CN105029695A - Method for modifying cellulose acetate filtering stick for cigarette by adopting high-power electron beams - Google Patents
Method for modifying cellulose acetate filtering stick for cigarette by adopting high-power electron beams Download PDFInfo
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- CN105029695A CN105029695A CN201510315414.8A CN201510315414A CN105029695A CN 105029695 A CN105029695 A CN 105029695A CN 201510315414 A CN201510315414 A CN 201510315414A CN 105029695 A CN105029695 A CN 105029695A
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Abstract
The invention discloses a method for modifying a cellulose acetate filtering stick for a cigarette by adopting high-power electron beams. The method is characterized by comprising the following steps: (1) carrying out transmission irradiation on the cellulose acetate filtering stick in a nitrogen gas or air atmosphere by using the high-power electron beams generated by a high-power electron accelerator or a cobalt source, and leaving the filtering stick to stand after irradiation is finished, wherein the irradiation dose is controlled to be within a range of 50-100 KGy; (2) placing the filtering stick subjected to irradiation modification obtained in the step (1) for 10h under vacuum negative pressure condition with temperature of 40-60 DEG C for removing macromolecules such as free acetic acid or neutralizing acidic components, and drying the filtering stick; and (3) balancing water content in the neutralized or separated filtering stick obtained in the step (2), and directly applying the filtering stick to the split rolling technology for preparing the cigarette.
Description
Technical field
The present invention relates to cellulose acetate filter stick technical field of modification, particularly relate to a kind of method adopting high energy electron beam modifying cigarette cellulose acetate filter stick.
Background technology
Current filter stick for cigarettes tow primary raw material is cellulose acetate.After cellulose acetate tow extrusion molding, boundling, then by loose, the process procedure such as triacetyl glycerine plasticising and forming paper parcel, prepare filter stick for cigarettes.Cellulose acetate filter stick for cigarettes have nontoxic, tasteless, resistance to suction is little, advantages of good adsorption effect, retain tarry matters in smoke efficiency advantages of higher.The effect of flue gas retained, adsorb for improving cellulose diacetate filter stick for cigarettes further, scientific worker has carried out a large amount of study on the modification (physical means comprises high-temperature steam, plasma etc., and chemical means is as large molecule grafting, surface enzyme, alkali treatment etc.) to cellulose acetate tow in filter stick for cigarettes.But because the chemical physical stability of cellulose acetate is higher, filter stick for cigarettes modified effect is not remarkable.The modification of current filter stick for cigarettes tow still also exists a more application difficult problem.
Electron beam is a kind of radiation chemistry technology efficiently, by electron-beam excitation irradiation molecule, and initiating activity center, thus there is a series of physical-chemical reaction.Electron beam technology does not need to introduce other reactive materials, and simultaneously electron excitation energy level is high, therefore its have efficiently, the advantage such as energy saving standard.Conventional high-power electron beam generating means is cobalt source or high power electronic accelerator, and its electron beam energy level is higher, has certain penetration capacity.Utilize the high-penetration performance of high-power electron beam, directly cause the de-esterification of surface of cellulose acetate and the degradation reaction of plasticizer in filter stick; Between cellulose acetate macromolecular main chain, produce activated centre simultaneously, large intermolecular cross-linking reaction occurs, thus reduce the crystallinity of cellulose acetate; Under heavy dose of irradiation, macromolecular main chain even ruptures.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of comfort that improve cigarette, and technique is simple, and high-efficiency environment friendly, has the method for the employing high energy electron beam modifying cigarette cellulose acetate filter stick of good production application prospect.
For solving the problem, the present invention adopts following technical scheme:
Adopt a method for high energy electron beam modifying cigarette cellulose acetate filter stick, comprise the following steps:
1) high-energy electron accelerator or cobalt source is used to produce high-power electron beam, in nitrogen or air atmosphere, transmission irradiation filter stick, irradiation dose controls at 50-100KGy, and irradiation terminates rear placement filter stick;
2) by step 1) filter stick after the radiation modification that obtains, 40-60 DEG C, place 10 hours under negative pressure of vacuum condition, remove the Small molecular such as free acetic acid or in and after acid ingredient, then dry filter stick;
3) by step 2) neutralization that obtains or the filter stick after being separated, after equilibrium water conten, directly apply to and cut cigarette technique, prepare cigarette.
Further, in step 1) in, described high-power electron beam occurring source is high-energy electron accelerator or cobalt source, and its electron beam possesses the energy level of transmission filter stick, and irradiation dose need control at 50-100KGy.
Further, in step 1) in, described filter stick is conventional cellulose acetate filter stick or the function filter stick containing cellulose acetate tow.
The invention has the beneficial effects as follows: utilize the high-power electron beam that cobalt source radioactive source or high-energy electron accelerator produce, under the condition not introducing other compositions, direct irradiation filter stick, cause cellulose acetate tow surface and the change of inner sequence of chemical, control irradiation dose thus realize the functional modification of filter stick for cigarettes, under certain irradiation dose controls, modified filter stick water absorbing properties significantly increases, its outward appearance and physical property simultaneously, meet follow-up filter stick and cut cigarette technological requirement, improve the comfort of cigarette, and in this modifying process, operating procedure is simple, high-efficiency environment friendly, there is good production application prospect.
Accompanying drawing explanation
Accompanying drawing 1 be in the embodiment of the present invention 2 filter stick weight with the change schematic diagram of high energy electron beams dosage.
Detailed description of the invention
Embodiment 1
Utilize the concrete steps of high-energy electron accelerator Dichlorodiphenyl Acetate fibre bundle filter stick modification as follows:
With filter rod forming manufacturing technique requirent, prepare acetate silk filter stick (100/120mm), place 2 hours after being shaped.
Under nitrogen atmosphere, cellulose acetate tow filter stick filter stick filter stick is positioned on high-power electron beam driven pedrail.By crawler haulage, make filter stick at the uniform velocity by electron accelerator irradiation region.Control irradiation dose is 50-100KGy, and Dichlorodiphenyl Acetate fibre bundle filter stick is by excellent irradiation.Place 4 hours after irradiation.
After irradiation, filter stick to be immersed in 5% sodium carbonate liquor after 2-3 hour vacuum drying again; Or directly 40-60 DEG C, place 10 hours under negative pressure of vacuum condition.
Under normal temperature constant humidity condition after balance, modified filter stick is applied to cuts in cigarette technique, prepares cigarette.
Embodiment 2
Utilize the concrete steps of cobalt source high-power electron beam emission source Dichlorodiphenyl Acetate cellulose filter stick modification as follows:
With filter rod forming manufacturing technique requirent, prepare cellulose acetate filter stick (100/120mm), place 2 hours after being shaped.
Under nitrogen or air atmosphere, be positioned over by filter stick in cobalt-60 radiosterilize sector, irradiation dose controls at 50-100KGy, takes out filter stick and places 4 hours.
The cellulose acetate filter stick vacuum drying that to be immersed in 5% sodium carbonate liquor 2-3 hour again after irradiation; Or directly 40-60 DEG C, place 10 hours under negative pressure of vacuum condition.
Under normal temperature constant humidity condition after balance, be applied to and cut in wraparound technique, prepare cigarette.
In order to prove the superiority of preparation method of the present invention, inventor is to same specification cellulose acetate filter stick, and the single Zhi Kechong change under different cobalt sources irradiation dose condition detects.Modification filter stick 25 DEG C, balance was weighed after 24 hours under relative humidity 60% environment.The results are shown in following table and Fig. 1.
Along with irradiation dose increases, after filter stick balance, individual cigarette weight first increases rear minimizing.This may be polarity after cellulose acetate tow surface degreasing, and adsorb the moisture in environment thus water content increase, therefore filter stick list Zhi Kechong is along with increase.But along with the lasting increasing of irradiation dose, cause cellulosic backbone to rupture and fine structure destruction, tow water absorbing properties declines.The scale of hardness of filter stick reveals same variation tendency.
Show by the cigarette quality impact of cigarette sensory evaluating smoking standard comparing modification filter stick: the modified filter stick of appropriate irradiation dose contrasts unmodified filter stick, more effective lifting cigarette moisture feeling and comfortableness, but excitant has increased slightly, other indexs such as perfume quantity and texture remain unchanged.
The invention has the beneficial effects as follows: the high-power electron beam produced with cobalt source radioactive source or high-energy electron accelerator, under the condition not introducing other compositions, direct irradiation filter stick, cause cellulose acetate tow surface and the change of inner sequence of chemical, control irradiation dose thus realize the functional modification of filter stick for cigarettes, under certain irradiation dose controls, modified filter stick water absorbing properties significantly increases, its outward appearance and physical property simultaneously, meet follow-up filter stick and cut cigarette technological requirement, improve the comfort of cigarette, and in this modifying process, operating procedure is simple, high-efficiency environment friendly, there is good production application prospect.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed in protection scope of the present invention.
Claims (3)
1. adopt a method for high energy electron beam modifying cigarette cellulose acetate filter stick, it is characterized in that: comprise the following steps:
1) high-energy electron accelerator or cobalt source is used to produce high-power electron beam, in nitrogen or air atmosphere, transmission irradiation filter stick, irradiation dose controls at 50-100KGy, and irradiation terminates rear placement filter stick;
2) by step 1) filter stick after the radiation modification that obtains, 40-60 DEG C, place 10 hours under negative pressure of vacuum condition, remove the Small molecular such as free acetic acid or in and after acid ingredient, then dry filter stick;
3) by step 2) neutralization that obtains or the filter stick after being separated, after equilibrium water conten, directly apply to and cut cigarette technique, prepare cigarette.
2. modification filter stick for cigarettes method as claimed in claim 1, it is characterized in that: in step 1) in, described high-power electron beam occurring source is high-energy electron accelerator or cobalt source, and its electron beam possesses the energy level of transmission filter stick, and irradiation dose need control at 50-100KGy.
3. modification filter stick for cigarettes method according to claim 1, is characterized in that: in step 1) in, described filter stick is conventional cellulose acetate filter stick or the function filter stick containing cellulose acetate tow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510315414.8A CN105029695B (en) | 2015-06-10 | 2015-06-10 | A method of using high energy electron beam modifying cigarette cellulose acetate filter stick |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510315414.8A CN105029695B (en) | 2015-06-10 | 2015-06-10 | A method of using high energy electron beam modifying cigarette cellulose acetate filter stick |
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| CN105029695A true CN105029695A (en) | 2015-11-11 |
| CN105029695B CN105029695B (en) | 2018-11-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109527654A (en) * | 2019-01-29 | 2019-03-29 | 安徽大学 | A kind of compound filter tip bar and preparation method thereof heating non-combustion-type tobacco product |
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| US4649941A (en) * | 1985-12-16 | 1987-03-17 | R. J. Reynolds Tobacco Company | Adjustable air dilution cigarette exhibiting controlled pressure drop |
| CN1292237A (en) * | 1999-10-09 | 2001-04-25 | 中国科学院化学研究所 | Polypropylene filter for cigarette and its preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109527654A (en) * | 2019-01-29 | 2019-03-29 | 安徽大学 | A kind of compound filter tip bar and preparation method thereof heating non-combustion-type tobacco product |
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| CN105029695B (en) | 2018-11-13 |
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