CN108053949A - A kind of preparation method of special type fire mica tape - Google Patents
A kind of preparation method of special type fire mica tape Download PDFInfo
- Publication number
- CN108053949A CN108053949A CN201711428474.6A CN201711428474A CN108053949A CN 108053949 A CN108053949 A CN 108053949A CN 201711428474 A CN201711428474 A CN 201711428474A CN 108053949 A CN108053949 A CN 108053949A
- Authority
- CN
- China
- Prior art keywords
- mica
- mica tape
- preparation
- special type
- phlogopite
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
Abstract
The present invention relates to a kind of preparation method of special type fire mica tape, the content of product organic siliconresin of the present invention is higher by more than 50% than traditional fire-resistant isinglass belt, and in fire-resistant isinglass belt combustion process, organic siliconresin is sintered into mica with SiO at high temperature2Based on structure fine and close conductor protection shell (insulant); it is effectively improved the fire resistance of electric wire; so that the high temperature resistant breakdown upper limit of mica tape is increased to 1050 DEG C/90min from 840 DEG C/90min; flexibility is good; envelope curve smooth in appearance is smooth; wrapped rate stabilization can meet the application requirement of nearly all fire-resistant wire and cable.
Description
Technical field
The invention belongs to electrical insulating material technical field, it is more particularly related to a kind of special type fire mica
The preparation method of band.
Background technology
Electric wire is referred to as " artery " and " nerve " of national economy, is conveying electric energy, transfers information and manufacture various
Motor, instrument, instrument realize that electromagnetic energy converts indispensable basic equipment, are in following electrified, informationized society
Necessary basic product.Some have argued that fire-resisting cable is exactly incombustible cable, fire-resisting cable does not burn not in fact, fire resisting
Cable is when fire occurs, and still ensures that circuit normal power-up in certain time, that is, is fired in certain flame temperature
Normal transmission electric energy, the various control signals of transmission, alarm signal are remained under conditions of burning, in certain time so that illumination, fire prevention
Warning device and other emergency sets can continue to be powered within a certain period of time, and rescue work is enable to be normally carried out.Flame proof electrical
Cable is that if wrapped dried layer fire-resistant isinglass belt, then will be around the copper conductor wrapped as flame retardant coating between each copper conductor and insulating layer
Extrusion insulating layer is carried out, then carries out being twisted wrapped armor, oversheath is finally squeezed out and fire-resisting cable production can be completed.Institute
With fire-resistant isinglass belt therein is the critical material layer of fire-resisting cable.
Fire-resistant isinglass belt is also known as fire-resisting cable fire-resistant isinglass belt, is a kind of high performance mica insulation product, has excellent
Good high temperature resistance and flame resistance energy.The mica tape has good flexibility under normal conditions, suitable for various fire-resisting cables
In main refractory insulating layer.The volatilization of harmful vapors is substantially not present when meeting open fire and burning, so the product is used for cable not
It is but effectively, and very safe.
Fire-resistant isinglass belt as electrical insulating material is made of mica paper, reinforcing material and adhesive three parts,
In really to play the material of insulated fireproof be mica paper, mica paper is the key that cable electrical apparatus insulation portion is ensured under flame temperature
Part.Therefore the thermal level of mica paper determines the temperature classification of mica tape.At present both at home and abroad in fire-resistant isinglass belt using more
Be muscovite, phlogopite and synthetic mica.The advantage that synthetic mica tape reaches A class fire resistant requirements with temperature resistant grade once obtained
The favor of each cable producer, but its hardness is higher than natural mica, it is wrapped during flexibility outline it is weaker, it is particularly disadvantageous in
Small line footpath electric wire it is wrapped, and " fluorine-containing " dispute at present it is in the field of business final conclusion has not yet been formed, while be subject to European Union items
The limitation of environmental protection instruction, popularization and application of the synthetic mica tape at present in the whole world are extremely limited.Natural mica can be made there are many kind
Mainly there are two kinds of muscovite and phlogopite for electrical insulating material.But limited to that (phlogopite is in 800 DEG C of releases by heat resistance
The crystallization water, muscovite discharge the crystallization water at 600 DEG C), the requirement for reaching A class fire-resisting cables is also difficult at present.Countries in the world are related
The experimental condition of fire-resistant wire and cable is not quite similar, but total requirement is identical, and exactly cable does not puncture under burning condition,
And keep the integrality of circuit.Fire test shows：The electric wire of gold mica tape is wrapped, in 840 DEG C of voltage 1000V of temperature
Under conditions of can ensure not puncture when 90min is small, at present the gold mica tape in industry in high temperature resistant substantially all at 840 DEG C
Left and right.
