CN108503926A - A kind of polyethylene insulated aerial cable material - Google Patents
A kind of polyethylene insulated aerial cable material Download PDFInfo
- Publication number
- CN108503926A CN108503926A CN201810329308.9A CN201810329308A CN108503926A CN 108503926 A CN108503926 A CN 108503926A CN 201810329308 A CN201810329308 A CN 201810329308A CN 108503926 A CN108503926 A CN 108503926A
- Authority
- CN
- China
- Prior art keywords
- plasticizer
- polyethylene
- aerial cable
- cable material
- insulated aerial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of polyethylene insulated aerial cable material, are made of the raw material of following parts by weight：Polyethylene, 70~80；Natural rubber, 15~20；Carbon black N550,35~45；Plasticizer Mediaplast NB 7,5~8；Plasticizer DEDB, 10~15；Antioxidant A, 3~5；Vulcanizing agent BP, 1~2；Vulcanizing agent DCP, 1~2；Diatomite, 20~40；White smoke active agent PEG 4000,0.6；Vulcanization accelerator TMTD, 1~2；Gas-phase silica, 12~16；Modified talc powder, 10~15.The polyethylene insulated aerial cable material of the present invention has good cold-resistant, heat-resisting, antifatigue, buckle resistance energy.
Description
Technical field
The present invention relates to a kind of CABLE MATERIALS, specifically a kind of polyethylene insulated aerial cable material.
Background technology
China's high ferro enters the high-speed developing period, and the control of motor-car unit, high speed unit becomes increasingly complex, and electric-controlled is set up
Standby more and more, cabling requirements amount necessarily increases, while being also increasingly stringenter therewith to the performance requirement of cable material.
Currently on the market PE cable material there is bad mechanical property, weatherability is poor, resistance to ag(e)ing is poor the shortcomings of, be chronically exposed to
Outdoor is susceptible to season cracking phenomenon, cannot be satisfied the market demand.
Invention content
The object of the present invention is to provide a kind of polyethylene insulated aerial cable material.
In order to solve the above technical problems, a kind of polyethylene insulated aerial cable material, is made of the raw material of following parts by weight：It is poly-
Ethylene, 70~80；Natural rubber, 15~20；Carbon black N550,35~45；Plasticizer Mediaplast NB-7,5~8；Plasticizer
DEDB, 10~15；Antioxidant A, 3~5；Vulcanizing agent BP, 1~2；Vulcanizing agent DCP, 1~2；Diatomite, 20~40；White cigarette activity
Agent PEG 4000,0.6；Vulcanization accelerator TMTD, 1~2；Gas-phase silica, 12~16；Modified talc powder, 10~15.
The preparation method of the modified talc powder is：
（1）First talcum powder is crushed, until abrasive grain degree is less than 300 mesh, superfine talcum powder grinding distribution powder is obtained, then will slide
Mountain flour is sufficiently mixed with nano-concrete and kaolin, obtains within 15 minutes baking mixes in 600 DEG C of vacuum kiln roastings, then will
The technical hydrochloric acid by weight 1 of baking mixes and concentration 30%：3 dispensings, in 70 DEG C of acidleach 6 hours；
（2）Again by step（1）The mixed liquor of acidleach and particulate matter therein are neutralized, are filtered, washed, dry, and obtain preliminary
Modified talcum powder；
（3）By step（2）Obtained talcum powder is placed in vacuum plasma spray coating equipment, using plasma spraying technology to talcum
Powder sprays sodium tripolyphosphate and dispersant NNO, and modified talc powder is obtained after spraying.
Above-mentioned polyethylene insulated aerial cable material, preparation method are：
（1）Each material is taken by weight, by polyethylene, natural rubber, carbon black N550, plasticizer Mediaplast NB-7, vulcanization
In agent BP input mixer, be added immediately modified vulcanizing agent DCP, diatomite, white smoke active agent PEG 4000, Vulcanization accelerator TMTD,
Gas-phase silica is plasticated 3 minutes, and plasticizer DEDB, modified talc powder is then added, and is continued to be kneaded 3 minutes, is added anti-aging agent
A, it is kneaded 3~5 minutes, when mixer temperature reaches 145~150 DEG C, starts to discharge, cooling is spare；
（2）By step（1）Gained mixture after cooling is sent into mixer, 5~8min is kneaded at 110~130 DEG C, then
Mill in open mill is sent into after final mixture is cooled down, thin logical 6~7 times to get polyethylene insulated aerial cable material.
