CN104832704A - Limiting element, one-way valve, composition, elastomer material, and grafting graphite and preparation method thereof - Google Patents
Limiting element, one-way valve, composition, elastomer material, and grafting graphite and preparation method thereof Download PDFInfo
- Publication number
- CN104832704A CN104832704A CN201510158765.2A CN201510158765A CN104832704A CN 104832704 A CN104832704 A CN 104832704A CN 201510158765 A CN201510158765 A CN 201510158765A CN 104832704 A CN104832704 A CN 104832704A
- Authority
- CN
- China
- Prior art keywords
- graphite
- way valve
- grafting
- elastomer layer
- grafted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 191
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 191
- 239000010439 graphite Substances 0.000 title claims abstract description 191
- 229920001971 elastomer Polymers 0.000 title claims abstract description 140
- 239000000806 elastomer Substances 0.000 title claims abstract description 125
- 239000000203 mixture Substances 0.000 title claims abstract description 77
- 239000000463 material Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 98
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims abstract description 81
- 229920001577 copolymer Chemical group 0.000 claims abstract description 41
- 238000013016 damping Methods 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 9
- 239000013536 elastomeric material Substances 0.000 claims description 98
- 239000008187 granular material Substances 0.000 claims description 88
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 40
- 230000033001 locomotion Effects 0.000 claims description 39
- 239000011159 matrix material Substances 0.000 claims description 39
- 239000005060 rubber Substances 0.000 claims description 15
- 239000003431 cross linking reagent Substances 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 239000000725 suspension Substances 0.000 claims description 11
- 239000007800 oxidant agent Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- QOSSAOTZNIDXMA-UHFFFAOYSA-N Dicylcohexylcarbodiimide Chemical compound C1CCCCC1N=C=NC1CCCCC1 QOSSAOTZNIDXMA-UHFFFAOYSA-N 0.000 claims description 7
- ODLMAHJVESYWTB-UHFFFAOYSA-N propylbenzene Chemical compound CCCC1=CC=CC=C1 ODLMAHJVESYWTB-UHFFFAOYSA-N 0.000 claims description 6
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 5
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 5
- 238000005984 hydrogenation reaction Methods 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 229920000098 polyolefin Polymers 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical class [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 150000002978 peroxides Chemical class 0.000 claims description 2
- 229920001568 phenolic resin Polymers 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920006342 thermoplastic vulcanizate Polymers 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 30
- 239000003507 refrigerant Substances 0.000 abstract description 20
- 239000012530 fluid Substances 0.000 abstract description 19
- 238000004132 cross linking Methods 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 140
- 230000035882 stress Effects 0.000 description 33
- 238000012360 testing method Methods 0.000 description 29
- 238000000034 method Methods 0.000 description 21
- 230000003712 anti-aging effect Effects 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- 239000003921 oil Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000004088 simulation Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 9
- 239000002994 raw material Substances 0.000 description 7
- -1 as PAUR Substances 0.000 description 6
- 239000000872 buffer Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000000306 component Substances 0.000 description 5
- 238000005187 foaming Methods 0.000 description 5
- 125000000524 functional group Chemical group 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000004342 Benzoyl peroxide Substances 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 4
- 229910000639 Spring steel Inorganic materials 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 4
- 239000010960 cold rolled steel Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- 238000012876 topography Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000001467 acupuncture Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005987 sulfurization reaction Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000006173 Good's buffer Substances 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 101100412856 Mus musculus Rhod gene Proteins 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 235000003283 Pachira macrocarpa Nutrition 0.000 description 1
- 229920006169 Perfluoroelastomer Polymers 0.000 description 1
- 229920001774 Perfluoroether Polymers 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical group O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 240000001085 Trapa natans Species 0.000 description 1
- 235000014364 Trapa natans Nutrition 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 235000009165 saligot Nutrition 0.000 description 1
- 229920006012 semi-aromatic polyamide Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical compound [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 229960002447 thiram Drugs 0.000 description 1
- KNXVOGGZOFOROK-UHFFFAOYSA-N trimagnesium;dioxido(oxo)silane;hydroxy-oxido-oxosilane Chemical compound [Mg+2].[Mg+2].[Mg+2].O[Si]([O-])=O.O[Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O KNXVOGGZOFOROK-UHFFFAOYSA-N 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- BOXSVZNGTQTENJ-UHFFFAOYSA-L zinc dibutyldithiocarbamate Chemical compound [Zn+2].CCCCN(C([S-])=S)CCCC.CCCCN(C([S-])=S)CCCC BOXSVZNGTQTENJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L15/00—Compositions of rubber derivatives
- C08L15/005—Hydrogenated nitrile rubber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/16—Check valves with flexible valve members with tongue-shaped laminae
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- 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)
- Compressor (AREA)
Abstract
The invention provides a limiting element, a one-way valve, a composition, an elastomer material, and grafting graphite and a preparation method thereof, and belongs to the technical field of vibration reduction of one-way valves. The limiting element for the one-way valve is arranged at one end of a moving element of the one-way valve to limit an opening position of the moving element; the limiting element is provided with an elastomer layer at one side contacted with the moving element; and the elastomer layer is made of the elastomer material. The one-way valve comprises the limiting element, and is low in noise, long in service life and high in fluid flowing speed. The elastomer material is formed by crosslinking the composition; the composition comprises nitrile rubbers and the grafting graphite; the grafting graphite comprises graphite particles and grafting groups grafted on the graphite particles; and the grafting groups comprise butadiene and acrylonitrile copolymer groups. The elastomer material has good resistance to oil and refrigerant, and has excellent dynamic ageing resistance and vibration damping performance.
Description
Technical field
The invention belongs to one-way valve antivibration area, be specifically related to a kind of limit element, one-way valve, composition, elastomeric material, grafting graphite and preparation method thereof.
Background technique
Compressor is the core component of the chiller plant such as air-conditioning, refrigerator, for compressing refrigerant (Refrigerant) gas.Within the compressor, one-way valve is one of vitals, and one-way valve only allows one-directional fluid flow, to realize above-mentioned compression process.
As shown in Figure 1 and Figure 2, it comprises valve body 1, valve block 3, limit element 2 (snubber) to the one-way valve structures used in a kind of compressor.
Wherein, valve body 1 is provided with valve opening 11, and valve opening 11 one end open is on valve body 1 surface.
Valve block 3 can for the strip thin slice be made up of high cycle fatigue steel (as spring steel), the fixing part of its one end is connected to valve body 1 on the surface, and the motion portion of the other end then can to-and-fro motion between the position (closed position) blocking valve opening 11 opening and the position (open position) leaving valve body 1 surface.When upwards being flowed from the below of the valve body 1 Fig. 2 by the fluid compressed, valve block 3 can back down and flow out by fluid; And when fluid will flow downward above valve body 1, valve block 3 can be pressed in the closed position on valve body 1 surface by hydrodynamic pressure, block valve opening 11, fluid cannot flow through, thus realizes the function of " one-way flow ".
Limit element 2 comprises and is positioned at the limited part (limit element 2 remaining part can be connected to valve block 3 fixing part on) of valve block 3 motion portion away from valve body 1 side, pointing on the direction in motion portion from the fixing part of valve block 3, distance between limited part and valve body 1 surface increases gradually, and namely the limited part of limit element 2 is " tiltings " gradually.The effect of limit element 2 it " is blocked " when valve block 3 is opened, thus limit the ultimate range that valve block 3 leaves valve body 1, namely limiting the open position of valve block 3, damaging because being out of shape excessive to avoid valve block 3, and ensure that valve block 3 can get back to closed position rapidly, raise the efficiency.
At present, the frequency of okperation of chiller plant compressor, usually between 20Hz to 100Hz, this means that valve block wherein at least wants switch 20 times within a second, and each switch middle valve plate all will impinge upon on limit element.And shock can cause larger noise (in fact this noise is noise source maximum in compressor) on the one hand; On the other hand, during shock, valve block can produce larger stress, thus reduce its working life; Simultaneously, for avoiding valve block to damage, therefore the ultimate range between limit element and valve body surface can not be too large, and namely the maximum opening degree (" aperture " or " lift " also referred to as valve block) of valve block can not be excessive, thus have impact on the flow velocity of refrigerant, reduce the efficiency of compressor.
Summary of the invention
An object of the present invention is to provide a kind of limit element for one-way valve, this limit element can impact effectively suffered by kicking motion element (as valve block), thus reduction noise, extend motor element working life, improve the aperture of motor element, strengthen the rate of flow of fluid of one-way valve, improve compressor efficiency.
This limit element for one-way valve for being arranged on motor element one end of one-way valve, thus limits the open position of described motor element, wherein,
Described limit element arranges elastomer layer in the side for contacting with described motor element, and described elastomer layer is made up of elastomeric material.
Wherein, preferably, above-mentioned elastomeric material is preferably cross-linked to form by composition, and described composition comprises: nitrile butadiene rubber (preferred hydrogenated nitrile-butadiene rubber); Grafting graphite, it comprises graphite granule and is grafted on the grafted moiety on described graphite granule, and described grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
Wherein, preferably, one-way valve is preferably for the one-way valve in compressor.
Another order of the present invention is to provide the limit element for compressor one-way valve, and it for being arranged on valve block one end of compressor one-way valve, thus limits the open position of described valve block, wherein,
Described limit element arranges elastomer layer in the side for contacting with described valve block, and described elastomer layer is made up of elastomeric material, and described elastomeric material is cross-linked to form by composition, and described composition comprises:
Nitrile butadiene rubber;
Grafting graphite, it comprises graphite granule and is grafted on the grafted moiety on described graphite granule, and described grafted moiety comprises the copolymer group of butadiene and acrylonitrile;
And
In described composition, the weight percentage of nitrile butadiene rubber is 28% to 60%;
In described composition, the weight percentage of grafting graphite is 2% to 12%;
In described grafting graphite, the weight of relatively described graphite granule, the part by weight of described grafted moiety is 6% to 20%.
Wherein, preferably, the thickness of described elastomer layer is at 0.1 millimeter to 5 millimeters;
Described valve block comprises the fixing part on the valve body for being connected to one-way valve, and carries out the motion portion that moves for relative valve body;
Described limit element comprises the limited part of the open position for limiting described valve block, and it is convex globoidal that described limited part is used for towards the surface of described valve block side; When described limit element is located in described one-way valve, point on the direction in motion portion at the fixing part from described valve block, the curvature of described convex globoidal is 1/72 millimeter/mono-to 1/172 millimeter/mono-.
