CN1456719A - Production of aromatic copolymide fiber dissolving pulp - Google Patents
Production of aromatic copolymide fiber dissolving pulp Download PDFInfo
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- CN1456719A CN1456719A CN03129083A CN03129083A CN1456719A CN 1456719 A CN1456719 A CN 1456719A CN 03129083 A CN03129083 A CN 03129083A CN 03129083 A CN03129083 A CN 03129083A CN 1456719 A CN1456719 A CN 1456719A
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- Prior art keywords
- aramid fiber
- slurry cake
- fanglun slurry
- cut
- manufacture method
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
A process for preparing the aramid fiber pulp features that the leftover of aramid fibre is physically treated to become microfibrils with large specific surface area. It can be used as friction material, sealing material and filler.
Description
Technical field:
The invention belongs to the high polymer technical field.Be specifically related to a kind of aramid fiber leftover pieces that utilize and be raw material, make the method for Fanglun slurry cake.
Background technology:
Fanglun slurry cake is a kind of aramid fiber commercial product of du pont company, Dutch Teijin Twaron company abroad, obtains the Fanglun slurry cake product by monomer polymerization, spinning, coiling boundling, cut-out, grinding brooming.The manufacture method of commercial Fanglun slurry cake (as No. 3767756, United States Patent (USP)) needs become polymer through monomer polymerization, be dissolved in and make the high molecule liquid crystal spinning solution in the concentrated sulfuric acid, dry-wet spinning is shaped, reel and cut off, processing steps such as the beating of pulling an oar again, its technological process is long, needs solvent recovery, special spinning equipment, thereby the cost costliness.Also become fine manufactured Fanglun slurry cake with direct polycondensation in recent years, as E.I.Du Pont Company's patent " spy opens flat 4-245908 ", the Chinese patent of China Textile University: ZL92103843.7 has shortened pulp manufacturing technique route, but still has problems such as solvent recovery.World's aramid fiber total output is about more than 35,000 tons/years at present, China's consumption figure has reached more than 1500 ton/year, when using, can produce a considerable number of aramid fiber tailing, new by looking into of domestic and international pertinent literature database, with the relevant document of waste aramid material renewable resource utilization technology, as the short machine that prescinds of cutting artificial fibre that is used for of Pierret factory in 1999 developmental research, aramid fiber, carbon fiber etc. is recycled after prescinding; The recycling of spinning solution in Hoechst ' the Kelheim plant produced aramid fiber in 1992; Dell ' Orco ﹠amp in 1992; The waste textile that CAD is arranged (comprising aramid fiber, the carbon fiber) recovery and utilization technology of the exploitation cut-out of Vilani branch department, shredding, mixing all is the recovery of textiles aspect.
Advantage such as that Fanglun slurry cake has is tough, high elastic modulus, high-fire resistance, not fusion, specific area are big, wear-resistant, thereby alternative asbestos material, of many uses as the reinforcer in asbestos less friction, the encapsulant.The manufacture method of commercial Fanglun slurry cake its technological process as previously mentioned is long, needs solvent recovery, special spinning equipment, thereby the cost costliness.Even adopt direct polycondensation to become fine method, shortened pulp manufacturing technique route, but still had problem such as solvent recovery.
Summary of the invention:
Technical problem to be solved by this invention is to overcome above-mentioned weak point, designs a kind of minimizing three-waste pollution, can make full use of the method for the new manufacturing Fanglun slurry cake of aramid fiber tailing again.
The invention provides a kind of new method of utilizing the aramid fiber leftover pieces to make Fanglun slurry cake, this method is for cutting off the aramid fiber leftover pieces with mechanical cutter (EAI-500U type), make filamentary average length be distributed as 0.1～10.0mm, be dispersed in the suspension that becomes 0.1%～5.0% concentration in the water, slurries are again by single-deck grinding machine (Sprout-Bauer300 type) beating brooming, the beating time is 30～1800s, join in the trough-style pulp beater again, beating time is 0.5～5.0 hour, thereby obtains Fanglun slurry cake.
