CN107828187A - A kind of erosion resisting insulation material for buried cable and preparation method thereof - Google Patents
A kind of erosion resisting insulation material for buried cable and preparation method thereof Download PDFInfo
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- CN107828187A CN107828187A CN201711229346.9A CN201711229346A CN107828187A CN 107828187 A CN107828187 A CN 107828187A CN 201711229346 A CN201711229346 A CN 201711229346A CN 107828187 A CN107828187 A CN 107828187A
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/40—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes epoxy resins
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- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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Abstract
The present invention provides a kind of erosion resisting insulation material for buried cable and preparation method thereof, belongs to insulating materials technical field, comprising component and its content be:The parts by weight of epoxy resin 20 28, the parts by weight of polytetrafluoroethylene (PTFE) 12 18, the parts by weight of coupling agent 3.8 5.5, the parts by weight of nano-oxide 12 17, the parts by weight of the third alkyl dimethyl ammonium chloride of polydiene base 4.5 5.6, the parts by weight of Kynoar 17 22, N, the parts by weight of N dimethyl acetamides 35 44, the parts by weight of waterproofing agent 6.7 7.2, the parts by weight of corrosion-resistant agent 8.9 9.6, the parts by weight of inhibitor 3.4 4.7, the parts by weight of fire retardant 3.3 4.2, the parts by weight of acetone 20 26, the parts by weight of water 40 55.Insulating materials mechanical performance, fire resistance prepared by the present invention is good, and water-fast, decay resistance is strong, excellent combination property, suitable for moist, the cold environment in underground.
Description
Technical field
The present invention relates to insulating materials technical field, and in particular to a kind of erosion resisting insulation material for buried cable and
Its preparation method.
Background technology
After modern society, because urban land is nervous, traffic pressure is big, the reason such as appearance of the city construction, many cables also by
Originally aerial more and more goes to underground.Relative to overhead line, small, transmission of electricity is reliable, anti-interference with taking up an area for buried cable
The advantages that ability is strong.
Power cable is typically laid in below earth's surface, is commonly used for power plant, electric substation, the power of industrial enterprise introduces or extraction
Line.Power cable is compared with overhead line, because it is laid on below earth's surface, so the influence of climate is smaller, it is securely and reliably, hidden
It is durable, but material cost, laying expense, maintenance cost are higher, and overhaul also relatively difficult with malfunction elimination.Underground electricity
For cable once damaging, maintenance cable is the thing taken time and effort very much, has a strong impact on that resident living and plant downtime, particularly industrial and mineral are cured
Loss can not be estimated caused by Yuan Deng R&D institutions.
Low-voltage network, device for electric line cable are frequently with the plastic peel electric wire conduct with polyvinyl chloride sheath
Electric energy transmission line, these electric wires are typically embedded under wall or earth's surface by poling, and the mode that can also sample surface is laid.Electricity
Spark caused by the defective insulation of line tends to cause factory building, house, public place etc. fire, causes casualties and wealth
Production loss.Therefore, the waterproof for buried cable, corrosion-resistant, excellent performance insulating materials are developed, to ensuring buried cable
Smooth safe operation, ensures people's lives and what is produced is normally carried out having great importance.
Publication No. CN105885355A patent document discloses a kind of high heat-resisting mix insulation material and its preparation side
Method, insulating materials include epoxy resin 30-40 parts, polytetrafluoroethylene (PTFE) 10-20 parts, polypropylene reinforcing fiber 10- in parts by weight
20 parts, silicon powder 4-10 parts, nano zine oxide 10-25 parts, nano-calcium carbonate 10-15 parts, silane coupler 3-8 parts, nanometer three
Al 2 O 10-20 parts, dibenzoyl peroxide 5-10 parts and plasticizer 7-12 parts, the invention manufacture craft is simple, makes
Process is environment friendly and pollution-free, and obtained insulating materials has good mechanical performance and electric property.But after tested, the invention
Obtained insulating materials is water-fast, acid-alkali-corrosive-resisting poor-performing, is not suitable for using in moist, cold environment, for underground
Cable, service life are shorter.
Publication No. CN107141663A patent document discloses a kind of corrosion-resistant composite cable insulating materials in field
Preparation method, it is characterised in that comprise the following steps:(1) by fluorubber, carbon black, tetraethyl orthosilicate, dimethicone, poly- second
Enol, carbon fiber carry out a banburying, obtain a banburying thing;(2) by a banburying thing, white carbon, rare earth oxide and oxidation
Zinc carries out secondary banburying, obtains secondary banburying thing;(3) secondary banburying thing is extruded in extruder;Wherein, the temperature of secondary banburying
It is higher than the temperature of a banburying 20-70 DEG C.Composite cable insulating materials intensity and corrosion resistance prepared by the invention is preferable, and this is multiple
It is simple to close the preparation method of cable insulation material, it is easy to spread, there is higher application value.But the insulating materials is anti-
It is 20.1N/mm to open maximum intensity2, elongation at break is up to 422.8%, and mechanical performance has much room for improvement, the preparation side of the invention
Method, raw material is only subjected to banburying twice, is not dried, be modified etc. and handle, cause purity inadequate, the combination property of material compared with
Difference.
The content of the invention
In view of this, the present invention provides a kind of satisfactory mechanical property, water-fast, corrosion-resistant, excellent insulation performance, for underground
Erosion resisting insulation material of cable and preparation method thereof.
In order to solve the above technical problems, the technical solution adopted by the present invention is:
A kind of erosion resisting insulation material for buried cable, comprising component and its content be:Epoxy resin 20-28 weight
Part, polytetrafluoroethylene (PTFE) 12-18 parts by weight, coupling agent 3.8-5.5 parts by weight, nano-oxide 12-17 parts by weight, polydiene base third
Alkyl dimethyl ammonium chloride 4.5-5.6 parts by weight, Kynoar 17-22 parts by weight, DMAC N,N' dimethyl acetamide 35-44 parts by weight,
Waterproofing agent 6.7-7.2 parts by weight, corrosion-resistant agent 8.9-9.6 parts by weight, inhibitor 3.4-4.7 parts by weight, fire retardant 3.3-4.2 weights
Measure part, acetone 20-26 parts by weight, water 40-55 parts by weight.
Further, the coupling agent is APTES or 3- glycydoxy front threes
TMOS.
Further, the nano-oxide is the mixing of nano magnesia, nano silicon, nano titanium oxide
Thing, weight compare nano magnesia:Nano silicon:Nano titanium oxide is 4:3:3.
Further, the waterproofing agent is sodium methyl silicate or potassium methyl silicate.
Further, the corrosion-resistant agent is one or both of poly-aspartate, hexa.
Further, the corrosion-resistant agent is the mixture of poly-aspartate and hexa, and weight is than poly- asparagus fern
Propylhomoserin:Hexa is 3:7.
Further, the inhibitor is styrene or hydroquinones.
Further, the fire retardant is the one or more in fire retardant DDP, fire retardant DOPO, tricresyl phosphate.
Further, the fire retardant be fire retardant DDP, fire retardant DOPO, the mixture of tricresyl phosphate, weight ratio
Fire retardant DDP:Fire retardant DOPO:Tricresyl phosphate is 3:2:5.
Further, the preparation method of a kind of erosion resisting insulation material for buried cable, is comprised the following steps:
1)The nano-oxide of 12-17 parts by weight is placed in 80 DEG C of vacuum drying chambers after drying 13-14h, with 20-26 parts by weight
Acetone mixing, add 3.8-5.5 parts by weight coupling agent, be placed in magnetic stirring apparatus and stir, in 20 DEG C -25 DEG C of condition
Under, rotating speed 300-400r/min, mixing time 2-4h, filter, filtrate dried into 6-8h in 75-80 DEG C of baking oven, grind,
Obtain the nano-oxide powder of surface modification;
2)It is placed in by the Kynoar of 17-22 parts by weight, by the DMA of 35-44 parts by weight in reactor,
Nitrogen is passed through, temperature of reaction kettle is controlled at 90-120 DEG C, speed of agitator 200-300r/min, 2-3h is stirred, is mixed
Thing one;
3)By the epoxy resin of 20-28 parts by weight, the polytetrafluoroethylene (PTFE) of 12-18 parts by weight, 4.5-5.6 parts by weight polydiene base
The water mixing of third alkyl dimethyl ammonium chloride, 40-55 parts by weight, is placed on magnetic stirring apparatus, under conditions of 20 DEG C -25 DEG C, stirring
4-6h, mixing speed 600-800r/min, obtain mixture two;
4)To step 3)Step 1 is added in obtained mixing two)Obtained nano-oxide powder and step 2)Obtained mixing
Thing one, is placed in banbury and is kneaded 10-15min, and melting temperature is 115-130 DEG C, obtains a mixture;
5)To step 4)Waterproofing agent, the corrosion resistant of 8.9-9.6 parts by weight of 6.7-7.2 parts by weight are added in an obtained mixture
Agent, the inhibitor of 3.4-4.7 parts by weight, the fire retardant of 3.3-4.2 parts by weight are lost, continues to be kneaded 40-60min in banbury,
Melting temperature is 115-130 DEG C, is produced.
The beneficial effects of the invention are as follows:Epoxy resin is as etch-proof material, and not only water resistant, leakage resistance are good, intensity
It is higher, while adhesive force is strong, dielectric properties are good, and deformation retract rate is small, can improve the stability and pliability of material.The present invention
The epoxy resin used has a good mechanical performance for novolac epoxy resin, and heat resistance is more preferable.
Polytetrafluoroethylene (PTFE) has fabulous heat resistance and lower temperature resistance, and dielectric constant is smaller, and insulaion resistance is high, insulating properties
Can be excellent, and stable chemical performance, satisfactory mechanical property, the present invention are organically combined using polytetrafluoroethylene (PTFE) and epoxy resin, filled
The premium properties of the two is waved in distribution, improves the corrosion-resistant and insulating properties of material.
Using coupling agent modified nano-oxide, the lipophile of nano-particle is improved, is made it easier in organic solvent
It is scattered, strengthen the compatibility between molecule, show good interfacial phenomenon, improve the mechanical property of material.
The alkyl dimethyl ammonium chloride of polydiene base third organically combines with nanometer oxide particle, improves the corrosion resistance of material, together
When reinforced epoxy solidification effect.Kynoar is combined with DMA, and the impact for improving material is strong
Degree and toughness, the wearability of reinforcing material, while Kynoar has excellent resistance to chemical corrosion, with epoxy resin and
Polytetrafluoroethylene (PTFE) is combined, the common combination property for improving material.The present invention is in Kynoar and DMAC N,N' dimethyl acetamide
During mixing, nitrogen is passed through, reduce being mixed into for gaseous impurity in air, ensure the purity of each component.
Waterproofing agent strengthens hydrophobicity, improves the impervious moisture protection of material, and corrosion-resistant agent improves material acid-proof alkaline, increases
Extensive chemical stability, extend the service life of material.Inhibitor can suppress distribution of space charge, improve the insulating properties of material
Can, while be combined with corrosion-resistant agent, play a part of corrosion resistant, inhibition.Fire retardant has higher oxygen index (OI), has with each component
Machine combines, and good flame retardation effect, strengthens the security performance of buried cable, acetone is organic solvent.
The present invention is organically combined by various materials, is played made from the cooperative effect of each component for buried cable
Erosion resisting insulation material, can effectively suppress the space charge accumulation in cable insulation material, corrosion-resistant and excellent insulating property,
Dielectric constant is below 1.5.Meanwhile exist with good waterproof, fire resistance, good mechanical performance, tensile strength
More than 23.5MPa, elongation at break is more than 520%, excellent combination property.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below to the skill of the embodiment of the present invention
Art scheme is clearly and completely described.Obviously, described embodiment is the part of the embodiment of the present invention, rather than entirely
The embodiment in portion.Based on described embodiments of the invention, every other implementation that those of ordinary skill in the art are obtained
Example, belongs to the scope of protection of the invention.
Embodiment one
A kind of erosion resisting insulation material for buried cable, comprising component and its content be:The parts by weight of epoxy resin 20, gather
The parts by weight of tetrafluoroethene 12, the parts by weight of APTES 3.8, the parts by weight of nano-oxide 12, polydiene base
The parts by weight of third alkyl dimethyl ammonium chloride 4.5, the parts by weight of Kynoar 17, the parts by weight of DMAC N,N' dimethyl acetamide 35, methane-siliconic acid
The parts by weight of sodium 6.7, the parts by weight of poly-aspartate 8.9, the parts by weight of styrene 3.4, fire retardant DDP3.3 parts by weight, the weight of acetone 20
Part, the parts by weight of water 40.
The nano-oxide is nano magnesia, nano silicon, the mixture of nano titanium oxide, and weight ratio is received
Rice magnesia:Nano silicon:Nano titanium oxide is 4:3:3.
A kind of preparation method of erosion resisting insulation material for buried cable, is comprised the following steps:
1)The nano-oxide of 12 parts by weight is placed in 80 DEG C of vacuum drying chambers after drying 13h, mixed with the acetone of 20 parts by weight
Close, add the APTES of 3.8 parts by weight, be placed in magnetic stirring apparatus and stir, in 20 DEG C -25 DEG C of bar
Under part, rotating speed 300r/min, mixing time 2h, filter, filtrate is dried into 6h in 75 DEG C of baking ovens, grind, obtain surface
Modified nano-oxide powder;
2)It is placed in by the Kynoar of 17 parts by weight, by the DMA of 35 parts by weight in reactor, is passed through nitrogen
Gas, temperature of reaction kettle is controlled at 90 DEG C, speed of agitator 200r/min, stir 2h, obtain mixture one;
3)By the epoxy resin of 20 parts by weight, the polytetrafluoroethylene (PTFE) of 12 parts by weight, 4.5 parts by weight the dimethyl chloride of polydiene base third
Change the water mixing of ammonium, 40 parts by weight, be placed on magnetic stirring apparatus, under conditions of 20 DEG C -25 DEG C, stir 4h, mixing speed is
600r/min, obtain mixture two;
4)To step 3)Step 1 is added in obtained mixing two)Obtained nano-oxide powder and step 2)Obtained mixing
Thing one, is placed in banbury and is kneaded 10min, and melting temperature is 115 DEG C, obtains a mixture;
5)To step 4)Sodium methyl silicate, the poly- asparagus fern ammonia of 8.9 parts by weight of 6.7 parts by weight are added in an obtained mixture
Acid, the fire retardant DDP of the styrene of 3.4 parts by weight, 3.3 parts by weight, continue to be kneaded 40min in banbury, melting temperature is
115 DEG C, produce.
Embodiment two
A kind of erosion resisting insulation material for buried cable, comprising component and its content be:The parts by weight of epoxy resin 21, gather
The parts by weight of tetrafluoroethene 13, the parts by weight of 3- glycydoxies trimethoxy silane 4, the parts by weight of nano-oxide 13,
The parts by weight of the third alkyl dimethyl ammonium chloride of polydiene base 4.6, the parts by weight of Kynoar 18, the parts by weight of DMAC N,N' dimethyl acetamide 36,
The parts by weight of sodium methyl silicate 6.8, the parts by weight of hexa 9, the parts by weight of styrene 3.5, fire retardant DOPO3.4 parts by weight,
The parts by weight of acetone 21, the parts by weight of water 41.
The nano-oxide is nano magnesia, nano silicon, the mixture of nano titanium oxide, and weight ratio is received
Rice magnesia:Nano silicon:Nano titanium oxide is 4:3:3.
A kind of preparation method of erosion resisting insulation material for buried cable, is comprised the following steps:
1)The nano-oxide of 13 parts by weight is placed in 80 DEG C of vacuum drying chambers after drying 13.5h, the acetone with 21 parts by weight
Mixing, the 3- glycydoxy trimethoxy silanes of 4 parts by weight are added, is placed in magnetic stirring apparatus and stirs, 20
Under conditions of DEG C -25 DEG C, rotating speed 350r/min, mixing time 2.5h, filter, filtrate is dried in 75 DEG C of baking ovens
6.5h, grinding, obtain the nano-oxide powder of surface modification;
2)It is placed in by the Kynoar of 18 parts by weight, by the DMA of 36 parts by weight in reactor, is passed through nitrogen
Gas, temperature of reaction kettle is controlled at 95 DEG C, speed of agitator 250r/min, stir 2.5h, obtain mixture one;
3)By the epoxy resin of 21 parts by weight, the polytetrafluoroethylene (PTFE) of 13 parts by weight, 4.6 parts by weight the dimethyl chloride of polydiene base third
Change the water mixing of ammonium, 41 parts by weight, be placed on magnetic stirring apparatus, under conditions of 20 DEG C -25 DEG C, stir 4.5h, mixing speed
For 650r/min, mixture two is obtained;
4)To step 3)Step 1 is added in obtained mixing two)Obtained nano-oxide powder and step 2)Obtained mixing
Thing one, is placed in banbury and is kneaded 11min, and melting temperature is 120 DEG C, obtains a mixture;
5)To step 4)Sodium methyl silicate, the hexa-methylene four of 9 parts by weight of 6.8 parts by weight are added in an obtained mixture
Amine, the styrene of 3.4 parts by weight, the fire retardant DOPO of 3.3 parts by weight, continue to be kneaded 45min in banbury, melting temperature is
120 DEG C, produce.
Embodiment three
A kind of erosion resisting insulation material for buried cable, comprising component and its content be:The parts by weight of epoxy resin 23, gather
The parts by weight of tetrafluoroethene 14, the parts by weight of APTES 4.2, the parts by weight of nano-oxide 14, polydiene base
The parts by weight of third alkyl dimethyl ammonium chloride 4.8, the parts by weight of Kynoar 19, the parts by weight of DMAC N,N' dimethyl acetamide 37, methane-siliconic acid
The parts by weight of sodium 6.9, the parts by weight of hexa 9.2, the parts by weight of hydroquinones 3.7, the parts by weight of tricresyl phosphate 3.6, third
The parts by weight of ketone 22, the parts by weight of water 43.
The nano-oxide is nano magnesia, nano silicon, the mixture of nano titanium oxide, and weight ratio is received
Rice magnesia:Nano silicon:Nano titanium oxide is 4:3:3.
A kind of preparation method of erosion resisting insulation material for buried cable, is comprised the following steps:
1)The nano-oxide of 14 parts by weight is placed in 80 DEG C of vacuum drying chambers after drying 14h, mixed with the acetone of 22 parts by weight
Close, add the APTES of 4.2 parts by weight, be placed in magnetic stirring apparatus and stir, in 20 DEG C -25 DEG C of bar
Under part, rotating speed 400r/min, mixing time 3h, filter, filtrate is dried into 7h in 80 DEG C of baking ovens, grind, obtain surface
Modified nano-oxide powder;
2)It is placed in by the Kynoar of 19 parts by weight, by the DMA of 37 parts by weight in reactor, is passed through nitrogen
Gas, temperature of reaction kettle is controlled at 100 DEG C, speed of agitator 300r/min, stir 3h, obtain mixture one;
3)By the epoxy resin of 23 parts by weight, the polytetrafluoroethylene (PTFE) of 14 parts by weight, 4.8 parts by weight the dimethyl chloride of polydiene base third
Change the water mixing of ammonium, 43 parts by weight, be placed on magnetic stirring apparatus, under conditions of 20 DEG C -25 DEG C, stir 5h, mixing speed is
700r/min, obtain mixture two;
4)To step 3)Step 1 is added in obtained mixing two)Obtained nano-oxide powder and step 2)Obtained mixing
Thing one, is placed in banbury and is kneaded 12min, and melting temperature is 125 DEG C, obtains a mixture;
5)To step 4)Sodium methyl silicate, the hexa-methylene of 9.2 parts by weight of 6.9 parts by weight are added in an obtained mixture
Tetramine, the hydroquinones of 3.7 parts by weight, the tricresyl phosphate of 3.6 parts by weight, continue to be kneaded 50min in banbury, be kneaded
Temperature is 125 DEG C, is produced.
Example IV
A kind of erosion resisting insulation material for buried cable, comprising component and its content with embodiment three.
A kind of preparation method of erosion resisting insulation material for buried cable, is comprised the following steps:
1)The nano-oxide of 14 parts by weight is placed in 80 DEG C of vacuum drying chambers after drying 14h, mixed with the acetone of 22 parts by weight
Close, add the APTES of 4.2 parts by weight, be placed in magnetic stirring apparatus and stir, in 20 DEG C -25 DEG C of bar
Under part, rotating speed 400r/min, mixing time 3h, filter, filtrate is dried into 8h in 80 DEG C of baking ovens, grind, obtain surface
Modified nano-oxide powder;
2)It is placed in by the Kynoar of 19 parts by weight, by the DMA of 37 parts by weight in reactor, is passed through nitrogen
Gas, temperature of reaction kettle is controlled at 100 DEG C, speed of agitator 300r/min, stir 3h, obtain mixture one;
3)By the epoxy resin of 22 parts by weight, the polytetrafluoroethylene (PTFE) of 14 parts by weight, 4.8 parts by weight the dimethyl chloride of polydiene base third
Change the water mixing of ammonium, 43 parts by weight, be placed on magnetic stirring apparatus, under conditions of 20 DEG C -25 DEG C, stir 5h, mixing speed is
800r/min, obtain mixture two;
4)To step 3)Step 1 is added in obtained mixing two)Obtained nano-oxide powder and step 2)Obtained mixing
Thing one, is placed in banbury and is kneaded 15min, and melting temperature is 130 DEG C, obtains a mixture;
5)To step 4)Sodium methyl silicate, the hexa-methylene of 9.2 parts by weight of 6.9 parts by weight are added in an obtained mixture
Tetramine, the hydroquinones of 3.7 parts by weight, the tricresyl phosphate of 3.6 parts by weight, continue to be kneaded 60min in banbury, be kneaded
Temperature is 130 DEG C, is produced.
Embodiment five
A kind of erosion resisting insulation material for buried cable, comprising component and its content be:The parts by weight of epoxy resin 25, gather
The parts by weight of tetrafluoroethene 15, the parts by weight of 3- glycydoxies trimethoxy silane 4.5, the weight of nano-oxide 15
Part, the parts by weight of the third alkyl dimethyl ammonium chloride of polydiene base 5, the parts by weight of Kynoar 19, the parts by weight of DMAC N,N' dimethyl acetamide 39,
The parts by weight of potassium methyl silicate 7.0, the parts by weight of corrosion-resistant agent 9.2, the parts by weight of hydroquinones 4, the parts by weight of fire retardant 3.8, acetone 24
Parts by weight, the parts by weight of water 48.
The nano-oxide is nano magnesia, nano silicon, the mixture of nano titanium oxide, and weight ratio is received
Rice magnesia:Nano silicon:Nano titanium oxide is 4:3:3.
The corrosion-resistant agent is the mixture of poly-aspartate and hexa, and weight compares poly-aspartate:Six is sub-
Tetramine is 3:7.
The fire retardant is fire retardant DDP, fire retardant DOPO, tricresyl phosphate, and weight is than fire retardant DDP:Fire retardant
DOPO:Tricresyl phosphate is 3:2:5.
A kind of preparation method of erosion resisting insulation material for buried cable, is comprised the following steps:
1)The nano-oxide of 15 parts by weight is placed in 80 DEG C of vacuum drying chambers after drying 14h, mixed with the acetone of 24 parts by weight
Close, add the 3- glycydoxy trimethoxy silanes of 4.5 parts by weight, be placed in magnetic stirring apparatus and stir, 20
Under conditions of DEG C -25 DEG C, rotating speed 350r/min, mixing time 3h, filter, filtrate is dried into 7h in 75 DEG C of baking ovens, ground
Mill, obtain the nano-oxide powder of surface modification;
2)It is placed in by the Kynoar of 19 parts by weight, by the DMA of 39 parts by weight in reactor, is passed through nitrogen
Gas, temperature of reaction kettle is controlled at 110 DEG C, speed of agitator 250r/min, stir 3h, obtain mixture one;
3)By the epoxy resin of 25 parts by weight, the polytetrafluoroethylene (PTFE) of 15 parts by weight, 5 parts by weight the dimethylammonium chloride of polydiene base third
The water mixing of ammonium, 48 parts by weight, is placed on magnetic stirring apparatus, under conditions of 20 DEG C -25 DEG C, stirs 5h, mixing speed is
700r/min, obtain mixture two;
4)To step 3)Step 1 is added in obtained mixing two)Obtained nano-oxide powder and step 2)Obtained mixing
Thing one, is placed in banbury and is kneaded 13min, and melting temperature is 120 DEG C, obtains a mixture;
5)To step 4)Added in an obtained mixture sodium methyl silicates of 7.0 parts by weight, 9.2 parts by weight it is corrosion-resistant
Agent, the hydroquinones of 4 parts by weight, the fire retardant of 3.8 parts by weight, continue to be kneaded 50min, melting temperature 120 in banbury
DEG C, produce.
Embodiment six
A kind of erosion resisting insulation material for buried cable, including component and its content be with embodiment five, but with implementation
Unlike example five, the fire retardant that the present embodiment uses is fire retardant DDP.
This is used for the preparation method of the erosion resisting insulation material of buried cable with embodiment five.
Embodiment seven
A kind of erosion resisting insulation material for buried cable, comprising component and its content be:The parts by weight of epoxy resin 27, gather
The parts by weight of tetrafluoroethene 16, the parts by weight of 3- glycydoxies trimethoxy silane 5.2, the weight of nano-oxide 16
Part, the parts by weight of the third alkyl dimethyl ammonium chloride of polydiene base 5.4, the parts by weight of Kynoar 20, the weight of DMAC N,N' dimethyl acetamide 42
Part, the parts by weight of sodium methyl silicate 7.1, the parts by weight of poly-aspartate 9.4, the parts by weight of styrene 4.6, the parts by weight of fire retardant 4.1, third
The parts by weight of ketone 25, the parts by weight of water 54.
The nano-oxide is nano magnesia, nano silicon, the mixture of nano titanium oxide, and weight ratio is received
Rice magnesia:Nano silicon:Nano titanium oxide is 4:3:3.
The fire retardant is fire retardant DDP, fire retardant DOPO, tricresyl phosphate, and weight is than fire retardant DDP:Fire retardant
DOPO:Tricresyl phosphate is 3:2:5.
A kind of preparation method of erosion resisting insulation material for buried cable, is comprised the following steps:
1)The nano-oxide of 16 parts by weight is placed in 80 DEG C of vacuum drying chambers after drying 14h, mixed with the acetone of 25 parts by weight
Close, add the 3- glycydoxy trimethoxy silanes of 5.2 parts by weight, be placed in magnetic stirring apparatus and stir, 20
Under conditions of DEG C -25 DEG C, rotating speed 300r/min, mixing time 3h, filter, filtrate dried into 7.5h in 80 DEG C of baking ovens,
Grinding, obtain the nano-oxide powder of surface modification;
2)It is placed in by the Kynoar of 20 parts by weight, by the DMA of 42 parts by weight in reactor, is passed through nitrogen
Gas, temperature of reaction kettle is controlled at 115 DEG C, speed of agitator 250r/min, stir 3h, obtain mixture one;
3)By the epoxy resin of 27 parts by weight, the polytetrafluoroethylene (PTFE) of 16 parts by weight, 5.4 parts by weight the dimethyl chloride of polydiene base third
Change the water mixing of ammonium, 54 parts by weight, be placed on magnetic stirring apparatus, under conditions of 20 DEG C -25 DEG C, stir 5.5h, mixing speed
For 750r/min, mixture two is obtained;
4)To step 3)Step 1 is added in obtained mixing two)Obtained nano-oxide powder and step 2)Obtained mixing
Thing one, is placed in banbury and is kneaded 14min, and melting temperature is 125 DEG C, obtains a mixture;
5)To step 4)Sodium methyl silicate, the poly- asparagus fern ammonia of 9.4 parts by weight of 7.1 parts by weight are added in an obtained mixture
Acid, the fire retardant DOPO of the styrene of 4.6 parts by weight, 4.1 parts by weight, continue to be kneaded 55min in banbury, melting temperature is
125 DEG C, produce.
Embodiment eight
A kind of erosion resisting insulation material for buried cable, comprising component and its content be:The parts by weight of epoxy resin 28, gather
The parts by weight of tetrafluoroethene 18, the parts by weight of 3- glycydoxies trimethoxy silane 5.5, the weight of nano-oxide 17
Part, the parts by weight of the third alkyl dimethyl ammonium chloride of polydiene base 5.6, the parts by weight of Kynoar 22, the weight of DMAC N,N' dimethyl acetamide 44
Part, the parts by weight of potassium methyl silicate 7.2, the parts by weight of corrosion-resistant agent 9.6, the parts by weight of styrene 4.7, the parts by weight of fire retardant 4.2, acetone
26 parts by weight, the parts by weight of water 55.
The nano-oxide is nano magnesia, nano silicon, the mixture of nano titanium oxide, and weight ratio is received
Rice magnesia:Nano silicon:Nano titanium oxide is 4:3:3.
The corrosion-resistant agent is the mixture of poly-aspartate and hexa, and weight compares poly-aspartate:Six is sub-
Tetramine is 3:7.
The fire retardant is fire retardant DDP, fire retardant DOPO, tricresyl phosphate, and weight is than fire retardant DDP:Fire retardant
DOPO:Tricresyl phosphate is 3:2:5.
A kind of preparation method of erosion resisting insulation material for buried cable, is comprised the following steps:
1)The nano-oxide of 28 parts by weight is placed in 80 DEG C of vacuum drying chambers after drying 14h, mixed with the acetone of 26 parts by weight
Close, add the 3- glycydoxy trimethoxy silanes of 5.5 parts by weight, be placed in magnetic stirring apparatus and stir, 20
Under conditions of DEG C -25 DEG C, rotating speed 400r/min, mixing time 4h, filter, filtrate is dried into 8h in 80 DEG C of baking ovens, ground
Mill, obtain the nano-oxide powder of surface modification;
2)It is placed in by the Kynoar of 22 parts by weight, by the DMA of 44 parts by weight in reactor, is passed through nitrogen
Gas, temperature of reaction kettle is controlled at 120 DEG C, speed of agitator 300r/min, stir 3h, obtain mixture one;
3)By the epoxy resin of 28 parts by weight, the polytetrafluoroethylene (PTFE) of 18 parts by weight, 5.6 parts by weight the dimethyl chloride of polydiene base third
Change the water mixing of ammonium, 55 parts by weight, be placed on magnetic stirring apparatus, under conditions of 20 DEG C -25 DEG C, stir 6h, mixing speed is
800r/min, obtain mixture two;
4)To step 3)Step 1 is added in obtained mixing two)Obtained nano-oxide powder and step 2)Obtained mixing
Thing one, is placed in banbury and is kneaded 15min, and melting temperature is 130 DEG C, obtains a mixture;
5)To step 4)Added in an obtained mixture potassium methyl silicates of 7.2 parts by weight, 9.6 parts by weight it is corrosion-resistant
Agent, the styrene of 4.7 parts by weight, the fire retardant DOPO of 4.2 parts by weight, continue to be kneaded 60min in banbury, melting temperature is
130 DEG C, produce.
Comparative example one
A kind of erosion resisting insulation material for buried cable, including component and its content with embodiment two, but and embodiment
Unlike two, the comparative example is not added with Kynoar and DMA.
This is used for the erosion resisting insulation material of buried cable, comprising the step of with embodiment two, but unlike embodiment two,
The comparative example lacks step 2), i.e., by the mixing of Kynoar and DMA.
Comparative example two
A kind of erosion resisting insulation material for buried cable, including component and its content with embodiment three, but and embodiment
Unlike three, the comparative example is not added with waterproofing agent and inhibitor.
This is used for the erosion resisting insulation material of buried cable, comprising the step of with embodiment three, the comparative example be not added with waterproofing agent
And inhibitor.
Comparative example three
A kind of erosion resisting insulation material for buried cable, including component and its content with embodiment five, but and embodiment
Unlike five, the comparative example is not added with corrosion-resistant agent.
This be used for buried cable erosion resisting insulation material, comprising the step of be not added with corrosion-resistant with embodiment five, the comparative example
Agent.
Comparative example four
A kind of erosion resisting insulation material for buried cable, including component and its content with embodiment seven, but and embodiment
Unlike seven, the comparative example lacks coupling agent.
This is used for the erosion resisting insulation material of buried cable, comprising the step of with embodiment seven, but unlike embodiment seven,
The comparative example lacks step 1), i.e., not by nano-oxide with coupling agent modified.
Performance test:
1)Measuring mechanical property
Deployed mixed liquor is poured into mould, sample is obtained after solidifying at room temperature.Its specification is:A length of 30 mm, wide lO
Mm, thickness are 100 μm.Stress-strain test is carried out to enamelled coating using U.S.'s Mei Tesi CMT5305 universal testing machines, strain rate is
10mm/min。
Tensile strength be sample when being pulled off on puller system, the load that is born on unit cross-sectional area uses N/mm2Represent,
Calculation formula is as shown in 1-1:
P=F/S (1-1)
In formula:The tensile strength of the samples of P mono-, N/mm2;
Power suffered on rupture cross section, N during F- sample fractures;
The area in S- sample fractures face, mm2。
Wherein, 1MPa=1N/mm2
Elongation at break is the ratio of the elongation and raw footage when sample is pulled off, and is expressed as a percentage, calculation formula such as 1-2 institutes
Show:
E=(L1-L0)/L0 (1-2)
In formula:The elongation at breaks of E mono-, %;
L0One sample raw footage, mm;
L1The length of part of the force, mm during-sample fracture.
2)Water resistance test
Mixed liquor 30g is taken to dry in an oven in glass culture dish, film is made.The water-fast of film is characterized using water absorption rate
Property, film is cut into 15mm × 15mm square sample, weighs sample mass(It is accurate to 0.001g).Put it into and be equipped with
In the culture dish of distilled water, distilled water did not had the upper surface of film, was taken out after soaking 24h at room temperature.Gently wiped with filter paper
Fall the moisture of film surface, and weigh immediately.According to formula 2-1, the water absorption rate of film is calculated, each sample testing 3 times, make even
Average.
W=(m1-m0)/m0×100% (2-1)
In formula, the water absorption rate of W- films, %;
m0The initial mass of-sample, g;
m1Quality after the water suction of-sample, g.
3)Insulating properties are tested
Deployed mixed liquor is poured into mould, sample is obtained after solidifying at room temperature.Using capacitance measuring instrument, sample is entered
Row on-line testing, pass through electric capacity calculation formula(3-1), the dielectric constant of insulation can be calculated.
ε=Cx/Co (3-1)
In formula:The increased multiple of ε-capacitance, i.e. relative dielectric constant;
Cx- capacitor two-plate is full of electric capacity during medium;
CoElectric capacity when-capacitor two-plate is vacuum.
Specific insulation test is carried out using ZC-36 types megger, Polyethylene Nanocomposites are prepared into 100
The mm of the mm of mm × 100 × 1 sample, sticks aluminium foil, test voltage is 500 V by sample.Using three
Electrode system, composite is measured using megger, measured value is volume resistance, can be according to formula (3-2)
Calculate the specific insulation of sample.Formula is as follows:
ρv=Rvπ(D1+g)/4h (3-2)
In formula:ρv- specific insulation, m;Rv- volume resistance,;
D1- guard electrode diameter, m;G-by the distance between guard electrode and guard electrode, m;
The thickness of h-test sample, m.
4)Corrosion-resistant test
Mixed liquor 30g is taken to dry in an oven in glass culture dish, film sample is made.Three clean beakers are taken, respectively
The hydrochloric acid of 10% concentration and the NaOH solution of 10% concentration are prepared, sample is immersed respectively in the solution prepared, keeps sealing ring
Behind border 45 days, the corrosion condition on sample viewing film surface is taken out.
The Measurement results such as table 1 of embodiment one to eight and comparative example one to five:
The test result of the embodiment of table 1 and comparative example
Stretching is strong Spend MPa | Extension at break Rate % | It is water-fast Property | Dielectric is normal Number | Specific insulation(1015 Ω·m) | Acid resistance | Alkali resistance | |
Embodiment one | 23.5 | 520.7 | 41 | 1.5 | 4.2 | Without elephant skin, bubble, peel off now As | Without elephant skin, bubble, peeling phenomenon |
Embodiment two | 24.2 | 527.6 | 40 | 1.5 | 4.4 | Without elephant skin, bubble, peel off now As | Without elephant skin, bubble, peeling phenomenon |
Embodiment three | 25.9 | 543.6 | 36 | 1.4 | 4.8 | Without elephant skin, bubble, peel off now As | Without elephant skin, bubble, peeling phenomenon |
Example IV | 24.7 | 540.8 | 34 | 1.4 | 4.7 | Without elephant skin, bubble, peel off now As | Without elephant skin, bubble, peeling phenomenon |
Embodiment five | 29.4 | 589.3 | 32 | 1.2 | 5.5 | Without elephant skin, bubble, peel off now As | Without elephant skin, bubble, peeling phenomenon |
Embodiment six | 27.4 | 573.9 | 35 | 1.3 | 5.0 | Without elephant skin, bubble, peel off now As | Without elephant skin, bubble, peeling phenomenon |
Embodiment seven | 27.2 | 577.9 | 37 | 1.3 | 5.1 | Without elephant skin, bubble, peel off now As | Without elephant skin, bubble, peeling phenomenon |
Embodiment eight | 28.3 | 580.3 | 35 | 1.3 | 5.4 | Without elephant skin, bubble, peel off now As | Without elephant skin, bubble, peeling phenomenon |
Comparative example one | 15.2 | 436.3 | 45 | 2.7 | 3.2 | A large amount of elephant skin, bubble, peelings Phenomenon | A large amount of elephant skin, bubble, peeling phenomenons |
Comparative example two | 17.3 | 440.5 | 58 | 2.5 | 2.6 | A large amount of elephant skin, bubble, peelings Phenomenon | A large amount of elephant skin, bubble, peeling phenomenons |
Comparative example three | 18.4 | 451.4 | 44 | 2.5 | 2.7 | A large amount of elephant skin, bubble, peelings Phenomenon | A large amount of elephant skin, bubble, peeling phenomenons |
Comparative example four | 17.6 | 427.3 | 50 | 2.8 | 3.0 | A small amount of elephant skin, bubble, peeling Phenomenon | A small amount of elephant skin, bubble, peeling phenomenon |
As can be seen from Table 1:1)Embodiment one to eight shows good combination property:With excellent mechanical performance, draw
Intensity is stretched in more than 23.5MPa, can reach 29.4MPa, elongation at break is water-fast, resistant to chemical etching more than 520%, absolutely
Edge excellent performance, dielectric constant meet the technical requirements of buried cable below 1.5.2)Embodiment one to four is using fire-retardant
Agent and corrosion-resistant agent are a kind of single material, embodiment five to eight, use fire retardant and corrosion-resistant agent as two or three
The mixture of material, the combination property of the material of embodiment five to eight are better than embodiment one to four;Example IV and embodiment three-phase
Than material composition is identical with content, and the technical parameter of preparation method is different, and the performance of embodiment three is better than example IV.3)It is right
Ratio one lacks Kynoar and DMA compared with embodiment two;Comparative example two compared with embodiment three,
Lack waterproofing agent and inhibitor;Comparative example three lacks corrosion-resistant agent compared with embodiment five;Comparative example four and the phase of embodiment seven
Than nano-oxide is not modified;The performance of the material of comparative example one to four is poorer than embodiment one to eight.Epoxy resin with
Polytetrafluoroethylene (PTFE) and Kynoar collective effect, modified nano-oxide increase intermolecular compatibility, and various auxiliary agents exist
While improving material property, organically combined with each component, interaction, the combination property of common reinforcing material.Illustrate each original
It is complementary between material, lacks any raw material, the performance of insulating materials will be decreased obviously.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, this area is common
Other modifications or equivalent substitution that technical staff is made to technical scheme, without departing from technical solution of the present invention
Spirit and scope, all should cover among scope of the presently claimed invention.
