 80- by weight
120 parts, 40-60 parts of butadiene rubber, 1-2 parts of ethyl trimethoxy silane of β-(3,4- epoxy cyclohexyl), packing strengthening agent 80-
It 100 parts, 2-4 parts of zinc oxide, degrades 3-4 parts of polytetrafluoroethylene (PTFE) compound, 5-10 parts of plasticizer, tert-butyl hydroperoxide 1.5-
2.5 parts, 1-1.6 parts of tetramethylthiuram disulfide, 0.6-1.8 parts of trimethylol-propane trimethacrylate, anti-aging agent
1.5-2.5 parts of DFC-34,1-1.6 parts of anti-aging agent ODA.
Preferably, packing strengthening agent includes: tossa, powdered whiting, bentonite, carbon nanotube, flyash.
Preferably, tossa, powdered whiting, bentonite, carbon nanotube, the weight ratio of flyash are 15-25:10-
20:25-35:20-40:25-45.
Preferably, plasticizer includes: dibutyl tin dilaurate, pine tar, oxidized polyethylene wax.
Preferably, dibutyl tin dilaurate, pine tar, oxidized polyethylene wax weight ratio be 2-4:1-2:2-4.
Preferably, degradation polytetrafluoroethylene (PTFE) compound is using the preparation of following technique: by polyflon irradiation-induced degradation,
Air draft degasification crushes, and adds polyethylene wax and stirs to get degradation polytetrafluoroethylene (PTFE) compound.
Preferably, in the preparation process of polytetrafluoroethylene (PTFE) compound that degrades, irradiation dose 0.8-0.86MGy.
Preferably, in the preparation process of polytetrafluoroethylene (PTFE) compound that degrades, being crushed to partial size is 4-8 μm.
Preferably, in the preparation process of polytetrafluoroethylene (PTFE) compound that degrades, the weight of polyflon, polyethylene wax
Than for 20-30:30-40.
The present invention uses tossa to compound with powdered whiting, bentonite, carbon nanotube, flyash as filler material,
It degrades under the cooperation of polytetrafluoroethylene (PTFE) compound, mutual degree of scatter is high, and can effectively be coated on filler material surface, has
Reinforcing filler is imitated in neoprene, the mixing uniformity of butadiene rubber；Polytetrafluoroethylene (PTFE) compound of degrading simultaneously cooperates
Dibutyl tin dilaurate, pine tar, oxidized polyethylene wax effect, can promote the molecule interchain of neoprene, butadiene rubber
Winding, mutual binding force is strong, good toughness, while using tert-butyl hydroperoxide, tetramethylthiuram disulfide, trihydroxy methyl
Propane trimethyl acrylic ester collaboration vulcanization, solidification crosslinking keep the present invention not easy to crack, wear-resistant.
In degradation polytetrafluoroethylene (PTFE) compound of the invention, polytetrafluoroethylene (PTFE) is ground after irradiation-induced degradation, forms surface
The molecule of active group can be wrapped in polyethylene wax surface, and since the density of polyethylene wax is low, good dispersion gathers
Tetrafluoroethene can not be settled by very stable be suspended in solution system of characteristic of polyethylene wax, and polyethylene wax can be borrowed
Help polytetrafluoroethylene (PTFE) that there is high rigidity, lubricating and wear-resisting and chemical inertness.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of valve gasket seal not easy to crack, raw material includes: neoprene 80kg, butadiene rubber 60kg, β-
(3,4- epoxy cyclohexyl) ethyl trimethoxy silane 1kg, packing strengthening agent 100kg, zinc oxide 2kg, polytetrafluoroethylene (PTFE) of degrading
Compound 4kg, plasticizer 5kg, tert-butyl hydroperoxide 2.5kg, tetramethylthiuram disulfide 1kg, trimethylolpropane tris
Methacrylate 1.8kg, antioxidant D FC-34 1.5kg, anti-aging agent ODA 1.6kg.
Packing strengthening agent is 15 by tossa, powdered whiting, bentonite, carbon nanotube, flyash by weight:
20:25:40:25 composition.Plasticizer is 4:1:4 group by dibutyl tin dilaurate, pine tar, oxidized polyethylene wax by weight
At.
Polytetrafluoroethylene (PTFE) compound of degrading is prepared using following technique: by 20kg polyflon irradiation-induced degradation, spoke
It is 0.86MGy according to dosage, air draft degasification, being crushed to partial size is 4-8 μm, adds 30kg polyethylene wax stirring 65min, stirring speed
Degree is 800r/min, obtains degradation polytetrafluoroethylene (PTFE) compound.
Embodiment 2
A kind of valve gasket seal not easy to crack, raw material includes: neoprene 120kg, butadiene rubber 40kg, β-
(3,4- epoxy cyclohexyl) ethyl trimethoxy silane 2kg, packing strengthening agent 80kg, zinc oxide 4kg, degradation polytetrafluoroethylene (PTFE) are multiple
Close object 3kg, plasticizer 10kg, tert-butyl hydroperoxide 1.5kg, tetramethylthiuram disulfide 1.6kg, trimethylolpropane tris
Methacrylate 0.6kg, antioxidant D FC-34 2.5kg, anti-aging agent ODA 1kg.