Another object of the present invention is to provide a kind of one-way valve using above-mentioned limit element.This one-way valve comprises:
There is the valve body of valve opening;
Be arranged on the motor element on valve body one end, for moving between the closed position closing described valve opening and the open position leaving described valve opening;
Be arranged on the above-mentioned limit element on motor element one end, for limiting the open position of described motor element, and described limit element arranges elastomer layer in the side for contacting with described motor element, and described elastomer layer is made up of elastomeric material.
Wherein, this one-way valve is preferably for the one-way valve in compressor.
Wherein, above-mentioned elastomeric material is preferably cross-linked to form by composition, and described composition comprises: nitrile butadiene rubber (preferred hydrogenated nitrile-butadiene rubber); Grafting graphite, it comprises graphite granule and is grafted on the grafted moiety on described graphite granule, and described grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
Another object of the present invention is to provide a kind of grafting graphite, and it is one of the raw material for the preparation of above-mentioned elastomeric material.
This grafting graphite comprises graphite granule and is grafted on the grafted moiety on described graphite granule, and described grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
Another object of the present invention is to provide a kind of preparation method of above-mentioned grafting graphite, and it comprises:
Carry out functionalized to graphite granule;
Be grafted on described graphite granule by grafted moiety, obtain grafting graphite, wherein, described grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
Another object of the present invention is to provide a kind of composition, and it can be used for forming above-mentioned elastomeric material, comprising:
Nitrile butadiene rubber (preferred hydrogenated nitrile-butadiene rubber);
Above-mentioned grafting graphite, it comprises graphite granule and is grafted on the grafted moiety on described graphite granule, and described grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
Another object of the present invention is to provide a kind of elastomeric material, it is except having good mechanical property, to oil and refrigerant, also there is good resistance (ageing resistance), and there is good dynamic aging quality resistance, therefore be particularly suitable for being used as the elastomer layer in compressor one-way valve.
This elastomeric material is cross-linked to form by above-mentioned composition, and described composition comprises:
Nitrile butadiene rubber (preferred hydrogenated nitrile-butadiene rubber);
Grafting graphite, it comprises graphite granule and is grafted on the grafted moiety on described graphite granule, and described grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing a kind of compressor one-way valve;
Fig. 2 is the cross-sectional view of existing a kind of compressor one-way valve;
Fig. 3 is the structural representation of a kind of compressor one-way valve of embodiments of the invention;
Fig. 4 is the cross-sectional view of a kind of compressor one-way valve of embodiments of the invention;
Fig. 5 is the photo of the elastomer layer in a kind of compressor one-way valve of embodiments of the invention;
Fig. 6 is the cross-sectional view of the another kind of compressor one-way valve of embodiments of the invention;
Fig. 7 is the cross-sectional view of the another kind of compressor one-way valve of embodiments of the invention;
Fig. 8 is transmission electron microscope (TEM) photo of the graphite granule in the composition of embodiments of the invention;
The simulation distribution figure of the maximum stress of Fig. 9 suffered by each position of valve block of a kind of one-way valve existing in the cycle of motion;
The simulation distribution figure of the maximum stress of Figure 10 suffered by each position of valve block of a kind of one-way valve of embodiments of the invention in the cycle of motion;
Figure 11 is the simulation drawing of the Vibration Condition of the valve block of existing a kind of one-way valve in the cycle of motion;
Figure 12 is the simulation drawing of the Vibration Condition of the valve block of a kind of one-way valve of embodiments of the invention in the cycle of motion;
Figure 13 is the surface topography photo of existing a kind of nitrile butadiene rubber after anti-aging test;
Figure 14 is the surface topography photo of existing a kind of hydrogenated nitrile-butadiene rubber after anti-aging test;
Figure 15 is the surface topography photo of a kind of elastomeric material after anti-aging test of embodiments of the invention;
Figure 16 is the size comparison photo of existing a kind of nitrile butadiene rubber before and after anti-aging test;
Figure 17 is the size comparison photo of a kind of elastomeric material before and after anti-aging test of embodiments of the invention;
Wherein, reference character is: 1, valve body; 11, valve opening; 2, limit element; 21, matrix; 22, elastomer layer; 23, rigid layer; 3, valve block; 91, the first ladder; 92, the second ladder; H, ultimate range; α, angle.
Embodiment
For making those skilled in the art better understand technological scheme of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
term is explained
In the present invention, the meaning of following term or describing mode is as follows:
The situation while that the description of " A and/or B " representing wherein any one or two kinds all may occur, and namely comprises " A and B ", " A ", " B " three kinds of situations.
The description of " A to B " comprises the value of A, the value of B, and any A of being greater than be less than the value of B; Such as, 1 to 10 comprises 1,10, and any be greater than 1 and be less than 10 value, such as 2,3,4,5,6,7,8,9,2.358,3.5,5.26,7.18,9.999 etc.
" be about A " or the description of " substantially for A " represents that target is A, but can have under prior art conditions inevitably between actual and A, can tolerance.
" molecular weight ", if no special instructions, then alleged in the present invention molecular weight is weight average molecular weight, and is all obtained by gel gas chromatography (GPC).
" material consumption ", if no special instructions, then in the present invention, the consumption of material or amount ratio all refer to weight or weight ratio.
The weight percentage of A " in the B " refers to that A is the part belonging to B, when being 100% with the weight of B (comprising A), and the percentage shared by the weight of A.
" weight of relative B, the part by weight of A " refers to that A is not a part of B, when being 100% with the weight of B, and the percentage of the weight relative to B of the weight of A.
" compressor " refers to the machinery for compressing refrigerant in chiller plant (as refrigerator, air-conditioning etc.).
" one-way valve " refers to a kind of valve, and it allows fluid from one side inflow opposite side, and the flowing not allowing fluid reverse.
" elastomeric material (Elastomer) " refers to the material (being generally polymer) that can occur compared with large elastic deformation, and " elastic strain " refers to the deformation that can disappear completely or almost disappear after causing the stress of strain to cancel.
" rigid material " refers to the material with larger hardness and rigidity, thus it elastic strain can not occur very small deformation maybe can only occur.
" peel stress along 180 degree of directions " refer to the structures for two mutual bondings, when along stress required when becoming the direction at 180 degree of angles the two to be peeled away with the adhesive surface of the two, its with " Newton/millimeter " for unit.
limit element and one-way valve
Embodiments of the invention provide a kind of for the limit element in one-way valve, and use the one-way valve of this limit element.
Because one-way valve comprises limit element, so one-way valve is directly introduced by place, also just describe limit element wherein simultaneously.
Concrete, this one-way valve comprises:
There is the valve body of valve opening;
Be arranged on the motor element on valve body one end, for closed valve opening closed position and leave valve opening open position between move;
Be arranged on the limit element on motor element one end, for limiting the open position of motor element, and limit element arranges elastomer layer in the side for contacting with motor element, and elastomer layer is made up of elastomeric material.
In the one-way valve of embodiments of the invention, the position contacted with limit element at motor element (as valve block) has elastomer layer, thus when motor element clashes into limit element, elastomer layer deformable also produces buffer function, extends the stressed time of motor element, reduce the impact strength suffered by it, avoid stress to concentrate and vibration, reduce noise thus, extend the working life of motor element, and allow motor element to have larger aperture, to improve the rate of flow of fluid of one-way valve.
Of course it is to be understood that and above one-way valve (comprising limit element) can be carried out production and selling as product.But this limit element also can be used as independently production and sale, as long as be arranged on afterwards in one-way valve (one-way valve as compressor).
Preferably, the fracture elongation of elastomeric material is at least 10%; More preferably, when tensional strain is 10%, stress is at least 0.5MPa.
Obviously, the elastic performance of elastomeric material has a great impact its buffer function, finds after deliberation, and the elastomeric material meeting above condition can meet buffering needs preferably.
Preferably, the Shore A hardness of elastomeric material 23 degrees Celsius time is 30 to 80, preferred 30 to 70 further.
Because elastomer layer is often subject to the shock of motor element, therefore its hardness also has certain requirement, and cross soft then easily wearing and tearing itself, really up to the mark, can not play good buffer function, find after deliberation, above hardness range is proper.
Preferably, elastomeric material is damping rubber.
That is, above elastomeric material also can be damping material (as damping rubber), thus better plays buffering, effectiveness in vibration suppression.Concrete, available damping rubber is preferably the damping rubber of 3M company, the damping rubber of the models such as VC308, VC310 of such as 3M company.
Preferably, elastomeric material also can be the polymer material of other routine, and it specifically can comprise with any one in Types Below or multiple: polyamide, as nylon66 fiber, semi-aromatic nylon etc.; Polyurethane, as PAUR, hot melt type polyurethane, compound polyurethane material etc.; Polyolefin and polyolefin derivative thing, as polypropylene, polyethylene, natural rubber, butadiene rubber, nitrile butadiene rubber (preferred hydrogenated nitrile-butadiene rubber) etc.; Thermoplastic Vulcanizate; Fluorine rubber, as perfluoroelastomers, fluorosioloxane rubber, partially fluoroether rubber etc.; Acrylate rubber, as ethylene-acrylate rubber, epoxy acrylate rubber etc.; Epoxy resin, as solid epoxy, liquid curable epoxy resin etc.; Phenolic resin.
Certainly, available elastomeric material is not limited to above citing, and those skilled in the art also can select other known elastomeric material to be used as elastomer layer.
As a kind of optimal way of embodiments of the invention, the elastomeric material of above-mentioned elastomer layer can be cross-linked to form by a kind of composition, and said composition comprises:
Nitrile butadiene rubber (preferred hydrogenated nitrile-butadiene rubber);
Grafting graphite, it comprises graphite granule and is grafted on the grafted moiety on graphite granule, and grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
Preferably, in composition the weight percentage of nitrile butadiene rubber 28% to 60%; In composition, the weight percentage of grafting graphite is 2% to 12%.
Preferably, in grafting graphite, the weight of relative graphite granule, the part by weight of grafted moiety is between 6% to 20%.
One-way valve of the present invention is preferably the one-way valve in the compressor of chiller plant, is filled with oil (as lubricant oil) and refrigerant in the working environment of this one-way valve, and operating temperature and pressure higher.Therefore, the material of elastomer layer preferably tackle oil and refrigerant have good resistance (ageing resistance), to ensure at elastomer layer physical property in use (as hardness, mechanical property) and size constancy.Meanwhile, elastomer layer in use can be subject to the impact of valve block and subtle flow repeatedly, therefore its dynamic aging performance, wear-resisting property etc. are also important.
