CN111959092A - Wear-resistant rubber for slurry pump and production process thereof - Google Patents
Wear-resistant rubber for slurry pump and production process thereof Download PDFInfo
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- CN111959092A CN111959092A CN202010234418.4A CN202010234418A CN111959092A CN 111959092 A CN111959092 A CN 111959092A CN 202010234418 A CN202010234418 A CN 202010234418A CN 111959092 A CN111959092 A CN 111959092A
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- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- 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
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- 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
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- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
- C08L19/003—Precrosslinked rubber; Scrap rubber; Used vulcanised rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
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- 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
- B32B2307/554—Wear resistance
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- 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
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Abstract
The invention relates to the technical field of wear-resistant rubber for slurry pumps, and discloses wear-resistant rubber for the slurry pumps and a production process thereof, wherein the wear-resistant rubber consists of an inner common layer and an outer wear-resistant layer, the outer wear-resistant layer is formed by mixing and compression molding of wear-resistant rubber particles, reinforcing fibers and graphite powder particles, the inner common layer is formed by mixing and compression molding of old rubber particles and reinforcing fibers, and the wear-resistant rubber particles comprise the following components in parts by mass: natural rubber: 80-100 parts of a binder; carbon black: 40-60 parts; nano montmorillonite powder: 5-9 parts of a solvent; zinc oxide: 4-8 parts; antioxidant: 3-7 parts; mildew-proof antibacterial agent: 3-6 parts; accelerator (b): 3-4 parts; sulfur: 2-3 parts of a solvent; stearic acid: 2-4; toner: 15-25 parts. The wear-resistant rubber for the slurry pump has the advantages that the wear-resistant effect is better, the service life is longer, and the cost of the wear-resistant rubber for the whole slurry pump is reduced by adopting the recycled old rubber as the raw material of the inner common layer.
Description
Technical Field
The invention relates to the technical field of wear-resistant rubber for slurry pumps, in particular to wear-resistant rubber for slurry pumps and a production process thereof.
Background
At present, a slurry pump is important equipment for pipeline transportation of liquid media containing suspended particles in the industries of mines, metallurgy, chemical industry and the like, and an impeller, a guard plate and a sheath (comprising a front sheath and a rear sheath) flow passage part are important components of the slurry pump, and the components belong to easily-worn parts. At present, the main domestic manufacturers still adopt alloy wear-resistant metal flow-through pieces. Due to the abrasion and corrosion of the conveying medium, the alloy iron casting has the problems of quick abrasion, high energy consumption, large maintenance amount, short service life and the like.
The wear-resistant rubber for the slurry pump in the prior art is produced by adopting a wear-resistant technology, and people know that the surface of the wear-resistant rubber sleeve sleeved with the impeller can not be in contact with fluid at all, so that the wear can not be generated, the cost of the wear-resistant rubber sleeve is high, and the enterprise benefit is reduced.
Disclosure of Invention
The invention aims to provide wear-resistant rubber for a slurry pump and a production process thereof, and solves the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a wear-resisting rubber for slurry pump and production technology thereof, wear-resisting rubber comprises interior ordinary layer and outer wear-resisting layer, outer wear-resisting layer is by the mixed compression molding of wear-resisting rubber granule, reinforcing fiber and graphite powder granule, and interior ordinary layer is by the mixed compression molding with reinforcing fiber in the place of old rubber granule, the composition quality component of wear-resisting rubber granule is: natural rubber: 80-100 parts of a binder; carbon black: 40-60 parts; nano montmorillonite powder: 5-9 parts of a solvent; zinc oxide: 4-8 parts; antioxidant: 3-7 parts; mildew-proof antibacterial agent: 3-6 parts; accelerator (b): 3-4 parts; sulfur: 2-3 parts of a solvent; stearic acid: 2-4; toner: 15-25 parts.
Preferably, the thicknesses of the outer wear-resistant layer and the inner common layer are respectively 4mm and 2 mm.
Preferably, the graphite powder particles are crushed and dried and then plasticated and mixed with the wear-resistant rubber particles of the outer wear-resistant layer.
Preferably, the reinforcing fiber may be one of nylon, aramid, carbon fiber, glass fiber, and steel cord.
Preferably, the used rubber particles are obtained by crushing, kneading, and then kneading and molding the crushed and recycled rubber with the reinforcing fibers.
Preferably, the inner common layer and the outer wear-resistant layer are fixedly bonded through rubber glue.