The content of the invention
Problem to be solved by this invention is to provide a kind of preparation method of special type fire mica tape.
To achieve these goals, the technical solution taken of the present invention is：
A kind of preparation method of special type fire mica tape, includes the following steps：
(1) pre-process
Selected high temperature phlogopite, is fitted into special electric furnace, and constant high temperature heats, and sloughs the part knot in mica crystal
Brilliant water；
(2) clean
The phlogopite after calcining is handled with acid-base solution, removal damages proof voltage and all non-micas of heat resistance are miscellaneous
Object obtains mica flake；
(3) slurrying is crushed
Mechanical crushing mica flake obtains mica powder, further washing and screening, slurrying；
(4) paper processed
By the slurry after stirring evenly, pumped by impeller pump into classification case, it is using mthod of white water from paper making that it is uniformly dilute scattered
Afterwards into papermaking in paper-machine screen case；
(5) prepared by adhesive
By organic silica gel, diluent and curing agent according to 5：22：Mica tape gluing is made in 1 ratio mixed diluting
Agent；
(6) embryo processed
Select SiO2Content be 85-95% the glass fabric that is woven into of alkali-free glass wool, by glass fabric mistake
Adhesive, two face paste mica paper obtain mica germ band；
(7) post-process
Oven for drying cools down, and cuts, and winding obtains superhigh temperature resistant mica tape；
Preferably, the natural high-quality phlogopite ore of step (1) selection, characteristic is whiteness：65-79%, Mohs are hard
Degree：2.6-2.8, density：2.7-2.9g/cm3, transparency：1-21%.
Preferably, the calcining heat of phlogopite is 800-900 DEG C in the step (1), calcination time 50-80min.
Preferably, the step (3) can carry out effective ore grinding, phlogopite using the planetary disk roller grinding machine of high speed to phlogopite
Piece residence time in mill is 5-9s；The meso-position radius of particle are 10-50 μm after ore grinding.
Preferably, step (4) adhesive can be by organic silica gel, epoxy resin, organic solvent, accelerating agent part, gas phase
Method silica is according to 2:4:5:0.1:0.3 ratio mixed diluting is made.
Preferably, the step (7) utilizes high temperature oven flash baking, and the drying temperature is divided into two sections, first segment
Oven temperature is 115-125 DEG C, and the drying of second segment is in 165-175 DEG C；The speed of service is 6-8m/ to mica tape in an oven
mim。
Preferably, 30h at a temperature of mica tape being deposited in 40-50 DEG C after step (7) drying, is further cured
Finished product.
Advantageous effect：The present invention relates to a kind of preparation method of special type fire mica tape, product organic siliconresins of the present invention
Content be higher by more than 50% than traditional fire-resistant isinglass belt, in fire-resistant isinglass belt combustion process, organic siliconresin at high temperature with
Mica is sintered into SiO2Based on structure fine and close conductor protection shell (insulant), be effectively improved the resistance to of electric wire
Fiery performance so that the high temperature resistant breakdown upper limit of mica tape is increased to 1050 DEG C/90min from 840 DEG C/90min, and flexibility is good, bag
Line smooth in appearance is smooth, wrapped rate stabilization, and the application that can meet nearly all fire-resistant wire and cable will.
