CN103325497A - Covering method of class 1E category K1 cables for nuclear power station - Google Patents
Covering method of class 1E category K1 cables for nuclear power station Download PDFInfo
- Publication number
- CN103325497A CN103325497A CN2013102549837A CN201310254983A CN103325497A CN 103325497 A CN103325497 A CN 103325497A CN 2013102549837 A CN2013102549837 A CN 2013102549837A CN 201310254983 A CN201310254983 A CN 201310254983A CN 103325497 A CN103325497 A CN 103325497A
- Authority
- CN
- China
- Prior art keywords
- extruder
- cable
- nuclear power
- power station
- dianhydride
- 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
Landscapes
- Processes Specially Adapted For Manufacturing Cables (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses a covering method of class 1E category K1 cables for a nuclear power station. The method comprises the steps of evenly mixing terminal amino group polysiloxane prepolymer, aromatic dianhydride, aromatic diamine and chain terminators in a high-speed mixer, starting a cable extruder, feeding the mixture into the cable extruder through a feeding device of the cable extruder in a metering mode, and covering the cables after the mixture enters a die head of the cable extruder through a conveying section, a fusing section and a metering section of a twin-screw extruder. According to the covering method of the class 1E category K1 cables for the nuclear power station, the polymerization of polyimide siloxane and the covering of the cables are achieved synchronously, the technology is simple, and cost is reduced.
Description
Technical field
The present invention relates to a kind of method for coating of cable, especially relating to a kind of is the method for coating of the nuclear power station 1E level K1 class cable core of insulation or sheath with the Polyimidesiloxane.
Background technology
1E level K1 nucleoid level cable requires to have anti-nuclear environment performance, and its environment for use harshness, security requirement strictness are the bigger nuclear level cable products of designing technique, manufacturing technology and experimental technique difficulty.Though the class cable of domestic existing two tame cable manufacturing enterprises development has at present passed through technical appraisement, filled up domestic blank, but the applicable cases of 1E level K1 class cable but allows of no optimist, and has at present domesticly built and still adopts imported product with the 1E level K1 class cable overwhelming majority building nuclear power engineering.Tracing it to its cause is that homemade 1E level K1 class cable may also need more test and checking aspect performance reliability at present, can't make the nuclear power owner relieved fully aspect constant product quality.The 1E level K1 class cable jacket material that domestic corporation produces is normally used to be macromolecular materials such as filling-modified crosslinked polyolefin resin, ethylene-propylene rubber, ethylene-vinyl acetate copolymer, in order to satisfy the demand of 1E level K1 class cable, contain a large amount of fire retardants, anti-irradiation agent in these protective cover materials, its content is generally greater than 50% parts by weight, and the adding that so adds component has in a large number caused the decline of material mechanical performance and the lifting of difficulty of processing.In the face of the requirement of more high-grade nuclear power safety standard, the lifting of 1E level K1 class cable jacket material performance becomes imperative.
It is monomer that Polyimidesiloxane is to use siliceous dianhydride or siliceous diamines, a kind of polymer of in the polyimides skeleton structure, having introduced the polysiloxanes chain link of flexibility, asymmetry and tool side group group and having obtained, it at high temperature can keep high strength and high rigidity, and has long-term heat resistance and radioresistance; Polyimidesiloxane also has high dimensional stability, good electrical property, the chemical resistance of wide region, excellent processability, own intrinsic anti-flammability and burning to give birth to characteristics such as the cigarette amount is few in addition, therefore, Polyimidesiloxane is a kind of desirable 1E level K1 class cable jacket material material.Current, Polyimidesiloxane normally adopts the method preparation of melt polycondensation, and this method need be implemented under the high temperature more than 300 degree usually, reaction time, generally about 20 hours, polycondensation need be used a large amount of solvents in earlier stage, therefore, this method is complex process not only, and energy consumption is higher.
The reaction extrude be with extruder as flow reactor, carry out a kind of method of monomer polymerization.Reactive extrusion technology is integrated the continuous synthetic reaction of raw material monomer and the melt-processed of polymer, by required material or the goods of screw extruder one step formation, therefore, have reinforced the preparation easily, the variation of reaction raw materials form, dispersiveness and Combination are good, degradation is little, and unreacted monomer and byproduct can be got rid of, and material is not detained, has the self-cleaning ability, no reprocessing and solvent recovery problem, environmental pollution is little, can realize continuous processing, the production efficiency height, characteristics such as good product quality.Chinese patent CN1563150A reported and a kind ofly extruded the continuous method for preparing Polyetherimide by reaction, yet, also do not have at present to relate to the goods that the reaction extrusion molding prepares Polyimidesiloxane.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, task of the present invention has been to provide a kind of method for coating of nuclear power station 1E level K1 class cable.
