CN117922106B - Corrosion-resistant composite hose for hose pump and preparation process thereof - Google Patents
Corrosion-resistant composite hose for hose pump and preparation process thereof Download PDFInfo
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- CN117922106B CN117922106B CN202410091686.3A CN202410091686A CN117922106B CN 117922106 B CN117922106 B CN 117922106B CN 202410091686 A CN202410091686 A CN 202410091686A CN 117922106 B CN117922106 B CN 117922106B
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- 239000002131 composite material Substances 0.000 title claims abstract description 30
- 238000005260 corrosion Methods 0.000 title claims abstract description 13
- 230000007797 corrosion Effects 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 83
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 49
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 49
- 229920001194 natural rubber Polymers 0.000 claims abstract description 49
- 229920001938 Vegetable gum Polymers 0.000 claims abstract description 32
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000003607 modifier Substances 0.000 claims abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 52
- 229910052757 nitrogen Inorganic materials 0.000 claims description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 12
- 238000010926 purge Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000002041 carbon nanotube Substances 0.000 claims description 9
- 239000012467 final product Substances 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000009210 therapy by ultrasound Methods 0.000 claims description 9
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 8
- 229910021389 graphene Inorganic materials 0.000 claims description 8
- 238000005498 polishing Methods 0.000 claims description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 8
- 239000003093 cationic surfactant Substances 0.000 claims description 7
- 239000000047 product Substances 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 239000012670 alkaline solution Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 5
- 229920001046 Nanocellulose Polymers 0.000 claims description 5
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 5
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 4
- 235000010985 glycerol esters of wood rosin Nutrition 0.000 claims description 4
- SATHPVQTSSUFFW-UHFFFAOYSA-N 4-[6-[(3,5-dihydroxy-4-methoxyoxan-2-yl)oxymethyl]-3,5-dihydroxy-4-methoxyoxan-2-yl]oxy-2-(hydroxymethyl)-6-methyloxane-3,5-diol Chemical compound OC1C(OC)C(O)COC1OCC1C(O)C(OC)C(O)C(OC2C(C(CO)OC(C)C2O)O)O1 SATHPVQTSSUFFW-UHFFFAOYSA-N 0.000 claims description 3
- 239000001904 Arabinogalactan Substances 0.000 claims description 3
- 229920000189 Arabinogalactan Polymers 0.000 claims description 3
- 241000416162 Astragalus gummifer Species 0.000 claims description 3
- 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 3
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 3
- 229920002907 Guar gum Polymers 0.000 claims description 3
- 229920001615 Tragacanth Polymers 0.000 claims description 3
- 235000019312 arabinogalactan Nutrition 0.000 claims description 3
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 3
- 125000002091 cationic group Chemical group 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000000665 guar gum Substances 0.000 claims description 3
- 235000010417 guar gum Nutrition 0.000 claims description 3
- 229960002154 guar gum Drugs 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 239000000196 tragacanth Substances 0.000 claims description 3
- 235000010487 tragacanth Nutrition 0.000 claims description 3
- 229940116362 tragacanth Drugs 0.000 claims description 3
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 2
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 claims description 2
- 229920000180 alkyd Polymers 0.000 claims description 2
- 239000000839 emulsion Substances 0.000 claims description 2
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 2
- URXQDXAVUYKSCK-UHFFFAOYSA-N hexadecyl(dimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[NH+](C)C URXQDXAVUYKSCK-UHFFFAOYSA-N 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000012299 nitrogen atmosphere Substances 0.000 claims 1
- 238000007781 pre-processing Methods 0.000 claims 1
- 229920001971 elastomer Polymers 0.000 abstract description 10
- 239000003513 alkali Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 239000002253 acid Substances 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 7
- 241000196324 Embryophyta Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005844 autocatalytic reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000012668 chain scission Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/042—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/12—Layered products comprising a layer of natural or synthetic rubber comprising natural rubber
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J105/00—Adhesives based on polysaccharides or on their derivatives, not provided for in groups C09J101/00 or C09J103/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/02—2 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/248—All polymers belonging to those covered by group B32B25/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/51—Elastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2597/00—Tubular articles, e.g. hoses, pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a corrosion-resistant composite hose for a hose pump and a preparation process thereof, and belongs to the technical field of composite hoses. The light composite rubber hose has the performance of resisting chemical products, especially acid and alkali solutions, and is a new product for metal and rubber tubes. In order to adapt to the place with higher mobility, the composite hose has good positive and negative pressure resistance and better pressure resistance than the rubber tube with the same specification under the same condition. According to the invention, the outer layer natural rubber NR is modified, and the viscosity and strength of the natural rubber are improved by adding the modifier for mixing and grafting the maleic anhydride on the surface, so that the prepared composite hose can withstand repeated extrusion and has better rebound resilience; the vegetable gum is modified to ensure that the vegetable gum has oxidation resistance, so that the prepared composite hose is not easy to age, and the service life of the hose is prolonged; by pre-treating the surface of the thermoplastic elastomer TPE of the inner layer, the adhesion degree between the inner layer and the outer layer is also improved by improving the roughness.
