CN102261009A - Preparation method of aramid insulating paper - Google Patents
Preparation method of aramid insulating paper Download PDFInfo
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- CN102261009A CN102261009A CN2011101953881A CN201110195388A CN102261009A CN 102261009 A CN102261009 A CN 102261009A CN 2011101953881 A CN2011101953881 A CN 2011101953881A CN 201110195388 A CN201110195388 A CN 201110195388A CN 102261009 A CN102261009 A CN 102261009A
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Abstract
The invention provides a preparation method of aramid insulating paper, belonging to the field of synthetic fiber paper. The preparation method is characterized in that the aramid insulating paper is prepared by adopting the inclined-wire forming technology, the angle of an inclined wire of an inclined wire machine can be regulated and changed according to different mixture ratios of the aramid insulating paper, a shaker is mounted on the inclined wire and the shaking technology is adopted. The aramid insulating paper prepared according to the method provided by the invention is better in uniformity and mechanical strength.
Description
Technical field
The present invention relates to a kind of preparation method of aramid fiber insulating paper, belong to synthetic fibre paper and make the field.
Background technology
Aramid fiber paper substrate composite (be called for short aramid fiber paper) is to manufacture paper with pulp into paper with staple fiber according to a certain percentage with pulp mostly, makes through hot-forming again.Aramid fiber paper is because its good insulating properties and heat-resisting quantity are widely used in industries such as Aero-Space, traffic, electronics as structural material, insulating materials and filtering material.
Most of aramid fiber insulating paper is that p-aramid fiber short fiber, meta-aramid pulp and the third fiber or adhesive are formed, for example the described aramid fiber insulating paper of ZL93106746.4 by p-aramid fiber staple fiber and meta-aramid pulp synthetic paper, the described aramid fiber insulating paper of ZL99125156.3 by aromatic polyamide fibre and adhesive form, the described aramid fiber insulating paper of ZL200410026569.1 is made up of aromatic polyamide fibre, polyparaphenylene Ben Bing Er oxazole fiber and fibrillating fibre etc.Above-mentioned patent focuses on the proportioning and heat pressing process of aramid fiber paper, and is the mixed paper of multiple material.ZL200610043659.0 has proposed the preparation method of pure meta-position aramid fiber paper, though it has solved the scattering problem of fiber in the raw material preparatory stage, but machine hand's skill of papermaking is not described in detail.
Above-mentioned patent relatively lays particular emphasis on the composition of synthetic fiber, the machine hand planted improve seldom, however internet access method, online concentration, and tiltedly the net angle is very big with the difference of the different needed papermaking process of proportioning, these factors all will have a strong impact on the mechanical strength of paper, evenness etc.
The inventor is at the problems referred to above, and change-place-reflect has proposed a kind of method for preparing the meta-aramid insulating paper from another angle.The method according to this invention solved the uniformity, the flatness of aramid fiber paper and improves the problem of mechanical strength in the papermaking stage.
Summary of the invention
The object of the invention is to provide a kind of preparation method of aramid fiber insulating paper.The present invention adopts oblique net paper machine, and the oblique net angle of employed paper machine can be regulated, and in oblique sieve bottom shake equipment is installed, and adopts the shake technology, with the further paper web uniformity of improving, thus the intensity of raising aramid fiber insulating paper.
The present invention is the preparation method of pure meta-position aramid fiber paper, adopts the meta-aramid pulp to become paper with the meta-aramid staple fiber, and the production process step is as follows:
A) paper making pulp is prepared: meta-aramid pulp and meta-aramid staple fiber are used hydrabrusher high concentration size degradation respectively.According to required mixed, making beating is discongested, and enters the allotment stock tank, is formulated to required concentration with above-mentioned two kinds of slurries, and slurry enters head box after desander is evolved.
B) net forming on the paper making pulp adopts oblique net forming technology, copies paper and gets the l Water Paper page or leaf.
C) l Water Paper page or leaf press dewatering, drying, the high temperature press polish gets the finished product insulating paper.
