CN105357781A - Carbon-fiber braiding radiation heating band with reflection structure and preparation method thereof - Google Patents
Carbon-fiber braiding radiation heating band with reflection structure and preparation method thereof Download PDFInfo
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- CN105357781A CN105357781A CN201510795705.1A CN201510795705A CN105357781A CN 105357781 A CN105357781 A CN 105357781A CN 201510795705 A CN201510795705 A CN 201510795705A CN 105357781 A CN105357781 A CN 105357781A
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Abstract
The invention discloses a carbon-fiber braiding radiation heating band with a reflection structure and a preparation method thereof. The heating band comprises a front side transmitting layer and a back side reflection layer; and an amount ratio of carbon fibers to high-reflectivity fibers in the front side transmitting layer is 5:1 to 10:1 and an amount ratio of carbon fibers to high-reflectivity fibers in the back side reflection layer is 1:5 to 1:10. The preparation method includes: (1), determining amounts of carbon fibers and high-reflectivity fibers respectively; (2), carrying out impurity removing processing on the carbon fibers and high-reflectivity fibers and then coating the surfaces of the carbon fibers and high-reflectivity fibers with impregnating compounds; (3), braiding the carbon fibers and high-reflectivity fibers coated with the impregnating compounds in a mixed braiding mode to form a band type fabric; and (4), after braiding, removing the impregnating compounds from the surfaces of the carbon fibers and high-reflectivity fibers by using an instantaneous high temperature method. According to the invention, high reflectivity and high emissivity configuration is realized at a specific part of the back side of the heating band; the overall radiation band has a self-reflection characteristic; and orientation changing and adjusting can be carried out on the radiation energy of the heating body of the band type braided fabric.
Description
Technical field
The present invention relates to a kind of carbon fiber knit radiation heating band with catoptric arrangement and preparation method thereof.
Background technology
Electric heating is current industry, civilian even aerospace general mode of heating, and in different heating equipment, the heating element of preparation is the critical component reaching high efficiency heating.Current electrical heating elements can be divided into middle low temperature and high-temperature heating two categories according to the temperature requirement difference of heated body, and heat transfer mode wherein is also divided into heat transfer, thermal convection and thermal radiation three kinds.At present for the firing equipment in vacuum environment, its main mode of heating is thermal radiation heating, this mode of heating can realize directly exchanging fast of heat, the molecular atoms vibrational structure mechanism of reasonable preparation calandria and heated body, the object of large depth consistency heating can be reached, the heating effect of desired homogeneous can be reached completely.Current radiation heating body is metal material and ceramic material, and a part adopts carbon material as the efficient heat emitting medium of radiation heating.And in carbon material heat emitting medium, carbon fiber is the raw materials of first-selected high-efficiency heater, the phosphorus content of carbon fiber more than 93%, close to absolute black body, thermal coefficient of expansion in vacuum environment and high and low temperature environment is almost equal to zero, can the dimensionally stable effect of realizing ideal.In addition, carbon fiber is also a kind of flexible carbon material, there is the excellent specific properties such as high strength, high-modulus, high temperature resistant, corrosion-resistant, hot environment impurity burst size are few, carry out the manufacture of electric radiation equipment with carbon fiber as radiation heater, be particularly suitable for multiple fields such as industry heating, civil heating, low-temperature bake equipment.
But feed back using carbon fiber as the effect of radiant heating in vacuum body at present, also there are some problems in the calandria of this carbon material.The first, can there is a large amount of fiber lousiness fracture of wires, the fabric resistor had a strong impact on and the uniformity of radiation characteristic in carbon fiber flexible calandria in processing and assembling process; Second, the self-fixing effect of carbon fiber flexible heater is bad, the shaping glue of current employing is the composite adhesive of various synthetic resin, once with carbon fiber filament processbearing astrocyte composite construction, there will be in long-term high/low temperature change procedure and possess micro-crack, affect resistance homogeneity and the mechanical characteristic of electric heating element, prolonged application can cause the damage of overall electric heating element; 3rd, carbon fiber belongs to the higher intense radiation material of emissivity, this material is all close to absolute black body in all directions and position, reach the high efficient radiation effect to particular orientation, need additional reflection accessory, add the difficulty of assembling, omnibearing diffuse radiation simultaneously also reduces the utilance of radiation heating energy.
