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Production method of spinning solution having memory function

A manufacturing method and technology for spinning dope, which are applied in spinning solution preparation, rayon manufacturing, textile and papermaking, etc., can solve problems such as unsatisfactory results and reduced production efficiency, and achieve good structural stability and smooth unwinding. , Good roll appearance forming effect

Inactive Publication Date: 2016-08-17
NANTONG SUZHONG TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Production method of spinning solution having memory function

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for manufacturing a spinning dope with a memory function, comprising the following steps:

[0032] 1) Preparation of fiber-forming polymer solution: mix raw materials polytetramethylene ether glycol and 4,4-diphenylmethane diisocyanate, react at 75°C for 50 minutes, and 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 make a mass percentage A prepolymer solution with a concentration of 40%; pentamethylenediamine is added to the prepolymer solution to extend the chain, and after the chain extension, the N,N-dimethylacetamide solution of the fiber-forming polymer is obtained, and the amines account for The mass ratio of fiber polymer is 1.0%, and the mass percentage concentration of solution is 33%;

[0033] 2) Preparation of memory function slurry: including the foll...

Embodiment 2

[0048] A method for manufacturing a spinning dope with a memory function, comprising the following steps:

[0049]1) Preparation of fiber-forming polymer solution: mix raw materials polytetramethylene ether glycol and 4,4-diphenylmethane diisocyanate, react at 90°C for 90 minutes, and 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 make a mass percentage A prepolymer solution with a concentration of 50%; pentamethylenediamine is added to the prepolymer solution to extend the chain, and after the chain extension, the N,N-dimethylacetamide solution of the fiber-forming polymer is obtained, and the amines account for The mass ratio of fiber polymer is 2.0%, and the mass percentage concentration of solution is 35%;

[0050] 2) Preparation of memory function slurry: including the follo...

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Abstract

The invention relates to a production method of a spinning solution having a memory function. The production method comprises the steps of 1, preparing a fiber-forming polymer solution; 2, preparing slurry with the memory function; 3, uniformly dispersing the fiber-forming polymer solution prepared in step 1 and the slurry with the memory function prepared in step 2 in stirring equipment, and storing the materials for 24-36 hours till the materials are cured completely, so that a shell spinning solution is obtained, wherein the shell spinning solution can be used for spinning shells. According to production method, the modified spinning solution is prepared, it can be guaranteed that after silk flocks are subjected to drafting and thermoforming, basically no residual stress exists, and the silk flocks are unwound smoothly; what is more important, a fiber product which is stable in structural performance, good in mechanical performance and low in fiber modulus and has the shape memory characteristic is obtained.

Description

technical field [0001] The invention relates to the field of manufacturing a polymer fiber, in particular to a method for manufacturing a spinning dope 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 sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/16D01F1/10D01D1/02D01D5/34C08G18/66C08G18/48C08G18/32C08G18/10
CPCC08G18/10C08G18/3228C08G18/4854C08G18/6685D01D1/02D01D5/34D01F1/10D01F8/16
Inventor 叶澄
Owner NANTONG SUZHONG TEXTILE
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