CN101265676A - Carbon fiber shielding paper preparing process - Google Patents
Carbon fiber shielding paper preparing process Download PDFInfo
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- CN101265676A CN101265676A CNA2008100179054A CN200810017905A CN101265676A CN 101265676 A CN101265676 A CN 101265676A CN A2008100179054 A CNA2008100179054 A CN A2008100179054A CN 200810017905 A CN200810017905 A CN 200810017905A CN 101265676 A CN101265676 A CN 101265676A
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Abstract
A process for preparing carbon fiber screening paper is provided. The invention includes the following steps: mixing chopped carbon fiber and plant carbon fiber in a certain proportion, adding certain amounts of a dispersant and a defoaming agent, dispersing on a fluffer, and papermaking in a paper former. While the light weight of material is guaranteed, the paper is endowed with good screening performance and easy process, which make full use of the advantages of large scale production in the papermaking industry. Furthermore, the paper electric conductive screening performance can be controlled by adjusting and quantifying the amount of the carbon fiber. The carbon fiber screening paper, which is an electric conductive material with high performance, replaces the conventional electric conductive screening material and covers the shortages thereof. The prepared screening paper has good screening performance of electromagnetic waves, the screening effectiveness at 100KHz-1500MHz is more than 30dB and the maximum is 50dB, thereby being generally applicable to radiation protection and anti-interference of common commercial or electronic products.
Description
Technical field
The invention belongs to the crossing domain of paper science, shielding science and composite, be specifically related to a kind of conductive carbon fibre be used to manufacture paper with pulp preparation technology of carbon fiber shielding paper.
Background technology
The electromagnetic interference that electromagnetic radiation produces not only directly has influence on the healthy and orderly development of the performance and the information industry of electronic product, human and other organism are caused serious injury, but also can cause electromagnetic information to reveal the safety of serious harm national politics, military affairs and economic information.Particularly complicated in global situation, modern war is electronic, under the informationalized situation of economic development, the secret and safe problem of information becomes more important.Therefore press for system's improvement and protection are carried out in electromagnetic radiation.
To the year two thousand twenty, the key of ground war is " preponderating on collection and protection information ".In this trial of strength, the research of electromagnetic wave anti-leak has decisive role.China starts late on the one hand at this, and is national also insufficient to the understanding of electromagnetic shielding, and commercial and civilian computer electromagnetic leakage are not just more put on the agenda.Abroad maintaining secrecy of electromangnetic spectrum carried out electromagnetic shielding research to China and brought certain difficulty, study relatively backward and there is bigger gap in developed country.The shielding material of the U.S. and other developed country takes advantage of the occasion to enter China market, gains the initiative.
Therefore, the information security in order to ensure country's military affairs, politics, economic dispatch important department defends the national benefit, and China's electronic product is integrated with the world market, and the research of carrying out electromagnetic shielding material is significant, and task is urgent.
Summary of the invention
The object of the present invention is to provide a kind of preparation technology simple, and can give the preparation technology of the carbon fiber shielding paper of the good shielding properties of paper in the assurance light-weighted while of material.
For achieving the above object, the technical solution used in the present invention is:
1) at first, the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2 hours in water, 30～40 ° of SR then pull an oar in beater;
2) secondly, its mass percent 15～50% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device;
3) last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 30～120s under hydraulic press 4Mpa, and 90～105 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
The present invention according to certain mixed, adds certain amount of dispersant and defoamer with chopped carbon fiber and string, disperses discongesting on the device, manufactures paper with pulp into paper in sheet forming apparatus.Enough give paper good shielding properties simultaneously guaranteeing that material is light-weighted, and industry is simple, can make full use of the advantage of paper industry large-scale production.And can control the electric conductivity of paper by regulating the paper carbon fiber content, replacement conventional conductive material also compensates its defect, and becomes a kind of high performance conductive material.And the shielding paper according to method of the present invention preparation has good electric magnetic wave shielding properties, all greater than 30dB, reaches as high as 50dB at the 100KHz～shield effectiveness at 1500MHz place, can be used for the radiation proof of general commerce or electronic product and anti-interference fully.
