CN110330631A - 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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- CN110330631A CN110330631A CN201910641705.4A CN201910641705A CN110330631A CN 110330631 A CN110330631 A CN 110330631A CN 201910641705 A CN201910641705 A CN 201910641705A CN 110330631 A CN110330631 A CN 110330631A
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- cross arm
- composite insulation
- inner core
- insulation cross
- weight
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- 239000000463 material Substances 0.000 title claims abstract description 64
- 239000002131 composite material Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims description 41
- -1 phenolic aldehyde Chemical class 0.000 claims description 22
- 238000012856 packing Methods 0.000 claims description 14
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000004005 microsphere Substances 0.000 claims description 11
- 229920001568 phenolic resin Polymers 0.000 claims description 11
- 239000005011 phenolic resin Substances 0.000 claims description 11
- 239000011324 bead Substances 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 6
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 6
- 238000007667 floating Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 4
- 229940113115 polyethylene glycol 200 Drugs 0.000 claims description 4
- GTEXIOINCJRBIO-UHFFFAOYSA-N 2-[2-(dimethylamino)ethoxy]-n,n-dimethylethanamine Chemical compound CN(C)CCOCCN(C)C GTEXIOINCJRBIO-UHFFFAOYSA-N 0.000 claims description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims description 3
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 239000011810 insulating material Substances 0.000 abstract description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011325 microbead Substances 0.000 abstract 2
- 230000032683 aging Effects 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 238000009736 wetting Methods 0.000 abstract 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 9
- 229920002635 polyurethane Polymers 0.000 description 9
- 239000004814 polyurethane Substances 0.000 description 9
- 239000011496 polyurethane foam Substances 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 206010000269 abscess Diseases 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 239000012212 insulator Substances 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 230000003712 anti-aging effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 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
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001595 contractor effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000012545 processing Methods 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
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000000725 suspension Substances 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/22—Expandable microspheres, e.g. Expancel®
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a preparation method of an inner core filling material for a composite insulating cross arm, which comprises the following steps: a. preparing a hollow phenolic microbead wetting mixture; b. cleaning the composite insulating cross arm mould, and uniformly spraying a release agent; c. preheating the composite insulating cross arm mould sprayed with the release agent; d. preparing a hollow phenolic microbead mixture; e. and preparing the inner core filling material for the composite insulating cross arm. The insulating material can reduce the water absorption rate to a great extent, thereby improving the corrosion resistance and the ageing resistance of the insulating material, and achieving the purpose of improving the insulating distance and the creepage distance.
Description
Technical field
The present invention relates to composite insulation cross arm inner core packing material preparation technical fields.
Background technique
With the raising of China's electric power network technique level, transmission line of electricity present long range, scale, enlargement development become
Gesture.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 insulator
The form of string is run.In order to meet the needs of corresponding insulation distance and creepage distance, steel cross-arm must configure very long exhausted
Edge substring often occurs the windage yaw discharge because of caused by conductor galloping under the bad weathers such as strong wind, sleet, lightning flash over, covers
The failures such as ice flashover, pollution flashover seriously threaten the safe operation of transmission line of electricity.Transmission line of electricity voltage class is higher, therewith
Corresponding insulator chain is also longer, certainly will increase the height of steel tower in this way, increases steel tower rolled steel dosage, gives power transmission line
The day-to-day operation on road and service work increase workload.Meanwhile in order to avoid causing to trip because of conductor galloping, it is necessary to increase
Wire spacing certainly will increase the occupied area in transmission of electricity corridor, in the case where current land resource is in short supply, to the throwing of transmission line of electricity
Money construction brings no small trouble.Therefore, finding novel, environmentally friendly light material and replacing traditional steel is to solve the above problems
An approach.
Composite insulation cross arm is a kind of cross-arm of new material, and small in size, light weight, high mechanical strength, electric property are excellent
More.It has insulation that is corrosion-resistant, anti-aging, reducing line upkeep cost, reduce transport and assemble cost, improve distribution line
The advantages that horizontal, has well solved the small problem of reserved width of corridor.Current compound cross-arm is in fast-developing in China at present
Trend, future are with a wide range of applications.
