CN100334040C - Mica band - Google Patents
Mica band Download PDFInfo
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- CN100334040C CN100334040C CNB200510033422XA CN200510033422A CN100334040C CN 100334040 C CN100334040 C CN 100334040C CN B200510033422X A CNB200510033422X A CN B200510033422XA CN 200510033422 A CN200510033422 A CN 200510033422A CN 100334040 C CN100334040 C CN 100334040C
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- mica tape
- mica
- tape according
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- mineral compound
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Abstract
The present invention relates to a mica tape which comprises a mica paper layer and a reinforcing material layer, wherein either of the mica paper layer and the supporting material layer is mixed with an inorganic compound capable of being sintered. The inorganic compound capable of being sintered is a metal compound containing oxygen, a nitride or a carbide, and the metal compound containing oxygen is a metal oxide, a metal hydroxide, a silicate or a borate. The mica tape of the present invention is used for making electrical wires, and under the condition of flames, the inorganic compound capable of being sintered and the mica paper jointly form a compact sintered body having favorable insulating performance, hardness and waterproof performance. Therefore, the electrical wires can resist water drenching and impact and satisfy the standards of fireproofing electrical wires and cables in China and in the world.
Description
Technical field
The present invention relates to a kind of mica tape, particularly a kind of mica tape that is used for fire-resistant wire and cable.
Background technology
Fire-resistant wire and cable is the cable that still can keep the normal operation of certain hour when fire burns.It has obtained to use widely, can not lack fire-resistant wire and cable in the fire-fighting of megastore, Highrise buildings, sub., boats and ships, aviation, oil, chemical enterprise and Emergency Power.
The place that fire-resistant wire and cable is different from fireproof cable (or being called the mineral cable, Mi type cable) is that its insulation and sheath is the organism resin, so its fire performance mainly relies on the flame retardant coating in its structure.Flame retardant coating mainly is made up of fire-resistant isinglass belt.
Traditional fire-resistant isinglass belt is with high-temperature-resistant adhesive that certain thickness mica paper and supporting material is bonding and make.Main refractory insulating material in the fire-resistant isinglass belt is a mica paper.Different mica paper, its fire-resistance property also has difference, as natural muscovite paper [KAl
2(AlSi
3O
10) (OH)
2] in the time of 650 ℃ (OH) beginning decompose natural phlogopite [KMg
3(AlSi
3O
10) (OH)
2] the thermolysis starting temperature then at 850 ℃, synthetic mica paper [KMg
3AlSi
3O
10F
2] heat decomposition temperature up to 1200 ℃, so the refractory temperature of the fire-resistant isinglass belt made from different mica paper is also different.It is also just different to use the flame temperature that fire-resistant wire and cable that different fire-resistant isinglass belts make can bear.
Fire-resistant wire and cable is when meeting with fire, except flame burning has been destroyed its insulating material, also has the injection of the water of external mechanically bump (as the stone that falls down, plank, steel plate) and fire-fighting, under this abominable fire hazard environment, fire-resistant wire and cable is the integrity of necessary holding circuit also.So the fire-resistant wire and cable of high request must be able to bear the test of flame, bump, three kinds of destructivenesses of water pouring, to guarantee under the fire hazard environment of reality Emergency Power being used reliably.Scene of a fire state more than in IEC60331-32, British Standard BS3687 and U.S. DC2196 standard, embodying truly.
Above-mentioned traditional fire-resistant isinglass belt can only guarantee at keep its normal power supply of flame condition at certain hour, can not normally move at the state that bears water pouring, bump.Trace it to its cause is under flame condition, high temperature resistant binder has lost its cohesiveness, glasscloth has lost its physical strength, bonding force between the mica flake is considerably loose, under water pouring condition, the insulation resistance of mica tape structure fire resistance layer sharply descends, and can't keep the insulation resistance between line and short circuit occurs.When mechanical impact occurring, the mica tape structure of having burnt quite loosely becomes looser and comes off, and also can't keep its insulativity.
Summary of the invention
The purpose of this invention is to provide a kind of fire-resistant isinglass belt, under flame condition, still can water-fastly drench, impact resistance.
