CN102276901A - Method for preparing ultraclean crosslinkable polyethylene insulation material of high-voltage cable - Google Patents
Method for preparing ultraclean crosslinkable polyethylene insulation material of high-voltage cable Download PDFInfo
- Publication number
- CN102276901A CN102276901A CN2011102016570A CN201110201657A CN102276901A CN 102276901 A CN102276901 A CN 102276901A CN 2011102016570 A CN2011102016570 A CN 2011102016570A CN 201110201657 A CN201110201657 A CN 201110201657A CN 102276901 A CN102276901 A CN 102276901A
- Authority
- CN
- China
- Prior art keywords
- insulation material
- polyethylene insulation
- linking agent
- preparation
- pellet
- 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.)
- Granted
Links
Landscapes
- Organic Insulating Materials (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a method for preparing an ultraclean crosslinkable polyethylene insulation material of a high-voltage cable, relates to a method for preparing a crosslinkable polyethylene insulation material and solves the problems of low purity, easiness for generating gel and the phenomenon of pre-crosslinking, poor stability of product quality, low production efficiency and high cost of the current method for preparing the crosslinkable polyethylene insulation material. The method comprises the following steps of: taking raw materials; uniformly mixing polyvinyl resin and an antioxidant to obtain a material; filtering, pelletizing, dehydrating and drying the material and mixing the obtained material and a cross linking agent to obtain aggregates mixed with the cross linking agent; and feeding the aggregates into an adsorption material bin to homogenize the aggregates and cooling the obtain product to complete preparation of the crosslinkable polyethylene insulation material. In the method, the gel and the phenomenon of pre-crosslinking are not generated in the production process and equipment does not need to be shut down to be cleaned in the production, so that the production efficiency is increased and the cost is reduced. The number and the sizes of impurities in the crosslinkable polyethylene insulation material reach the level of an imported like product. Each kilogram of cable material contains less than 10 impurities of 70-100 mum and does not contain impurities of more than 100 mum. The ultraclean requirement is met. The product quality has long-term stability.
Description
Technical field
The present invention relates to a kind of preparation method of crosslinkable polyethylene Insulation Material.
Background technology
Electric wire is the key part of electric power transportation, and insulating material wherein is one of key factor of decision cable voltage ability.Crosslinked polyethylene (XLPE) becomes the main insulating material of high-tension cable in recent years because of having excellent dielectric properties and good thermotolerance, processing characteristics.
The production of the crosslinkable polyethylene cable material of 110kV, 220kV and above grade at present exists purity not up to standard, easily produces gel and precrosslink and the problem of constant product quality difference in the production process.
The name be called " a kind of production method of high-voltage crosslinkable polyethylene cable material (and application number: 200910073453.6, the applying date: on December 18th, 2009) have following problem in " the patent:
Its step 4: the melt after the filtration enters in second single screw rod reciprocating kneading machine, weight-loss type liquid claims the crosslink agent DCP after thawing and the filtration is injected in second single screw rod reciprocating kneading machine simultaneously, the feeding speed that weight-loss type liquid claims is per hour 10 kilograms, melt after the filtration and crosslink agent DCP are evenly mixing, melting temperature is 115 ℃, obtains containing the polyethylene of crosslink agent DCP.
(1) melt has passed through purification filtering before this step, if but raise because of unexpected factor causes the mixing roll internal temperature in this step, linking agent is decomposed, precrosslink then can take place or form gel, the material cleanliness factor does not reach the relevant criterion requirement, can't be used for high-voltage cable insulating.
When (2) adopting this method to produce, the inner regional area of mixing roll may accumulate the polyethylene that contains linking agent on a small quantity.If these materials overstand in mixing roll may form gel gradually or precrosslink takes place, and enter in the finished product material under the effect of heat, make the material cleanliness factor not reach the relevant criterion requirement.For avoiding occurring this kind situation, this method continuous production time does not generally allow to surpass 7 days, must shut down behind the ordinary production certain hour, and mixing roll is opened cleaning, and this can reduce production efficiency and increase production cost.