Preferably, the mixing mass ratio of the wear-resistant rubber particles, the reinforcing fibers and the graphite powder particles is 5: 2:3.
Preferably, the mildew-proof antibacterial agent is at least one of benzimidazole methyl carbamate, 2-benzisothiazolin-3-one and 1, 2-benzisothiazolin-3-one derivatives.
The preparation method of the wear-resistant rubber for the slurry pump comprises the following steps of:
step 1: and (2) discharging and cooling the rubber particles and the graphite powder particles to 80 ℃ after the rubber particles and the graphite powder particles are kept in a smelting furnace at 160-190 ℃ for 1-3 hours: discharging the old rubber particles to a cold area to 80 ℃ at the temperature of 150-170 ℃ for 0.5-2 hours;
step 2: placing standby fluid rubber, reinforcing fibers and graphite powder particles in a mold, and performing compression molding under the conditions that the pressure is 15-19 MPa and the temperature is 160 ℃ to form an outer wear-resistant layer;
and step 3: placing the rubber and the reinforced fibers after the rubber particles are smelted in a mold, and performing compression molding under the conditions of the pressure of 7-14 MPa and the temperature of 160 ℃ to form an inner common layer;
and 4, step 4: and (3) smearing special rubber glue outside the inner common layer, and then sleeving the cooled outer wear-resistant layer on the cooled inner common layer for press bonding by a press machine.
Compared with the prior art, the invention has the following beneficial effects:
the wear-resistant rubber for the slurry pump has the advantages that the wear-resistant effect is better, the service life is longer, and the cost of the wear-resistant rubber for the whole slurry pump is reduced by adopting the recycled old rubber as the raw material of the inner common layer.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural diagram of the whole mass part of the wear-resistant rubber for the slurry pump and the production process thereof;
FIG. 2 is a schematic structural diagram of a wear-resistant rubber for a slurry pump and a production process of a wear-resistant layer rubber of the production process of the wear-resistant rubber.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention; in the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can, for example, be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a technical scheme that: the utility model provides a wear-resisting rubber for slurry pump and production technology thereof, wear-resisting rubber comprises interior ordinary layer and outer wear-resisting layer, and outer wear-resisting layer is by the mixed compression molding of wear-resisting rubber granule, reinforcing fiber and graphite powder granule, and interior ordinary layer is by the mixed compression molding with reinforcing fiber with regard to old rubber granule, and the composition quality component of wear-resisting rubber granule is: natural rubber: 80-100 parts of a binder; carbon black: 40-60 parts; nano montmorillonite powder: 5-9 parts of a solvent; zinc oxide: 4-8 parts; antioxidant: 3-7 parts; mildew-proof antibacterial agent: 3-6 parts; accelerator (b): 3-4 parts; sulfur: 2-3 parts of a solvent; stearic acid: 2-4; toner: 15-25 parts.
In this embodiment, the thicknesses of the outer wear-resistant layer and the inner normal layer are 4mm and 2mm, respectively.
In this embodiment, the graphite powder particles are crushed and dried, and then plasticated and mixed with the wear-resistant rubber particles of the outer wear-resistant layer.
In this embodiment, the reinforcing fiber may be one of nylon, aramid, carbon fiber, glass fiber, and steel cord.
In this example, the used rubber particles were obtained by pulverizing the recovered used rubber material, kneading the pulverized material, and then kneading and molding the kneaded material with the reinforcing fibers.
In this embodiment, the inner common layer and the outer wear-resistant layer are fixedly bonded by rubber cement.
In this embodiment, the mixing ratio by mass of the wear-resistant rubber particles, the reinforcing fibers, and the graphite powder particles is 5: 2:3.
In this embodiment, the antifungal and antibacterial agent is at least one of methyl benzimidazole carbamate, 2-benzisothiazolin-3-one, and 1, 2-benzisothiazolin-3-one derivatives.
The preparation method of the wear-resistant rubber for the slurry pump comprises the following steps,
step 1: and (2) discharging and cooling the rubber particles and the graphite powder particles to 80 ℃ after the rubber particles and the graphite powder particles are kept in a smelting furnace at 160-190 ℃ for 1-3 hours: discharging the old rubber particles to a cold area to 80 ℃ at the temperature of 150-170 ℃ for 0.5-2 hours;
step 2: placing standby fluid rubber, reinforcing fibers and graphite powder particles in a mold, and performing compression molding under the conditions that the pressure is 15-19 MPa and the temperature is 160 ℃ to form an outer wear-resistant layer;
and step 3: placing the rubber and the reinforced fibers after the rubber particles are smelted in a mold, and performing compression molding under the conditions of the pressure of 7-14 MPa and the temperature of 160 ℃ to form an inner common layer;
and 4, step 4: and (3) smearing special rubber glue outside the inner common layer, and then sleeving the cooled outer wear-resistant layer on the cooled inner common layer for press bonding by a press machine.
