CN1298898C - Polyfiber containing structure of nano carbon tubes - Google Patents
Polyfiber containing structure of nano carbon tubes Download PDFInfo
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- CN1298898C CN1298898C CNB2005100555260A CN200510055526A CN1298898C CN 1298898 C CN1298898 C CN 1298898C CN B2005100555260 A CNB2005100555260 A CN B2005100555260A CN 200510055526 A CN200510055526 A CN 200510055526A CN 1298898 C CN1298898 C CN 1298898C
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Abstract
The present invention discloses a kind of polyfiber containing structure of Nano carbon tubes which belongs to chemical material preparation technology field.On the forming process of polyfiber containing structure of Nano carbon tubes,at first,weigh carbon nano-tubes,polyfiber and adhensive triacetin mixing,then dispersing by ultrasonic oscillation,adding the composite adhesive into polyfiber,making one end of the carbon nuno-tube felt to or insert the polyfiber through multi procedure such as melting spinning thermal setting etc.and making the other end free outside showing caterpillar shape,the carbon nano-tubes on the each composite fibrils can form nanometer reticular structure mutually and form nanometer filtration channels further.Moreover,the carbon nano-tube possesses effective dasorption capacity ifself and can getter the harmful material between the flue gas fully,also it can be knitted into fiber cloth using for medical mask and preventing SARS.The polyfiber becomes a nanofiltration material of essence significance.
Description
Technical field
The invention belongs to the industrial chemicals preparing technical field, particularly a kind of polymer fiber of carbon nanotubes structure.
Background technology
Cigarette can produce a large amount of flue gases in combustion process, flue gas is a kind of aerosol of multiphase mixture, is made of mutually the particle of continuous gaseous substance and dispersion.The main flume that cigarette burning produces sucks the oral cavity by filter tip, and the main flume grain contains harmful substances such as tar, nicotine in mutually.They are by cigarette filter the time, partly adsorbed and be trapped on the cigarette filter, have multiple volatility and nonvolatile organic compound in the flue gas, as carboxylic acid, aldehyde, ketone, alcohol, nicotine, ester class, phenols, terpenes, alkanes, vegetable soda and moisture etc.The chemical composition of flue gas is very complicated, greatly about more than 5200 kinds.Introductions such as nineteen eighty-two Mfdube, that has identified out at present has 3875 kinds.Wherein more than ten kind of material such as BaP is universally acknowledged carcinogen, in addition, is cocarcinogen matter as phenols, pyridine radicals acrolein, benzanthracene etc.Along with the propaganda of international anti-smoking campaign with become stronger day by day, impel tobacco business to adapt to this trend, the production security cigarette reduces harmful substances such as tar.Xu Ping, Ning Min, " adding the influence of inorganic salts " in " Chinese tobacco science 1999; (4): 45-47 " such as Sun Fengfei to tar content in cigarette etc., and " succeeding in developing reduction coke tar in cigarette and harmful components filter tip in the U.S. " among the Zhao Baidong " Chinese tobacco journal 2000; 6 (3): 26 " reported the method for adding inorganic salts by toward filter-tip polymer fiber silk, change nicotine and cigarette interior quality.People such as Liu Ruoman are at " active carbon is to the adsorption effect of hazardous trace elements in the smoke from cigarette " and the Zhang Gaoke of " environment and health magazine 1999; 16 (4): 203-204 ", Cui Guozhi has reported in " development that sepiolite type tobacco smoke filter element is chewed " of " building materials geology 1997; (1): 33-35 " and introduced adsorbability materials such as active carbon layer or sepiolite in cigarette filter, to reach the purpose that removes harmful substance to a certain extent.The generation of nano science can be rated as the revolution in the history of science.Characteristics such as the small-size effect of nano material, surface interface effect, quantum size effect are with a wide range of applications it, have been used as catalyst, additive and have made the important source material of new functional material.People such as Zhang Youjin are report in " nano material reduces the researchs of cigarette smoke grain phase harmful components " of " chemical research and application 2001,13 (6): 709-711 ", respectively with nano material Al
2O
3, SiO
2, TiO
2Sneak in the filter tip or original position fusion blending spinning joins in the polymer filtration silk in the filter tip by direct mixing, to the cigarette smoke grain mutually in the removal of harmful substances such as tar, nicotine played certain effect.