Composite insulation cross arm is by silicon rubber umbrella skirt, sheath, plug, inner core composition.Polyurethane inner core has light weight, insulation
Intensity is good, and foam simple advantage, is applied to insulator crossarm interior insulation.Now widely used polyurethane foamed material is freely
Foaming, isocyanates (black material) and polyalcohol (white material) are two kinds of components for preparing polyurethane foam, adjust the white material of black material not
In proportion, start to foam after being mixed into mold.It is liquid under black material and white material room temperature, convenient for processing.To polyurethane material
For performance itself, the characteristics of polyurethane foam after molding has both solid and hollow material, density is low and insulation performance is preferable,
But have a problem in that it is that internal porosity arrangement is uneven first, rate of closed hole and pore opening can influence after having moisture penetration
Internal field strength causes the reduction of polyurethane breakdown voltage；Secondly, different component polyurethane body material property parameter is to dyestuff penetration
There is influence in experiment and water diffusion experiment.The size of polyurethane stomata, unevenness and arrangement mode can to dielectric properties
Large effect is generated, in foaming process, different proportion A, B material, which meets water fever temperature rise and generates vesicle, squeezes inner wall, is formed spontaneous
Adhesive layer and generate interface, after a period of time of foaming, temperature decline causes integral material to shrink, due to thermal expansion and cold contraction effect produce
Raw 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.
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 can largely reduce water absorption rate, to improve its corrosion-resistant, anti-aging property, improve insulation to reach
The purpose of distance and creepage distance.
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, method the following steps are included:
A. 2.8~7.7 parts by weight of phenolic resin microspheres, 25~75 parts by weight of white material are weighed；After above-mentioned raw materials are mixed
Revolving speed is that 1~3min is stirred under 1000~1800r/min, obtains hollow phenolic aldehyde microballon wet mix；White material is polyethylene glycol
200 or polypropylene glycol 400；
B. by composite insulation cross arm mold clean it is clean after, even application release agent；
C. the composite insulation cross arm mold of spray coated release agent is preheated；
D. the hollow phenolic aldehyde microballon wet mix obtained in the catalyst and step a of 10~200 parts by weight is weighed；It obtains
Hollow phenolic aldehyde bead mixture, catalyst are triethylene diamine, dimethylaminoethyl ether, stannous octoate, pentamethyl divinyl three
One of amine；
E. the black material for weighing 25~75 parts by weight mixes the hollow phenolic aldehyde bead mixture obtained in black material and step d
Together, and in the case where revolving speed is 1000~1800r/min 1~2min is stirred, the compound inslation of preheating is filled in after stirring
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, and black material is methyl diphenylene diisocyanate.
The present invention further improvement lies in that:
Phenolic resin microspheres physical parameter are as follows: 60~120 μm of partial size；95% or more purity；Apparent density 0.05~
0.15g/cm3；Floating ball rate is greater than 92.9%；0.150~0.355g/cm3 of density；1~5 μm of wall thickness.
The beneficial effects of adopting the technical scheme are that
Conventional urethane foamed material releases gas by internal isocyanate and polyol reaction, generates air entrapment,
Ideal polyurethane foamed material should be that the sphere heap that contacts with each other of complete closed pore blocks up, and practical polyurethane foam SEM figure is such as
Shown in Fig. 1, the Air Bubble Size about 200um, and it is uncontrollable due to reacting, it grows up to exist due to the forming core of bubble in foaming process and answer
The effects of power, makes the surface tension of cell wall resin melt and matrix resin produces difference, causes between abscess that there are gaps, such as
Figure is it can be seen that between abscess it can be seen that apparent gap, abscess and the practical not compact reactor of abscess are stifled；Abscess mutual extrusion, shape
Shape variation tends to be irregular, and simultaneously hole and through-hole occurs.In the long-term outdoor operation of insulating materials, inevitably by moisture etc.
The influence of extraneous factor intrusion, water absorption rate can not composite demand on long terms for traditional blown rigid polyurethane foamed material.
