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Method for preparing polyacrylonitrile bamboo charcoal composite fiber by in-situ polymerization

A polyacrylonitrile and composite fiber technology, applied in the direction of fiber chemical characteristics, spinning solution preparation, single-component synthetic polymer rayon, etc., can solve problems such as uneven dispersion, and achieve excellent fiber processing performance and good bulkiness , The effect of reducing manufacturing costs

Inactive Publication Date: 2011-04-06
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of high polymer stock solution spinning method of bamboo charcoal polyacrylonitrile fiber, solve the problem of dispersion inhomogeneity of bamboo charcoal in high polymer matrix by in-situ polymerization, provide a kind of raw material that is easy to get, and can Utilize conventional polyacrylonitrile fiber industrial spinning method, adopt wet method or dry spinning to prepare the method for novel bamboo charcoal polyacrylonitrile composite fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Measure and weigh 234.4 Kg of acrylonitrile, 17.8 Kg of methyl acrylate, 2.6 Kg of ammonium itaconate, add 740.0 Kg of solvent dimethylformamide, 5.2 Kg of nano-modified bamboo charcoal powder, and initiator azobisisobutyronitrile 2.1 Kg, at 55~70 o Reaction under the temperature condition of C, obtain spinning dope;

[0019] (2) Insulate the spinning solution in step (1) for 70 o C. Filtration, wet spinning with negative 20% spinneret draw ratio, entering dimethylformamide and deionized water mass ratio 35 / 65, coagulation bath temperature is 30 o C, prepare bamboo charcoal polyacrylonitrile composite fiber as-spun silk with certain mechanical properties;

[0020] (3) The bamboo charcoal polyacrylonitrile composite fiber as-spun yarn in the step (2) is warped 50 times o C washing, 1.2 times drafting, 70 o C washing, 1.1 times drafting, 98 o C washing, boiling water drawing 8 times, steam drawing 1.6 times, oiling, drying, winding and winding, the winding speed...

Embodiment 2

[0022] (1) Measure and weigh 234.4 Kg of acrylonitrile, 17.8 Kg of methyl acrylate, 2.6 Kg of ammonium itaconate, add 740.0 Kg of solvent dimethyl sulfoxide, 5.2 Kg of nano-modified bamboo charcoal powder, and initiator azobisisobutyronitrile 2.1 Kg, at 55~70 o Reaction under the temperature condition of C, obtain spinning dope;

[0023] (2) Insulate the spinning solution in step (1) for 70 o C. Filtration, wet spinning with negative 20% spinneret draw ratio, entering dimethyl sulfoxide and deionized water mass ratio 35 / 65, coagulation bath temperature is 30 o C, prepare bamboo charcoal polyacrylonitrile composite fiber as-spun silk with certain mechanical properties;

[0024] (3) The bamboo charcoal polyacrylonitrile composite fiber as-spun yarn in the step (2) is warped 50 times o C washing, 1.2 times drafting, 70 o C washing, 1.1 times drafting, 98 o C washing, boiling water drawing 8 times, steam drawing 1.6 times, oiling, drying, winding and winding, the winding spe...

Embodiment 3

[0026] (1) Measure and weigh 270.5 Kg of acrylonitrile, 20.6 Kg of methyl acrylate, 2.9 Kg of ammonium itaconate, add 700.0 Kg of solvent dimethylformamide, 6.0 Kg of nano-modified bamboo charcoal powder, and initiator azobisisobutyronitrile 2.3 Kg, at 55~70 o Reaction under the temperature condition of C, obtain spinning dope;

[0027] (2) Insulate the spinning solution in step (1) for 70 o C. Filtration, wet spinning with negative 10% spinneret draft ratio, entering dimethylformamide and deionized water mass ratio 35 / 65, coagulation bath temperature is 40 o C, prepare bamboo charcoal polyacrylonitrile composite fiber as-spun silk with certain mechanical properties;

[0028] (3) The bamboo charcoal polyacrylonitrile composite fiber as-spun yarn in the step (2) is warped 50 times o C washing, 1.2 times drafting, 70 oC washing, 1.2 times drafting, 98 o C washing, boiling water drawing 6 times, steam drawing 1.9 times, oiling, drying, winding and winding, the winding speed...

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Abstract

The invention provides a method for preparing polyacrylonitrile bamboo charcoal composite fiber by in-situ polymerization, comprising the following steps of: (1) respectively adding polymeric monomer, initiator, solvent and bamboo charcoal modified nanometer micro powder in a polymerization kettle for continuous polymerization or batch polymerization so as to obtain polyacrylonitrile polymer and bamboo charcoal modified nanometer micro powder mixed spinning solution for spinning; (2) thermally insulating and filtering the spinning solution obtained in step (1), carrying out wet spinning or dry spinning to the solution by a spinneret assembly, and solidifying the solution coagulating bath formed by polymerizing solvent and water to obtain spun filament fiber; and (3) washing, drafting, drying, finishing, finalizing and winding the spun filament fiber obtained in step (2) to obtain bamboo charcoal polyacrylonitrile composite fiber filament which is cut according to requirement to obtain cotton-type or wool-type short fiber. The in-situ polymerization can ensure that the bamboo charcoal modified nanometer micro powder evenly disperses in a high polymer matrix, therefore, the continuous stability of the fiber preparation is improved; and the prepared novel bamboo charcoal polyacrylonitrile composite fiber has good bulkiness and daylight resistance, thus the application range of the bamboo charcoal fiber is enlarged.

Description

technical field [0001] The invention relates to the technical field of preparation of functional fibers, in particular to a method for preparing polyacrylonitrile bamboo charcoal composite fibers by in-situ polymerization. Background technique [0002] With the development of society and the advancement of science and technology, people have put forward higher requirements for fiber. Since the beginning of the 21st century, the output of chemical fibers has increased rapidly, market competition has intensified, and the economic benefits of conventional chemical fiber production have continued to decline. Internationally renowned chemical fiber manufacturers pay great attention to the research and development of functional fibers. Through the use of chemical modification, physical modification and molecular design, etc., some properties of chemical fibers are strengthened, and their added value is increased. Functional chemical fiber, that is, "differentiated fiber". The dy...

Claims

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Application Information

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IPC IPC(8): D01F6/54D01F1/10D01D1/02C08F220/44C08F2/44C08K9/02C08K3/04
Inventor 张旺玺王艳芝焦明立张瑞文
Owner ZHONGYUAN ENGINEERING COLLEGE
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