Technical scheme of the present invention is such, and a kind of method for coating of nuclear power station 1E level K1 class cable is characterized in that, may further comprise the steps:
A. in high-speed mixer, evenly mix end amido polysiloxanes performed polymer, aromatic series dianhydride and aromatic diamine and chain terminating agent;
B. open the cable extruder, with the feeding device metered charge of the mixed material among the step a by the cable extruder, behind transportation section, melt zone and the metering section via double screw extruder, enter the mould head of cable extruder, carry out the coating of cable.
Preferably, described end amido polysiloxanes performed polymer is the prepolymer after two aminopropyl tetramethyl disiloxanes and the cyclosiloxane polycondensation; Described aromatic series dianhydride is one or more the mixture in pyromellitic acid dianhydride, bisphenol-A dianhydride, biphenyl dianhydride, the benzophenone tetracarboxylic dianhydride; Described aromatic diamine is a kind of in p-phenylenediamine (PPD), m-phenylene diamine (MPD), oxydiphenyl amine, the methylene dianiline (MDA); Described chain terminating agent is phthalic anhydride.
Preferably, the ratio of the amount that described aromatic diamine and aromatic series dianhydride are total is 1:1, and the ratio of end amido polysiloxanes performed polymer and aromatic diamine amount is 1:0.1～5, and the consumption of phthalic anhydride is 0.8～1.2% of aromatic series dianhydride amount.
Preferably, described cable extruder is meshed double screw type cable extruder in the same way, screw diameter 35mm, and draw ratio is 60.
Preferably, the charging rate of the extruder among the described step b is 3～15Kg/h, and screw speed is 50～250r/min, and the temperature of extruder is set at, feeding section to metering section temperature is set to be increased to 350 ℃ successively by 100 ℃, and the temperature of mould head is 340 ℃.
Compare with the coating technology of existing electric wire, the present invention finishes the polymerization of Polyimidesiloxane and the coating of cable synchronously, and technology is simple, and cost reduces.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
A kind of method for coating of nuclear power station 1E level K1 class cable, this method may further comprise the steps:
(1) ratio of the amount of the total amido of control and dianhydride is 1:1, be prepolymer after two aminopropyl tetramethyl disiloxanes and the cyclosiloxane polycondensation with amino this performed polymer of dimethyl diphenyl siloxanes performed polymer 2600g(of end, method self-control according to Chinese patent CN 102876038A, its number-average molecular weight is 5200), bisphenol-A dianhydride 1560g, p-phenylenediamine (PPD) 270g and phthalic anhydride 3.552g add in the high-speed mixer, mix;
(2) open the cable extruder, set extruder and be increased to 350 ℃ by charge door to the temperature of metering section successively by 100 ℃, the mould head temperature is 340 ℃, after extruder temperature is constant, with the material through just mixing in the step (1), add the feed bin that adds of cable extruder, carry out metered charge, charging rate is 3Kg/h, and the extruder rotating speed is 50r/min, carries out the coating of nuclear power station 1E level K1 class cable.
Embodiment 2
A kind of method for coating of nuclear power station 1E level K1 class cable, this method may further comprise the steps:
(1) ratio of the amount of the total amido of control and dianhydride is 1:1, be prepolymer after two aminopropyl tetramethyl disiloxanes and the cyclosiloxane polycondensation with amino this performed polymer of dimethyl diphenyl siloxanes performed polymer 3500g(of end, method self-control according to Chinese patent CN 102876038A, its number-average molecular weight is 3500), bisphenol-A dianhydride 1820g, p-phenylenediamine (PPD) 270g and phthalic anhydride 3.7g add in the high-speed mixer, mix;
(2) open the cable extruder, set extruder and be increased to 350 ℃ by charge door to the temperature of metering section successively by 100 ℃, the mould head temperature is 340 ℃, after extruder temperature is constant, with the material through just mixing in the step (1), add the feed bin that adds of cable extruder, carry out metered charge, charging rate is 15Kg/h, and the extruder rotating speed is 250r/min, carries out the coating of nuclear power station 1E level K1 class cable.
Embodiment 3
A kind of method for coating of nuclear power station 1E level K1 class cable, this method may further comprise the steps:
(1) ratio of the amount of the total amido of control and dianhydride is 1:1, be prepolymer after two aminopropyl tetramethyl disiloxanes and the cyclosiloxane polycondensation with amino this performed polymer of dimethyl diphenyl siloxanes performed polymer 2350g(of end, its number-average molecular weight is 2350), bisphenol-A dianhydride 2080g, p-phenylenediamine (PPD) 324g and phthalic anhydride 5.9g add in the high-speed mixer, mix;
(2) open the cable extruder, set extruder and be increased to 350 ℃ by charge door to the temperature of metering section successively by 100 ℃, the mould head temperature is 340 ℃, after extruder temperature is constant, with the material through just mixing in the step (1), add the feed bin that adds of cable extruder, carry out metered charge, charging rate is 12Kg/h, and the extruder rotating speed is 200r/min, carries out the coating of nuclear power station 1E level K1 class cable.