Summary of the invention
Object of the present invention, in order to solve the technical problem that in prior art, carbon material calandria exists, provides a kind of carbon fiber knit radiation heating band with catoptric arrangement and preparation method thereof.
In order to solve upper technical problem, technical scheme of the present invention is:
The application in carbon fiber knit radiation heating band prepared by high reflectance fiber, and described high reflectance fiber is metallic fiber or the composite fibre with reflectance coating.
Preferably, described metallic fiber is copper fiber, aluminum fiber or stainless steel fibre; Composite fibre with reflectance coating is metal-coated carbon fibers or metal coated ceramic fiber.
With a carbon fiber knit radiation heating band for catoptric arrangement, comprise front side emitter layer and backside reflection layer, in front side emitter layer, the usage ratio of carbon fiber and high reflectance fiber is 5:1-10:1; In backside reflection layer, the usage ratio of carbon fiber and high reflectance fiber is 1:5-1:10.Backside reflection layer needs to be achieved by the amount ratio of adjustment carbon fiber and reflecting fibres, and the Thickness Ratio of backside reflection layer and front side emitter layer requires to adjust flexibly according to the banded fabric thickness of entirety and heating power.
Preferably, the interface of front side emitter layer and backside reflection layer is all prepared with high reflectance fiber.
Preferably, described carbon fiber is any one in T300, T700 or T800 carbon fiber.
The preparation method of the carbon fiber knit radiation heating band of above-mentioned band catoptric arrangement, comprises the steps:
1) consumption of carbon fiber and high reflectance fiber is determined respectively; This consumption determines according to required heating power and radiation heating energy requirement.
2) after carrying out removal of impurities process to carbon fiber and reflecting fibres, at the surface-coated size of carbon fiber and high reflectance fiber; The effective interface applied when certain size can realize different fibers mixture at fiber surface combines.
3) form of mixed weaving is adopted to be woven into webbing on the carbon fiber and high reflectance fiber that are coated with size; If the intensity that webbing locally needs the intensity of bearing to be greater than other position needs to be born, carries out local to it and weaves strengthening;
4) size of TRANSIENT HIGH TEMPERATURE method removing carbon fiber and high reflectance fiber surface is adopted after braiding.
Preferably, step 2) in, described size accounts for the 5-10% of total weight of fiber.The size of this use amount can make to infiltrate better between different types of fiber, fit.
Preferably, step 2) in, described size is thermoplastic composite adhesive, is the mixture of thermoplastic resin and thermosetting resin.Its weight ratio is according to the flexible resize ratio of actual requirement.
Further preferably, described thermoplastic resin is one or more in polyurethane resin, polyphenylene sulfide, polyvinyl resin or acrylic resin; Described thermosetting resin is one or more in phenolic resins, epoxy resin, unsaturated polyester resin or silica column.
Preferably, step 4) in, adopt the mode of brief energization to provide TRANSIENT HIGH TEMPERATURE, the voltage of energising is 100-220V, and the time of brief energization is 1-3s.
Due to carbon fiber, as radiant heating in vacuum cognition, there are the following problems.The first, can there is a large amount of fiber lousiness fracture of wires, the fabric resistor had a strong impact on and the uniformity of radiation characteristic in carbon fiber flexible calandria in processing and assembling process; Second, the self-fixing effect of carbon fiber flexible heater is bad, the shaping glue of current employing is the composite adhesive of various synthetic resin, once with carbon fiber filament processbearing astrocyte composite construction, there will be in long-term high/low temperature change procedure and possess micro-crack, affect resistance homogeneity and the mechanical characteristic of electric heating element, prolonged application can cause the damage of overall electric heating element; 3rd, carbon fiber belongs to the higher intense radiation material of emissivity, this material is all close to absolute black body in all directions and position, reach the high efficient radiation effect to particular orientation, need additional reflection accessory, add the difficulty of assembling, omnibearing diffuse radiation simultaneously also reduces the utilance of radiation heating energy.Visible, the calandria of existing carbon fiber knit is more difficult realizes one of them of following performance: the efficiency utilization of the uniformity of heating, self-fixing ability and radiation, is more difficult to realization and takes into account above three kinds of performances.The shuffling of carbon fiber and high reflectance fiber is utilized in the present invention, because high reflectance fiber is metallic fiber, there is good elasticity and rigidity, achieve flexibility and the rigidity of heating tape, and then achieve the flexibility sizing of heating tape, the fracture of wire preventing the excessive deformation of carbon fiber to cause, it also avoid on carbon fiber, to apply the impact on heating tape resistance homogeneity and mechanical property of micro-crack that shaping glue occurs.