Mica tape of the present invention comprises mica paper layer and supporting material layer, it is characterized in that, is mixed with sintered mineral compound in any one deck.
Sintered mineral compound is meant under flame condition can be separately or sinter the mineral compound of dense sintering body into mica paper.The dense sintering body is the same with pottery good insulation performance performance, hardness and water resistance, so can water-fast pouring and impact resistance.Above-mentioned sintered mineral compound is metal oxygen-containing compound, nitride or carbide.Above-mentioned metal oxygen-containing compound is metal oxide, metal hydroxides, silicate or borate.Metal oxide wherein is selected from aluminum oxide, magnesium oxide, zinc oxide, silicon oxide or boron oxide.Metal hydroxides wherein is aluminium hydroxide, magnesium hydroxide, zinc hydroxide or boron hydroxide.Silicate wherein is hydrated magnesium silicate or neusilin.Borate wherein is hydration zinc borate or hydration barium borate.Nitride wherein is boron nitride or aluminium nitride.Carbide wherein is a silicon carbide.
Above-mentioned sintered mineral compound can also be carbonate, vitriol, phosphoric acid salt, nitrate, muriate or iodide, as magnesiumcarbonate, Tai-Ace S 150, trimagnesium phosphate, SODIUMNITRATE, aluminum chloride, magnesium iodide etc.
Every square metre of sintered mineral compound consumption that contains of mica tape of the present invention is greater than 2 grams.The granularity of used sintered mineral compound is less than 50 microns.The more little easy more mica paper layer that penetrates into of granularity, with the mica thorough mixing, the performance of the dense sintering body of formation is good more.
Sintered mineral compound of the present invention can penetrate into mica paper layer and supporting material layer by being blended in the binding agent.Add sintered mineral compound mixing in tackiness agent after, sintered mineral compound can be by adhesive permeation in mica paper layer and supporting material layer, because the less just easier infiltration of the granularity of sintered mineral compound.Sintered mineral compound in the mica tape of Xing Chenging has been attached in each layer like this, is not easy to drop out, and closely contacts with each layer, and high temperature forms the effective of dense sintering body down.
The present invention realizes its purpose like this: under flame condition, sintered mineral compound and mica paper contained in the mica tape sinter the dense sintering body together into, and good insulation performance performance, hardness and water resistance are arranged, therefore can water-fast pouring and impact resistance.
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Description of drawings
Accompanying drawing 1 is the structure iron of mica tape of the present invention.
Embodiment
Embodiment 1
As accompanying drawing 1, the mica tape of present embodiment comprises mica paper layer 1 and supporting material layer 2.Used sintered mineral compound 3 is magnesium hydroxides.The granularity of magnesium hydroxide is 10 microns, and consumption is that every square metre of mica tape restrains with 10.Mica paper layer is the phlogopite paper of every square metre 120 gram.The supporting material layer is the woven fiber glass of every square metre 30 gram.The silicone resin of magnesium hydroxide and every square metre 23 gram mixes, adhesion mica paper layer and supporting material layer, and drying, curing were promptly made in 8 minutes down at 150 ℃ then.
The magnesium hydroxide of present embodiment also can be used replacements such as magnesiumcarbonate, Tai-Ace S 150, trimagnesium phosphate, SODIUMNITRATE, aluminum chloride or magnesium iodide.
Embodiment 2
The mica tape of present embodiment comprises mica paper layer and supporting material layer.Used sintered mineral compound is an aluminum oxide.The granularity of aluminum oxide is 6 microns, and consumption is that every square metre of mica tape restrains with 3.Mica paper layer is the phlogopite paper of every square metre 120 gram.The supporting material layer is the woven fiber glass of every square metre 30 gram.The silicone resin of aluminum oxide and every square metre 23 gram mixes, adhesion mica paper layer and supporting material layer, and drying, curing were promptly made in 8 minutes down at 150 ℃ then.