Description
Technical Field
The invention belongs to the technical field of composite hoses, and relates to a corrosion-resistant composite hose for a hose pump and a preparation process thereof.
Background
The hose pump has excellent self-priming capability, and can generate perfect vacuum to suck liquid; conveying the gas-containing liquid and the foam liquid without air resistance; delivering a high viscosity, shear sensitive medium; the fixed displacement per revolution, independent of the outlet pressure, is an excellent metering pump. Various advantages make hose pumps more and more widely applied to industries such as gold smelting, nonferrous smelting, chemical industry, mining, food processing, brewing, ceramic, water treatment and the like. The hose of the hose pump is a core component of the hose pump, and the service life of the hose pump is directly related to the use cost and the use effect of the pump, so that the use effect of the hose pump can be effectively improved by a good composite hose.
The rubber hose is widely applied to the fields of construction, various hydraulic engineering machines, petrifaction, oil fields, ships, metallurgy, agriculture, mines and the like, for military use and hair, mainly because the rubber hose has relatively good heat resistance and ageing resistance, high strength bearing force and relatively excellent pulse performance and vibration damping performance.
The composite rubber hose has good acid and alkali resistance, the light composite hose has chemical resistance, and especially has better acid and alkali resistance than metal pipes and rubber pipes, and is a new product for metal and rubber pipes. In order to adapt to places with larger mobility, the composite hose has good positive and negative pressure resistance and better pressure resistance than rubber tubes with the same specification under the same condition.
Disclosure of Invention
The invention aims to provide a corrosion-resistant composite hose for a hose pump and a preparation process thereof, and the corrosion-resistant composite hose has the characteristics of corrosion resistance and good strength.
The aim of the invention can be achieved by the following technical scheme:
a corrosion-resistant composite hose for a hose pump comprises an outer layer of modified natural rubber NR and an inner layer of thermoplastic elastomer TPE, wherein the natural rubber is modified by the following steps,
S11: according to parts by weight, 60-70 parts of natural rubber, 5-10 parts of carbon nano tube, 5-10 parts of graphene oxide, 3-5 parts of nano cellulose, 5-10 parts of tackifier and 5-10 parts of silane coupling agent are heated to 100 ℃ to make the natural rubber in a molten state, then modifier is added according to the proportion, fully mixed and uniformly stirred, and the temperature is reduced to 80 ℃ at 5 ℃/min;
s12: adding maleic anhydride into the product of S11 at 80 ℃ to carry out grafting reaction, wherein the mass ratio of the product of S1 to the maleic anhydride is 2:1, adding 3wt% of dibenzoyl peroxide, uniformly mixing, heating to 90 ℃, stirring and reacting for 2 hours, passing the obtained mixture through a die, and cooling and shaping to obtain the modified natural rubber.
The natural rubber has high mechanical strength, good flexural fatigue resistance, small hysteresis loss, low heat generation during multiple deformation, good cold resistance, good air tightness, water resistance, electrical insulation and heat insulation, good elasticity, elastic modulus of about 1/30000 of steel and elongation of 300 times of steel; however, natural rubber contains unsaturated double bonds, so that the natural rubber is active in chemical property, and easily undergoes chain reaction of autocatalysis oxidation with oxygen in air, so that molecular chain scission or excessive crosslinking is caused, and rubber is adhered or cracked.