Described meta-aramid pulp and meta-aramid staple fiber use at the hydrabrusher size degradation respectively, equipment is vertical high density hydraulic pulper, the pulping mass percentage concentration 9%-13% of meta-aramid pulp, the pulping mass percentage concentration 9%-13% of meta-aramid staple fiber.
Meta-aramid pulp slurry and meta-aramid staple fiber slurry enter the pond of sizing mixing with certain proportion to be mixed.The model difference of finished product insulation aramid fiber paper, and can regulate the ratio of pulp and staple fiber slurry.The content that contains the meta-aramid pulp in the meta-aramid insulating paper is 20-70% (mass percent); The content that contains the meta-aramid staple fiber in the meta-aramid insulating paper is 30-80% (mass percent).Wherein, the mass percent 50-60% of best meta-aramid pulp, meta-aramid staple fiber content 40-50% are best.
The present invention is when manufacturing paper with pulp the aramid fiber insulating paper, and oblique net paper machine is a best equipment, and tiltedly the net angle can change, and can copy the insulating paper of system different model.The paper machine tiltedly angle of net can be regulated, and tiltedly the net angle is generally at the 5-20 degree.Can copy the aramid fiber insulating paper of system different model.Tiltedly the angle of net changes with the variation of the content of the meta-aramid staple fiber in the aramid fiber insulating paper.The high more required oblique net angle of meta-aramid staple fiber content is big more.The most frequently used angle of oblique net paper machine is the 8-14 degree.Tiltedly the increase of net angle will help aligning of meta-aramid staple fiber, thereby be expected to increase to greatest extent the tearing strength of the meta-aramid insulating paper of preparation.
The present invention installs shaking apparatus in the oblique sieve bottom of paper machine, adopts the shake technology when the paper moulding is copied in the paper making pulp online.The shake of forming table makes the paper making pulp vibration evenly, reduces fiber and flocculates on forming table, makes the thickness of paper web consistent with quantitative and even, improves the uniformity of paper web and poor in length and breadth.Shaking apparatus of the present invention adopts little amplitude and the high time mode of shaking, and amplitude is at 2-8mm, and shake is inferior, and the amplitude of best shaking apparatus is 3-6mm at 260-370 time/min, and shake is inferior to be 290-330 time/min.
The present invention adopts low speed paper machine to copy paper, adopts paper machine speed to regulate, at 30-90m/min.
The present invention starches speed and oblique net network speed all can be regulated, and recently changes the poor in length and breadth of l Water Paper page or leaf paper web by regulating the slurry net.Meta-aramid insulation paper pulp speed to the ratio of network speed at 1.03-1.15.
Press dewatering of the present invention, adopt shoe-press, the shoe-press nip is wide, water separation capability is good, and can be at its pressure curve of page traffic direction adjusted, by adjusting it is risen in entrance pressure district one lateral pressure slower, and descend very fast in outgoing nip one lateral pressure, it is wet that page is difficult for back, can improve the mass dryness fraction that page enters drying section.
Drying steps of the present invention is many drying cylinders formula drying device, adopts the two-sided drying of contact drying cylinder, and drying cylinder is the vapor recycle heating means.Baking temperature is generally 100-120 ℃,
Dried meta-position aramid fiber paper obtains required finished product insulating paper after the high temperature press polish, curling.
The specific embodiment
More than be the description of this invention, will do further explanation material source to claim of the present invention by the specific embodiment below:
Meta-aramid pulp: provide or the market purchase by holy Europe (Suzhou) security protection Materials Co., Ltd;
The meta-aramid staple fiber: holy Europe (Suzhou) security protection Materials Co., Ltd provides or market is bought.
When the paper performance of manufacturing paper with pulp out in to exemplifying embodiment detects, use following detection method: quantitative GB/T 451.3-2002, thickness G B/T 451.3-2002, tightness GB/T 451.3-2002, tensile strength GB/T 453-2002, percentage elongation GB/T 453-2002, tearing strength GB/T 455-2002.
