CN107567120B - Production method of carbon fiber heating cable - Google Patents

Production method of carbon fiber heating cable Download PDF

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CN107567120B
CN107567120B CN201710791439.4A CN201710791439A CN107567120B CN 107567120 B CN107567120 B CN 107567120B CN 201710791439 A CN201710791439 A CN 201710791439A CN 107567120 B CN107567120 B CN 107567120B
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carbon fiber
silica gel
cable
coated
fiber cable
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CN107567120A (en
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徐志强
张艳兵
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Gansu Huaqiang New Energy Technology Development Co ltd
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Abstract

The invention discloses a production method of a carbon fiber heating cable, which mainly comprises the following steps of S1, rubber mixing: sequentially adding raw rubber, a vulcanizing agent, a defrosting agent and color master batch into the double-roller open mill, and refining to obtain coated silica gel with uniform color; s2, primary coating of the carbon fiber precursor: coating the carbon fiber precursor for one time by using a silica gel extruder a at 350 ℃; s3, secondary coating of carbon fiber precursors: and (3) carrying out secondary coating on the carbon fiber precursor after the primary coating by using a silica gel extruder b at the temperature of 300 ℃, and finally preparing the carbon fiber heating cable. The invention adopts the secondary coating technology, increases the outer diameter thickness of the carbon fiber heating cable, enhances the centrality and toughness of the cable, and prolongs the service life of the cable; the proportioning method of the coated silica gel is reasonable, and the defrosting proportion is increased, so that the anti-frosting capability of the finished product of the carbon fiber heating cable is improved, and the using effect is improved.