The specific embodiment
Embodiment 1, at first, the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaks 2 hours in water, and 30 ° of SR then pull an oar in beater; Secondly, its mass percent 25% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device; At last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 100s under hydraulic press 4Mpa, and 100 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
Embodiment 2, at first, the bleaching needle-point leaf pulp plate are torn into the fragment of 25mm * 25mm, soak 2 hours in water, and 35 ° of SR then pull an oar in beater; Secondly, its mass percent 15% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device; At last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 60s under hydraulic press 4Mpa, and 92 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
Embodiment 3, at first, the bleaching needle-point leaf pulp plate are torn into the fragment of 25mm * 25mm, soak 2 hours in water, and 40 ° of SR then pull an oar in beater; Secondly, its mass percent 30% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device; At last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 120s under hydraulic press 4Mpa, and 105 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
Embodiment 4, at first, the bleaching needle-point leaf pulp plate are torn into the fragment of 25mm * 25mm, soak 2 hours in water, and 40 ° of SR then pull an oar in beater; Secondly, its mass percent 50% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device; At last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 30s under hydraulic press 4Mpa, and 90 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
Embodiment 5, at first, the bleaching needle-point leaf pulp plate are torn into the fragment of 25mm * 25mm, soak 2 hours in water, and 32 ° of SR then pull an oar in beater; Secondly, its mass percent 40% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device; At last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 80s under hydraulic press 4Mpa, and 103 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
Embodiment 6, at first, the bleaching needle-point leaf pulp plate are torn into the fragment of 25mm * 25mm, soak 2 hours in water, and 37 ° of SR then pull an oar in beater; Secondly, its mass percent 35% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device; At last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 110s under hydraulic press 4Mpa, and 95 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
When carbon fiber content with when quantitatively low, carbon fiber shielding paper can be used for the occasion low to shielding requirements, as the wrapping paper as electronic component.Increase carbon fiber content or quantitative, the electric conductivity of page and shielding properties improve, reach more than the 30dB, can be used for the radiation proof of general commerce or electronic product and anti-interference, as radome, barricade as electronic instrument, the wallpaper of important computations machine room, medical ward, accurate laboratory and momentous conference chamber reduces or prevents electromagnetic interference and leakage of information; Can also be as the electromagnetic shielding shielding card, closely the operating electronic equipment person can be placed on card in the pocket of front, to reduce or to avoid electromagnetic radiation.Simultaneously, the weight ratio metal shield materials of carbon fiber shielding paper is light, meets modern lightweight requirements.
Claims (7)
1, a kind of preparation technology of carbon fiber shielding paper is characterized in that:
1) at first, the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2 hours in water, 30～40 ° of SR then pull an oar in beater;
2) secondly, its mass percent 15～50% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device;
3) last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 30～120s under hydraulic press 4Mpa, and 90～105 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
2, the preparation technology of carbon fiber shielding paper according to claim 1 is characterized in that: at first, the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2 hours in water, 30 ° of SR then pull an oar in beater; Secondly, its mass percent 25% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device; At last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 100s under hydraulic press 4Mpa, and 100 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
