CN112940443B - Sealing putty for electric power, preparation method and application - Google Patents
Sealing putty for electric power, preparation method and application Download PDFInfo
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- CN112940443B CN112940443B CN202110047860.0A CN202110047860A CN112940443B CN 112940443 B CN112940443 B CN 112940443B CN 202110047860 A CN202110047860 A CN 202110047860A CN 112940443 B CN112940443 B CN 112940443B
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- 238000007789 sealing Methods 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 89
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 69
- 239000010455 vermiculite Substances 0.000 claims abstract description 69
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 69
- 239000012779 reinforcing material Substances 0.000 claims abstract description 39
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- 239000002131 composite material Substances 0.000 claims abstract description 33
- 238000002156 mixing Methods 0.000 claims abstract description 29
- 238000000227 grinding Methods 0.000 claims abstract description 27
- 229920005989 resin Polymers 0.000 claims abstract description 27
- 239000011347 resin Substances 0.000 claims abstract description 27
- 238000007873 sieving Methods 0.000 claims abstract description 27
- 239000003607 modifier Substances 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 239000011159 matrix material Substances 0.000 claims abstract description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 28
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 24
- 239000011780 sodium chloride Substances 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 13
- 229920001568 phenolic resin Polymers 0.000 claims description 13
- 239000005011 phenolic resin Substances 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 11
- 229920003043 Cellulose fiber Polymers 0.000 claims description 9
- 229920002748 Basalt fiber Polymers 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims description 7
- CTNICFBTUIFPOE-UHFFFAOYSA-N 2-(4-hydroxyphenoxy)ethane-1,1-diol Chemical compound OC(O)COC1=CC=C(O)C=C1 CTNICFBTUIFPOE-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 abstract description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 6
- 239000011707 mineral Substances 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 239000012784 inorganic fiber Substances 0.000 abstract description 3
- 239000012744 reinforcing agent Substances 0.000 abstract description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 14
- 230000000903 blocking effect Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000011858 nanopowder Substances 0.000 description 4
- 239000011368 organic material Substances 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000004113 Sepiolite Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229910052901 montmorillonite Inorganic materials 0.000 description 2
- 239000005543 nano-size silicon particle Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229910052624 sepiolite Inorganic materials 0.000 description 2
- 235000019355 sepiolite Nutrition 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000759905 Camptotheca acuminata Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical group [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910003471 inorganic composite material Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/006—Additives being defined by their surface area
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a sealing putty for electric power and a preparation method and application thereof, wherein the sealing putty comprises a matrix material, a curing agent, a modifier and a reinforcing material, the matrix material is a mixture of organic resin and inorganic expansion mineral material, and the reinforcing material is an organic reinforcing agent or inorganic fiber material; uniformly mixing the modified vermiculite, the organic resin and the reinforcing material, and then stirring at 170 ℃ for reaction to obtain a composite material; grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample. The prepared sealing plugging material for electric power is used for plugging cable channels and open positions of patios in substations and converter stations. The invention can improve the expansion performance and the high temperature resistance of the material and meet the requirements of the cable pit construction environment on the fireproof material.
Description
Technical Field
The invention belongs to the technical field of power engineering, and particularly relates to a sealing putty for electric power.
Background
The opening positions of a transformer substation, a converter station, a cable pit, a courtyard and the like need a large amount of sealing plugging materials for filling. The sealing plugging material can seal the cable and the plugging material at normal temperature, so that moisture and small animals are prevented from entering the interior; when a fire disaster occurs, the sealing putty can expand to prevent the fire disaster from spreading.
In the field of fireproof blocking fortification, at present, fireproof material components of an extra-high voltage converter station and a transformer substation are fortified basically according to a standard temperature rise curve, and main combustible materials of the converter station and the transformer substation are insulating oil of equipment such as transformers, reactors and the like, and the extra-high voltage converter station and the transformer substation also comprise high polymer materials such as cables and the like. The combustible material has the characteristics of quick temperature rise, high temperature, difficult protection and the like once the fire disaster is caused. The highest temperature and the temperature rise speed of the two temperature rise curves are harsher than those of the standard temperature rise curves commonly used at present, and the requirements of electric power engineering on the fire resistance and the high-temperature expansion performance of the fire-proof sealing plugging material are more strict along with the comprehensive starting of national network fire protection promotion.
In the field of elastic expansion plugging, most domestic common elastic plugging materials are organic plugging materials, the difference between the durability and the high temperature resistance of the product is larger than that of similar products in foreign countries, the product needs to be replaced within 2-3 years, extremely high fire spreading risks exist, the product meeting the fire resistance limit of HC fire for 2.5-3 hours is basically monopoly by 3M and the foreign brand of Camptotheca acuminata, the price is more than 50 yuan/100 ml, and the product is 2-5 times different than that of the domestic product, but the foreign products simultaneously face the problem of insufficient expansion performance.
Disclosure of Invention
In order to overcome the defects that the sealing plugging material in the prior art is not high-temperature resistant and has poor expansion performance, the invention aims to provide the sealing plugging material for electric power, which has high-temperature resistance and high expansion performance.
In order to solve the technical problems, the invention adopts the following technical scheme: the sealing putty for the electric power comprises a matrix material, a curing agent, a modifier and a reinforcing material, wherein the matrix material is a mixture of organic resin and inorganic expansion mineral materials, and the reinforcing material is an organic reinforcing agent or an inorganic fiber material;
the base material is 85-95wt%, the curing agent is 1-5wt%, the modifier is 1-5wt% and the reinforcing material is 1-5wt% based on the total mass of all the raw materials.
Preferably, the organic resin is at least one of phenolic resin and polyurethane.
Preferably, the inorganic expansive mineral material is at least one of vermiculite, montmorillonite and sepiolite.
Preferably, the curing agent is at least one of 1,4 butanediol and hydroquinone dihydroxyethyl ether.
Preferably, the modifier is at least one of hydrochloric acid, sodium chloride and nano silicon dioxide.
Preferably, the reinforcing material is at least one of cellulose fiber, polyester fiber and basalt fiber.
A preparation method of a sealing putty for electric power, which comprises the following steps,
uniformly mixing the modified vermiculite, the organic resin and the reinforcing material, and then stirring at 170 ℃ for reaction to obtain a composite material;
grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample.
Preferably, the vermiculite is modified by fully stirring vermiculite and water in a container according to a mass ratio of 1:10, adding sodium chloride or hydrochloric acid, placing the mixture in a water bath with a temperature of 70-75 ℃ for stirring for 2 hours, cooling and filtering, washing the mixture with deionized water for multiple times, activating the mixture for 2 hours at a temperature of 110 ℃ by using an electrothermal constant-temperature blast drying oven, grinding and sieving the mixture to prepare the modified vermiculite.
The sealing plugging material for electric power, which is prepared by the preparation method, is applied to a transformer substation and a converter station, and is used for plugging cable ditches and open positions of courtyard in the transformer substation and the converter station.
The invention adopts the technical scheme and has the following beneficial effects:
1. according to the sealing plugging material for electric power, vermiculite can form a framework after being modified, and resin organic materials are interpenetrated. The unique interlayer expansion performance and high temperature resistance of vermiculite solve the problem that domestic plugging material has insufficient high temperature resistance and foreign organic plugging material has insufficient expansion performance. By controlling the content and the particle size of vermiculite, the expansion uniformity of the fireproof blocking material is ensured, the toughness of the fireproof blocking material is improved through the reinforced fiber, and the blocking material is prevented from cracking at high temperature.
2. According to the preparation method of the sealing plugging material for electric power, unexpanded vermiculite is modified and ground to prepare nano powder, the nano preparation mode of the vermiculite can ensure that the vermiculite is uniformly distributed in the organic plugging material and is combined with more organic functional groups, so that the expansion performance and the high temperature resistance of the material are improved, and the requirements of a cable trench construction environment on a fireproof material are met.
3. The sealing plugging material for electric power provided by the invention is applied to cable ditches of converter stations and substations, can avoid the problem of fire spreading of the plugging material, and can be widely applied to the fireproof fields of petrochemical industry, oil mining and the like.
The specific technical scheme and the beneficial effects of the invention will be described in detail in the following specific embodiments.
Detailed Description
The invention firstly provides a sealing putty for electric power, which comprises a matrix material, a curing agent, a modifier and a reinforcing material, wherein the matrix material is a mixture of organic resin and inorganic expansion mineral material, and the reinforcing material is an organic reinforcing agent or an inorganic fiber material.
The base material is 85-95wt%, the curing agent is 1-5wt%, the modifier is 1-5wt% and the reinforcing material is 1-5wt% based on the total mass of all the raw materials.
Wherein the organic resin is at least one of phenolic resin and polyurethane. The inorganic expansion mineral material is at least one of vermiculite, montmorillonite and sepiolite. The curing agent is at least one of 1,4 butanediol and hydroquinone dihydroxyethyl ether. The modifier is at least one of hydrochloric acid, sodium chloride and nano silicon dioxide. The reinforcing material is at least one of cellulose fiber, polyester fiber and basalt fiber.
The inorganic expansion mineral material is preferably vermiculite, the content of the vermiculite is 3-10wt% based on the total mass of all raw materials, and the content of the resin is 77-85wt%.
The invention also provides a preparation method of the sealing putty for electric power, which comprises the following steps:
uniformly mixing the modified vermiculite, the organic resin and the reinforcing material, and then stirring at 170 ℃ for reaction to obtain a composite material; grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample.
The vermiculite modifying method includes the steps of fully stirring vermiculite and water in a container according to a mass ratio of 1:10, adding sodium chloride or hydrochloric acid, placing the mixture in a water bath with a temperature of 70-75 ℃ for stirring for 2 hours, cooling and filtering, washing the mixture with deionized water for multiple times, activating the mixture for 2 hours at a temperature of 110 ℃ by using an electrothermal constant-temperature blast drying oven, grinding and sieving the mixture to prepare the modified vermiculite.
The modified vermiculite is expanded at high temperature, and the expansion multiple is not higher than 30 times; the modified vermiculite is prepared into nano powder through mechanical powder.
The invention also provides application of the sealing plugging material for electric power, which is prepared by the preparation method, in a transformer substation and a converter station, wherein the sealing plugging material for electric power is used for plugging cable ditches and open positions of a courtyard in the transformer substation and the converter station.
According to the invention, through modifying the vermiculite, the affinity of the vermiculite and the organic resin is improved, and the penetration of the organic material between vermiculite layers can be ensured. By controlling the content and the particle size of vermiculite, the expansion uniformity of the fireproof plugging material is ensured, the expansion performance of the sealing plugging material at high temperature is improved, and the cracking inhibition capability of the plugging material after high temperature is improved by fiber reinforcement; by the composite preparation process of vermiculite and resin, the fire resistance limit of the plugging material is improved, and the short plate with insufficient high temperature resistance and expansion performance of the existing plugging material can be solved.
The technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The specific experimental procedures or conditions are not noted in the examples and may be followed by the operations or conditions of conventional experimental procedures described in the literature in this field. The reagents or apparatus used were conventional reagent products commercially available without the manufacturer's knowledge.
Example 1
The embodiment provides a sealing putty for electric power, which comprises 85% of phenolic resin, 8% of unexpanded vermiculite, 5% of 1, 4-butanediol and 2% of cellulose fibers by the total mass of a base material, a curing agent, a modifier and a reinforcing material.
The preparation method of the sealing plugging material for electric power comprises the following steps,
sieving unexpanded vermiculite with 250 mesh sieve, modifying with HCl/NaCl, and grinding to specific surface area of 350g/cm 2 Uniformly mixing the modified vermiculite, the organic resin and the reinforcing material, and then stirring at 170 ℃ to react to obtain a composite material; will beThe prepared composite material is ground and sieved, added with a curing agent, uniformly mixed and placed in a drying oven at 180 ℃ to obtain a cured sample.
Example 2
The embodiment provides a sealing putty for electric power, which comprises 85% of phenolic resin, 8% of unexpanded vermiculite, 5% of 1, 4-butanediol and 2% of cellulose fibers by the total mass of a base material, a curing agent, a modifier and a reinforcing material.
The preparation method of the sealing plugging material for electric power comprises the following steps,
sieving unexpanded vermiculite with 250 mesh sieve, modifying with HCl/NaCl, expanding at 800 deg.C, grinding with expansion factor 10 times to specific surface area of 350Kg/m 2 Uniformly mixing the modified vermiculite, the organic resin and the reinforcing material, and then stirring at 170 ℃ to react to obtain a composite material; grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample.
Example 3
The embodiment provides a sealing putty for electric power, which comprises 85% of phenolic resin, 8% of unexpanded vermiculite, 5% of 1, 4-butanediol and 2% of cellulose fibers by the total mass of a base material, a curing agent, a modifier and a reinforcing material.
The preparation method of the sealing plugging material for electric power comprises the following steps,
sieving unexpanded vermiculite with 250 mesh sieve, modifying with HCl/NaCl, expanding at 800 deg.C, grinding with expansion factor 20 times to specific surface area of 350Kg/m 2 Uniformly mixing the modified vermiculite, the organic resin and the reinforcing material, and then stirring at 170 ℃ to react to obtain a composite material; grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample.
Example 4
The embodiment provides a sealing putty for electric power, which comprises 88% of phenolic resin, 5% of unexpanded vermiculite, 5% of 1, 4-butanediol and 2% of cellulose fibers by the total mass of a base material, a curing agent, a modifier and a reinforcing material.
The preparation method of the sealing plugging material for electric power comprises the following steps,
sieving unexpanded vermiculite with 250 mesh sieve, modifying with HCl/NaCl, expanding at 800 deg.C, grinding with expansion factor 20 times to specific surface area of 350Kg/m 2 Uniformly mixing the modified vermiculite, the organic resin and the reinforcing material, and then stirring at 170 ℃ to react to obtain a composite material; grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample.
Example 5
The embodiment provides a sealing putty for electric power, which comprises 88% of phenolic resin, 5% of unexpanded vermiculite, 5% of 1, 4-butanediol, 1% of basalt fiber and 1% of polyester fiber by the total mass of a base material, a curing agent, a modifier and a reinforcing material.
The preparation method of the sealing plugging material for electric power comprises the following steps,
sieving unexpanded vermiculite with 250 mesh sieve, modifying with HCl/NaCl, expanding at 800 deg.C, grinding with expansion factor 20 times to specific surface area of 350Kg/m 2 Uniformly mixing the modified vermiculite, the organic resin and the reinforcing material, and then stirring at 170 ℃ to react to obtain a composite material; grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample.
Example 6
The embodiment provides a sealing putty for electric power, which comprises 90% of phenolic resin, 5% of unexpanded vermiculite, 5% of hydroquinone dihydroxyethyl ether, 1% of basalt fiber and 1% of polyester fiber by the total mass of a base material, a curing agent, a modifier and a reinforcing material.
The preparation method of the sealing plugging material for electric power comprises the following steps,
sieving unexpanded vermiculite with 250 mesh sieve, modifying with HCl/NaCl, expanding at 800 deg.C, grinding with expansion factor 20 times to specific surface area350Kg/m 2 Uniformly mixing the modified vermiculite, the organic resin and the reinforcing material, and then stirring at 170 ℃ to react to obtain a composite material; grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample.
It will be appreciated by those skilled in the art that the cellulose fibers of the above embodiments may also be replaced with polyester fibers and basalt fibers, or any combination of two or more thereof. The phenolic resin may also be replaced by polyurethane or a mixture of both. The 1,4 butanediol can also be replaced by hydroquinone dihydroxyethyl ether or a mixture of the two.
Comparative example
The embodiment provides a sealing putty for electric power, which comprises 88% of phenolic resin, 5% of unexpanded vermiculite, 5% of 1, 4-butanediol and 2% of cellulose fibers by the total mass of a base material, a curing agent, a modifier and a reinforcing material.
The preparation method of the sealing plugging material for electric power comprises the following steps,
sieving unexpanded vermiculite with a 250-mesh sieve, sorting, uniformly mixing the vermiculite, organic resin and reinforcing material, and stirring at 170 ℃ to obtain a composite material; grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample.
Test examples
The test examples provided performance tests of the electric power seal plug prepared in examples 1 to 5 and comparative examples and the fireproof sealant produced by the company xili, specifically as follows,
the method for testing the expansion performance of the sealing plugging material for the electric power comprises the following steps: the sealing expansion plugging material is burnt at the high temperature of 1200 ℃ for 15min, and the thickness change rate is measured.