In above-mentioned elastomeric material, grafting graphite is distributed with in the base material that nitrile butadiene rubber (preferred hydrogenated nitrile-butadiene rubber) is main, the graphite granule of grafting graphite there is the grafted moiety of similar nitrile butadiene rubber molecule, therefore its can with nitrile butadiene rubber base material co-crosslinking, eliminate the interface between graphite granule and nitrile butadiene rubber, thus well incorporate in base material, therefore the existence of grafting graphite can not cause harmful effect to mechanical properties such as the intensity of nitrile butadiene rubber.Meanwhile, due to the characteristic of graphite itself, its particle must be sheet, and thus, the graphite granule of sheet can stop that refrigerant, wet goods invade, thus improves the ageing resistance of elastomeric material; And the graphite of sheet also can play the effect improving elastomeric material wear-resisting property and dynamic aging quality resistance, improve the ability that its anti-valve block impacts.That is, above-mentioned composition is except having good mechanical property, and aging quality resistance, dynamically aging quality resistance, wear resistance etc. are also very outstanding, therefore are particularly suitable for the elastomer layer of the one-way valve being used as compressor.The concrete condition of this elastomeric material also by this patent rear section in introduce in detail, just do not repeating herein.
Preferably, as shown in Fig. 3, Fig. 4, Fig. 6, Fig. 7, limit element 2 comprises matrix 21; And elastomer layer 22 is at least located at the side of matrix 21 for contacting with motor element (as valve block 3).
That is, limit element 2 can comprise matrix 21 that is conventional, that be made up of hard material (as steel), and this matrix 21 limits basic shape and the major component of limit element 2.And on the side contacted with motor element, be provided with elastomer layer 22 at matrix 21.Certainly, also elastomer layer 22 can be provided with in the other parts of matrix 21.
Concrete, as a kind of optimal way of embodiments of the invention, as shown in Fig. 3, Fig. 4, Fig. 6, elastomer layer 22 is positioned at the outermost of limit element 2.
That is, directly can be provided with at matrix 21 on the surface for the side contacted with motor element and only be provided with an elastomer layer 22.
Preferably, as a kind of mode of embodiments of the invention, elastomer layer 22 is fastened on matrix 21, and elastomer layer 22 is deviate from required power from matrix 21 is at least 30 newton.
That is, elastomer layer 22 can as shown in Figure 5, and form independent " shell-like " device, it has the structure that can be connected with matrix 21, thus as shown in Figure 3, Figure 4, elastomer layer 22 by machinery type clamping, be socketed on matrix 21; When adopting in this way, to be left behind from matrix 21 by elastomer layer 22, then at least need the power of 30 newton.Such Method compare is convenient to the replacing of elastomer layer 22.
Preferably, as the another kind of mode of embodiments of the invention, as shown in Figure 6, elastomer layer 22 is bonded on matrix 21, and is at least 0.6 Newton/millimeter along the peel stress in 180 degree of directions between elastomer layer 22 and matrix 21.
That is, elastomer layer 22 is also connected on matrix 21 by bonding mode.Such as, epoxies can be coated with on matrix 21, the Bond such as acrylic, polyurethanes, then elastomer layer 22 is glued thereon; Or, also can be coated with rubber adhesive on matrix 21, make elastomer layer 22 and matrix 21 realize co-crosslinking (co-vulcanization) by heating afterwards and be connected on matrix 21.And in this case, 180 degree of peel stress between elastomer layer 22 and matrix 21 are at least 0.6 Newton/millimeter.
As the another kind of optimal way of embodiments of the invention, as shown in Figure 7, elastomer layer 22 is provided with rigid layer 23 for the side contacted with motor element.
That is, matrix 21 also can not only be provided with elastomer layer 22, but be also provided with the rigid layer 23 be made up of rigid material outside elastomer layer 22.
That is, the outermost one deck of limit element is made up of rigid material, and elastomer layer 22 is covered by rigid layer 23.Concrete, rigid material can be steel, cast iron, Cuprum alloy, aluminium, aluminum alloy, titanium alloy, lead, stupalith etc.The advantage of this design is, be positioned at the shock that outermost layer is directly subject to motor element (as valve block 3), and directly contact with external environment (as refrigerant, oil), therefore need higher wear resistance, corrosion resistance etc., and traditional rigid material performance is in this respect better, uses it for outermost and can give full play to its advantage; Meanwhile, be also provided with elastomer layer 22 in rigid layer 23, therefore the impact of motor element is transmitted on elastomer layer 22 by rigid layer 23, elastomer layer 22 still can play buffer function.
Preferably, rigid layer 23 is bonded on elastomer layer 22, is at least 0.6 Newton/millimeter between elastomer layer 22 and rigid layer 23 along the peel stress in 180 degree of directions.
Obviously, rigid layer 23 is difficult to distortion, on the inconvenient elastomer layer 22 being connected to flexibility with machinery types such as cutting ferrules, therefore preferably adopts the mode of bonding connection between itself and elastomer layer 22.
Certainly, matrix 21 also can be provided with " stepped construction (wherein must comprise elastomer layer 22) " that be made up of the layer of multiple different materials.Total number of plies in this stepped construction is preferably between 2 to 20; And the concrete spread pattern of the layer in stepped construction is various, such as, rigid layer 23 and elastomer layer 22 that many groups replace arrangement can be comprised, maybe can comprise multiple continuous print rigid layer 23 or multiple continuous print elastomer layers 22 etc.
Preferably, in above-mentioned one-way valve, the thickness of matrix 21 can between 0.5 millimeter to 4 millimeters; The thickness of elastomer layer 22 at 0.1 millimeter to 5 millimeters, more preferably at 0.5 millimeter to 1.5 millimeters; And the thickness of rigid layer 23 is preferably between 0.01 millimeter to 4 millimeters.
Obviously, for above elastomer layer 22, rigid layer 23 etc., if its thickness is too thin, respective effect can not be played, too thick, other performances (if such as rigid layer 23 is too thick, then elastomer layer 22 can be made not have buffer function) may be affected.
Preferably, the one-way valve of embodiments of the invention is for the one-way valve in compressor, and above-mentioned limit element is for the limit element in compressor one-way valve.Preferred, as shown in Fig. 3, Fig. 4, Fig. 6, Fig. 7, in this one-way valve (compressor one-way valve):
Valve body 1 comprises first surface, and valve opening 11 opening on the first surface;
Motor element is the valve block 3 comprising fixing part and motion portion, and its fixing part connects on the first surface, and motion portion is used for covering the closed position of valve opening 11 and move between the open position leaving valve opening 11 (namely relative valve body 1 moves);
Limit element 2 comprises and is positioned at the limited part of valve block 3 away from first surface side, and point on the direction in motion portion at the fixing part from valve block 3, the distance between limited part and first surface increases gradually.
That is, for the one-way valve in compressor, its motor element is preferably the form of valve block 3, valve block 3 is long strip thin slice, can be made up of high cycle fatigue steel (as spring steel), its one end (fixing part) is connected on valve body 1, the other end (motion portion) flexible distortion, thus can to-and-fro motion between the closed position being attached at valve body 1 surface and the open position leaving valve body 1 surface.
And one end of limit element 2 also can be fixedly connected on valve body 1 surface, and it comprises the limited part be positioned at above valve block 3 motion portion, thus restriction valve block 3 leaves the distance (i.e. open position) on valve body 1 surface.Simultaneously, the limited part of limit element 2 is obliquely installed, its " root " place and valve body 1 surface closest, " end " then with valve body 1 most portionafrom theasurface, thus limited part is by the structure of root to end " tilting ", so just can limit the form that valve block 3 increases gradually for opening degree.
Preferably, for above-mentioned for the one-way valve in compressor, limited part 2 is convex globoidal towards the surface of valve block 3 side.
That is, as shown in Fig. 4, Fig. 6, Fig. 7, the face that the limited part of limit element 2 is used for contacting with valve block 3 is preferably cambered surface and non-planar surface, and this cambered surface is the convex globoidal protruded to valve block 3, that is, point on the direction in motion portion at the fixing part from valve block 3, this convex globoidal is increasing relative to the tilting degree of first surface.The design of this convex globoidal can make the stress dispersion of valve block 3 when opening.Simultaneously, as shown in Figure 4, when meeting above condition, when valve block 3 is opened and the contact process of limit element 2 two stages can be divided into carry out: first bend when valve block 3 clashes into limit element 2 and be attached on the surface (the first ladder 91) of limit element 2, the elastomer layer 22 of projection is because stressed and by compressive strain afterwards, the surface configuration of limit element 2 changes, and valve block 3 also continues the position of the second ladder 92 moving upward to dotted line in figure.That is, the knockout process of valve block 3 becomes " cascade ", thus the stress equilibrium on valve block is disperseed, and eliminates region of stress concentration.
As shown in Figure 6, preferred, point on the direction in motion portion at the fixing part from valve block 3, the curvature of the convex globoidal on the surface of this limit element 2 is preferably 1/72 millimeter/mono-to 1/172 millimeter/mono-; And/or the angle α of above-mentioned convex globoidal between the tangent plane and first surface of the position near first surface is 9 degree to 40 degree (figure middle valve plate 3 is parallel to first surface, and one end of GuαJiao has been drawn in valve block 3 surface).Preferably, the limited part of limit element 2 near the ultimate range H between the side and first surface of first surface at 3 millimeters to 32 millimeters.
That is, the curvature of above-mentioned convex globoidal is preferably at 1/72 (mm
-1) to 1/172 (mm
-1) between, better can ensure above " cascade " knockout process like this.Meanwhile, the angle α between the root of limit element 2 limited part and valve body 1 surface is preferably at 9 degree to 40 degree.And the distance H between the end of limit element 2 limited part and valve body 1 surface is preferably between 3 millimeters to 32 millimeters; Concrete, for the one-way valve in freezer compressor, this distance H can at 3 millimeters to 18 millimeters, and for the one-way valve in air condition compressor, this distance H can at 5 millimeters to 32 millimeters.
Obviously, above ultimate range H, curvature, angle α define the maximum opening degree (aperture) of valve block 3 jointly, the maximum opening degree of their the larger then valve block 3 of value is larger, and the rate of flow of fluid of one-way valve is also larger, and compressor efficiency is higher; But corresponding, valve block 3 is out of shape also larger, more easily damages.Because the limit element 2 of the one-way valve of embodiments of the invention comprises elastomer layer 22, the stress that can effectively reduce on valve block 3 is concentrated, therefore the span of above-mentioned each parameter is all larger than prior art, namely embodiments of the invention can increase its maximum opening degree in the not impaired situation of guarantee valve block 3, thus improve the rate of flow of fluid of one-way valve and the efficiency of compressor.