Compared with traditional foamed material, phenolic aldehyde microballoon be added directly into and carry out it is expanded foamed, due to phenolic resin
Microsphere surface largely contains phenolic hydroxyl group, to polyurethane resin matrix have good compatibility so that in matrix micro interface and
Gap is functional, and microballoon have elasticity, do not allow in the techniques such as mechanical stirring it is easily broken, can from microscopic appearance Fig. 2
Out, microballoon shape is complete and consistency is good, without microdefects such as the gap, the breakages that occur in comparative example, does not also have between abscess
There is obvious formation gap, abscess and abscess compact reactor are stifled；Foam structure variation tends to rule, does not occur simultaneously hole and through-hole.
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 shone under the polyurethane foam material electron microscope that currently used composite insulation cross arm inner core is filled
Piece；
Fig. 2 is photo under the polyurethane foam material electron microscope made according to embodiment 2；
Fig. 3 is the water-diffusion test leakage current curves figure for the polyurethane foam material made according to embodiment 1；
Fig. 4 is the water-diffusion test leakage current curves figure for the polyurethane foam material made according to embodiment 2；
Fig. 5 is the water-diffusion test leakage current curves figure for the polyurethane foam material made according to embodiment 3；
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.
Case study on implementation 1
A kind of preparation method of the inner core packing material for composite insulation cross arm, method the following steps are included:
A. 2.8 parts by weight of phenolic resin microspheres, 25 parts by weight of white material are weighed；It is in revolving speed after above-mentioned raw materials are mixed
1min is stirred under 1000r/min, obtains hollow phenolic aldehyde microballon wet mix；White material is polyethylene glycol 200；
B. by composite insulation cross arm mold clean it is clean after, even application release agent；
C. the composite insulation cross arm mold of spray coated release agent is preheated for 24 hours at 90 DEG C；
D. the hollow phenolic aldehyde microballon wet mix obtained in the catalyst and step a of 10 parts by weight is weighed；It obtains hollow
Phenolic aldehyde bead mixture, catalyst are triethylene diamine；
The hollow phenolic aldehyde bead mixture obtained in black material and step d is blended in one by the black material for e. weighing 25 parts by weight
It rises, and stirs 1min in the case where revolving speed is 1000r/min, be filled in after stirring in the composite insulation cross arm mold of preheating,
Solidify at 90 DEG C 8 hours or more, takes out the product of curing molding from composite insulation cross arm mold later, obtain for compound
The inner core packing material of insulator crossarm, black material are methyl diphenylene diisocyanate.
Phenolic resin microspheres physical parameter are as follows: 60 μm of partial size；Purity 95%；Apparent density 0.05g/cm3；Floating ball rate is greater than
92.9%；Density 0.150g/cm3；1 μm of wall thickness.
Embodiment 2
A kind of preparation method of the inner core packing material for composite insulation cross arm, method the following steps are included:
A. 5.7 parts by weight of phenolic resin microspheres, 45 parts by weight of white material are weighed；It is in revolving speed after above-mentioned raw materials are mixed
1min is stirred under 1400r/min, obtains hollow phenolic aldehyde microballon wet mix；White material is polyethylene glycol 200；
B. by composite insulation cross arm mold clean it is clean after, even application release agent；
C. the composite insulation cross arm mold of spray coated release agent is preheated for 24 hours at 100 DEG C；
D. the hollow phenolic aldehyde microballon wet mix obtained in the catalyst and step a of 100 parts by weight is weighed；It obtains hollow
Phenolic aldehyde bead mixture, catalyst are dimethylaminoethyl ether；
The hollow phenolic aldehyde bead mixture obtained in black material and step d is blended in one by the black material for e. weighing 55 parts by weight
It rises, and stirs 1.5min in the case where revolving speed is 1400r/min, be filled in after stirring in the composite insulation cross arm mold of preheating,
Solidify at 100 DEG C 8 hours or more, takes out the product of curing molding from composite insulation cross arm mold later, obtain and be used for
The inner core packing material of composite insulation cross arm, black material are methyl diphenylene diisocyanate.
Phenolic resin microspheres physical parameter are as follows: 80 μm of partial size；97% or more purity；Apparent density 0.10g/cm3；Floating ball rate
Greater than 92.9%；Density 0.255g/cm3；4 μm of wall thickness.