People such as Wang Shuguang are at " fluorine ion in carbon nanotube loaded aluminium oxide and the adsorbed water thereof " of " Science Bulletin 2002; 47 (1): 14-16 ", " dsorption of cadmium (II) the from aqueous solution bysurface oxidized carbon nanotubes " of people " Chemical Physics Letters; 2002; (357): 263-266 " such as Yan-Hui Li " adsorption on carbon nanotubes. " and " Carbon; 2003; (41): 1057-1062 ". middle report, CNT (CNTs) has the structure of unique one dimension fibre, nano level diameter, high effective ratio area and high draw ratio, chemical property is stable, is considered to a kind of good adsorption filtering material.
Summary of the invention
The polymer fiber that the purpose of this invention is to provide a kind of carbon nanotubes structure.It is characterized in that: the polymer fiber of described carbon nanotubes structure is made of CNT and polymer fiber, CNT one end adheres to or inserts in the polymer fiber, outside the other end is free in, form the composite polymer fibers of the carbon nanotubes of " caterpillar " shape.Its manufacture craft is as follows:
1) takes by weighing the CNT and the adhesive glyceryl triacetate that account for glyceryl triacetate quality 20%～50% earlier and mix the composition composite caking agent; The composite caking agent that will account for the 10%-60% of polymer fiber quality again joins in the polymer fiber, disperses with supersonic oscillations, and composite caking agent is joined in the polymer fiber;
2) adopt " PlaTntex-SPA " spinnerets short distance spinning equipment to carry out spinning, spinning process is as follows: the polymer fiber that composite caking agent is arranged that step 1) is obtained carries out melt spinning, its process be oil together, drawing-off, two roads oil, curl, HEAT SETTING, pendulum wire and be packaged into the polymer fiber of carbon nanotubes structure;
Spinning condition: 240～250 ℃ of temperature, winding speed 400m/min;
Stretch and typing: 75 ℃ of draft temperatures, draw ratio 6,130 ℃ of setting temperatures, shaping time 25 minutes, make in adhesion of CNT one end or the insertion polymer fiber, outside the other end is free in, form the composite polymer fibers of the carbon nanotubes of " caterpillar " shape.
Described polymer fiber is polypropylene fibre or acetate fiber
The described He Erdao that oils together oil on oil be glycerine, the mass ratio that accounts for polymer fiber is 0.1%
The invention has the beneficial effects as follows the polymer fiber of CNT being introduced cigarette filter, prepared cigarette filter inside has nano level adsorption filtration duct on thin the sight, and adsorption specific surface area is big, and the absorption property of the excellence of performance CNT.Experimental result shows that the removal efficiency to harmful substance significantly increases.In addition, CNT has firm combining with filament on the filter fiber of nanostructured, and CNT can not be inhaled in the lung.Inquired into the new way of harmful components in the nano material reduction cigarette smoke, not only can be to reduce the smoking healthhazard.And the polymer fiber silk of the subsidiary CNT of preparation can also be made into filter cloth, is used for medical mask and other and the relevant Application Areas of removal harmful substance.
The specific embodiment
The invention provides a kind of polymer fiber of carbon nanotubes structure.Be used for cigarette filter, the polymer fiber of described carbon nanotubes structure is made of CNT and polymer fiber, CNT one end adheres to or inserts in the polymer fiber, outside the other end is free in, forms the composite polymer fibers of the carbon nanotubes of " caterpillar " shape.Its manufacture craft is as follows:
1) taking by weighing CNT, polymer fiber (polypropylene fibre or acetate fiber) and adhesive glyceryl triacetate mixes, wherein, glyceryl triacetate is formed composite caking agent with the CNT that accounts for glyceryl triacetate quality 20%～50%, the quality of composite caking agent accounts for the 10%-60% of polymer fiber, disperse with supersonic oscillations, composite caking agent is joined in the polymer fiber;
2) adopt " PlaTntex-SPA " spinnerets short distance spinning equipment to carry out spinning.Spinning process is as follows: the polymer fiber that composite caking agent is arranged that step 1) is obtained carries out melt spinning, its process is the (glycerine that oils together, the mass ratio that accounts for polymer fiber is 0.1%), drawing-off, two roads oil that (glycerine, the mass ratio that accounts for polymer fiber is 0.1%) curls, HEAT SETTING, pendulum wire and be packaged into the polymer fiber of carbon nanotubes structure.
Spinning condition: 240～250 ℃ of temperature, winding speed 400m/min
Stretch and typing: 75 ℃ of draft temperatures, draw ratio 6,130 ℃ of setting temperatures, shaping time 25 minutes.Make in adhesion of CNT one end or the insertion polymer fiber, outside the other end is free in, form the composite polymer fibers of the carbon nanotubes of " caterpillar " shape.
Form the polymer filament principle of the carbon nanotubes of above-mentioned pattern in blending: the polymer filament diameter that being used to of being spinned prepares cigarette filter is little, has only a few μ m.The draw ratio of CNT very big (this is a CNT with respect to one of unique features of other nano material) can reach more than several thousand, the CNT of diameter 30-40nm, and length can reach μ m.The length of CNT can form CNT " half inserts " filament surface near the diameter of polymer fiber silk in spinning process, make the composite fibre silk of carbon nanotubes present " caterpillar " pattern.But need the content of controlling carbon nanotube can not be too low, otherwise may be buried fully in the polymer fiber silk by most of CNT.And the content of CNT is excessive, then influences spinning.Also must take into account the amount that cost and benefit are controlled the CNT of adding.In the filter tip forming process, the better ratio that the quality of above-mentioned CNT accounts for glyceryl triacetate is 30%; By " the better ratio that the quality of the composite caking agent that CNT and glyceryl triacetate form accounts for polymer fiber silk (filter tow) is 15%.
Through selecting instrument for use: FiltronaCOA200 20 duct smoking machines, HP5890 gas chromatograph, HP6890 band automatic sampler gas chromatograph, HP3393A data processor, HP5890 gas-chromatography and 5988 GC-MS, make respectively and be used for testing, relatively, can guarantee reliability of testing result.Adopt ISO4387, the degree of harmful substance in the filter-tip filtering cigarette of ISO10315 standard testing.And through scanning electron microscopic observation, polymer filament (diameter is less than the 3 μ m) surface of spinning is inserted by fibrous CNT (diameter is 30-40nm), the state of CNT presents part end and inserts the polymer filament surface, remainder presents free state, and the polymer filament of being inserted by CNT is rendered as " caterpillar " apperance.The tow that tow like this combines and forms is made filter tip, and inside has the nano level filtration duct that is formed by CNT.
Through detecting, make the rejection rate of materials such as tar in the cigarette, BaP, phenols, pyridine radicals acrolein, benzanthracene be significantly higher than the not filter tip of the polymer fiber silk preparation of carbon nanotubes through the filter tip of the polymer fiber silk preparation of carbon nano-tube modification.The polymer fiber silk through the special construction of carbon nano-tube modification of this research combines with CNT firmly, CNT " half inserts " filament surface, or partly sticked at filament surface (part is free) by adhesive.Therefore can not overflow or be inhaled in the lung, with respect to CNT or other nano material directly are mixed in the filter tip, safer.
Claims (3)
1. the polymer fiber manufacture craft of a carbon nanotubes structure, it is characterized in that: described manufacture craft is as follows:
1) takes by weighing the CNT and the adhesive glyceryl triacetate that account for glyceryl triacetate quality 20%～50% earlier and mix the composition composite caking agent; The composite caking agent that will account for the 10%-60% of polymer fiber quality again joins in the polymer fiber, disperses with supersonic oscillations, and composite caking agent is joined in the polymer fiber;
2) adopt " PlaTntex-SPA " spinnerets short distance spinning equipment to carry out spinning, spinning process is as follows: the polymer fiber that composite caking agent is arranged that step 1) is obtained carries out melt spinning, its process be oil together, drawing-off, two roads oil, curl, HEAT SETTING, pendulum wire and be packaged into the polymer fiber of carbon nanotubes structure;
Spinning condition: 240～250 ℃ of temperature, winding speed 400m/min;
Stretch and typing: 75 ℃ of draft temperatures, draw ratio 6,130 ℃ of setting temperatures, shaping time 25 minutes, make in adhesion of CNT one end or the insertion polymer fiber, outside the other end is free in, form the composite polymer fibers of the carbon nanotubes of " caterpillar " shape.
2. according to the polymer fiber manufacture craft of the described carbon nanotubes structure of claim 1, it is characterized in that: described polymer fiber is polypropylene fibre or acetate fiber.
3. according to the polymer fiber manufacture craft of claim 1 carbon nanotubes structure, it is characterized in that: the described He Erdao that oils together oil on oil be glycerine, the mass ratio that accounts for polymer fiber is 0.1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100555260A CN1298898C (en) | 2004-08-05 | 2005-03-16 | Polyfiber containing structure of nano carbon tubes |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410070172 CN1587455A (en) | 2004-08-05 | 2004-08-05 | Polymer fiber containing carbon nano tube structure |
| CN200410070172.2 | 2004-08-05 | ||
| CNB2005100555260A CN1298898C (en) | 2004-08-05 | 2005-03-16 | Polyfiber containing structure of nano carbon tubes |
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| Publication Number | Publication Date |
|---|---|
| CN1661140A CN1661140A (en) | 2005-08-31 |
| CN1298898C true CN1298898C (en) | 2007-02-07 |
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| CNB2005100555260A Expired - Fee Related CN1298898C (en) | 2004-08-05 | 2005-03-16 | Polyfiber containing structure of nano carbon tubes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105088376B (en) * | 2015-08-04 | 2017-11-17 | 浙江中烟工业有限责任公司 | High compound tow of interfacial-adhesion strength nanofiber and its preparation method and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1431342A (en) * | 2003-01-28 | 2003-07-23 | 东华大学 | Super high molecular mass polythylene/carbon nano tube composite fiber used in jelly glue spinning and its preparation |
| WO2004025003A2 (en) * | 2002-09-12 | 2004-03-25 | Snecma Propulsion Solide | Structure fibreuse tridimensionnelle en fibres refractaires, procede pour sa realisation et application aux materiaux composites thermostructuraux. |
| CN1551934A (en) * | 2001-10-12 | 2004-12-01 | �����֯��ʽ���� | Polybenzazole fiber |
| CN1563526A (en) * | 2004-04-16 | 2005-01-12 | 清华大学 | Conducting fiber containing nano car bon tube and its prepn. method |
-
2005
- 2005-03-16 CN CNB2005100555260A patent/CN1298898C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1551934A (en) * | 2001-10-12 | 2004-12-01 | �����֯��ʽ���� | Polybenzazole fiber |
| WO2004025003A2 (en) * | 2002-09-12 | 2004-03-25 | Snecma Propulsion Solide | Structure fibreuse tridimensionnelle en fibres refractaires, procede pour sa realisation et application aux materiaux composites thermostructuraux. |
| CN1431342A (en) * | 2003-01-28 | 2003-07-23 | 东华大学 | Super high molecular mass polythylene/carbon nano tube composite fiber used in jelly glue spinning and its preparation |
| CN1563526A (en) * | 2004-04-16 | 2005-01-12 | 清华大学 | Conducting fiber containing nano car bon tube and its prepn. method |
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