3, the preparation technology of carbon fiber shielding paper according to claim 1 is characterized in that: at first, the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2 hours in water, 35 ° of SR then pull an oar in beater; Secondly, its mass percent 15% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device; At last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 60s under hydraulic press 4Mpa, and 92 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
4, the preparation technology of carbon fiber shielding paper according to claim 1 is characterized in that: at first, the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2 hours in water, 40 ° of SR then pull an oar in beater; Secondly, its mass percent 30% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device; At last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 120s under hydraulic press 4Mpa, and 105 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
5, the preparation technology of carbon fiber shielding paper according to claim 1 is characterized in that: at first, the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2 hours in water, 40 ° of SR then pull an oar in beater; Secondly, its mass percent 50% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device; At last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 30s under hydraulic press 4Mpa, and 90 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
6, the preparation technology of carbon fiber shielding paper according to claim 1 is characterized in that: at first, the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2 hours in water, 32 ° of SR then pull an oar in beater; Secondly, its mass percent 40% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device; At last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 80s under hydraulic press 4Mpa, and 103 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
7, the preparation technology of carbon fiber shielding paper according to claim 1 is characterized in that: at first, the bleaching needle-point leaf pulp plate is torn into the fragment of 25mm * 25mm, soaked 2 hours in water, 37 ° of SR then pull an oar in beater; Secondly, its mass percent 35% of adding, length are the chopped carbon fiber mixing of 3mm～5mm in the bleaching needle-point leaf pulp after making beating, the cationic polyacrylamide that adds mixture quality 1% then in mixture is made dispersant, 0.01% tributyl phosphate is made defoamer, discongests fiber is dispersed in the water in discongesting device; At last, it is to copy sheet behind the 1g/L in sheet forming apparatus that scattered mixed slurry is adjusted to concentration, and the l Water Paper page or leaf squeezes 110s under hydraulic press 4Mpa, and 95 ℃ of following vacuumize 2～4 minutes can obtain carbon fiber shielding paper.
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| CNA2008100179054A CN101265676A (en) | 2008-04-08 | 2008-04-08 | Carbon fiber shielding paper preparing process |
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| CNA2008100179054A CN101265676A (en) | 2008-04-08 | 2008-04-08 | Carbon fiber shielding paper preparing process |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994275A (en) * | 2010-09-14 | 2011-03-30 | 浙江科技学院 | Novel complex phase electromagnetic shielding-function paper and preparation method thereof |
| CN102182100A (en) * | 2011-04-12 | 2011-09-14 | 武汉赛洋暖通设备有限公司 | Carbon fiber heating paper and preparation method thereof |
| CN102226325A (en) * | 2011-06-02 | 2011-10-26 | 上海热丽电热材料有限公司 | Far infrared carbon fiber low temperature conductive heating paper and preparation method thereof |
| CN103114503A (en) * | 2013-01-25 | 2013-05-22 | 深圳市飞荣达科技股份有限公司 | Nickel-plated carbon fiber shielding paper and preparation method thereof |
| CN103556523A (en) * | 2013-09-16 | 2014-02-05 | 王霄飞 | Production technology for carbon fiber paper-steel base paper |
| CN103556524A (en) * | 2013-09-16 | 2014-02-05 | 王霄飞 | Production technology for carbon fiber paper steel |
| CN103726394A (en) * | 2013-04-22 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | High-strength carbon fiber shielding paper and preparation method thereof |
| CN105274896A (en) * | 2015-11-09 | 2016-01-27 | 中国林业科学研究院林产化学工业研究所 | Preparation method and evenness measurement method for carbon fiber synthetic paper |
| CN105332322A (en) * | 2015-09-30 | 2016-02-17 | 山西煦耀电子科技有限公司 | Plasticizing carbon paper softening processing method and softening composite conductive carbon paper prepared by the method |
| CN106381752A (en) * | 2016-08-31 | 2017-02-08 | 石家庄中热新能源科技有限公司 | Carbon fiber heating paper and application thereof |
| CN107012721A (en) * | 2017-03-31 | 2017-08-04 | 江南大学 | A kind of preparation of ultra high efficiency carbon fiber electrically magnetic screen paper |
| CN107447584A (en) * | 2017-08-03 | 2017-12-08 | 华南理工大学 | A kind of high-performance conductive paper and preparation method thereof |
| CN109338815A (en) * | 2018-09-21 | 2019-02-15 | 四川金象赛瑞化工股份有限公司 | A kind of melamine fiber paper and preparation method thereof |
| CN109594397A (en) * | 2018-11-30 | 2019-04-09 | 浙江金昌特种纸股份有限公司 | A kind of carbon fiber paper papermaking process |
| CN112832056A (en) * | 2020-12-31 | 2021-05-25 | 北京碧岩特种材料有限公司 | Paper-based flexible transparent conductive film based on carbon fibers and application thereof |
| CN113067097A (en) * | 2021-02-25 | 2021-07-02 | 天津科技大学 | Lithium ion battery diaphragm paper and preparation method thereof |
-
2008
- 2008-04-08 CN CNA2008100179054A patent/CN101265676A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994275A (en) * | 2010-09-14 | 2011-03-30 | 浙江科技学院 | Novel complex phase electromagnetic shielding-function paper and preparation method thereof |
| CN101994275B (en) * | 2010-09-14 | 2012-07-04 | 浙江科技学院 | Novel complex phase electromagnetic shielding-function paper and preparation method thereof |
| CN102182100A (en) * | 2011-04-12 | 2011-09-14 | 武汉赛洋暖通设备有限公司 | Carbon fiber heating paper and preparation method thereof |
| CN102182100B (en) * | 2011-04-12 | 2012-08-29 | 武汉赛洋暖通设备有限公司 | Carbon fiber heating paper and preparation method thereof |
| CN102226325A (en) * | 2011-06-02 | 2011-10-26 | 上海热丽电热材料有限公司 | Far infrared carbon fiber low temperature conductive heating paper and preparation method thereof |
| CN103114503A (en) * | 2013-01-25 | 2013-05-22 | 深圳市飞荣达科技股份有限公司 | Nickel-plated carbon fiber shielding paper and preparation method thereof |
| CN103726394A (en) * | 2013-04-22 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | High-strength carbon fiber shielding paper and preparation method thereof |
| CN103556523A (en) * | 2013-09-16 | 2014-02-05 | 王霄飞 | Production technology for carbon fiber paper-steel base paper |
| CN103556524A (en) * | 2013-09-16 | 2014-02-05 | 王霄飞 | Production technology for carbon fiber paper steel |
| CN105332322A (en) * | 2015-09-30 | 2016-02-17 | 山西煦耀电子科技有限公司 | Plasticizing carbon paper softening processing method and softening composite conductive carbon paper prepared by the method |
| CN105274896A (en) * | 2015-11-09 | 2016-01-27 | 中国林业科学研究院林产化学工业研究所 | Preparation method and evenness measurement method for carbon fiber synthetic paper |
| CN106381752A (en) * | 2016-08-31 | 2017-02-08 | 石家庄中热新能源科技有限公司 | Carbon fiber heating paper and application thereof |
| CN107012721A (en) * | 2017-03-31 | 2017-08-04 | 江南大学 | A kind of preparation of ultra high efficiency carbon fiber electrically magnetic screen paper |
| CN107012721B (en) * | 2017-03-31 | 2018-08-28 | 江南大学 | A kind of preparation of ultra high efficiency carbon fiber electrically magnetic screen paper |
| CN107447584A (en) * | 2017-08-03 | 2017-12-08 | 华南理工大学 | A kind of high-performance conductive paper and preparation method thereof |
| CN107447584B (en) * | 2017-08-03 | 2020-02-18 | 华南理工大学 | High-performance conductive paper and preparation method thereof |
| CN109338815A (en) * | 2018-09-21 | 2019-02-15 | 四川金象赛瑞化工股份有限公司 | A kind of melamine fiber paper and preparation method thereof |
| CN109338815B (en) * | 2018-09-21 | 2021-03-30 | 四川金象赛瑞化工股份有限公司 | Melamine fiber paper and preparation method thereof |
| CN109594397A (en) * | 2018-11-30 | 2019-04-09 | 浙江金昌特种纸股份有限公司 | A kind of carbon fiber paper papermaking process |
| CN112832056A (en) * | 2020-12-31 | 2021-05-25 | 北京碧岩特种材料有限公司 | Paper-based flexible transparent conductive film based on carbon fibers and application thereof |
| CN113067097A (en) * | 2021-02-25 | 2021-07-02 | 天津科技大学 | Lithium ion battery diaphragm paper and preparation method thereof |
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