Embodiment 1
Make the aramid fiber insulating paper according to following proportioning, meta-aramid pulp 10% enters dump chest at the hydrabrusher size degradation after the screening.Meta-aramid staple fiber 10% is at the hydrabrusher size degradation.Meta-aramid pulp slurry and meta-aramid staple fiber slurry entered the allotment stock tank according to 3: 2, and making beating is discongested, and paper is copied in online, and the slurry net is than 1.08, and tiltedly net angle 12 degree adopt the shake technology, and after the squeezing drying, press polish obtains finished paper.Finished paper is that the ratio of pulp and staple fiber is 60: 40, and the finished paper testing result that obtains is as shown in table 1.
Embodiment 2
Make the aramid fiber insulating paper according to following proportioning, meta-aramid pulp 10% enters dump chest at the hydrabrusher size degradation after the screening.Meta-aramid staple fiber 10% is at the hydrabrusher size degradation.Meta-aramid pulp slurry and meta-aramid staple fiber slurry entered the allotment stock tank according to 2: 8, and making beating is discongested, and paper is copied in online, and the slurry net is than 1.08, and tiltedly net angle 6 degree adopt the shake technology, and after the squeezing drying, press polish obtains finished paper.Finished paper is that the ratio of pulp and staple fiber is 20: 80, and the finished paper performance test results that obtains is as shown in table 1.
Embodiment 3
Make the aramid fiber insulating paper according to following proportioning, meta-aramid pulp 10% enters dump chest at the hydrabrusher size degradation after the screening.Meta-aramid staple fiber 10% is at the hydrabrusher size degradation.Meta-aramid pulp slurry and meta-aramid staple fiber slurry entered the allotment stock tank according to 7: 3, and making beating is discongested, and paper is copied in online, and the slurry net is than 1.08, and tiltedly net angle 19 degree do not adopt the shake technology, and after the squeezing drying, press polish obtains finished paper.Finished paper is that the ratio of pulp and staple fiber is 70: 30, the finished paper performance test results such as the table 1 that obtain.
Comparative Examples 1
Make the aramid fiber insulating paper according to following proportioning, meta-aramid pulp 10% enters dump chest at the hydrabrusher size degradation after the screening.Meta-aramid staple fiber 10% is at the hydrabrusher size degradation.Meta-aramid pulp slurry and meta-aramid staple fiber slurry entered the allotment stock tank according to 3: 2, and making beating is discongested, and paper is copied in online, and the slurry net is than 1.08, and tiltedly net angle 12 degree do not adopt the shake technology, and after the squeezing drying, press polish obtains finished paper.Finished paper is that the ratio of pulp and staple fiber is 60: 40, the finished paper performance test results such as the table 1 that obtain.
Claims (10)
1. the preparation method of a meta-aramid insulating paper adopts the fine short dimension of cutting of meta-aramid pulp and meta-aramid to make paper, may further comprise the steps:
A) paper making pulp is prepared: meta-aramid pulp and meta-aramid staple fiber be the hydrabrusher size degradation respectively; According to required mixed, making beating is discongested, and enters the allotment stock tank with above-mentioned two kinds of slurries, the concentration of allotment paper making pulp, and slurry enters head box after desander is evolved;
B) net forming on the paper making pulp; Copy paper and get the l Water Paper page or leaf;
C) l Water Paper page or leaf press dewatering, drying, the high temperature press polish gets the finished product insulating paper;
It is characterized in that: adopt oblique net forming technology in step b), the oblique net angle of the oblique net paper machine of use is regulated according to the difference of meta-aramid insulating paper model, and in that shaker tiltedly is installed, adopts the shake technology on the net.
2. method according to claim 1 is characterized in that the oblique net angle of described oblique net paper machine is the 5-20 degree.
3. method according to claim 1 and 2, the angle that it is characterized in that oblique net paper machine is the 8-14 degree.
4. method according to claim 1 is characterized in that described shaker adopts little amplitude and high shake time mode, and amplitude is at 2-8mm, and shake is inferior to 260-370 time/min.
5. according to claim 1 or 4 described methods, the amplitude that it is characterized in that shaker is 3-6mm, and shake is inferior to be 290-330 time/min.
