Electrothermal organic power resistance slurry for heater

Abstract

The invention relates to an electrothermal organic power resistance slurry for a heater. The main formula of the slurry comprises the following components by weight percent: 28%-60% of resin I, 5%-13% of flame-retardant heat-resistant polymer containing boron element, 3%-6% of latent curing agent, 1%-2% of latent curing accelerator, 0-30% of resin II, 10%-15% of nano-carbon series conductive filler, 4%-5% of temperature coefficient adjustment additive, 0-5% of ultra-fine base metal alloy powder conductive filler, 0-3% of silicon series far infrared radiating material and 0-4% of ultra-fine mica powder, in addition to the main formula, the slurry further contains a small amount of function auxiliary phase. The slurry can solve the problems that the ordinary slurry is difficult to realize thinness, light weight or special shape; furthermore, the slurry has the properties of low temperature curing and high temperature use and can be directly used for printing or spraying and meet the technical development requirements of an electric heater on the trends of miniature, thinness, light weight and (shape and purpose) special shape.

Description

technical field [0001] The invention relates to an organic electrothermal material for a heater, in particular to an electrothermal organic power resistance slurry for a heater. Background technique [0002] The heating method of ordinary heaters still uses the traditional nickel / chromium alloy resistance wire or film as the heating material so far. With the improvement of the performance, structure, safety, environmental protection and other requirements of heaters at home and abroad, the demand for plate heaters continues to increase, especially in the high-tech field, which puts forward higher requirements for the thinning and special performance of heaters . The traditional nickel / chromium alloy resistance wire or film as the heating mode and heating material can no longer meet the requirements of technological development. [0003] The resistance wire heaters that have been commercialized at present generally make the resistance wire into a spiral or strip shape, wind...

AI Technical Summary

Problems solved by technology

[0004] (1) Limited by the shape of the resistance wire, it is difficult to realize the miniaturization and thinning of the heater

[0005] (2) The manufacturing process of resistance wire is complicated, the production cycle is long, and the production cost is high, which limits the scale and automation of production

[0006] (3) The manufacturing process of the heating plate is complicated, which makes the degree of freedom of circuit design small and the degree of automation low

[0008] (1) The manufacturing process conditions of resistors are extremely demanding, and the manufacturing process is complicated

[0009] (2) The uniformity of the resistive film is not easy to control, and the thickness and uniformity of the resistive film have a great influence on the power, thus resulting in low yield

[0010] (3) The thermal expansion coefficients of the resistive film and the substrate are inconsistent, the resistive film is easy to separate, and the film layer is peeled off, which can easily cause short circuit and open circuit

[0011] (4) and the method of etching to prepare circuit pollution is large, which is not conducive to environmental protection

[0012] (5) The circuit design of the heater is a series structure, the limitation of the circuit design is large, and the failure rate is high

[0013] (6) The manufacturing process of the heating plate is complicated and the cost is high

[0015] (1) It is difficult to achieve thinning, lightening or specialization of the heater

[0016] (2) The surface layer of resistance wire or resistance film is easy to oxidize and peel off, resulting in shortened service life of the product

[0017] (3) The thermal efficiency of the heater is low, and the power is not easy to control

[0018] (4) The resistance wire or resistance film is easy to relax, short circuit or open circuit when heated, resulting in unsafe use

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