What more than introduce is the structure of one-way valve in compressor.But obviously, the one-way valve of embodiments of the invention does not limit the use of within the compressor, and it also can be the one-way valve of automobile air valve etc.And, the structure of the one-way valve of embodiments of the invention is also not limited to above concrete form, such as, its motion portion also can be can between the position (closed position) blocking valve opening and the position (open position) leaving valve opening " piston " of movement.In a word, as long as have valve body, motor element, limit element in one-way valve, and limit element comprises above-mentioned elastomer layer, namely belongs to protection scope of the present invention.
grafting graphite
1, grafting graphite
Embodiments of the invention also provide a kind of grafting graphite, and this grafting graphite can be used in above-mentioned composition, and said composition can be used for the elastomeric material of the elastomer layer forming above compressor one-way valve.
Concrete, this grafting graphite comprises graphite granule and is grafted on the grafted moiety on graphite granule, and grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
Wherein, " copolymer of butadiene and acrylonitrile " is nitrile butadiene rubber, that is, in the grafting graphite of embodiments of the invention, and the grafting basic group of nitrile butadiene rubber molecule on graphite granule.
Wherein, the particle diameter of above-mentioned graphite granule is preferably between 200 nanometer to 5000 nanometers.
Graphite granule in this particle size range can be dispersed in base material (nitrile butadiene rubber), and plays the effect improving elastomer layer performance (as aging quality resistance).
Preferably, in grafting graphite, the weight of relative graphite granule, the part by weight of grafted moiety is between 6% to 20%; More preferably between 6% to 17%.
That is, in grafting graphite, the weight ratio of simple grafted moiety and simple graphite granule is preferably in (0.06 ~ 0.2): 1, and " grafting amount " in other words on graphite granule is preferably between 0.06 ~ 0.2.Obviously, on graphite granule, the performance of amount on elastomeric material of grafted moiety has important impact, finds after deliberation, and the grafting amount in above proportion the most effectively can improve the ageing resistance of elastomeric material, too small, act on not obvious, excessive, grafting process is difficult to realize.
Preferably, above-mentioned grafted moiety is the butadiene of hydrogenation and the copolymer group of acrylonitrile, and is preferably (as amino-terminated) butadiene of end-blocking and the copolymer group of acrylonitrile.
That is, the nitrile butadiene rubber (copolymer of butadiene and acrylonitrile) for carrying out grafting to graphite granule is preferably the nitrile butadiene rubber of hydrogenated nitrile-butadiene rubber and end-blocking, better can improve the ageing resistance of elastomeric material like this.
2, the preparation method of grafting graphite
Embodiments of the invention also provide a kind of preparation method of above-mentioned grafting graphite, and it comprises:
Carry out functionalized to graphite granule;
Be grafted to by grafted moiety on graphite granule, obtain grafting graphite, wherein, grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
That is, can first carry out functionalized to the graphite granule of sheet, make it connect required functional group, by these functional groups, above-mentioned grafted moiety is grafted on graphite granule afterwards.
Concrete, the preparation method of grafting graphite can comprise the following steps:
S101, graphite granule to be mixed with strong oxidizer.
Wherein, strong oxidizer selects benzoyl peroxide (BPO), therefore this step is specially: by raw graphite and benzoyl peroxide according to 100: 6 weight ratio mix, and be under the condition of 3 to 4 by ball grinding method ground and mixed 2 hours in ratio of grinding media to material, make the particle diameter of raw graphite narrow down to the particle size range of above-mentioned graphite granule, and fully mix with benzoyl peroxide.
Fig. 8 is the stereoscan photograph of graphite granule, visible, and graphite granule is significantly laminar structured, and its particle diameter is in the scope of above 200 nanometer to 5000 nanometers.
S102, to heat, to make graphite granule functionalized.
This step is specially and the mixture of graphite granule and strong oxidizer is heated to 110 DEG C and keeps 10 minutes.
In order to the comparativity of result, in embodiments of the invention, all adopt above-mentioned BP as strong oxidizer, and the heating parameters that unified employing is above.But obviously, strong oxidizer also can use other material.
Such as, can be also strong oxidizer with peroxidating two propyl benzene, now the weight ratio of raw graphite and peroxidating two propyl benzene is maximum be no more than 3: 1, and the heating temperature that can be at 150 DEG C keeps 1 hour.
For another example, can be also strong oxidizer with potassium permanganate, now the weight ratio of raw graphite and potassium permanganate is maximum be no more than 3: 1, and the heating temperature that can be at 160 DEG C keeps 2 hours.
S103, will fully eluriate to neutral after graphite granule cool to room temperature, post-drying, obtain the powder of brown color, be functionalized graphite granule.
Now, a large amount of functional group of grafting on the graphite granule of sheet, wherein, the functional group that the graphite granule edge section of sheet connects is based on carboxyl and hydroxyl, and the functional group that intermediate portion connects is based on epoxide group.
S104, graphite granule to be added in DMF (DMF), and ultrasonic process 15 minutes, obtain uniform suspension.
Wherein, the weight of relative graphite granule, the part by weight of DMF is preferably 350% to 450%, and namely the weight ratio of graphite granule and DMF is 1: (3.5 ~ 4.5).
S105, by copolymer (the namely nitrile butadiene rubber of butadiene and acrylonitrile, but this nitrile butadiene rubber is the raw material of preparation grafting graphite, different from the nitrile butadiene rubber in composition product), dicyclohexylcarbodiimide (DCC) adds in above-mentioned suspension, and stir and make it be evenly distributed in 30 minutes.
Wherein, the weight of relative graphite granule, the part by weight of dicyclohexylcarbodiimide is preferably 1% to 5%, and namely the weight ratio of graphite granule and dicyclohexylcarbodiimide is 1: (0.01 ~ 0.05).
Wherein, the weight of relative graphite granule, the part by weight of the copolymer of butadiene and acrylonitrile is 18% to 40%, and namely the weight ratio of the copolymer of graphite granule and butadiene and acrylonitrile is 1: (0.18 ~ 0.4).
Typically, in course of reaction, the copolymer of butadiene and acrylonitrile can not all be grafted on graphite granule, therefore the consumption of the copolymer of butadiene in reactant and acrylonitrile must be greater than the amount of grafted moiety required in grafting graphite products.Find after deliberation, according to above consumption, the grafting amount that can ensure in grafting graphite products meets the scope of above 0.06 ~ 0.2.
Wherein, the copolymer of butadiene and acrylonitrile is preferably (as amino-terminated) liquid butadiene of end-blocking and the copolymer of acrylonitrile, and the copolymer of butadiene and acrylonitrile is preferably the copolymer through hydrotreated hydrogenated butadiene and acrylonitrile.In order to the comparativity of result, in embodiments of the invention, amino-terminated liquid nitrile rubber is all adopted to be raw material.
S106, heated suspension liquid, make grafted moiety be grafted on graphite granule.
Wherein, heating be preferably be incubated at the temperature of 80 DEG C to 100 DEG C 20 little of 28 hours.In order to the comparativity of result, in embodiments of the invention, heat 24 hours under being unified in the temperature of 90 DEG C.
In heating process, the process of graft reaction is as follows:
Wherein, Graphite platelet represents the graphite granule of sheet, and NBR represents the copolymer group of butadiene and acrylonitrile, NH
2-NBR represents amino-terminated nitrile butadiene rubber raw material.
S107, filter suspension, filtration product is dried and is obtained powder, is above-mentioned grafting graphite.
composition
Embodiments of the invention also provide a kind of composition, and it comprises:
Nitrile butadiene rubber;
Grafting graphite, it comprises graphite granule and is grafted on the grafted moiety on graphite granule, and grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
The composition of embodiments of the invention comprises nitrile butadiene rubber (refer to independent nitrile butadiene rubber, but not be grafted on the group on graphite granule) and above-mentioned grafting graphite, and it can obtain the elastomeric material of above-mentioned elastomer layer after crosslinked.
Preferably, in the composition, the weight percentage of nitrile butadiene rubber is 28% to 60%; The weight percentage of grafting graphite is 2% to 12%; Preferred further, the weight percentage of nitrile butadiene rubber is 30% to 50%; The weight percentage of grafting graphite is 3.5% to 7.5%.
Nitrile butadiene rubber and above-mentioned grafting graphite are most important components in composition, and their content has important impact for the performance of formed elastomeric material, and find after deliberation, above content range is preferred.
Preferably, nitrile butadiene rubber is herein hydrogenated nitrile-butadiene rubber.
That is, nitrile butadiene rubber as the main base material of composition is preferably also through hydrogenation, to improve the aging quality resistance of product elastomeric material further.Such as, herein can nitrile butadiene rubber comprise the commercially available nitrile butadiene rubber product of the trade mark 3406 (purchased from Lanxess Corporation), 4307 (purchased from Lanxess Corporation), 4221 (purchased from Beyer Co., Ltd) etc.
Obviously, in the composition, also can be added with other conventional constituents, to improve the performance of product elastomeric material, wherein, the component that can add includes but not limited to following one or more:
(1) crosslinking agent
Crosslinking agent mainly for generation of free radicals, thus causes cross-linking reaction, makes between the nitrile butadiene rubber in composition, and nitrile butadiene rubber is with all can be well crosslinked together between grafting graphite.
Preferably, in the composition of embodiments of the invention, available crosslinking agent comprises peroxide crosslinking agent (as cumyl peroxide), ester class crosslinking agent (as triene-propyl isocyanurate), sulphur class crosslinking agent etc.
Preferably, in the composition, the weight percentage of crosslinking agent is 2.5% to 4%.
(2) plasticizing agent
Plasticizing agent for reducing the intermolecular active force of product elastomeric material, thus reduces its hardness, improves its plasticity, mobility etc.Especially, in order to the stress reducing motor element is concentrated and vibration passing, therefore the hardness of the elastomer layer of embodiments of the invention should not be excessive, wherein more should use plasticizing agent.
Concrete, plasticizing agent available in the composition of embodiments of the invention comprises polyester type plasticizer, polyether-type plasticizing agent etc.Typically, in the composition, the weight percentage of plasticizing agent can 4% to 10%.
Because elastomeric material of the present invention is preferred in the one-way valve of compressor, therefore it can contact with refrigerant, wet goods, and many existing plasticizing agent can be dissolved among refrigerant, wet goods and lost efficacy gradually, the hardness of elastomeric material, size etc. is caused to change, thus inapplicable.Find after deliberation, TP-759 type plasticizing agent is minimum by the impact of refrigerant, oil, therefore is specially adapted to the present invention.TP-759 type plasticizing agent is a kind of high-compatibility polyester, polyether mixed type plasticizing agent, is produced by Rhom and Hass of the U.S..
(3) age resister
Age resister is mainly used in the ageing process delaying elastomeric material, extends its working life.