It is that natural rubber is added as auxiliary material in base material, and adds carbon black N550, a variety of acts on not that the present invention, which is using polyethylene,
With the various auxiliary agents such as the plasticizer in stage, vulcanizing agent, make CABLE MATERIALS obtained that there is excellent mechanical performance, and with excellent
Weatherability, heatproof oxidation performance adapt to outdoor various harsh natural conditions.By the order of addition for rationally controlling each component raw material
And process time, further improve antifatigue, the buckle resistance energy of cable sleeve.
Specific implementation mode
Example 1
A kind of polyethylene insulated aerial cable material, is made of the raw material of following parts by weight：Polyethylene, 78；Natural rubber, 18；Charcoal
Black N550,42；Plasticizer Mediaplast NB-7,6；Plasticizer DEDB, 12；Antioxidant A, 4；Vulcanizing agent BP, 2；Vulcanizing agent
DCP, 1；Diatomite, 35；White smoke active agent PEG 4000,0.6；Vulcanization accelerator TMTD, 2；Gas-phase silica, 15；Modified talc powder,
13。
The preparation method of the modified talc powder is：
（1）First talcum powder is crushed, until abrasive grain degree is less than 300 mesh, superfine talcum powder grinding distribution powder is obtained, then will slide
Mountain flour is sufficiently mixed with nano-concrete and kaolin, obtains within 15 minutes baking mixes in 600 DEG C of vacuum kiln roastings, then will
The technical hydrochloric acid by weight 1 of baking mixes and concentration 30%：3 dispensings, in 70 DEG C of acidleach 6 hours；（2）Again by step（1）
The mixed liquor of acidleach and particulate matter therein are neutralized, are filtered, washed, dry, the talcum powder being tentatively modified；
（3）By step（2）Obtained talcum powder is placed in vacuum plasma spray coating equipment, using plasma spraying technology to talcum
Powder sprays sodium tripolyphosphate and dispersant NNO, and modified talc powder is obtained after spraying.
Above-mentioned polyethylene insulated aerial cable material, preparation method are：
（1）Each material is taken by weight, by polyethylene, natural rubber, carbon black N550, plasticizer Mediaplast NB-7, vulcanization
In agent BP input mixer, be added immediately modified vulcanizing agent DCP, diatomite, white smoke active agent PEG 4000, Vulcanization accelerator TMTD,
Gas-phase silica is plasticated 3 minutes, and plasticizer DEDB, modified talc powder is then added, and is continued to be kneaded 3 minutes, is added anti-aging agent
A, it is kneaded 4 minutes, when mixer temperature reaches 148 DEG C, starts to discharge, cooling is spare；
（2）By step（1）Gained mixture after cooling is sent into mixer, and 7min is kneaded at 120 DEG C, then will be final
Mill in open mill is sent into after mixture cooling, thin logical 7 times to get polyethylene insulated aerial cable material.
The CABLE MATERIALS test result of the present embodiment is shown in Table 1, table 2.
Table 1
Table 2
| Detection project | It is required that | Actual measurement（Exemplar 1） | Actual measurement（Exemplar 2） |
| Adhesive strength KN/m | ≥3 | 5.05 | 5.06 |
| Low temperature（-40℃×24h） | Flawless | Flawless | Flawless |
| Pulse testing（Internal temperature：180 DEG C, external temperature：100 DEG C, test pressure： 2.5bar, frequency：0.5 ~ 1Hz media：Air） | It recycles 200,000 times, Flawless | It recycles 260,000 times, Flawless | It recycles 260,000 times, Flawless |
Example 2
A kind of polyethylene insulated aerial cable material, is made of the raw material of following parts by weight：Polyethylene, 70；Natural rubber, 15；Charcoal
Black N550,35；Plasticizer Mediaplast NB-7,5；Plasticizer DEDB, 10；Antioxidant A, 3；Vulcanizing agent BP, 1；Vulcanizing agent
DCP, 1；Diatomite, 20；White smoke active agent PEG 4000,0.6；Vulcanization accelerator TMTD, 1；Gas-phase silica, 12；Modified talc powder,
10。
The preparation method of the modified talc powder is：
（1）First talcum powder is crushed, until abrasive grain degree is less than 300 mesh, superfine talcum powder grinding distribution powder is obtained, then will slide
Mountain flour is sufficiently mixed with nano-concrete and kaolin, obtains within 15 minutes baking mixes in 600 DEG C of vacuum kiln roastings, then will
The technical hydrochloric acid by weight 1 of baking mixes and concentration 30%：3 dispensings, in 70 DEG C of acidleach 6 hours；（2）Again by step（1）
The mixed liquor of acidleach and particulate matter therein are neutralized, are filtered, washed, dry, the talcum powder being tentatively modified；
（3）By step（2）Obtained talcum powder is placed in vacuum plasma spray coating equipment, using plasma spraying technology to talcum
Powder sprays sodium tripolyphosphate and dispersant NNO, and modified talc powder is obtained after spraying.
