A kind of environment-friendly curing carbon felt and preparation method thereof

A carbon felt and environmentally friendly technology, applied in the field of environmentally friendly solidified carbon felt and its preparation, can solve the problems of high raw material prices, large environmental pollution, and large energy consumption, and achieve the effect of abundant raw material sources and reduced costs

Active Publication Date: 2020-07-31
湖南金创新材料有限公司
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Problems solved by technology

[0006] The invention provides an environmentally friendly solidified carbon felt and a preparation method thereof, which are used to overcome the defects in the prior art such as large energy consumption, large environmental pollution, high raw material prices and difficulty in obtaining, etc., and realize the preparation method is environmentally friendly, and the source of raw materials is abundant and the price is low. low

Method used

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  • A kind of environment-friendly curing carbon felt and preparation method thereof
  • A kind of environment-friendly curing carbon felt and preparation method thereof

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preparation example Construction

[0031] The present invention also proposes a kind of preparation method of environment-friendly curing carbon felt (referring to figure 1 ), including the following steps:

[0032] S1: Cutting and degumming, cutting the bamboo into bamboo strips with a length of 500-1500 mm and a width of 10-20 mm, then soaking the bamboo strips in a degumming agent for degumming, and then rinsing them with deionized water; cutting is In order to better degumming; degumming treatment is to remove the pectin, fat wax, etc. in the bamboo fiber.

[0033] S2: Pickling and silk making, soaking the bamboo sticks treated in step S1 in concentrated hydrochloric acid, then rinsing them with deionized water, and then making silk with the bamboo sticks with a hydraulic press to obtain bamboo silk; the acid Washing is to remove metal elements and inorganic elements in bamboo fibers, such as K, Na, S, P, etc.

[0034] S3: acid treatment, put the bamboo silk obtained in step S2 into the reaction tank, add...

Embodiment 1

[0053] The present embodiment provides a kind of preparation method of environment-friendly cured carbon felt, comprises the following steps:

[0054] S1: cutting and degumming, cutting the bamboo into bamboo strips with a length of 500mm and a width of 10mm, and then putting the bamboo strips into NaHCO with a concentration of 25% 3 solution, soak at 90°C for 3 hours, and then rinse with deionized water;

[0055] S2: pickling and silk making, put the bamboo strips treated in step S1 into concentrated hydrochloric acid with a mass fraction of 20% and soak for 20 minutes, then rinse them with deionized water, and then use a hydraulic press to make silk from the bamboo strips. get bamboo silk;

[0056] S3: acid treatment, put the bamboo filaments obtained in step S2 into the reaction tank, add the dilute hydrochloric acid with a mass fraction of 10%, heat to 80°C, pressurize to 1.5MPa, and then keep the temperature at 80°C and 1.5MPa. Pressing for 5h; washing the acid-treated ...

Embodiment 2

[0064] The present embodiment provides a kind of preparation method of environment-friendly cured carbon felt, comprises the following steps:

[0065] S1: cutting and degumming, the bamboo is cut into bamboo strips with a length of 850mm and a width of 14mm, and then the bamboo strips are put into a concentration of 30% Na 2 CO 3 solution, soak at 105°C for 3.5 hours, and then rinse with deionized water;

[0066] S2: pickling and silk making, put the bamboo strips treated in step S1 into concentrated hydrochloric acid with a mass fraction of 27% and soak for 27 minutes, then rinse them with deionized water, and then use a hydraulic press to make silk from the bamboo strips. get bamboo silk;

[0067] S3: acid treatment, put the bamboo filaments obtained in step S2 into the reaction tank, add the dilute hydrochloric acid with a mass fraction of 15%, heat to 60°C, pressurize to 1.6MPa, and then keep the temperature at 60°C and 1.6MPa. Pressing for 6 hours; washing the acid-tre...

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Abstract

The invention discloses environment-friendly cured carbon felt and a preparation method thereof. The cured carbon felt is prepared by taking natural bamboo fiber as the raw material. The preparation method of the cured carbon felt comprises the steps of cutting and degumming, pickling and silk making, acid treatment and softening, loosening and felting, carbonization and finalization, CVD treatment and high temperature treatment. Compared with an existing cured carbon felt preparation method, the preparation method of the cured carbon felt is environmentally friendly, the raw materials are rich in source, and the price is low. The monofilament diameter of the cured carbon felt is 10-15 micrometer; the cured carbon felt is mainly carbon, and the carbon content is 95-97%; the cured carbon felt can tolerate the temperature of 2,500 DEG C to the maximum, and the metal impurity content is less than 295ppm.

Description

technical field [0001] The invention relates to the technical field of heat preservation material preparation, in particular to an environmentally friendly solidified carbon felt and a preparation method thereof. Background technique [0002] The thermal insulation and solidification blanket required for the manufacture of the main components of the thermal field system of ingot furnaces, single crystal furnaces, and hydrogenation furnaces requires excellent performance such as high temperature resistance, and the content of metal impurities is required to be less than 300ppm in order to meet the crystallization requirements of artificial crystals. and higher yield requirements. [0003] The thermal insulation components of traditional artificial crystal growth furnaces use graphite and soft carbon felt components. [0004] Since the end of the last century, it was proposed to use carbon-carbon composite materials to make thermal field parts. In most existing methods for m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4266D04H1/46D01C1/02D06C7/04D06B9/00
CPCD01C1/02D04H1/4266D04H1/46D06B9/00D06C7/04
Inventor 陈超刘进怀殷勇陈斌
Owner 湖南金创新材料有限公司
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