Preparation method, product and application of porous resin fiber with oriented pore structure

A technology of porous resin and pore structure, applied in textiles and papermaking, fiber chemical characteristics, dry spinning, etc., can solve the problems of low strength, increased cost of porous materials, high hydrophilicity, etc., to improve strength and avoid vacuum freeze-drying , The effect of simple preparation method

Active Publication Date: 2020-10-30
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For water-insoluble synthetic resins and their monomers, the preparation of porous materials has not been reported; in addition, due to the high hydrophilicity and low strength, after freezing, in order to avoid the surface tension of water to make the pore structure collapse , vacuum freeze-drying of frozen products is required, which also increases the cost of preparing porous materials by ice template method

Method used

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  • Preparation method, product and application of porous resin fiber with oriented pore structure
  • Preparation method, product and application of porous resin fiber with oriented pore structure
  • Preparation method, product and application of porous resin fiber with oriented pore structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Dissolve 0.15g of benzoyl peroxide in 6ml of methyl methacrylate and mix evenly. Dissolve 0.7g of ER-10 in 14ml of deionized water and mix evenly to prepare a solution with a mass fraction of 5% ER-10. Mix the above methyl methacrylate mixed solution with the ER-10 solution evenly to form a 30% methyl methacrylate emulsion.

[0041] Add 1.2 g of crosslinking agent ethylene glycol dimethacrylate to the above emulsion, and mix well. Add 0.8 g of nanoclay to the above methyl methacrylate emulsion and mix well. Add 70 μl of N,N-dimethylbenzamide to the above emulsion and mix well, then centrifuge to remove air bubbles.

[0042] (2) Put the above-mentioned emulsion in a syringe, squeeze out the emulsion through an extrusion pump, place the copper ring in a low-temperature reaction bath (-100°C), pass the emulsion through the copper ring for freezing-spinning process, and freeze the frozen The fibers are collected with a motor.

[0043] (3) Place the collected fibers in...

Embodiment 2

[0047] (1) Dissolve 0.15g of benzoyl peroxide in 6ml of methyl methacrylate and mix evenly. Dissolve 0.7g of ER-10 in 14ml of deionized water and mix evenly to prepare a solution with a mass fraction of 5% ER-10. Mix the above methyl methacrylate mixed solution with the ER-10 solution evenly to form a 30% methyl methacrylate emulsion.

[0048] Add 1.2 g of crosslinking agent ethylene glycol dimethacrylate to the above emulsion, and mix well. Add 0.8 g of nanoclay to the above methyl methacrylate emulsion and mix well. Add 70 μl of N,N-dimethylbenzamide to the above emulsion and mix well, then centrifuge to remove air bubbles.

[0049] (2) Put the above-mentioned emulsion in a syringe, squeeze out the emulsion through an extrusion pump, place the copper ring in a low-temperature reaction bath (-100°C), pass the emulsion through the copper ring for freezing-spinning process, and freeze the frozen The fibers are collected with a motor.

[0050] (3) Place the collected fibers ...

Embodiment 3

[0054] (1) Dissolve 0.10g of benzoyl peroxide in 4ml of methyl methacrylate and mix evenly. Dissolve 0.8g of ER-10 in 16ml of deionized water and mix it evenly to prepare an ER-10 solution with a mass fraction of 5%. Mix the above methyl methacrylate mixture with the ER-10 solution evenly to form a 20% methyl methacrylate emulsion.

[0055] Add 0.8 g of cross-linking agent ethylene glycol dimethacrylate to the above emulsion, and mix well. Add 0.53g of nanoclay to the above methyl methacrylate emulsion and mix well. Add 50 μl of N,N-dimethylbenzamide to the above emulsion and mix well, then centrifuge to remove air bubbles.

[0056] (2) Put the above-mentioned emulsion in a syringe, squeeze out the emulsion through an extrusion pump, place the copper ring in a low-temperature reaction bath (-100°C), pass the emulsion through the copper ring for freezing-spinning process, and freeze the frozen The fibers are collected with a motor.

[0057] (3) Place the collected fibers in...

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Abstract

The invention relates to a preparation method of porous resin fiber with an orientation hole structure, a product and an application. The preparation method comprises steps as follows: 1) to-be-polymerized emulsion is subjected to emulsion spinning, directional freezing is performed during spinning, and frozen fiber is collected, wherein the to-be-polymerized emulsion comprises a resin monomer, afree radical polymerization initiator, a reactive emulsifier and a thickening agent or comprises a prepolymer, the free radical polymerization initiator, the reactive emulsifier and the thickening agent or comprises a self-emulsified prepolymer, the free radical polymerization initiator and the thickening agent; 2) the frozen fiber is subjected to a polymerization reaction in a low-temperature environment; 3) the frozen fiber is unfrozen and dried, and the porous resin fiber with the orientation hole structure is obtained. Through combination of the directional freezing, emulsion spinning andfreezing polymerization, the pore structure of the obtained porous resin fiber has orientation, and vacuum freeze-drying can be avoided in the preparation process.

Description

technical field [0001] The invention relates to the field of preparation of porous fibers, in particular to a preparation method, product and application of porous resin fibers with an oriented pore structure. Background technique [0002] Porous materials refer to a class of materials with a large number of pore structures and a high specific surface area. According to different material compositions, porous materials can be divided into porous metal materials, porous inorganic non-metallic materials and porous polymer materials. Porous materials are widely used in aerospace, environmental protection, electronic communications, medicine, transportation, construction, machinery, electrochemistry and petroleum due to their low relative density, good sound insulation, heat insulation, and permeability. Chemical industry and other fields. [0003] The preparation methods of porous materials are various, mainly including CVD method, hydrothermal method, sol-gel method, foaming...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/16C08F120/14C08F265/04C08F222/14D01D5/04
CPCC08F120/14C08F265/04D01D5/04D01F6/16
Inventor 柏浩李德文高微微
Owner ZHEJIANG UNIV
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