A method of manufacturing fiber with memory function

A manufacturing method and functional technology, applied in the field of fiber manufacturing and polymer fiber manufacturing, can solve the problems of lower production efficiency and unsatisfactory results, etc., and achieve the effect of smooth unwinding, good structural stability, and soft hand feeling

Active Publication Date: 2018-01-19
浙江万舟控股集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, these methods may reduce production efficiency, or there are still large defects and deficiencies in the structure and performance of the finished fiber products, so the results are not ideal.

Method used

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  • A method of manufacturing fiber with memory function

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for manufacturing a fiber with a memory function, the method of manufacturing is carried out according to the following process:

[0037] The manufacture method of core spinning dope is:

[0038]1.1) Dry copper foam, dry it at 100°C for 4 hours, then place it in a stainless steel kettle, evacuate it to below 0.2 standard atmospheric pressure, and at a temperature of 95°C, inject docosane liquid into the stainless steel kettle to impregnate the foam copper, apply 0.1 The pressure of MPa, keeps 4 hours, makes modified copper foam;

[0039] 1.2) Preparation of fiber-forming polymer solution: mix the raw materials polytetramethylene ether glycol and 4,4-diphenylmethane diisocyanate, and react at 75°C for 50 minutes to prepare a prepolymer, in which 4,4-diphenyl The molar ratio of methyl methane diisocyanate to polytetramethylene ether glycol is (1.80~2.00): 1; after the prepolymerization is completed, N,N-dimethylacetamide solvent is added to the prepolymer to mak...

Embodiment 2

[0058] A method for manufacturing fibers with a memory function, the method of manufacturing is carried out according to the following processes:

[0059] The manufacture method of core spinning dope is:

[0060] 1.1) Dry the copper foam, dry it at 120°C for 6 hours, then place it in a stainless steel kettle, evacuate it to below 0.2 standard atmospheric pressure, and at a temperature of 98°C, inject docosane liquid into the stainless steel kettle to impregnate the foam copper, apply 0.2 The pressure of MPa, keeps 6 hours, makes modified copper foam;

[0061] 1.2) Preparation of fiber-forming polymer solution: mix raw materials polytetramethylene ether glycol and 4,4-diphenylmethane diisocyanate, and react at 90°C for 90 minutes to prepare a prepolymer, in which 4,4-diphenyl The molar ratio of methyl methane diisocyanate to polytetramethylene ether glycol is (1.80~2.00): 1; after the prepolymerization is completed, N,N-dimethylacetamide solvent is added to the prepolymer to m...

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Abstract

The invention relates to a method for manufacturing fibers with a memory function. The method includes the steps of core spinning solution manufacturing, shell spinning solution manufacturing and solution spinning. According to the method, by preparing spinning solutions modified by skin and cores respectively, it can be guaranteed that residual stress hardly exists in tows after drafting and heat setting, and the tows are unwound smoothly. More importantly, a fiber product which is stable in structural performance, good in fiber mechanical performance and lower in fiber modulus and has the shape memory characteristic is manufactured.

Description

technical field [0001] The invention relates to the field of manufacturing a polymer fiber, in particular to a method for manufacturing a fiber with a memory function. Background technique [0002] "Shape memory material" refers to a product with a certain original shape, which can automatically return to the original shape under specific external conditions (such as external stimuli such as heat, machinery, light, magnetism or electricity) after being deformed and fixed. class material. Shape memory fiber means that when the fiber is formed at one time, it can remember the initial shape and characteristics given by the outside world. This deformation is fixed under the force of external force. However, when the deformed fiber is given specific external stimulus conditions, the shape memory fiber can return to the original shape, that is to say, the final product has the characteristics of the original shape memory of the fiber, and the fabric made by using this shape memo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/16D01F1/10C08G18/66C08G18/48C08G18/32
CPCC08G18/3228C08G18/4854C08G18/6685D01F1/10D01F8/16
Inventor 徐建忠姚卫芬
Owner 浙江万舟控股集团有限公司
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