Production method of carbon fiber heating cable

A technology of carbon fiber heating and production methods, which is applied in the direction of heating element shape, etc., can solve the problems of affecting the use effect of carbon fiber heating cables, uneven coating, and low service life of carbon fiber heating cables, so as to improve the anti-frosting ability and method Reasonable, good effect

Active Publication Date: 2018-01-09
甘肃华强新能源科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the domestic production process of carbon fiber heating cables is to cover the silica gel at one time. Since the carbon fiber filaments are originally flat, uneven coating often occurs in the one-time coating process, resulting in low life of the produced carbon fiber heating cables; and The carbon fiber heating cable produced according to the one-time coating production process is used in colder regions such as Northwest and Northeast, and white frost often appears on the cable, which affects the use effect of the carbon fiber heating cable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: A kind of production method of carbon fiber heating cable, comprises the following steps:

[0030] S1, rubber mixing:

[0031] ① After the two-roller mill is powered on, it must be ensured that there is cooling water in the rollers, and the mixing temperature should be below 40°C;

[0032] ② After adding 5kg of raw rubber and 75g of vulcanizing agent to the double-roller mill in sequence, mix the rubber for 2-3 minutes until the raw rubber becomes soft and smooth, then add 15g of defrosting agent and 25g of color masterbatch in sequence, and continue Mix the rubber for 5-8 minutes until the coated silica gel with uniform color is obtained;

[0033] S2. Carbon fiber precursor one-time coating:

[0034] ③ After the silicone extruder a is powered on, adjust the temperature to 350°C to preheat its oven;

[0035] ④At the same time, fix the carbon fiber precursor on the rotating shaft of the silicone extruder a, open the head of the silicone extruder a, insta...

Embodiment 2

[0048] The difference from Example 1 is that 7.5kg of raw rubber, 112.5g of vulcanizing agent, 22.5g of defrosting agent and 37.5g of color masterbatch were sequentially added to the double-roll mill to finally obtain a coating layer with a thickness of 5.5mm and a length of About 247.5m of carbon fiber heating cable.

Embodiment 3

[0050] The difference from Example 1-2 is that 10kg of raw rubber, 150g of vulcanizing agent, 30g of defrosting agent and 50g of color masterbatch were sequentially added into the double-roller mill, and finally a coating layer with a thickness of 5.5mm and a length of about 330m carbon fiber heating cable.

[0051] In the above-mentioned examples 1-3, the amount of raw rubber, vulcanizing agent, defrosting agent and color masterbatch added in the double-roll mill depends on the length of the carbon fiber discovery cable to be produced; The cladding layer is heated again in the silicone extruder b, then extruded evenly, and then coated twice, and finally the thickness of the cladding layer is uniform. The thickness of the cladding layer after cladding is 5.5mm.

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Abstract

The invention discloses a production method of a carbon fiber heating cable. The production method of the carbon fiber heating cable comprises the following steps: S1, gel refining: adding rubber, vulcanizing agent, defrosting agent and color master batch in the double-roller blending rolls, refining to obtain coating silica gel with uniform color; S2, primary coating of carbon fiber precursor: performing primary coating on the carbon fiber precursor at 350 degrees centigrade by means of a silica gel extruder a; S3, secondary coating of the carbon fiber precursor: performing secondary coatingon the carbon fiber precursor performed the primary coating at the temperature of 300 degrees centigrade by means of a silica gel extruder b, and obtaining the carbon fiber heating cable finally. According to the invention, the secondary coating technology is used by the production method of the carbon fiber heating cable, therefore, the outer diameter of the carbon fiber heating cable is increased, the centrality and toughness of the cable is enhanced, and the service life of the cable is lengthened; moreover, the proportioning method of the coating silica gel is reasonable, and the ratio ofthe defrosting agent is increased, therefore, the frost resistance of the finished product of carbon fiber heating cable is improved, and the using effect is improved.

Description

technical field [0001] The invention belongs to the technical field of electric heating, and specifically relates to a production method of a carbon fiber heating cable. Background technique [0002] The carbon fiber heating technology is to connect the carbon fiber heating cable to the metal power line (cold line). After the power is turned on, the carbon fiber heating cable generates far infrared radiation energy to achieve the purpose of heating and heating. Carbon fiber heating cable and its application have the advantages of high thermal performance, convenient installation, low maintenance cost, safe and reliable use, etc. Its electrothermal conversion efficiency is 30% higher than that of metal heating, and its electrothermal efficiency is about 100%. [0003] At present, the domestic production process of carbon fiber heating cables is to cover the silica gel at one time. Since the carbon fiber filaments are originally flat, uneven coating often occurs in the one-tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/56
Inventor 徐志强张艳兵
Owner 甘肃华强新能源科技发展有限公司
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