Description

Production method of carbon fiber heating cable
Technical Field
The invention belongs to the technical field of electric heating, and particularly relates to a production method of a carbon fiber heating cable.
Background
The carbon fiber heating technology is characterized in that a carbon fiber heating cable is connected to a metal power line (cold wire), and after the carbon fiber heating cable is electrified, far infrared rays are generated by the carbon fiber heating cable to radiate energy outwards to achieve the purpose of heating. The carbon fiber heating cable and the application thereof have the advantages of high thermal performance, convenience in installation, low maintenance cost, safety and reliability in use and the like, and the electric heat conversion efficiency is improved by 30% compared with that of metal heating, and the electric heat efficiency is about 100%.
At present, the domestic production process of the carbon fiber heating cable is to perform one-step coating molding on silica gel, and because the carbon fiber is originally flat, the defect of uneven coating often occurs in the one-step coating process, so that the service life of the produced carbon fiber heating cable is short; and the carbon fiber heating cable produced according to the one-time coating production process is applied to the northwest, northeast and other cold areas, and white frost often appears on the cable, so that the use effect of the carbon fiber heating cable is influenced.
Disclosure of Invention
In view of the above disadvantages, the present invention aims to provide a method for producing a carbon fiber heating cable, which can improve the use effect and prolong the service life.
The invention realizes the purpose, and adopts the technical scheme that: a production method of a carbon fiber heating cable comprises the following steps:
S1, mixing rubber:
firstly, after a double-roller open mill is electrified, cooling water is ensured to be introduced into a roller of the double-roller open mill, and the mixing temperature is below 40 ℃;
adding 5-10kg of raw rubber and 75-150g of vulcanizing agent into the double-roller open mill in sequence, mixing the rubber for 2-3min until the raw rubber is soft and smooth, adding 15-30g of defrosting agent and 25-50g of color master batch in sequence, and continuously mixing the rubber for 5-8 min to obtain the coated silica gel with uniform color;
S2, primary coating of the carbon fiber precursor:
③, after the silica gel extruder a is electrified, the temperature is adjusted to 350 ℃ to preheat an oven of the silica gel extruder a;
fixing the carbon fiber precursor on a rotating shaft of the silica gel extruder a, opening a machine head of the silica gel extruder a, assembling a matched die a with required size, and penetrating the carbon fiber precursor with the machine head through a die opening;
after the oven temperature of the silica gel extruder a reaches 350 ℃, a traction wire a penetrates through the oven and passes through a talcum powder device, and finally the traction wire is wound and fixed on a wire guide shaft a;
⑥, feeding the coated silica gel into a charging barrel of the silica gel extruder a from a forced feeding device, and moving the coated silica gel to the head direction of the silica gel extruder a through the rotation of a screw rod of the silica gel extruder a, so that the carbon fiber precursor is coated with the silica gel at the head of the silica gel extruder a to obtain a primary coated carbon fiber cable;
⑦, the primary coated carbon fiber cable continuously moves in the silica gel extruder a, is extruded and plasticized by a matched mould a and is finally extruded from a mould opening, and the silica gel extruder a is cooled by a cooling mechanism in the process;
adjusting the uniformity of the wire diameter of the extruded primary coated carbon fiber cable, binding the wire head of the primary coated carbon fiber cable with the pull wire a after the adjustment is finished, adjusting the speed of the primary coated carbon fiber cable by using a speed control device, and moving the primary coated carbon fiber cable along with the pull wire a to be automatically wound on a wire guide shaft a after the primary coated carbon fiber cable is adjusted to be consistent with the speed of the pull wire a;
S3, secondary coating of carbon fiber precursors:
⑨, after the silica gel extruder b is electrified, adjusting the temperature of an oven to 300 ℃ for preheating;
in the preheating process of the oven at the third (r), fixing a lead shaft a of the primary coated carbon fiber cable on a pay-off rack, opening a machine head of a silica gel extruder b, assembling a matched mould b with required size, and penetrating the primary coated carbon fiber cable with the machine head part through a mould opening;
Figure GDA0002455743610000031
After the temperature of the oven reaches 300 ℃, a traction wire b is sequentially penetrated through the oven, the printer, the oven and the high-pressure testing device, and finally, the traction wire b is fixedly wound on a wire guide shaft b;
Figure GDA0002455743610000032
Feeding the coated silica gel into a charging barrel of a silica gel extruder b from a forced feeding device, enabling the coated silica gel to move towards a machine head direction of the coated silica gel through the rotation of a screw rod of the silica gel extruder b, and obtaining a secondary coated carbon fiber cable after the primary coated carbon fiber cable is coated with the silica gel again at the machine head, dried, printed, dried again and tested by voltage;
Figure GDA0002455743610000033
The secondary coated carbon fiber cable continuously moves in a silica gel extruder b, is extruded and plasticized by a matched mould b, and finally is extruded out of the carbon fiber heating cable from a mould opening;
Figure GDA0002455743610000034
After extruding secondary cladding carbon fiber cable, carry out the regulation of line diameter uniformity, tie up the end of a thread of secondary cladding carbon fiber cable and pull wire b together after the regulation finishes, carry out the speed governing through speed control device, after secondary cladding carbon fiber cable and pull wire b speed regulation unanimity, secondary cladding carbon fiber cable removes to automatic winding on wire axle b along with pull wire b can.
The mass ratio of the raw rubber to the vulcanizing agent to the defrosting agent to the color master batch is 1000:15:3: 5.
Compared with the prior art, the invention has the following beneficial effects:
1. The invention adopts a secondary coating technology, and secondary coating is carried out on the basis of primary coating, so that the outer diameter thickness of the carbon fiber heating cable is increased, the centrality and the toughness of the cable are further enhanced, and the service life of the cable is prolonged;
2. The proportioning method for producing the coated silica gel is reasonable, and the defrosting proportion is increased, so that the anti-frosting capability of the finished product of the carbon fiber heating cable is improved;
3. When the carbon fiber heating cable produced by the invention is used, the radiation is uniform, the phenomenon of frosting and frosting is avoided, and the use effect is improved;
4. The method of the invention is reasonable, and the produced product has long service life and good use effect.
Detailed Description
Example 1: a production method of a carbon fiber heating cable comprises the following steps:
S1, mixing rubber:
firstly, after a double-roller open mill is electrified, cooling water is ensured to be introduced into a roller of the double-roller open mill, and the mixing temperature is below 40 ℃;
secondly, after 5kg of crude rubber and 75g of vulcanizing agent are sequentially added into the double-roller open mill, mixing the rubber for 2-3min until the crude rubber is soft and smooth, then sequentially adding 15g of defrosting agent and 25g of color master batch, and continuously mixing the rubber for 5-8 min to obtain the coated silica gel with uniform color;
S2, primary coating of the carbon fiber precursor:
③, after the silica gel extruder a is electrified, the temperature is adjusted to 350 ℃ to preheat an oven of the silica gel extruder a;
fixing the carbon fiber precursor on a rotating shaft of the silica gel extruder a, opening a machine head of the silica gel extruder a, assembling a matched die a with required size, and penetrating the carbon fiber precursor with the machine head through a die opening;
after the oven temperature of the silica gel extruder a reaches 350 ℃, a traction wire a penetrates through the oven and passes through the talcum powder device, and finally the traction wire is wound and fixed on a wire guide shaft a;
⑥, feeding the coated silica gel into a charging barrel of the silica gel extruder a from the forced feeding device, and rotating a screw rod of the silica gel extruder a to enable the coated silica gel to move towards the head of the silica gel extruder a, so that the carbon fiber precursor is coated with the silica gel at the head of the silica gel extruder a to obtain a primary coated carbon fiber cable;
seventhly, continuously moving the primary coated carbon fiber cable in the silica gel extruder a, extruding the cable by a matched mould a, drying the cable by an oven, plasticizing the cable, and finally extruding the cable from a mould opening, wherein the silica gel extruder a is cooled by a cooling mechanism in the process;
adjusting the uniformity of the wire diameter of the extruded primary coated carbon fiber cable, binding the wire head of the primary coated carbon fiber cable and a traction wire a together after the adjustment is finished, adjusting the speed of the primary coated carbon fiber cable and the traction wire a through a speed control device, and moving the primary coated carbon fiber cable along with the traction wire a to be automatically wound on a wire guide shaft a after the primary coated carbon fiber cable and the traction wire a are adjusted to be consistent in speed;
S3, secondary coating of carbon fiber precursors:
⑨, after the silica gel extruder b is electrified, adjusting the temperature of an oven to 300 ℃ for preheating;
in the preheating process of the oven at the third (r), fixing a lead shaft a of the primary coated carbon fiber cable on a pay-off rack, opening a machine head of a silica gel extruder b, assembling a matched mould b with required size, and penetrating the primary coated carbon fiber cable with the machine head part through a mould opening;
Figure GDA0002455743610000051
After the temperature of the oven reaches 300 ℃, a traction wire b is sequentially penetrated through the oven, the printer, the oven and the high-pressure testing device, and finally, the traction wire b is fixedly wound on a wire guide shaft b;
Figure GDA0002455743610000052
Feeding the coated silica gel into a charging barrel of a silica gel extruder b from a forced feeding device, enabling the coated silica gel to move towards a machine head of the coated silica gel through the rotation of a screw rod of the silica gel extruder b, coating the silica gel on the primary coated carbon fiber cable at the machine head again, drying, printing, drying again and testing voltage to obtain secondary coated carbon fiber cable A fiber cable;
Figure GDA0002455743610000061
The secondary coated carbon fiber cable continuously moves in a silica gel extruder b, is extruded by a matched mould b and is plasticized after being dried by an oven, and finally, a carbon fiber heating cable with the coating thickness of 5.5mm and the length of about 165m is extruded from a mould opening;
Figure GDA0002455743610000062
After carbon fiber heating cable extrudes, carry out the regulation of line diameter uniformity, tie up the end of a thread of carbon fiber heating cable and pull wire b together after the regulation finishes, carry out the speed governing through speed control device, carbon fiber heating cable and pull wire b speed regulation unanimous back, carbon fiber heating cable along with pull wire b remove to automatic winding on wire shaft b can.
Example 2:
Different from the example 1, 7.5kg of raw rubber, 112.5g of vulcanizing agent, 22.5g of defrosting agent and 37.5g of color master batch are added into a two-roll open mill in sequence to finally prepare the carbon fiber heating cable with the coating layer thickness of 5.5mm and the length of about 247.5 m.
Example 3:
Different from the example 1-2, 10kg of raw rubber, 150g of vulcanizing agent, 30g of defrosting agent and 50g of color master batch are sequentially added into a two-roll open mill, and finally the carbon fiber heating cable with the coating layer thickness of 5.5mm and the length of about 330m is prepared.
In examples 1-3 above, the amounts of raw rubber, vulcanizing agent, defrosting agent and color masterbatch added in the two-roll mill were determined according to the length of the carbon fiber discovery cable to be produced; the coating layer of the primary coated carbon fiber cable is heated again in the silica gel extruder b, then is extruded uniformly, and is coated for the second time, the thickness of the final coating layer is uniform, the thickness of the coating layer of the primary coated carbon fiber cable is 2.5mm, and the thickness of the coating layer after secondary coating is 5.5 mm.