Carbon Nanotubes (CNTs) have high specific surface area, agglomeration is easy to occur, dispersion is difficult in a matrix, and Graphene Oxide (GO) can be used as a dispersing agent, and has a lattice structure similar to graphene, and CNTs can be stably dispersed through pi-pi stacking interaction between GO and CNTs, so that the strength of natural rubber can be effectively improved by adding the carbon nanotubes and the graphene oxide.
The nano-cellulose not only has the characteristics of renewable and biodegradable natural cellulose, but also has the advantages of large specific surface area, high hydrophilicity, high transparency, high strength, high Young modulus, low thermal expansion coefficient and the like.
By improving the strength of the natural rubber, the finally prepared composite hose can withstand repeated extrusion and has better rebound resilience.
Further, the tackifier is one or more of resin emulsion, 45% oil degree oil modified alkyd and rosin ester gum.
The tackifier wets the bonding surface through surface diffusion or internal diffusion, so that the bonding strength of the natural rubber is improved, the tackifier must have similar solubility parameters with the polymer to be tackified, and the solubility parameter of the natural rubber is 7.9, so that the tackifier similar to the solubility parameter of the natural rubber is added in the invention, and rosin ester adhesive is preferable in the invention, and the solubility parameter is 7.4-10.8.
Further, the silane coupling agent is one or more of vinyl triethoxysilane, gamma-aminopropyl triethoxysilane and vinyl trimethoxysilane.
Further, the surface of the thermoplastic elastomer TPE is pretreated, the thermoplastic elastomer TPE is heated to be softened at the temperature of 100 ℃, and then a pneumatic polisher is used for polishing the surface of the TPE by compressed air at the rotating speed of 4500-5000 r/min.
The roughness of the surface of the thermoplastic elastomer TPE is improved through the pneumatic grinding machine, so that the adhesion strength between the thermoplastic elastomer TPE and the natural rubber NR is improved.
A process for preparing the anticorrosion composite hose used for hose pump includes such steps as adhering the modified natural rubber NR on external layer to the thermoplastic elastomer TPE on internal layer by modified plant gum,
S51: the inner layer thermoplastic elastomer TPE subjected to surface pretreatment is dried for 4 hours at 50 ℃, and then purged for 30 minutes by nitrogen,
S52: dissolving the modified vegetable gum powder in water, carrying out ultrasonic treatment for 1h, and uniformly spraying the completely dissolved modified vegetable gum on the surface of TPE;
s53: drying the outer layer modified natural rubber NR for 4 hours at 50 ℃, purging with nitrogen for 30 minutes, and adhering the outer layer modified natural rubber NR to the surface of TPE;
s54: curing was carried out at room temperature and left under nitrogen for 24 hours to give the final product.
Furthermore, the preparation process of the modified vegetable gum is as follows,
S61: adding the alkaline solution into the alkaline solution in a volume ratio of 1:1 arabinogalactan and tragacanth, mixing well, heating to 120deg.C;
S62: stirring for 2h at a rotation speed of 300-400rpm, adding 1wt% of cationic surfactant, and continuing stirring for 2h;
s63: the mixture was filtered, washed with ethanol solution, dried at 110 ℃ for 12h, and ground to powder to obtain a modified vegetable gum.
Further, the alkali liquor is one or more of sodium hydroxide, potassium hydroxide and sodium bicarbonate.
Further, the cationic surfactant is one or more of cetyl dimethyl ammonium chloride, cetyl trimethyl ammonium bromide, stearyl trimethyl ammonium chloride and cationic guar gum.
The plant gum is modified, and the activity of the plant gum is improved by introducing positive charges, so that the plant gum becomes a very effective antioxidant, the prepared composite hose is not easy to age, and the service life of the hose is prolonged.
The invention has the beneficial effects that:
according to the invention, the outer layer natural rubber NR is modified, and the viscosity and strength of the natural rubber are improved by adding the modifier for mixing and grafting the maleic anhydride on the surface, so that the prepared composite hose can withstand repeated extrusion and has better rebound resilience;
According to the invention, the vegetable gum is modified to ensure that the vegetable gum has oxidation resistance, so that the prepared composite hose is not easy to age, and the service life of the hose is prolonged;
according to the invention, the surface of the thermoplastic elastomer TPE of the inner layer is pretreated, and the adhesion degree between the inner layer and the outer layer is improved by improving the roughness.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description is given below with reference to the embodiments, structures, features and effects according to the present invention.
