CN101488374B - Insulation high temperature fire resisting electric cable made of soft ceramic - Google Patents
Insulation high temperature fire resisting electric cable made of soft ceramic Download PDFInfo
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- CN101488374B CN101488374B CN2009100679327A CN200910067932A CN101488374B CN 101488374 B CN101488374 B CN 101488374B CN 2009100679327 A CN2009100679327 A CN 2009100679327A CN 200910067932 A CN200910067932 A CN 200910067932A CN 101488374 B CN101488374 B CN 101488374B
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Abstract
The invention relates to a soft ceramics insulation high-temperature fire-resistant cable which is specially used in a fire-fighting system and high-temperature workplace. A soft ceramics insulation material is coated on a cable conductor. The cable is soft between minus 40 DEG C and 200 DEG C, and can become a hard ceramics material when baked under a flame over 500 DEG C. 20% -22% of organic silica 704, 1%-2% of DCBPO, and 14%-16% of sintering additive Y203 are firstly added into 65%-60% of zirconia and then coated on the cable conductor after being processed by a stirring mill and an internal mixer; under room temperature, the zirconia particles and sintering additives are adhered together by the vulcanized organic silicon adhesive. The product has high production efficiency and fast production speed which can be 80 meters per minute and is dozens times of an ordinary mica tape fire-resistant cable. The invention has good fire-resistant property and can become a ceramics shape when baked under a flame over 500 DEG C; under the condition of fixing pavement, the normal working environment temperature can reach 850 DEG C. The invention has good softness and the same softness between minus 40 DEG C and 200 DEG C with a polymer material cable.
Description
Technical field
The invention belongs to the cable technology field, relate to a kind of insulation high temperature fire resisting electric cable made of soft ceramic that is specifically designed to fire-fighting system and hot operation place.
Background technology
At present fire-resisting cable adopts mica tape and macromolecular material compound inslation or two kinds of fire-resistant modes of mineral insulation metallic sheath basically, and all there is different defectives in this dual mode in actual production and use.Mica tape and macromolecular material compound inslation are mixture necessarily to be stained with in advance prefabricated mica powder adding make banded back wrapped on cable conductor, and then outside the mica lapping layer, extrude macromolecular materials such as layer of polyethylene or polyvinyl chloride, form one deck composite fire insulating barrier, mainly there is the defective of several aspects in this technology.1, percent defective height: percent defective is high because the mica characteristic is highly brittle in system band process, and can not do too thick of mica tape otherwise can rupture can't be crooked or crooked the time, 2, tensile strength is low: the tensile strength of mica tape is extremely low, have only mica tape is bonded on the glass strap and could uses in order to improve tensile strength, 3, inefficiency: because mica tape is wrapped on cable conductor, hour operating efficiency is very low when the cross-section of cable, and per minute can only be produced 1-2 rice.4, security performance is relatively poor: because the macromolecular material that is extruded in the mica lapping layer at high temperature can decompose or melt, cause danger thereby the mica tape that loses protective layer is easy to be damaged.Mineral insulation metallic sheath fire-resisting cable is that powdery magnesium oxide is extruded on the conductor thread core, thereby and then coat copper or stainless steel sheath in magnesium oxide outside and reach fire-resistant purpose, the main defective of several aspects that exists of this technology, 1, manufacture difficulty is big: powdery magnesium oxide is extruded on the cable conductor needs special equipment with coating copper or stainless steel sheath, and the general enterprise of complex process can't produce at all.2, cost height: owing to adopt copper or stainless steel sheath that its material cost is obviously improved.3, difficulty of construction is big: owing to adopt metallic sheath to make cable bring very big inconvenience to construction as the hard of steel pipe, and especially particularly outstanding at the less scene of construction area.
Summary of the invention
The present invention be a kind of be the high temperature fire resisting electric cable of insulation with soft pottery, mainly be that to solve existing cable production efficiency low, fire resistance is poor, the inconvenient problem of cable construction really up to the mark.
Insulation high temperature fire resisting electric cable made of soft ceramic of the present invention is to coat soft ceramic insulating material outside cable conductor.