Concrete, age resister available in the composition of embodiments of the invention comprises 2,4-trimethyl-1,2-dihyaroquinoline polymer etc.
(4) promoter
Promoter is mainly used in increasing reactive rate.
Concrete, promoter available in the composition of embodiments of the invention comprises: sulfo-amino class, as zinc dibutyl dithiocarbamate; Thiurams, as monothio tetra methylthiuram, six sulfo-s (or four sulfurations) two pentamethyl thiuram; Sulfenamide, as N cyclohexyl 2 benzothiazole sulfenamide, N-dicyclohexyl-2-[4-morpholinodithio time sulphonyl etc.Certainly, the promoter of embody rule can be above any one or multiple combination.
(5) filler
Filler is generally inorganic material powders, for filling in the substrate, to change the mechanical property of material monolithic or to reduce costs.
Concrete, filler available in the composition of embodiments of the invention comprises carbon black, potter's clay, French chalk, calcium carbonate etc.
(6) auxiliary agent
Auxiliary agent comprises multiple different type, and it includes but not limited to: react the reaction promoter carried out, as zine oxide, magnesium oxide etc. for promoting; For helping shaping shaping assistant, as polyethyleneglycol etc.; For helping the processing aid improving processibility, as stearic acid etc.
Wherein, said composition directly can be mixed to get according to a conventional method by above each component, is not described in detail at this.
elastomeric material
Embodiments of the invention also provide a kind of elastomeric material, and it is cross-linked to form by above-mentioned composition.
Concrete, the basic skills being cross-linked to form elastomeric material by above-mentioned composition is made each component melts by heating and realized cross-linking reaction, and its heating-up temperature can at 100 DEG C to about 200 DEG C, and the time can in dozens of minutes to a few hours; The conventional method such as technique that what it was concrete make comprises mixing, hot pressing, extrude, is not described in detail at this.
In order to the comparativity of result, in various embodiments of the present invention, unified prepare elastomeric material according to following technique: make composition crosslinked 10 minutes of hot pressing under the pressure of the temperature of 170 DEG C and 10MPa; Heat 4 hours at the temperature of 140 DEG C in oven afterwards.
embodiment
Different elastomeric materials and one-way valve is prepared below, as embodiments of the invention and comparative example, with exemplary explanation the present invention according to above formula, preparation method.
1, material table
The title, composition, parameter, source etc. of material used in embodiments are as shown in the table:
The raw material parameter list used in table 1, the embodiment of the present invention
2, test method
To elastomeric material and the one-way valve of each embodiment and comparative example, carry out some testing propertys, its concrete test method is as follows:
(1) peel stress test
Along becoming the direction of 180 degree to be peeled off from matrix by elastomer layer with adhesive surface, test its stress as peel stress with tensile machine (purchased from Instron company).
(2) simulation is clashed into
By the stress distribution, Vibration Condition, maximum stress, maximum impact pressure, aperture, rate of flow of fluid etc. of the abaqus finite element software analog computation one-way valve running middle valve plate of French Dassault Sys of America.
(3) Mechanics Performance Testing
Test every mechanical property of elastomeric material, it comprises:
Tensile strength: elastomeric material is made the 1st type sample in CNS GB/T528, wherein, sample is dumbbell shape, thickness is 2 ± 0.2 millimeters, and total length is 115 millimeters, and middle narrow portion length is 33 ± 2 millimeters, narrow portion width is 6+0.4 millimeter, connected by two between narrow portion with end and the contrary circular sliding slopes in direction, the arc transition radius near narrow portion is 14 ± 1 millimeters, and the arc transition radius near end is 25 ± 2 millimeters; Under the speed of 500mm/min, it is stretched with the tensile machine (purchased from instron company) of 3365 types, and test the maximum stress in drawing process, as tensile strength.
Fracture elongation: elastomeric material is made the 1st above-mentioned type sample, stretch to it under the speed of 500mm/min with the tensile machine (purchased from instron company) of 3365 types, strain when rupturing with it is fracture elongation.
Hardness: elastomeric material is made the 1st above-mentioned type sample, test its surface hardness with the Shore A durometer (purchased from Shanghai six water chestnut instrument plant) of XL-A type, each sample is tested 3 times at diverse location and is averaged as result.
(4) anti-aging test
At the temperature of the pressure of 20 bar (Bar) and 140 DEG C, the 1st above-mentioned type sample is soaked 40 days in simulated solution, afterwards it is observed and test, judging its aging quality resistance.
Wherein, simulated solution is used for the environment in analog compression machine, and it is made up of the oil be dissolved in together and refrigerant; The model of oil is 4GSI and 410W (all purchased from Japanese Sun Company, Inc.), and the two weight ratio is 100: 15; The model of refrigerant is R22 (available from DuPont company), and refrigerant is 100: 13 with the weight ratio of oil (total amount).
After immersion completes, the aging quality resistance according to following index judgement sample elastomeric material:
Whether surface has cracking, foaming, not as well;
Size changing rate, with increasing degree within 5% as well;
Shore hardness variance ratio, to reduce amplitude within 15% as well;
Tensile strength variance ratio, to reduce amplitude within 20% as well.
Wherein, when the performance that each " variance ratio " refers to carry out soaking front material is 100%, the relative scale of the variable quantity of material respective performances after soaking.
(5) dynamic anti-aging test
Elastomer layer in use can repeatedly be subject to the shock of valve block and be out of shape, therefore the ability (i.e. dynamic aging quality resistance) of its opposing repeated deformation is very important, and dynamic anti-aging test comprises:
Elastomeric material is made 25 mm wides, 140 millimeters to 155 millimeters long, the bar-shaped sample of 6.3 millimeters thick, in the side at the center along bar-shaped sample length direction, process run through its width direction, the semi-circular recesses of radius 2.38 millimeters.
Bar-shaped sample two ends are clipped on two chucks of GT7011 type moral ink West Asia Deflection testing machine (purchased from Taiwan height Inland Steel), above-mentioned groove is made to be in center, open testing machine, one of them chuck do relatively another chuck do " away from-close " to-and-fro motion, this reciprocating stroke is 57 millimeters, frequency 5Hz, the ultimate range between two chucks is 75 millimeters.Along with the motion of chuck, bar-shaped sample also by " bending-stretching " repeatedly, after certain number of times that circulates, is observed the slight crack situation in bar-shaped sample, is judged its dynamic aging quality resistance grade, specific as follows:
1 grade, only have naked eyes to look the slight crack of similar " acupuncture points ", and quantity is no more than 10;
2 grades, only have naked eyes to look the slight crack of similar " acupuncture points ", and quantity is greater than 10;
3 grades, have the slight crack of " crackle shape ", and maximum crack length is greater than 0.5 millimeter is no more than 1 millimeter;
4 grades, have the slight crack of " crackle shape ", and maximum crack length is greater than 1 millimeter is no more than 1.5 millimeters;
5 grades, have the slight crack of " crackle shape ", and maximum crack length is greater than 1.5 millimeters is no more than 3 millimeters;
6 grades, have the slight crack of " crackle shape ", and maximum crack length is greater than 3 millimeters.
3, embodiment and comparative example
According to above preparation method, select different raw materials, the formula different elastomeric material of preparation and one-way valve, as specific embodiments of the invention and comparative example, and carry out corresponding testing property.
Embodiment 1:
The matrix (being made up of cold rolled steel) of limit element is cleaned with butanone and isopropanol the Bond that rear coating thickness is about 30um, and under the environment of 60 DEG C dry 30 minutes; Then by hydrogenated nitrile-butadiene rubber and the matrix with Bond at the temperature of 160 DEG C or 170 DEG C crosslinked (sulfuration) 10 minutes, form elastomer layer at matrix surface; Test the peel stress of these elastomer layers afterwards, its result is as shown in the table:
Table 2, the peel stress (N/mm) of elastomer layer when using different Bond
Visible, when being bonded on matrix by elastomer layer by the Bond of routine, its peel stress all can meet the above requirement being more than or equal to 0.6 Newton/millimeter.
Embodiment 2:
According to above-mentioned shock analog detection method, set up the model of the one-way valve (there is elastomer layer) of embodiments of the invention and existing one-way valve (not having elastomer layer), simulate their stress, Vibration Condition etc. in use respectively.
Wherein, as shown in Figure 1 and Figure 2, its concrete dimensional parameters is as follows for the structure of existing one-way valve model:
Limited part thickness: 2.5mm;
Limited part lower surface curvature: 1/150 (mm
-1);
Limited part root and valve body angle: 3.257 degree;
Throttle slice thickness: 0.152 millimeter;
Valve plate movement minister degree: 14 millimeters;
Valve plate movement portion width: 7.6 millimeters;
Frequency of okperation: 50Hz.
In simulation, limited part is made up of cold rolled steel material, and valve block is made up of spring steel material, and the two mechanics parameter is in simulations respectively:
Cold rolled steel: Young's modulus 193GPa, tensile strength 505MPa, fracture elongation 70%;
Spring steel: Young's modulus 210GPa, tensile strength 1500MPa, fracture elongation 8%.
As shown in Figure 6, Figure 7, itself and existing one-way valve are similar for the structure of the one-way valve model of the embodiment of the present invention, and difference is that its limited part comprises above-mentioned elastomer layer.Concrete, the matrix of limited part directly can be provided with the elastomer layer of individual layer, now elastomer layer thickness is 0.6 millimeter, and adopts hydrogenated nitrile-butadiene rubber or silica gel material; Or, matrix also can have stepped construction, this stepped construction comprises the elastomer layer being positioned at inner side (near matrix) and the rigid layer being positioned at outside (away from matrix), wherein elastomer layer adopts hydrogenated nitrile-butadiene rubber material, thickness is 0.5 millimeter, rigid layer is sampled above-mentioned cold rolled steel material, and thickness is 0.8 millimeter.
In simulation, the mechanics parameter of elastomer layer material is:
Hydrogenated nitrile-butadiene rubber: Young's modulus 6MPa, tensile strength 18.3MPa, fracture elongation 250%;
Silica gel: Young's modulus 3MPa, tensile strength 6.5MPa, fracture elongation 500%.
Fig. 9 and Figure 10 is respectively the simulation distribution figure with the maximum stress suffered by each position of valve block of the one-way valve of individual layer hydrogenated nitrile-butadiene rubber elastomer layer of existing one-way valve and embodiments of the invention in the cycle of motion.Visible, after increase elastomer layer, in the middle part of valve block, original area of stress concentration disappears, and this represents that the stress of valve block suffered by movement process significantly reduces, thus can extend the working life of valve block, and is that the aperture increasing valve block provides possibility.