The natural rubber is modified by the following steps:
S11: according to parts by weight, 60-70 parts of natural rubber, 5-10 parts of carbon nano tube, 5-10 parts of graphene oxide, 3-5 parts of nano cellulose, 5-10 parts of tackifier and 5-10 parts of silane coupling agent are heated to 100 ℃ to make the natural rubber in a molten state, then modifier is added according to the proportion, fully mixed and uniformly stirred, and the temperature is reduced to 80 ℃ at 5 ℃/min;
s12: adding maleic anhydride into the product of S11 at 80 ℃ to carry out grafting reaction, wherein the mass ratio of the product of S1 to the maleic anhydride is 2:1, adding 3wt% of dibenzoyl peroxide, uniformly mixing, heating to 90 ℃, stirring and reacting for 2 hours, passing the obtained mixture through a die, and cooling and shaping to obtain the modified natural rubber.
Modified natural rubber 1: 70 parts of natural rubber, 5 parts of carbon nano tube, 5 parts of graphene oxide, 5 parts of nano cellulose, 5 parts of rosin ester gum and 10 parts of vinyl trimethoxy silane.
Modified natural rubber 2: 60 parts of natural rubber, 10 parts of carbon nano tube, 10 parts of graphene oxide, 5 parts of nano cellulose, 10 parts of rosin ester gum and 5 parts of vinyl trimethoxy silane.
The plant gum modification steps are as follows:
S61: adding the alkaline solution into the alkaline solution in a volume ratio of 1:1 arabinogalactan and tragacanth, mixing well, heating to 120deg.C;
S62: stirring for 2h at a rotation speed of 300-400rpm, adding 1wt% of cationic surfactant, and continuing stirring for 2h;
s63: the mixture was filtered, washed with ethanol solution, dried at 110 ℃ for 12h, and ground to powder to obtain a modified vegetable gum.
Modified vegetable gum 1: cetyl trimethylammonium bromide was used as cationic surfactant.
Modified vegetable gum 2: cationic guar gum is used as cationic surfactant.
Example 1
S51: drying the inner thermoplastic elastomer TPE subjected to surface pretreatment at 50 ℃ for 4 hours, purging with nitrogen for 30 minutes, heating the thermoplastic elastomer TPE at 100 ℃ until the surface is softened, and polishing the surface of the TPE with compressed air at a rotation speed of 5000r/min by using a pneumatic polisher;
S52: dissolving the modified vegetable gum powder 1 in water, carrying out ultrasonic treatment for 1h, and uniformly spraying the completely dissolved modified vegetable gum on the surface of TPE;
S53: drying the external modified natural rubber 1 at 50 ℃ for 4 hours, purging with nitrogen for 30 minutes, and adhering the external modified natural rubber 1 to the surface of TPE;
s54: curing was carried out at room temperature and left under nitrogen for 24 hours to give the final product.
Example 2
S51: drying the inner thermoplastic elastomer TPE subjected to surface pretreatment at 50 ℃ for 4 hours, purging with nitrogen for 30 minutes, heating the thermoplastic elastomer TPE at 100 ℃ until the surface is softened, and polishing the surface of the TPE with compressed air at a rotation speed of 5000r/min by using a pneumatic polisher;
S52: dissolving the modified vegetable gum powder 1 in water, carrying out ultrasonic treatment for 1h, and uniformly spraying the completely dissolved modified vegetable gum on the surface of TPE;
S53: the external modified natural rubber 2 is dried for 4 hours at 50 ℃, purged for 30 minutes by nitrogen, and adhered to the surface of TPE;
s54: curing was carried out at room temperature and left under nitrogen for 24 hours to give the final product.