Specific embodiment
Embodiment 1：
A kind of preparation method of special type fire mica tape, includes the following steps：
(1) pre-process
Selected high temperature phlogopite, is fitted into special electric furnace, and constant high temperature heats, and sloughs the part knot in mica crystal
Brilliant water, the calcining heat are 800 DEG C, calcination time 50min, and the selected phlogopite ore, characteristic is whiteness：
65%, Mohs' hardness：2.6, density：2.7g/cm3, transparency：1%；
(2) clean
The phlogopite after calcining is handled with acid-base solution, removal damages proof voltage and all non-micas of heat resistance are miscellaneous
Object obtains mica flake；
(3) slurrying is crushed
Using the planetary disk roller grinding machine of high speed effective ore grinding, phlogopite piece residence time in mill can be carried out to phlogopite
For 5s；The meso-position radius of particle are 10 μm after ore grinding, obtain mica powder, further washing and screening, slurrying；
(4) paper processed
By the slurry after stirring evenly, pumped by impeller pump into classification case, it is using mthod of white water from paper making that it is uniformly dilute scattered
Afterwards into papermaking in paper-machine screen case；
(5) prepared by adhesive
By organic silica gel, diluent and curing agent according to 5:22:Mica tape gluing is made in 1 ratio mixed diluting
Agent, described adhesive can be by organic silica gel, epoxy resin, organic solvent, accelerating agent part, fumed silicas according to 2:4:5:
0.1:0.3 ratio mixed diluting is made；
(6) embryo processed
Select SiO2Content be 85% the glass fabric that is woven into of alkali-free glass wool, glass fabric is crossed into bonding
Agent, two face paste mica paper obtain mica germ band；
(7) post-process
Using high temperature oven flash baking, the drying temperature is divided into two sections, and the oven temperature of first segment is 115 DEG C, the
Two sections of drying is in 165 DEG C；The speed of service is 6m/mim to mica tape in an oven, and mica tape is deposited in 40 DEG C of temperature after drying
The lower 30h of degree, further carries out curing finished product, cools down, cut, winding obtains superhigh temperature resistant mica tape.
Embodiment 2：
A kind of preparation method of special type fire mica tape, includes the following steps：
(1) pre-process
Selected high temperature phlogopite, is fitted into special electric furnace, and constant high temperature heats, and sloughs the part knot in mica crystal
Brilliant water, the calcining heat are 850 DEG C, calcination time 65min, and the selected phlogopite ore, characteristic is whiteness：
72%, Mohs' hardness：2.7, density：2.8g/cm3, transparency：11%；
(2) clean
The phlogopite after calcining is handled with acid-base solution, removal damages proof voltage and all non-micas of heat resistance are miscellaneous
Object obtains mica flake；
(3) slurrying is crushed
Using the planetary disk roller grinding machine of high speed effective ore grinding, phlogopite piece residence time in mill can be carried out to phlogopite
For 7s；The meso-position radius of particle are 30 μm after ore grinding, obtain mica powder, further washing and screening, slurrying；
(4) paper processed
By the slurry after stirring evenly, pumped by impeller pump into classification case, it is using mthod of white water from paper making that it is uniformly dilute scattered
Afterwards into papermaking in paper-machine screen case；
(5) prepared by adhesive
By organic silica gel, diluent and curing agent according to 5:22:Mica tape gluing is made in 1 ratio mixed diluting
Agent, described adhesive can be by organic silica gel, epoxy resin, organic solvent, accelerating agent part, fumed silicas according to 2:4:5:
0.1:0.3 ratio mixed diluting is made；
(6) embryo processed
Select SiO2Content be 90% the glass fabric that is woven into of alkali-free glass wool, glass fabric is crossed into bonding
Agent, two face paste mica paper obtain mica germ band；
(7) post-process
Using high temperature oven flash baking, the drying temperature is divided into two sections, and the oven temperature of first segment is 120 DEG C, the
Two sections of drying is in 170 DEG C；The speed of service is 7m/mim to mica tape in an oven, and mica tape is deposited in 45 DEG C of temperature after drying
The lower 30h of degree, further carries out curing finished product, cools down, cut, winding obtains superhigh temperature resistant mica tape.
