CN109280365A - A kind of preparation method of super extra-high voltage lightweight insulator core - Google Patents
A kind of preparation method of super extra-high voltage lightweight insulator core Download PDFInfo
- Publication number
- CN109280365A CN109280365A CN201811065072.9A CN201811065072A CN109280365A CN 109280365 A CN109280365 A CN 109280365A CN 201811065072 A CN201811065072 A CN 201811065072A CN 109280365 A CN109280365 A CN 109280365A
- Authority
- CN
- China
- Prior art keywords
- preparation
- component
- high voltage
- core
- insulator
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/28—Glass
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Insulating Bodies (AREA)
- Insulators (AREA)
Abstract
The invention discloses a kind of preparation methods of super extra-high voltage lightweight insulator core.The super extra-high voltage used in composite insulator lightweight core material of this method preparation, density is only the 1/3 ~ 1/4 of the epoxy glass fiber composite material that current super extra-high voltage combined insulator uses, can make the weight of current super extra-high voltage solid core insulator reduces by 50% or more, and the excellent toughness with polyurethane material, inside filling is closely knit, and defect is few, and bonding force is excellent between glass fibre reinforced plastics casing, the usage safety performance of current super UHV transmission line is greatly improved in the features such as electrical insulation properties are excellent.In addition also have preparation process simple, do not need complex machines equipment, preparation process does not occur resin and burns core problem, is suitble to industrialized mass production.
Description
Technical field
The invention belongs to electrical field of compound material, and in particular to a kind of preparation of super extra-high voltage lightweight insulator core
Method.
Background technique
Super UHV transmission has the significant advantages such as transmission line capability is big, conveying distance is remote, loss is low, saving transmission of electricity corridor.
The super UHV transmission line composite insulator in current China, is to be formed by epoxy resin and glass fibre through pultrude process, tool
Have the advantages that structure is simple, mechanical tensile strength is excellent, can not puncture, anti-pollution characteristic it is brilliant.But it is solid core structure, with electricity
The raising of grade is pressed, insulation performance and usage safety performance require the diameter of insulator and length to significantly increase, to bring one
Series of problems.The increase of size causes the weight of insulator itself to increase severely, and brings great inconvenience to transport installation；In addition also
Bring the problems such as production efficiency is slow, boundary defect increases, on-line checking is difficult, core is burnt in the aggregation of solidification process heat；In addition, with
The increase of size, glass and epoxy resin contact surface area increase, internal flaw unavoidably increases, epoxy resin existence
Crisp problem, small defect easily form section and cause safety accident, thus the large scale solid core of epoxy glass fiber composite material preparation
Insulator, which exists, greatly uses security risk.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of preparation method of super extra-high voltage lightweight insulator core.It should
The lightweight insulator core material of method preparation, it is compound that density is less than the epoxy glass that current super extra-high voltage combined insulator uses
The 1/3 of material can make the weight of current super extra-high voltage solid core insulator reduce by 50% or more, and with polyurethane material
The features such as excellent toughness, inside filling is closely knit, and defect is few, and bonding force is excellent between glass fibre reinforced plastics casing, and electrical insulation properties are excellent,
The usage safety performance of current super UHV transmission line is greatly improved.In addition also have preparation process simple, do not need complexity
Machinery equipment, preparation process do not occur resin and burn core problem, are suitble to industrialized mass production.
A kind of preparation method of super UHV transmission line lightweight insulator core, comprising the following steps:
(1) A is pressed, 1.0 ~ 1.2:1 of molar ratio range computation of [- NCO] and [- OH] of B component simultaneously weighs A, B component,
Using containing the polyethers of [- OH], chain extender, crosslinking agent as component A, with the polyfunctionality isocyanate component containing [- NCO] for B
Component, the two are that 1.0 ~ 1.2:1 calculating weighs respectively by the molar ratio of [- NCO] and [- OH].
(2) glass microballoon is weighed by the 10% ~ 30% of component A quality, is thoroughly mixed in advance with component A uniformly.
(3) it is ready to prepare the mold of plug, uniformly smears polyurethane release agent, bottom end seal in its inner surface.
