CN110845773A - Preparation method of modified wear-resistant heat-resistant ECO rubber tube - Google Patents
Preparation method of modified wear-resistant heat-resistant ECO rubber tube Download PDFInfo
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- CN110845773A CN110845773A CN201911170531.4A CN201911170531A CN110845773A CN 110845773 A CN110845773 A CN 110845773A CN 201911170531 A CN201911170531 A CN 201911170531A CN 110845773 A CN110845773 A CN 110845773A
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
- C08L71/03—Polyepihalohydrins
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a preparation method of a modified wear-resistant heat-resistant ECO rubber tube, and particularly relates to the field of rubber tube preparation, wherein the rubber tube is prepared from the following raw materials in parts by weight: 100 parts of rubber base material, 40-55 parts of N550 carbon black, 10-15 parts of bisphenol epoxy resin, 0.5-1.5 parts of a transesterification catalyst, 9-16 parts of polypropylene, 4-8 parts of a DOS plasticizer, 1-2 parts of an RD anti-aging agent and 1-3 parts of a promoter, and the invention also comprises a preparation method of the modified wear-resistant heat-resistant ECO rubber tube, which comprises the following specific preparation steps: s1: thermoplastic mixing: according to the formula proportion, the prepared rubber base material, polypropylene, bisphenol epoxy resin and the resin exchange catalyst raw materials are fed into a mixing roll for sealing and mixing, the coagulation state structure of the raw materials is changed to prepare rubber compound, S2: and (5) scouring. According to the invention, the bisphenol epoxy resin, the resin exchange catalyst and the polypropylene are added, so that the wear resistance and the heat resistance of the traditional ECO rubber tube can be effectively improved, and the higher use requirements of users can be met.
Description
Technical Field
The invention relates to the technical field of rubber hose preparation, in particular to a preparation method of a modified wear-resistant heat-resistant ECO rubber hose.
Background
The chlorohydrin rubber refers to a polyether rubber containing oxygen in its side group. It is a high molecular elastomer formed by ring-opening polymerization of cyclic ether containing epoxy group. Also known as chloro rubber, has been used to practice. Such rubbers are classified into homopolymers and copolymers according to the polymerization method. The former is formed by singly polymerizing epoxy chloropropane, is commonly expressed by CHR and is named as CO in China; the ECO rubber tube is a rubber tube made of chlorohydrin rubber raw materials, has oil resistance and ozone resistance, has better heat resistance than nitrile rubber and small air permeability, is suitable for manufacturing a sealing washer and a diaphragm, but the heat resistance and the wear resistance of the ECO rubber tube used at present are not ideal enough, and cannot meet the use requirements of users.
Disclosure of Invention
In order to overcome the above defects of the prior art, embodiments of the present invention provide a method for preparing a modified wear-resistant and heat-resistant ECO hose.
In order to achieve the purpose, the invention provides the following technical scheme: a modified wear-resistant heat-resistant ECO rubber tube comprises the following raw materials in parts by weight: 100 parts of rubber base material, 40-55 parts of N550 carbon black, 10-15 parts of bisphenol epoxy resin, 0.5-1.5 parts of a transesterification catalyst, 9-16 parts of polypropylene, 4-8 parts of a DOS plasticizer, 1-2 parts of an RD anti-aging agent and 1-3 parts of a promoter.
In a preferred embodiment, the rubber substrate comprises chlorohydrin rubber and natural rubber, the ratio between chlorohydrin rubber and natural rubber being set to 1: 1-2.
In a preferred embodiment, the raw materials used therein comprise the following parts by weight: 100 parts of rubber base material, 40 parts of N550 carbon black, 10 parts of bisphenol epoxy resin, 0.5 part of a transesterification catalyst, 9 parts of polypropylene, 4 parts of DOS plasticizer, 1 part of RD anti-aging agent and 1 part of accelerator.
