CN104878466A - Process of high-energy electron beam modified cellulose acetate fibers - Google Patents
Process of high-energy electron beam modified cellulose acetate fibers Download PDFInfo
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- CN104878466A CN104878466A CN201510328476.2A CN201510328476A CN104878466A CN 104878466 A CN104878466 A CN 104878466A CN 201510328476 A CN201510328476 A CN 201510328476A CN 104878466 A CN104878466 A CN 104878466A
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Abstract
The invention discloses a process of high-energy electron beam modified cellulose acetate fibers. The process comprises the steps of 1) preparing a cellulose acetate slurry by dissolving cellulose acetate flakes into acetone, filtering and applying additives, 2) ejecting the slurry out of a spinneret hole, evaporating acetone by use of hot air in a channel and solidifying the cellulose acetate slurry, 3) putting the formed cellulose acetate fibers through the irradiation unit of a high-energy electron accelerator, and controlling the irradiation dosage and enabling the decomposition product in the irradiation unit to go into a recycling unit via a circulating system, and 4) putting the irradiated fibers through a water tank and then feeding into a subsequent curling process unit, and finally producing the finished product fiber bale by virtue of drying, swaying, baling, packaging and the like. The process of the high-energy electron beam modified cellulose acetate fibers is simple and controllable in process, and efficient and energy-saving, and convenient for industrial production; meanwhile, the acetic acid component decomposed by virtue of irradiation can be recycled, and therefore, the cost loss and the influence on the environment can be reduced.
Description
Technical field
The present invention relates to the technical field of modification of cellulose acetate, particularly relate to a kind of technique of high energy electron beam modifying cellulose acetate fibre.
Background technology
Cellulose acetate, is mainly cellulose diacetate or Triafol T at present.Because cellulose acetate has many premium properties, as absorption, weather-proof, shock-resistant, oil resistant, low electrostatic etc., be therefore widely applied in many-sides such as cigarette filtering material, coating, grog, weavings.Wherein cellulose diacetate is better to the adsorption filtration effect of flue gas, is the main material of current filter stick for cigarettes processing.The preparation of cellulose acetate fibre, is shaped mainly through natural wood pulp preliminary treatment and acetic anhydride esterification, hydrolysis, vinegar sheet, spinning and the technological process such as curling.In order to improve the Adsorption Filtration Properties of cellulose acetate to flue gas, Dichlorodiphenyl Acetate cellulosic modification work has large quantity research.But due to the chemical physical stability of cellulose acetate itself higher, the simultaneously restriction of cellulose acetate fibre technology for making tobacco threds and modification cost, the effect of current modification cellulose acetate is remarkable, the commercial conversion of unrealized modification cellulose acetate.
Electron beam is a kind of radiation chemistry technology efficiently, by electron-beam excitation irradiation molecule, and initiating activity center, thus there is series of chemical.Conventional high-power electron beam generating means is cobalt source or high power electronic accelerator.
Summary of the invention
It is simply controlled that the technical problem to be solved in the present invention is to provide a kind of process, and efficiently, be energy-conservationly convenient to suitability for industrialized production; Simultaneously the acetic acid composition that decomposites of irradiation can recycling, decreases the technique of the high energy electron beam modifying cellulose acetate fibre of cost loss and ambient influnence.
For solving the problem, the present invention adopts following technical scheme:
A technique for high energy electron beam modifying cellulose acetate fibre, comprises the following steps:
1) select cellulose acetate sheet after acetone solution, filtration and applying additive, prepare cellulose acetate slurries;
2), after being sprayed from spinning nozzle by slurries, path is entered; By the hot-air evaporation acetone in path, and make the grout curing shaping of cellulose acetate under certain stretching;
3) under nitrogen/air atmosphere, the cellulose acetate fibre after being shaped is passed through high-energy electron accelerator radiation unit, and controls irradiation dose, make catabolite in radiation unit enter recycling unit by the circulatory system;
4) make the fiber after irradiation after tank, enter follow-up technology unit, then through techniques such as super-dry, pendulum wire, packing, packagings, final production goes out finished fiber bag.
The invention has the beneficial effects as follows: the present invention utilizes high power electronic accelerator and throwing units in series, acetate fibres after utilizing high-power electron beam direct irradiation spray silk to be shaped, under the condition not introducing other compositions, cause cellulose acetate fibre surface and the change of inner sequence of chemical, thus realize the online modification of cellulose acetate fibre, the method is by existing cellulose acetate technology for making tobacco threds, and series connection high-power electron beam modification unit, realizes explained hereafter.
Detailed description of the invention
Embodiment 1
A technique for high energy electron beam modifying cellulose triacetate fiber, comprises the following steps:
1) prepare Triafol T slurries, slurries are containing 30% (weight) Triafol T, and 0 to a small amount of TiO2, and solvent is acetone; Abundant dispersion rear slurry enters spinning nozzle after filtering, and spinning nozzle diameter is less than 54mm; 2) slurries enter path after spray silk, and be spun into fiber under high temperature, stretch under fibre stress, draw ratio is 1.0-1.7;
3) under nitrogen/air atmosphere, the cellulose triacetate fiber after shaping is by high-energy electron accelerator radiation unit, and controlling certain irradiation dose is 100-150KGy; Circulating nitrogen gas/air brings catabolite into recovery unit;
4) fiber after irradiation, through tank, is to flowing water (flow velocity: linear velocity 0.1 meter per second) in tank;
5) fiber after water rinse enters technology unit, then through techniques such as super-dry, pendulum wire, packing, packagings, final production goes out finished fiber bag.
Embodiment 2
A technique for high energy electron beam modifying cellulose diacetate, comprises the following steps:
1) prepare cellulose diacetate slurries, slurries are containing 25-30% (weight) cellulose diacetate, and 0 to a small amount of TiO2, and solvent is acetone; Abundant dispersion rear slurry enters spinning nozzle after filtering, and spinning nozzle diameter is less than 54mm;
2) slurries enter path after spray silk, and be spun into fiber under high temperature, stretch under fibre stress, draw ratio is 1.2-1.5;
3) under nitrogen/air atmosphere, the cellulose diacetate fibers after shaping is by high-energy electron accelerator radiation unit, and controlling certain irradiation dose is 50-100KGy; Circulating nitrogen gas/air brings catabolite into recovery unit;
4) fiber after irradiation, through tank, is Static Water in tank;
5) fiber after water rinse enters technology unit, then through techniques such as super-dry, pendulum wire, packing, packagings, final production goes out modification cellulose diacetate finished fiber bag.
The invention has the beneficial effects as follows: the present invention utilizes high power electronic accelerator and throwing units in series, acetate fibres after utilizing high-power electron beam direct irradiation spray silk to be shaped, under the condition not introducing other compositions, cause cellulose acetate fibre surface and the change of inner sequence of chemical, thus realize the online modification of cellulose acetate fibre, the method is by existing cellulose acetate technology for making tobacco threds, and series connection high-power electron beam modification unit, realizes explained hereafter.
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 (1)
1. a technique for high energy electron beam modifying cellulose acetate fibre, is characterized in that: comprise the following steps:
1) select cellulose acetate sheet after acetone solution, filtration and applying additive, prepare cellulose acetate slurries;
2), after being sprayed from spinning nozzle by slurries, path is entered; By the hot-air evaporation acetone in path, and make the grout curing shaping of cellulose acetate under certain stretching;
3) under nitrogen/air atmosphere, the cellulose acetate fibre after being shaped is passed through high-energy electron accelerator radiation unit, and controls irradiation dose, make catabolite in radiation unit enter recycling unit by the circulatory system;
4) make the fiber after irradiation after tank, enter follow-up technology unit, then through common process such as super-dry, pendulum wire, packing, packagings, produce finished fiber bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510328476.2A CN104878466A (en) | 2015-06-15 | 2015-06-15 | Process of high-energy electron beam modified cellulose acetate fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510328476.2A CN104878466A (en) | 2015-06-15 | 2015-06-15 | Process of high-energy electron beam modified cellulose acetate fibers |
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| CN104878466A true CN104878466A (en) | 2015-09-02 |
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| CN201510328476.2A Pending CN104878466A (en) | 2015-06-15 | 2015-06-15 | Process of high-energy electron beam modified cellulose acetate fibers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918467A (en) * | 2017-04-14 | 2017-07-04 | 长庆石油勘探局技术监测中心 | A kind of method for successively gathering iron-based material corrosion product |
-
2015
- 2015-06-15 CN CN201510328476.2A patent/CN104878466A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918467A (en) * | 2017-04-14 | 2017-07-04 | 长庆石油勘探局技术监测中心 | A kind of method for successively gathering iron-based material corrosion product |
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Application publication date: 20150902 |