CN104836177B - Preparation method of insulating separator plate for bus duct - Google Patents
Preparation method of insulating separator plate for bus duct Download PDFInfo
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- CN104836177B CN104836177B CN201510291119.3A CN201510291119A CN104836177B CN 104836177 B CN104836177 B CN 104836177B CN 201510291119 A CN201510291119 A CN 201510291119A CN 104836177 B CN104836177 B CN 104836177B
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Abstract
The invention discloses an insulating separator plate for a bus duct. The insulating separator plate comprises a main base material layer and glass fiber cloth layers, the glass fiber cloth layers are respectively arranged on and under the main base material layer, the surface of the glass fiber cloth layer on the main base material layer is pasted with a surface protective layer, the glass fiber cloth layer under the main base material layer is pasted with a non-woven fabric layer, the two sides of the glass fiber cloth layers, the surface protective layer and the non-woven fabric layer are overlapped in the thickness direction of the main base material layer, and the two sides of the overlapped position of the glass fiber cloth layers, the surface protective layer and the non-woven fabric layer are provided with connecting strips respectively. A preparation method of the insulating separator plate is simple and practicable, production and processing are convenient, the energy consumption of production is low, and environmental pollution is avoided; and the prepared insulating separator plate for the bus duct is simple in structure, high in the fireproof performance, intensity, wear resistance, insulation performance and safety coefficient, and long in service life.
Description
Technical field
The present invention relates to a kind of insulating barrier and its preparation, and in particular to insulative spacer elements and its system in a kind of bus duct
Preparation Method, belongs to the technical field of improvement of bus duct.
Background technology
Modern high-rise building and large-scale workshop need huge electric energy, and face hundreds and thousands of peaces needed for this huge load
The powerful electric current of training will select safe and reliable transmission equipment, and bus-bar system is selection well, and bus duct system is one
Kind efficiently the power distribution equipment of conveying electric current, has especially adapted to higher and higher building and large-scale plant economical rationality distribution
Need；Bus duct it using copper or aluminium as conductor, with non-alkene body insulating supporting, what is be then attached in metallic channel and formed new leads
Body, nowadays into indispensable wiring mode in the electric equipments such as skyscraper, factory, power system；Due to building, work
The need for the various building electric power such as factory, and this needs increased trend year by year, using original circuit wiring pattern, that is, wear
Pipe mode, brings many difficulties during construction, and, when distribution system to be changed, can not when it is become simple some almost
Can, then, if using bus duct, being very easy to just achieve the goal, also building can in addition become more
It is attractive in appearance；From for economic aspect, bus duct compares with cable in itself, price some, but with it is various attached comprising distribution
Part and whole power system compare using bus duct can make construction cost just it is cheap more, particularly big feelings of current capacity
It is in this case more obvious under condition.
The part of bus duct include insulating supporting, installing plate, installation frame, shell, door, cover plate, side plate, insulation every
Plate, charging member, exposed conductive component, protection conductor, insulating barrier therein are used to from the straight of porch all directions
A kind of part that contact is protected with the electric arc from switching device and similar device, the insulating barrier for using at present is resistance to
Warm poor performance, insulating properties be not good, intensity difference, the defect such as service life is short, causes the service life of bus duct to shorten, and increased into
This, reduces operating efficiency, therefore, researching and developing a kind of insulating barrier for bus duct that can overcome disadvantages described above turns into this area
Technical staff's technical problem urgently to be resolved hurrily.
The content of the invention
The technical problems to be solved by the invention are the shortcomings for overcoming prior art, there is provided a kind of bus duct insulating barrier
And preparation method thereof, the preparation method is simple and easy to apply, and production and processing is convenient, and energy consumption is low, free from environmental pollution, the mother for preparing
Wire casing insulating barrier simple structure, fire protecting performance is good, with high intensity, high-wearing feature, high-insulativity, long service life, safety
Coefficient is high.
In order to solve the above technical problems, a kind of bus duct insulating barrier, including main body binder layer and glass layer of cloth, glass
Fine layer of cloth is respectively arranged at the both sides up and down of main body binder layer, and the glass-fiber-fabric layer surface being placed on the upside of main body binder layer is pasted with table
Face overcoat, is also bonded with nonwoven layer on the glass layer of cloth being placed on the downside of main body binder layer, glass layer of cloth, surface protecting layer and
The both sides of nonwoven layer overlap on the thickness direction of main body binder layer, and glass layer of cloth, surface protecting layer and nonwoven layer
The both sides at overlapping place are equipped with connection strap.