Packing strengthening agent is 25 by tossa, powdered whiting, bentonite, carbon nanotube, flyash by weight:
10:35:20:45 composition.Plasticizer is 2:2:2 group by dibutyl tin dilaurate, pine tar, oxidized polyethylene wax by weight
At.
Polytetrafluoroethylene (PTFE) compound of degrading is prepared using following technique: by 30kg polyflon irradiation-induced degradation, spoke
It is 0.8MGy according to dosage, air draft degasification, being crushed to partial size is 4-8 μm, adds 40kg polyethylene wax stirring 45min, stirring speed
Degree is 1000r/min, obtains degradation polytetrafluoroethylene (PTFE) compound.
Embodiment 3
A kind of valve gasket seal not easy to crack, raw material includes: neoprene 90kg, butadiene rubber 55kg, β-
(3,4- epoxy cyclohexyl) ethyl trimethoxy silane 1.3kg, packing strengthening agent 95kg, zinc oxide 2.5kg, polytetrafluoroethyl-ne of degrading
Alkene compound 3.7kg, plasticizer 6kg, tert-butyl hydroperoxide 2.2kg, tetramethylthiuram disulfide 1.2kg, trihydroxy methyl
Propane trimethyl acrylic ester 1.4kg, antioxidant D FC-34 1.8kg, anti-aging agent ODA 1.4kg.
Packing strengthening agent is 18 by tossa, powdered whiting, bentonite, carbon nanotube, flyash by weight:
18:28:35:30 composition.Plasticizer is 3.5 by dibutyl tin dilaurate, pine tar, oxidized polyethylene wax by weight:
1.3:3.5 composition.
Polytetrafluoroethylene (PTFE) compound of degrading is prepared using following technique: by 22kg polyflon irradiation-induced degradation, spoke
It is 0.84MGy according to dosage, air draft degasification, being crushed to partial size is 4-8 μm, adds 33kg polyethylene wax stirring 60min, stirring speed
Degree is 850r/min, obtains degradation polytetrafluoroethylene (PTFE) compound.
Embodiment 4
A kind of valve gasket seal not easy to crack, raw material includes: neoprene 110kg, butadiene rubber 45kg, β-
(3,4- epoxy cyclohexyl) ethyl trimethoxy silane 1.7kg, packing strengthening agent 85kg, zinc oxide 3.5kg, polytetrafluoroethyl-ne of degrading
Alkene compound 3.3kg, plasticizer 8kg, tert-butyl hydroperoxide 1.8kg, tetramethylthiuram disulfide 1.4kg, trihydroxy methyl
Propane trimethyl acrylic ester 1kg, antioxidant D FC-34 2.2kg, anti-aging agent ODA 1.2kg.
Packing strengthening agent is 22 by tossa, powdered whiting, bentonite, carbon nanotube, flyash by weight:
12:32:25:40 composition.Plasticizer is 2.5 by dibutyl tin dilaurate, pine tar, oxidized polyethylene wax by weight:
1.7:2.5 composition.
Polytetrafluoroethylene (PTFE) compound of degrading is prepared using following technique: by 28kg polyflon irradiation-induced degradation, spoke
It is 0.82MGy according to dosage, air draft degasification, being crushed to partial size is 4-8 μm, adds 37kg polyethylene wax stirring 50min, stirring speed
Degree is 950r/min, obtains degradation polytetrafluoroethylene (PTFE) compound.
Embodiment 5
A kind of valve gasket seal not easy to crack, raw material includes: neoprene 100kg, butadiene rubber 50kg, β-
(3,4- epoxy cyclohexyl) ethyl trimethoxy silane 1.5kg, packing strengthening agent 90kg, zinc oxide 3kg, polytetrafluoroethylene (PTFE) of degrading
Compound 3.5kg, plasticizer 7kg, tert-butyl hydroperoxide 2kg, tetramethylthiuram disulfide 1.3kg, trimethylolpropane
Trimethyl acrylic ester 1.2kg, antioxidant D FC-34 2kg, anti-aging agent ODA 1.3kg.
Packing strengthening agent is 20 by tossa, powdered whiting, bentonite, carbon nanotube, flyash by weight:
15:30:30:35 composition.Plasticizer is 3:1.5:3 by dibutyl tin dilaurate, pine tar, oxidized polyethylene wax by weight
Composition.
Polytetrafluoroethylene (PTFE) compound of degrading is prepared using following technique: by 25kg polyflon irradiation-induced degradation, spoke
It is 0.83MGy according to dosage, air draft degasification, being crushed to partial size is 4-8 μm, adds 35kg polyethylene wax stirring 55min, stirring speed
Degree is 900r/min, obtains degradation polytetrafluoroethylene (PTFE) compound.