The method for testing the fire resistance of the sealing plugging material for electric power comprises the following steps: according to the national standards GB/T9978.1-2008 and GB/T26784-2011, a testing method and a temperature rise curve of a fireproof material are selected, the heat insulation and the integrity of the fireproof plate material are evaluated according to GB/T9978.8-2008, the fireproof performance of the fireproof blocking material is characterized by the average temperature of the material backboard after the fireproof limit is 1.5 hours, and the lower the temperature is, the better the fireproof performance of the material is shown; and simultaneously observing whether the fireproof blocking material has cracks.
TABLE 1 Performance test results of sealing plug for electric Power
The technical scheme of the invention has the following advantages:
1. the invention provides a sealing putty for electric power, which comprises a matrix material, a curing agent, a modifier and a reinforcing material. The sealing plugging material for the electric power comprises a matrix material, a curing agent, a modifier and a reinforcing material, wherein the matrix material is an organic-inorganic composite material, the curing agent is an organic curing agent such as 1, 4-butanediol, hydroquinone dihydroxyethyl ether and the like, the modifier is a chloride ion modifier or nano powder, and the reinforcing material is a fiber reinforcing material. By modifying the vermiculite, the affinity of the vermiculite and the organic resin is improved, and the penetration of the organic material between vermiculite layers can be ensured. By controlling the content and the particle size of vermiculite, the expansion uniformity of the fireproof blocking material is ensured, the toughness of the fireproof blocking material is improved through the reinforced fiber, and the blocking material is always cracked at high temperature.
2. The base material comprises vermiculite and resin, wherein the vermiculite can form a framework after being modified, and the resin organic material is interpenetrated between layers. The unique interlayer expansion performance and high temperature resistance of vermiculite solve the problem that domestic plugging material has insufficient high temperature resistance and foreign organic plugging material has insufficient expansion performance.
3. The invention provides a preparation method of sealing plugging material for electric power, which comprises the steps of modifying expanded vermiculite, grinding to prepare nano powder, uniformly mixing the modified vermiculite, organic resin and reinforcing material, and stirring at 170 ℃ for reaction to obtain a composite material; grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample.
The nano preparation method of the vermiculite can ensure that the vermiculite is uniformly distributed in the organic plugging material and is combined with more organic functional groups, so that the expansion performance and the high temperature resistance of the material are improved, and the requirements of the cable pit construction environment on the fireproof material are met.
4. The sealing plugging material for electric power provided by the invention is applied to cable ditches of converter stations and substations, can avoid the problem of fire spreading of the plugging material, and can be widely applied to the fireproof fields of petrochemical industry, oil mining and the like.
While the invention has been described in terms of specific embodiments, it will be appreciated by those skilled in the art that the invention is not limited to the specific embodiments described above. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.
Claims (8)
1. The utility model provides a sealed putty for electric power which characterized in that: the preparation method of the sealing putty for the electric power comprises the following steps of: sieving unexpanded vermiculite with 250 mesh sieve, modifying with HCl/NaCl, expanding at 800 deg.C, grinding with expansion factor 20 times to specific surface area of 350Kg/m 2 Uniformly mixing the modified vermiculite, the organic resin and the reinforcing material, and then stirring at 170 ℃ to react to obtain a composite material; grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample.
2. The electrical seal plug of claim 1, wherein: the sealing plugging material for electric power is used for plugging cable channels and open positions of courtyard in transformer substations and converter stations.
3. The utility model provides a sealed putty for electric power which characterized in that: with matrix material, curing agent and modificationThe total mass of the sex agent and the reinforcing material comprises 88% of phenolic resin, 5% of unexpanded vermiculite, 5% of 1,4 butanediol and 2% of cellulose fiber; the preparation method of the sealing plugging material for the electric power comprises the following steps: sieving unexpanded vermiculite with 250 mesh sieve, modifying with HCl/NaCl, expanding at 800 deg.C, grinding with expansion factor 20 times to specific surface area of 350Kg/m 2 Uniformly mixing the modified vermiculite, the organic resin and the reinforcing material, and then stirring at 170 ℃ to react to obtain a composite material; grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample.
4. A sealing plug for electrical power according to claim 3, wherein: the sealing plugging material for electric power is used for plugging cable channels and open positions of courtyard in transformer substations and converter stations.
