CN110330629A - Preparation method of inner core filling material for composite insulating cross arm - Google Patents
Preparation method of inner core filling material for composite insulating cross arm Download PDFInfo
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- CN110330629A CN110330629A CN201910640825.2A CN201910640825A CN110330629A CN 110330629 A CN110330629 A CN 110330629A CN 201910640825 A CN201910640825 A CN 201910640825A CN 110330629 A CN110330629 A CN 110330629A
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- Prior art keywords
- hollow glass
- cross arm
- inner core
- ball
- composite insulation
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- 239000000463 material Substances 0.000 title claims abstract description 87
- 239000002131 composite material Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000011521 glass Substances 0.000 claims abstract description 80
- 239000007822 coupling agent Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000007787 solid Substances 0.000 claims abstract description 19
- 239000002904 solvent Substances 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000011806 microball Substances 0.000 claims description 54
- 238000009413 insulation Methods 0.000 claims description 53
- 238000012856 packing Methods 0.000 claims description 38
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 11
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 8
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 6
- 235000019441 ethanol Nutrition 0.000 claims description 6
- 238000004513 sizing Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 229940113115 polyethylene glycol 200 Drugs 0.000 claims description 4
- 229920001451 polypropylene glycol Polymers 0.000 claims description 4
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical group CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 3
- XAAILNNJDMIMON-UHFFFAOYSA-N 2'-anilino-6'-(dibutylamino)-3'-methylspiro[2-benzofuran-3,9'-xanthene]-1-one Chemical group C=1C(N(CCCC)CCCC)=CC=C(C2(C3=CC=CC=C3C(=O)O2)C2=C3)C=1OC2=CC(C)=C3NC1=CC=CC=C1 XAAILNNJDMIMON-UHFFFAOYSA-N 0.000 claims description 3
- LVNLBBGBASVLLI-UHFFFAOYSA-N 3-triethoxysilylpropylurea Chemical compound CCO[Si](OCC)(OCC)CCCNC(N)=O LVNLBBGBASVLLI-UHFFFAOYSA-N 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims 1
- ARYZCSRUUPFYMY-UHFFFAOYSA-N methoxysilane Chemical compound CO[SiH3] ARYZCSRUUPFYMY-UHFFFAOYSA-N 0.000 claims 1
- 239000004005 microsphere Substances 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract 1
- 229920002635 polyurethane Polymers 0.000 description 18
- 239000004814 polyurethane Substances 0.000 description 18
- 238000009792 diffusion process Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 7
- 229920005830 Polyurethane Foam Polymers 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000011496 polyurethane foam Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- -1 poly- ammonia Ester Chemical class 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 206010000269 abscess Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- PFWRHNFNTNMKPC-UHFFFAOYSA-N 4-trimethoxysilylbutan-2-yl prop-2-enoate Chemical compound CO[Si](OC)(OC)CCC(C)OC(=O)C=C PFWRHNFNTNMKPC-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001595 contractor effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
-
- 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
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a preparation method of an inner core filling material for a composite insulating cross arm, and belongs to the technical field of preparation of the inner core filling material for the composite insulating cross arm. The method comprises the following steps: a. generating hollow glass microspheres with-OH attached to the surfaces and solid NaoH; b. obtaining the hollow glass microspheres with-OH attached to the surfaces in a wet state; c. generating hollow glass microspheres with-OH attached to the surfaces; d. obtaining hollow glass microsphere particles with-OH attached to the surfaces; e. forming a coupling agent solvent; f. forming organophilic hollow glass microspheres; g. obtaining the raw material of the inner core filling material of the composite insulating cross arm; h. and preparing the inner core filling material for the composite insulating cross arm. It has the features of low pore merging and through hole rate, high closed hole rate and low water absorption.
Description
Technical field
The present invention relates to composite insulation cross arm inner core packing material preparation technical fields.
Background technique
Currently, China's transmission line of electricity is all to continue to use traditional steel tower, steel pipe pole, concrete frame configuration steel cross-arm, suspension
The form of insulator chain is run.But the insulation distance and creepage distance of steel cross-arm are shorter, in order to meet parameter request, to steel tower
Height and cross-arm length also proposed high requirement.Therefore, start using emerging composite insulation cross arm.