Figure 11 and Figure 12 is respectively the simulation drawing with the Vibration Condition of the valve block of the one-way valve of individual layer hydrogenated nitrile-butadiene rubber elastomer layer of existing one-way valve and embodiments of the invention in the cycle of motion.Visible, after increase elastomer layer, the vibration of valve block self significantly reduces, thus can extend valve block working life, and can reduce the disturbance of fluid, improves rate of flow of fluid.
Following table is the analog result of partial properties in valve plate movement process.Visible, compared with the one-way valve not having elastomer layer, after increase elastomer layer, the maximum impact force suffered by valve block and maximum stress reduce-55.8% and-34.5% respectively, accordingly, fluid (refrigerant) flow velocity of its aperture and one-way valve increases 7.37% and 5.9% respectively.As can be seen here, the existence of elastomer layer significantly can reduce the impact suffered by valve block, thus reduces vibration and noise, and extends the working life of valve block, increases the rate of flow of fluid of one-way valve simultaneously, and then improves the efficiency of compressor.
The analog result of table 3, nonelastic body layer and the one-way valve with individual layer hydrogenated nitrile-butadiene rubber elastomer layer
| Project | Nonelastic body layer | Individual layer hydrogenated nitrile-butadiene rubber elastomer layer |
| Maximum impact force suffered by valve block | 75.6N | 33.4N |
| Valve block maximum stress | 473.213MPa | 309.761MPa |
| Valve block aperture | 3.133mm | 3.364mm |
| Rate of flow of fluid | 2.657kg/h | 2.813kg/h |
Following table is to by individual layer hydrogenated nitrile-butadiene rubber and the individual layer silica gel analog result as the one-way valve of elastomer layer, visible, also can play buffer function with other elastomeric materials such as silica gel as elastomer layer, this shows that elastomer layer of the present invention is not limited to hydrogenated nitrile-butadiene rubber.
Table 4, analog result with the one-way valve of individual layer hydrogenated nitrile-butadiene rubber elastomer layer or monolayer silicon glue elastomer layer
| Project | Monolayer silicon glue elastomer layer | Individual layer hydrogenated nitrile-butadiene rubber elastomer layer |
| Maximum impact force suffered by valve block | 31.5N | 33.4N |
| Valve block maximum stress | 327.24MPa | 309.761MPa |
| Valve block aperture | 3.361mm | 3.364mm |
The analog result of the one-way valve of table 5, nonelastic body layer, individual layer hydrogenated nitrile-butadiene rubber elastomer layer, stepped construction
| Project | Nonelastic body layer | Individual layer hydrogenated nitrile-butadiene rubber elastomer layer | Stepped construction |
| Maximum impact force suffered by valve block | 75.6N | 33.4N | 36.4N |
| The time that valve plate movement puts in place | 0.002052s | 0.002069s | 0.002066s |
From upper table, valve block impact force when single layer of elastomeric layer and stepped construction is used all to be less than the situation of nonelastic body layer, and the time that valve plate movement puts in place is all greater than the situation (this represents valve plate movement increased periods, and suffered impact force can reduce) of nonelastic body layer; Therefore, both of these case all can play the effect of buffering.Comparatively speaking, what use the one-way valve of single layer of elastomeric layer uses the one-way valve of stepped construction lower by force rate, and this shows that the buffer function of valve block decreases, but still is better than the situation of nonelastic body layer after increase rigid layer.
Embodiment 3 to 12, comparative example 1 and 2:
As previously mentioned, one-way valve of the present invention is preferably for the one-way valve in compressor, and this one-way valve is in the complex environment of high temperature, high pressure, high corrosion (refrigerant and oil), therefore wherein the material of elastomer layer should have the ability of resisting above environment.
According to the formula in above-mentioned preparation method and following form, prepare different grafting graphite, for the elastomeric material that preparation is different.
The parameter (consumption is weight portion) of table 6, grafting graphite
| Numbering | Grafting graphite 1 | Grafting graphite 2 | Grafting graphite 3 | Contrast graphite |
| F09 consumption | 100 | 100 | 100 | 100 |
| DMF consumption | 400 | 400 | 400 | 400 |
| LNBR-NH 2Consumption | 20 | 40 | 25 | 10 |
| DCC consumption | 1 | 1 | 2 | 1 |
| Grafting amount | 0.09 | 0.17 | 0.12 | 0.02 |
Wherein, when each material consumption refers to and prepares grafting graphite according to the method described above, the amount of substance adopted in each step; And grafting amount is the weight ratio of grafted moiety and graphite granule in product grafting graphite, it calculates according to the gain in weight (because gain in weight is similar to the weight can regarding grafted moiety as) of product grafting graphite-phase for raw graphite.
Wherein, contrast graphite-made for time nitrile butadiene rubber amount used and final grafting amount be all less than preferable range of the present invention, therefore it can be used as comparative example.
By grafting graphite according to the formula in following form, be prepared into the composition of different embodiment or comparative example, and form elastomeric material according to the method described above with these compositions, then test the performance of each elastomeric material according to the method described above.
Table 7, composite formula (material consumption is its weight percentage in the composition)
From upper table, the performance etc. such as hardness, tensile strength, fracture elongation of the elastomeric material containing grafting graphite of embodiments of the invention 3 to 12 all meets the requirements, can as the material of above-mentioned elastomer layer.
From comparative example 2, wherein use the contrast graphite that grafting amount is less, the tensile strength of the elastomeric material of its correspondence only has 11.6MPa, obviously low than the tensile strength of the elastomeric material of the embodiment of the present invention.This shows, if the grafting amount of grafting graphite too small (or basic non-grafting), then graphite can not well incorporate in elastomeric material, and it can cause harmful effect to performances such as the intensity of elastomeric material on the contrary, therefore and inapplicable.Relative, the grafting graphite of embodiments of the invention can realize co-crosslinking with nitrile butadiene rubber, eliminates the interface of graphite granule and nitrile butadiene rubber, thus well incorporates in nitrile butadiene rubber, therefore can not cause harmful effect to performances such as the intensity of elastomeric material.
Below other performance of the elastomeric material of above embodiment is described in detail.
To existing nitrile butadiene rubber (unhydrided nitrile butadiene rubber, model is 230S, purchased from Japanese JSR company), the elastomeric material of existing hydrogenated nitrile-butadiene rubber (model is 4307, purchased from Lanxess Corporation), embodiments of the invention 3 carries out above-mentioned anti-aging test.
Figure 13, Figure 14, Figure 15 are respectively the surface topography photo of elastomeric material after above-mentioned anti-aging test of existing nitrile butadiene rubber, existing hydrogenated nitrile-butadiene rubber, embodiments of the invention 3.Visible, the elastomeric material surface of embodiments of the invention 3 does not almost produce cracking, foaming etc.; Relative, existing nitrile butadiene rubber, hydrogenated nitrile-butadiene rubber surface have foaming, but the foaming of common unhydrided nitrile butadiene rubber (230S) is more serious than the foaming of hydrogenated nitrile-butadiene rubber (4307).
Figure 16, Figure 17 are respectively the size comparison photo of elastomeric material before and after anti-aging test of existing hydrogenated nitrile-butadiene rubber, embodiments of the invention 3, when aliging in material side, namely the alternate position spike of its opposite side represents material at the size expansion after anti-aging test.Visible, the expansion of elastomeric material size after anti-aging test of embodiments of the invention 3 is very little, and the size expansion of existing hydrogenated nitrile-butadiene rubber is obvious.
Above result shows:
The first, the elastomeric material of embodiments of the invention has good aging quality resistance, and the aging quality resistance of existing nitrile butadiene rubber and hydrogenated nitrile-butadiene rubber is all poor than elastomeric material of the present invention.
The second, the unhydrided nitrile butadiene rubber of aging quality resistance again than common of existing hydrogenated nitrile-butadiene rubber is good.This proves, carries out hydrogenation contribute to improving its aging quality resistance to nitrile butadiene rubber; As can be seen here, in elastomeric material of the present invention, and in the preparation process of grafting graphite, use hydrogenated nitrile-butadiene rubber for raw material be all preferred.
The aging quality resistance of table 8, elastomeric material
| Numbering | Comparative example 1 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Bubble | Nothing | Nothing | Nothing | Nothing |
| Cracking | Nothing | Nothing | Nothing | Nothing |
| Size changing rate % | 12 | 5 | 8 | 7 |
| Shore hardness variance ratio % | -20 | -11 | -14 | -13 |
| Tensile strength variance ratio % | -25 | -6 | -10 | -9 |
Upper table is according to the method described above to the result of the anti-aging test that the elastomeric material of various embodiments of the present invention and comparative example carries out.Visible, relative to the elastomeric material of the various embodiments of the present invention containing grafting graphite, do not contain the elastomeric material of the comparative example 1 of grafting graphite after anti-aging test, the variance ratio of size, hardness, tensile strength is all obviously larger, if this shows not containing grafting graphite, then in refrigerant and oily environment, the performance of material can worsen rapidly.That is, the elastomeric material containing grafting graphite of embodiments of the invention, really have stronger resistance (namely having better aging quality resistance) to refrigerant and oil, therefore it is preferably used as the elastomer layer in the one-way valve of compressor.
According to the method described above, test the dynamic aging quality resistance of the elastomeric material of various embodiments of the present invention and comparative example, its result is as shown in the table.
The dynamic aging quality resistance of table 9, elastomeric material
Wherein, comparative example 1 represents above-mentioned not containing the elastomeric material of grafting graphite, and several examples afterwards represent on the basis of the elastomeric material of ratio 1, the elastomeric material (being equivalent to the elastomeric material of embodiments of the invention) of gained after the grafting graphite 3 of the additional weight percent of 3%, 6%, 12% of difference.Visible, along with the raising of grafting content of graphite, the dynamic aging quality resistance of elastomeric material is also significantly improving, and this shows that the elastomeric material of embodiments of the invention has good dynamic aging quality resistance.
In sum, the limited part of the one-way valve of embodiments of the invention is provided with elastomer layer, it can play the effect of buffering and vibration damping, thus stress suffered by reduction valve block and vibration, extend valve block working life, reduce noise, the aperture of valve block is increased, and then improve the rate of flow of fluid of one-way valve, and improve the efficiency of compressor.
Meanwhile, every mechanical property of the elastomeric material of embodiments of the invention all meets the requirement as elastomer layer, and its aging quality resistance and dynamic aging quality resistance are also fine, therefore preferably can be used as the material of the elastomer layer of the one-way valve in compressor.
Be understandable that, the illustrative embodiments that above mode of execution is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (52)
1., for a limit element for one-way valve, it for being arranged on motor element one end of one-way valve, thus limits the open position of described motor element, wherein,
Described limit element arranges elastomer layer in the side for contacting with described motor element, and described elastomer layer is made up of elastomeric material.