Example 3
S51: drying the inner thermoplastic elastomer TPE subjected to surface pretreatment at 50 ℃ for 4 hours, purging with nitrogen for 30 minutes, heating the thermoplastic elastomer TPE at 100 ℃ until the surface is softened, and polishing the surface of the TPE with compressed air at a rotation speed of 5000r/min by using a pneumatic polisher;
s52: dissolving the modified vegetable gum powder 2 in water, carrying out ultrasonic treatment for 1h, and uniformly spraying the completely dissolved modified vegetable gum on the surface of TPE;
S53: drying the external modified natural rubber 1 at 50 ℃ for 4 hours, purging with nitrogen for 30 minutes, and adhering the external modified natural rubber 1 to the surface of TPE;
s54: curing was carried out at room temperature and left under nitrogen for 24 hours to give the final product.
Example 4
S51: drying the inner thermoplastic elastomer TPE subjected to surface pretreatment at 50 ℃ for 4 hours, purging with nitrogen for 30 minutes, heating the thermoplastic elastomer TPE at 100 ℃ until the surface is softened, and polishing the surface of the TPE with compressed air at a rotation speed of 5000r/min by using a pneumatic polisher;
s52: dissolving the modified vegetable gum powder 2 in water, carrying out ultrasonic treatment for 1h, and uniformly spraying the completely dissolved modified vegetable gum on the surface of TPE;
S53: the external modified natural rubber 2 is dried for 4 hours at 50 ℃, purged for 30 minutes by nitrogen, and adhered to the surface of TPE;
s54: curing was carried out at room temperature and left under nitrogen for 24 hours to give the final product.
Comparative example 1
S51: drying the inner thermoplastic elastomer TPE subjected to surface pretreatment at 50 ℃ for 4 hours, purging with nitrogen for 30 minutes, heating the thermoplastic elastomer TPE at 100 ℃ until the surface is softened, and polishing the surface of the TPE with compressed air at a rotation speed of 5000r/min by using a pneumatic polisher;
S52: dissolving the modified vegetable gum powder 1 in water, carrying out ultrasonic treatment for 1h, and uniformly spraying the completely dissolved modified vegetable gum on the surface of TPE;
S53: drying the outer natural rubber for 4 hours at 50 ℃, and purging with nitrogen for 30 minutes to adhere the outer natural rubber to the surface of TPE;
s54: curing was carried out at room temperature and left under nitrogen for 24 hours to give the final product.
The present comparative example does not modify the outer natural rubber.
Comparative example 2
S51: drying the inner thermoplastic elastomer TPE subjected to surface pretreatment at 50 ℃ for 4 hours, purging with nitrogen for 30 minutes, heating the thermoplastic elastomer TPE at 100 ℃ until the surface is softened, and polishing the surface of the TPE with compressed air at a rotation speed of 5000r/min by using a pneumatic polisher;
s52: dissolving the vegetable gum in water, carrying out ultrasonic treatment for 1h, and uniformly spraying the completely dissolved modified vegetable gum on the surface of TPE;
S53: the external modified natural rubber 2 is dried for 4 hours at 50 ℃, purged for 30 minutes by nitrogen, and adhered to the surface of TPE;
s54: curing was carried out at room temperature and left under nitrogen for 24 hours to give the final product.
The comparative example did not modify the vegetable gums.
Comparative example 3
S51: the inner thermoplastic elastomer TPE is dried for 4 hours at 50 ℃ and purged for 30 minutes by nitrogen;
S52: dissolving the modified vegetable gum powder 1 in water, carrying out ultrasonic treatment for 1h, and uniformly spraying the completely dissolved modified vegetable gum on the surface of TPE;
S53: the external modified natural rubber 2 is dried for 4 hours at 50 ℃, purged for 30 minutes by nitrogen, and adhered to the surface of TPE;
s54: curing was carried out at room temperature and left under nitrogen for 24 hours to give the final product.
This comparative example does not have a surface grinding pretreatment of the inner thermoplastic elastomer TPE.
By way of experiment, the data of examples and comparative examples are collated in the following table,
According to experimental data, in the invention, the composite hose prepared from the modified vegetable gum 1 and the modified natural rubber 2 has the most excellent performance, and in addition, the surface pretreatment of the thermoplastic elastomer is beneficial to the performance of the composite hose.