Embodiment 3：
A kind of preparation method of special type fire mica tape, includes the following steps：
(1) pre-process
Selected high temperature phlogopite, is fitted into special electric furnace, and constant high temperature heats, and sloughs the part knot in mica crystal
Brilliant water, the calcining heat are 900 DEG C, calcination time 80min, and the selected phlogopite ore, characteristic is whiteness：
79%, Mohs' hardness：2.8, density：2.9g/cm3, transparency：21%；
(2) clean
The phlogopite after calcining is handled with acid-base solution, removal damages proof voltage and all non-micas of heat resistance are miscellaneous
Object obtains mica flake；
(3) slurrying is crushed
Using the planetary disk roller grinding machine of high speed effective ore grinding, phlogopite piece residence time in mill can be carried out to phlogopite
For 9s；The meso-position radius of particle are 50 μm after ore grinding, obtain mica powder, further washing and screening, slurrying；
(4) paper processed
By the slurry after stirring evenly, pumped by impeller pump into classification case, it is using mthod of white water from paper making that it is uniformly dilute scattered
Afterwards into papermaking in paper-machine screen case；
(5) prepared by adhesive
By organic silica gel, diluent and curing agent according to 5：22：Mica tape gluing is made in 1 ratio mixed diluting
Agent, described adhesive can be by organic silica gel, epoxy resin, organic solvent, accelerating agent part, fumed silicas according to 2:4:5:
0.1:0.3 ratio mixed diluting is made；
(6) embryo processed
Select SiO2Content be 95% the glass fabric that is woven into of alkali-free glass wool, glass fabric is crossed into bonding
Agent, two face paste mica paper obtain mica germ band；
(7) post-process
Using high temperature oven flash baking, the drying temperature is divided into two sections, and the oven temperature of first segment is 125 DEG C, the
Two sections of drying is in 175 DEG C；The speed of service is 8m/mim to mica tape in an oven, and mica tape is deposited in 50 DEG C of temperature after drying
The lower 30h of degree, further carries out curing finished product, cools down, cut, winding obtains superhigh temperature resistant mica tape.
By the superhigh temperature resistant gold mica tape prepared after process above, sample is taken out respectively, and measurement result is as follows：
It can be drawn according to above table data, the fire resisting of the superhigh temperature resistant gold mica tape obtained when 2 parameter of embodiment
Performance and softness are better than the technical indicator of existing mica tape, and of low cost, i.e., this condition is more advantageous to superhigh temperature resistant gold
The manufacture of mica tape.
The invention discloses a kind of preparation method of special type fire mica tape, the content ratios of product organic siliconresin of the present invention
Traditional fire-resistant isinglass belt is higher by more than 50%, and in fire-resistant isinglass belt combustion process, organic siliconresin is sintered at high temperature with mica
Into with SiO2Based on structure fine and close conductor protection shell (insulant), be effectively improved the fire resistance of electric wire,
So that the high temperature resistant breakdown upper limit of mica tape is increased to 1050 DEG C/90min from 840 DEG C/90min, flexibility is good, goes sightseeing outside envelope curve
Sliding smooth, wrapped rate stabilization, the application that can meet nearly all fire-resistant wire and cable will.
Above-described is only the preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (7)
1. a kind of preparation method of special type fire mica tape, it is characterised in that：Include the following steps：
(1) pre-process
Selected high temperature phlogopite, is fitted into special electric furnace, and constant high temperature heats, and sloughs the partially crystallizable in mica crystal
Water；
(2) clean
The phlogopite after calcining is handled with acid-base solution, removal damages proof voltage and all non-mica sundries of heat resistance, obtains
To mica flake；
(3) slurrying is crushed
Mechanical crushing mica flake obtains mica powder, further washing and screening, slurrying；
(4) paper processed
By the slurry after stirring evenly, pumped by impeller pump into classification case, it is using mthod of white water from paper making that it is uniformly dilute scattered laggard
Enter papermaking in paper machine net cage；
(5) prepared by adhesive
By organic silica gel, diluent and curing agent according to 5：22：Mica tape adhesive is made in 1 ratio mixed diluting；
(6) embryo processed
Select SiO2Content be 85-95% the glass fabric that is woven into of alkali-free glass wool, glass fabric is crossed into bonding
Agent, two face paste mica paper obtain mica germ band；
(7) post-process
Oven for drying cools down, and cuts, and winding obtains superhigh temperature resistant mica tape.
2. a kind of preparation method of special type fire mica tape described in accordance with the claim 1, it is characterised in that：The step (1)
The natural high-quality phlogopite ore of selection, characteristic are whiteness：65-79%, Mohs' hardness：2.6-2.8, density：2.7-2.9g/
cm3, transparency：1-21%.
