CN1274783A - Electrothermal high-temperature carbon fiber paper and its making process - Google Patents
Electrothermal high-temperature carbon fiber paper and its making process Download PDFInfo
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- CN1274783A CN1274783A CN 00106676 CN00106676A CN1274783A CN 1274783 A CN1274783 A CN 1274783A CN 00106676 CN00106676 CN 00106676 CN 00106676 A CN00106676 A CN 00106676A CN 1274783 A CN1274783 A CN 1274783A
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Abstract
The electrothermal high-temperature carbon fiber paper consists of paper pulp produced with coniferous bark and through conventional paper-making process and inorganic material, and contains; paper pulp 30-35%, asbestos wool 15-20%, short staple 16-22%, quartz 5-10% and short carbon fiber 15-26%. The making process includes steps of addition of asbestos wool, short staple, quartz and short carbon fiber to paper pulp, mixing with hot water while stirring, paper making, dipping in aluminum phosphate solution, insulation treatment and high-temperature curing. As one kind of efficient product to change electric energy into heat energy, the present invention has wide application in industry.
Description
The invention belongs to non-conductive heater element, relate in particular to a kind of high-temperature carbon fiber paper that is used for industry and preparation method thereof.
Present carbon fiber electrically thermal element (line, sheet), as daily necessitiess such as clothes, electric blanket, decorative panels, the thermal efficiency is not high mostly.CN2044050 has announced a kind of " electric heating decorative panel ", and it is to sandwich an electric hot plate that is formed by graphite, cement, wood chip, adhesive pressing between fiberboard and bunting.This electric hot plate surface temperature is the highest has only the 50-60 degree, only can be as family's heating.
The objective of the invention is to overcome the deficiency of prior art, a kind of electrothermal high-temperature carbon fiber paper and preparation method thereof is provided, this carbon fiber paper has that heating area is big, electrothermal calefactive rate is fast, thermal efficiency advantages of higher, can be as the heating element heater in the industrial circle.
The present invention is achieved through the following technical solutions.A kind of electrothermal high-temperature carbon fiber paper, form by paper pulp and inorganic material, its paper pulp is to be the aqueous solution that material adopts conventional wet papermaking process to produce with the coniferous bark, inorganic material is asbestos wool, give oxygen silk short fiber, silica flour and carbon fiber short fiber, its content: paper pulp 30-35%, asbestos wool 15-20% gives oxygen silk short fiber 16-22%, silica flour 5-10%, carbon fiber short fiber 15-26%.
The preparation method of electrothermal high-temperature carbon fiber paper, according to the following steps:
(1) wet papermaking process is produced coniferous bark paper pulp routinely, in its aqueous solution according to the required electrical power speed of product add certain content asbestos wool, give oxygen silk short fiber, silica flour, carbon fiber short fiber;
(2) weight of pressing pulp-water solution adds 20 times water, and water temperature is 80 degree, stirs with 500 rev/mins to add 10-15 minute, makes its mixture reaction;
(3) weight of pressing pulp-water solution again adds 100 times water, and water temperature 80 degree stirred 10-15 minute with 500 rev/mins, and its mixture is fully reacted;
(4) copy paper, the weight 50g-80g/m of paper
2
(5) insert dipping in the aluminum phosphate solution (inorganic binder), make the organic fiber etch in the paper, stay the black carbide, reach erosion suede carbon solidification effect;
(6) insulation processing, inorganic carbon paper pressed the shape of product cutting after, carry out single or double spraying polyimide insulative temperature resisting paint;
(7) hot setting solidified 2 hours in the baking oven of 200 degree.