In a preferred embodiment, the raw materials used therein comprise the following parts by weight: 100 parts of rubber base material, 50 parts of N550 carbon black, 13 parts of bisphenol epoxy resin, 1 part of a transesterification catalyst, 12 parts of polypropylene, 6 parts of a DOS plasticizer, 1.5 parts of an RD anti-aging agent and 2 parts of a promoter.
In a preferred embodiment, the raw materials used therein comprise the following parts by weight: 100 parts of rubber base material, 55 parts of N550 carbon black, 15 parts of bisphenol epoxy resin, 1.5 parts of a transesterification catalyst, 16 parts of polypropylene, 8 parts of DOS plasticizer, 2 parts of RD anti-aging agent and 3 parts of accelerator.
The invention also comprises a preparation method of the modified wear-resistant heat-resistant ECO rubber tube, which comprises the following specific preparation steps:
s1: thermoplastic mixing: according to the formula proportion, the prepared rubber base material, polypropylene, bisphenol epoxy resin and the resin exchange catalyst raw materials are fed into a mixing roll for sealed mixing, and the coagulation state structure of the raw materials is changed to prepare rubber compound;
s2: scouring: after the mixing is finished, putting the mixed material into an open mill, putting N550 carbon black, a DOS plasticizer, an RD antioxidant and a promoter into the open mill for open milling treatment, and carrying out extrusion forming;
s3: and (3) vulcanization: conveying the extruded rubber tube obtained in the step S2 into a vulcanizing machine for vulcanizing twice, wherein the temperature of the first vulcanizing is controlled to be within 140 ℃ and 165 ℃, the vulcanizing time is 15-25min, the temperature of the second vulcanizing is controlled to be within 210 ℃ and 220 ℃, and the vulcanizing time is 3-5 min;
s4: trimming burrs: and (5) taking out the product vulcanized in the step (S3) and trimming burrs to obtain a finished product.
In a preferred embodiment, the mixing temperature in the step S1 is controlled to be 90-120 ℃, and the mixing time is 10-18 min.
In a preferred embodiment, the crosslinking agent DCP + TAIC is used as the main vulcanization system in step S3.
The invention has the technical effects and advantages that:
according to the invention, the bisphenol epoxy resin, the resin exchange catalyst and the polypropylene are added, so that the wear resistance and the heat resistance of the traditional ECO rubber tube can be effectively improved, and the higher use requirements of users can be met.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention provides a modified wear-resistant heat-resistant ECO rubber tube, which comprises the following raw materials in parts by weight: 100 parts of rubber base material, 40-55 parts of N550 carbon black, 10-15 parts of bisphenol epoxy resin, 0.5-1.5 parts of a transesterification catalyst, 9-16 parts of polypropylene, 4-8 parts of a DOS plasticizer, 1-2 parts of an RD anti-aging agent and 1-3 parts of an accelerator, wherein the rubber base material comprises chlorohydrin rubber and natural rubber, and the ratio of the chlorohydrin rubber to the natural rubber is set to be 1: 1-2;
and specifically in this embodiment: 100 parts of rubber base material, 40 parts of N550 carbon black, 10 parts of bisphenol epoxy resin, 0.5 part of a transesterification catalyst, 9 parts of polypropylene, 4 parts of a DOS plasticizer, 1 part of an RD anti-aging agent and 1 part of a promoter;
the invention also comprises a preparation method of the modified wear-resistant heat-resistant ECO rubber tube, which comprises the following specific preparation steps:
s1: thermoplastic mixing: according to the formula proportion, the prepared rubber base material, polypropylene, bisphenol epoxy resin and a grease exchange catalyst are fed into a mixing roll for sealing and mixing, the mixing temperature is controlled to be 90-120 ℃, the mixing time is 10-18min, the condensed state structure of the raw materials is changed to prepare mixed rubber, a large number of unsaturated double bonds are arranged on the chlorohydrin rubber and natural rubber bonds, the chlorohydrin rubber and the natural rubber contain terminal carboxyl groups, the bisphenol epoxy resin also contains a large number of ester bonds, epoxy groups in the bisphenol epoxy resin can react with hydroxyl groups in the chlorohydrin rubber and