6. method according to claim 1 is characterized in that the mass percentage content of the meta-aramid insulating paper interposition aramid fiber paper pulp dregs of rice is 20-70%, and surplus is the meta-aramid staple fiber.
7. method according to claim 6 is characterized in that the mass percentage content of meta-aramid insulating paper interposition Fanglun slurry cake is 50-60%, and surplus is the meta-aramid staple fibre.
8. method according to claim 1 is characterized in that copying paper and adopts low speed paper machine, and the speed of a motor vehicle is between 30-90m/min.
9. method according to claim 1, the ratio of slurry speed and oblique net network speed is 1.03-1.15 when it is characterized in that papermaking.
10. according to the described method of claim 1, it is characterized in that:
(1) press dewatering adopts shoe-press, at its pressure curve of page traffic direction adjusted, one lateral pressure rising in entrance pressure district is slower again to make it by adjusting, and it is very fast to descend in outgoing nip one lateral pressure, and it is wet that page is difficult for back, and the raising page enters drying section and gets mass dryness fraction;
(2) baking temperature is 100-120 ℃.
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| CN2011101953881A CN102261009A (en) | 2011-07-13 | 2011-07-13 | Preparation method of aramid insulating paper |
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| CN2011101953881A CN102261009A (en) | 2011-07-13 | 2011-07-13 | Preparation method of aramid insulating paper |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660795A (en) * | 2012-05-29 | 2012-09-12 | 四川力通复合材料科技有限公司 | Production method of meta-position aramid paper fibrid |
| CN103321085A (en) * | 2013-06-13 | 2013-09-25 | 华南理工大学 | Meta-position aramid fiber paper with high physical strength insulativity as well as preparation method and application thereof |
| CN103485241A (en) * | 2013-09-14 | 2014-01-01 | 湖南新科绝缘材料有限公司 | Extra-high voltage composite insulating paper preparation method |
| CN103489542A (en) * | 2013-09-14 | 2014-01-01 | 衡阳恒缘电工材料有限公司 | Method for manufacturing extra-high-voltage composite insulation paper board |
| CN104594107A (en) * | 2014-12-29 | 2015-05-06 | 圣欧芳纶（江苏）股份有限公司 | Preparation method of meta-position aramid fiber synthetic fiber paper of imitated rice paper |
| CN106758484A (en) * | 2015-11-24 | 2017-05-31 | 株洲时代新材料科技股份有限公司 | A kind of preparation method of aramid fiber cardboard |
| CN107090734A (en) * | 2017-05-30 | 2017-08-25 | 李晓旭 | A kind of preparation technology of the chopped paper of aramid fiber |
| CN108894048A (en) * | 2018-07-20 | 2018-11-27 | 上海圣欧同安防护用品开发有限公司 | A kind of aramid paper forming method |
| CN109082944A (en) * | 2018-09-30 | 2018-12-25 | 深圳昊天龙邦复合材料有限公司 | Novel aramid fiber paper-based copper-coated board and preparation method thereof |
| CN110331617A (en) * | 2019-08-09 | 2019-10-15 | 浙江华邦特种纸业有限公司 | Aramid Paper copy paper moulding process and equipment |
| CN112709096A (en) * | 2019-10-26 | 2021-04-27 | 南通亚振电力科技有限公司 | High-tensile-strength insulating crepe paper and processing technology thereof |
| CN114837013A (en) * | 2022-05-18 | 2022-08-02 | 超美斯新材料股份有限公司 | Aramid paper re-copying method and system |
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| CN2871605Y (en) * | 2005-10-09 | 2007-02-21 | 临清银河纸业有限责任公司 | Netting shake vibrator of papermaker |