The of the invention technical scheme for further limiting as：
In foregoing bus duct insulating barrier, connection strap overlaps place with glass layer of cloth, surface protecting layer and nonwoven layer
Between coating one layer fire prevention glue-line.
Connection strap is preferably connected to the both sides of glass layer of cloth, surface protecting layer and nonwoven layer using fire prevention glue-line,
Also the degree of adhesion between bus duct insulating barrier is preferably ensured.
In foregoing bus duct insulating barrier, glass layer of cloth by least two-layer impregnated of water-base epoxy dielectric adhesive glass
Fine cloth overlapping composition.
In foregoing bus duct insulating barrier, nonwoven layer is that three-decker bonds composition, and the wherein second layer is fusion spray cloth,
Ground floor and third layer are spinning building.
The non-woven fabrics is made using online combination process, and online combination process refers to that SMS is compound can be by same
Spunbond and melt-blowing equipment on bar production line realizes, i.e., so-called SMS by one-step method, on same production line, while having
Individual spunbond die and individual meltblown beam, first spray long filament and form ground floor fibre web i.e. spinning building by the-individual spunbond die,
It is fusion spray cloth to form second layer fibre web above by meltblown beam again, and it is fine then to form third layer through second spunbond die
Net is spinning building, and this three layers of fibre webs are bonded by hot-rolling mill, are eventually passed up- coiler trimming and are wound to form non-woven fabrics；In the present invention
The non-woven fabrics for using is a kind of combination of spunbond and melt-blown process, be the characteristics of Nonwovens of spunbond is maximum in fibre web fiber to connect
Continuous long filament, compared with other non-woven cloth products with grammes per square metre, intensity is high, and vertically and horizontally performance is approached, but it is into the net uniformity and table
Face spreadability is poor；Meltblown nonwovens are constituted for superfine fibre, and fibre diameter is thin, and cloth cover specific surface area is big, and porosity is small, mistake
Filtration resistance power is small, and filter efficiency is high, and surface coverage agent shielding properties is fine, and it has the disadvantage low intensity, and wearability is poor, first
Both is combined, the complex for being formed then compensate for mutual weakness just so that the non-woven fabrics for preparing has
Intensity is high, and the characteristics of wearability is good, while having excellent shielding properties again, intensity wearability, anti-flammability is more preferable.
In foregoing bus duct insulating barrier, surface protecting layer is the high temperature mould release membrance of at least two-layer overlapping, main body base-material
Layer is mica paper layer.
High temperature mould release membrance has good heat-resisting quantity, fillibility and separation property, enhances insulating barrier in bus duct
Service life, also extends the service life of bus duct, reduces cost.
The present invention have also been devised a kind of preparation method of bus duct insulating barrier, including step in detail below：
(1) water-base epoxy dielectric adhesive is first prepared, is concretely comprised the following steps：
A. the synthesis of aqueous epoxy resins：Bisphenol A epoxide resin, propylene glycol monomethyl ether are put into agitator, returned cold
In the four-hole boiling flask of the 500ml of condenser, constant pressure funnel and thermometer, 75% polyethylene glycol and 25% acid anhydrides are subsequently adding,
Under the protection of N2,150-180 DEG C is heated to, 100-115 DEG C is cooled to by remaining polyethylene glycol and acid anhydrides after reaction 1-3h
All add, be warming up to 140-160 DEG C of stirring 10-15min, be subsequently adding nertralizer trialkylalcohol amine, stirring 20-30min is simultaneously
Regulation pH value is 7-8, is eventually adding deionized water, and at 35-50 DEG C, stirring 30-50min dischargings obtain water-base epoxy tree to temperature control
Fat；
B. to auxiliary agent and curing agent is added in the aqueous epoxy resins prepared in step (a), it is stirred at room temperature
20-50min, PH to 7.5-8.5 is adjusted after being well mixed with trialkylalcohol amine, is added deionized water to continue stirring 15-30min and is
Water-base epoxy dielectric adhesive is obtained, it is stand-by；
(2) the first one-step forming of bus duct insulating barrier：Take four pieces of glass-fiber-fabrics and be all immersed in step (1) what is prepared
In aqueous epoxy resins dielectric adhesive, 10-15min is impregnated, then taken out, every two pieces of glass-fiber-fabrics are built up glass layer of cloth point
The both sides up and down of main body binder layer mica paper are not bonded in, and glass layer of cloth is overlapped in the width of main body binder layer, so
Layer of surface overcoat is bonded in the upper surface of glass layer of cloth afterwards, layer of non-woven fabric layer, table are bonded in the lower surface of glass layer of cloth