Summary of the invention
The objective of the invention is to exist purity low for the preparation that solves existing crosslinkable polyethylene Insulation Material, be easy to generate gel, precrosslink, the problem that constant product quality is poor, production efficiency is low and cost is high, and a kind of preparation method of high-tension cable super-clean cross-linkable polyethylene Insulation Material is provided.
The preparation method of high-tension cable super-clean cross-linkable polyethylene Insulation Material carries out according to the following steps: one, take by weighing 100 parts polyvinyl resin, 0.2～0.5 part oxidation inhibitor and 1.5～2.0 parts linking agent according to weight part;
Two, polyvinyl resin and the oxidation inhibitor that takes by weighing is joined in the mixing roll simultaneously, mixing even under temperature is 130～200 ℃, get material;
Three, material enters in the Melt Pump, Melt Pump makes streams cross double hydraulic pressure draping strainer and filters, material after the filtration enters single screw pelletizer granulation, the gained pellet cools off and is transported to through pure water and carries out centrifuge dehydration and drying treatment in the centrifuge, be preheating to 60～90 ℃ then, enter rotary drum mixer and insulation again, the linking agent that takes by weighing is sprayed the surface of pellet at 60～90 ℃, be rotated further to the pellet surface drying, obtain to be mixed with the pellet of linking agent;
Four, the pellet that is mixed with linking agent enters the absorption feed bin, is homogenizing 3～20h under 60～90 ℃ the condition in temperature, is cooled to 30～50 ℃ then, promptly finishes the preparation of high-tension cable super-clean cross-linkable polyethylene Insulation Material;
Wherein the model of polyvinyl resin is LD200BW in the step 1; Oxidation inhibitor is four [β-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester; Linking agent is a dicumyl peroxide.
The preparation method of medium and high voltage cable super-clean cross-linkable polyethylene Insulation Material of the present invention does not produce gel and precrosslink in the production process; After testing, the quantity of impurity and size reach the level of import like product (70～100 μ m foreign matter contents are less than 10 in every kilogram of CABLE MATERIALS in the crosslinkable polyethylene Insulation Material, do not contain impurity greater than 100 μ m), reach the ultra-clean requirement, and quality product has permanent stability.
The present invention compares with existing method has following beneficial effect:
(1) after evenly mixing in mixing roll, the filtration of polyvinyl resin and oxidation inhibitor, the granulation, through pure water cooling and be transported to the centrifuge that is positioned at the production line highest point, production line is airtight fully in the production process of back, do not use air to carry, the gravity by material falls step by step fully; This mode of production has been avoided the material after airborne impurity enters filtration, purification, guarantees that finished-product material has higher purity;
(2) utilize the rotary drum mixer that linking agent (dicumyl peroxide) is tentatively diffused in the pellet (the melt blending particle of polyvinyl resin and oxidation inhibitor); The special internal structure of rotary drum mixer guarantees to make liquid linking agent and pellet uniform mixing in it gyrates process, and under the effect of certain temperature, spread gradually to granule interior, particle surface reaches dry within a certain period of time, and this has at first guaranteed the homogeneity of the preliminary diffusion of linking agent; Rotary drum mixer water jacket heats, rotates continuously and special internal structure can also guarantee that its internal temperature is even, and its inside does not have the parts of relative movement, can not avoid producing gel and precrosslink because of friction produces localized hyperthermia;
(3) after linking agent tentatively diffused into pellet, this pellet also will keep certain hour by constant temperature in absorbing feed bin, spread in pellet evenly up to linking agent;
(4) absorb the pellet first outer that is mixed with linking agent that the special internal structure of feed bin can guarantee its inside, the time of portion's stop within it equates the diffusion uniformity unanimity;
(5) but long-time continuous production under the normal circumstances, need not shut down cleaning in the production, improved production efficiency and reduced production cost.