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| CN101748646A (en) * | 2009-12-31 | 2010-06-23 | 烟台美士达特种纸业股份有限公司 | Stuff used for preparing meta-aramid paper, the production method thereof and meta-aramid paper made from the stuff and the production method thereof |
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| CN2871605Y (en) * | 2005-10-09 | 2007-02-21 | 临清银河纸业有限责任公司 | Netting shake vibrator of papermaker |
| CN1834342A (en) * | 2006-04-13 | 2006-09-20 | 烟台氨纶股份有限公司 | Meta aramid fibre paper and prepn. process |
| CN1932148A (en) * | 2006-09-30 | 2007-03-21 | 烟台氨纶股份有限公司 | Aryl fibre paper with aryl fibre choped stand as raw material and producing method thereof |
| CN101748646A (en) * | 2009-12-31 | 2010-06-23 | 烟台美士达特种纸业股份有限公司 | Stuff used for preparing meta-aramid paper, the production method thereof and meta-aramid paper made from the stuff and the production method thereof |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660795B (en) * | 2012-05-29 | 2014-11-19 | 四川力通复合材料科技有限公司 | Production method of meta-position aramid paper fibrid |
| CN102660795A (en) * | 2012-05-29 | 2012-09-12 | 四川力通复合材料科技有限公司 | Production method of meta-position aramid paper fibrid |
| CN103321085A (en) * | 2013-06-13 | 2013-09-25 | 华南理工大学 | Meta-position aramid fiber paper with high physical strength insulativity as well as preparation method and application thereof |
| CN103321085B (en) * | 2013-06-13 | 2015-07-01 | 华南理工大学 | Meta-position aramid fiber paper with high physical strength insulativity as well as preparation method and application thereof |
| CN103489542B (en) * | 2013-09-14 | 2016-06-29 | 湖南恒缘新材科技股份有限公司 | The preparation method of extra-high-voltage composite insulation paper board |
| CN103489542A (en) * | 2013-09-14 | 2014-01-01 | 衡阳恒缘电工材料有限公司 | Method for manufacturing extra-high-voltage composite insulation paper board |
| CN103485241B (en) * | 2013-09-14 | 2015-12-02 | 湖南新科绝缘材料有限公司 | The preparation method of extra-high-voltage composite insulation paper |
| CN103485241A (en) * | 2013-09-14 | 2014-01-01 | 湖南新科绝缘材料有限公司 | Extra-high voltage composite insulating paper preparation method |
| CN104594107A (en) * | 2014-12-29 | 2015-05-06 | 圣欧芳纶（江苏）股份有限公司 | Preparation method of meta-position aramid fiber synthetic fiber paper of imitated rice paper |
| CN106758484B (en) * | 2015-11-24 | 2019-08-09 | 株洲时代新材料科技股份有限公司 | A kind of preparation method of aramid fiber cardboard |
| CN106758484A (en) * | 2015-11-24 | 2017-05-31 | 株洲时代新材料科技股份有限公司 | A kind of preparation method of aramid fiber cardboard |
| CN107090734B (en) * | 2017-05-30 | 2019-08-16 | 南通新源特种纤维有限公司 | A kind of preparation process of the chopped paper of aramid fiber |
| CN107090734A (en) * | 2017-05-30 | 2017-08-25 | 李晓旭 | A kind of preparation technology of the chopped paper of aramid fiber |
| CN108894048A (en) * | 2018-07-20 | 2018-11-27 | 上海圣欧同安防护用品开发有限公司 | A kind of aramid paper forming method |
| CN109082944A (en) * | 2018-09-30 | 2018-12-25 | 深圳昊天龙邦复合材料有限公司 | Novel aramid fiber paper-based copper-coated board and preparation method thereof |
| CN110331617A (en) * | 2019-08-09 | 2019-10-15 | 浙江华邦特种纸业有限公司 | Aramid Paper copy paper moulding process and equipment |
| CN110331617B (en) * | 2019-08-09 | 2021-10-01 | 浙江华邦特种纸业有限公司 | Paper making and forming process and equipment for aramid paper-based composite material |
| CN112709096A (en) * | 2019-10-26 | 2021-04-27 | 南通亚振电力科技有限公司 | High-tensile-strength insulating crepe paper and processing technology thereof |
| CN114837013A (en) * | 2022-05-18 | 2022-08-02 | 超美斯新材料股份有限公司 | Aramid paper re-copying method and system |
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