The first embodiment is as follows:
step 1: and (3) keeping the rubber particles and the graphite powder particles in a smelting furnace at 160 ℃ for 1 hour, and then discharging and cooling to 80 ℃: discharging the old rubber particles to 80 ℃ at 150 ℃ for 0.5 hour;
step 2: placing the standby fluid rubber, the reinforcing fiber and the graphite powder particles in a mold, and performing compression molding under the conditions of 16MPa of pressure and 160 ℃ to form an outer wear-resistant layer;
and step 3: placing the rubber and the reinforced fiber after the rubber particles are smelted in a mould, and performing compression molding under the conditions of the pressure of 8MPa and the temperature of 160 ℃ to form an inner common layer;
and 4, step 4: and (3) smearing special rubber glue outside the inner common layer, and then sleeving the cooled outer wear-resistant layer on the cooled inner common layer for press bonding by a press machine.
Example two:
step 1: the rubber particles and graphite powder particles were kept at 170 ℃ in a melting furnace for 1.5 hours, and then discharged and cooled to 80 ℃: discharging the old rubber particles to a cold area of 80 ℃ at 155 ℃ for 1 hour;
step 2: placing the standby fluid rubber, the reinforcing fiber and the graphite powder particles in a mold, and performing compression molding under the conditions of pressure of 17MPa and temperature of 160 ℃ to form an outer wear-resistant layer;
and step 3: placing the rubber and the reinforced fiber after the rubber particles are smelted in a mould, and performing compression molding under the conditions of the pressure of 10MPa and the temperature of 160 ℃ to form an inner common layer;
and 4, step 4: and (3) smearing special rubber glue outside the inner common layer, and then sleeving the cooled outer wear-resistant layer on the cooled inner common layer for press bonding by a press machine.
Example three:
step 1: and (3) keeping the rubber particles and the graphite powder particles in a smelting furnace at 180 ℃ for 2 hours, and then discharging and cooling to 80 ℃: discharging the old rubber particles to 80 ℃ at 160 ℃ for 1.5 hours;
step 2: placing the standby fluid rubber, the reinforcing fiber and the graphite powder particles in a mold, and performing compression molding under the conditions of pressure of 18MPa and temperature of 160 ℃ to form an outer wear-resistant layer;
and step 3: placing the rubber and the reinforced fiber after the rubber particles are smelted in a mould, and performing compression molding under the conditions of the pressure of 12MPa and the temperature of 160 ℃ to form an inner common layer;
and 4, step 4: and (3) smearing special rubber glue outside the inner common layer, and then sleeving the cooled outer wear-resistant layer on the cooled inner common layer for press bonding by a press machine.
Example four:
step 1: and (3) keeping the rubber particles and the graphite powder particles in a smelting furnace at 190 ℃ for 3 hours, and then discharging and cooling to 80 ℃: discharging the old rubber particles to a cold area of 80 ℃ at 170 ℃ for 2 hours;
step 2: placing the standby fluid rubber, the reinforcing fiber and the graphite powder particles in a mold, and performing compression molding under the conditions of 19MPa of pressure and 160 ℃ to form an outer wear-resistant layer;
and step 3: placing the rubber and the reinforced fiber after the rubber particles are smelted in a mould, and performing compression molding under the conditions of pressure of 14MPa and temperature of 160 ℃ to form an inner common layer;
and 4, step 4: and (3) smearing special rubber glue outside the inner common layer, and then sleeving the cooled outer wear-resistant layer on the cooled inner common layer for press bonding by a press machine.
Production process of wear-resistant layer rubber
In conclusion, the abrasion-resistant layer rubber has higher abrasion-resistant strength under the conditions that the temperature is 190 ℃, the time is 2 hours and the pressure is 19 MPa.