Embodiment
Embodiment one: the preparation method of present embodiment high-tension cable super-clean cross-linkable polyethylene Insulation Material carries out according to the following steps: one, take by weighing 100 parts polyvinyl resin, 0.2～0.5 part oxidation inhibitor and 1.5～2.0 parts linking agent according to weight part;
Two, polyvinyl resin and the oxidation inhibitor that takes by weighing is joined in the mixing roll simultaneously, mixing even under temperature is 130～200 ℃, get material;
Three, material enters in the Melt Pump, Melt Pump makes streams cross double hydraulic pressure draping strainer and filters, material after the filtration enters single screw pelletizer granulation, the gained pellet cools off and is transported to through pure water and carries out centrifuge dehydration and drying treatment in the centrifuge, be preheating to 60～90 ℃ then, enter rotary drum mixer and insulation again, the linking agent that takes by weighing is sprayed the surface of pellet at 60～90 ℃, be rotated further to the pellet surface drying, obtain to be mixed with the pellet of linking agent;
Four, the pellet that is mixed with linking agent enters the absorption feed bin, is homogenizing 3～20h under 60～90 ℃ the condition in temperature, is cooled to 30～50 ℃ then, promptly finishes the preparation of high-tension cable super-clean cross-linkable polyethylene Insulation Material;
Wherein the model of polyvinyl resin is LD200BW in the step 1; Oxidation inhibitor is four [β-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester; Linking agent is a dicumyl peroxide.
Polyvinyl resin adopts dust remover and metal catcher in the present embodiment step 1, purifies starting material particulate surface respectively and removes in the starting material metallic impurity than big scale.
Dust remover adopts the SDS series static gumming machine of Dongguan Xinyi Electro-thermal Machinery Co., Ltd, and metal catcher adopts German QUICKTRON apparatus for separating metals.
Melt Pump adopts the CHEM series Melt Pump of German Witter pump industry technology company limited in the present embodiment step 3.
Double hydraulic pressure draping strainer adopts the AJSZ series double hydraulic pressure draping strainer of Anji, Zhengzhou City chemical plastic machine works in the present embodiment step 3.
Single screw pelletizer adopts the DJ series single screw extrusion machine of Nanjing Chengmeng Plastic Mechanical Industry Co. Ltd. in the present embodiment step 3.
Double hydraulic pressure draping strainer can filter the impurity of all particle diameters in the material 〉=100 μ m in the present embodiment step 3.
Pellet is through pure water cooling and be transported in the centrifuge in the present embodiment step 3, and centrifuge herein is positioned at the production line highest point.
The rotary drum mixer adopts the ZGH series rotary drum mixer of Kazakhstan general electrical technology limited liability company in the present embodiment step 3.
Rotary drum mixer in the present embodiment step 3, rotating the temperature be heated to pellet is 60～90 ℃, can guarantee that its inner pellet temperature is even, can make simultaneously the linking agent of spray can be in pellet uniform distribution.
The pellet that is mixed with linking agent in the present embodiment step 4 enters the absorption feed bin, is homogenizing under 60～90 ℃ the condition in temperature, can guarantee the pellet first outer that is mixed with linking agent of its inside, and portion equates time of stopping within it.
Gained high-tension cable super-clean cross-linkable polyethylene Insulation Material in cooling back in the present embodiment, the follow-up batch mixing feed bin that enters, the pellet that is mixed with linking agent that enters the batch mixing feed bin with different time is mixed in the batch mixing feed bin once more, the realization serialization is produced, and obtains large batch of high-tension cable super-clean cross-linkable polyethylene Insulation Material.
Embodiment two: what present embodiment and embodiment one were different is to take by weighing 100 parts polyvinyl resin, 0.2 part oxidation inhibitor and 1.5 parts linking agent according to weight part in the step 1.Other step and parameter are identical with embodiment one.