(4) component A that will be mixed with glass microballoon after being mixed evenly with B component, is vacuumized in vacuum drying oven and is removed
Gas after gas eliminates in material to be mixed, deflates and takes out material, be then poured into the mold being ready for.Mold is put into
Solidify at a certain temperature in baking oven, after polyurethane resin is fully cured, demoulding obtains lightweight insulator core.
Preferably, the polyethers component in the step (1) is polyoxypropylene polyol, polytetrahydrofuran polyol or plant
One or more of object oil polyalcohol；Isocyanate component is polymeric diphenylmethane diisocyanate or liquefaction diphenylmethyl
Alkane diisocyanate.
Preferably, the chain extender in the step (1) be ethylene glycol, propylene glycol, 1,4-butanediol, diglycol,
The one or more of dipropylene glycol.
Preferably, the crosslinking agent in the step (1) be glycerine, triethanolamine, diethanol amine, trimethylolpropane,
The one or more of pentaerythrite.
Preferably, the rate of closed hole of glass microballoon is required 85% or more in the step (1), and density is in 0.1 ~ 0.3g/cm3
Between.Preferably, in the step (2) glass microballoon additional amount, according to the density and glass microballoon of preparation lightweight core
Density determines.
Preferably, the molar ratio of [- NCO] and [- OH] of A/B component is 1.05 ~ 1.1:1 in the step (4).
Preferably, mold is put into 60 ~ 100 DEG C solidification 2 ~ 8 hours in convection oven in the step (4).
Beneficial effect
Super extra-high voltage prepared by the present invention lightweight insulator core material, using good toughness, the high polyurethane resin to insulate as base
Body, it is compound with height insulation low density glass microballon, generating polyurethane lightweight composite core rod is prepared by vacuum casting process, density is small
In 0.75g/cm3.The plug outer layer winds the glass fibre of certain thickness epoxy resin-impregnated, can be made into super spy after solidification
Ultra-high-tension power transmission line lightweight insulator.The insulator compared with existing super extra-high voltage combined insulator, weight reduce by 50% with
On, and good toughness, inside filling is closely knit, defect is few, has excellent bonding force between glass fibre reinforced plastics casing, has excellent electric
Insulation performance meets the long-term safety requirement of current super extra-high voltage environment composite insulator.In addition also there is preparation process
Simply, complex machines equipment is not needed, preparation process does not occur the advantages of resin burns core problem, is suitble to industrialized production.Poly- ammonia
Ester light material core filling insulator promotes and applies in super UHV transmission line, to the raising super extra-high voltage transmission line in China
Road safe operation property, reduces the risk that accident occurs, has great importance.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
A kind of preparation method of super extra-high voltage lightweight insulator core, comprising the following steps:
It (1) is 15 parts of THF-PO copolymer of NG210 with the trade mark, 45 parts of refining castor oil, polyethers MN500
25 parts, 4,110 12 parts of polyethers, 2 parts of diethylene glycol, 1 part of triethanolamine (100 parts total) is uniformly mixed into component A.To polymerize two
Methylenebis phenyl isocyanate (PAPI) is B component, and the two is that 1:0.8 weighs that ([- NCO] rubs with [- OH's] by A/B mass ratio
You are than about 1.1: 1).
(2) 0.55g/cm is prepared3Lightweight core material, density needed for calculating are 0.2g/cm3, rate of closed hole be 90% glass
The quality of microballon is the 22.2% of component A quality.Glass microballoon is weighed by calculation amount, is sufficiently stirred in advance with 100 parts of component As mixed
It closes uniform.
(3) it will be mixed with the component A and B component of glass microballoon, quickly stir 30 under 3000 revs/min with mechanical stirring ~
60s is then placed in vacuum drying oven after material color uniformity and vacuumizes degasification, after gas eliminates in material to be mixed,
It is poured into the mold being ready for.Mold is put into baking oven and is solidified 4 hours at 80 DEG C, it is 0.55g/ that demoulding, which obtains density,
cm3Lightweight insulator core.The super UHV transmission line lightweight insulator core material prepared in embodiment (1) method
Performance is as follows:
It take this kind of material as 320mm as diameter, wall thickness 20mm, wall body density of material is 2.2g/cm3Glass reinforced plastic it is extra-high
The core material of composite insulator is pressed, loss of weight ratio can reach 57.4%.