Claims (10)
- A kind of 1. erosion resisting insulation material for buried cable, it is characterised in that:Comprising component and its content be:Asphalt mixtures modified by epoxy resin Fat 20-28 parts by weight, polytetrafluoroethylene (PTFE) 12-18 parts by weight, coupling agent 3.8-5.5 parts by weight, nano-oxide 12-17 weight Part, polydiene base the third alkyl dimethyl ammonium chloride 4.5-5.6 parts by weight, Kynoar 17-22 parts by weight, DMAC N,N' dimethyl acetamide 35-44 parts by weight, waterproofing agent 6.7-7.2 parts by weight, corrosion-resistant agent 8.9-9.6 parts by weight, inhibitor 3.4-4.7 parts by weight, resistance Fire agent 3.3-4.2 parts by weight, acetone 20-26 parts by weight, water 40-55 parts by weight.
- A kind of 2. erosion resisting insulation material for buried cable as claimed in claim 1, it is characterised in that:The coupling agent For APTES or 3- glycydoxy trimethoxy silanes.
- A kind of 3. erosion resisting insulation material for buried cable as claimed in claim 1, it is characterised in that:The nano oxygen Compound is nano magnesia, nano silicon, the mixture of nano titanium oxide, and weight compares nano magnesia:Nano-silica SiClx:Nano titanium oxide is 4:3:3.
- A kind of 4. erosion resisting insulation material for buried cable as claimed in claim 1, it is characterised in that:The waterproofing agent For sodium methyl silicate or potassium methyl silicate.
- A kind of 5. erosion resisting insulation material for buried cable as claimed in claim 1, it is characterised in that:It is described corrosion-resistant Agent is one or both of poly-aspartate, hexa.
- A kind of 6. erosion resisting insulation material for buried cable as claimed in claim 5, it is characterised in that:It is described corrosion-resistant Agent is the mixture of poly-aspartate and hexa, and weight compares poly-aspartate:Hexa is 3:7.
- A kind of 7. erosion resisting insulation material for buried cable as claimed in claim 1, it is characterised in that:The inhibitor For styrene or hydroquinones.
- A kind of 8. erosion resisting insulation material for buried cable as claimed in claim 1, it is characterised in that:The fire retardant For the one or more in fire retardant DDP, fire retardant DOPO, tricresyl phosphate.
- A kind of 9. erosion resisting insulation material for buried cable as claimed in claim 8, it is characterised in that:The fire retardant For fire retardant DDP, fire retardant DOPO, tricresyl phosphate mixture, weight is than fire retardant DDP:Fire retardant DOPO:Tricresyl phosphate Toluene ester is 3:2:5.
- 10. a kind of preparation method of erosion resisting insulation material for buried cable as described in claim 1-9 any one, It is characterized in that:Comprise the following steps:The nano-oxide of 12-17 parts by weight is placed in 80 DEG C of vacuum drying chambers after drying 13-14h, with 20-26 parts by weight Acetone mixes, and adds the coupling agent of 3.8-5.5 parts by weight, is placed in magnetic stirring apparatus and stirs, under conditions of 20 DEG C -25 DEG C, Rotating speed is 300-400r/min, mixing time 2-4h, filters, filtrate is dried into 6-8h in 75-80 DEG C of baking oven, grinds, obtains The nano-oxide powder being modified to surface;It is placed in reactor, leads to by the Kynoar of 17-22 parts by weight, by the DMA of 35-44 parts by weight Enter nitrogen, temperature of reaction kettle is controlled at 90-120 DEG C, speed of agitator 200-300r/min, stir 2-3h, obtain mixture One;3)By the epoxy resin of 20-28 parts by weight, the polytetrafluoroethylene (PTFE) of 12-18 parts by weight, 4.5-5.6 parts by weight polydiene base The water mixing of third alkyl dimethyl ammonium chloride, 40-55 parts by weight, is placed on magnetic stirring apparatus, under conditions of 20 DEG C -25 DEG C, stirring 4-6h, mixing speed 600-800r/min, obtain mixture two;To step 3)Step 1 is added in obtained mixing two)Obtained nano-oxide powder and step 2)Obtained mixture One, it is placed in banbury and is kneaded 10-15min, melting temperature is 115-130 DEG C, obtains a mixture;To step 4)Added in an obtained mixture waterproofing agents of 6.7-7.2 parts by weight, 8.9-9.6 parts by weight it is corrosion-resistant Agent, the inhibitor of 3.4-4.7 parts by weight, the fire retardant of 3.3-4.2 parts by weight, continue to be kneaded 40-60min in banbury, mix It is 115-130 DEG C to refine temperature, is produced.
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CN107857976A (en) * | 2017-11-30 | 2018-03-30 | 国网河南省电力公司南阳供电公司 | A kind of electric power infrastructure erosion resisting insulation material |
CN108695754A (en) * | 2018-06-27 | 2018-10-23 | 国网河南省电力公司经济技术研究院 | 220kV substation secondary device prefabricated cabins |
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CN115960465A (en) * | 2023-01-03 | 2023-04-14 | 广东电网有限责任公司中山供电局 | Polymer insulating material and preparation method and application thereof |
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