Embodiment three: what present embodiment and embodiment one were different is to take by weighing 100 parts polyvinyl resin, 0.5 part oxidation inhibitor and 2.0 parts linking agent according to weight part in the step 1.Other step and parameter are identical with embodiment one.
Embodiment four: what present embodiment and embodiment one were different is to take by weighing 100 parts polyvinyl resin, 0.3 part oxidation inhibitor and 1.8 parts linking agent according to weight part in the step 1.Other step and parameter are identical with embodiment one.
Embodiment five: what present embodiment was different with one of embodiment one to four is mixing even under temperature is 130 ℃ in the step 2, gets material.Other step and parameter are identical with one of embodiment one to four.
Embodiment six: what present embodiment was different with one of embodiment one to four is mixing even under temperature is 200 ℃ in the step 2, gets material.Other step and parameter are identical with one of embodiment one to four.
Embodiment seven: what present embodiment was different with one of embodiment one to four is mixing even under temperature is 160 ℃ in the step 2, gets material.Other step and parameter are identical with one of embodiment one to four.
Embodiment eight: what present embodiment was different with one of embodiment one to seven is that mixing roll is twin-screw mixer machine or single screw rod reciprocating kneading machine in the step 2.Other step and parameter are identical with one of embodiment one to seven.
Embodiment nine: present embodiment is different with one of embodiment one to eight is that the specification of granulation in the step 3 is diameter 3.5mm, thickness 2～3.5mm.Other step and parameter are identical with one of embodiment one to eight.
Embodiment ten: present embodiment is different with one of embodiment one to nine is that each of double hydraulic pressure draping strainer is filtered the filtering net that haves three layers is installed on reticulum in the step 3.Other step and parameter are identical with one of embodiment one to nine.
Embodiment 11: what present embodiment was different with one of embodiment one to ten is that the pellet that is mixed with linking agent in the step 4 enters the absorption feed bin, is homogenizing 20h under 60 ℃ the condition in temperature, is cooled to 30 ℃ then.Other step and parameter are identical with one of embodiment one to ten.
Embodiment 12: what present embodiment was different with one of embodiment one to ten is that the pellet that is mixed with linking agent in the step 4 enters the absorption feed bin, is homogenizing 3h under 90 ℃ the condition in temperature, is cooled to 50 ℃ then.Other step and parameter are identical with one of embodiment one to ten.
Embodiment 13: what present embodiment was different with one of embodiment one to ten is that the pellet that is mixed with linking agent in the step 4 enters the absorption feed bin, is homogenizing 10h under 80 ℃ the condition in temperature, is cooled to 40 ℃ then.Other step and parameter are identical with one of embodiment one to ten.
Embodiment 14: the preparation method of present embodiment high-tension cable super-clean cross-linkable polyethylene Insulation Material carries out according to the following steps: one, take by weighing 100 parts polyvinyl resin, 0.3 part oxidation inhibitor and 2.0 parts linking agent according to weight part;
Two, polyvinyl resin and the oxidation inhibitor that takes by weighing is joined in the mixing roll simultaneously, mixing even under temperature is 150 ℃, get material;
Three, material enters in the Melt Pump, Melt Pump makes streams cross double hydraulic pressure draping strainer and filters, material after the filtration enters single screw pelletizer granulation, the gained pellet cools off and is transported to through pure water and carries out centrifuge dehydration and drying treatment in the centrifuge, be preheating to 80 ℃ then, enter rotary drum mixer and insulation again, the linking agent that takes by weighing is sprayed the surface of pellet at 80 ℃, be rotated further to the pellet surface drying, obtain to be mixed with the pellet of linking agent;
Four, the pellet that is mixed with linking agent enters the absorption feed bin, is homogenizing 10h under 80 ℃ the condition in temperature, is cooled to 40 ℃ then, promptly finishes the preparation of high-tension cable super-clean cross-linkable polyethylene Insulation Material;
Wherein the model of polyvinyl resin is LD200BW in the step 1; Oxidation inhibitor is four [β-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester; Linking agent is a dicumyl peroxide.