The mica tape of present embodiment comprises mica paper layer and supporting material layer.Used sintered mineral compound is the mixture of aluminium hydroxide and magnesium hydroxide, both mixed of 1: 2 by weight percentage.Aluminium hydroxide granularity be 15 microns, the granularity of magnesium hydroxide is 5 microns.The consumption of sintered mineral compound is that every square metre of mica tape restrains with 8.Mica paper layer is the phlogopite paper of every square metre 120 gram.The supporting material layer is the woven fiber glass of every square metre 30 gram.Mica paper layer and supporting material layer are bonded together with the silicone resin of every square metre 23 gram.The silicone resin of sintered mineral compound and every square metre 23 gram mixes, and is coated in outside the mica paper layer, and drying, curing were promptly made in 8 minutes down at 150 ℃ then.
Embodiment 4
The mica tape of present embodiment comprises mica paper layer and supporting material layer.Mica paper layer is the phlogopite paper of every square metre 120 gram.The supporting material layer is the woven fiber glass of every square metre 30 gram.Mica paper layer and supporting material layer are bonded together with the silicone resin of every square metre 23 gram.The silicone resin of talcum powder and every square metre 23 gram mixes, and is coated in outside the mica paper layer, and drying, curing were promptly made in 8 minutes down at 150 ℃ then.Talcous granularity is 30 microns, and consumption is that every square metre of mica tape restrains with 60.
Talcous main component is a hydrated magnesium silicate.
The talcum powder of present embodiment also can contain the natural mineral replacement of sintered mineral compound with clay, kaolin, serpentine, mica etc.
Because contain sintered mineral compound in these natural mineral, so and silicone resin be coated in after mixing mica paper layer outer after, also just contained sintered mineral compound in the mica tape of making.
Embodiment 5
The mica tape of present embodiment comprises mica paper layer and supporting material layer.Used sintered mineral compound is the hydration barium borate.The granularity of hydration barium borate is 3 microns, and consumption is that every square metre of mica tape restrains with 25.Mica paper layer is the phlogopite paper of every square metre 120 gram.The supporting material layer is the PE plastics film.The silicone resin of hydration barium borate and every square metre 23 gram mixes, adhesion mica paper layer and supporting material layer, and drying, curing were promptly made in 8 minutes down at 150 ℃ then.
Embodiment 6
The mica tape of present embodiment comprises mica paper layer and supporting material layer.Used sintered mineral compound is a boron nitride fibre.The granularity of boron nitride is 50 microns, and consumption is that every square metre of mica tape restrains with 70.Mica paper layer is the phlogopite paper of every square metre 120 gram.The supporting material layer is the woven fiber glass of every square metre 30 gram.Mica paper layer and supporting material layer are bonded together with the silicone resin of every square metre 23 gram.The silicone resin of boron nitride fibre and every square metre 23 gram mixes, and is coated in outside the supporting material layer, and drying, curing were promptly made in 8 minutes down at 150 ℃ then.
Sintered mineral compound in this enforcement also can be ceramic fiber materials such as aluminium nitride or silicon carbide.
Comparative Examples
The mica tape of this Comparative Examples comprises mica paper layer and supporting material layer.Mica paper layer is the phlogopite paper of every square metre 120 gram.The supporting material layer is the woven fiber glass of every square metre 30 gram.Mica paper layer and supporting material layer are bonded together with the silicone resin of every square metre 23 gram.Drying, curing were promptly made in 8 minutes down at 150 ℃ then.
Test 1 fire testing
Test according to GB/T 19216.21-2003/IEC 60331-21:1999, test condition is as follows:
1. blowtorch title: length is at least the tubular gas burner of 400mm
2. fuel: propane
3. flame temperature: 950 ± 40 ℃
4. test period: 3 hours
Test procedure:
Device according to above-mentioned standard-required carries out following test:
1. specimen preparation: the conductor of long 1200mm, with the two-layer mica tape for preparing 50% splicing, be wrapped on the conductor, the conductor of 100mm is exposed at two ends, makes test cable.
2. sample is installed on clip and the support, sample is regulated blowtorch to correct position relatively.
3. light blowtorch, regulate propane and air flow quantity; Turn on the power switch, regulating voltage is to the 0.6/1.0 kilovolt.
4. undertaken by the fiery time remaining of given confession, answer knock down the flame afterwards, but reply cable sample continues power supply 15 minutes, promptly total test period should be and supplies the fire time to add 15 minutes cooling time.