Face overcoat, nonwoven layer are overlapped in the width of main body binder layer；
(3) dry, prune：The bus duct insulating barrier that just one-step forming will be obtained in step (2) enters at 50-80 DEG C
Row drying, then cuts off the prominent edge when bonding, and keeps the bus duct of just one-step forming perfect with insulating barrier profile；
(4) bus duct is hot-forming with insulating barrier, will dry, prune after first one-step forming bus duct insulate every
Plate heat delivers to heat pressing forming machines to be carried out hot-forming, is concretely comprised the following steps：
A. heat up exhaust, closes cold press and applies the pressure of 0.10-0.15MPa, and heated press reduces to 60-75 DEG C
Pressure is opened press and is deflated in short-term to zero；
Under the pressure of 0.10-0.15MPa, heated press reduces pressure to zero to 100-108 DEG C, and press is opened in short-term
Deflate；
B. hot-press solidifying, under 1-2MPa, 130-140 DEG C is warming up to by press, maintains 5-8min, then boosts to 15-
18MPa, and pressurize 1-2h so that fiberglass layer is well-bonded with main body binder layer；
C. keeping the pressure in step b again be cooled to 40-50 DEG C, cools down 10-15min, then opens press, and
The both sides that glass layer of cloth, surface protecting layer and nonwoven layer overlap place bonding connection bar is distinguished by fireproof gum, you can obtain most
The bus duct insulating barrier of final shaping unit；
(5) hot-forming bus duct is checked one by one with insulating barrier, rejects defective, qualified carrying out
Packaging and storage.
The of the invention technical scheme for further limiting as：
It is aqueous when aqueous epoxy resins dielectric adhesive is prepared in the preparation method of foregoing bus duct insulating barrier
Each component content based on the number of quality hundred is in epoxy resins insulation adhesive：Aqueous epoxy resins：70-80 parts, auxiliary agent 10-15
Part, curing agent：5-8 parts, deionized water：10-30 parts, auxiliary agent includes according to the mass fraction, dispersant：2-4 parts, defoamer：2-3
Part, toughener：2-5 parts, accelerator：2-3 parts, inserts：1-2 parts, wherein：
Curing agent is water-soluble bisphenol A formaldehyde resin, and dispersant is sodium tripolyphosphate, sodium tetrapolyphosphate or calgon
In one kind, defoamer is the one kind in dimethicone or polyvinyl acetate, and toughener is poly- azelaic acid acid anhydride, and accelerator is
2,4,6- tri- (dimethylamino methyl) phenol, inserts is the coupling SiClx micro mist of 300-400 mesh.
The beneficial effects of the invention are as follows：
The bottom of the bus duct insulating barrier in the present invention employs non-woven fabrics, and non-woven fabrics is soft to be given comfortably
Feel simultaneously cheap, its water-repellancy is splendid, with porous, good permeability, and easily holding surface is dry and comfortable, when in use by
In its stable performance, nontoxic, free from extraneous odour, security is very high, due to being carried added with non-woven fabrics, thus the intensity of insulating barrier
It is high.
Submitted in the thickness direction of main body binder layer the both sides of glass layer of cloth of the present invention, surface protecting layer and nonwoven layer
It is folded, and the both sides of glass layer of cloth, surface protecting layer and the nonwoven layer place of overlapping are equipped with connection strap, more consolidate between each layer
Connection, space will not be produced between each layer, good airproof performance when using, service life extension.
With mica paper as base material in the present invention, supporting material glass layer of cloth, surface protecting layer and nonwoven layer are added, entered
Row is compound, enhances the performances such as insulating properties, wearability, and the adhesive of glass layer of cloth dipping is that aqueous epoxy resins are exhausted in the present invention
Edge adhesive, with water as solvent, there is good permeability and cohesive force to base material, safety non-toxic, after cured crosslinking, aqueous ring
Oxygen tree fat has the chemical stability and excellent electrical insulation properties that mechanical strength is high, attachment cementitiousness is strong, good, complete
The requirement of full up sufficient mica insulation industry.
Required according to mica insulator, using polyethylene glycol, phthalic anhydride compound modification of epoxy resin, introduce carboxylic group,
Hydrophily is made it have, polyethylene glycol improves epoxy resin pliability and hydrophily, and phthalic anhydride in its structure due to containing phenyl ring, energy
Enough improve the heat resistance and water resistance of aqueous epoxy resins.
Using substep hot press forming technology, including intensification exhaust phase, hot-press solidifying stage and pressurize cooling stage are solved
Exhausting problem, the completion of whole set process effectively increases the performance of the insulating barrier prepared.