Manufacture method of the present invention relates to the forming technology technology that changes the aramid short fiber display form with physical mechanical method, belongs to the high polymer manufacture method of physical mechanical.
Technical characterictic of the present invention is to adopt aramid fiber buckram corner piece material,, 30～500cm long arrangement wide as 5～500mm by definite shape mixed and disorderly aramid fiber leftover pieces sorted out, be cut into the cloth that 2～200mm is wide, 30～500cm is long with scissors, use the mechanical cutting machine, be cut into the staple fiber that length-specific is 0.5～10.0mm.This staple fibre is scattered in that to make concentration in the water be 0.1%～5.0% suspension, and this a kind of stoste is disperseed through disc mill beating, and the beating time is 30～1800s, forms paper pulp shape stoste, and slurries are discongested further little fibrillation, make the Fanglun slurry cake product.
Compare prior art, the present invention has following characteristics:
1. adopting the aramid fiber leftover pieces is raw material, without the chemical polymerization method, and uses physical mechanical method, reaches the utilization again of aramid fiber leftover pieces resource, and does not have three wastes environmental protection problem.
2. with the aramid fiber leftover pieces, the Fanglun slurry cake by physical mechanical method makes owing to do not change the chemical constitution of aramid fiber, so kept the excellent in performance of aramid fiber, increases the abundant mode of appearance of its specific area and little fibril again greatly.Its specific area is 5～10M
2/ g, average length is 1.6～2.6mm.
3. with the cut-out technology of fibre cutting machine, making filament length is the staple fibre of 0.5～10.0mm, is convenient to enter beater and produces brooming, little fibrillation.
4. the alternative asbestos of product of the present invention are used for friction, encapsulant, are high performance reinforcers.
The measuring method of Fanglun slurry cake performance is as follows among the present invention:
1. Fanglun slurry cake logarithmic specific concentration viscosity η
Inh
η
Inh=(lnt/t
0)/c (measuring 30 ℃ of temperature)
In the following formula: t-pulp sulfuric acid solution flows through the time capillaceous
t
0It's the time capillaceous is past-sulfuric acid solvent streams
The c-solution concentration
2. the Fanglun slurry cake specific area is used the measurement of BET nitrogen absorption process.
3. Fanglun slurry cake average length.
With the microscope that has cross millimeter scale, measure the about 1mg of pulp sample, average.
The specific embodiment:
Below in conjunction with embodiment the present invention is further described.
Example 1: step 1, with 500 gram aramid fiber leftover pieces, shape is organized into that 50mm is wide, the long cloth of 50cm by size, is cut into the cloth that 2mm is wide, 50cm grows with scissors earlier.Step 2 is put into the mechanical cutting machine to cloth, is cut into 5mm (2 * 5mm fritter) cloth.Step 3 is added to little cloth in the groove that 200kg water is housed and disperses, and by the single-deck grinding machine, the beating time is 300s, obtains paper pulp shape stoste, and regulating its concentration is 2.0%.By trough-style pulp beater, beating time is 2.5h, obtains discongesting pulp liquor again for step 4, the stoste of 2.0% concentration.Step 5, slurries make the Fanglun slurry cake product through centrifugal drying, and its specific area is 6M
2/ g, average length is 2.1mm, logarithmic specific concentration viscosity is 5.1.
Example 2: with 500 gram aramid fiber leftover pieces, preparation process with example 1, the raw material leftover pieces are cut into the cloth of 2 * 10mm, join in the groove of 200kg water and disperse, enter the single-deck grinding machine, the beating time is 300s, the paper pulp shape stoste that obtains, its concentration is 1.5%, passes through trough-style pulp beater then, the time of discongesting is 5h, and the specific area of Fanglun slurry cake is 5.2M after drying
2/ g, average length is 2.4mm, logarithmic specific concentration viscosity is 4.6.
Example 3: with 500 gram aramid fiber corner blankings, step method with example 1, cut into the cloth of 5 * 5mm, join in the groove of 200kg water and disperse, by the disc mill beating time be 600s, obtain paper pulp shape stoste, its concentration is 1.0%, pass through trough-style pulp beater again, the time of discongesting is 3h, and the specific area of Fanglun slurry cake is 6.5M after drying
2/ g, average length is 2.0mm, logarithmic specific concentration viscosity is 5.1.
Claims (5)
1, a kind of manufacture method of Fanglun slurry cake, it is characterized in that this method is to utilize the manufacture method of aramid fiber leftover pieces for the raw material production Fanglun slurry cake, concrete steps are: with mechanical cutter the aramid fiber leftover pieces are cut off, make filamentary average length be distributed as 0.1～10.0mm, be dispersed in the suspension that becomes 0.1%～5.0% concentration in the water, slurries are again by single-deck grinding machine beating brooming, the beating time is 30～1800s, join in the trough-style pulp beater again, beating time is 0.5～5.0 hour, thereby obtains Fanglun slurry cake.
2, the manufacture method of a kind of Fanglun slurry cake according to claim 1, it is characterized in that wherein said method with mechanical cutter cut-out aramid fiber leftover pieces is, 30～500cm long arrangement classification wide by definite shape 5～500mm mixed and disorderly aramid fiber leftover pieces, be cut into the cloth that 2～20cm is wide, 30～500cm is long with scissors, use the mechanical cutting machine, be cut into the staple fiber that length-specific is 0.5～10.0mm.
3, the manufacture method of a kind of Fanglun slurry cake according to claim 1 and 2, its feature also are the staple fiber that 0.5～10.0mm is long, are scattered in the suspension that becomes 0.1%～5.0% concentration in the water.
4, manufacture method according to claim 1 and 2, its feature are that also suspension passes through single-deck grinding machine beating brooming, and its beating time is 30～1800s.
5, according to claim 1 or 2,4 described manufacture methods, its feature is that also slurries will join in the trough-style pulp beater, and beating time is 0.5～5.0 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031290833A CN1191397C (en) | 2003-06-05 | 2003-06-05 | Production of aromatic copolymide fiber dissolving pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031290833A CN1191397C (en) | 2003-06-05 | 2003-06-05 | Production of aromatic copolymide fiber dissolving pulp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1456719A true CN1456719A (en) | 2003-11-19 |
| CN1191397C CN1191397C (en) | 2005-03-02 |
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ID=29411721
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031290833A Expired - Fee Related CN1191397C (en) | 2003-06-05 | 2003-06-05 | Production of aromatic copolymide fiber dissolving pulp |
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| Country | Link |
|---|---|
| CN (1) | CN1191397C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100593594C (en) * | 2008-04-01 | 2010-03-10 | 上海依极科技有限公司 | Method for producing aramid fiber pulp by aramid fiber waste material |
| CN101608415B (en) * | 2009-07-03 | 2011-07-20 | 华南理工大学 | Preparation method of aramid fiber powdery pulp for papermaking filling and application thereof in papermaking |
| CN102154912A (en) * | 2011-01-06 | 2011-08-17 | 蓝星（成都）新材料有限公司 | Continuous preparation method of organic fiber pulp |
| CN102535241A (en) * | 2011-06-08 | 2012-07-04 | 王锡璐 | Poly p-phenylene terephthalamide aramid II pulp with high logarithm viscosity and high microfilament and preparation method thereof |
| CN102560748A (en) * | 2011-06-08 | 2012-07-11 | 王锡璐 | Recovery process of waste materials generated in industrial manufacture process of poly-p-phenylene terephthamide aramid fiber II |
| CN104594094A (en) * | 2014-12-30 | 2015-05-06 | 深圳昊天龙邦复合材料有限公司 | Method for continuously producing para-aramid pulp |
| CN105220262A (en) * | 2015-08-24 | 2016-01-06 | 江苏先诺新材料科技有限公司 | A kind of polyimides (PI) pulp and preparation method thereof |
| CN108219190A (en) * | 2017-12-19 | 2018-06-29 | 清华大学 | A kind of utilize scraps the method that bulletproof halmet prepares Fanglun slurry cake |
| CN108316038A (en) * | 2018-02-11 | 2018-07-24 | 陕西科技大学 | A method of preparing aramid nano-fiber water-dispersed using reuse p-aramid paper |
| CN108396581A (en) * | 2018-02-06 | 2018-08-14 | 深圳市新纶科技股份有限公司 | A kind of preparation method of fiber pulp and its fiber pulp of preparation |
| CN109706554A (en) * | 2018-12-29 | 2019-05-03 | 江苏宝德新材料有限公司 | A kind of preparation method of high temperature resistant staple fiber |
-
2003
- 2003-06-05 CN CNB031290833A patent/CN1191397C/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100593594C (en) * | 2008-04-01 | 2010-03-10 | 上海依极科技有限公司 | Method for producing aramid fiber pulp by aramid fiber waste material |
| CN101608415B (en) * | 2009-07-03 | 2011-07-20 | 华南理工大学 | Preparation method of aramid fiber powdery pulp for papermaking filling and application thereof in papermaking |
| CN102154912A (en) * | 2011-01-06 | 2011-08-17 | 蓝星（成都）新材料有限公司 | Continuous preparation method of organic fiber pulp |
| CN102154912B (en) * | 2011-01-06 | 2012-07-11 | 蓝星（成都）新材料有限公司 | Continuous preparation method of organic fiber pulp |
| CN102535241A (en) * | 2011-06-08 | 2012-07-04 | 王锡璐 | Poly p-phenylene terephthalamide aramid II pulp with high logarithm viscosity and high microfilament and preparation method thereof |
| CN102560748A (en) * | 2011-06-08 | 2012-07-11 | 王锡璐 | Recovery process of waste materials generated in industrial manufacture process of poly-p-phenylene terephthamide aramid fiber II |
| CN102560748B (en) * | 2011-06-08 | 2013-06-05 | 王锡璐 | Recovery process of waste materials generated in industrial manufacture process of poly-p-phenylene terephthamide aramid fiber II |
| CN104594094A (en) * | 2014-12-30 | 2015-05-06 | 深圳昊天龙邦复合材料有限公司 | Method for continuously producing para-aramid pulp |
| CN105220262A (en) * | 2015-08-24 | 2016-01-06 | 江苏先诺新材料科技有限公司 | A kind of polyimides (PI) pulp and preparation method thereof |
| CN105220262B (en) * | 2015-08-24 | 2019-11-08 | 江苏先诺新材料科技有限公司 | A kind of polyimides (PI) pulp and preparation method thereof |
| CN108219190A (en) * | 2017-12-19 | 2018-06-29 | 清华大学 | A kind of utilize scraps the method that bulletproof halmet prepares Fanglun slurry cake |
| CN108219190B (en) * | 2017-12-19 | 2020-07-03 | 清华大学 | Method for preparing aramid pulp by using scrapped bulletproof helmet |
| CN108396581A (en) * | 2018-02-06 | 2018-08-14 | 深圳市新纶科技股份有限公司 | A kind of preparation method of fiber pulp and its fiber pulp of preparation |
| CN108396581B (en) * | 2018-02-06 | 2020-01-14 | 深圳市新纶科技股份有限公司 | Preparation method of fiber pulp and fiber pulp prepared by preparation method |
| CN108316038A (en) * | 2018-02-11 | 2018-07-24 | 陕西科技大学 | A method of preparing aramid nano-fiber water-dispersed using reuse p-aramid paper |
| CN109706554A (en) * | 2018-12-29 | 2019-05-03 | 江苏宝德新材料有限公司 | A kind of preparation method of high temperature resistant staple fiber |
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| Publication number | Publication date |
|---|---|
| CN1191397C (en) | 2005-03-02 |
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Granted publication date: 20050302 Termination date: 20120605 |