The invention is used when in use:
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (5)
1. A corrosion-resistant composite hose for hose pumps, characterized in that it comprises an outer layer of modified natural rubber NR, and an inner layer of thermoplastic elastomer TPE,
Wherein the natural rubber is modified as follows,
S11: according to parts by weight, 60-70 parts of natural rubber, 5-10 parts of carbon nano tubes, 5-10 parts of graphene oxide, 3-5 parts of nano cellulose, 5-10 parts of tackifier and 5-10 parts of silane coupling agent are heated to 100 ℃ to enable the natural rubber to be in a molten state, then modifier is added according to a proportion, fully mixed and uniformly stirred, and the temperature is reduced to 80 ℃ at 5 ℃/min;
s12: adding maleic anhydride into the product of S11 at 80 ℃ to carry out grafting reaction, wherein the mass ratio of the product of S11 to the maleic anhydride is 2:1, adding 3 wt% of dibenzoyl peroxide, uniformly mixing, heating to 90 ℃, stirring and reacting for 2 hours, and cooling and shaping the obtained mixture through a die to obtain modified natural rubber;
the method comprises the steps of preprocessing the surface of a thermoplastic elastomer TPE, heating the thermoplastic elastomer TPE to soften the surface at 100 ℃, and polishing the TPE surface with compressed air at a rotating speed of 4500-5000 r/min by using a pneumatic polisher;
the composite hose adopts modified vegetable gum to bond the outer layer modified natural rubber NR and the inner layer thermoplastic elastomer TPE, the flow is as follows,
S51: drying the surface-pretreated inner thermoplastic elastomer TPE at 50 ℃ for 4 hours, and then purging 30 min by using nitrogen;
s52: dissolving the modified vegetable gum powder in water, carrying out ultrasonic treatment for 1h, and uniformly spraying the completely dissolved modified vegetable gum on the surface of TPE;
s53: drying the outer layer modified natural rubber NR for 4 hours at 50 ℃, purging with nitrogen for 30 minutes, and adhering the outer layer modified natural rubber NR to the surface of TPE;
s54: solidifying at room temperature, and standing for 24 hours in nitrogen atmosphere to obtain a final product;
wherein, the preparation flow of the modified vegetable gum in S52 is as follows,
S61: adding the alkaline solution into the alkaline solution in a volume ratio of 1:1 arabinogalactan and tragacanth, mixing well, heating to 120deg.C;
s62: stirring for 2h at a rotation speed of 300-400 rpm, adding 1-wt% cationic surfactant, and continuing stirring for 2h;
S63: the mixture was filtered, washed with ethanol solution, dried at 110 ℃ for 12h, and ground to powder to obtain a modified vegetable gum.
2. The corrosion resistant composite hose for a hose pump of claim 1, wherein the tackifier is one or more of a resin emulsion, 45% oil length modified alkyd, rosin ester gum.
3. The corrosion resistant composite hose for a hose pump of claim 1, wherein the silane coupling agent is one or more of vinyltriethoxysilane, γ -aminopropyl triethoxysilane, vinyltrimethoxysilane.
4. The corrosion-resistant composite hose for hose pumps according to claim 1, wherein the lye in S61 is one or more of sodium hydroxide, potassium hydroxide, sodium bicarbonate.
5. A corrosion resistant composite hose for use with a hose pump according to claim 1, wherein the cationic surfactant in S62 is one or more of cetyldimethyl ammonium chloride, cetyltrimethylammonium bromide, octadecyl trimethyl ammonium chloride, cationic guar gum.
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| CN106170386A (en) * | 2014-08-22 | 2016-11-30 | 五行科技股份有限公司 | For exploiting fracturing liquid delivery hose and the manufacture method thereof of shale oil gas |
| CN115073826A (en) * | 2022-06-16 | 2022-09-20 | 中北大学 | High-wear-resistance graphene modified natural rubber and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106170386A (en) * | 2014-08-22 | 2016-11-30 | 五行科技股份有限公司 | For exploiting fracturing liquid delivery hose and the manufacture method thereof of shale oil gas |
| CN115073826A (en) * | 2022-06-16 | 2022-09-20 | 中北大学 | High-wear-resistance graphene modified natural rubber and preparation method thereof |
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