Preparation gained high-tension cable super-clean cross-linkable polyethylene Insulation Material does not produce gel and precrosslink in the present embodiment in the production process; After testing, the quantity of impurity and size reach the level of import like product (70～100 μ m foreign matter contents are less than 10 in every kilogram of CABLE MATERIALS in the crosslinkable polyethylene Insulation Material, do not contain impurity greater than 100 μ m), reach the ultra-clean requirement, and quality product has permanent stability.
Claims (7)
1. the preparation method of a high-tension cable super-clean cross-linkable polyethylene Insulation Material is characterized in that the preparation method of high-tension cable super-clean cross-linkable polyethylene Insulation Material carries out according to the following steps: one, take by weighing 100 parts polyvinyl resin, 0.2～0.5 part oxidation inhibitor and 1.5～2.0 parts linking agent according to weight part;
Two, polyvinyl resin and the oxidation inhibitor that takes by weighing is joined in the mixing roll simultaneously, mixing even under temperature is 130～200 ℃, get material;
Three, material enters in the Melt Pump, Melt Pump makes streams cross double hydraulic pressure draping strainer and filters, material after the filtration enters single screw pelletizer granulation, the gained pellet cools off and is transported to through pure water and carries out centrifuge dehydration and drying treatment in the centrifuge, be preheating to 60～90 ℃ then, enter rotary drum mixer and insulation again, the linking agent that takes by weighing is sprayed the surface of pellet at 60～90 ℃, be rotated further to the pellet surface drying, obtain to be mixed with the pellet of linking agent;
Four, the pellet that is mixed with linking agent enters the absorption feed bin, is homogenizing 3～20h under 60～90 ℃ the condition in temperature, is cooled to 30～50 ℃ then, promptly finishes the preparation of high-tension cable super-clean cross-linkable polyethylene Insulation Material;
Wherein the model of polyvinyl resin is LD200BW in the step 1; Oxidation inhibitor is four [β-(3 ', 5 '-di-t-butyl-4 '-hydroxy phenyl) propionic acid] pentaerythritol ester; Linking agent is a dicumyl peroxide.
2. the preparation method of a kind of high-tension cable super-clean cross-linkable polyethylene Insulation Material according to claim 1 is characterized in that taking by weighing 100 parts polyvinyl resin, 0.3 part oxidation inhibitor and 1.8 parts linking agent according to weight part in the step 1.
3. the preparation method of a kind of high-tension cable super-clean cross-linkable polyethylene Insulation Material according to claim 1 and 2, it is characterized in that in the step 2 temperature be 160 ℃ mixing down evenly, material.
4. the preparation method of a kind of high-tension cable super-clean cross-linkable polyethylene Insulation Material according to claim 1 is characterized in that mixing roll is twin-screw mixer machine or single screw rod reciprocating kneading machine in the step 2.
5. the preparation method of a kind of high-tension cable super-clean cross-linkable polyethylene Insulation Material according to claim 1, the specification that it is characterized in that granulation in the step 3 are diameter 3.5mm, thickness 2～3.5mm.
6. the preparation method of a kind of high-tension cable super-clean cross-linkable polyethylene Insulation Material according to claim 1, each that it is characterized in that double hydraulic pressure draping strainer in the step 3 is filtered the filtering net that haves three layers is installed on reticulum.
7. according to the preparation method of claim 1,2,4,5 or 6 described a kind of high-tension cable super-clean cross-linkable polyethylene Insulation Material, it is characterized in that the pellet that is mixed with linking agent in the step 4 enters the absorption feed bin, be homogenizing 10h under 80 ℃ the condition in temperature, be cooled to 30 ℃ then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110201657 CN102276901B (en) | 2011-07-19 | 2011-07-19 | Method for preparing ultraclean crosslinkable polyethylene insulation material of high-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110201657 CN102276901B (en) | 2011-07-19 | 2011-07-19 | Method for preparing ultraclean crosslinkable polyethylene insulation material of high-voltage cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102276901A true CN102276901A (en) | 2011-12-14 |
| CN102276901B CN102276901B (en) | 2013-03-27 |
Family
ID=45102663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110201657 Expired - Fee Related CN102276901B (en) | 2011-07-19 | 2011-07-19 | Method for preparing ultraclean crosslinkable polyethylene insulation material of high-voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102276901B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636511A (en) * | 2012-05-18 | 2012-08-15 | 哈尔滨理工大学 | Test method of optimal cross-linking agent diffusion time in production process of high-voltage cable material |
| CN103319774A (en) * | 2013-07-01 | 2013-09-25 | 哈尔滨理工大学 | Cross-linkable inorganic nano-LDPE (low-density polyethylene)/SiOx polymer composite material and preparation method thereof |
| CN106003462A (en) * | 2016-08-05 | 2016-10-12 | 浙江万马高分子材料有限公司 | Direct production method and device of ultra-clean high-voltage power cable insulation material |
| CN106346624A (en) * | 2016-09-26 | 2017-01-25 | 高团结 | Production method of high-voltage crosslinkable polyethylene cable material |
| CN107383538A (en) * | 2017-08-10 | 2017-11-24 | 全球能源互联网研究院 | High voltage direct current cable high-dispersion nano composite ultra-clean Insulation Material and preparation method thereof |
| CN107973961A (en) * | 2017-12-08 | 2018-05-01 | 广东技塑新材料股份有限公司 | It is micro- to be crosslinked super stress crack resistant non halogen flame retardant polyolefin composite and preparation method |
| CN108285565A (en) * | 2018-01-12 | 2018-07-17 | 安徽滁州德威新材料有限公司 | Extra-high-tension cable ultra-clean processes for chemically crosslinked polyethylene Insulation Material and preparation method |
| CN108623877A (en) * | 2018-04-17 | 2018-10-09 | 全球能源互联网研究院有限公司 | A kind of high voltage direct current cable insulating materials and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1632883A (en) * | 2004-12-03 | 2005-06-29 | 宋鸿文 | Method for production of 110KV class XLPE cable insulation material |
| CN101456985A (en) * | 2007-12-12 | 2009-06-17 | 青岛汉缆股份有限公司 | Method for producing super-clean cross-linkable polyethylene insulation material |
| CN101733855A (en) * | 2009-12-18 | 2010-06-16 | 哈尔滨理工大学 | Method for producing high-voltage crosslinkable polyethylene cable material |
-
2011
- 2011-07-19 CN CN 201110201657 patent/CN102276901B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1632883A (en) * | 2004-12-03 | 2005-06-29 | 宋鸿文 | Method for production of 110KV class XLPE cable insulation material |
| CN101456985A (en) * | 2007-12-12 | 2009-06-17 | 青岛汉缆股份有限公司 | Method for producing super-clean cross-linkable polyethylene insulation material |
| CN101733855A (en) * | 2009-12-18 | 2010-06-16 | 哈尔滨理工大学 | Method for producing high-voltage crosslinkable polyethylene cable material |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636511A (en) * | 2012-05-18 | 2012-08-15 | 哈尔滨理工大学 | Test method of optimal cross-linking agent diffusion time in production process of high-voltage cable material |
| CN102636511B (en) * | 2012-05-18 | 2015-05-13 | 哈尔滨理工大学 | Test method of optimal cross-linking agent diffusion time in production process of high-voltage cable material |
| CN103319774A (en) * | 2013-07-01 | 2013-09-25 | 哈尔滨理工大学 | Cross-linkable inorganic nano-LDPE (low-density polyethylene)/SiOx polymer composite material and preparation method thereof |
| CN103319774B (en) * | 2013-07-01 | 2015-08-26 | 哈尔滨理工大学 | Crosslinkable inorganic nano LDPE/SiOx polymer composites |
| CN106003462A (en) * | 2016-08-05 | 2016-10-12 | 浙江万马高分子材料有限公司 | Direct production method and device of ultra-clean high-voltage power cable insulation material |
| CN106003462B (en) * | 2016-08-05 | 2019-03-26 | 浙江万马高分子材料有限公司 | For ultra-clean high voltage power cable insulating materials direct method production process and device |
| CN106346624A (en) * | 2016-09-26 | 2017-01-25 | 高团结 | Production method of high-voltage crosslinkable polyethylene cable material |
| CN107383538A (en) * | 2017-08-10 | 2017-11-24 | 全球能源互联网研究院 | High voltage direct current cable high-dispersion nano composite ultra-clean Insulation Material and preparation method thereof |
| CN107973961A (en) * | 2017-12-08 | 2018-05-01 | 广东技塑新材料股份有限公司 | It is micro- to be crosslinked super stress crack resistant non halogen flame retardant polyolefin composite and preparation method |
| CN108285565A (en) * | 2018-01-12 | 2018-07-17 | 安徽滁州德威新材料有限公司 | Extra-high-tension cable ultra-clean processes for chemically crosslinked polyethylene Insulation Material and preparation method |
| CN108623877A (en) * | 2018-04-17 | 2018-10-09 | 全球能源互联网研究院有限公司 | A kind of high voltage direct current cable insulating materials and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102276901B (en) | 2013-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102276901B (en) | Method for preparing ultraclean crosslinkable polyethylene insulation material of high-voltage cable | |
| CN102336947B (en) | Preparation method of ultra-smooth semiconductive shielding material for high-voltage crosslinked polyethylene insulated cable | |
| CN102837408B (en) | Double screw extruder and method for using same to prepare light-smell polypropylene | |
| WO2019201153A1 (en) | Insulation material for high-voltage direct current cable and preparation method therefor | |
| CN101733855B (en) | Method for producing high-voltage crosslinkable polyethylene cable material | |
| CN203994316U (en) | A kind of comminutor | |
| CN107383538A (en) | High voltage direct current cable high-dispersion nano composite ultra-clean Insulation Material and preparation method thereof | |
| CN101456985B (en) | Method for producing super-clean cross-linkable polyethylene insulation material | |
| CN102241848A (en) | Post-absorption process of peroxide cross-linking polyethylene insulating material | |
| CN102864516B (en) | Manufacture method for producing high-shrinkage regenerated terylene short fiber with recovered polyester bottle chips | |
| CN101182377A (en) | After-absorbing technique for electric cable material | |
| CN104629041B (en) | Nylon-6 continuous polymerization melt vacuum takes off single production technology and equipments | |
| CN111876850B (en) | Polyphenylene sulfide composite melt-spun fiber with composite antioxidant dispersed in gradient manner and preparation method thereof | |
| TR201815867T4 (en) | Crosslinkable polyethylene compounds production apparatus and method. | |
| CN104262770A (en) | Preparation technique of silane crosslinked polyethylene cable material by one-step process | |
| CN111546602A (en) | Injection molding particle extruder capable of improving plasticizing degree | |
| CN104448493B (en) | A kind of direct current cables insulating materials | |
| CN108831634A (en) | A kind of cable extruding machine of band preheating | |
| CN201493974U (en) | Extrusion-granulating equipment of 35kV-110kV class XLPE insulated cable | |
| CN103242463A (en) | Method for preparing polypropylene with high melt index | |
| CN102357941A (en) | Manufacture method of high-level chemical cross-linked polyethylene cable insulation materials | |
| CN109836694A (en) | A kind of preparation method of silane Insulation Material | |
| CN208180006U (en) | A kind of FEP process equipment of efficient stable | |
| CN103059342B (en) | Preparation method of modified polyethylene double-wall l corrugated pipe drying agent | |
| CN205202074U (en) | Many feed inlets double screw extruder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20130719 |