Simultaneously, high reflectance fiber has good radiation reflective ability, with carbon fiber shuffling, improves the orienting reflex ability of heating tape to radiant energy, achieve effective utilization of radiation, solve traditional carbon fiber heating body and the drawback needing additional reflection accessory is installed.
The invention has the beneficial effects as follows:
1, carbon fiber radiation heating band of the present invention adopts the mixed weaving of high emissivity carbon fiber and high reflectance fiber, strengthened by the braiding that mixes of braiding structure local, achieve the target that the flexibility of integral radiation heating tape and rigidity have both, on the basis that can bend arbitrarily, fiber is made to possess certain toughness and elasticity, the change in size under different temperatures environment can be adapted to, there is extremely strong assembling adaptability.
2, carbon fiber radiation heating band of the present invention, by mixed weaving structure, the configuration of high reflectance and high emissivity is realized at the back side, heating tape privileged site, integral radiation band possesses self-reflection characteristic, the emittance of ribbon fabric calandria can be carried out orientation change and adjustment, the maximal efficiency realizing carbon fiber radiation heating physical efficiency utilizes.
3, the front normal direction total emissivity that described carbon fiber and high reflectance fiber hybrid weave radiation heating band can reach more than 0.9, and the reflectivity at the back side can reach less than 0.6, radiant energy orientation can be focused on a certain specific direction, improves the utilance of radiant energy.
Accompanying drawing explanation
Fig. 1 is the carbon fiber knit radiation heating band schematic diagram of band catoptric arrangement.
Wherein, 1, front side emitter layer, 2, backside reflection layer.
Embodiment
Below in conjunction with specific embodiments and the drawings, the invention will be further described.
Embodiment 1
T300 carbon fiber and stainless steel fibre is adopted to carry out mixing knitting forming heating tape, number of braided strand is 12 strands, wherein the consumption in stainless steel fibre and T300 carbon fiber reflector 2 is overleaf 5:1, and be 1:5 at the stainless steel fibre of front side emitter layer 1 and the usage ratio of T300 carbon fiber, first TRANSIENT HIGH TEMPERATURE method is adopted by carbon fiber to remove surface size agent, energising adopts thyristor regulating depressor to be adjusted to 150V voltage, and conduction time is 3 seconds.Carbon fiber after removing sizing agent and stainless steel fibre precoating size before weaving, coating adopts the mode of dipping to carry out, the ratio that the assorted fibre of coating size sets according to backside reflection layer 2 and front side emitter layer 1 weaves, adopt TRANSIENT HIGH TEMPERATURE method to be energized after braiding and remove the size on surface, silicon-controlled voltage regulation is set as 220V, conduction time was 2 seconds, the unit resistance of the heating tape after removing size is 10 ohm/meter, front normal direction total emissivity reaches 0.91, and backside reflection rate is 0.58.