Simple structure of the present invention, fire protecting performance is good, with high intensity, high-wearing feature, and in service life, production and processing side
Just, energy consumption is low, free from environmental pollution.
Brief description of the drawings
Fig. 1 is the structural representation of bus duct insulating barrier of the present invention；
In figure：1- main body binder layers, 2- glass layer of cloths, 3- nonwoven layers, 4- surface protecting layers, 5- connection straps.
Specific embodiment
Embodiment 1
A kind of bus duct insulating barrier that the present embodiment is provided, structure is as shown in figure 1, including main body binder layer 1 and glass
Fine layer of cloth 2, glass-fiber-fabric overlapping of the glass layer of cloth 2 by least two-layer impregnated of water-base epoxy dielectric adhesive is constituted, glass layer of cloth 2
The both sides up and down of main body binder layer 1 are respectively arranged at, the surface mount of glass layer of cloth 2 for being placed in the upside of main body binder layer 1 has surface
Overcoat 4, surface protecting layer 4 is the high temperature mould release membrance of at least two-layer overlapping, and main body binder layer 1 is mica paper layer, is placed in main body
Nonwoven layer 3 is also bonded with the glass layer of cloth 2 of the downside of binder layer 1, nonwoven layer 3 is that three-decker bonds composition, wherein the
Two layers is fusion spray cloth, and ground floor and third layer are spinning building, the both sides of glass layer of cloth 2, surface protecting layer 4 and nonwoven layer 3
Overlapped on the thickness direction of main body binder layer 1, and glass layer of cloth 2, surface protecting layer 4 and nonwoven layer 3 overlap the two of place
Side is equipped with connection strap 5, and one layer of coating is prevented between connection strap 5 and glass layer of cloth 2, surface protecting layer 4 and nonwoven layer 3 are overlapped
Fiery glue-line.
Embodiment 2
The present embodiment provides the preparation method of the median generatrix groove insulating barrier of above-described embodiment 1, including step in detail below：
(1) water-base epoxy dielectric adhesive is first prepared, is concretely comprised the following steps：
Each component content based on the number of quality hundred is in aqueous epoxy resins dielectric adhesive：Aqueous epoxy resins：70 parts,
Pentasodium triphosphate of dispersing agent：2 parts, defoamer polyvinyl acetate：2 parts, the poly- azelaic acid acid anhydride of toughener：2 parts, accelerator 2,4,6-
Three (dimethylamino methyl) phenol：3 parts, the coupling SiClx micro mist of the mesh of inserts 300：1 part, curing agent water solubility bisphenol A formaldehyde
Resin：8 parts, deionized water：20 parts；
A. the synthesis of aqueous epoxy resins：Bisphenol A epoxide resin, propylene glycol monomethyl ether are put into agitator, returned cold
In the four-hole boiling flask of the 500ml of condenser, constant pressure funnel and thermometer, 75% polyethylene glycol and 25% acid anhydrides are subsequently adding,
Under the protection of N2,150 DEG C are heated to, 100 DEG C are cooled to after reaction 2h and all add remaining polyethylene glycol and acid anhydrides, risen
Temperature is subsequently adding nertralizer trialkylalcohol amine to 150 DEG C of stirring 10min, and it is 7 to stir 25min and adjust pH value, is eventually adding
Ionized water, at 40 DEG C, stirring 30min dischargings obtain aqueous epoxy resins to temperature control；
B. dispersant, defoamer, toughness reinforcing are included to addition auxiliary agent in the aqueous epoxy resins prepared in step (a)
Agent, accelerator and inserts add curing agent, and 50min is stirred at room temperature, and PH is adjusted with trialkylalcohol amine after being well mixed
To 7.5, it is to obtain water-base epoxy dielectric adhesive to add deionized water to continue to stir 15min, stand-by；
(2) the first one-step forming of bus duct insulating barrier：Take four pieces of glass-fiber-fabrics and be all immersed in step (1) what is prepared
In aqueous epoxy resins dielectric adhesive, 10min is impregnated, then taken out, every two pieces of glass-fiber-fabrics are built up glass layer of cloth 2 and distinguish
The both sides up and down of the mica paper of main body binder layer 1 are bonded in, and glass layer of cloth 2 is overlapped in the width of main body binder layer 1, so
Layer of surface overcoat 4 is bonded in the upper surface of glass layer of cloth 2 afterwards, layer of non-woven fabric layer is bonded in the lower surface of glass layer of cloth 2
3, surface protecting layer 4, nonwoven layer 3 are overlapped in the width of main body binder layer 1；
(3) dry, prune：The bus duct that just one-step forming will be obtained in step (2) is carried out with insulating barrier at 65 DEG C
Drying, then cuts off the prominent edge when bonding, and keeps the bus duct of just one-step forming perfect with insulating barrier profile；
(4) bus duct is hot-forming with insulating barrier, will dry, prune after first one-step forming bus duct insulate every
Plate heat delivers to heat pressing forming machines to be carried out hot-forming, is concretely comprised the following steps：
A. heat up exhaust, closes cold press and applies the pressure of 0.15MPa, and heated press reduces pressure to zero to 60 DEG C,
Press is opened in short-term to deflate；
Under the pressure of 0.15MPa, heated press reduces pressure to zero to 100 DEG C, press is opened in short-term and is deflated；
B. hot-press solidifying, under 1MPa, 135 DEG C is warming up to by press, maintains 5min, then boosts to 15MPa, and pressurize
2h so that fiberglass layer is well-bonded with main body binder layer；
C. keeping the pressure in step b again carries out being cooled to 40 DEG C, cools down 15min, then opens press, and in glass-fiber-fabric
The both sides at layer 2, surface protecting layer 4 and nonwoven layer 3 overlapping place bonding connection bar is distinguished by fireproof gum, you can obtain finally into
The bus duct insulating barrier of type；
(5) hot-forming bus duct is checked one by one with insulating barrier, rejects defective, qualified carrying out
Packaging and storage.
Embodiment 3
The present embodiment provides the preparation method of the median generatrix groove insulating barrier of above-described embodiment 1, including step in detail below：
(1) water-base epoxy dielectric adhesive is first prepared, is concretely comprised the following steps：
Each component content based on the number of quality hundred is in aqueous epoxy resins dielectric adhesive：Aqueous epoxy resins：80 parts,
Sodium hexametaphosphate dispersant：3 parts, defoamer polyvinyl acetate：2 parts, the poly- azelaic acid acid anhydride of toughener：4 parts, accelerator 2,4,6-
Three (dimethylamino methyl) phenol：2 parts, the coupling SiClx micro mist of the mesh of inserts 400：1 part, curing agent water solubility bisphenol A formaldehyde
Resin：5 parts, deionized water：10 parts；
A. the synthesis of aqueous epoxy resins：Bisphenol A epoxide resin, propylene glycol monomethyl ether are put into agitator, returned cold
In the four-hole boiling flask of the 500ml of condenser, constant pressure funnel and thermometer, 75% polyethylene glycol and 25% acid anhydrides are subsequently adding,
Under the protection of N2,180 DEG C are heated to, 115 DEG C are cooled to after reaction 1h and all add remaining polyethylene glycol and acid anhydrides, risen
Temperature is subsequently adding nertralizer trialkylalcohol amine to 140 DEG C of stirring 15min, and it is 8 to stir 30min and adjust pH value, is eventually adding
Ionized water, at 35 DEG C, stirring 50min dischargings obtain aqueous epoxy resins to temperature control；
B. dispersant, defoamer, toughness reinforcing are included to addition auxiliary agent in the aqueous epoxy resins prepared in step (a)
Agent, accelerator and inserts add curing agent, and 20min is stirred at room temperature, and PH is adjusted with trialkylalcohol amine after being well mixed
To 8.5, it is to obtain water-base epoxy dielectric adhesive to add deionized water to continue to stir 30min, stand-by；
(2) the first one-step forming of bus duct insulating barrier：Take four pieces of glass-fiber-fabrics and be all immersed in step (1) what is prepared
In aqueous epoxy resins dielectric adhesive, 10min is impregnated, then taken out, every two pieces of glass-fiber-fabrics are built up glass layer of cloth 2 and distinguish
The both sides up and down of the mica paper of main body binder layer 1 are bonded in, and glass layer of cloth 2 is overlapped in the width of main body binder layer 1, so
Layer of surface overcoat 4 is bonded in the upper surface of glass layer of cloth afterwards, layer of non-woven fabric layer 3 is bonded in the lower surface of glass layer of cloth 2,
Surface protecting layer 4, nonwoven layer 3 are overlapped in the width of main body binder layer 1；
(3) dry, prune：The bus duct that just one-step forming will be obtained in step (2) is carried out with insulating barrier at 50 DEG C
Drying, then cuts off the prominent edge when bonding, and keeps the bus duct of just one-step forming perfect with insulating barrier profile；
(4) bus duct is hot-forming with insulating barrier, will dry, prune after first one-step forming bus duct insulate every
Plate heat delivers to heat pressing forming machines to be carried out hot-forming, is concretely comprised the following steps：
A. heat up exhaust, closes cold press and applies the pressure of 0.10MPa, and heated press reduces pressure to zero to 75 DEG C,
Press is opened in short-term to deflate；
Under the pressure of 0.10MPa, heated press reduces pressure to zero to 108 DEG C, press is opened in short-term and is deflated；
B. hot-press solidifying, under 2MPa, 140 DEG C is warming up to by press, maintains 8min, then boosts to 18MPa, and pressurize
1h so that fiberglass layer is well-bonded with main body binder layer；
C. keeping the pressure in step b again carries out being cooled to 50 DEG C, cools down 12min, then opens press, and in glass
The both sides at layer of cloth 2, surface protecting layer 4 and nonwoven layer 3 overlapping place bonding connection bar is distinguished by fireproof gum, you can obtain final
The bus duct insulating barrier of shaping；
(5) hot-forming bus duct is checked one by one with insulating barrier, rejects defective, qualified carrying out
Packaging and storage.