Embodiment 4
A kind of method for coating of nuclear power station 1E level K1 class cable, this method may further comprise the steps:
(1) ratio of the amount of the total amido of control and dianhydride is 1:1, be prepolymer after two aminopropyl tetramethyl disiloxanes and the cyclosiloxane polycondensation with amino this performed polymer of dimethyl diphenyl siloxanes performed polymer 2350g(of end, its number-average molecular weight is 2350), bisphenol-A dianhydride 3120g, p-phenylenediamine (PPD) 540g and phthalic anhydride 10.65g add in the high-speed mixer, mix;
(2) open the cable extruder, set extruder and be increased to 350 ℃ by charge door to the temperature of metering section successively by 100 ℃, the mould head temperature is 340 ℃, after extruder temperature is constant, with the material through just mixing in the step (1), add the feed bin that adds of cable extruder, carry out metered charge, charging rate is 9Kg/h, and the extruder rotating speed is 150r/min, carries out the coating of nuclear power station 1E level K1 class cable.
Material performance test method and operative norm:
To peel off by the cable coating layer of the inventive method preparation, and by the method sample preparation of fusion compressing tablet, carry out the correlated performance test, concrete method of testing and sign are as follows:
Stretch and to think carefully in Shenzhen that with the three-point bending test omnipotent stretching-machine tests, the standard of test is ASTM-D638 and D790, and extension test speed is 50mm/min, and mechanical property result is the mean value of 5 battens; Radiation parameter is gamma-rays, 200Mrad/70 ℃; The heat distortion temperature testing standard detects for the GB/T1643.2 standard, and load is 1.8MPa, and span is 100mm.The specific insulation test is carried out according to ASTMD257; The oxygen index test is tested its oxygen index by the GB/T2406-93 method.Coefficient of linear expansion is pressed GB/T 1036-2008 test.Test result is as shown in the table:
Claims (5)
1. the method for coating of a nuclear power station 1E level K1 class cable is characterized in that, may further comprise the steps:
A. in high-speed mixer, evenly mix end amido polysiloxanes performed polymer, aromatic series dianhydride and aromatic diamine and chain terminating agent;
B. open the cable extruder, with the feeding device metered charge of the mixed material among the step a by the cable extruder, behind transportation section, melt zone and the metering section via double screw extruder, enter the mould head of cable extruder, carry out the coating of cable.
2. the method for coating of nuclear power station 1E level K1 class cable according to claim 1 is characterized in that: the prepolymer of described end amido polysiloxanes performed polymer after for two aminopropyl tetramethyl disiloxanes and cyclosiloxane polycondensation; Described aromatic series dianhydride is one or more the mixture in pyromellitic acid dianhydride, bisphenol-A dianhydride, biphenyl dianhydride, the benzophenone tetracarboxylic dianhydride; Described aromatic diamine is a kind of in p-phenylenediamine (PPD), m-phenylene diamine (MPD), oxydiphenyl amine, the methylene dianiline (MDA); Described chain terminating agent is phthalic anhydride.
3. the method for coating of nuclear power station 1E level K1 class cable according to claim 2, it is characterized in that: the ratio of the amount that described aromatic diamine and aromatic series dianhydride are total is 1:1, the ratio of end amido polysiloxanes performed polymer and aromatic diamine amount is 1:0.1～5, and the consumption of phthalic anhydride is 0.8～1.2% of aromatic series dianhydride amount.
4. the method for coating of nuclear power station 1E level K1 class cable according to claim 1 is characterized in that: described cable extruder is meshed double screw type cable extruder in the same way, screw diameter 35mm, and draw ratio is 60.