Qualified criterion:
1. sustaining voltage, promptly none fusible cut-out or isolating switch disconnect;
2. conductor is continuous, and promptly one on bulb does not extinguish yet.
After tested, the mica tape of embodiment 1-6 and Comparative Examples is all qualified.
Test 2 water resistant tests
Test according to British Standard BS 6387:1994, test condition is as follows:
1. blowtorch title: length is at least the tubular gas burner of 400mm
2. fuel: propane
3. flame temperature: 650 ± 40 ℃
4. sprinkler: the hydraulic pressure that provides is between 250 kPas to 350 kPas, and near the discharge the cable sample is raised between 0.30 liter at every square metre of per second 0.25.
Test procedure:
1. specimen preparation: the conductor of long 1200mm, with the two-layer mica tape for preparing 50% splicing, be wrapped on the conductor, the conductor of 100mm is exposed at two ends, makes test cable.
2. fully open source of the gas, and the ignition combustion device, by the regulated valve on the source of the gas, flame temperature is adjusted to 650 ± 40 ℃.
3. close the source of the gas that leads to burner, make fray-out of flame, and the position of keeping regulated valve does not change air feed.
4. the cable sample is installed on the described iron and steel support of above-mentioned standard, and whole cable assembly is in place on the test framework.
5. the connection power supply is adjusted to 450/750 volt of load voltage value to phase voltage.
6. the connection source of the gas rekindles burner, and after 15 minutes, the tap of fetching boiling water makes the shower nozzle of sprinkler be burnt the zone watering to the cable sample.
7. test 15 minutes burns away and sprinkles water.
Qualified criterion:
1. sustaining voltage, promptly none fusible cut-out or isolating switch disconnect;
2. conductor is continuous, and promptly one on bulb does not extinguish yet.
After tested, the mica tape of embodiment 1-6 is all qualified; And drenched back 3 minutes at water with the mica tape of Comparative Examples, fuse blows, defective.
Test according to British Standard BS 6387:1994, test condition is as follows:
1. blowtorch title: length is at least the tubular gas burner of 400mm
2. fuel: propane
3. flame temperature: 950 ± 40 ℃
Test procedure:
1. specimen preparation: the conductor of long 1200mm, with the two-layer mica tape for preparing 50% splicing, be wrapped on the conductor, the conductor of 100mm is exposed at two ends, makes test cable.
2. sample is installed on the test ladder,, makes this be the tram with respect to sample by above-mentioned standard adjustment burner.
3. making current is adjusted to 450/750 volt of load voltage value to phase voltage.
4. startup percussion mechanism, the ignition combustion device.
5. continue test 15 minutes.
Qualified criterion:
1. sustaining voltage, promptly none fusible cut-out or isolating switch disconnect;
2. conductor is continuous, and promptly one on bulb does not extinguish yet.
After tested, the mica tape of embodiment 1-6 is all qualified; And the mica tape of Comparative Examples after applying mechanical impact 5 minutes, fuse blows.
Test 4 impact resistances test 2
Test according to IEC60331-31:2002, test condition is as follows:
4. blowtorch title: length is at least the tubular gas burner of 400mm
5. fuel: propane
6. flame temperature: 750 ± 40 ℃
Test procedure:
1. specimen preparation: the conductor of long 1200mm, with the two-layer mica tape for preparing 50% splicing, be wrapped on the conductor, the conductor of 100mm is exposed at two ends, makes test cable.
2. sample is installed on the test ladder,, makes this be the tram with respect to sample by above-mentioned standard adjustment burner.
3. adopt the fusible cut-out of 2A or isolating switch, every phase conductor is connected with one of transformer output terminal with characteristic of equal value.
4. the ignition combustion device is regulated propane and air flow quantity.
5. behind the ignition combustion device, start immediately to impact facility, starting characteristics test cycle timer take place, after starting 5 minutes ± 10 seconds, and, impact the generation facility and should clash into cable afterwards every 5 minutes ± 10 seconds, behind each bump, the bump rod should promote from the test ladder in bump 20 seconds.
The test timer initiation after, the demand working power supply, regulating voltage is to the 0.6/1.0 kilovolt.
Qualified criterion:
1. sustaining voltage, promptly none fusible cut-out or isolating switch disconnect;
2. conductor is continuous, and promptly one on bulb does not extinguish yet.
