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Graphene/polymer multi-orientation filling modified chemical fiber and preparation method thereof

A graphene and polymer technology, applied in the field of fiber modification, can solve the problems of difficulty in obtaining fiber materials, inability to take into account fiber strength and toughness, and difficulty in achieving extensive control, etc., and achieve the effect of strong controllability and wide application range

Active Publication Date: 2020-12-01
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above studies have improved the mechanical properties of the fiber through blending modification, but a certain compatibilizer (such as maleic anhydride) needs to be introduced in the preparation process to increase the compatibility of the blend system, and the compatibilizer can only be used It is difficult to synthesize compatibilizers under specific composition conditions and under partial blending conditions, so it is difficult to achieve the purpose of extensive regulation
At the same time, due to the inability to balance the strength and toughness of fibers, these limitations have led to difficulties in obtaining ideal fiber materials.

Method used

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  • Graphene/polymer multi-orientation filling modified chemical fiber and preparation method thereof
  • Graphene/polymer multi-orientation filling modified chemical fiber and preparation method thereof
  • Graphene/polymer multi-orientation filling modified chemical fiber and preparation method thereof

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preparation example Construction

[0033] The invention provides a kind of preparation method of graphene / polymer multi-orientation filled modified chemical fiber, comprising the following steps:

[0034]Mixing graphene, propylene monomer, acrylate monomer, comonomer, macromolecular crosslinking agent and initiator to obtain a mixed solution;

[0035] Mixing the mixed liquid and the aqueous phase dispersion system, performing homogenization treatment, to obtain a suspension;

[0036] The suspension is subjected to in-situ suspension polymerization to obtain graphene / polymer microspheres;

[0037] The graphene / polymer microsphere and the chemical fiber matrix are placed in a twin-screw extruder for melt blending, and after drawing, the graphene / polymer multi-oriented filled modified chemical fiber is obtained.

[0038] In the present invention, unless otherwise specified, the preparation materials used are commercially available products well known to those skilled in the art.

[0039] The invention mixes grap...

Embodiment 1

[0064] according to figure 2 The preparation flowchart shown in the preparation of graphene orientation filled modified chemical fiber, 0.1g graphene, 10g methyl methacrylate (MMA), 40g butyl acrylate (BA), 50g styrene (St), 0.2g polyethylene Glycol dimethacrylate (PEGDMA-750), 0.2g polyethylene glycol diacrylate (PEGDA-200), 2g benzoyl peroxide (BPO) and 1g azobisisobutyronitrile (AIBN) were mixed, Disperse for 2h under 100W ultrasonic conditions to obtain a mixed solution; mix the mixed solution with an aqueous phase dispersion system (6.85g magnesium hydroxide, 0.25gNaNO 2 and 50gNaCl uniformly dispersed in 500g deionized water), and high-speed shearing (stirring speed is 10000rpm, time is 5min) to obtain a suspension; the suspension is polymerized in high-purity nitrogen, first at 2°C / min The heating rate was raised to 50°C, and the reaction was carried out for 6 hours, and then the temperature was raised to 70°C at a heating rate of 5°C / min, and the reaction was carried...

Embodiment 2

[0067] It is basically the same as Example 1, except that the masses of MMA, BA and St are respectively 40g, 20g and 40g.

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Abstract

The invention provides a graphene / polymer multi-orientation filling modified chemical fiber and a preparation method thereof, and relates to the technical field of fiber modification. According to thepreparation method, graphene is coated by adopting in-situ suspension polymerization, so that the dispersion effect of the graphene is greatly improved; the compatibility between the graphene and thepolymer microspheres is improved by utilizing a comonomer, so that relatively strong interaction is formed between the graphene and the PA microspheres; the low-melting-point and high-toughness graphene / polymer microsphere oriented filling modified chemical fiber is adopted, the strength and toughness of the chemical fiber can be improved at the same time, and the electric and heat conduction performance of a chemical fiber product is expected to be improved; oriented graphene / polymer microspheres can form a microfiber structure with a high length-diameter ratio in a single fiber, and the structure can inhibit the formation of cracks in the radial direction (the main fracture direction of the fiber) on one hand, and can induce the high orientation and crystallization of polymer moleculesin a chemical fiber matrix on the other hand, so that the strength of a fiber material is improved.

Description

technical field [0001] The invention relates to the technical field of fiber modification, in particular to a graphene / polymer multi-orientation filled modified chemical fiber and a preparation method thereof. Background technique [0002] With the continuous development of the fiber processing industry, the output and product types of various synthetic chemical fibers are increasing, and the tentacles of products in the field of textile fibers are constantly expanding, making various fiber products gradually affect national life. The modification of fiber materials mainly includes chemical modification and physical modification. Chemical modification mainly adjusts the water absorption, crystallinity, crystallization speed and glass transition temperature of the fiber by changing the chemical structure of the polymer main chain or side chain (Printing and Dyeing, 2019, 45(23): 6-10+25) , which in turn affects the strength, wear resistance, strong acid (alkali) resistance, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/52D01F1/10C08F212/08C08F220/18C08F220/14C08F222/20C08F220/54
CPCD01F6/52D01F1/10C08F212/08C08F220/14C08F220/54C08F220/1804C08F222/1063C08F220/56C08K3/042C08F2/44D01F6/46D01F6/54D01F6/90D01F6/92C08F2/18C08K9/02C08K7/02
Inventor 戚栋明汪继承黄骅隽李家炜孙阳艺
Owner ZHEJIANG SCI-TECH UNIV
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