Flame-retardant acetate fiber tape and preparation method of acetate fiber

A technology of cellulose acetate and cellulose acetate cloth, which is applied in the direction of artificial filaments, adhesives, film/sheet-like adhesives made of cellulose derivatives, etc., can solve the problem of low spinning efficiency and plasticizer exudation. Or volatilization, poor mechanical properties and other problems, to achieve the effect of easy control of process parameter selection, good mechanical properties and fracture strength, and flexible process parameter selection

Inactive Publication Date: 2013-11-13
SUZHOU LONGJIE SPECIAL FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing cellulose acetate production uses acetone, which is highly volatile, as a solvent. Acetone has a boiling point of 56°C and a flash point of -20°C. It is easy to explode in the air, which brings certain dangers to acetate fiber production and is not beneficial to the environment; At the same time, it is difficult to dissolve cellulose acetate with acetone as a solvent to obtain a spinning solution with a high mass fraction of cellulose acetate (such as greater than 30%), and the production efficiency is low.
[0007] In order to reduce the adverse impact on the environment during the production process and improve the production efficiency of cellulose acetate, although the research on melt spinning after plasticizing and modifying cellulose acetate has been reported, the technology provided is not an effective plasticizing method. Modification technology, cannot be applied as acetate fiber melt spinning production technology
Japanese patents 5046921, 5442420, 62250215, 978339, 9291414, 10317228, 11506175 etc. add low-molecular plasticizers such as glycerin, polyethylene glycol, ε caprolactone derivatives to the cellulose acetate composition to make fibers, but the In the process of preparing fibers, there are problems such as exudation or volatilization of plasticizers, and the fiber fineness is relatively large, with a diameter of 200-300um, which i

Method used

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  • Flame-retardant acetate fiber tape and preparation method of acetate fiber

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Experimental program
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Example Embodiment

[0039] Example 1

[0040] (1) The cellulose acetate with a degree of substitution of 2.2, a degree of polymerization of 260 and a weight-average molecular weight of 181800 is crushed to 280 mesh, and after drying, it is combined with 1-butyl-3-methylimidazole tetrafluoroborate (BMIMBF4) in accordance with The mass fraction ratio is 2:1 for uniform mixing. The mixture is fed into a twin-screw blender for blending, extruding and slicing. The twin-screw blender uses the same-rotating screw for blending and extruding. The temperature of the feeding section, melting section, metering section and die head are 160℃~170. ℃, 170℃, 160~170℃, 160℃, the extruder rotation speed is 10~50 rpm. A colorless and transparent spinning raw material is obtained.

[0041] (2) Put the spinning material into a vacuum oven, and continuously vacuum dry at 60℃ for 70h;

[0042] (3) The spinning materials are measured and then melt-spinned, and the spinning temperature is 170°C. The spinneret hole of the spi...

Example Embodiment

[0044] Example 2

[0045] (1) Crush the cellulose acetate with a degree of substitution of 2.3, a degree of polymerization of 360 and a weight average molecular weight of 235000 to 250 mesh, and after drying, it is combined with 1-butyl-3-methylimidazole tetrafluoroborate (BMIMBF4) The mass fraction ratio is 2:1 for uniform mixing. The mixture is fed into a twin-screw blender for blending, extruding and slicing. The twin-screw blender uses co-rotating screws for blending and extruding. The temperature of the feeding section, melting section, metering section and die head are 170℃~180. ℃, 190℃, 160~170℃, 160℃, extruder speed is 50~120 rpm. A colorless and transparent spinning raw material is obtained.

[0046] (2) Put the spinning material into a vacuum oven, and continuously vacuum dry at 60℃ for 70h;

[0047] (3) The spinning materials are measured and then melt-spun at a spinning temperature of 190℃. The spinning speed is 1000m / min. The hot roll drafting ratio is 3 times, and ...

Example Embodiment

[0049] Example 3

[0050] (1) Crush the cellulose acetate with a degree of substitution of 2.6, a degree of polymerization of 1,000 and a weight average molecular weight of 400,000 to 300 mesh, and after drying, it is combined with 1-butyl-3-methylimidazole tetrafluoroborate (BMIMBF4) The mass fraction ratio is 7:1 uniformly mixed. The mixture is fed into a twin-screw blender for blending, extruding and slicing. The twin-screw blender uses the same-rotating screw for blending and extruding. The temperature of the feeding section, melting section, metering section and die head are respectively 230℃~240 ℃, 240℃, 230~240℃, 230℃. The rotation speed of the extruder is 10-30 rpm. A light yellow transparent spinning raw material was obtained.

[0051] (2) Put the spinning material into a vacuum oven and continuously vacuum dry at 120℃ for 30h;

[0052] (3) The spinning materials are measured and then melt-spinned, and the spinning temperature is 260°C. The spinning speed is 500m / min. ...

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Abstract

The invention belongs to the field of fiber preparation, relates to a flame-retardant acetate fiber tape and a preparation method of acetate fiber in the flame-retardant acetate fiber tape and particularly relates to a preparation method which comprises the steps of carrying out plasticizing modification on cellulose acetate by using ionic liquid serving as a plasticizer, and then, carrying out melt spinning so as to obtain the acetate fiber with high strength. The flame-retardant acetate fiber tape comprises acetate fiber cloth, a flame-retardant rubber type adhesive and an anti-sticking agent, wherein the adhesive is coated on one face of the acetate fiber cloth and the anti-sticking agent is coated on the other face of the acetate fiber cloth. The flame-retardant acetate fiber tape is characterized in that the acetate fiber is prepared by a method which comprises the steps of mixing of cellulose acetate, drying, melt spinning, winding and the like.

Description

technical field [0001] The invention belongs to the field of fiber preparation, and relates to a flame-retardant cellulose acetate tape and a method for preparing cellulose acetate therein, in particular to a method of plasticizing and modifying cellulose acetate with ionic liquid as a plasticizer, and then melt spinning Filament is prepared to obtain a method for the preparation of acetate fibers with higher strength. Background technique [0002] At present, it is widely used in plasma (PDP) and liquid crystal (LCD) TVs, wire insulation shielding and fixing of monitors, DY of color picture tubes (CRT) and monitors (CDT), insulation and fixing of deflection coils (DT), transformers (FBT) ) and the interlayer insulation of the motor, the wrapping shielding of the wiring harness and the fixed tape of various electronic components. Well, the adhesion is not strong, and it will warp after a while. [0003] Cellulose acetate is one of the most important varieties of cellulose ...

Claims

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Application Information

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IPC IPC(8): C09J7/04D01F2/28
Inventor 徐醒我关乐赵满才
Owner SUZHOU LONGJIE SPECIAL FIBER
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