After tested, the mica tape of embodiment 1-6 is all qualified; And the mica tape of Comparative Examples is applying 4 minutes of bump, fuse blows.
Claims (10)
1. a mica tape comprises mica paper layer and supporting material layer, it is characterized in that, contains sintered mineral compound in any one deck.
2. mica tape according to claim 1 is characterized in that described sintered mineral compound is metal oxygen-containing compound, nitride or carbide.
3. mica tape according to claim 2 is characterized in that described metal oxygen-containing compound is metal oxide, metal hydroxides, silicate or borate.
4. mica tape according to claim 3 is characterized in that described metal oxide is aluminum oxide, magnesium oxide, zinc oxide, silicon oxide or boron oxide.
5. mica tape according to claim 3 is characterized in that described metal hydroxides is aluminium hydroxide, magnesium hydroxide, zinc hydroxide or boron hydroxide.
6. mica tape according to claim 3 is characterized in that described silicate is hydrated magnesium silicate or neusilin.
7. mica tape according to claim 3, its feature is hydration zinc borate or hydration barium borate at described borate.
8. mica tape according to claim 2 is characterized in that described nitride is boron nitride or aluminium nitride, and described carbide is a silicon carbide.
9. mica tape according to claim 1 is characterized in that the sintered mineral compound consumption that every square metre of described mica tape contains restrains greater than 2.
10. mica tape according to claim 1, the granularity that it is characterized in that described sintered mineral compound is less than 50 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510033422XA CN100334040C (en) | 2005-03-09 | 2005-03-09 | Mica band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510033422XA CN100334040C (en) | 2005-03-09 | 2005-03-09 | Mica band |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1817816A CN1817816A (en) | 2006-08-16 |
| CN100334040C true CN100334040C (en) | 2007-08-29 |
Family
ID=36918057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510033422XA Expired - Fee Related CN100334040C (en) | 2005-03-09 | 2005-03-09 | Mica band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100334040C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1748996A (en) * | 2005-09-29 | 2006-03-22 | 吴逸民 | Mica tape |
| CN104183308B (en) * | 2014-09-16 | 2017-06-06 | 江苏宏基环电股份有限公司 | A kind of electric wire |
| CN106567927B (en) * | 2015-10-13 | 2018-05-04 | 自贡东光汽车配件有限公司 | A kind of Novel sealing cushion and its manufacture method |
| CN110893707A (en) * | 2019-11-27 | 2020-03-20 | 成都龙之泉科技股份有限公司 | Anticorrosive fire-retardant type material layer |
| CN116462966B (en) * | 2023-04-23 | 2024-04-23 | 北京倚天凌云科技股份有限公司 | Mica paper treatment fluid and mica tape for aerial cable, and preparation methods and applications thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1168530A (en) * | 1996-02-14 | 1997-12-24 | 陈云生 | Refractory synthetic mica tape and its production process |
| CN2508351Y (en) * | 2000-12-21 | 2002-08-28 | 朱克超 | Insulation band for longitudinally wrapping fire-resistant wire |
| CN2665875Y (en) * | 2003-12-15 | 2004-12-22 | 天津安琪尔集团有限公司 | Fire-resistant cable for ship |
| CN1588563A (en) * | 2004-10-15 | 2005-03-02 | 上海胜武电缆有限公司 | Flexible fire-proof cable and its producing process and producing device |
-
2005
- 2005-03-09 CN CNB200510033422XA patent/CN100334040C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1168530A (en) * | 1996-02-14 | 1997-12-24 | 陈云生 | Refractory synthetic mica tape and its production process |
| CN2508351Y (en) * | 2000-12-21 | 2002-08-28 | 朱克超 | Insulation band for longitudinally wrapping fire-resistant wire |
| CN2665875Y (en) * | 2003-12-15 | 2004-12-22 | 天津安琪尔集团有限公司 | Fire-resistant cable for ship |
| CN1588563A (en) * | 2004-10-15 | 2005-03-02 | 上海胜武电缆有限公司 | Flexible fire-proof cable and its producing process and producing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1817816A (en) | 2006-08-16 |
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