5 gained valve of embodiment arbitrarily can be bent and be distorted with gasket seal not easy to crack, do not cracked, fully met sealing
Gasket requirement (the especially resistance to torsion requirement of low temperature), impact elasticity 56%, Akron abrasion 0.55%, elongation are
468%, tensile strength 34.1MPa, elongation percentage 765%.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of valve gasket seal not easy to crack, which is characterized in that its raw material includes: neoprene 80-120 by weight
Part, 40-60 parts of butadiene rubber, 1-2 parts of ethyl trimethoxy silane of β-(3,4- epoxy cyclohexyl), packing strengthening agent 80-100
Part, it 2-4 parts of zinc oxide, degrades 3-4 parts of polytetrafluoroethylene (PTFE) compound, 5-10 parts of plasticizer, tert-butyl hydroperoxide 1.5-2.5
Part, 1-1.6 parts of tetramethylthiuram disulfide, 0.6-1.8 parts of trimethylol-propane trimethacrylate, antioxidant D FC-34
1.5-2.5 part, ODA1-1.6 parts of anti-aging agent.
2. valve gasket seal not easy to crack according to claim 1, which is characterized in that packing strengthening agent includes: jute
Fiber, powdered whiting, bentonite, carbon nanotube, flyash.
3. according to claim 2 valve use gasket seal not easy to crack, which is characterized in that tossa, powdered whiting,
Bentonite, carbon nanotube, the weight ratio of flyash are 15-25:10-20:25-35:20-40:25-45.
4. any one of -3 valve gasket seal not easy to crack according to claim 1, which is characterized in that plasticizer includes:
Dibutyl tin dilaurate, pine tar, oxidized polyethylene wax.
5. valve gasket seal not easy to crack according to claim 4, which is characterized in that dibutyl tin dilaurate, pine
Tar, oxidized polyethylene wax weight ratio be 2-4:1-2:2-4.
6. valve according to claim 4 or 5 gasket seal not easy to crack, which is characterized in that degradation polytetrafluoroethylene (PTFE) is multiple
Close object to prepare using following technique: by polyflon irradiation-induced degradation, air draft degasification crushes, adds polyethylene wax and stir
It mixes to obtain degradation polytetrafluoroethylene (PTFE) compound.
7. valve gasket seal not easy to crack according to claim 6, which is characterized in that degradation polytetrafluoroethylene (PTFE) compound
Preparation process in, irradiation dose 0.8-0.86MGy.
8. the gasket seal not easy to crack of valve described according to claim 6 or 7, which is characterized in that degradation polytetrafluoroethylene (PTFE) is multiple
In the preparation process for closing object, being crushed to partial size is 4-8 μm.
9. according to any one of claim 6-8 valve gasket seal not easy to crack, which is characterized in that degradation polytetrafluoroethyl-ne
In the preparation process of alkene compound, polyflon, polyethylene wax weight ratio be 20-30:30-40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811489174.3A CN109627531B (en) | 2018-12-06 | 2018-12-06 | Sealing gasket for valve without cracking easily |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811489174.3A CN109627531B (en) | 2018-12-06 | 2018-12-06 | Sealing gasket for valve without cracking easily |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109627531A true CN109627531A (en) | 2019-04-16 |
| CN109627531B CN109627531B (en) | 2021-04-20 |
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| CN201811489174.3A Expired - Fee Related CN109627531B (en) | 2018-12-06 | 2018-12-06 | Sealing gasket for valve without cracking easily |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101426880A (en) * | 2005-03-17 | 2009-05-06 | 陶氏环球技术公司 | Cap liners, closures and gaskets from multi-block polymers |
| CN101580606A (en) * | 2009-06-08 | 2009-11-18 | 无锡市华美电缆有限公司 | Cable jacket rubber and preparation method |
| CN102212221A (en) * | 2010-04-06 | 2011-10-12 | 苏州诺升功能高分子材料有限公司 | Polytetrafluoroethylene-modified polyethylene wax with core-shell structure and preparation process thereof |
| CN102993517A (en) * | 2012-11-01 | 2013-03-27 | 安徽荣达阀门有限公司 | Chloroprene rubber gasket with high abrasion resistance and preparation method thereof |
-
2018
- 2018-12-06 CN CN201811489174.3A patent/CN109627531B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101426880A (en) * | 2005-03-17 | 2009-05-06 | 陶氏环球技术公司 | Cap liners, closures and gaskets from multi-block polymers |
| CN101580606A (en) * | 2009-06-08 | 2009-11-18 | 无锡市华美电缆有限公司 | Cable jacket rubber and preparation method |
| CN102212221A (en) * | 2010-04-06 | 2011-10-12 | 苏州诺升功能高分子材料有限公司 | Polytetrafluoroethylene-modified polyethylene wax with core-shell structure and preparation process thereof |
| CN102993517A (en) * | 2012-11-01 | 2013-03-27 | 安徽荣达阀门有限公司 | Chloroprene rubber gasket with high abrasion resistance and preparation method thereof |
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| CN109627531B (en) | 2021-04-20 |
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