Composite insulation cross arm is by silicon rubber umbrella skirt, sheath, plug, inner core composition.Polyurethane inner core uses polyurethane foam
Material, now widely used is free foaming, and isocyanates (black material) and polyalcohol (white material) prepare polyurethane foam
Two kinds of components, adjust the different proportion of the white material of black material, start to foam after being mixed into mold.It is liquid under black material and white material room temperature
State, convenient for processing.For polyurethane material performance itself, polyurethane foam after molding has both the spy of solid and hollow material
Point, density is low and insulation performance is preferable, but has a problem in that it is that internal porosity arrangement is uneven first, rate of closed hole and stomata
Size can influence internal field strength after having moisture penetration, cause the reduction of polyurethane breakdown voltage；Secondly, different component polyurethane sheet
Body material property parameter, which tests dyestuff penetration, and water diffusion experiment exists influences.The size of polyurethane stomata, unevenness with
And arrangement mode can generate large effect to dielectric properties, in foaming process, it is swollen that different proportion A, B material meets water fever temperature rise
Swollen generation vesicle squeezes inner wall, forms spontaneous adhesive layer and generates interface, and after a period of time of foaming, temperature decline causes entirety
Material shrinkage, due to thermal expansion and cold contraction effect generate stress also can pair and interface have an impact.
In long-term actual motion, polyurethane inner core is unavoidably influenced by complex environment factor, however pure poly- ammonia
Ester rigid foam material has very strong water imbibition, exists simultaneously the poor problem of weatherability.Moisture presence can reduce polyurethane foam
Breakdown strength, cause its leakage current improve, greatly reduce its insulation characterisitic.
In actual use, required for often increasing respective material in polyurethane or changing corresponding formula to obtain
Polyurethane material.The wider filler of application is mainly glass-fiber-fabric, chopped glass fiber and glass microballoon, organic microbead etc. at present.With
The Material reinforcements hard polyaminoester plastics such as glass fibre, although its intensity improves a lot, density is also increased with it, and is not inconsistent
Close compound cross-arm filler material requirement.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of preparations of inner core packing material for composite insulation cross arm
Method, it is low with simultaneously hole and through-hole rate, rate of closed hole is high, the low feature of water absorption rate.
In order to solve the above technical problems, the technical solution used in the present invention is:
A kind of preparation method of the inner core packing material for composite insulation cross arm, comprising the following steps:
A. weigh 50~150 parts by weight hollow glass micro-ball be added 0.5~2mol/L NaoH solution in stirring 2h with
On, it is dried later, generates hollow glass micro-ball and solid state N aoH that surface has-OH；
B. the hollow glass micro-ball by surface prepared by step a with-OH and solid state N aoH are cleaned by distilled water, with
Solid state N aoH therein is removed, the surface for obtaining hygrometric state has the hollow glass micro-ball of-OH；
C. hollow glass micro-ball of the surface of hygrometric state prepared by step b with-OH is placed in vacuum environment at dry
Reason generates the hollow glass micro-ball that surface has-OH；
D. the hollow glass micro-ball by surface prepared in step c with-OH carries out filter coarse sizing processing, cross 80~
120 meshes obtain the hollow glass micro-ball particle that surface has-OH；
E. it weighs its ph value tune by weight after 20~70 parts of 20~70 parts of ethyl alcohol, water of mass concentration >=98% mixing
Whole is 3~5, forms coupling agent solvent；
F. weigh by weight 5~20 parts of coupling agent, surface with-OH 100~200 parts of hollow glass micro-ball particle,
It prepared 1500~2000 parts of coupling agent solvent in step e, mixes and is heated to 60~100 DEG C, stir 2h or more, shape
It gets married the hollow glass micropearl of organic group；
G. 100~200 parts by weight of hollow glass micropearl, the white material 1000 of organic-philic group prepared in step f are weighed
~2000 parts by weight, black 400~800 parts by weight of material, white material are polyethylene glycol 200 or polypropylene glycol 400, and black material is diphenylmethyl
Alkane diisocyanate stirs 1~3min in the case where revolving speed is 1000~1800r/min after mixing above-mentioned raw materials, obtains compound exhausted
The inner core packing material raw material of edge cross-arm；
H., the inner core packing material raw material of composite insulation cross arm prepared in step g is filled in the compound inslation of preheating
In cross-arm mold, solidifies at 90~120 DEG C 8 hours or more, take out curing molding from composite insulation cross arm mold later
Product obtains the inner core packing material for composite insulation cross arm.
The present invention further improvement lies in that:
In step a, temperature when being dried is 85~100 DEG C.
In step c, temperature when being dried in vacuum environment is 25~40 DEG C.
In step e, the ph value of coupling agent solvent is adjusted by acetic acid.
