CN107057355A - The preparation facilities and method of the silicon rubber of room for improvement electric charge rapid dispersion - Google Patents
The preparation facilities and method of the silicon rubber of room for improvement electric charge rapid dispersion Download PDFInfo
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- CN107057355A CN107057355A CN201710174415.4A CN201710174415A CN107057355A CN 107057355 A CN107057355 A CN 107057355A CN 201710174415 A CN201710174415 A CN 201710174415A CN 107057355 A CN107057355 A CN 107057355A
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- Prior art keywords
- silicon
- roller
- silicone rubber
- rapid dispersion
- silicon carbide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The invention discloses the preparation facilities of the silicon rubber of room for improvement electric charge rapid dispersion and method, device includes electronics Libra, drying box, vulcanizer and the kneading machine being blended for silicone rubber matrix and filler, and kneading machine includes roller, heater, speed setting unit and timing means.Preparation method comprises the following steps：Silicone rubber matrix is weighed by electronics Libra and filler be placed in it is standby in 60 DEG C of drying box；Silicone rubber matrix, nano silicon and HMDS, multi-vinyl silicone oil, micrometer silicon carbide silicon, nanometer silicon carbide and double two or five vulcanizing agents addition roller are kneaded successively, the silicon rubber reinforced insulation material of space charge rapid dispersion is finally obtained in vulcanizer.The evanishment of silicone rubber insulation material Space-charge is significantly improved by the inventive method；And do not influence the mechanical performance of cable accessory silicon rubber reinforced insulation itself；Production technology and simple flow, and course of reaction is stably and controllable.
Description
Technical field
It is to be related to a kind of improvement preparation there is space charge quickly to disappear specifically the present invention relates to electro-engineering field
Dissipate the preparation facilities and method of the direct current cables annex silicon rubber reinforced insulation material of effect.
Background technology
With the development of high-tension transmission technology, extensive interconnected network focuses on all the more the efficiency and security of its transmission of electricity.
Current high voltage dc transmission technology is extensive with the advantage such as its floor space is few, line loss is low, line construction is relatively simple
Using.In actual motion, direct current cables system insulation is in unipolar high voltage environment for a long time, easily cause insulation ag(e)ing,
The problems such as puncturing, the direct current cables annex especially with labyrinth, its space charge accumulation and local electric field distortion phenomenon
It is particularly acute.Therefore, space charge is just turning into one of emphasis that recent direct current cables annex insulate.
Some nearest researchs show that nanofiller polymers composite unique energy in terms of many is this
Material is generally while dielectric material characteristic is maintained, using the teaching of the invention it is possible to provide more superior thermomechanical property.For example, research shows in ring
Nano level titanium dioxide granule is added in oxygen tree fat, there is obvious inhibition to its space-charge accumulation.These polymerizations
The lifting of thing nano composite material electric property be typically the larger surface area of (i) nano particle for being caused by following original make itself and
Polymeric matrix forms larger interaction region；(ii) nano particle changes the microstructure of composite；(iii) receive
The less size of rice grain reduces the internal electric field of composite；(iv) nano particle changes composite Space-charge
Distribution.
In addition, many researchs are also indicated that, using with electrical conductivity with the inorganic matter ceramic particle of electric field change characteristic as filling out
Fill thing to mix with polymeric matrix, resulting composites have the conductance property of nonlinear change.Such composite wood
Material is used as field gradient material in the electric insulation such as direct current cables annex key position.For example, there is research to point out,
Epoxy resin/zinc oxide composite has nonlinear electrical characteristic, this non-linear so that material bulk conductivity, surface electricity
The characteristics such as lotus, electricity tree and electric trace are significantly improved, while its insulating properties under operating mode voltage do not occur substantially
Weaken；In addition, the polymeric material expansion research that ABB AB has also filled for nonlinear grain, and have developed one kind
The direct current cables APPENDIX MATERIALSThe with field gradient effect that can be practical.
Based on having obtained at present on nano material and the achievement in research of nonlinear grain filler, how both to be tied
Close, so that the improvement for realizing to the silicon rubber insulation with space charge rapid dispersion ability turns into one and urgently to be resolved hurrily asked
Topic.
The content of the invention
The invention aims to overcome it is of the prior art it is not enough there is provided one kind by nano material and inorganic filler
It is non-linear combine improve prepare with space charge rapid dispersion act on direct current cables annex silicon rubber reinforced insulation
The device and method of material.
The purpose of the present invention is achieved through the following technical solutions：
The preparation facilities of the silicon rubber of room for improvement electric charge rapid dispersion, including electronics Libra, drying box, vulcanizer and use
The kneading machine being blended in silicone rubber matrix and filler, the kneading machine includes roller, heater, speed setting unit and timing
Device.
The method of the preparation facilities of the silicon rubber of room for improvement electric charge rapid dispersion, comprises the following steps：
(1) silicone rubber matrix and filler are weighed by electronics Libra；The filler includes nano silicon, hexamethyl two
Silazane, multi-vinyl silicone oil, micrometer silicon carbide silicon, nanometer silicon carbide and double two or five vulcanizing agents；
(2) above-mentioned silicone rubber matrix and filler are placed in standby in 60 DEG C of baking oven；
(3) kneading machine roller is heated and roller temperature is maintained at 30-50 DEG C, adjusting roller rotating speed is 20-40r/
min；By silicone rubber matrix input roller mixing 2-4min；
(4) nano silicon and HMDS are added in roller simultaneously and mixed with silicone rubber matrix, after
Continuous mixing 8-12min；
(5) multi-vinyl silicone oil is added into roller, continues to knead 8-12min；
(6) micrometer silicon carbide silicon is added into roller, continues to knead 12-18min；
(7) nanometer silicon carbide is added into roller, continues to knead 12-18min；
(8) double two or five vulcanizing agents are added into roller, continues to obtain rubber unvulcanizate after kneading 10-15min；
(9) vulcanizer is preheated to 160 DEG C and keeping temperature is constant, taken out rubber unvulcanizate and be positioned in vulcanizer,
The silicone rubber insulation material acted on space charge rapid dispersion is obtained after hot pressing 15min under conditions of 10MPa.
The silicone rubber matrix, nano silicon, HMDS, multi-vinyl silicone oil, micrometer silicon carbide silicon, receive
The proportioning of rice carborundum and double two or five vulcanizing agents is：100:20:5:1.3:15:15:1.
Compared with prior art, the beneficial effect that technical scheme is brought is：
(1) evanishment of silicone rubber insulation material Space-charge is further improved；
(2) electrical strength of cable accessory silicon rubber reinforced insulation itself is not influenceed；
(3) production technology and simple flow, and course of reaction is stably and controllable.
Brief description of the drawings
Fig. 1 is the illustraton of model of tiny conductive passage in the silicon rubber reinforced insulation material obtained by the inventive method.
Fig. 2-1 and Fig. 2-2 is the cross-section morphology pair for improving the forward and backward obtained silicone rubber insulation material of the inventive method respectively
Compare schematic diagram.
Fig. 3 is the electric field-conductance property contrast schematic diagram for improving the silicone rubber insulation material obtained before and after the inventive method；
Fig. 4-1 to Fig. 4-4 is that the space charge for improving the silicone rubber insulation material obtained before and after the inventive method dissipates special
Property contrast schematic diagram；
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
The method and step of the preparation facilities of the silicon rubber of room for improvement electric charge rapid dispersion is as follows in the present embodiment：
1. 100phr (parts per hundreds of rubber) silicon rubber is weighed using high-precision electronic Libra
Matrix, 20phr nano silicon (SiO2), 5phr HMDS, 1.3phr multi-vinyl silicone oils, 15phr
Micrometer silicon carbide silicon (SiC), double two or five vulcanizing agents of 15phr nanometer silicon carbides (SiC) and 1.0phr, and by above-mentioned silicone rubber matrix and
Filler is placed in 60 DEG C of baking oven and places standby.
2. opening kneading machine roller heating power supply pair roller barrel to be heated, roller temperature is kept to be maintained at 40 DEG C.Regulating roller
Cylinder rotating speed is 30r/min.The distance between roll spacing and baffle plate is adjusted, 100phr raw-silastic continuouslies are put into by driving wheel one end, is mixed
3min is refined, makes the uniform roll banding of rubber；20phr nano silicon (SiO2) and 5phr HMDS are delayed simultaneously
Slow be added in roller makes it be mixed with silicone rubber matrix, continues to knead 10min after it is all added；By many ethene of 1.3phr
Base silicone oil is added in roller, and continuing mixing 10min makes rubber compounding uniform；15phr micrometer silicon carbides silicon (SiC) is slowly added into
Knead in uniform silicon rubber material, continuation mixing 15min to micrometer silicon carbide silicon is fully dispersed uniform in silicon rubber；Will
15phr nanometer silicon carbides (SiC), which are slowly added into, have been kneaded in uniform silicon rubber material, continues to knead 15min to nano silicon carbide
Silicon is fully dispersed uniform in silicon rubber；1phr double two or five vulcanizing agents are added to roller, continuing 10~15min of mixing makes it
Fully dispersed uniform rear clot bottom sheet obtains rubber unvulcanizate in silicon rubber.
3. vulcanizer mold is preheated into 160 DEG C and keeping temperature is constant, takes out rubber unvulcanizate and be positioned over and vulcanize
In machine, after hot pressing 15min under conditions of 10MPa, vulcanization electromechanical source is closed, after taking-up silicon rubber enhancing after mould completely cooling
Insulating materials.
Micrometer silicon carbide silicon grain of the invention by adding 15phr in silicon rubber, and hot-press vulcanization obtains modified
Silicone rubber insulation material.Carborundum has very strong semiconducting character, has by being added in silastic polymer matrix
During 15phr micrometer silicon carbide silicon grain, the tiny conductive passage of material internal is scattered in equivalent to being added in silicone rubber matrix；
In addition, when adding 15phr nano silicon carbide granulate in the material, nano silicon carbide granulate is effectively filled between micron particles
Larger insulation crystal boundary so that crystalline region is distributed more crypto set, and insulation crystal boundary distance is obviously reduced, so that sample is internally formed more
Many is available for the passage that electric charge is transmitted, and its model is as shown in Figure 1.When silicon rubber insulation is because space charge is gathered and is produced local
During electric field distortion, the conductance of the minor insulation increases rapidly, so that quick release space charge and significantly weaken electric field distortion certainly.
Using the cross-section morphology of scanning electronic microscope observation silicone rubber insulation material, as shown in Fig. 2-1 and Fig. 2-2.Can
To find, carborundum particle is dispersed in silicone rubber matrix, and nano silicon carbide granulate is distributed in larger micron carbon
Between silicon carbide particle, original space has been filled up, the ratio shared by silicone rubber matrix in conductive path is reduced.
Using dielectric conductance measuring instrument, measurement improves the electricity of the silicone rubber insulation material obtained before and after the inventive method
Field-conductance property, from Fig. 3 conductance with the situation of change of electric field it can be found that for not improving silicon rubber insulation sample, when applying
Plus compared with existing fringing field (<When 3kV/mm), its conduction current and apply voltage and should obey Ohm's law, it is believed that its electrical conductivity with
The change of electric field and only occur extremely small change；When applying electric field more than 3kV/mm, sample electrical conductivity is due to carborundum
The semiconduction of material and there is non-linear increase.Silicon rubber insulation sample after being improved for method, under existing fringing field, sample
Conductance is in ohmic region, and small change only occurs for conductance, is more or less the same before being improved with method；And when the electric field applied exceedes
During 2.5kV/mm threshold fields, the electrical conductivity of sample has more obvious increase before being improved compared with method.
Obtained before and after improving the inventive method using electroacoustic pulse (PEA) space charge measurement method measurement the most frequently used at present
The space charge dissipation characteristic of the silicone rubber insulation material arrived, 50kV/mm electricity is applied before measurement to above two insulation sample
Field 30min, it can be found that method obtains silicon rubber insulation sample Space-charge amount after improving from Fig. 4-1 and Fig. 4-2
(10s curves in figure) is carved at the beginning of polarization process, and just considerably less than method does not improve obtained silicon rubber insulation.It is further right
The partial enlarged drawing of material anode near zone is it can be found that the silicon rubber obtained for non-improved method before and after ratio method is improved
Material, with the increase of polarization time, negative polarity electric charge is gradually migrated to anode, in anode near zone formation negative polarity electric charge
Accumulation；Meanwhile, the accumulation of negative polarity electric charge also causes anode near zone electric-field enhancing (Fig. 4-3).And to improved method after
Obtained silastic material, in the polarization process incipient stage, anode near zone has a small amount of negative polarity charge buildup so that sun
Extremely nearby internal field is distorted (Fig. 4-4)；Internal field's distortion further increases the conductance for mixing filling sample, so that
Accelerate negative polarity electric charge to migrate to anode and evanishment so that anode near zone space charge accumulation amount is reduced, simultaneously
Electric field distortion degree gradually weakens.In polarization process finish time, space charge accumulation amount is far less than the silicon of non-improved method
Elastomeric material.
The present invention is not limited to embodiments described above.The description to embodiment is intended to describe and said above
Bright technical scheme, above-mentioned embodiment is only schematical, is not restricted.This is not being departed from
In the case of invention objective and scope of the claimed protection, one of ordinary skill in the art may be used also under the enlightenment of the present invention
The specific conversion of many forms is made, these are belonged within protection scope of the present invention.
Claims (3)
1. the preparation facilities of the silicon rubber of room for improvement electric charge rapid dispersion, it is characterised in that including electronics Libra, drying box,
Vulcanizer and the kneading machine being blended for silicone rubber matrix and filler, the kneading machine include roller, heater, rotational speed regulation
Device and timing means.
2. the method for the preparation facilities of the silicon rubber of room for improvement electric charge rapid dispersion according to claim 1, its feature exists
In comprising the following steps：
(1) silicone rubber matrix and filler are weighed by electronics Libra；The filler includes nano silicon, the silicon nitrogen of hexamethyl two
Alkane, multi-vinyl silicone oil, micrometer silicon carbide silicon, nanometer silicon carbide and double two or five vulcanizing agents；
(2) above-mentioned silicone rubber matrix and filler are placed in standby in 60 DEG C of baking oven；
(3) kneading machine roller is heated and roller temperature is maintained at 30-50 DEG C, adjusting roller rotating speed is 20-40r/min；Will
Silicone rubber matrix input roller mixing 2-4min；
(4) nano silicon and HMDS are added in roller simultaneously and mixed with silicone rubber matrix, continue mixed
Refine 8-12min；
(5) multi-vinyl silicone oil is added into roller, continues to knead 8-12min；
(6) micrometer silicon carbide silicon is added into roller, continues to knead 12-18min；
(7) nanometer silicon carbide is added into roller, continues to knead 12-18min；
(8) double two or five vulcanizing agents are added into roller, continues to obtain rubber unvulcanizate after kneading 10-15min；
(9) vulcanizer is preheated to 160 DEG C and keeping temperature is constant, taken out rubber unvulcanizate and be positioned in vulcanizer,
The silicone rubber insulation material acted on space charge rapid dispersion is obtained under conditions of 10MPa after hot pressing 15min.
3. the method for the preparation facilities of the silicon rubber of room for improvement electric charge rapid dispersion according to claim 2, its feature exists
In the silicone rubber matrix, nano silicon, HMDS, multi-vinyl silicone oil, micrometer silicon carbide silicon, nano-sized carbon
SiClx and the proportioning of double two or five vulcanizing agents are：100:20:5:1.3:15:15:1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710174415.4A CN107057355A (en) | 2017-03-22 | 2017-03-22 | The preparation facilities and method of the silicon rubber of room for improvement electric charge rapid dispersion |
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| CN201710174415.4A CN107057355A (en) | 2017-03-22 | 2017-03-22 | The preparation facilities and method of the silicon rubber of room for improvement electric charge rapid dispersion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107033597A (en) * | 2017-03-22 | 2017-08-11 | 天津大学 | The silicone rubber insulation material preparation facilities and method of a kind of space charge rapid dispersion |
| CN108530859A (en) * | 2018-02-20 | 2018-09-14 | 深圳万佳互动科技有限公司 | A kind of preparation method of particle strengthening rubber reinforcement composite material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618740A (en) * | 2011-12-27 | 2012-08-01 | 中国科学院苏州纳米技术与纳米仿生研究所 | Silicon carbide reinforced aluminum-based composite material and its preparation method |
| CN107033597A (en) * | 2017-03-22 | 2017-08-11 | 天津大学 | The silicone rubber insulation material preparation facilities and method of a kind of space charge rapid dispersion |
-
2017
- 2017-03-22 CN CN201710174415.4A patent/CN107057355A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618740A (en) * | 2011-12-27 | 2012-08-01 | 中国科学院苏州纳米技术与纳米仿生研究所 | Silicon carbide reinforced aluminum-based composite material and its preparation method |
| CN107033597A (en) * | 2017-03-22 | 2017-08-11 | 天津大学 | The silicone rubber insulation material preparation facilities and method of a kind of space charge rapid dispersion |
Non-Patent Citations (4)
| Title |
|---|
| B. X. DU等: ""Field-dependent Conductivity and Space Charge Behavior of Silicone Rubber/SiC Composites"", 《IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION》 * |
| 刘柏贤等: "《建筑塑料》", 30 September 2000, 化学工业出版社、材料科学与工程出版中心 * |
| 周文英等: "《导热高分子材料》", 30 April 2014, 国防工业出版社 * |
| 杨卓然等: ""硅橡胶/SiC复合材料非线性电阻及电荷输运特性"", 《中国电机工程学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107033597A (en) * | 2017-03-22 | 2017-08-11 | 天津大学 | The silicone rubber insulation material preparation facilities and method of a kind of space charge rapid dispersion |
| CN108530859A (en) * | 2018-02-20 | 2018-09-14 | 深圳万佳互动科技有限公司 | A kind of preparation method of particle strengthening rubber reinforcement composite material |
| CN108530859B (en) * | 2018-02-20 | 2020-08-11 | 元创科技股份有限公司 | Preparation method of particle reinforced rubber reinforced composite material |
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