5. The utility model provides a sealed putty for electric power which characterized in that: based on the total mass of the matrix material, the curing agent, the modifier and the reinforcing material, the composite material comprises 88 percent of phenolic resin, 5 percent of unexpanded vermiculite, 5 percent of 1,4 butanediol, 1 percent of basalt fiber and 1 percent of polyester fiber; the preparation method of the sealing plugging material for the electric power comprises the following steps: sieving unexpanded vermiculite with 250 mesh sieve, modifying with HCl/NaCl, expanding at 800 deg.C, grinding with expansion factor 20 times to specific surface area of 350Kg/m 2 Uniformly mixing the modified vermiculite, the organic resin and the reinforcing material, and then stirring at 170 ℃ to react to obtain a composite material; grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample.
6. The electrical seal plug of claim 5, wherein: the sealing plugging material for electric power is used for plugging cable channels and open positions of courtyard in transformer substations and converter stations.
7. A sealing plugging material for electric power,the method is characterized in that: based on the total mass of the matrix material, the curing agent, the modifier and the reinforcing material, the composite material comprises 90% of phenolic resin, 5% of unexpanded vermiculite, 5% of hydroquinone dihydroxyethyl ether, 1% of basalt fiber and 1% of polyester fiber; the preparation method of the sealing plugging material for electric power comprises the following steps of sieving unexpanded vermiculite with a 250-mesh sieve, sorting, modifying with HCL/NaCl, expanding at 800 ℃, grinding with expansion factor 20 times to a specific surface area of 350Kg/m 2 Uniformly mixing the modified vermiculite, the organic resin and the reinforcing material, and then stirring at 170 ℃ to react to obtain a composite material; grinding and sieving the prepared composite material, adding a curing agent, uniformly mixing, and placing in a 180 ℃ oven to obtain a cured sample.
8. The electrical seal plug of claim 7, wherein: the sealing plugging material for electric power is used for plugging cable channels and open positions of courtyard in transformer substations and converter stations.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110047860.0A CN112940443B (en) | 2021-01-14 | 2021-01-14 | Sealing putty for electric power, preparation method and application |
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| CN202110047860.0A CN112940443B (en) | 2021-01-14 | 2021-01-14 | Sealing putty for electric power, preparation method and application |
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| CN112940443B true CN112940443B (en) | 2024-04-02 |
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| WO1980001576A1 (en) * | 1979-02-05 | 1980-08-07 | Hollingsworth & Vose Co | Sheet material containing exfoliated vermiculite |
| GB2359085A (en) * | 2000-02-11 | 2001-08-15 | Winn & Coales Internat Ltd | Thermal insulation material |
| JP2003292700A (en) * | 2002-01-31 | 2003-10-15 | Mitsubishi Chemicals Corp | Soft propylene resin composition |
| CN104194314A (en) * | 2014-09-12 | 2014-12-10 | 西南石油大学 | High-temperature-resistant polyurethane/modified vermiculite composite material and preparation method thereof |
| WO2016206243A1 (en) * | 2015-06-24 | 2016-12-29 | 中国科学院过程工程研究所 | Arc-resistant silicon rubber composite material, preparation method, and uses thereof |
| CN111410455A (en) * | 2020-04-03 | 2020-07-14 | 杨云 | Vermiculite high-temperature sealant and preparation method and preparation device thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584163B (en) * | 2012-01-19 | 2014-01-29 | 周国富 | Inorganic fireproof thermal insulation material and product thereof |
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2021
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1980001576A1 (en) * | 1979-02-05 | 1980-08-07 | Hollingsworth & Vose Co | Sheet material containing exfoliated vermiculite |
| GB2359085A (en) * | 2000-02-11 | 2001-08-15 | Winn & Coales Internat Ltd | Thermal insulation material |
| JP2003292700A (en) * | 2002-01-31 | 2003-10-15 | Mitsubishi Chemicals Corp | Soft propylene resin composition |
| CN104194314A (en) * | 2014-09-12 | 2014-12-10 | 西南石油大学 | High-temperature-resistant polyurethane/modified vermiculite composite material and preparation method thereof |
| WO2016206243A1 (en) * | 2015-06-24 | 2016-12-29 | 中国科学院过程工程研究所 | Arc-resistant silicon rubber composite material, preparation method, and uses thereof |
| CN111410455A (en) * | 2020-04-03 | 2020-07-14 | 杨云 | Vermiculite high-temperature sealant and preparation method and preparation device thereof |
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| CN112940443A (en) | 2021-06-11 |
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