Advantage of the present invention and effect: because the present invention takes to lose the solid carbon technological measure of suede, to strengthen paper and place aluminum phosphate solution (inorganic binder) dipping, aluminum phosphate has extremely strong corrosivity, and the organic plant fiber that strengthens in the paper becomes the inorganic carbide fiber after corrosion.Carbon fiber is acidproof, alkaline-resisting, is not subjected to phosphoric acid corrosion, and its electric conductivity is constant.Therefore, this carbon fiber paper can normally use under the high temperature of 350 degree.The microstructure of high-temperature carbon fiber paper is three-dimensional network overlap joint shape, and wherein carbon fiber short fiber, inorfil micro mist, binding agent are interspersed.It is unordered to form the part, whole orderly planar resistive element.Its power density can reach 0.1W/cm
2-5.0W/cm
2The high temperature carbon paper can carry out combination process such as the compound or impregnation of hot pressing is bonding with the high-temperature insulating materials and produce planar heating plate (sheet).It is compared with the carbon fiber electrically thermal element of prior art, because the heating of two-sided two-way simultaneous, heat exchange area is big, and speed is fast.Because carbon fiber paper has only 0.01-0.0015mm thickness, load is few, thermal inertia is little, temperature-coefficient of electrical resistance is little, power attenuation is little.In a word, thermal efficiency height of the present invention, electric conversion rate＞95% is the environmental protection and energy saving product that electric energy directly is converted to heat energy, industrial have wide use value.
Fig. 1 has provided the microstructure vertical view of high-temperature carbon fiber paper;
Fig. 2 has provided the microstructure side view of high-temperature carbon fiber paper.
Wherein: 1. carbon fiber short fiber; 2. aluminum phosphate binder; 3. inorganic matter.
Further the present invention is illustrated below by embodiment.
Embodiment 1: a kind of electrothermal high-temperature carbon fiber paper, form by paper pulp and inorganic material, paper pulp is that material adopts the production of conventional wet papermaking process with the coniferous bark, inorganic material is asbestos wool, give oxygen silk short fiber, silica flour and carbon fiber short fiber, its content: paper pulp 30%, asbestos wool 20% gives oxygen silk short fiber 22%, silica flour 10%, carbon fiber short fiber 18%.
The following step of preparation method is poly-:
(1) wet papermaking process is produced coniferous bark paper pulp routinely, put into said ratio asbestos wool, give oxygen silk short fiber, silica flour, the fine paper short fiber of carbon;
(2) weight of pressing pulp-water solution adds 20 times water, and water temperature is controlled at 80 degree, stirs 15 minutes with 500 rev/mins;
(3) weight of pressing paper pulp again adds 100 times water, and water temperature is controlled at 80 degree, stirs 15 minutes with 500 rev/mins;
(4) adopt conventional method to copy paper, make 50g-80g/m
2Enhancing paper;
(5) enhancing paper is inserted in the aluminum phosphate solution and is flooded;
(6) with inorganic carbon paper cutting double-face spray painting polyimide insulative temperature resisting paint;
(7) in 200 degree baking ovens, solidified 2 hours.
Embodiment 2: a kind of electrothermal high-temperature carbon fiber paper, it forms content: coniferous bark paper pulp is 35%, and the serpentine velveteen is 15%, gives oxygen silk short fiber 16%, silica flour 5%, carbon fiber short fiber 26%.
Preparation method: repeat example 1 by described synchronised is poly-, but mixing time is 20 minutes for the first time, is 20 minutes for the second time; Insulation processing is the single face spraying polyimide insulative temperature resisting paint at carbon paper.
Embodiment 3: a kind of electrothermal high-temperature carbon fiber paper, its constituent content is: coniferous bark paper pulp 30%, asbestos wool 18% gives oxygen silk short fiber 20%, zinc oxide 8%, carbon fiber short fiber 24%.
Preparation method is undertaken by embodiment 2 same steps as.
Claims (7)
1, a kind of electrothermal high-temperature carbon fiber paper, form by paper pulp and inorganic material, it is characterized in that described paper pulp is is the aqueous solution that material adopts conventional wet papermaking process to produce with the coniferous bark, inorganic material is an asbestos wool, give oxygen silk short fiber, silica flour and carbon fiber short fiber, its content: paper pulp 30-35%, asbestos wool 15-20%, give oxygen silk short fiber 16-22%, silica flour 5-10%, carbon fiber short fiber 15-26%, it can obtain with following method: (1) adds asbestos wool respectively in coniferous bark paper pulp, give oxygen silk short fiber, silica flour, and the fine paper short fiber of carbon, (2) add warm water and stir, (3) copy paper, and (4) are inserted in the aluminum phosphate solution and flooded, (5) insulation processing, (6) hot setting.
2, a kind of preparation method of electrothermal high-temperature carbon fiber paper is characterized in that processing step is:
(1) produces coniferous bark paper pulp with conventional wet papermaking process, wherein put into asbestos wool, give oxygen silk short fiber, silica flour, the fine paper short fiber of carbon;
(2) add warm water, stirring, reaction;
(3) copy paper;
(4) insert in the aluminum phosphate solution and flood---the solid carbon of erosion suede;
(5) insulation processing;
(6) hot setting.
3, according to the preparation method of the described electrothermal high-temperature carbon fiber paper of claim 2, it is characterized in that described adding warm water stirs, add water at twice, the weight of pressing paper pulp for the first time adds 20 times water, stir adding 10-15 minute with 500 rev/mins, the weight of pressing paper pulp for the second time adds 100 times water, stirs 10-15 minute again.
4,, it is characterized in that the temperature of the aqueous solution behind the described adding warm water should be 80 degree according to the preparation method of claim 2,3 described electrothermal high-temperature carbon fiber papers.
5,, it is characterized in that described insulation processing is the single or double spraying polyimide insulative lacquer with the inorganic paper behind the solid carbon of erosion suede according to the preparation method of the described electrothermal high-temperature carbon fiber paper of claim 2.
6, according to the preparation method of the described electrothermal high-temperature carbon fiber paper of claim 2, it is characterized in that described hot setting, be in the baking oven of 200 degree, to solidify 2 hours.
7, according to the preparation method of claim 1,2 described electrothermal high-temperature carbon fiber papers, it is characterized in that described asbestos wool is the snake asbestos fiber, silica flour can replace with zinc oxide.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00106676 CN1274783A (en) | 2000-04-18 | 2000-04-18 | Electrothermal high-temperature carbon fiber paper and its making process |
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| CN 00106676 CN1274783A (en) | 2000-04-18 | 2000-04-18 | Electrothermal high-temperature carbon fiber paper and its making process |
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| CN1274783A true CN1274783A (en) | 2000-11-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451989A (en) * | 2013-09-18 | 2013-12-18 | 烟台民士达特种纸业股份有限公司 | Electrothermal high-temperature-resistant carbon fiber paper and preparation method thereof |
| CN105960035A (en) * | 2016-05-18 | 2016-09-21 | 深圳市卓先实业有限公司 | Self-controlled temperature electrothermal film production method and electrothermal film thereof |
| CN107587676A (en) * | 2017-08-31 | 2018-01-16 | 苏州仲勉装饰有限公司 | A kind of electrothermal decorative plate of carbon fiber modifying and preparation method thereof |
-
2000
- 2000-04-18 CN CN 00106676 patent/CN1274783A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451989A (en) * | 2013-09-18 | 2013-12-18 | 烟台民士达特种纸业股份有限公司 | Electrothermal high-temperature-resistant carbon fiber paper and preparation method thereof |
| CN103451989B (en) * | 2013-09-18 | 2015-07-01 | 烟台民士达特种纸业股份有限公司 | Electrothermal high-temperature-resistant carbon fiber paper and preparation method thereof |
| CN105960035A (en) * | 2016-05-18 | 2016-09-21 | 深圳市卓先实业有限公司 | Self-controlled temperature electrothermal film production method and electrothermal film thereof |
| CN107587676A (en) * | 2017-08-31 | 2018-01-16 | 苏州仲勉装饰有限公司 | A kind of electrothermal decorative plate of carbon fiber modifying and preparation method thereof |
| CN107587676B (en) * | 2017-08-31 | 2020-04-21 | 苏州仲勉装饰有限公司 | Carbon fiber modified electric heating decorative plate and preparation method thereof |
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