CN104818647A - Method for producing aramid fiber insulation paper from m-aramid fibers and m-aramid pulp - Google Patents
Method for producing aramid fiber insulation paper from m-aramid fibers and m-aramid pulp Download PDFInfo
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Abstract
The invention discloses a method for producing an aramid fiber insulation paper from m-aramid fibers and m-aramid pulp. The method comprises the following steps of a, respectively carrying out pre-treatment dispersion on m-aramid fibers and m-aramid pulp by an ultrasonic processor, b, respectively carrying out surface treatment on the m-aramid fibers and the m-aramid pulp by low temperature plasma, c, mixing the m-aramid fibers and the m-aramid pulp in clear water, adding a dispersant and conducting particles into the mixture, and carrying out pulping by a trench type pulping device to obtain aramid pulp, d, carrying out papermaking molding on the aramid pulp by an inclined wire papermaking machine, carrying out squeezing by an oil squeezing machine and carrying out full drying to obtain a raw aramid paper, and e, carrying out pre-hot-pressing on the raw aramid paper by a pre-hot-pressing device, and carrying out hot-pressing by a roller-type hot press to obtain the aramid fiber insulation paper. The aramid fiber insulation paper can conduct static electricity on the premise of insulation relative to an electronic product, can prevent electrostatic integrating-caused m-aramid fiber paper breakdown and is safe and practical.
Description
Technical field
The present invention relates to a kind of method of producing aramid insulating paper, particularly relate to a kind of method adopting meta-aramid fibers and meta-aramid pulp to produce aramid insulating paper.
Background technology
Along with society and expanding economy, various motor, transformer and other electronic equipment develop rapidlys, bearing capacity requires also more and more higher, electronic equipment, in the process using, transport and load and unload, due to friction, is easy to produce electrostatic charge, if these electrostatic charges shift not in time or discharge and accumulate, add that in air, itself, easily containing some inflammable materials, will produce blast, even breaking out of fire.
United States Patent (USP) 2010206502 relates to a kind of preparation of aramid fiber conductive strips, the specifically aramid fiber short fibre of 5-65wt%, the Fanglun slurry cake of 30-90wt%, the conductive filler of 1-20wt%, wherein conductive filler is using three component of carbon black as slurries, because carbon black is inorganic particle, conductance is smaller, and can precipitate in the suspension slurry based on organic matter, form uneven slurries, thus cause the uneven conduction of aramid fiber conductive strips, the position that conductive materials is few, Electro-static Driven Comb reduces, long-term accumulated, easily cause puncturing or exploding, add that the color of carbon black is black, affect the outward appearance of aramid paper, limit its range of application.
Chinese patent 201310339402.X provides a kind of preparation of conducing composite material, be specifically core with PPTA, polyaniline is the conducing composite material of shell is raw material, this conducing composite material can prepare conductive fiber, but because PPTA is rigid molecule, be wound around time easily rupture, therefore can not prepare can do platinum around conductive strips paper, cannot use in motor and transformer.
The strand of poly(isophthaloyl metaphenylene diamine) has certain flexibility, general between rigid molecule and flexible molecule, therefore the fiber prepared and paper have certain toughness, winding be less likely to occur fracture, usually, Fanglun 1313 is called meta-aramid, the meta-aramid insulating paper prepared together with pulp by meta-aramid staple fibre is in Aero-Space, national defense and military there is irreplaceable effect, but meta-position aramid fiber paper is in use, be easy to produce electrostatic when transport and handling, buildup of static electricity can puncture aramid paper after a certain amount of, have a strong impact on use, therefore a kind of aramid paper that can conduct electricity newly of necessary research and development solves the problems referred to above.
Summary of the invention
The object of the present invention is to provide and a kind ofly conducting static electricity, the employing meta-aramid fibers preventing buildup of static electricity and meta-aramid pulp can produce the method for aramid insulating paper.
To achieve these goals, the technical solution adopted in the present invention is as follows:
Adopt meta-aramid fibers and meta-aramid pulp to produce a method for aramid insulating paper, comprise the following steps:
A) meta-aramid fibers and meta-aramid pulp are disperseed with processor for ultrasonic wave preliminary treatment respectively, the treatment conditions of described processor for ultrasonic wave are: power 960W, and the intermittent time is 4s, and total time is 40min, and beating degree is 56-57 ° of SR;
B) meta-aramid fibers and meta-aramid pulp are carried out surface treatment with low temperature plasma respectively, the treatment conditions of described low temperature plasma are: power 95-96W, and pressure is 80-85Pa, and the processing time is 6min;
C) meta-aramid fibers and meta-aramid pulp are mixed in clear water, the content of described aramid fiber and meta-aramid pulp, than being 2:3, adds dispersant and conducting particles, with trough-style pulp beater making beating, makes aramid fiber slurry;
D) described aramid fiber slurry is manufactured paper with pulp shaping on oblique net paper machine, after hydraulic press squeezing, fully dry, obtain aramid fiber body paper;
E) described aramid fiber body paper is carried out pre-hot pressing through pre-thermal compressor, then carry out hot pressing with roll-type hot press, obtain finished product aramid insulating paper.
Preferably, described conducting particles is one or both in copper or carbon black.
Preferably, the time of described pre-hot pressing is 55-57s, and pre-hot pressing temperature is 100 °.
Preferably, described hot pressing condition is: temperature is 275 °-280 °, and pressure is 19-20MPa, and roller speed is 2.1-2.3m/min, and hot pressing time is 11-13min.
Preferably, described body paper is quantitatively 55-120g/m
2.
Compared with prior art, the beneficial effect that the present invention adopts meta-aramid fibers and meta-aramid pulp to produce the method for aramid insulating paper is: the aramid insulating paper that the present invention makes can ensure conducting static electricity under the prerequisite with electronic product opposing insulation, prevent buildup of static electricity from causing meta-position aramid fiber paper breakdown, safe and practical.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described further.
Adopt meta-aramid fibers and meta-aramid pulp to produce a method for aramid insulating paper, comprise the following steps:
A) meta-aramid fibers and meta-aramid pulp are disperseed with processor for ultrasonic wave preliminary treatment respectively, the treatment conditions of described processor for ultrasonic wave are: power 960W, and the intermittent time is 4s, and total time is 40min, and beating degree is 56-57 ° of SR;
B) meta-aramid fibers and meta-aramid pulp are carried out surface treatment with low temperature plasma respectively, the treatment conditions of described low temperature plasma are: power 95-96W, and pressure is 80-85Pa, and the processing time is 6min;
C) meta-aramid fibers and meta-aramid pulp are mixed in clear water, the content of described aramid fiber and meta-aramid pulp, than being 2:3, adds dispersant and conducting particles, with trough-style pulp beater making beating, makes aramid fiber slurry;
D) described aramid fiber slurry is manufactured paper with pulp shaping on oblique net paper machine, after hydraulic press squeezing, fully dry, obtain aramid fiber body paper;
E) described aramid fiber body paper is carried out pre-hot pressing through pre-thermal compressor, then carry out hot pressing with roll-type hot press, obtain finished product aramid insulating paper.
Wherein, described conducting particles is one or both in copper or carbon black.The time of described pre-hot pressing is 55-57s, and pre-hot pressing temperature is 100 °.Described hot pressing condition is: temperature is 275 °-280 °, and pressure is 19-20MPa, and roller speed is 2.1-2.3m/min, and hot pressing time is 11-13min.The quantitative of described body paper is 55-120g/m2.
When practical application, described meta-aramid fibers and meta-aramid pulp can also carry out cleaning in advance, thus promote the quality of finished product aramid insulating paper.
In sum, the aramid insulating paper that the present invention makes is conducting particles due to inner admixture, has certain electric conductivity, thus can ensure conducting static electricity under the prerequisite with electronic product opposing insulation, prevent buildup of static electricity from causing meta-position aramid fiber paper breakdown, safe and practical.The electrostatic charge generation of the electronic equipment that the content of described conducting particles can be applied according to aramid insulating paper adjusts, thus adjustment conductance.
Schematically above be described the present invention and embodiment thereof, this description does not have restricted, and actual operating procedure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the frame mode similar to this technical scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.