Embodiment 2
T700 carbon fiber and copper fiber is adopted to carry out mixing knitting forming heating tape, number of braided strand is 15 strands, wherein the consumption in copper fiber and T700 carbon fiber reflector 2 is overleaf 4:1, and be 1:4 at the stainless steel fibre of front side emitter layer 1 and the usage ratio of T700 carbon fiber, first TRANSIENT HIGH TEMPERATURE method is adopted by carbon fiber to remove surface size agent, energising adopts thyristor regulating depressor to be adjusted to 180V voltage, and conduction time is 2 seconds.Carbon fiber after removing sizing agent and copper fiber precoating size before weaving, coating adopts the mode of dipping to carry out, the ratio that the assorted fibre of coating size sets according to front side emitter layer 1 and backside reflection layer 2 weaves, adopt TRANSIENT HIGH TEMPERATURE method to be energized after braiding and remove the size on surface, silicon-controlled voltage regulation is set as 200V, conduction time was 3 seconds, the unit resistance of the heating tape after removing size is 8 ohm/meter, front normal direction total emissivity reaches 0.90, and backside reflection rate is 0.55.
Embodiment 3
T800 carbon fiber and aluminum fiber is adopted to carry out mixing knitting forming heating tape, number of braided strand is 20 strands, wherein the consumption in aluminum fiber and T800 carbon fiber reflector 2 is overleaf 9:1, and be 1:9 at the aluminum fiber of front side emitter layer 1 and the usage ratio of T800 carbon fiber, first TRANSIENT HIGH TEMPERATURE method is adopted by carbon fiber to remove surface size agent, energising adopts thyristor regulating depressor to be adjusted to 220V voltage, and conduction time is 1 second.Carbon fiber after removing sizing agent and aluminum fiber precoating size before weaving, coating adopts the mode of dipping to carry out, the ratio that the assorted fibre of coating size sets according to backside reflection layer 2 and front side emitter layer 1 weaves, adopt TRANSIENT HIGH TEMPERATURE method to be energized after braiding and remove the size on surface, silicon-controlled voltage regulation is set as 210V, conduction time was 3 seconds, the unit resistance of the heating tape after removing size is 5 ohm/meter, front normal direction total emissivity reaches 0.93, and backside reflection rate is 0.51.
Embodiment 4
T300 carbon fiber and nickel coating carbon fiber is adopted to carry out mixing knitting forming heating tape, number of braided strand is 18 strands, wherein the consumption in nickel coating carbon fiber and T300 carbon fiber reflector 2 is overleaf 5:1, and be 1:5 at the nickel coating carbon fiber of front side emitter layer 1 and the usage ratio of T300 carbon fiber, first TRANSIENT HIGH TEMPERATURE method is adopted by carbon fiber to remove surface size agent, energising adopts thyristor regulating depressor to be adjusted to 220V voltage, and conduction time is 1 second.Carbon fiber after removing sizing agent and nickel coating carbon fiber precoating size before braiding, coating adopts the mode of dipping to carry out, the ratio that the assorted fibre of coating size sets according to backside reflection layer 2 and front side emitter layer 1 weaves, adopt TRANSIENT HIGH TEMPERATURE method to be energized after braiding and remove the size on surface, silicon-controlled voltage regulation is set as 220V, conduction time was 2 seconds, the unit resistance of the heating tape after removing size is 7 ohm/meter, front normal direction total emissivity reaches 092, and backside reflection rate is 050.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but the restriction not to invention protection range; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still in protection scope of the present invention.
Claims (10)
1. the application in carbon fiber knit radiation heating band prepared by high reflectance fiber, and described high reflectance fiber is metallic fiber or the composite fibre with reflectance coating.
2. application according to claim 1, is characterized in that: described metallic fiber is copper fiber, aluminum fiber or stainless steel fibre; Composite fibre with reflectance coating is metal-coated carbon fibers or metal coated ceramic fiber.
3. the carbon fiber knit radiation heating band with catoptric arrangement, is characterized in that: comprise front side emitter layer and backside reflection layer, in front side emitter layer, the usage ratio of carbon fiber and the high reflectance fiber described in claim 1 is 5:1-10:1; In backside reflection layer, the usage ratio of carbon fiber and the high reflectance fiber described in claim 1 is 1:5-1:10.
4. carbon fiber knit radiation heating band according to claim 3, is characterized in that: described high reflectance fibrage is all used in the interface of front side emitter layer and backside reflection layer.