Embodiment 2
A kind of preparation method of super extra-high voltage lightweight insulator core material, comprising the following steps:
(1) 52 parts of refining castor oil, 35 parts of polyethers MN500,4,110 10 parts of polyethers, 2 parts of diethylene glycol, 1 part of triethanolamine is (altogether
100 parts of meter), it is uniformly mixed into component A, with polymeric diphenylmethane diisocyanate (PAPI) for B component, the two presses A/B matter
Amount is than being that 1:0.8 weighs (molar ratio of [- NCO] and [- OH] is about 1.1: 1).
(2) 0.60g/cm is prepared3Lightweight core material, density needed for calculating are 0.2g/cm3, rate of closed hole be 90% glass
The quality of microballon is the 20.0% of component A quality.Glass microballoon is weighed by calculation amount, is sufficiently stirred in advance with 100 parts of component As mixed
It closes uniform.
(3) it will be mixed with the component A and B component of glass microballoon, quickly stir 30 under 3000 revs/min with mechanical stirring ~
60s is then placed in vacuum drying oven after material color uniformity and vacuumizes degasification, after gas eliminates in material to be mixed,
It is poured into the mold being ready for.Mold is put into baking oven and is solidified 4 hours at 80 DEG C, it is 0.60g/ that demoulding, which obtains density,
cm3Lightweight insulator core.
It is as follows with lightweight insulator core material property with super UHV transmission line prepared by embodiment (2) method:
It take this kind of material as 320mm as diameter, wall thickness 20mm, wall body density of material is 2.2g/cm3Glass reinforced plastic it is extra-high
The core material of composite insulator is pressed, loss of weight ratio can reach 55.7%.
Embodiment 3
A kind of preparation method of super extra-high voltage lightweight insulator core material, comprising the following steps:
(1) 50 parts of refining castor oil, 35 parts of polyethers MN500,4,110 12 parts of polyethers, 2 parts of diethylene glycol, 1 part of triethanolamine is (altogether
100 parts of meter) it is uniformly mixed into component A, with the methyl diphenylene diisocyanate that liquefies (C-MDI) for B component, the two presses A/B matter
Amount is than being that 1:0.70 weighs (molar ratio of [- NCO] and [- OH] is about 1.07: 1).
(2) 0.60g/cm is prepared3Lightweight core material, density needed for calculating are 0.2g/cm3, rate of closed hole be 90% glass
The quality of microballon is the 22.2% of component A.Glass microballoon is weighed by calculation amount, is thoroughly mixed in advance with 100 parts of component As
It is even.
(3) it will be mixed with the component A and B component of glass microballoon, quickly stir 30 under 3000 revs/min with mechanical stirring ~
60s is then placed in vacuum drying oven after material color uniformity and vacuumizes degasification, after gas eliminates in material to be mixed,
It is poured into the mold being ready for.Mold is put into baking oven and is solidified 4 hours at 80 DEG C, it is 0.55g/ that demoulding, which obtains density,
cm3Lightweight insulator core.
It is as follows with lightweight insulator core material property with super UHV transmission line prepared by embodiment (3) method:
It take this kind of material as 320mm as diameter, wall thickness 20mm, wall body density of material is 2.2g/cm3Glass reinforced plastic it is extra-high
The core material of composite insulator is pressed, loss of weight ratio can reach 55.7%.
Comparative example 1
The composite material insulator that the extra-high voltage environment that Beijing glass steel institute compound Materials Co., Ltd is prepared with pultrude process uses,
Size are as follows: diameter 320mm, length 4500mm, density 2.20g/cm3, 796 kg of overall weight.Test surfaces resistivity
It is 6.4 × 1012 Ω, volume resistivity are 5.1 × 1014 Ω m, breakdown voltage are 20.8 kv/mm.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (6)
1. a kind of preparation method of super extra-high voltage lightweight insulator core, which comprises the following steps:
(1) lightweight insulator core A component is made according to the weight ratio of following raw materials according: containing [- OH] polyether polyol 70% ~
85%, chain extender 0.5% ~ 3%, crosslinking agent 0.2% ~ 1%；B group is divided into the polyfunctionality isocyanates containing [- NCO], and the two is pressed
The molar ratio of [- NCO] and [- OH] is that 1.0 ~ 1.2:1 calculating weighs respectively；
(2) glass microballoon is weighed by the 5% ~ 30% of component A quality, is thoroughly mixed in advance with component A uniformly；
(3) it is ready to prepare the mold of plug, uniformly smears polyurethane release agent, bottom end seal in its inner surface；
(4) component A that will be mixed with glass microballoon, after being mixed evenly in molar ratio with B component stirring, in vacuum drying oven
Degasification is vacuumized, after gas eliminates in material to be mixed, deflates and takes out material, be then poured into the mold being ready for, it will
Mold is put into baking oven to be solidified at a certain temperature, and after polyurethane resin is fully cured, demoulding obtains lightweight insulator core.
2. preparation method according to claim 1, which is characterized in that the polyethers component in the step (1) is polyoxygenated
One or more of propylene polyalcohol, polytetrahydrofuran polyol or vegetable oil polyol；Isocyanate component is polymerization two
Methylenebis phenyl isocyanate or liquefaction methyl diphenylene diisocyanate.
3. preparation method according to claim 1, which is characterized in that the rate of closed hole of glass microballoon is wanted in the step (2)
It asks 85% or more, density is in 0.1 ~ 0.3g/cm3。
4. preparation method according to claim 1, which is characterized in that the speed stirred in the step (4) is 1000 ~
5000 revs/min of revolving speeds stir 30 ~ 60s.
5. preparation method according to claim 1, which is characterized in that mold is put into convection oven in the step (4)
60 ~ 100 DEG C solidify 2 ~ 8 hours.
6. the lightweight insulator core of the preparation of method described in a kind of one of claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811065072.9A CN109280365B (en) | 2018-09-13 | 2018-09-13 | Preparation method of light insulator core body for extra-high voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811065072.9A CN109280365B (en) | 2018-09-13 | 2018-09-13 | Preparation method of light insulator core body for extra-high voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109280365A true CN109280365A (en) | 2019-01-29 |
| CN109280365B CN109280365B (en) | 2021-02-09 |
Family
ID=65180469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811065072.9A Active CN109280365B (en) | 2018-09-13 | 2018-09-13 | Preparation method of light insulator core body for extra-high voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109280365B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330629A (en) * | 2019-07-16 | 2019-10-15 | 华北电力大学（保定） | A kind of preparation method of the inner core packing material for composite insulation cross arm |
| CN110330632A (en) * | 2019-07-16 | 2019-10-15 | 华北电力大学（保定） | A kind of preparation method of the core packing material for composite insulation cross arm |
| CN110343233A (en) * | 2019-06-27 | 2019-10-18 | 全球能源互联网研究院有限公司 | A kind of high insulating polyimide potting compound and its preparation method and application |
| CN111326298A (en) * | 2020-04-07 | 2020-06-23 | 华北电力大学（保定） | Inner-filling light extra-high voltage composite insulating cross arm |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3941855A (en) * | 1973-07-27 | 1976-03-02 | Bayer Aktiengesellschaft | Shaped polyurethane articles and a method for making them |
| US4163095A (en) * | 1976-05-25 | 1979-07-31 | Bayer Aktiengesellschaft | Process for the solvent-free production of solid plastic moldings sealing compounds and insulations using a polyisocyanate mixture containing 2,4'-diisocyanatodiphenylmethane |
| CN102504523A (en) * | 2011-11-03 | 2012-06-20 | 中国电力科学研究院 | High-toughness polyurethane composite insulator core rod and preparation method thereof |
| CN102623111A (en) * | 2012-04-20 | 2012-08-01 | 唐苑雯 | Composite bar-shaped insulator mandrel |
| CN104177581A (en) * | 2013-05-27 | 2014-12-03 | 拜耳材料科技(中国)有限公司 | Polyurethane composition for polyurethane composite material |
-
2018
- 2018-09-13 CN CN201811065072.9A patent/CN109280365B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3941855A (en) * | 1973-07-27 | 1976-03-02 | Bayer Aktiengesellschaft | Shaped polyurethane articles and a method for making them |
| US4163095A (en) * | 1976-05-25 | 1979-07-31 | Bayer Aktiengesellschaft | Process for the solvent-free production of solid plastic moldings sealing compounds and insulations using a polyisocyanate mixture containing 2,4'-diisocyanatodiphenylmethane |
| CN102504523A (en) * | 2011-11-03 | 2012-06-20 | 中国电力科学研究院 | High-toughness polyurethane composite insulator core rod and preparation method thereof |
| CN102623111A (en) * | 2012-04-20 | 2012-08-01 | 唐苑雯 | Composite bar-shaped insulator mandrel |
| CN104177581A (en) * | 2013-05-27 | 2014-12-03 | 拜耳材料科技(中国)有限公司 | Polyurethane composition for polyurethane composite material |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343233A (en) * | 2019-06-27 | 2019-10-18 | 全球能源互联网研究院有限公司 | A kind of high insulating polyimide potting compound and its preparation method and application |
| CN110330629A (en) * | 2019-07-16 | 2019-10-15 | 华北电力大学（保定） | A kind of preparation method of the inner core packing material for composite insulation cross arm |
| CN110330632A (en) * | 2019-07-16 | 2019-10-15 | 华北电力大学（保定） | A kind of preparation method of the core packing material for composite insulation cross arm |
| CN111326298A (en) * | 2020-04-07 | 2020-06-23 | 华北电力大学（保定） | Inner-filling light extra-high voltage composite insulating cross arm |
| CN111326298B (en) * | 2020-04-07 | 2021-11-19 | 华北电力大学（保定） | Inner-filling light extra-high voltage composite insulating cross arm |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109280365B (en) | 2021-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109280365A (en) | A kind of preparation method of super extra-high voltage lightweight insulator core | |
| CN104672782B (en) | A kind of fiber-reinforced resin matrix compound material core and its manufacture method | |
| CN105419229B (en) | A kind of hollow combined insulator winding pipe and preparation method thereof | |
| CN102146196B (en) | Preparation method of high damping epoxy resin composite | |
| CN107266863B (en) | Nonlinear conductivity epoxy resin composite insulating material and preparation method thereof | |
| CN101845913B (en) | Composite material electric pole and preparation method thereof | |
| CN101494107B (en) | Method for producing sandstorm resistance insulator core pin with umbrella for railway | |
| CN103741238A (en) | Centrifugal cylinder made of carbon fiber composite materials and method for manufacturing centrifugal cylinder | |
| Chen | Glass fiber‐reinforced polymer composites for power equipment | |
| CN106158170A (en) | The preparation method of core rod of insulator | |
| CN109096620B (en) | Ethylene propylene diene monomer rubber-based direct-current cable accessory material and preparation method thereof | |
| CN103804681A (en) | Manufacturing method of driving wheel made of nylon-based gradient composite | |
| CN109192410A (en) | A kind of super UHV transmission line lightweight insulator core and preparation method thereof | |
| CN110343233A (en) | A kind of high insulating polyimide potting compound and its preparation method and application | |
| CN109627555A (en) | A kind of potent high temperature-resistant cable sheath and preparation method thereof | |
| CN107987479A (en) | A kind of preparation process of compound porcelain insulator | |
| CN114670470A (en) | Bismaleimide resin carbon fiber winding, curing and forming process | |
| CN109467932B (en) | Rubber material prepared from waste insulating silicone rubber and application thereof | |
| CN113270236A (en) | Disc-shaped suspension type composite insulator and manufacturing method thereof | |
| CN113199772A (en) | Remanufacturing process for inner end platform of guide stationary blade assembly at fan outlet of aircraft engine | |
| CN105820568A (en) | Preparation method of high temperature resistant anti-atomic oxygen irradiation polyimide composite material | |
| CN105383327B (en) | A kind of electric locomotive contact net section insulator insulation slide plate | |
| CN109293878A (en) | A kind of preparation method of high insulating polyimide hard bubble bead | |
| CN104992800B (en) | A kind of manufacture method of the combined core rod of insulator of multicore | |
| CN109294270A (en) | A kind of composite material in transmission line of electricity communications tower |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |