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Medium-high temperature carbon crystal electric heating material, medium-high temperature carbon crystal electric heating plate and relevant preparation method

An electric heating material, medium and high temperature technology, applied in medium and high temperature carbon crystal electric heating materials, medium and high temperature carbon crystal electric heating plates and related preparation fields, can solve problems such as difficulty in ensuring construction quality, temperature risk of carbon fiber materials, inability to use radiators, etc., to achieve Effects suitable for large-scale promotion and application

Inactive Publication Date: 2011-02-09
上海尚诺碳晶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It cannot be used for products such as radiators with a smaller area
It has lost the most mainstream market; at the same time, due to its strict requirements on the construction environment and conditions, it is difficult to ensure its construction quality during installation; in addition, the uncertainty of the temperature of carbon fiber materials makes it difficult to use after entering the concealed project. bring great risk

Method used

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  • Medium-high temperature carbon crystal electric heating material, medium-high temperature carbon crystal electric heating plate and relevant preparation method
  • Medium-high temperature carbon crystal electric heating material, medium-high temperature carbon crystal electric heating plate and relevant preparation method
  • Medium-high temperature carbon crystal electric heating material, medium-high temperature carbon crystal electric heating plate and relevant preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0033] The modulus indicators of the selected carbon fiber raw materials are: acrylocyanine, resistance 10K modulus, fiber length 2-3 mm, and no glue.

[0034] The preparation of carbon crystal powder comprises the following steps successively:

[0035] a) Use a strong magnetic field above 30,000 gauss to strengthen the electrode polarity;

[0036] b) Use a high-power electronic ball mill for deep processing, and the ball milling time is 2 to 3 hours until the carbon crystal powder with uniform particles of 1000 to 3000 mesh is produced to form a carbon crystal raw material, and the surface temperature of the carbon crystal raw material can reach 100 °C Above, and reach a higher 250 ~ 300 ℃.

preparation Embodiment 2

[0038] The modulus indicators of the selected carbon fiber raw materials are: acrylocyanine, resistance 10K modulus, fiber length 3-4mm, and no glue. The carbon crystal powder is prepared according to the method in Example 1 to form a carbon crystal raw material. The surface temperature of the carbon crystal raw material can reach above 100° C., and reach a relatively high 250-300° C.

[0039] Carbon crystal plate (i.e. medium and high temperature carbon crystal electric heating plate) Preparation Example 1

[0040] a) Preparation of raw materials:

[0041] 1. The 1000~3000 mesh carbon crystal powder obtained in the preparation example 1 of the above-mentioned carbon crystal powder is 20% by weight, and the 1000~3000 mesh silicon dioxide (Si02 ) in a proportion of 80% by weight, mixed into a medium-high temperature carbon crystal electrothermal mixture;

[0042] ②Pine perfume, the dosage is 10% of the total amount of the above medium and high temperature carbon crystal electr...

preparation Embodiment 3

[0061] The carbon crystal powder obtained in the preparation example 2 of the above carbon crystal powder is 40% by weight, and 60% by weight of silicon dioxide and rosin water are added, and the consumption is 1% of the total amount of the above-mentioned medium and high temperature carbon crystal electric heating mixture. 20%. Then carbon crystal plate C was prepared according to the steps in Example 1 for the preparation of a carbon crystal plate (ie, a medium-high temperature carbon crystal electric heating plate).

[0062] For the carbon crystal plates A, B and C prepared by the above method, the heating time test, the surface temperature uniformity test and the surface insulation test were respectively carried out, and the obtained results are as follows:

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Abstract

The invention relates to a medium-high temperature carbon crystal electric heating material, which is obtained by grinding and modifying a carbon fiber serving as a raw material. The material is prepared by the following steps of: A) intensifying the electrode polarity of the carbon fiber by using an intense magnetic field of over 30,000 gauss; and B) grinding the carbon fiber into carbon crystal powder with uniform particles of between 1,000 and 3,000 meshes. Preferably, the step B) comprises the following specific step of: performing deep processing on the carbon fiber by using a high-power electronic ball mill for 2 to 3 hours until the carbon crystal powder with the uniform particles of between 1,000 and 3,000 meshes is produced, wherein the modulus indexes of the carbon fiber are that: the carbon fiber is acrylonitrile-based; the resistance is 10 K; the fiber length is between 2 and 4 millimeters; and an adhesive is not contained. The invention also relates to a medium-high temperature carbon crystal electric heating plate prepared from the material and a relevant preparation method. The medium-high temperature carbon crystal electric heating material of the invention is high temperature resistant and the surface temperature is over 100 DEG C or even between 250 and 300 DEG C. The medium-high temperature carbon crystal electric heating plate prepared from the material can be applied to a medium-high temperature carbon crystal electric heating product and is suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to the technical field of electrothermal materials, in particular to the technical field of carbon crystal electrothermal materials, in particular to medium-high temperature carbon crystal electrothermal materials, medium-high temperature carbon crystal electrothermal plates and related preparation methods. Background technique [0002] Carbon fiber has the characteristics of electrical conductivity, thermal conductivity, anti-oxidation (long-term use at 300°C), light weight, thin diameter (<7μm), small temperature coefficient of resistance, stable electrical performance, far-infrared radiation, shielding or damping electromagnetic wave interference, etc. The pulverized carbon fiber can be evenly dispersed in various matrix inorganic materials, easy to industrial scale production, and has been widely used in conductive heating materials. [0003] The planar heating element produced by carbon fiber material has the characteristi...

Claims

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Application Information

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IPC IPC(8): H05B3/14H05B3/20C04B41/50
Inventor 童中平陈仕猛鹿峰
Owner 上海尚诺碳晶科技有限公司
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