A kind of flat section cellulose diacetate fiber and preparation method thereof
A technology of cellulose diacetate and cross section, which is applied in the directions of fiber processing, filament/thread forming, textile and paper making, etc., can solve the problems such as unseen cellulose diacetate fiber, complicated spinneret manufacturing process and increased production cost, etc. , to achieve the effect of easy control of process conditions, low cost and high filtration efficiency
Active Publication Date: 2020-08-04
NANTONG TEXTILE & SILK IND TECH RES INST +1
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- Description
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Problems solved by technology
[0005] From the method for preparing flat fiber involved in the prior art, it can be seen that there are following deficiencies: one is that the process flow is very complicated, and most of the methods for preparing flat fiber have adopted special-shaped spinneret holes, spinneret The manufacturing process is complicated, which increases the production cost; in addition, the linear density of the prepared fibers is above 1dtex (equivalent diameter is about 10μm), which is relatively thick
So far, there are no reports on cellulose diacetate fibers with flat cross-sections
Method used
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Embodiment 1
[0021] The present embodiment provides a kind of cellulose diacetate fiber film with flat section, and its preparation method is as follows:
[0022] (1) The composition of the spinning solution: the mass concentration of cellulose diacetate (relative average molecular weight: 40,000) is 8%, the mass of polyethylene oxide is 5% (relative to the mass of cellulose diacetate), the mass concentration of acetone, water and ethanol The total mass concentration is 92%, and the volume ratio of acetone, water and ethanol is 5:1:1.
[0023] (2) Spinning process: Under the control of the flow pump, the cellulose diacetate solution is extruded from the circular metal needle of the 10ml syringe at a speed of 3ml / h, and is accelerated to move forward under the action of an electric field force of 15kv, and enters the relative The atmospheric environment with a humidity of 25% and a temperature of 22°C finally falls on a metal receiving device with an aluminum foil at a distance of 15 cm fro...
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Abstract
The invention discloses flat-section cellulose diacetate fiber and a preparation method thereof. The preparation method includes that cellulose diacetate fiber powder and polyoxyethylene are dissolvedinto a mixed solvent of acetone, water and alcohol to prepare a spinning solution; an electrostatic spinning process is adopted, drops of the cellulose diacetate spinning solution fall apart into tiny drops under action of electrostatic high-voltage electric field force, and the tiny drops are drawn to be micron-scale fiber with flat section to form a fiber film on a receiver. Compared with the prior art for preparing flat fiber, the preparation method has the advantages of being simple in operation and easy-to-control in condition. The film composed of flat-section cellulose diacetate fiberhas the advantages of large specific surface area, high dust containing capacity, high hydroscopicity and excellent adsorption performance and has good application prospect in the field of tissue scaffolds and filtering materials.
Description
technical field [0001] The invention relates to a cellulose diacetate fiber, in particular to a cellulose diacetate fiber with a flat cross section and a preparation method thereof. Background technique [0002] With the improvement of modern living standards, consumers have higher and higher requirements for the performance of the products they use, and their awareness of environmental protection has become stronger and stronger. The development of green and environmentally friendly products has become an inevitable trend in the development of modern society. Cellulose diacetate is a cellulose derivative, which can be naturally degraded and has good biocompatibility. Products made of cellulose diacetate have excellent gloss, good hydrophilicity and air permeability, and long-term contact with the human body will not cause allergic reactions and electrostatic adsorption. Therefore, cellulose diacetate products have excellent application prospects. [0003] Using electrospi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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IPC IPC(8): D01D5/00D01D5/253D04H1/728
CPCD01D5/0038D01D5/253D04H1/728D10B2201/28
Inventor 杨旭红李冰艳
Owner NANTONG TEXTILE & SILK IND TECH RES INST