Claims (5)
1. adopt meta-aramid fibers and meta-aramid pulp to produce a method for aramid insulating paper, it is characterized in that, comprise the following steps:
A) meta-aramid fibers and meta-aramid pulp are disperseed with processor for ultrasonic wave preliminary treatment respectively, the treatment conditions of described processor for ultrasonic wave are: power 960W, and the intermittent time is 4s, and total time is 40min, and beating degree is 56-57 ° of SR;
B) meta-aramid fibers and meta-aramid pulp are carried out surface treatment with low temperature plasma respectively, the treatment conditions of described low temperature plasma are: power 95-96W, and pressure is 80-85Pa, and the processing time is 6min;
C) meta-aramid fibers and meta-aramid pulp are mixed in clear water, the content of described aramid fiber and meta-aramid pulp, than being 2:3, adds dispersant and conducting particles, with trough-style pulp beater making beating, makes aramid fiber slurry;
D) described aramid fiber slurry is manufactured paper with pulp shaping on oblique net paper machine, after hydraulic press squeezing, fully dry, obtain aramid fiber body paper;
E) described aramid fiber body paper is carried out pre-hot pressing through pre-thermal compressor, then carry out hot pressing with roll-type hot press, obtain finished product aramid insulating paper.
2. the as claimed in claim 1 method adopting meta-aramid fibers and meta-aramid pulp to produce aramid insulating paper, is characterized in that, described conducting particles is one or both in copper or carbon black.
3. the method adopting meta-aramid fibers and meta-aramid pulp to produce aramid insulating paper as claimed in claim 1, it is characterized in that, the time of described pre-hot pressing is 55-57s, and pre-hot pressing temperature is 100 °.
4. the method adopting meta-aramid fibers and meta-aramid pulp to produce aramid insulating paper as claimed in claim 1, it is characterized in that, described hot pressing condition is: temperature is 275 °-280 °, and pressure is 19-20MPa, roller speed is 2.1-2.3m/min, and hot pressing time is 11-13min.
5. the method adopting meta-aramid fibers and meta-aramid pulp to produce aramid insulating paper as claimed in claim 1, it is characterized in that, the quantitative of described body paper is 55-120g/m
2.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107723829A (en) * | 2017-10-17 | 2018-02-23 | 蓝星（成都）新材料有限公司 | A kind of manufacture method of new aramid insulating paper |
| CN109024094A (en) * | 2018-08-13 | 2018-12-18 | 华南理工大学 | A kind of micro nanometer fiber cellulose fiber/aramid fiber composite-insulating paper and preparation method thereof |
Citations (5)
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| CN102154914A (en) * | 2011-02-24 | 2011-08-17 | 钟洲 | Method for preparing aramid paper and aramid paper prepared by method |
| CN103174053A (en) * | 2013-03-26 | 2013-06-26 | 陕西科技大学 | Production method for aramid fiber 1414 paper substrate material |
| CN103572640A (en) * | 2013-10-24 | 2014-02-12 | 陕西科技大学 | Method for preparing para aramid paper from para aramid fibrid |
| CN103582731A (en) * | 2011-04-07 | 2014-02-12 | 杜邦帝人先进纸（日本）有限公司 | Conductive aramid paper and method for producing same |
| WO2014123191A1 (en) * | 2013-02-08 | 2014-08-14 | デュポン帝人アドバンスドペーパー株式会社 | Colored aramid paper and process for producing same |
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- 2015-04-01 CN CN201510152774.0A patent/CN104818647A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102154914A (en) * | 2011-02-24 | 2011-08-17 | 钟洲 | Method for preparing aramid paper and aramid paper prepared by method |
| CN103582731A (en) * | 2011-04-07 | 2014-02-12 | 杜邦帝人先进纸（日本）有限公司 | Conductive aramid paper and method for producing same |
| WO2014123191A1 (en) * | 2013-02-08 | 2014-08-14 | デュポン帝人アドバンスドペーパー株式会社 | Colored aramid paper and process for producing same |
| CN103174053A (en) * | 2013-03-26 | 2013-06-26 | 陕西科技大学 | Production method for aramid fiber 1414 paper substrate material |
| CN103572640A (en) * | 2013-10-24 | 2014-02-12 | 陕西科技大学 | Method for preparing para aramid paper from para aramid fibrid |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107723829A (en) * | 2017-10-17 | 2018-02-23 | 蓝星（成都）新材料有限公司 | A kind of manufacture method of new aramid insulating paper |
| CN109024094A (en) * | 2018-08-13 | 2018-12-18 | 华南理工大学 | A kind of micro nanometer fiber cellulose fiber/aramid fiber composite-insulating paper and preparation method thereof |
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Application publication date: 20150805 |