the natural rubber under the action of the grease exchange catalyst to form good interface combination, and the mixed rubber reacts with aromatic or aliphatic peracid under the controlled condition to generate epoxy bonds, so that crack expansion in a modified rubber tube matrix can be prevented, the material fracture is slowed down, and in addition, the deformation and the damage of rubber particles can absorb more energy, the modified matrix material is ensured to have heat resistance, the loss factor is that the quotient of the loss modulus and the storage modulus is in a modification system, the damage of rubber particles is correspondingly increased under the action of external force, polypropylene is added to carry out high-temperature molding on the rubber base material, the condensed state structure of the rubber base material is changed, and a hard chain segment monomer is polymerized on the initiation position of a main chain, but because non-rubber substances contained in the rubber base material have chemical groups for terminating the ionic polymerization process, a method for grafting a reaction prepolymer and a natural rubber main chain is adopted for the thermoplastic grafted epichlorohydrin rubber to show excellent physical and mechanical properties relative to a synthesized thermoplastic elastomer, the self hard phase or hard segment is enhanced, and the material has better temperature resistance, high temperature resistance and tensile strength;
s2: scouring: after mixing, putting the mixed material into an open mill, putting N550 carbon black, a DOS plasticizer, an RD anti-aging agent and an accelerator into the open mill for open-milling treatment, carrying out extrusion forming, selecting large-particle-size carbon black as a main body for reinforcement, selecting the DOS plasticizer and DCP + TAIC as a main vulcanization system, and then adding the RD preventive for open-milling, so that the heat resistance of the rubber compound can be effectively improved;
s3: and (3) vulcanization: sending the rubber tube extruded and formed in the step S2 into a vulcanizing machine, vulcanizing twice by taking a cross-linking agent DCP + TAIC as a main vulcanization system, controlling the temperature of the first vulcanization at 165 ℃ and the vulcanization time at 15-25min, controlling the temperature of the second vulcanization at 210 ℃ and 220 ℃ and the vulcanization time at 3-5min, and forming a spatial three-dimensional structure in the rubber by adopting two-stage vulcanization of low temperature and high temperature so as to further improve the heat resistance of the rubber tube after molding;
s4: trimming burrs: and (5) taking out the product vulcanized in the step (S3) and trimming burrs to obtain a finished product.
Example 2:
the invention provides a modified wear-resistant heat-resistant ECO rubber tube, which comprises the following raw materials in parts by weight: 100 parts of rubber base material, 40-55 parts of N550 carbon black, 10-15 parts of bisphenol epoxy resin, 0.5-1.5 parts of a transesterification catalyst, 9-16 parts of polypropylene, 4-8 parts of a DOS plasticizer, 1-2 parts of an RD anti-aging agent and 1-3 parts of an accelerator, wherein the rubber base material comprises chlorohydrin rubber and natural rubber, and the ratio of the chlorohydrin rubber to the natural rubber is set to be 1: 1-2;
and specifically in this embodiment: 100 parts of rubber base material, 50 parts of N550 carbon black, 13 parts of bisphenol epoxy resin, 1 part of a transesterification catalyst, 12 parts of polypropylene, 6 parts of a DOS plasticizer, 1.5 parts of an RD anti-aging agent and 2 parts of a promoter;
the invention also comprises a preparation method of the modified wear-resistant heat-resistant ECO rubber tube, which comprises the following specific preparation steps:
s1: thermoplastic mixing: according to the formula proportion, the prepared rubber base material, polypropylene, bisphenol epoxy resin and a grease exchange catalyst are fed into a mixing roll for sealing and mixing, the mixing temperature is controlled to be 90-120 ℃, the mixing time is 10-18min, the condensed state structure of the raw materials is changed to prepare mixed rubber, a large number of unsaturated double bonds are arranged on the chlorohydrin rubber and natural rubber bonds, the chlorohydrin rubber and the natural rubber contain terminal carboxyl groups, the bisphenol epoxy resin also contains a large number of ester bonds, epoxy groups in the bisphenol epoxy resin can react with hydroxyl groups in the chlorohydrin rubber and the natural rubber under the action of the grease exchange catalyst to form good interface combination, and the mixed rubber reacts with aromatic or aliphatic peracid under the controlled condition to generate epoxy bonds, so that crack expansion in a modified rubber tube matrix can be prevented, the material fracture is slowed down, and in addition, the deformation and the damage of rubber particles can absorb more energy, the modified matrix material is ensured to have heat resistance, the loss factor is that the quotient of the loss modulus and the storage modulus is in a modification system, the damage of rubber particles is correspondingly increased under the action of external force, polypropylene is added to carry out high-temperature molding on the rubber base material, the condensed state structure of the rubber base material is changed, and a hard chain segment monomer is polymerized on the initiation position of a main chain, but because non-rubber substances contained in the rubber base material have chemical groups for terminating the ionic polymerization process, a method for grafting a reaction prepolymer and a natural rubber main chain is adopted for the thermoplastic grafted epichlorohydrin rubber to show excellent physical and mechanical properties relative to a synthesized thermoplastic elastomer, the self hard phase or hard segment is enhanced, and the material has better temperature resistance, high temperature resistance and tensile strength;
s2: scouring: after mixing, putting the mixed material into an open mill, putting N550 carbon black, a DOS plasticizer, an RD anti-aging agent and an accelerator into the open mill for open-milling treatment, carrying out extrusion forming, selecting large-particle-size carbon black as a main body for reinforcement, selecting the DOS plasticizer and DCP + TAIC as a main vulcanization system, and then adding the RD preventive for open-milling, so that the heat resistance of the rubber compound can be effectively improved;
s3: and (3) vulcanization: sending the rubber tube extruded and formed in the step S2 into a vulcanizing machine, vulcanizing twice by taking a cross-linking agent DCP + TAIC as a main vulcanization system, controlling the temperature of the first vulcanization at 165 ℃ and the vulcanization time at 15-25min, controlling the temperature of the second vulcanization at 210 ℃ and 220 ℃ and the vulcanization time at 3-5min, and forming a spatial three-dimensional structure in the rubber by adopting two-stage vulcanization of low temperature and high temperature so as to further improve the heat resistance of the rubber tube after molding;
s4: trimming burrs: and (5) taking out the product vulcanized in the step (S3) and trimming burrs to obtain a finished product.
Example 3:
the invention provides a modified wear-resistant heat-resistant ECO rubber tube, which comprises the following raw materials in parts by weight: 100 parts of rubber base material, 40-55 parts of N550 carbon black, 10-15 parts of bisphenol epoxy resin, 0.5-1.5 parts of a transesterification catalyst, 9-16 parts of polypropylene, 4-8 parts of a DOS plasticizer, 1-2 parts of an RD anti-aging agent and 1-3 parts of an accelerator, wherein the rubber base material comprises chlorohydrin rubber and natural rubber, and the ratio of the chlorohydrin rubber to the natural rubber is set to be 1: 1-2;
and specifically in this embodiment: 100 parts of rubber base material, 55 parts of N550 carbon black, 15 parts of bisphenol epoxy resin, 1.5 parts of a transesterification catalyst, 16 parts of polypropylene, 8 parts of DOS plasticizer, 2 parts of RD anti-aging agent and 3 parts of accelerator;
the invention also comprises a preparation method of the modified wear-resistant heat-resistant ECO rubber tube, which comprises the following specific preparation steps:
s1: thermoplastic mixing: according to the formula proportion, the prepared rubber base material, polypropylene, bisphenol epoxy resin and a grease exchange catalyst are fed into a mixing roll for sealing and mixing, the mixing temperature is controlled to be 90-120 ℃, the mixing time is 10-18min, the condensed state structure of the raw materials is changed to prepare mixed rubber, a large number of unsaturated double bonds are arranged on the chlorohydrin rubber and natural rubber bonds, the chlorohydrin rubber and the natural rubber contain terminal carboxyl groups, the bisphenol epoxy resin also contains a large number of ester bonds, epoxy groups in the bisphenol epoxy resin can react with hydroxyl groups in the chlorohydrin rubber and the natural rubber under the action of the grease exchange catalyst to form good interface combination, and the mixed rubber reacts with aromatic or aliphatic peracid under the controlled condition to generate epoxy bonds, so that crack expansion in a modified rubber tube matrix can be prevented, the material fracture is slowed down, and in addition, the deformation and the damage of rubber particles can absorb more energy, the modified matrix material is ensured to have heat resistance, the loss factor is that the quotient of the loss modulus and the storage modulus is in a modification system, the damage of rubber particles is correspondingly increased under the action of external force, polypropylene is added to carry out high-temperature molding on the rubber base material, the condensed state structure of the rubber base material is changed, and a hard chain segment monomer is polymerized on the initiation position of a main chain, but because non-rubber substances contained in the rubber base material have chemical groups for terminating the ionic polymerization process, a method for grafting a reaction prepolymer and a natural rubber main chain is adopted for the thermoplastic grafted epichlorohydrin rubber to show excellent physical and mechanical properties relative to a synthesized thermoplastic elastomer, the self hard phase or hard segment is enhanced, and the material has better temperature resistance, high temperature resistance and tensile strength;
s2: scouring: after mixing, putting the mixed material into an open mill, putting N550 carbon black, a DOS plasticizer, an RD anti-aging agent and an accelerator into the open mill for open-milling treatment, carrying out extrusion forming, selecting large-particle-size carbon black as a main body for reinforcement, selecting the DOS plasticizer and DCP + TAIC as a main vulcanization system, and then adding the RD preventive for open-milling, so that the heat resistance of the rubber compound can be effectively improved;
s3: and (3) vulcanization: sending the rubber tube extruded and formed in the step S2 into a vulcanizing machine, vulcanizing twice by taking a cross-linking agent DCP + TAIC as a main vulcanization system, controlling the temperature of the first vulcanization at 165 ℃ and the vulcanization time at 15-25min, controlling the temperature of the second vulcanization at 210 ℃ and 220 ℃ and the vulcanization time at 3-5min, and forming a spatial three-dimensional structure in the rubber by adopting two-stage vulcanization of low temperature and high temperature so as to further improve the heat resistance of the rubber tube after molding;
s4: trimming burrs: and (5) taking out the product vulcanized in the step (S3) and trimming burrs to obtain a finished product.
Example 4:
60 hoses prepared in the above examples 1 to 3 were subjected to heat resistance and wear resistance tests, respectively, and 20 hoses were used as one group, and the following data were obtained by performing three-group detection:
from the table, it can be seen that the rubber tube prepared by the formula and the steps has the best wear resistance and heat resistance only when the preparation method in the embodiment 2 has a moderate proportion, so that the use performance requirements of users are met.
And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. A modified wear-resistant heat-resistant ECO rubber tube is characterized in that: the raw materials used in the method comprise the following components in parts by weight: 100 parts of rubber base material, 40-55 parts of N550 carbon black, 10-15 parts of bisphenol epoxy resin, 0.5-1.5 parts of a transesterification catalyst, 9-16 parts of polypropylene, 4-8 parts of a DOS plasticizer, 1-2 parts of an RD anti-aging agent and 1-3 parts of a promoter.
2. The modified wear-resistant heat-resistant ECO hose according to claim 1, wherein: the rubber substrate comprises chlorohydrin rubber and natural rubber, and the ratio of the chlorohydrin rubber to the natural rubber is set to be 1: 1-2.