Claims (2)

1. A production method of a carbon fiber heating cable is characterized by comprising the following steps: the method comprises the following steps:
S1, mixing rubber:
firstly, after a double-roller open mill is electrified, cooling water is ensured to be introduced into a roller of the double-roller open mill, and the mixing temperature is below 40 ℃;
adding 5-10kg of raw rubber and 75-150g of vulcanizing agent into the double-roller open mill in sequence, mixing the rubber for 2-3min until the raw rubber is soft and smooth, adding 15-30g of defrosting agent and 25-50g of color master batch in sequence, and continuously mixing the rubber for 5-8 min to obtain the coated silica gel with uniform color;
S2, primary coating of the carbon fiber precursor:
③, after the silica gel extruder a is electrified, the temperature is adjusted to 350 ℃ to preheat an oven of the silica gel extruder a;
fixing the carbon fiber precursor on a rotating shaft of the silica gel extruder a, opening a machine head of the silica gel extruder a, assembling a matched die a with required size, and penetrating the carbon fiber precursor with the machine head through a die opening;
after the oven temperature of the silica gel extruder a reaches 350 ℃, a traction wire a penetrates through the oven and passes through a talcum powder device, and finally the traction wire is wound and fixed on a wire guide shaft a;
⑥, feeding the coated silica gel into a charging barrel of the silica gel extruder a from a forced feeding device, and moving the coated silica gel to the head direction of the silica gel extruder a through the rotation of a screw rod of the silica gel extruder a, so that the carbon fiber precursor is coated with the silica gel at the head of the silica gel extruder a to obtain a primary coated carbon fiber cable;
⑦, the primary coated carbon fiber cable continuously moves in the silica gel extruder a, is extruded and plasticized by a matched mould a and is finally extruded from a mould opening, and the silica gel extruder a is cooled by a cooling mechanism in the process;
adjusting the uniformity of the wire diameter of the extruded primary coated carbon fiber cable, binding the wire head of the primary coated carbon fiber cable with the pull wire a after the adjustment is finished, adjusting the speed of the primary coated carbon fiber cable by using a speed control device, and moving the primary coated carbon fiber cable along with the pull wire a to be automatically wound on a wire guide shaft a after the primary coated carbon fiber cable is adjusted to be consistent with the speed of the pull wire a;
S3, secondary coating of carbon fiber precursors:
⑨, after the silica gel extruder b is electrified, adjusting the temperature of an oven to 300 ℃ for preheating;
in the preheating process of the oven at the third (r), fixing a lead shaft a of the primary coated carbon fiber cable on a pay-off rack, opening a machine head of a silica gel extruder b, assembling a matched mould with required size, and penetrating the primary coated carbon fiber cable with the machine head part through a mould opening;
Figure FDA0002455743600000021
After the temperature of the oven reaches 300 ℃, a traction wire b is sequentially penetrated through the oven, the printer, the oven and the high-pressure testing device, and finally, the traction wire b is fixedly wound on a wire guide shaft b;
Figure FDA0002455743600000022
Feeding the coated silica gel into a charging barrel of a silica gel extruder b from a forced feeding device, enabling the coated silica gel to move towards a machine head direction of the coated silica gel through the rotation of a screw rod of the silica gel extruder b, and obtaining a secondary coated carbon fiber cable after the primary coated carbon fiber cable is coated with the silica gel again at the machine head, dried, printed, dried again and tested by voltage;
Figure FDA0002455743600000023
The secondary coated carbon fiber cable continuously moves in a silica gel extruder b, is extruded and plasticized by a matched mould b, and finally is extruded out of the carbon fiber heating cable from a mould opening;
Figure FDA0002455743600000024
After the secondary coated carbon fiber cable is extruded, the uniformity of the cable diameter is adjusted, the cable head of the secondary coated carbon fiber cable is bound with the traction cable b after the adjustment is finished, the speed is adjusted through the speed control device, and after the speed of the secondary coated carbon fiber cable is adjusted to be consistent with that of the traction cable b, the secondary coated carbon fiber cable is wrapped by the secondary bag And the carbon fiber coated cable moves along with the traction wire b to be automatically wound on the wire guide shaft b.
2. The production method of a carbon fiber heating cable according to claim 1, characterized in that: the mass ratio of the raw rubber, the vulcanizing agent, the defrosting agent and the color master batch is set to be 1000:15:3: 5.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102237159A (en) * 2010-04-29 2011-11-09 神宇通信科技股份公司 Extrusion process of radio frequency (RF) micro air cooled insulator of coaxial cable
CN102285082A (en) * 2010-12-02 2011-12-21 晋江恒顺环保节能科技有限公司 Carbon fiber heater manufacturing equipment and method
CN104497576A (en) * 2014-12-26 2015-04-08 新乡市方元橡塑密封系统有限公司 Silicone rubber antifreezing foam tube and preparation method thereof
CN105120542A (en) * 2015-07-29 2015-12-02 山东英昊电子技术有限公司 Carbon fiber wire and method of processing and connecting the carbon fiber wire and metal line joint
CN106231707A (en) * 2016-08-17 2016-12-14 张德来 Armouring line with heating function and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102237159A (en) * 2010-04-29 2011-11-09 神宇通信科技股份公司 Extrusion process of radio frequency (RF) micro air cooled insulator of coaxial cable
CN102285082A (en) * 2010-12-02 2011-12-21 晋江恒顺环保节能科技有限公司 Carbon fiber heater manufacturing equipment and method
CN104497576A (en) * 2014-12-26 2015-04-08 新乡市方元橡塑密封系统有限公司 Silicone rubber antifreezing foam tube and preparation method thereof
CN105120542A (en) * 2015-07-29 2015-12-02 山东英昊电子技术有限公司 Carbon fiber wire and method of processing and connecting the carbon fiber wire and metal line joint
CN106231707A (en) * 2016-08-17 2016-12-14 张德来 Armouring line with heating function and preparation method thereof

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