Soft ceramic insulating material of the present invention is soft between 40 degrees below zero to 200 degree Celsius, can become rigid ceramic material under the flame barbecue more than 500 degree.
Soft ceramic insulating material composition of the present invention and weight percent content are as follows:
Zirconia 60%-65%,
Organic silica gel 704 20%-22%,
Two 24 1%-2% of vulcanizing agent,
Sintering aid Y
2O
314%-16%.
The preparation method of insulation high temperature fire resisting electric cable made of soft ceramic of the present invention is: add 20%-22% organic silica gel 704,1%-2% vulcanizing agent two 24 and 14%-16% sintering aid Y in the 60%-65% zirconia
2O
3 Through being coated on the cable conductor after mixer and the banbury processing; Organic silica gel after zirconia particles and sintering aid cure in the normal temperature situation is stained with and is combined; Because so very good its integral body of elasticity of silica gel externally has preferably flexibility at normal temperatures; Silica gel at high temperature decomposes rapidly when cable is in the flame; At this moment sintering aid is frozen into netted and zirconia forms a solid protective sleeve together; Zirconia and sintering aid are sintered the formation ceramics insulator when flame temperature reaches certain temperature; Make supply line's normal operation
Key property of the present invention has, the production efficiency height: speed of production can reach 80 meters of per minutes, is tens times of ordinary mica tape fire-resisting cable.Fire resistance is good: can become ceramic-like under the barbecue of the above flame of 500 degree, its normal operation circumstances temperature can reach 850 degree under the situation of fixedly laying.Softness is good: the pliability between 40 degrees below zero to 200 degree is the same with the macromolecular material cable soft.
Embodiment
Embodiment 1: at first according to percentage by weight (down together) 65% zirconia, 14% sintering aid Y
2O
3Ratio put into banbury after stirring with mixer, it is two 24 to add 20% organic silica gel 704,1% vulcanizing agent simultaneously, is coated on the cable conductor 1 after banburying is good, passes through high temperature vulcanized the getting final product of 300-350 degree again.
Product is put into ageing oven after stablizing in 2 hours, at 2 hours cryogenic tensile elongation at breaks 280% of subzero 40 constant temperature Celsius, low-temperature bending does not ftracture.At 2 hours drawing by high temperature elongation at breaks 350% of 200 degree constant temperature Celsius, reach designing requirement fully.
Product is stable after 500 degree high-temperature bakings Celsius 2 hours through 2 hours, soft ceramic insulating layer full solidification.
Product is the bunchy burning after stablizing in 2 hours, and at flame temperature 800-850 Celsius, energising voltage 1000V burnt 90 minutes, cooled off 15 minutes, and fuse does not have disconnection, and bulb is working properly, and conductor is good.Reach the GB/T19216.21-2003 requirement fully.
Embodiment 2: at first according to 63% zirconia, 15% sintering aid Y
2O
3Ratio put into banbury after stirring with mixer, it is two 24 to add 21% organic silica gel 704,1% vulcanizing agent simultaneously, is coated on the cable conductor 1 after banburying is good, passes through high temperature vulcanized the getting final product of 300-350 degree again.
Product is put into ageing oven after stablizing in 2 hours, at 2 hours cryogenic tensile elongation at breaks 287% of subzero 40 constant temperature Celsius, low-temperature bending does not ftracture, and at 2 hours drawing by high temperature elongation at breaks 360% of 200 degree constant temperature Celsius, reaches designing requirement fully.
Product is stable after 500 degree high-temperature bakings Celsius 2 hours through 2 hours, soft ceramic insulating layer full solidification.
Product is the bunchy burning after stablizing in 2 hours, and at flame temperature 800-850 Celsius, energising voltage 1000V burnt 90 minutes, cooled off 15 minutes, and fuse does not have disconnection, and bulb is working properly, and conductor is good.Reach the GB/T19216.21-2003 requirement fully.
Embodiment 3: at first according to 60% zirconia, 16% sintering aid Y
2O
3Ratio put into banbury after stirring with mixer, it is two 24 to add 22% organic silica gel 704,2% vulcanizing agent simultaneously, is coated on the cable conductor 1 after banburying is good, passes through high temperature vulcanized the getting final product of 300-350 degree again.