Embodiment 4
The present embodiment provides the preparation method of the median generatrix groove insulating barrier of above-described embodiment 1, including step in detail below：
(1) water-base epoxy dielectric adhesive is first prepared, is concretely comprised the following steps：
Each component content based on the number of quality hundred is in aqueous epoxy resins dielectric adhesive：Aqueous epoxy resins：75 parts,
Dispersant sodium tetrapolyphosphate：4 parts, defoamer dimethicone：3 parts, the poly- azelaic acid acid anhydride of toughener：5 parts, accelerator 2,4,6- tri-
(dimethylamino methyl) phenol：2 parts, the coupling SiClx micro mist of the mesh of inserts 350：1 part, curing agent water solubility bisphenol A formaldehyde tree
Fat：7 parts, deionized water：30 parts；
A. the synthesis of aqueous epoxy resins：Bisphenol A epoxide resin, propylene glycol monomethyl ether are put into agitator, returned cold
In the four-hole boiling flask of the 500ml of condenser, constant pressure funnel and thermometer, 75% polyethylene glycol and 25% acid anhydrides are subsequently adding,
Under the protection of N2,165 DEG C are heated to, 108 DEG C are cooled to after reaction 3h and all add remaining polyethylene glycol and acid anhydrides, risen
Temperature is subsequently adding nertralizer trialkylalcohol amine to 160 DEG C of stirring 12min, stirs 20min and adjusts pH value for 8 are eventually adding
Ionized water, at 50 DEG C, stirring 40min dischargings obtain aqueous epoxy resins to temperature control；
B. dispersant, defoamer, toughness reinforcing are included to addition auxiliary agent in the aqueous epoxy resins prepared in step (a)
Agent, accelerator and inserts add curing agent, and 35min is stirred at room temperature, and PH is adjusted with trialkylalcohol amine after being well mixed
To 8.0, it is to obtain water-base epoxy dielectric adhesive to add deionized water to continue to stir 22min, stand-by；
(2) the first one-step forming of bus duct insulating barrier：Take four pieces of glass-fiber-fabrics and be all immersed in step (1) what is prepared
In aqueous epoxy resins dielectric adhesive, 15min is impregnated, then taken out, every two pieces of glass-fiber-fabrics are built up glass layer of cloth 2 and distinguish
The both sides up and down of the mica paper of main body binder layer 1 are bonded in, and glass layer of cloth 2 is overlapped in the width of main body binder layer 1, so
Layer of surface overcoat 4 is bonded in the upper surface of glass layer of cloth 2 afterwards, layer of non-woven fabric layer is bonded in the lower surface of glass layer of cloth 2
3, surface protecting layer 4, nonwoven layer 3 are overlapped in the width of main body binder layer 1；
(3) dry, prune：The bus duct that just one-step forming will be obtained in step (2) is carried out with insulating barrier at 80 DEG C
Drying, then cuts off the prominent edge when bonding, and keeps the bus duct of just one-step forming perfect with insulating barrier profile；
(4) bus duct is hot-forming with insulating barrier, will dry, prune after first one-step forming bus duct insulate every
Plate heat delivers to heat pressing forming machines to be carried out hot-forming, is concretely comprised the following steps：
A. heat up exhaust, closes cold press and applies the pressure of 0.12MPa, and heated press reduces pressure to zero to 65 DEG C,
Press is opened in short-term to deflate；
Under the pressure of 0.12MPa, heated press reduces pressure to zero to 105 DEG C, press is opened in short-term and is deflated；
B. hot-press solidifying, under 1MPa, 130 DEG C is warming up to by press, maintains 7min, then boosts to 16MPa, and pressurize
1.5h so that fiberglass layer is well-bonded with main body binder layer；
C. keeping the pressure in step b again carries out being cooled to 45 DEG C, cools down 10min, then opens press, and in glass
The both sides at layer of cloth 2, surface protecting layer 4 and nonwoven layer 3 overlapping place bonding connection bar is distinguished by fireproof gum, you can obtain final
The bus duct insulating barrier of shaping；
(5) hot-forming bus duct is checked one by one with insulating barrier, rejects defective, qualified carrying out
Packaging and storage.
In addition to the implementation, the present invention can also have other embodiment.All use equivalents or equivalent transformation shape
Into technical scheme, all fall within the protection domain of application claims.
Claims (6)
1. a kind of preparation method of bus duct insulating barrier, the insulating barrier includes main body binder layer (1) and glass layer of cloth
(2), described glass layer of cloth (2) is respectively arranged at the both sides up and down of main body binder layer (1), described to be placed in main body binder layer (1)
Glass layer of cloth (2) surface mount of upside has surface protecting layer (4), the glass layer of cloth being placed on the downside of main body binder layer (1)
(2) nonwoven layer (3) is also bonded with, the both sides of described glass layer of cloth (2), surface protecting layer (4) and nonwoven layer (3) exist
Overlapped on the thickness direction of described main body binder layer (1), and glass layer of cloth (2), surface protecting layer (4) and nonwoven layer
(3) both sides for overlapping place are equipped with connection strap (5), it is characterised in that：Preparation method includes step in detail below：
(1) water-base epoxy dielectric adhesive is first prepared, is concretely comprised the following steps：
A. the synthesis of aqueous epoxy resins：By bisphenol A epoxide resin, propylene glycol monomethyl ether be put into agitator, reflux condenser,
In the four-hole boiling flask of the 500ml of constant pressure funnel and thermometer, 75% polyethylene glycol and 25% acid anhydrides are subsequently adding, N2's
Under protection, 150-180 DEG C is heated to, 100-115 DEG C is cooled to after reaction 1-3h and all adds remaining polyethylene glycol and acid anhydrides
Enter, be warming up to 140-160 DEG C of stirring 10-15min, be subsequently adding nertralizer trialkylalcohol amine, stir 20-30min and adjust PH
It is 7-8 to be worth, and is eventually adding deionized water, and at 35-50 DEG C, stirring 30-50min dischargings obtain aqueous epoxy resins to temperature control；
B. to auxiliary agent and curing agent is added in the aqueous epoxy resins prepared in step (a), 20- is stirred at room temperature
50min, PH to 7.5-8.5 is adjusted after being well mixed with trialkylalcohol amine, is added deionized water to continue stirring 15-30min and is obtained final product
It is stand-by to water-base epoxy dielectric adhesive；
(2) the first one-step forming of bus duct insulating barrier：Take four pieces of glass-fiber-fabrics and be all immersed in step (1) prepare aqueous
In epoxy resins insulation adhesive, 10-15min is impregnated, then taken out, every two pieces of glass-fiber-fabrics are built up glass layer of cloth (2) point
The both sides up and down of main body binder layer (1) mica paper, and glass layer of cloth (2) are not bonded in the width side of main body binder layer (1)
To overlapping, layer of surface overcoat (4) then is bonded in the upper surface of glass layer of cloth (2), glued in the lower surface of glass layer of cloth (2)
Knot layer of non-woven fabric layer (3), the surface protecting layer (4), nonwoven layer (3) are handed in the width of main body binder layer (1)
It is folded；
(3) dry, prune：The bus duct that just one-step forming will be obtained in step (2) is dried with insulating barrier at 50-80 DEG C
It is dry, the prominent edge when bonding then is cut off, keep the bus duct of just one-step forming perfect with insulating barrier profile；
(4) bus duct is hot-forming with insulating barrier, will dry, prune after first one-step forming bus duct with insulating barrier heat
Delivering to heat pressing forming machines carries out hot-forming, concretely comprises the following steps：
A. heat up exhaust, closes cold press and applies the pressure of 0.10-0.15MPa, and heated press reduces pressure to 60-75 DEG C
To zero, press is opened in short-term and is deflated；
Under the pressure of 0.10-0.15MPa, heated press reduces pressure to zero to 100-108 DEG C, press is opened in short-term and is deflated；
B. hot-press solidifying, under 1-2MPa, 130-140 DEG C is warming up to by press, maintains 5-8min, then boosts to 15-
18MPa, and pressurize 1-2h so that fiberglass layer is well-bonded with main body binder layer；
C. keeping the pressure in step b again carries out being cooled to 40-50 DEG C, cools down 10-15min, then opens press, and in glass
The both sides at layer of cloth (2), surface protecting layer (4) and nonwoven layer (3) overlapping place bonding connection bar is distinguished by fireproof gum, you can
To the bus duct insulating barrier of final molding；
(5) hot-forming bus duct is checked one by one with insulating barrier, reject defective, qualified carrying out is packed
Storage.