Embodiment 3
A kind of preparation method of the inner core packing material for composite insulation cross arm, method the following steps are included:
A. 7.7 parts by weight of phenolic resin microspheres, 75 parts by weight of white material are weighed；It is in revolving speed after above-mentioned raw materials are mixed
3min is stirred under 1800r/min, obtains hollow phenolic aldehyde microballon wet mix；White material is polypropylene glycol 400；
B. by composite insulation cross arm mold clean it is clean after, even application release agent；
C. the composite insulation cross arm mold of spray coated release agent is preheated for 24 hours at 90~120 DEG C；
D. the hollow phenolic aldehyde microballon wet mix obtained in the catalyst and step a of 10~200 parts by weight is weighed；It obtains
Hollow phenolic aldehyde bead mixture, catalyst are stannous octoate；
The hollow phenolic aldehyde bead mixture obtained in black material and step d is blended in one by the black material for e. weighing 75 parts by weight
It rises, and stirs 2min in the case where revolving speed is 1800r/min, be filled in after stirring in the composite insulation cross arm mold of preheating,
Solidify at 120 DEG C 8 hours or more, take out the product of curing molding from composite insulation cross arm mold later, obtains for multiple
The inner core packing material of insulator crossarm is closed, black material is methyl diphenylene diisocyanate.
Phenolic resin microspheres physical parameter are as follows: 120 μm of partial size；Purity 98%；Apparent density 0.15g/cm3；Floating ball rate is big
In 92.9%；Density 0.355g/cm3；5 μm of wall thickness.
Claims (2)
1. a kind of preparation method of the inner core packing material for composite insulation cross arm, which is characterized in that the method includes with
Lower step:
A. 2.8~7.7 parts by weight of phenolic resin microspheres, 25~75 parts by weight of white material are weighed；In revolving speed after above-mentioned raw materials are mixed
To stir 1~3min under 1000~1800r/min, hollow phenolic aldehyde microballon wet mix is obtained；The white material is polyethylene glycol
200 or polypropylene glycol 400；
B. by composite insulation cross arm mold clean it is clean after, even application release agent；
C. the composite insulation cross arm mold of spray coated release agent is preheated；
D. the hollow phenolic aldehyde microballon wet mix obtained in the catalyst and step a of 10~200 parts by weight is weighed；It obtains hollow
Phenolic aldehyde bead mixture, the catalyst are triethylene diamine, dimethylaminoethyl ether, stannous octoate, pentamethyl divinyl three
One of amine；
The hollow phenolic aldehyde bead mixture obtained in black material and step d is blended in one by the black material for e. weighing 25~75 parts by weight
It rises, and stirs 1~2min in the case where revolving speed is 1000~1800r/min, the composite insulation cross arm of preheating is filled in after stirring
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,
The inner core packing material for composite insulation cross arm is obtained, the black material is methyl diphenylene diisocyanate.
2. a kind of preparation method of inner core packing material for composite insulation cross arm according to claim 1, feature
It is: the phenolic resin microspheres physical parameter are as follows: 60~120 μm of partial size；95% or more purity；Apparent density 0.05~
0.15g/cm3；Floating ball rate is greater than 92.9%；0.150~0.355g/cm3 of density；1~5 μm of wall thickness.
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| CN201910641705.4A CN110330631A (en) | 2019-07-16 | 2019-07-16 | Preparation method of inner core filling material for composite insulating cross arm |
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| CN201910641705.4A CN110330631A (en) | 2019-07-16 | 2019-07-16 | Preparation method of inner core filling material for composite insulating cross arm |
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| CN1711311A (en) * | 2002-11-18 | 2005-12-21 | 热技术有限公司 | A syntactic phenolic foam composition |
| CN101837643A (en) * | 2009-12-30 | 2010-09-22 | 上海新天和树脂有限公司 | Low-density resin transfer die forming process and matching production device thereof |
| CN103087463A (en) * | 2013-01-28 | 2013-05-08 | 奇瑞汽车股份有限公司 | Light composite material |
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