In step f, coupling agent is gamma-aminopropyl-triethoxy-silane, γ-(2,3- the third oxygen of epoxy) propyl trimethoxy
One of silane, γ monomethyl acryloyloxypropyltrimethoxysilane, 3- ureidopropyltriethoxysilane.
In step a, hollow glass micro-ball physical parameter are as follows: radius be 10~180um, bulk density be 0.1~
0.25g/cm3。
The beneficial effects of adopting the technical scheme are that
Glass microballoon has many advantages, such as light, low thermally conductive, the high and good chemical stability of intensity, by specially treated,
With oleophylic, hydrophobicity performance, it is very easy to be scattered in the organic materials such as resin.It has enough resistance to compressions, it is heat-resisting, anticorrosive with
And excellent electrical insulating property, there is good thermal stability and electric property.Secondly, the isotropism of glass microballoon is without preferentially
Orientation, and and thermoplasticity, thermosetting high polymers have good intermiscibility, can be used kinds of processes pressing mold molding, be a kind of reason
The material thought.Therefore preferable selection is the polyurethane filler material added after modified glass microspheres.
Therefore, material modification is carried out to obtain the object for adapting to composite insulation cross arm actual motion condition to polyurethane material
Reason/electrology characteristic is of great significance.It is expected to reduce its water absorption rate and leakage current values by improving polyurethane material, improve poly-
The operational reliability of the compound cross-arm of urethane filled-type.
It can largely reduce water absorption rate, to improve its corrosion-resistant, anti-aging property, be improved absolutely with reaching
The purpose of edge distance and creepage distance.
Detailed description of the invention
Fig. 1 is the water-diffusion test curve graph of used composite insulation cross arm polyurethane inner core at present；
Fig. 2 is the water-diffusion test curve graph of the inner core packing material of composite insulation cross arm obtained in embodiment 2；
Fig. 3 be composite insulation cross arm obtained in embodiment 1 inner core packing material scanning electron microscope under photo；
Fig. 4 be composite insulation cross arm obtained in embodiment 3 inner core packing material scanning electron microscope under photo；
Fig. 5 is photo under current used composite insulation cross arm polyurethane inner core packing material scanning electron microscope.
Specific embodiment
The present invention is further described through combined with specific embodiments below, but specific embodiment does not appoint the present invention
What is limited.
Embodiment 1
A kind of preparation method of the inner core packing material for composite insulation cross arm, comprising the following steps:
A. weigh 50 parts by weight hollow glass micro-ball (radius be 10~180um, bulk density be 0.1~
It 0.25g/cm3) is added in the NaoH solution of 0.5mol/L and stirs 2h or more, it is dried under 85 DEG C of environment temperatures later
Processing generates hollow glass micro-ball and solid state N aoH that surface has-OH；
B. the hollow glass micro-ball by surface prepared by step a with-OH and solid state N aoH are cleaned by distilled water, with
Solid state N aoH therein is removed, the surface for obtaining hygrometric state has the hollow glass micro-ball of-OH；
C. the hollow glass micro-ball by the surface of hygrometric state prepared by step b with-OH is placed in 25~40 in vacuum environment
It is dried under DEG C environment temperature, generates the hollow glass micro-ball that surface has-OH；
D. the hollow glass micro-ball by surface prepared in step c with-OH carries out filter coarse sizing processing, cross 80~
120 meshes obtain the hollow glass micro-ball particle that surface has-OH；
E. after weighing 20 parts of 20 parts of ethyl alcohol, water of mass concentration >=98% mixing by weight, by acetic acid by its ph value
3 are adjusted to, coupling agent solvent is formed；
F. 5 parts of coupling agent (gamma-aminopropyl-triethoxy-silane) is weighed by weight, surface has the hollow glass of-OH
Prepared 1500 parts of coupling agent solvent in 100 parts of microballoon particle, step e, mix and be heated to 60 DEG C, stir 2h with
On, form the hollow glass micropearl of organic-philic group；
G. 100 parts by weight of hollow glass micropearl, 1000 weight of white material of organic-philic group prepared in step f are weighed
Part, black 400 parts by weight of material, white material is polyethylene glycol 200, and black material is methyl diphenylene diisocyanate, and above-mentioned raw materials are mixed
1min is stirred in the case where revolving speed is 1000r/min afterwards, obtains the inner core packing material raw material of composite insulation cross arm；
H., the inner core packing material raw material of composite insulation cross arm prepared in step g is filled in the compound inslation of preheating
In cross-arm mold, solidifies at 90 DEG C 8 hours or more, takes out the product of curing molding from composite insulation cross arm mold later,
Obtain the inner core packing material for composite insulation cross arm.
Table 1 is the water-diffusion test data form of the present embodiment 1
| The boiling time | Rate of pressure rise | Sample state | Maximum pressurization | Maximum leakage electric current |
| 96h | 1kV/s | Breakdown | 1.2kV | 120mA |
Embodiment 2
A kind of preparation method of the inner core packing material for composite insulation cross arm, comprising the following steps:
A. weigh 100 parts by weight hollow glass micro-ball (radius be 10~180um, bulk density be 0.1~
It 0.25g/cm3) is added in the NaoH solution of 1.2mol/L and stirs 2h or more, it is dried under 90 DEG C of environment temperatures later
Processing generates hollow glass micro-ball and solid state N aoH that surface has-OH；
B. the hollow glass micro-ball by surface prepared by step a with-OH and solid state N aoH are cleaned by distilled water, with
Solid state N aoH therein is removed, the surface for obtaining hygrometric state has the hollow glass micro-ball of-OH；
C. the hollow glass micro-ball by the surface of hygrometric state prepared by step b with-OH is placed in 30 DEG C of rings in vacuum environment
It is dried at a temperature of border, generates the hollow glass micro-ball that surface has-OH；
D. the hollow glass micro-ball by surface prepared in step c with-OH carries out filter coarse sizing processing, crosses 100 mesh
Sieve obtains the hollow glass micro-ball particle that surface has-OH；
E. after weighing 65 parts of 48 parts of ethyl alcohol, water of mass concentration >=98% mixing by weight, by acetic acid by its ph value
4 are adjusted to, coupling agent solvent is formed；
F. weigh by weight 12 parts of coupling agent (γ-(2,3- the third oxygen of epoxy) propyl trimethoxy silicane), surface with-
Prepared 1800 parts of coupling agent solvent in 150 parts of the hollow glass micro-ball particle of OH, step e, mixes and be heated to 80
DEG C, 2h or more is stirred, the hollow glass micropearl of organic-philic group is formed；
G. 150 parts by weight of hollow glass micropearl, 1500 weight of white material of organic-philic group prepared in step f are weighed
Part, black 600 parts by weight of material, white material is polypropylene glycol 400, and black material is methyl diphenylene diisocyanate, and above-mentioned raw materials are mixed
2min is stirred in the case where revolving speed is 1400r/min afterwards, obtains the inner core packing material raw material of composite insulation cross arm；
H., the inner core packing material raw material of composite insulation cross arm prepared in step g is filled in the compound inslation of preheating
In cross-arm mold, solidifies at 1000 DEG C 8 hours or more, take out the production of curing molding from composite insulation cross arm mold later
Product obtain the inner core packing material for composite insulation cross arm.
Table 2 is the water-diffusion test data form of the present embodiment 2
| The boiling time | Rate of pressure rise | Sample state | Maximum pressurization | Maximum leakage electric current |
| 96h | 1kV/s | Breakdown | 2.2kV | 246mA |
Embodiment 3
A kind of preparation method of the inner core packing material for composite insulation cross arm, comprising the following steps:
A. weigh 140 parts by weight hollow glass micro-ball (radius be 10~180um, bulk density be 0.1~
It 0.25g/cm3) is added in the NaoH solution of 2mol/L and stirs 2h or more, it is dried under 100 DEG C of environment temperatures later
Processing generates hollow glass micro-ball and solid state N aoH that surface has-OH；
B. the hollow glass micro-ball by surface prepared by step a with-OH and solid state N aoH are cleaned by distilled water, with
Solid state N aoH therein is removed, the surface for obtaining hygrometric state has the hollow glass micro-ball of-OH；
C. the hollow glass micro-ball by the surface of hygrometric state prepared by step b with-OH is placed in 40 DEG C of rings in vacuum environment
It is dried at a temperature of border, generates the hollow glass micro-ball that surface has-OH；
D. the hollow glass micro-ball by surface prepared in step c with-OH carries out filter coarse sizing processing, crosses 120 mesh
Sieve obtains the hollow glass micro-ball particle that surface has-OH；
E. after weighing 80 parts of 70 parts of ethyl alcohol, water of mass concentration >=98% mixing by weight, by acetic acid by its ph value
5 are adjusted to, coupling agent solvent is formed；
F. weigh by weight 20 parts of coupling agent (γ-methacryloxypropyl trimethoxy silane), surface with-
Prepared 2000 parts of coupling agent solvent in 200 parts of the hollow glass micro-ball particle of OH, step e, mixes and be heated to 100
DEG C, 2h or more is stirred, the hollow glass micropearl of organic-philic group is formed；
G. 200 parts by weight of hollow glass micropearl, 2000 weight of white material of organic-philic group prepared in step f are weighed
Part, black 800 parts by weight of material, white material is polyethylene glycol 200, and black material is methyl diphenylene diisocyanate, and above-mentioned raw materials are mixed
3min is stirred in the case where revolving speed is 1800r/min afterwards, obtains the inner core packing material raw material of composite insulation cross arm；
H., the inner core packing material raw material of composite insulation cross arm prepared in step g is filled in the compound inslation of preheating
In cross-arm mold, solidifies at 110 DEG C 8 hours or more, takes out the product of curing molding from composite insulation cross arm mold later,
Obtain the inner core packing material for composite insulation cross arm.
Table 3 is the water-diffusion test data form of the present embodiment 3
| The boiling time | Rate of pressure rise | Sample state | Maximum pressurization | Maximum leakage electric current |
| 96h | 1kV/s | Breakdown | 2.7kV | 520mA |
Embodiment 4
A kind of preparation method of the inner core packing material for composite insulation cross arm, comprising the following steps:
A. weigh 140 parts by weight hollow glass micro-ball (radius be 10~180um, bulk density be 0.1~
It 0.25g/cm3) is added in the NaoH solution of 1.8mol/L and stirs 2h or more, it is dried under 90 DEG C of environment temperatures later
Processing generates hollow glass micro-ball and solid state N aoH that surface has-OH；
B. the hollow glass micro-ball by surface prepared by step a with-OH and solid state N aoH are cleaned by distilled water, with
Solid state N aoH therein is removed, the surface for obtaining hygrometric state has the hollow glass micro-ball of-OH；
C. the hollow glass micro-ball by the surface of hygrometric state prepared by step b with-OH is placed in 45 DEG C of rings in vacuum environment
It is dried at a temperature of border, generates the hollow glass micro-ball that surface has-OH；
D. the hollow glass micro-ball by surface prepared in step c with-OH carries out filter coarse sizing processing, crosses 120 mesh
Sieve obtains the hollow glass micro-ball particle that surface has-OH；
E. after weighing 70 parts of 50 parts of ethyl alcohol, water of mass concentration >=98% mixing by weight, by acetic acid by its ph value
4 are adjusted to, coupling agent solvent is formed；
F. 18 parts of coupling agent (3- ureidopropyltriethoxysilane) is weighed by weight, surface has the hollow glass of-OH
Prepared 1800 parts of coupling agent solvent in 180 parts of glass microballoon particle, step e, mix and be heated to 90 DEG C, stir 2h with
On, form the hollow glass micropearl of organic-philic group；
G. 190 parts by weight of hollow glass micropearl, 1900 weight of white material of organic-philic group prepared in step f are weighed
Part, black 700 parts by weight of material, white material is polypropylene glycol 400, and black material is methyl diphenylene diisocyanate, and above-mentioned raw materials are mixed
4min is stirred in the case where revolving speed is 1600r/min afterwards, obtains the inner core packing material raw material of composite insulation cross arm；
H., the inner core packing material raw material of composite insulation cross arm prepared in step g is filled in the compound inslation of preheating
In cross-arm mold, solidifies at 110 DEG C 8 hours or more, takes out the product of curing molding from composite insulation cross arm mold later,
Obtain the inner core packing material for composite insulation cross arm.
Table 4 is the water-diffusion test data form of the present embodiment 4
| The boiling time | Rate of pressure rise | Sample state | Maximum pressurization | Maximum leakage electric current |
| 96h | 1kV/s | Breakdown | 2.9kV | 220mA |
The water-diffusion test (referring to Fig. 1) of composite insulation cross arm polyurethane inner core used at present, after the 1kv that pressurizes
Leakage Current has been approached 80000uA in the case of when 20s, and Leakage Current is larger, the pure polyurethane insulating ability after water is spread
It is poor, easily puncture.
The water-diffusion test (referring to fig. 2) of the inner core packing material of composite insulation cross arm obtained in embodiment 2, will be electric
Pressure is added to 3KV, and Leakage Current is still not up to 30000uA in the case of the nearly 110s that pressurizes.Fig. 1 Fig. 2 is compared it is found that adding modified glass
Polyurethane breakdown field strength improves 3 times than pure polyurethane after glass microballon, and insulation performance obtains larger raising.
Composite insulation cross arm polyurethane inner core packing material used at present (referring to Fig. 5), it can be seen that Air Bubble Size
About 200um, being grown up due to the forming core of bubble in foaming process makes the surface tension of cell wall resin melt there are the effects of stress
Difference is produced with matrix resin, gap presence is had between Kong Pao and hole bubble, it can be seen that arrangement is not very tight between abscess
It is close.Insulating materials outdoors military service work when, the invasion of wind and rain can be often subject to, and the water absorption rate of conventional polyurethane foams is also not
It is sufficient for that is required to can see by Fig. 3 Fig. 4, microballon passes through modified addition, and expansion is so that microballoon and microballoon, microballoon and tree
Aliphatic radical body fits closely, and from microgram it can be seen that microballoon shape is complete, does not almost find fault location, gap is obviously contracted between abscess
Much smaller, shape also becomes rule, without simultaneously hole and through-hole phenomenon.
Claims (6)
1. a kind of preparation method of the inner core packing material for composite insulation cross arm, it is characterised in that: the method includes with
Lower step:
A. the hollow glass micro-ball for weighing 50~150 parts by weight, which is added in the NaoH solution of 0.5~2mol/L, stirs 2h or more, it
It is dried afterwards, generates hollow glass micro-ball and solid state N aoH that surface has-OH；
B. the hollow glass micro-ball by surface prepared by step a with-OH and solid state N aoH are cleaned by distilled water, with removal
Solid state N aoH therein, the surface for obtaining hygrometric state have the hollow glass micro-ball of-OH；
C. the hollow glass micro-ball by the surface of hygrometric state prepared by step b with-OH, which is placed in vacuum environment, is dried, raw
Has the hollow glass micro-ball of-OH at surface；
D. the hollow glass micro-ball by surface prepared in step c with-OH carries out filter coarse sizing processing, crosses 80~120 mesh
Sieve obtains the hollow glass micro-ball particle that surface has-OH；
E. its ph value is adjusted to after weighing 20~70 parts of 20~70 parts of ethyl alcohol, water mixing of mass concentration >=98% by weight
3~5, form coupling agent solvent；
F. 5~20 parts of coupling agent is weighed by weight, surface has 100~200 parts of the hollow glass micro-ball particle of-OH, step e
In prepared 1500~2000 parts of coupling agent solvent mix and be heated to 60~100 DEG C, stir 2h or more, forming parent has
The hollow glass micropearl of machine group；
G. weigh in step f 100~200 parts by weight of hollow glass micropearl of prepared organic-philic group, white material 1000~
2000 parts by weight, black 400~800 parts by weight of material, the white material are polyethylene glycol 200 or polypropylene glycol 400, and the black material is two
Methylenebis phenyl isocyanate stirs 1~3min in the case where revolving speed is 1000~1800r/min after mixing above-mentioned raw materials, obtains
The inner core packing material raw material of composite insulation cross arm；
H., the inner core packing material raw material of composite insulation cross arm prepared in step g is filled in the composite insulation cross arm of preheating
In mold, solidifies at 90~120 DEG C 8 hours or more, takes out the product of curing molding from composite insulation cross arm mold later,
Obtain the inner core packing material for composite insulation cross arm.
2. a kind of preparation method of inner core packing material for composite insulation cross arm according to claim 1, feature
Be: in the step a, temperature when being dried is 85~100 DEG C.
3. a kind of preparation method of inner core packing material for composite insulation cross arm according to claim 2, feature
Be: in the step c, temperature when being dried in vacuum environment is 25~40 DEG C.
4. a kind of preparation method of inner core packing material for composite insulation cross arm according to claim 3, feature
Be: in the step e, the ph value of coupling agent solvent is adjusted by acetic acid.
5. a kind of preparation method of inner core packing material for composite insulation cross arm according to claim 4, feature
Be: in the step f, the coupling agent is gamma-aminopropyl-triethoxy-silane, γ-(2,3- the third oxygen of epoxy) propyl three
One of methoxy silane, γ-methacryloxypropyl trimethoxy silane, 3- ureidopropyltriethoxysilane.
6. a kind of preparation method of inner core packing material for composite insulation cross arm according to claim 4, feature
Be: in the step a, hollow glass micro-ball physical parameter are as follows: radius be 10~180um, bulk density be 0.1~
0.25g/cm3。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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