Above-mentioned polyethylene insulated aerial cable material, preparation method are：
（1）Each material is taken by weight, by polyethylene, natural rubber, carbon black N550, plasticizer Mediaplast NB-7, vulcanization
In agent BP input mixer, be added immediately modified vulcanizing agent DCP, diatomite, white smoke active agent PEG 4000, Vulcanization accelerator TMTD,
Gas-phase silica is plasticated 3 minutes, and plasticizer DEDB, modified talc powder is then added, and is continued to be kneaded 3 minutes, is added anti-aging agent
A, it is kneaded 4 minutes, when mixer temperature reaches 148 DEG C, starts to discharge, cooling is spare；
（2）By step（1）Gained mixture after cooling is sent into mixer, and 7min is kneaded at 120 DEG C, then will be final
Mill in open mill is sent into after mixture cooling, thin logical 7 times to get polyethylene insulated aerial cable material.
The CABLE MATERIALS test result of the present embodiment is shown in Table 1, table 2.
Table 1
Table 2
| Detection project | It is required that | Actual measurement（Exemplar 1） | Actual measurement（Exemplar 2） |
| Adhesive strength KN/m | ≥3 | 5.03 | 5.04 |
| Low temperature（-40℃×24h） | Flawless | Flawless | Flawless |
| Pulse testing（Internal temperature：180 DEG C, external temperature：100 DEG C, test pressure： 2.5bar, frequency：0.5 ~ 1Hz media：Air） | Recycle 200,000 It is secondary, flawless | Recycle 25.7 ten thousand It is secondary, flawless | Recycle 25.8 ten thousand It is secondary, flawless |
Example 3
A kind of polyethylene insulated aerial cable material, is made of the raw material of following parts by weight：Polyethylene, 80；Natural rubber, 20；Charcoal
Black N550,45；Plasticizer Mediaplast NB-7,8；Plasticizer DEDB, 15；Antioxidant A, 5；Vulcanizing agent BP, 2；Vulcanizing agent
DCP, 2；Diatomite, 40；White smoke active agent PEG 4000,0.6；Vulcanization accelerator TMTD, 2；Gas-phase silica, 16；Modified talc powder,
15。
The preparation method of the modified talc powder is：
（1）First talcum powder is crushed, until abrasive grain degree is less than 300 mesh, superfine talcum powder grinding distribution powder is obtained, then will slide
Mountain flour is sufficiently mixed with nano-concrete and kaolin, obtains within 15 minutes baking mixes in 600 DEG C of vacuum kiln roastings, then will
The technical hydrochloric acid by weight 1 of baking mixes and concentration 30%：3 dispensings, in 70 DEG C of acidleach 6 hours；（2）Again by step（1）
The mixed liquor of acidleach and particulate matter therein are neutralized, are filtered, washed, dry, the talcum powder being tentatively modified；
（3）By step（2）Obtained talcum powder is placed in vacuum plasma spray coating equipment, using plasma spraying technology to talcum
Powder sprays sodium tripolyphosphate and dispersant NNO, and modified talc powder is obtained after spraying.
Above-mentioned polyethylene insulated aerial cable material, preparation method are：
（1）Each material is taken by weight, by polyethylene, natural rubber, carbon black N550, plasticizer Mediaplast NB-7, vulcanization
In agent BP input mixer, be added immediately modified vulcanizing agent DCP, diatomite, white smoke active agent PEG 4000, Vulcanization accelerator TMTD,
Gas-phase silica is plasticated 3 minutes, and plasticizer DEDB, modified talc powder is then added, and is continued to be kneaded 3 minutes, is added anti-aging agent
A, it is kneaded 4 minutes, when mixer temperature reaches 148 DEG C, starts to discharge, cooling is spare；
（2）By step（1）Gained mixture after cooling is sent into mixer, and 7min is kneaded at 120 DEG C, then will be final
Mill in open mill is sent into after mixture cooling, thin logical 7 times to get polyethylene insulated aerial cable material.
The CABLE MATERIALS test result of the present embodiment is shown in Table 1, table 2.
Table 1
Table 2
| Detection project | It is required that | Actual measurement（Exemplar 1） | Actual measurement（Exemplar 2） |
| Adhesive strength KN/m | ≥3 | 5.04 | 5.04 |
| Low temperature（-40℃×24h） | Flawless | Flawless | Flawless |
| Pulse testing（Internal temperature：180 DEG C, external temperature：100 DEG C, test pressure： 2.5bar, frequency：0.5 ~ 1Hz media：Air） | Recycle 200,000 It is secondary, flawless | Recycle 25.8 ten thousand It is secondary, flawless | Recycle 25.8 ten thousand It is secondary, flawless |
The foregoing is merely the schematical specific implementation modes of the present invention, are not limited to the scope of the present invention.Any ability
The technical staff in domain, made equivalent variations and modification, should all belong under the premise of not departing from design and the principle of the present invention
In the scope of protection of the invention.
Claims (4)
1. a kind of polyethylene insulated aerial cable material, which is characterized in that be made of the raw material of following parts by weight：Polyethylene, 70~
80；Natural rubber, 15~20；Carbon black N550,35~45；Plasticizer Mediaplast NB-7,5~8；Plasticizer DEDB, 10~
15；Antioxidant A, 3~5；Vulcanizing agent BP, 1~2；Vulcanizing agent DCP, 1~2；Diatomite, 20~40；White smoke active agent PEG
4000,0.6；Vulcanization accelerator TMTD, 1~2；Gas-phase silica, 12~16；Modified talc powder, 10~15.
2. a kind of polyethylene insulated aerial cable material as described in claim 1, which is characterized in that by the raw material of following parts by weight
It is made：Polyethylene, 78；Natural rubber, 18；Carbon black N550,42；Plasticizer Mediaplast NB-7,6；Plasticizer DEDB, 12；
Antioxidant A, 4；Vulcanizing agent BP, 2；Vulcanizing agent DCP, 1；Diatomite, 35；White smoke active agent PEG 4000,0.6；Vulcanization accelerator TMTD,
2；Gas-phase silica, 15；Modified talc powder, 13.
3. a kind of polyethylene insulated aerial cable material as claimed in claim 2, which is characterized in that the system of the modified talc powder
Preparation Method is：
（1）First talcum powder is crushed, until abrasive grain degree is less than 300 mesh, superfine talcum powder grinding distribution powder is obtained, then will slide
Mountain flour is sufficiently mixed with nano-concrete and kaolin, obtains within 15 minutes baking mixes in 600 DEG C of vacuum kiln roastings, then will
The technical hydrochloric acid by weight 1 of baking mixes and concentration 30%：3 dispensings, in 70 DEG C of acidleach 6 hours；（2）Again by step（1）
The mixed liquor of acidleach and particulate matter therein are neutralized, are filtered, washed, dry, the talcum powder being tentatively modified；
（3）By step（2）Obtained talcum powder is placed in vacuum plasma spray coating equipment, using plasma spraying technology to talcum
Powder sprays sodium tripolyphosphate and dispersant NNO, and modified talc powder is obtained after spraying.
4. a kind of polyethylene insulated aerial cable material as described in claim 1, it is characterised in that：
Preparation method is：
（1）Each material is taken by weight, by polyethylene, natural rubber, carbon black N550, plasticizer Mediaplast NB-7, vulcanization
In agent BP input mixer, be added immediately modified vulcanizing agent DCP, diatomite, white smoke active agent PEG 4000, Vulcanization accelerator TMTD,
Gas-phase silica is plasticated 3 minutes, and plasticizer DEDB, modified talc powder is then added, and is continued to be kneaded 3 minutes, is added anti-aging agent
A, it is kneaded 3~5 minutes, when mixer temperature reaches 145~150 DEG C, starts to discharge, cooling is spare；
（2）By step（1）Gained mixture after cooling is sent into mixer, 5~8min is kneaded at 110~130 DEG C, then
Mill in open mill is sent into after final mixture is cooled down, thin logical 6~7 times to get polyethylene insulated aerial cable material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810329308.9A CN108503926A (en) | 2018-04-13 | 2018-04-13 | A kind of polyethylene insulated aerial cable material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810329308.9A CN108503926A (en) | 2018-04-13 | 2018-04-13 | A kind of polyethylene insulated aerial cable material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108503926A true CN108503926A (en) | 2018-09-07 |
Family
ID=63381619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810329308.9A Pending CN108503926A (en) | 2018-04-13 | 2018-04-13 | A kind of polyethylene insulated aerial cable material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108503926A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030195279A1 (en) * | 2002-04-09 | 2003-10-16 | Crompton Corporation. | Heterocyclic tin flame retardants/smoke suppressants and halogen-containing polymer composition containing same |
| CN105206337A (en) * | 2015-09-29 | 2015-12-30 | 安徽蓝德集团股份有限公司 | Power cable with excellent heat stability |
| CN105623111A (en) * | 2016-03-04 | 2016-06-01 | 王金武 | Anti-fatigue and anti-bending composite rubber cable sleeve |
| CN105802233A (en) * | 2016-04-26 | 2016-07-27 | 韩静静 | Mouse-proof optical cable rubber sleeve |
-
2018
- 2018-04-13 CN CN201810329308.9A patent/CN108503926A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030195279A1 (en) * | 2002-04-09 | 2003-10-16 | Crompton Corporation. | Heterocyclic tin flame retardants/smoke suppressants and halogen-containing polymer composition containing same |
| CN105206337A (en) * | 2015-09-29 | 2015-12-30 | 安徽蓝德集团股份有限公司 | Power cable with excellent heat stability |
| CN105623111A (en) * | 2016-03-04 | 2016-06-01 | 王金武 | Anti-fatigue and anti-bending composite rubber cable sleeve |
| CN105802233A (en) * | 2016-04-26 | 2016-07-27 | 韩静静 | Mouse-proof optical cable rubber sleeve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102746587B (en) | Insulation rubber for longitudinal water-tight demagnetization cable used for ship, and manufacture method for insulation rubber | |
| CN107880412B (en) | Preparation method of high-elasticity environment-friendly plastic track particles | |
| WO2015109792A1 (en) | Method for improving elasticity and heat build-up performance of rubber product | |
| CN111925569B (en) | Inner tire nozzle rubber for aircraft tire and preparation method thereof | |
| CN103804882A (en) | High-performance chlorohydrin rubber and preparation method thereof | |
| CN108219224B (en) | Composite rubber and preparation method thereof | |
| CN107057204B (en) | Composite auxiliary agent for producing rubber products | |
| CN104327387A (en) | Environmentally-protective mildew-proof rubber | |
| CN110272594B (en) | High-wear-resistance high-temperature-resistance rubber and preparation method thereof | |
| CN108503926A (en) | A kind of polyethylene insulated aerial cable material | |
| CN105086172A (en) | Caprolactam disulfide pre-dispersed master batch granule and preparation method thereof | |
| CN109081964A (en) | A kind of rubber compound auxiliary particle and its preparation method and application | |
| CN101985503A (en) | Pressure-proof, wear-resistant and age-proof ethylene-propylene-diene synthetic rubber and preparation method | |
| CN103980559B (en) | A kind of rubber sponge bottom material and preparation method thereof | |
| CN109206686A (en) | A kind of nitrile rubber-metal composite sealing material and preparation method thereof | |
| CN103275404B (en) | A kind of ethylene-propylene rubber(EPR)/agricultural waste gurry matrix material and its preparation method and application | |
| CN102766295A (en) | Clean air tube and preparation method thereof | |
| CN102504376A (en) | Sub-high temperature vulcanized solid sound-transmitting rubber and preparation method thereof | |
| CN109913003A (en) | A kind of preserved egg jade mud and preparation method thereof | |
| CN115386173A (en) | High-performance red EPDM (ethylene-propylene-diene monomer) particles and preparation method thereof | |
| CN114773972A (en) | Antistatic plastic track surface layer spraying color paste and preparation method thereof | |
| CN104761769A (en) | Material and method used for producing all steel truck radical tire inner liner | |
| CN102814017B (en) | Production process for silicification of dry powder | |
| CN104877187A (en) | Abrasion-resistant rubber and preparation method thereof | |
| CN110643118A (en) | High-performance universal rubber sleeve insulating rubber material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180907 |
|
| RJ01 | Rejection of invention patent application after publication |