2. the limit element for one-way valve according to claim 1, wherein,
The fracture elongation of described elastomeric material is at least 10%.
3. the limit element for one-way valve according to claim 2, wherein,
The stress of described elastomeric material when tensional strain is 10% is at least 0.5MPa.
4. the limit element for one-way valve according to claim 1, wherein,
The Shore A hardness of described elastomeric material 23 degrees Celsius time is 30 to 80.
5. the limit element for one-way valve according to claim 4, wherein,
The Shore A hardness of described elastomeric material 23 degrees Celsius time is 30 to 70.
6. the limit element for one-way valve according to claim 1, wherein,
Described elastomeric material is damping rubber.
7. the limit element for one-way valve according to claim 1, wherein,
Described elastomeric material comprises any one or multiple combination in polyamide, polyurethane, polyolefin, polyolefin derivative thing, Thermoplastic Vulcanizate, fluorine rubber, acrylate rubber, epoxy resin, phenolic resin.
8. the limit element for one-way valve according to claim 1, wherein, described elastomeric material is cross-linked to form by composition, and described composition comprises:
Nitrile butadiene rubber;
Grafting graphite, it comprises graphite granule and is grafted on the grafted moiety on described graphite granule, and described grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
9. the limit element for one-way valve according to claim 8, wherein,
In described composition, the weight percentage of nitrile butadiene rubber is 28% to 60%;
In described composition, the weight percentage of grafting graphite is 2% to 12%.
10. the limit element for one-way valve according to claim 8, wherein,
In described grafting graphite, the weight of relatively described graphite granule, the part by weight of described grafted moiety is 6% to 20%.
11. limit elements for one-way valve according to claim 1, wherein,
The thickness of described elastomer layer is at 0.1 millimeter to 5 millimeters.
12. limit elements for one-way valve according to claim 11, wherein,
The thickness of described elastomer layer is at 0.5 millimeter to 1.5 millimeters.
13. limit elements for one-way valve according to claim 1, wherein,
Described limit element comprises matrix;
Described elastomer layer is at least located at the side of described matrix for contacting with described motor element.
14. limit elements for one-way valve according to claim 13, wherein,
Described elastomer layer bonding on the matrix, and is at least 0.6 Newton/millimeter along the peel stress in 180 degree of directions between described elastomer layer and matrix.
15. limit elements for one-way valve according to claim 13, wherein,
Described elastomer layer on the matrix, and is deviate from required power from described matrix and is at least 30 newton by described elastomer layer cutting ferrule.
16. limit elements for one-way valve according to claim 13, wherein,
The side that described elastomer layer is used for contacting with motor element is provided with rigid layer.
17. limit elements for one-way valve according to claim 16, wherein,
The thickness of described rigid layer is at 0.01 millimeter to 4 millimeters.
18. limit elements for one-way valve according to claim 16, wherein,
Described rigid layer is bonded on described elastomer layer, is at least 0.6 Newton/millimeter between described elastomer layer and rigid layer along the peel stress in 180 degree of directions.
19. limit elements for one-way valve according to claim 1, wherein,
Described one-way valve is for the one-way valve in compressor, and its motor element is valve block, and described valve block comprises the fixing part on the valve body for being connected to one-way valve, and carries out the motion portion that moves for relative valve body;
Described limit element comprises the limited part of the open position for limiting described valve block.
20. limit elements for one-way valve according to claim 19, wherein,
It is convex globoidal that described limited part is used for towards the surface of described valve block side.
21. limit elements for one-way valve according to claim 20, wherein,
When described limit element is located in described one-way valve, point on the direction in motion portion at the fixing part from described valve block, the curvature of described convex globoidal is 1/72 millimeter/mono-to 1/172 millimeter/mono-.
22. 1 kinds of limit elements for compressor one-way valve, it for being arranged on valve block one end of compressor one-way valve, thus limits the open position of described valve block, wherein,
Described limit element arranges elastomer layer in the side for contacting with described valve block, and described elastomer layer is made up of elastomeric material, and described elastomeric material is cross-linked to form by composition, and described composition comprises:
Nitrile butadiene rubber;
Grafting graphite, it comprises graphite granule and is grafted on the grafted moiety on described graphite granule, and described grafted moiety comprises the copolymer group of butadiene and acrylonitrile;
And
In described composition, the weight percentage of nitrile butadiene rubber is 28% to 60%;
In described composition, the weight percentage of grafting graphite is 2% to 12%;
In described grafting graphite, the weight of relatively described graphite granule, the part by weight of described grafted moiety is 6% to 20%.
23. limit elements for compressor one-way valve according to claim 22, wherein,
The thickness of described elastomer layer is at 0.1 millimeter to 5 millimeters;
Described valve block comprises the fixing part on the valve body for being connected to one-way valve, and carries out the motion portion that moves for relative valve body;
Described limit element comprises the limited part of the open position for limiting described valve block, and it is convex globoidal that described limited part is used for towards the surface of described valve block side; When described limit element is located in described one-way valve, point on the direction in motion portion at the fixing part from described valve block, the curvature of described convex globoidal is 1/72 millimeter/mono-to 1/172 millimeter/mono-.
24. 1 kinds of one-way valves, wherein, comprising:
There is the valve body of valve opening;
Be arranged on the motor element on valve body one end, for moving between the closed position closing described valve opening and the open position leaving described valve opening;
Be arranged on the limit element on motor element one end, for limiting the open position of described motor element, and described limit element arranges elastomer layer in the side for contacting with described motor element, and described elastomer layer is made up of elastomeric material.
25. according to one-way valve described in claim 24, and wherein, described elastomeric material is cross-linked to form by composition, and described composition comprises:
Nitrile butadiene rubber;
Grafting graphite, it comprises graphite granule and is grafted on the grafted moiety on described graphite granule, and described grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
26. one-way valves according to claim 24, wherein,
Described one-way valve is the one-way valve for compressor.
27. one-way valves according to claim 26, wherein,
Described valve body comprises first surface, and described valve opening opening on the first surface;
Described motor element is the valve block comprising fixing part and motion portion, and described fixing part connects on the first surface, and described motion portion is used for moving between the closed position covering described valve opening and the open position leaving described valve opening;
Described limit element comprises and is positioned at the limited part of described valve block away from first surface side, and point on the direction in motion portion at the fixing part from described valve block, the distance between described limited part and first surface increases gradually.
28. one-way valves according to claim 27, wherein,
Angle between the tangent plane of described limited part in the position near described first surface and described first surface is at 9 degree to 40 degree.
29. one-way valves according to claim 27, wherein,
Described limited part near the ultimate range between described first surface side and first surface at 3 millimeters to 32 millimeters.
30. 1 kinds of grafting graphite, wherein, comprise graphite granule and be grafted on the grafted moiety on described graphite granule, described grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
31. grafting graphite according to claim 30, wherein,
The weight of relatively described graphite granule, the part by weight of described grafted moiety is 6% to 20%.
32. grafting graphite according to claim 31, wherein,
The weight of relatively described graphite granule, the part by weight of described grafted moiety is 6% to 17%.
33. grafting graphite according to claim 30, wherein,
Described grafted moiety is the butadiene of hydrogenation and the copolymer group of acrylonitrile.
34. grafting graphite according to claim 30, wherein,
Described grafted moiety is the butadiene of end-blocking and the copolymer group of acrylonitrile.
35. grafting graphite according to claim 30, wherein,
The particle diameter of described graphite granule is in 200 nanometer to 5000 nanometers.
The preparation method of 36. 1 kinds of grafting graphite, wherein, comprising:
Carry out functionalized to graphite granule;
Be grafted on described graphite granule by grafted moiety, obtain grafting graphite, wherein, described grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
The preparation method of 37. grafting graphite according to claim 36, wherein, describedly carries out functionalized comprising to graphite granule:
Heat after being mixed with strong oxidizer by graphite granule, make described graphite granule functionalized, wherein, described strong oxidizer is any one in dibenzoyl peroxide, peroxidating two propyl benzene, potassium permanganate.
The preparation method of 38. grafting graphite according to claim 36, wherein, described being grafted to by grafted moiety on described graphite granule comprises:
Described graphite granule is dispersed in DMF, obtains suspension;
The copolymer of butadiene and acrylonitrile, dicyclohexylcarbodiimide are added in described suspension;
Heat described suspension, grafted moiety is grafted on described graphite granule.
39. according to the preparation method of grafting graphite according to claim 38, wherein,
The copolymer of described butadiene and acrylonitrile is the butadiene of hydrogenation and the copolymer of acrylonitrile.
40. according to the preparation method of grafting graphite according to claim 38, wherein,
The copolymer of described butadiene and acrylonitrile is the butadiene of end-blocking and the copolymer of acrylonitrile.
41. according to the preparation method of grafting graphite according to claim 38, wherein,
In described suspension, the weight of relatively described graphite granule, the part by weight of the copolymer of described butadiene and acrylonitrile is 18% to 40%.
42. according to the preparation method of grafting graphite according to claim 38, wherein,
In described suspension, the weight of relatively described graphite granule, the part by weight of described DMF is 350% to 450%, and the part by weight of described dicyclohexylcarbodiimide is 1% to 5%.
43. according to the preparation method of grafting graphite according to claim 38, and wherein, the described suspension of described heating comprises:
At the temperature of 80 degrees Celsius to 100 degrees Celsius, heat described suspension 20 little of 28 hours.
44. 1 kinds of compositions, wherein, comprising:
Nitrile butadiene rubber;
Grafting graphite, it comprises graphite granule and is grafted on the grafted moiety on described graphite granule, and described grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
45. compositions according to claim 44, wherein,
In described composition, the weight percentage of nitrile butadiene rubber is 28% to 60%;
In described composition, the weight percentage of grafting graphite is 2% to 12%.
46. compositions according to claim 45, wherein,
In described composition, the weight percentage of nitrile butadiene rubber is 30% to 50%;
In described composition, the weight percentage of grafting graphite is 3.5% to 7.5%.
47. compositions according to claim 44, wherein, also comprise:
Crosslinking agent.
48. compositions according to claim 47, wherein,
Described crosslinking agent comprise in peroxide crosslinking agent, ester class crosslinking agent, sulphur class crosslinking agent any one or multiple.
49. compositions according to claim 47, wherein,
In described composition, the weight percentage of crosslinking agent is 2.5% to 4%.
50. compositions according to claim 44, wherein, also comprise:
Any one or multiple combination in plasticizing agent, age resister, promoter, filler.
51. compositions according to claim 44, wherein,
Described nitrile butadiene rubber is hydrogenated nitrile-butadiene rubber.