3. The modified wear-resistant heat-resistant ECO hose according to claim 1, wherein: the raw materials used in the method comprise the following components in parts by weight: 100 parts of rubber base material, 40 parts of N550 carbon black, 10 parts of bisphenol epoxy resin, 0.5 part of a transesterification catalyst, 9 parts of polypropylene, 4 parts of DOS plasticizer, 1 part of RD anti-aging agent and 1 part of accelerator.
4. The modified wear-resistant heat-resistant ECO hose according to claim 1, wherein: the raw materials used in the method comprise the following components in parts by weight: 100 parts of rubber base material, 50 parts of N550 carbon black, 13 parts of bisphenol epoxy resin, 1 part of a transesterification catalyst, 12 parts of polypropylene, 6 parts of a DOS plasticizer, 1.5 parts of an RD anti-aging agent and 2 parts of a promoter.
5. The modified wear-resistant heat-resistant ECO hose according to claim 1, wherein: the raw materials used in the method comprise the following components in parts by weight: 100 parts of rubber base material, 55 parts of N550 carbon black, 15 parts of bisphenol epoxy resin, 1.5 parts of a transesterification catalyst, 16 parts of polypropylene, 8 parts of DOS plasticizer, 2 parts of RD anti-aging agent and 3 parts of accelerator.
6. The modified wear-resistant and heat-resistant ECO hose according to any one of claims 1 to 5, wherein: the preparation method of the modified wear-resistant heat-resistant ECO rubber tube comprises the following specific steps:
s1: thermoplastic mixing: according to the formula proportion, the prepared rubber base material, polypropylene, bisphenol epoxy resin and the resin exchange catalyst raw materials are fed into a mixing roll for sealed mixing, and the coagulation state structure of the raw materials is changed to prepare rubber compound;
s2: scouring: after the mixing is finished, putting the mixed material into an open mill, putting N550 carbon black, a DOS plasticizer, an RD antioxidant and a promoter into the open mill for open milling treatment, and carrying out extrusion forming;
s3: and (3) vulcanization: conveying the extruded rubber tube obtained in the step S2 into a vulcanizing machine for vulcanizing twice, wherein the temperature of the first vulcanizing is controlled to be within 140 ℃ and 165 ℃, the vulcanizing time is 15-25min, the temperature of the second vulcanizing is controlled to be within 210 ℃ and 220 ℃, and the vulcanizing time is 3-5 min;
s4: trimming burrs: and (5) taking out the product vulcanized in the step (S3) and trimming burrs to obtain a finished product.
7. The method for preparing the modified wear-resistant heat-resistant ECO hose according to claim 6, wherein the method comprises the following steps: in the step S1, the mixing temperature is controlled at 90-120 ℃, and the mixing time is 10-18 min.
8. The method for preparing the modified wear-resistant heat-resistant ECO hose according to claim 6, wherein the method comprises the following steps: in the step S3, the cross-linking agent DCP + TAIC is used as a main vulcanization system.
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| CN201911170531.4A CN110845773A (en) | 2019-11-26 | 2019-11-26 | Preparation method of modified wear-resistant heat-resistant ECO rubber tube |
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| CN201911170531.4A CN110845773A (en) | 2019-11-26 | 2019-11-26 | Preparation method of modified wear-resistant heat-resistant ECO rubber tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112724517A (en) * | 2020-12-28 | 2021-04-30 | 鑫龙立新材料扬州有限公司 | High-wear-resistance rubber pipe based on modified PP (polypropylene) resin and preparation method thereof |
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2019
- 2019-11-26 CN CN201911170531.4A patent/CN110845773A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112724517A (en) * | 2020-12-28 | 2021-04-30 | 鑫龙立新材料扬州有限公司 | High-wear-resistance rubber pipe based on modified PP (polypropylene) resin and preparation method thereof |
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Application publication date: 20200228 |