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Carbon fiber flexible electric heating body and preparation method thereof

A carbon fiber heating and carbon fiber technology, applied in the direction of electric heating devices, ohmic resistance heating, electrical components, etc., can solve the problems of low electrothermal conversion rate, increase safety hazards, poor waterproof effect, etc., and achieve good insulation and electrothermal conversion efficiency High, the effect of improving creep resistance

Pending Publication Date: 2022-03-22
山东宽原新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the carbon fiber heating element in the prior art still has defects. The carbon fiber heating element radiates energy to the surroundings in the form of infrared rays. After the stain penetrates into the electric heating body, it will form a short circuit, resulting in leakage, which is easy to cause danger and increase safety hazards

Method used

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  • Carbon fiber flexible electric heating body and preparation method thereof
  • Carbon fiber flexible electric heating body and preparation method thereof
  • Carbon fiber flexible electric heating body and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0050] According to the resistance requirements of the heating body, 3K carbon fiber T700 filaments are used for rope braiding, the twist is 4 twists / cm, and the number of joints is 6 shares. The length of carbon fibers used in the electric heating body is calculated according to the following formula: carbon fiber filament length (unit: cm) = Rated voltage (unit: V)×rated voltage (unit: V) / rated power (unit: W) / resistance per unit length of carbon fiber (unit: Ω / cm), the length of the carbon fiber calculated in this embodiment is: 220×220 / 1000 / 1.7 = 28.47 cm. The surface of the prepared rope-like carbon fiber was subjected to instantaneous electrification to remove glue, the voltage was 85V, and the electrification time was 2s. After removing the glue, the carbon fiber rope is coated with surface radiation setting glue, the glue content is 25wt%, wherein the setting glue is made of phenolic resin as the base material, and the filler is nano-scale silicon carbide high-radiati...

Embodiment 2

[0052] According to the resistance requirements of the heating body, 3K carbon fiber T800 filaments are used for rope braiding, the twist is 3 twists / cm, and the number of joints is 4 shares. The length of carbon fibers used in the electric heating body is calculated according to the following formula: carbon fiber filament length (unit: cm) = Rated voltage (unit: V)×rated voltage (unit: V) / rated power (unit: W) / resistance per unit length of carbon fiber (unit: Ω / cm), the length of the carbon fiber calculated in this embodiment is: 220×220 / 1500 / 1.7=18.98cm The surface of the rope-shaped carbon fiber is subjected to instantaneous electrification and deglue treatment, the voltage is 80V, and the electrification time is 2s. After removing the glue, the carbon fiber rope is coated with surface radiation setting glue, the glue content is 20wt%, wherein the setting glue is made of unsaturated polyester resin as the base material, and the filler is nano-scale silicon carbide high-rad...

Embodiment 3

[0054] According to the resistance requirements of the heating body, 3K carbon fiber T300 filaments are used for ribbon braiding. The total number of single bundles of fibers in the braiding belt is 12 strands. The length of carbon fibers used in the electric heating body is calculated according to the following formula: carbon fiber length (unit: cm) = rated voltage ( Unit: V) × rated voltage (unit: V) / rated power (unit: W) / carbon fiber unit length resistance (unit: Ω / cm), the length of the carbon fiber calculated in this embodiment is: 220 × 220 / 1200 / 1.7 = 23.73 cm. The strip-shaped carbon fiber was subjected to instantaneous electrification to remove glue on the surface, the voltage was 80V, and the electrification time was 2s. After removing the glue, the carbon fiber rope is coated with surface radiation setting glue, the glue content is 30wt%, wherein the setting glue is made of thermosetting polyurethane as the base material, and the filler is nano-scale silicon car...

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Abstract

The invention relates to a carbon fiber flexible electric heating body and a preparation method thereof. The electric heating body sequentially comprises a carbon fiber heating body, a Teflon heat-resistant layer (silica gel layer), a cross-linked polyethylene insulating layer, a PVC waterproof impact-resistant layer and a steel wire armored woven layer from inside to outside. The carbon fiber heating body is made of woven fiber filaments and has the advantages of being rapid in temperature rise, high in electricity-heat conversion efficiency, high in tensile strength, stable in chemical performance and the like. The Teflon heat-resistant layer has the characteristic of high temperature resistance; the PVC waterproof impact-resistant layer has the properties of flame retardance, water resistance, weather resistance, acid resistance, deformation resistance, high tensile strength and high elongation; the steel wire armored braid layer mainly bears external pressure load, provides axial tension and ensures the flexibility of the electric heating body at the same time; the long-term working temperature of the carbon fiber flexible electric heating body can reach 90 DEG C, and the bearable instantaneous temperature can reach 170-250 DEG C.

Description

technical field [0001] The invention relates to the technical field of preparation of a carbon fiber electric heating body, in particular to a carbon fiber flexible electric heating body and a preparation method thereof. Background technique [0002] At present, heating elements on the market are divided into two categories: metal and non-metal. The main materials of the former are copper, stainless steel, etc., and the materials of the latter are quartz, glass, ceramics, etc. Copper has excellent ductility and good thermal conductivity, and the seamless copper tube made of it can effectively prevent water leakage, but the price of copper is high, and the cost of copper heating elements is high. The stainless steel heating element is low in cost and can achieve rapid heating, but it is easy to attach scale. Non-metallic heating elements on the market usually have a layer of heating material attached to the outer wall, which has disadvantages such as poor thermal conductivit...

Claims

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Application Information

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IPC IPC(8): H05B3/14H05B3/34
CPCH05B3/34H05B3/145H05B3/14
Inventor 朱波曹伟伟王永伟李明于宽张敏
Owner 山东宽原新材料科技有限公司
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