52. 1 kinds of elastomeric materials, it is cross-linked to form by composition, and wherein, described composition comprises:
Nitrile butadiene rubber;
Grafting graphite, it comprises graphite granule and is grafted on the grafted moiety on described graphite granule, and described grafted moiety comprises the copolymer group of butadiene and acrylonitrile.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158765.2A CN104832704B (en) | 2015-04-03 | 2015-04-03 | Limit element, check valve, composition, elastomeric material, grafting graphite and preparation method thereof |
| CN201610990776.1A CN106957469B (en) | 2015-04-03 | 2015-04-03 | Limit element, check valve, composition, elastomeric material, grafting graphite and preparation method thereof |
| PCT/US2016/025500 WO2016161252A1 (en) | 2015-04-03 | 2016-04-01 | Position-limiting element, one-way valve, composition, elastomeric material, grafted graphite, and methods for preparing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158765.2A CN104832704B (en) | 2015-04-03 | 2015-04-03 | Limit element, check valve, composition, elastomeric material, grafting graphite and preparation method thereof |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610990776.1A Division CN106957469B (en) | 2015-04-03 | 2015-04-03 | Limit element, check valve, composition, elastomeric material, grafting graphite and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104832704A true CN104832704A (en) | 2015-08-12 |
| CN104832704B CN104832704B (en) | 2018-08-10 |
Family
ID=53810788
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610990776.1A Expired - Fee Related CN106957469B (en) | 2015-04-03 | 2015-04-03 | Limit element, check valve, composition, elastomeric material, grafting graphite and preparation method thereof |
| CN201510158765.2A Expired - Fee Related CN104832704B (en) | 2015-04-03 | 2015-04-03 | Limit element, check valve, composition, elastomeric material, grafting graphite and preparation method thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610990776.1A Expired - Fee Related CN106957469B (en) | 2015-04-03 | 2015-04-03 | Limit element, check valve, composition, elastomeric material, grafting graphite and preparation method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN106957469B (en) |
| WO (1) | WO2016161252A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626488A (en) * | 2016-01-15 | 2016-06-01 | 泰州职业技术学院 | Sine and cosine linear valve piezoelectric pump |
| CN106089650A (en) * | 2016-07-22 | 2016-11-09 | 佛山市顺德区键合电子有限公司 | A kind of buffer noise reducer for compressor valve plate |
| CN106968920A (en) * | 2017-05-27 | 2017-07-21 | 广东美芝制冷设备有限公司 | Exhaust valve component, compressor and the refrigeration plant of compressor |
| CN108105423A (en) * | 2017-12-11 | 2018-06-01 | 郑州莉迪亚医药科技有限公司 | A kind of star-like cylinder type liquid mixing valve |
| CN108119678A (en) * | 2016-11-28 | 2018-06-05 | 大众汽车有限公司 | Valve cell and the compressor with this valve cell |
| CN108626101A (en) * | 2018-04-28 | 2018-10-09 | 3M创新有限公司 | Check valve assembly and its manufacturing method for compressor |
| CN109185102A (en) * | 2018-11-07 | 2019-01-11 | 韶关市立全机械有限公司 | A kind of anti-corrosion pressure compressor valve plate resistant to high temperature |
| CN109899185A (en) * | 2019-03-12 | 2019-06-18 | 潍柴动力股份有限公司 | A kind of EGR check valve |
| CN109899287A (en) * | 2017-12-11 | 2019-06-18 | 上海海立电器有限公司 | Rotary Compressor, exhaust structure and limiter |
| CN114060328A (en) * | 2021-11-17 | 2022-02-18 | 浙江科力车辆控制系统有限公司 | Hydraulic lifting device with oil tank non-return back pressure valve |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220177633A1 (en) * | 2019-05-29 | 2022-06-09 | Kao Corporation | Thermoplastic resin composition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3939867A (en) * | 1971-08-02 | 1976-02-24 | Stal-Refrigeration Ab | Valve for compressors |
| JPH05272472A (en) * | 1992-03-24 | 1993-10-19 | Mitsubishi Electric Corp | Scroll compressor |
| CN103415701A (en) * | 2011-03-08 | 2013-11-27 | 三电有限公司 | Valve device for compressor |
| CN104033632A (en) * | 2013-03-07 | 2014-09-10 | 北京华德创业环保设备有限公司 | Flexible valve clack check valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5327932A (en) * | 1993-04-19 | 1994-07-12 | Thomas Industries Inc. | Valve restraint enhancement |
| US5884665A (en) * | 1998-05-19 | 1999-03-23 | General Motors Corporation | Air conditioning reed valve support seat |
| DE102011009214A1 (en) * | 2011-01-22 | 2012-07-26 | Volkswagen Ag | Non-return valve i.e. flutter valve, has stopping element whose stop surface extends parallel to bending line of spring tongue in deflected state, where elastic deformation of tongue is limited by striking tongue against stop surface |
| CN102586951B (en) * | 2012-01-18 | 2013-08-07 | 浙江大学 | Preparation method for composite carbon fiber based on graphene/ polyacrylonitrile |
| CN104194248A (en) * | 2014-09-10 | 2014-12-10 | 厦门凯纳石墨烯技术有限公司 | Method for in-situ modification of ABS (acrylonitrile-butadiene-styrene) resin by graphene |
-
2015
- 2015-04-03 CN CN201610990776.1A patent/CN106957469B/en not_active Expired - Fee Related
- 2015-04-03 CN CN201510158765.2A patent/CN104832704B/en not_active Expired - Fee Related
-
2016
- 2016-04-01 WO PCT/US2016/025500 patent/WO2016161252A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3939867A (en) * | 1971-08-02 | 1976-02-24 | Stal-Refrigeration Ab | Valve for compressors |
| JPH05272472A (en) * | 1992-03-24 | 1993-10-19 | Mitsubishi Electric Corp | Scroll compressor |
| CN103415701A (en) * | 2011-03-08 | 2013-11-27 | 三电有限公司 | Valve device for compressor |
| CN104033632A (en) * | 2013-03-07 | 2014-09-10 | 北京华德创业环保设备有限公司 | Flexible valve clack check valve |
Non-Patent Citations (1)
| Title |
|---|
| 桂强等: "丁腈橡胶复合材料的研究进展", 《合肥橡胶工业》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626488B (en) * | 2016-01-15 | 2017-11-24 | 泰州职业技术学院 | The linear valve piezoelectric pump of sine and cosine |
| CN105626488A (en) * | 2016-01-15 | 2016-06-01 | 泰州职业技术学院 | Sine and cosine linear valve piezoelectric pump |
| CN106089650A (en) * | 2016-07-22 | 2016-11-09 | 佛山市顺德区键合电子有限公司 | A kind of buffer noise reducer for compressor valve plate |
| CN108119678A (en) * | 2016-11-28 | 2018-06-05 | 大众汽车有限公司 | Valve cell and the compressor with this valve cell |
| CN106968920A (en) * | 2017-05-27 | 2017-07-21 | 广东美芝制冷设备有限公司 | Exhaust valve component, compressor and the refrigeration plant of compressor |
| CN109899287A (en) * | 2017-12-11 | 2019-06-18 | 上海海立电器有限公司 | Rotary Compressor, exhaust structure and limiter |
| CN108105423A (en) * | 2017-12-11 | 2018-06-01 | 郑州莉迪亚医药科技有限公司 | A kind of star-like cylinder type liquid mixing valve |
| CN109899287B (en) * | 2017-12-11 | 2024-06-28 | 上海海立电器有限公司 | Rotary compressor, exhaust structure and limiter |
| CN108626101A (en) * | 2018-04-28 | 2018-10-09 | 3M创新有限公司 | Check valve assembly and its manufacturing method for compressor |
| CN109185102A (en) * | 2018-11-07 | 2019-01-11 | 韶关市立全机械有限公司 | A kind of anti-corrosion pressure compressor valve plate resistant to high temperature |
| CN109185102B (en) * | 2018-11-07 | 2024-05-10 | 广东立全智造阀片有限公司 | Corrosion-resistant, pressure-resistant and high-temperature-resistant compressor valve plate |
| CN109899185A (en) * | 2019-03-12 | 2019-06-18 | 潍柴动力股份有限公司 | A kind of EGR check valve |
| CN114060328A (en) * | 2021-11-17 | 2022-02-18 | 浙江科力车辆控制系统有限公司 | Hydraulic lifting device with oil tank non-return back pressure valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104832704B (en) | 2018-08-10 |
| CN106957469B (en) | 2018-11-23 |
| WO2016161252A1 (en) | 2016-10-06 |
| CN106957469A (en) | 2017-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104832704A (en) | Limiting element, one-way valve, composition, elastomer material, and grafting graphite and preparation method thereof | |
| WO2012026415A1 (en) | Contact component with reduced squeak noise made from thermoplastic resin composition | |
| EP1302507B1 (en) | Thermoplastic elastomer composition, moldings using the same | |
| JP5729914B2 (en) | Automotive interior parts with reduced squeaking noise | |
| CN1978008A (en) | Golf club head | |
| WO2005097887A8 (en) | Thermoplastic elastomeric material comprising a vulcanized rubber in a subdivided form | |
| WO2005067562A3 (en) | Toughened polymer compositions | |
| CN1246377C (en) | Polymer compsn. | |
| AU2019272038A1 (en) | Rubber composition for tennis ball | |
| JP2008007546A (en) | Vibration-insulating rubber composition and vibration-insulating rubber | |
| JP2015157950A (en) | Thermoplastic resin composition and molded article | |
| JP5848867B2 (en) | Automotive interior parts with reduced squeaking noise | |
| JP2010043166A (en) | Rubber composition for tread and tire using it | |
| JP2006057003A (en) | Heat-resistant rubber composition | |
| JP2018177009A (en) | Rubber crawler | |
| JP6530836B2 (en) | Thermoplastic resin composition and molded article | |
| WO2023195167A1 (en) | Shoe sole member and shoe | |
| CN1789326A (en) | High-damping oil-resistant rubber composition | |
| MX2022012141A (en) | Steel sheet, member, and methods for manufacturing these. | |
| JPWO2019117155A1 (en) | Anti-vibration rubber composition and anti-vibration rubber | |
| JP6108123B2 (en) | Rubber bearing | |
| JP6110424B2 (en) | Thermoplastic resin composition and molded article | |
| JP2015042752A (en) | Contact component made of thermoplastic resin composition in which squeak sound is reduced | |
| JP6960086B2 (en) | Rubber composition for fender | |
| JP5101807B2 (en) | Composition for vibration absorber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180810 Termination date: 20210403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |