CN114352815A - Ceramic rubber tube and preparation method thereof - Google Patents
Ceramic rubber tube and preparation method thereof Download PDFInfo
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- CN114352815A CN114352815A CN202210038804.5A CN202210038804A CN114352815A CN 114352815 A CN114352815 A CN 114352815A CN 202210038804 A CN202210038804 A CN 202210038804A CN 114352815 A CN114352815 A CN 114352815A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 131
- 239000005060 rubber Substances 0.000 title claims abstract description 131
- 239000000919 ceramic Substances 0.000 title claims abstract description 89
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 238000004804 winding Methods 0.000 claims description 24
- 239000013067 intermediate product Substances 0.000 claims description 14
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 12
- 244000043261 Hevea brasiliensis Species 0.000 claims description 8
- 229920003052 natural elastomer Polymers 0.000 claims description 8
- 229920001194 natural rubber Polymers 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 150000001868 cobalt Chemical class 0.000 claims description 4
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 238000004073 vulcanization Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000001035 drying Methods 0.000 description 10
- 238000009954 braiding Methods 0.000 description 8
- 239000004744 fabric Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 244000025254 Cannabis sativa Species 0.000 description 5
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 5
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 5
- 239000004677 Nylon Substances 0.000 description 5
- 235000009120 camo Nutrition 0.000 description 5
- 235000005607 chanvre indien Nutrition 0.000 description 5
- 239000011487 hemp Substances 0.000 description 5
- 229920001778 nylon Polymers 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000004506 ultrasonic cleaning Methods 0.000 description 3
- 239000004636 vulcanized rubber Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 229920001651 Cyanoacrylate Polymers 0.000 description 2
- 239000004830 Super Glue Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 238000000462 isostatic pressing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920003225 polyurethane elastomer Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Images
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- Laminated Bodies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a ceramic rubber tube and a preparation method thereof. The ceramic rubber tube has long service life, and is beneficial to reducing the cost and saving resources; the ceramic rubber tube is simple to prepare and suitable for large-scale industrial production.
Description
Technical Field
The invention relates to the field of rubber materials, in particular to a ceramic rubber tube and a preparation method thereof.
Background
Along with the increase of the domestic engineering amount and the improvement of the engineering difficulty, the existing market puts forward higher requirements on the service life of the engineering rubber pipe, for example, when a pump truck is used for concrete construction, materials are carried with certain scouring wear, when a blockage is met, the pump pipe needs to bear certain pressure, and therefore the pipeline of the pump truck needs to be wear-resistant and pressure-resistant. The conventional rubber pipe is generally made of a common lining polyurethane rubber pipe, and the service life of the common lining polyurethane rubber pump pipe under the service working conditions is usually 2 ten thousand, so that the actual application condition is difficult to meet, and the application of the conventional rubber pipe is limited.
Disclosure of Invention
The invention provides a ceramic rubber tube and a preparation method thereof, which are used for solving the technical problem that the service life of the existing rubber tube is short.
In order to solve the technical problems, the invention adopts the following technical scheme:
the ceramic rubber tube sequentially comprises a ceramic sheet and a rubber layer which are fixed with each other from inside to outside along the radial direction, and a cord reinforced layer is arranged inside the rubber layer. In the prior art, the polyurethane wear-resistant layer is used as the wear-resistant lining for the tail pipe of the common pump truck, and the ceramic plate is adopted to construct the wear-resistant layer, so that the wear-resistant effect is better, and the service life can be prolonged by 2-3 times when the ceramic plate is used for replacing the common polyurethane wear-resistant layer; meanwhile, the cord reinforced layer is additionally arranged in the rubber layer, so that the overall strength of the rubber pipe can be improved.
As a further preferable mode of the above technical means, the rubber layer includes an inner layer rubber, a middle layer rubber and an outer layer rubber (7); the cord reinforced layer is arranged in the middle rubber layer; the inner layer rubber is prepared from raw materials at least comprising the following components: 6-8 parts of natural rubber, 1-2 parts of styrene butadiene rubber and 3-4 parts of bonding resin; the middle rubber layer is prepared from raw materials at least comprising the following components: 6-8 parts of natural rubber, 1-2 parts of styrene butadiene rubber and 0.2-0.4 part of cobalt salt; the outer layer rubber is prepared from raw materials at least comprising the following components: 1-2 parts of chloroprene rubber and 6-8 parts of styrene-butadiene rubber. According to the rubber layer, the rubber layer is set to be of a three-layer structure, the rubber layers with different performances are obtained by limiting the formula proportion of each layer of structure, the inner layer rubber can enhance the bonding strength of rubber and ceramic, the middle layer rubber can enhance the bonding strength of the rubber and the cord reinforced layer, and the outer layer rubber has better weather resistance and can reduce the damage of ultraviolet rays, rainwater and the like to the rubber pipe.
As a further optimization of the technical scheme, the thickness of the inner layer rubber is 1.5-2 mm, the thickness of the middle layer rubber is 1-1.5 mm, and the thickness of the outer layer rubber is 1.5-2 mm.
As a further optimization of the technical scheme, the ceramic plate is made of toughened alumina ceramic, and is circular, the diameter of the ceramic plate is 3-4 mm, and the thickness of the ceramic plate is 2-3.8 mm. The ceramic wafer is rigid, so that a certain gap can be formed by the circular ceramic wafer when the ceramic wafer is spliced, a certain moving space is provided for the ceramic rubber tube, the ceramic rubber tube can be deformed and bent, the wear resistance and the flexibility are ensured, and meanwhile, the middle connection of the rubber tube cannot be greatly increased on the premise of having stronger wear resistance of the ceramic wafer with the thickness, so that the ceramic rubber tube is convenient to use and produce.
Preferably, the cord reinforcing layer comprises a plurality of layers of cords, the cords are woven by steel wires, the interval between the steel wires is 0.5-2 mm, and the steel wires are copper-plated steel wires.
Based on the same technical concept, the application also provides a preparation method of the ceramic rubber tube, which comprises the following steps:
s1, closely arranging and fixing the ceramic plates on a steel core, and winding the inner rubber layer on the ceramic plates and the steel core to obtain an intermediate product A;
s2, winding cords outside the intermediate product A to form a cord reinforced layer, and then winding the middle rubber outside the cord reinforced layer to obtain an intermediate product B;
s3, winding the outer layer rubber outside the intermediate product B, and covering a fixture outside the outer layer rubber to obtain an intermediate product C;
s4, vulcanizing the intermediate product C at 100-180 ℃ for 2-6 h, and removing the steel core and the fixed object to obtain the ceramic rubber tube.
As a further preferable mode of the above aspect, in the intermediate product B in step S2, a cord reinforcing layer and an inner rubber layer are repeatedly wound in a plurality of layers.
Preferably, in the step S4, the vulcanizing process is performed by using a compressed air vulcanizing tank, and the pressure in the compressed air vulcanizing tank is maintained at 0.5-0.7 MPa.
Vulcanizing by using a vulcanizing tank is a common means in the industry, but the vulcanizing tank is different from other vulcanizing tanks in the aspect of designing a specific vulcanizing process for each product of each formula in the vulcanizing process.
As a further preferred aspect of the above technical solution, before the ceramic sheet is fixed to the steel core in step S1, the ceramic sheet is processed through the following steps: the ceramic wafer is placed in an ultrasonic cleaning box to be cleaned and dried, the ceramic wafer is typeset according to the requirements of horizontal arrangement in line and longitudinal staggered arrangement by using a typesetting mould, the arrangement width is 300-500 mm, then one side of the ceramic wafer is fixed by using an adhesive tape, the other side of the ceramic wafer is cleaned by wiping with alcohol, after drying, hot vulcanized rubber is sprayed, and after full drying, adhesive cement is smeared.
As a further preferable mode of the above technical solution, in step S1, before the steel core is fixed to the ceramic sheet, a layer of release agent needs to be coated on the surface of the steel core, and the coating thickness of the release agent is 3 to 6 μm.
As a further preferable mode of the above technical solution, the fixing object in step S3 includes a nylon water cloth and a hemp rope.
Compared with the prior art, the invention has the advantages that:
(1) the ceramic rubber pipe has long service life when being used as an engineering pipeline (particularly a tail pipe of a pump truck), and is beneficial to reducing the cost and saving resources;
(2) the ceramic rubber tube is simple to prepare and suitable for large-scale industrial production.
Drawings
Fig. 1 is a schematic structural view (sectional view) of a ceramic rubber tube according to example 1.
Illustration of the drawings:
1. a flange; 2. a ceramic plate; 3. inner layer rubber; 4. middle layer rubber; 5. a framework steel wire; 6. a cord reinforcement layer; 7. and an outer layer of rubber.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1:
the ceramic rubber tube of the embodiment is shown in fig. 1 (the specific structure of each layer is shown in fig. 1), the inner diameter is 121mm, the length is 3000mm, one end of the ceramic rubber tube is sleeved with a flange 1, the ceramic rubber tube is sequentially provided with a ceramic sheet 2 (a toughened alumina ceramic is selected, the ceramic sheet is in a circular shape with the diameter of 4mm and the thickness of 3.8 mm), an inner layer rubber 3 (the thickness of 2mm), a middle layer rubber 4 (the thickness of 1mm) and an outer layer rubber 7 (the thickness of 1.5mm) from inside to outside along the radial direction, wherein a cord reinforced layer 6 is arranged in the middle layer rubber 4, and a framework steel wire 5 is arranged in the outer layer rubber 7; the ratio of natural rubber to styrene butadiene rubber in the base rubber of the inner layer rubber 3 is 8:2, and the addition amount of the bonding resin is 4 parts; the ratio of the natural rubber to the styrene butadiene rubber in the base rubber of the middle layer rubber 4 is 8:2, and the addition amount of the cobalt salt is 0.4 part; the ratio of the chloroprene rubber to the styrene-butadiene rubber in the base rubber of the outer layer rubber 7 is 2: 8.
The preparation method of the ceramic rubber tube comprises the following steps:
(1) preparing a ceramic sheet 2: the ceramic granulated powder is pressed into a ceramic green body in a mould with a specific shrinkage ratio, then the green body is placed into a sponge mould, and the green body is further compacted by using an isostatic press. And (3) putting the isostatic pressing green body into a tunnel kiln for sintering, cooling, washing off corundum sand on the surface by using a vibrating screen, and drying to obtain the ceramic plate 2.
(2) And (3) processing the ceramic plate 2: and (3) putting the ceramic into an ultrasonic cleaning box, cleaning for 30min, and drying. Arranging the ceramics according to the requirements of horizontal line formation and longitudinal dislocation by using a typesetting mould, wherein the arrangement width is 500mm, then fixing one surface by using an adhesive tape, wiping and cleaning the other surface by using alcohol, drying, spraying hot vulcanized rubber, and smearing adhesive cement after fully drying.
(3) Preparing rubber: preparing each layer of rubber according to the formula of each layer of rubber;
(4) on the surface of the steel coreCoating a layer of release agent with the thickness of 5 mu m; sticking the ceramic plates 2 on the inner wall of the flange 1 by using high-temperature-resistant super glue in advance, then sleeving the flange 1 at one end of a steel core, tightly arranging the processed ceramic plates 2 on the steel core, and fixing the ceramic plates by using absorbent cotton threads; winding inner layer rubber 3 on a ceramic plate 2, compacting, then passing through a braiding machine, braiding cord steel wires at intervals of 1mm to form a cord reinforcing layer 6, then winding middle layer rubber 4, reversely braiding the cord steel wires, winding the middle layer rubber 4, repeating the steps of braiding and winding the middle layer rubber 4 for multiple times, and winding a framework steel wire 5 for 1 time; winding the outer layer rubber 7, then winding the nylon water cloth, and winding the nylon water cloth
The hemp ropes are fixed at intervals of 2mm and then vulcanized, and a compressed air vulcanizing tank is adopted for vulcanization, wherein the pressure is 0.7MPa, the temperature is 149 ℃, and the time is 4 hours; and after vulcanization, the hemp rope water cloth is disassembled, and the steel core is pulled out, so that the ceramic rubber pipe is obtained.
Tests show that when the ceramic rubber pipe is used as a tail pipe of a pump truck, the service life of the ceramic rubber pipe can exceed 3 ten thousand square meters.
Example 2:
one end of the ceramic rubber pipe is sleeved with a flange 1, the ceramic rubber pipe sequentially comprises a ceramic plate 2 (a toughened alumina ceramic is selected, the shape of the ceramic plate is a circle with the diameter of 3mm and the thickness of 2mm), an inner layer rubber 3 (the thickness of 1.5mm), a middle layer rubber 4 (the thickness of 1.5mm) and an outer layer rubber 7 (the thickness of 2mm) from inside to outside along the radial direction, wherein a cord reinforced layer 6 is arranged in the middle layer rubber 4, and a framework steel wire 5 is arranged in the outer layer rubber 7; the ratio of natural rubber to styrene butadiene rubber in the base rubber of the inner layer rubber 3 is 6:2, and the addition amount of the bonding resin is 3 parts; the ratio of the natural rubber to the styrene butadiene rubber in the base rubber of the middle layer rubber 4 is 7:1.4, and the addition amount of the cobalt salt is 0.2 part; the ratio of the chloroprene rubber to the styrene-butadiene rubber in the base rubber of the outer layer rubber 7 is 1: 6.
The preparation method of the ceramic rubber tube comprises the following steps:
(1) preparing a ceramic sheet 2: the ceramic granulated powder is pressed into a ceramic green body in a mould with a specific shrinkage ratio, then the green body is placed into a sponge mould, and the green body is further compacted by using an isostatic press. And (3) putting the isostatic pressing green body into a tunnel kiln for sintering, cooling, washing off corundum sand on the surface by using a vibrating screen, and drying to obtain the ceramic plate 2.
(2) And (3) processing the ceramic plate 2: and (3) putting the ceramic into an ultrasonic cleaning box, cleaning for 30min, and drying. Arranging the ceramics according to the requirements of horizontal line formation and longitudinal dislocation by using a typesetting mould, wherein the arrangement width is 300mm, then fixing one surface by using an adhesive tape, wiping and cleaning the other surface by using alcohol, drying, spraying hot vulcanized rubber, and smearing adhesive cement after fully drying.
(3) Preparing rubber: preparing each layer of rubber according to the formula of each layer of rubber;
(4) coating a layer of separant with the thickness of 5 mu m on the surface of the steel core; sticking the ceramic plates 2 on the inner wall of the flange 1 by using high-temperature-resistant super glue in advance, then sleeving the flange 1 at one end of a steel core, tightly arranging the processed ceramic plates 2 on the steel core, and fixing the ceramic plates by using absorbent cotton threads; winding inner layer rubber 3 on a ceramic plate 2, compacting, then passing through a braiding machine, braiding cord steel wires at intervals of 1mm to form a cord reinforcing layer 6, then winding middle layer rubber 4, reversely braiding the cord steel wires, winding the middle layer rubber 4, repeating the steps of braiding and winding the middle layer rubber 4 for multiple times, and winding a framework steel wire 5 for 1 time; winding outer rubber 7, then winding nylon water cloth, winding hemp ropes with the diameter of 5mm on the nylon water cloth at the interval of 2mm, fixing, vulcanizing, and vulcanizing by adopting a compressed air vulcanizing tank at the pressure of 0.5MPa and the temperature of 149 ℃ for 4 hours; and after vulcanization, the hemp rope water cloth is disassembled, and the steel core is pulled out, so that the ceramic rubber pipe is obtained.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.
Claims (8)
1. The ceramic rubber tube is characterized by sequentially comprising a ceramic sheet (2) and a rubber layer which are fixed with each other from inside to outside along the radial direction, wherein a cord reinforced layer (6) is arranged inside the rubber layer.
2. The ceramic rubber tube as claimed in claim 1, wherein the rubber layer comprises an inner layer rubber (3), a middle layer rubber (4) and an outer layer rubber (7); the cord reinforced layer (6) is arranged in the middle rubber (4); the inner layer rubber (3) is prepared from raw materials at least comprising the following components: 6-8 parts of natural rubber, 1-2 parts of styrene butadiene rubber and 3-4 parts of bonding resin; the middle rubber (4) is prepared from raw materials at least comprising the following components: 6-8 parts of natural rubber, 1-2 parts of styrene butadiene rubber and 0.2-0.4 part of cobalt salt; the outer layer rubber (7) is prepared from raw materials at least comprising the following components: 1-2 parts of chloroprene rubber and 6-8 parts of styrene-butadiene rubber.
3. The ceramic rubber tube as claimed in claim 2, wherein the thickness of the inner layer rubber (3) is 1.5-2 mm, the thickness of the middle layer rubber (4) is 1-1.5 mm, and the thickness of the outer layer rubber (7) is 1.5-2 mm.
4. The ceramic rubber tube as claimed in any one of claims 2 to 3, wherein the ceramic sheet (2) is made of toughened alumina ceramic, and the ceramic sheet (2) is circular, has a diameter of 3 to 4mm and a thickness of 2 to 3.8 mm.
5. A method for preparing the ceramic rubber tube as claimed in any one of claims 2 to 4, which comprises the following steps:
s1, closely arranging and fixing the ceramic plates (2) on a steel core, and winding the inner rubber layer (3) on the ceramic plates (2) and the steel core to obtain an intermediate product A;
s2, winding cords outside the intermediate product A to form a cord reinforced layer (6), and winding the middle rubber (4) outside the cord reinforced layer (6) to obtain an intermediate product B;
s3, winding the outer layer rubber (7) outside the intermediate product B, and covering a fixed object outside the outer layer rubber (7) to obtain an intermediate product C;
s4, vulcanizing the intermediate product C at 100-180 ℃ for 2-6 h, and removing the steel core and the fixed object to obtain the ceramic rubber tube.
6. The method of manufacturing a ceramic rubber tube as claimed in claim 5, wherein in step S2, a cord reinforcing layer (6) and an inner rubber layer (3) are repeatedly wound in a plurality of layers in the intermediate product B.
7. The method for preparing the ceramic rubber tube according to claim 5, wherein the vulcanization in the step S4 is performed by using a compressed air vulcanizing tank, and the pressure in the compressed air vulcanizing tank is kept at 0.5-0.7 MPa.
8. Use of the ceramic rubber tube according to any one of claims 1 to 4 or the ceramic rubber tube obtained by the production method according to any one of claims 5 to 7 for a tail pipe of a pump truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210038804.5A CN114352815B (en) | 2022-01-13 | 2022-01-13 | Ceramic rubber tube and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210038804.5A CN114352815B (en) | 2022-01-13 | 2022-01-13 | Ceramic rubber tube and preparation method thereof |
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| Publication Number | Publication Date |
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| CN114352815A true CN114352815A (en) | 2022-04-15 |
| CN114352815B CN114352815B (en) | 2023-12-22 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001108159A (en) * | 1999-10-06 | 2001-04-20 | Yamashita Rubber Co Ltd | Reinforced rubber hose and manufacturing method therefor |
| US20130291989A1 (en) * | 2012-05-03 | 2013-11-07 | The Gates Corporation | Flame Resistant Hose Reinforced with Fiberglass Cord Fabric |
| CN211118077U (en) * | 2019-10-12 | 2020-07-28 | 衡水泽阳橡塑制品有限公司 | Wear-resistant rubber tube with ceramic lining |
| CN211875438U (en) * | 2020-04-01 | 2020-11-06 | 湖南精城特种陶瓷有限公司 | Ceramic rubber pump pipe |
| CN113154145A (en) * | 2021-05-26 | 2021-07-23 | 康瑞森工程科技(青岛)有限公司 | Flexible bendable rubber ceramic hose and production method thereof |
| CN113187963A (en) * | 2021-05-10 | 2021-07-30 | 宁波舜龙胶管有限公司 | Steel wire woven high-pressure rubber pipe and preparation process thereof |
| CN214999933U (en) * | 2021-06-29 | 2021-12-03 | 湖南超硬新材料有限公司 | Wear-resistant rubber tube with ceramic lining |
-
2022
- 2022-01-13 CN CN202210038804.5A patent/CN114352815B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001108159A (en) * | 1999-10-06 | 2001-04-20 | Yamashita Rubber Co Ltd | Reinforced rubber hose and manufacturing method therefor |
| US20130291989A1 (en) * | 2012-05-03 | 2013-11-07 | The Gates Corporation | Flame Resistant Hose Reinforced with Fiberglass Cord Fabric |
| CN211118077U (en) * | 2019-10-12 | 2020-07-28 | 衡水泽阳橡塑制品有限公司 | Wear-resistant rubber tube with ceramic lining |
| CN211875438U (en) * | 2020-04-01 | 2020-11-06 | 湖南精城特种陶瓷有限公司 | Ceramic rubber pump pipe |
| CN113187963A (en) * | 2021-05-10 | 2021-07-30 | 宁波舜龙胶管有限公司 | Steel wire woven high-pressure rubber pipe and preparation process thereof |
| CN113154145A (en) * | 2021-05-26 | 2021-07-23 | 康瑞森工程科技(青岛)有限公司 | Flexible bendable rubber ceramic hose and production method thereof |
| CN214999933U (en) * | 2021-06-29 | 2021-12-03 | 湖南超硬新材料有限公司 | Wear-resistant rubber tube with ceramic lining |
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| CN114352815B (en) | 2023-12-22 |
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