Product is put into ageing oven after stablizing in 2 hours, at 2 hours cryogenic tensile elongation at breaks 295% of subzero 40 constant temperature Celsius, low-temperature bending does not ftracture, and at 2 hours drawing by high temperature elongation at breaks 367% of 200 degree constant temperature Celsius, reaches designing requirement fully.
Product is stable after 500 degree high-temperature bakings Celsius 2 hours through 2 hours, soft ceramic insulating layer full solidification.
Product is the bunchy burning after stablizing in 2 hours, and at flame temperature 800-850 Celsius, energising voltage 1000V burnt 90 minutes, cooled off 15 minutes, and fuse does not have disconnection, and bulb is working properly, and conductor is good.Reach the GB/T19216.21-2003 requirement fully.
Claims (2)
1. an insulation high temperature fire resisting electric cable made of soft ceramic is characterized in that coating soft ceramic insulating material outside cable conductor, and soft ceramic insulating material composition and weight percent content are as follows:
Zirconia 60%-65%,
Organic silica gel 704 20%-22%,
Two 24 1%-2% of vulcanizing agent,
Sintering aid Y
2O
314%-16%.
2. insulation high temperature fire resisting electric cable made of soft ceramic as claimed in claim 1 is characterized in that described soft ceramic insulating material is soft, can become rigid ceramic material under the flame barbecue more than 500 degree between 40 degrees below zero to 200 degree Celsius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100679327A CN101488374B (en) | 2009-02-24 | 2009-02-24 | Insulation high temperature fire resisting electric cable made of soft ceramic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100679327A CN101488374B (en) | 2009-02-24 | 2009-02-24 | Insulation high temperature fire resisting electric cable made of soft ceramic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101488374A CN101488374A (en) | 2009-07-22 |
| CN101488374B true CN101488374B (en) | 2010-12-29 |
Family
ID=40891209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100679327A Expired - Fee Related CN101488374B (en) | 2009-02-24 | 2009-02-24 | Insulation high temperature fire resisting electric cable made of soft ceramic |
Country Status (1)
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| CN (1) | CN101488374B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737767A (en) * | 2011-04-02 | 2012-10-17 | 上海永进电缆(集团)有限公司 | Fire-resistant soft ceramic cable |
| CN102320821A (en) * | 2011-06-22 | 2012-01-18 | 北京航空航天大学 | Fireproof high-temperature resistant ceramic precursor coating suitable for cable lead |
| CN102280210B (en) * | 2011-08-10 | 2012-07-04 | 江苏远方电缆厂有限公司 | Process for processing magnesium oxide mineral insulated fireproof cable |
| CN104725024A (en) * | 2013-12-19 | 2015-06-24 | 南宁市磁汇科技有限公司 | Preparation method of flame-retardant material |
| CN104193364B (en) * | 2013-12-19 | 2017-03-01 | 南宁市磁汇科技有限公司 | Fireproof meterial |
| CN104193365A (en) * | 2013-12-19 | 2014-12-10 | 南宁市磁汇科技有限公司 | Preparation method of fire-resistant blanket |
| CN104240796B (en) * | 2014-09-10 | 2016-09-07 | 江苏远方电缆厂有限公司 | A kind of ceramics insulator and preparation comprise the method for this ceramics insulator cable |
| CN104299679A (en) * | 2014-09-26 | 2015-01-21 | 东莞市日新传导科技股份有限公司 | Fire-proof soft-ceramic cable |
| CN104505154B (en) * | 2014-12-03 | 2016-09-28 | 湖北亿佳欧电子陶瓷股份有限公司 | Ceramic fire-proof insulation cable and the preparation method of insulating layer material |
| CN104658664A (en) * | 2015-02-02 | 2015-05-27 | 张戈 | Anti-combustion power cord |
| CN109096807A (en) * | 2018-06-15 | 2018-12-28 | 荣马电器有限公司 | A kind of comprehensive suspension and support of high temperature resistant |
-
2009
- 2009-02-24 CN CN2009100679327A patent/CN101488374B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101488374A (en) | 2009-07-22 |
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Granted publication date: 20101229 Termination date: 20210224 |