2. the preparation method of bus duct insulating barrier according to claim 1, it is characterised in that：The connection strap (5)
One layer of fire prevention glue-line of coating between overlapping with glass layer of cloth (2), surface protecting layer (4) and nonwoven layer (3).
3. the preparation method of bus duct insulating barrier according to claim 1, it is characterised in that：Described glass layer of cloth
(2) the glass-fiber-fabric overlapping by least two-layer impregnated of water-base epoxy dielectric adhesive is constituted.
4. the preparation method of bus duct insulating barrier according to claim 1, it is characterised in that：Described nonwoven layer
(3) constituted for three-decker is bonded, wherein the second layer is fusion spray cloth, and ground floor and third layer are spinning building.
5. the preparation method of bus duct insulating barrier according to claim 1, it is characterised in that：Described surfacecti proteon
Layer (4) is the high temperature mould release membrance of at least two-layer overlapping, and described main body binder layer (1) is mica paper layer.
6. the preparation method of bus duct insulating barrier according to claim 1, it is characterised in that：Preparing water-base epoxy
During insulation resin adhesive, each component content based on the number of quality hundred is in the aqueous epoxy resins dielectric adhesive：It is aqueous
Epoxy resin：70-80 parts, auxiliary agent 10-15 parts, curing agent：5-8 parts, deionized water：10-30 parts, described auxiliary agent presses mass parts
Counting meter includes, dispersant：2-4 parts, defoamer：2-3 parts, toughener：2-5 parts, accelerator：2-3 parts, inserts：1-2 parts, its
In：
Described curing agent is water-soluble bisphenol A formaldehyde resin, and described dispersant is sodium tripolyphosphate, sodium tetrapolyphosphate or six
One kind in sodium metaphosphate, described defoamer is the one kind in dimethicone or polyvinyl acetate, described toughener
It is poly- azelaic acid acid anhydride, described accelerator is 2,4,6- tri- (dimethylamino methyl) phenol, described inserts is 300-400 mesh
Coupling SiClx micro mist.
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| CN107579497A (en) * | 2017-10-25 | 2018-01-12 | 镇江市益宝电气科技有限公司 | A kind of fireproof bus duct and its preparation technology |
| CN108199320A (en) * | 2017-12-20 | 2018-06-22 | 盐城博鸣信息科技有限公司 | A kind of high pressure fire resisting water proof bus bar slot and preparation method thereof |
| CN108897109A (en) * | 2018-07-20 | 2018-11-27 | 江苏亨通光电股份有限公司 | Low-smoke non-halogen flame-retardant air-blowing micro-pipe |
| CN114188911B (en) * | 2021-12-30 | 2024-05-03 | 江苏创汇电气科技有限公司 | Manufacturing and production process of electric shock-proof intensive fireproof bus duct |
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| CN2518292Y (en) * | 2001-12-28 | 2002-10-23 | 石伟 | Carbon fiber combined electrothermal board |
| CN201111969Y (en) * | 2007-10-23 | 2008-09-10 | 苏州巨峰绝缘材料有限公司 | Epoxy glass cloth polyester fiber non-woven fabric less glue powder mica tape |
| CN101820213B (en) * | 2010-04-29 | 2013-06-19 | 中国船舶重工集团公司第七一二研究所 | Insulating gasket for laminated bus of high-power current converting device, manufacture method thereof and composite coating equipment |
| DE102010019382A1 (en) * | 2010-05-04 | 2011-11-10 | Airbus Operations Gmbh | Thermal insulating tape with fire protection function and its application in aircraft construction |
| CN202021871U (en) * | 2011-04-11 | 2011-11-02 | 浙江华昊化纤塑业有限公司 | Non-woven fabric with multilayer structure |
| CN102254649B (en) * | 2011-04-27 | 2012-07-18 | 金安国纪科技股份有限公司 | Insulating board with layered structure and preparation method for insulating board |
| CN102625497A (en) * | 2012-03-30 | 2012-08-01 | 常熟市海晟电器有限公司 | Carbon-fiber electric heating device |
| CN103408903B (en) * | 2013-08-28 | 2015-12-02 | 四川迪弗电工科技有限公司 | A kind of high-strength insulating supporting beam and preparation method thereof |
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