When the wear-resistant rubber for the slurry pump and the production process thereof are used, it needs to be explained that the wear-resistant rubber for the slurry pump and the production process thereof are provided, parts are all universal standard parts or parts known by technicians in the field, and the structure and the principle of the wear-resistant rubber are known by the technicians in the field through technical manuals or conventional experimental methods.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The wear-resistant rubber for the slurry pump is characterized in that: the wear-resistant rubber comprises an inner common layer and an outer wear-resistant layer, the outer wear-resistant layer is formed by mixing and compression molding of wear-resistant rubber particles, reinforcing fibers and graphite powder particles, the inner common layer is formed by mixing and compression molding of old rubber particles and reinforcing fibers, and the wear-resistant rubber particles comprise the following components in parts by mass: natural rubber: 80-100 parts of a binder; carbon black: 40-60 parts; nano montmorillonite powder: 5-9 parts of a solvent; zinc oxide: 4-8 parts; antioxidant: 3-7 parts; mildew-proof antibacterial agent: 3-6 parts; accelerator (b): 3-4 parts; sulfur: 2-3 parts of a solvent; stearic acid: 2-4; toner: 15-25 parts.
2. The wear-resistant rubber for the slurry pump according to claim 1, wherein: the thicknesses of the outer wear-resistant layer and the inner common layer are respectively 4mm and 2 mm.
3. The wear-resistant rubber for the slurry pump according to claim 1, wherein: and the graphite powder particles are crushed and dried and then plasticated and mixed with the wear-resistant rubber particles of the outer wear-resistant layer.
4. The wear-resistant rubber for the slurry pump according to claim 1, wherein: the reinforcing fiber may be one of nylon, aramid, carbon fiber, glass fiber and steel cord.
5. The wear-resistant rubber for the slurry pump according to claim 1, wherein: the waste rubber particles are prepared by crushing and mixing recycled rubber materials, and then mixing and molding the crushed materials and the reinforced fibers.
6. The wear-resistant rubber for the slurry pump according to claim 1, wherein: the inner common layer and the outer wear-resistant layer are fixedly bonded through rubber glue.
7. The wear-resistant rubber for the slurry pump according to claim 1, wherein: the mixing mass ratio of the wear-resistant rubber particles, the reinforcing fibers and the graphite powder particles is 5: 2:3.
8. The wear-resistant rubber for the slurry pump according to claim 1, wherein: the mildew-proof antibacterial agent is at least one of benzimidazole methyl carbamate, 2-benzisothiazolin-3-one and 1, 2-benzisothiazolin-3-one derivatives.
9. The preparation method of the wear-resistant rubber for the slurry pump according to any one of claims 1 to 8, which comprises the following steps:
step 1: and (3) discharging and cooling the rubber particles and the graphite powder particles to 80 ℃ after the rubber particles and the graphite powder particles are kept at 160-190 ℃ in a smelting furnace for 1-3 hours: discharging the old rubber particles to a cold area to 80 ℃ at the temperature of 150-170 ℃ for 0.5-2 hours;
step 2: placing standby fluid rubber, reinforcing fibers and graphite powder particles in a mold, and performing compression molding under the conditions that the pressure is 15-19 MPa and the temperature is 160 ℃ to form an outer wear-resistant layer;
and step 3: placing the rubber and the reinforced fibers after the rubber particles are smelted in a mold, and performing compression molding under the conditions of the pressure of 7-14 MPa and the temperature of 160 ℃ to form an inner common layer;
and 4, step 4: and (3) smearing special rubber glue outside the inner common layer, and then sleeving the cooled outer wear-resistant layer on the cooled inner common layer for press bonding by a press machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010234418.4A CN111959092A (en) | 2020-03-30 | 2020-03-30 | Wear-resistant rubber for slurry pump and production process thereof |
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| CN202010234418.4A CN111959092A (en) | 2020-03-30 | 2020-03-30 | Wear-resistant rubber for slurry pump and production process thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104004236A (en) * | 2014-05-26 | 2014-08-27 | 芜湖风雪橡胶有限公司 | Rubber material composition for soles and method for preparing rubber material for soles |
| CN109130399A (en) * | 2018-06-05 | 2019-01-04 | 广东川奥高新科技有限公司 | A kind of high wear-resistant rubber ground cushion and preparation method thereof |
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2020
- 2020-03-30 CN CN202010234418.4A patent/CN111959092A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104004236A (en) * | 2014-05-26 | 2014-08-27 | 芜湖风雪橡胶有限公司 | Rubber material composition for soles and method for preparing rubber material for soles |
| CN109130399A (en) * | 2018-06-05 | 2019-01-04 | 广东川奥高新科技有限公司 | A kind of high wear-resistant rubber ground cushion and preparation method thereof |
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Application publication date: 20201120 |