5. the method for coating of nuclear power station 1E level K1 class cable according to claim 1, it is characterized in that: the charging rate of the extruder among the described step b is 3～15Kg/h, screw speed is 50～250r/min, the temperature of extruder is set at, feeding section to metering section temperature is set to be increased to 350 ℃ successively by 100 ℃, and the temperature of mould head is 340 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102549837A CN103325497A (en) | 2013-06-25 | 2013-06-25 | Covering method of class 1E category K1 cables for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102549837A CN103325497A (en) | 2013-06-25 | 2013-06-25 | Covering method of class 1E category K1 cables for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103325497A true CN103325497A (en) | 2013-09-25 |
Family
ID=49194186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102549837A Pending CN103325497A (en) | 2013-06-25 | 2013-06-25 | Covering method of class 1E category K1 cables for nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103325497A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103992477A (en) * | 2014-05-07 | 2014-08-20 | 江苏凯诺电缆集团有限公司 | Method for preparation of polyimide siloxane/carbon fiber composite material by reactive extrusion |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0926202A1 (en) * | 1997-12-23 | 1999-06-30 | General Electric Company | Polyetherimide resin compositions |
| CN1332766A (en) * | 1998-10-29 | 2002-01-23 | 住友胶木株式会社 | Imide containing polymers made by bulk polymerization |
| JP2004189793A (en) * | 2002-10-16 | 2004-07-08 | Sumitomo Bakelite Co Ltd | Preparation method of polyimide resin |
| CN1563150A (en) * | 2004-04-15 | 2005-01-12 | 上海市合成树脂研究所 | Method for preparing polyetherimide through continuous extrusion reaction |
| CN202394573U (en) * | 2011-12-27 | 2012-08-22 | 江苏凯诺电缆集团有限公司 | 1E-level K1 type cable for nuclear power station |
| CN102876038A (en) * | 2012-10-24 | 2013-01-16 | 江苏科技大学 | Polyimide siloxane and carbon nanotube composite material and preparation method thereof |
-
2013
- 2013-06-25 CN CN2013102549837A patent/CN103325497A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0926202A1 (en) * | 1997-12-23 | 1999-06-30 | General Electric Company | Polyetherimide resin compositions |
| CN1332766A (en) * | 1998-10-29 | 2002-01-23 | 住友胶木株式会社 | Imide containing polymers made by bulk polymerization |
| JP2004189793A (en) * | 2002-10-16 | 2004-07-08 | Sumitomo Bakelite Co Ltd | Preparation method of polyimide resin |
| CN1563150A (en) * | 2004-04-15 | 2005-01-12 | 上海市合成树脂研究所 | Method for preparing polyetherimide through continuous extrusion reaction |
| CN202394573U (en) * | 2011-12-27 | 2012-08-22 | 江苏凯诺电缆集团有限公司 | 1E-level K1 type cable for nuclear power station |
| CN102876038A (en) * | 2012-10-24 | 2013-01-16 | 江苏科技大学 | Polyimide siloxane and carbon nanotube composite material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103992477A (en) * | 2014-05-07 | 2014-08-20 | 江苏凯诺电缆集团有限公司 | Method for preparation of polyimide siloxane/carbon fiber composite material by reactive extrusion |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102504407B (en) | Polypropylene composition for solar battery and preparation method thereof | |
| CN103059404A (en) | Radiation cross-linking low-smoke halogen-free flame-retardant polyolefin insulating material and preparation method thereof | |
| CN101781419A (en) | Organosilane crosslinked polyethylene insulation material for 20kV cable and preparation method thereof | |
| CN102585359B (en) | Modified polypropylene composition for solar cell back panel and preparation method thereof | |
| CN103421293A (en) | Polycarbonate composite material and preparation method thereof | |
| CN104804390A (en) | Blending composite super-tough PC (polycarbonate) material with weather resistance and corrosion resistance and application of PC material in mobile internet | |
| CN105566127A (en) | Triamine monomer and preparation method and application thereof | |
| CN103325497A (en) | Covering method of class 1E category K1 cables for nuclear power station | |
| CN110938274B (en) | Silane cross-linked semiconductive shielding material and preparation method and application thereof | |
| CN103435978A (en) | PET composite material and preparation method thereof | |
| CN115746445A (en) | Halogen-free low-smoke flame-retardant polyolefin sheath material and preparation method thereof | |
| CN109265791B (en) | High-voltage direct-current cable insulating material and preparation method thereof | |
| CN102276834A (en) | Preparation method of thermoplastic polyimide | |
| CN101602856A (en) | Polyimide resin of a kind of terminated with phenylacetylene anhydride naphthalene groups and preparation method thereof and purposes | |
| CN103289409A (en) | A preparation method for a silicone resin composite material having a good flexural property | |
| CN102675639B (en) | Polyetherimide product and method for preparing same | |
| CN112175303A (en) | Weather-resistant rubber cable sheath material and preparation method thereof | |
| CN106009224A (en) | Method for preparing silane crosslinking polyethylene insulating material for 10 kV or below black wires and cables through one step | |
| CN103992477A (en) | Method for preparation of polyimide siloxane/carbon fiber composite material by reactive extrusion | |
| CN102311634B (en) | PPO (poly phenylene oxide) composite material as well as preparation method and application thereof | |
| CN106188742A (en) | Two step method prepares the method for electric wire organosilane crosslinked polyethylene insulation material | |
| CN113930005A (en) | Semiconductive shielding material and preparation method and application thereof | |
| CN103205114A (en) | Preparation method of flame-retarded polyamide composite material modified by styrene-acrylonitrile copolymer | |
| CN101540219B (en) | Method for manufacturing 125 ℃ irradiation crosslinking power cable | |
| CN106009226A (en) | Organosilane crosslinked polyethylene wires and cables of 10 kV or below and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130925 |