5. carbon fiber knit radiation heating band according to claim 3, is characterized in that: described carbon fiber is any one in T300, T700 or T800 carbon fiber.
6. the preparation method of the carbon fiber knit radiation heating band of the arbitrary described band catoptric arrangement of claim 3-5, is characterized in that: comprise the steps:
1) consumption of carbon fiber and high reflectance fiber is determined respectively;
2) after carrying out removal of impurities process to carbon fiber and high reflectance fiber, at the surface-coated size of carbon fiber and high reflectance fiber;
3) form of mixed weaving is adopted to be woven into webbing on the carbon fiber and high reflectance fiber that are coated with size; If the intensity that webbing locally needs the intensity of bearing to be greater than other position needs to be born, carries out local to it and weaves strengthening;
4) size of TRANSIENT HIGH TEMPERATURE method removing carbon fiber and high reflectance fiber surface is adopted after braiding.
7. preparation method according to claim 6, is characterized in that: step 2) in, described size accounts for the 5-10% of total weight of fiber.
8. preparation method according to claim 6, is characterized in that: step 2) in, described size is thermoplastic composite adhesive, is the mixture of thermoplastic resin and thermosetting resin.
9. preparation method according to claim 8, is characterized in that: described thermoplastic resin is one or more in polyurethane resin, polyphenylene sulfide, polyvinyl resin or acrylic resin; Described thermosetting resin is one or more in phenolic resins, epoxy resin, unsaturated polyester resin or silica column.
10. preparation method according to claim 6, is characterized in that: step 4) in, adopt the mode of brief energization to provide TRANSIENT HIGH TEMPERATURE, the voltage of energising is 100-220V, and the time of brief energization is 1-3s.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510795705.1A CN105357781B (en) | 2015-11-18 | 2015-11-18 | A kind of carbon fiber braiding radiant heating band with catoptric arrangement and preparation method thereof |
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| CN201510795705.1A CN105357781B (en) | 2015-11-18 | 2015-11-18 | A kind of carbon fiber braiding radiant heating band with catoptric arrangement and preparation method thereof |
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| CN105357781B CN105357781B (en) | 2018-03-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285499A (en) * | 2016-08-11 | 2017-01-04 | 山东中恒碳纤维科技发展有限公司 | A kind of continuous carbon fibre composite material sucker rod with electric heating function and preparation method thereof |
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| CN1543264A (en) * | 2003-04-10 | 2004-11-03 | 整体技术公司 | Low cost heating devices manufactured from conductive loaded resin-based materials |
| CN101203075A (en) * | 2006-12-15 | 2008-06-18 | 逢甲大学 | Laminating fabric heater and preparation thereof |
| CN201976271U (en) * | 2010-08-13 | 2011-09-14 | 刘宁和 | Conductive fiber heating wire |
| CN103194842A (en) * | 2013-04-09 | 2013-07-10 | 北京光华纺织集团有限公司 | Metal-wire-containing electric heating fabric suitable for severe environment |
| CN203290610U (en) * | 2013-06-07 | 2013-11-20 | 西南大学 | Anti-radiation electric blanket |
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2015
- 2015-11-18 CN CN201510795705.1A patent/CN105357781B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1543264A (en) * | 2003-04-10 | 2004-11-03 | 整体技术公司 | Low cost heating devices manufactured from conductive loaded resin-based materials |
| CN101203075A (en) * | 2006-12-15 | 2008-06-18 | 逢甲大学 | Laminating fabric heater and preparation thereof |
| CN201976271U (en) * | 2010-08-13 | 2011-09-14 | 刘宁和 | Conductive fiber heating wire |
| CN103194842A (en) * | 2013-04-09 | 2013-07-10 | 北京光华纺织集团有限公司 | Metal-wire-containing electric heating fabric suitable for severe environment |
| CN203290610U (en) * | 2013-06-07 | 2013-11-20 | 西南大学 | Anti-radiation electric blanket |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106285499A (en) * | 2016-08-11 | 2017-01-04 | 山东中恒碳纤维科技发展有限公司 | A kind of continuous carbon fibre composite material sucker rod with electric heating function and preparation method thereof |
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