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Preparation method of permanent antistatic acrylonitrile-based copolymer and its fiber

An acrylonitrile-based, antistatic technology, used in the manufacture of conductive/antistatic filaments, chemical characteristics of fibers, single-component synthetic polymer rayon, etc., can solve the problems of high price, strong water absorption, and large addition ratio. , to achieve the effect of improving antistatic performance and reducing surface resistivity

Active Publication Date: 2019-02-01
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although ionic liquids have excellent electrical conductivity, there are two main problems in using ionic liquids as a single antistatic agent for the production and development of antistatic products: on the one hand, as an ionic antistatic agent, ionic liquids are affected by environmental temperature and humidity. More serious; on the other hand, most ionic liquids with excellent performance are expensive, and the large addition ratio leads to high production costs
However, this patent only blends polyethylene glycol and polyacrylonitrile, which also has the problem of antistatic agent migration and precipitation, and cannot achieve permanent antistatic performance.
The use of polyethylene glycol as an antistatic agent mainly has the following problems: when the added amount is low, the antistatic performance is poor; when the added amount is too high, the water absorption effect is strong, resulting in too high surface viscosity of the material, which affects subsequent processing and use

Method used

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  • Preparation method of permanent antistatic acrylonitrile-based copolymer and its fiber
  • Preparation method of permanent antistatic acrylonitrile-based copolymer and its fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of permanent antistatic acrylonitrile-based copolymer

[0030] Pour 1 L of dimethylformamide into the reaction kettle, then add 3.75 mol of acrylonitrile monomer, 0.3 mol of methyl acrylate, 0.45 mol of polyethylene glycol methacrylate 400, 0.5 mol of 1-allyl-3 -Butylimidazolium hexafluorophosphate and 0.1mol azobisisobutyronitrile were mixed evenly and then poured into the reaction kettle, heated to 65°C while stirring, reacted for 10 hours after the temperature was constant, and then poured the reaction solution into 5L distilled water Precipitation, standing still, suction filtration, and vacuum drying at 85°C to obtain an acrylonitrile-based copolymer with a melting point of 215°C;

[0031] (2) Preparation of permanent antistatic acrylonitrile-based copolymer fibers

[0032] After mixing 100 parts by mass of acrylonitrile-based copolymers, 0.2 parts by mass of dilauryl thiodipropionate, 0.3 parts by mass of zinc stearate, and 1 part by mass of cellu...

Embodiment 2

[0034] (1) Preparation of permanent antistatic acrylonitrile-based copolymer

[0035] Pour 0.5L dimethylformamide and 0.5L dimethyl sulfoxide into the reaction kettle, then add 3.5mol acrylonitrile monomer, 0.5mol methyl acrylate, 0.5mol polyethylene glycol monomethyl ether methacrylate 400, 0.5mol of 1-allyl-3-butylimidazolium chloride salt and 0.1mol of azobisisobutyronitrile were mixed evenly and then poured into the reaction kettle, heated to 60°C while stirring, and reacted for 10 hours after the temperature was constant , then pour the reaction solution into 7L distilled water for precipitation, let stand, filter with suction, and dry in vacuum at 80°C to obtain an acrylonitrile-based copolymer with a melting point of 188°C;

[0036] (2) Preparation of permanent antistatic acrylonitrile-based copolymer fibers

[0037] 100 parts by mass of acrylonitrile-based copolymers, 0.2 parts by mass of spiroethylene glycol bis[2,2'-methylenebis(4,6-di-tert-butylphenyl)] phosphite, ...

Embodiment 3

[0039] (1) Preparation of permanent antistatic acrylonitrile-based copolymer

[0040] Pour 1L of dimethylformamide into the reaction kettle, and then add 3.75mol of acrylonitrile monomer, 0.5mol of methyl acrylate, 0.25mol of polyethylene glycol acrylate 400, and 0.5mol of 1-allyl-3-butane Mix imidazole tetrafluoroborate and 0.1mol azobisisobutyronitrile evenly and pour it into the reaction kettle, heat up to 65°C while stirring, react for 10 hours after the temperature is constant, then pour the reaction solution into 5L distilled water for precipitation , stand still, filter with suction, and dry under vacuum at 85°C to obtain an acrylonitrile-based copolymer with a melting point of 202°C;

[0041] (2) Preparation of permanent antistatic acrylonitrile-based copolymer fibers

[0042] 100 parts by mass of acrylonitrile-based copolymers, 0.1 parts by mass of spiroethylene glycol bis[2,2'-methylenebis(4,6-di-tert-butylphenyl)] phosphite, 0.2 parts by mass Zinc stearate, 1.2 pa...

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Abstract

The invention discloses a preparation method of a permanent antistatic acrylonitrile-based copolymer and its fiber. The preparation principle of the permanent antistatic acrylonitrile-based copolymerfiber is characterized in that acrylonitrile is copolymerized with an ionic liquid containing an unsaturated double bond, a polyethylene glycol derivative containing an unsaturated double bond and other monomers to obtain the permanent antistatic acrylonitrile-based copolymer, and the copolymer is directly processed by using a spinning process to prepare the permanent antistatic acrylonitrile-based copolymer fiber. An antistatic agent used in the invention participates in the polymerization reaction, so the problem of migration of small molecules is solved, thereby the obtained acrylonitrile-based copolymer fiber has a permanent antistatic property.

Description

technical field [0001] The invention relates to the technical field of fiber preparation, in particular to a permanent antistatic acrylonitrile-based copolymer and a fiber preparation method thereof. Background technique [0002] The electrical properties of polymer materials mainly depend on two physical quantities, namely resistivity and dielectric constant. The lower the resistivity of the material, the stronger the ability to dissipate static electricity. The lower the dielectric constant, the easier it is to generate static electricity. However, most polymer materials have high surface resistivity (>10 12 Ω) and low dielectric constant, therefore, this type of material does not have antistatic properties, resulting in various problems and difficulties due to the accumulation of static electricity in practical applications. Random failures, malfunctions or operating errors may also cause breakdown and destruction of certain components (MOS circuits, bipolar circuits,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/54D01F1/09C08F283/06C08F220/14C08F220/44C08F230/06C08F226/04C08F226/06C08F220/06
CPCC08F283/065D01F1/09D01F6/54C08F230/06
Inventor 王宁李恒韩姗高亚雪陈洋周逢宇
Owner TIANJIN POLYTECHNIC UNIV
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