3. a kind of preparation method of special type fire mica tape described in accordance with the claim 1, it is characterised in that：The step (1)
The calcining heat of middle phlogopite is 800-900 DEG C, calcination time 50-80min.
4. a kind of preparation method of special type fire mica tape described in accordance with the claim 1, it is characterised in that：The step (3)
Effective ore grinding can be carried out to phlogopite using the planetary disk roller grinding machine of high speed, phlogopite piece residence time in mill is 5-9s；
The meso-position radius of particle are 10-50 μm after ore grinding.
5. a kind of preparation method of special type fire mica tape described in accordance with the claim 1, it is characterised in that：The step (4)
Adhesive can be by organic silica gel, epoxy resin, organic solvent, accelerating agent part, fumed silica according to 2:4:5:0.1:0.3
Ratio mixed diluting be made.
6. a kind of preparation method of special type fire mica tape described in accordance with the claim 1, it is characterised in that：The step (7)
Using high temperature oven flash baking, the drying temperature is divided into two sections, and the oven temperature of first segment is 115-125 DEG C, second segment
Drying in 165-175 DEG C；The speed of service is 6-8m/mim to mica tape in an oven.
7. a kind of preparation method of special type fire mica tape described in accordance with the claim 1, it is characterised in that：The step (7)
30h at a temperature of mica tape is deposited in 40-50 DEG C after drying further carries out curing finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711428474.6A CN108053949A (en) | 2017-12-26 | 2017-12-26 | A kind of preparation method of special type fire mica tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711428474.6A CN108053949A (en) | 2017-12-26 | 2017-12-26 | A kind of preparation method of special type fire mica tape |
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| Publication Number | Publication Date |
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| CN108053949A true CN108053949A (en) | 2018-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711428474.6A Pending CN108053949A (en) | 2017-12-26 | 2017-12-26 | A kind of preparation method of special type fire mica tape |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112480522A (en) * | 2020-11-17 | 2021-03-12 | 常州市沃科科技有限公司 | Fireproof mica insulation composite material and preparation method thereof |
| CN112712947A (en) * | 2020-12-29 | 2021-04-27 | 湖北平安电工股份有限公司 | Method for improving appearance chromaticity of synthetic mica plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2779564Y (en) * | 2005-03-10 | 2006-05-10 | 吴逸民 | Fire resistance mica belt |
| CN102651261A (en) * | 2012-05-28 | 2012-08-29 | 四川美丰云母工业有限责任公司 | Manufacture method of mica paper for capacitor |
| CN102651262A (en) * | 2012-05-28 | 2012-08-29 | 四川美丰云母工业有限责任公司 | Method for manufacturing calcined high-temperature and high-pressure resistant mica paper tape |
| CN102737769A (en) * | 2012-06-26 | 2012-10-17 | 常州八益电缆股份有限公司 | Novel low-smoke zero-halogen flame-retardant fire-resistant and impact-resistant cable for nuclear power station |
-
2017
- 2017-12-26 CN CN201711428474.6A patent/CN108053949A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2779564Y (en) * | 2005-03-10 | 2006-05-10 | 吴逸民 | Fire resistance mica belt |
| CN102651261A (en) * | 2012-05-28 | 2012-08-29 | 四川美丰云母工业有限责任公司 | Manufacture method of mica paper for capacitor |
| CN102651262A (en) * | 2012-05-28 | 2012-08-29 | 四川美丰云母工业有限责任公司 | Method for manufacturing calcined high-temperature and high-pressure resistant mica paper tape |
| CN102737769A (en) * | 2012-06-26 | 2012-10-17 | 常州八益电缆股份有限公司 | Novel low-smoke zero-halogen flame-retardant fire-resistant and impact-resistant cable for nuclear power station |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112480522A (en) * | 2020-11-17 | 2021-03-12 | 常州市沃科科技有限公司 | Fireproof mica insulation composite material and preparation method thereof |
| CN112712947A (en) * | 2020-12-29 | 2021-04-27 | 湖北平安电工股份有限公司 | Method for improving appearance chromaticity of synthetic mica plate |
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Application publication date: 20180518 |
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