Self-adhesive PSA (polysulfonamide)/silicone rubber composite nanofiber porous membrane

A composite nanofiber and polysulfone aramid fiber technology, which is applied in adhesives, dispersed particle filtration, electrical components, etc., can solve problems such as increasing process difficulty, poor adhesion, and affecting product qualification rate

Active Publication Date: 2016-09-07
JIANGXI XIAN CAI NANOFIBERS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, due to the poor bonding between fibers, the polysulfone aramid nanofiber porous membrane needs to be melted at a very high temperature (generally higher than 400 ° C), so that the adhesion betwe...

Method used

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  • Self-adhesive PSA (polysulfonamide)/silicone rubber composite nanofiber porous membrane

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preparation example Construction

[0055] Another aspect of the present invention provides a kind of preparation method of self-adhesive polysulfone aramid fiber / silicone rubber composite nanofiber porous membrane, at least comprises the following steps:

[0056] Sample dissolution: dissolve silica gel in 3 times the volume of organic solvent A, and dissolve polysulfone aramid in 5 times the volume of organic solvent B by weight;

[0057] Electrospinning: Pour the solution in step (1) obliquely into an electrospinning machine for electrospinning to form an electrospun polysulfone aramid / silicone rubber composite nanofiber porous membrane;

[0058] Thermal bonding: Thermal bonding of polysulfone aramid fiber and silicone rubber at 80-180°C to form a self-adhesive nanofiber porous membrane between fibers;

[0059] Wherein, A solvent is at least one of ethyl acetate, toluene, xylene, and acetone; B solvent is at least one of DMAC, DMF, and DMSO.

[0060] In one embodiment, the thermal bonding temperature is 90-16...

Embodiment 1

[0081] A self-adhesive polysulfone aramid fiber / silicone rubber composite nanofiber porous membrane, the mass ratio of polysulfone aramid fiber to silicon rubber is 1.25:1, and its preparation method comprises the following steps:

[0082] (1) Sample dissolution: Dissolve 1g of 703 silicone rubber B1 in 30ml of organic solvent ethyl acetate, 10g of polysulfone aramid fiber A1 in 70ml of organic solvent DMAC, after mixing, stir evenly;

[0083] (2) Electrospinning: Pour the solution in step (1) obliquely into the electrospinning machine for electrospinning. The voltage during the electrospinning is 25kV, and the distance from the spinning nozzle to the opposite electrode collecting substrate is 20cm, spinning flow rate is 0.003mm / s; form electrospun polysulfone aramid fiber / 703 silicone rubber composite nanofiber porous membrane;

[0084] (3) Thermal bonding: Polysulfone aramid fiber and 703 silicone rubber were thermally bonded at 80°C for 15 minutes, and the solvent was remov...

Embodiment 2

[0086] A self-adhesive polysulfone aramid fiber / silicone rubber composite nanofiber porous membrane, the mass ratio of polysulfone aramid fiber to silicon rubber is 9:1, and its preparation method comprises the following steps:

[0087] (1) Sample dissolution: Dissolve 1g of 705 silicone rubber B3 in 30ml of organic solvent toluene, and 9g of polysulfone aramid fiber A2 in 70ml of organic solvent DMF. After mixing, stir evenly;

[0088] (2) Electrospinning: Pour the solution in step (1) obliquely into the electrospinning machine for electrospinning. The voltage during the electrospinning is 25kV, and the distance from the spinning nozzle to the opposite electrode collecting substrate is 20cm, spinning flow rate is 0.003mm / s; form electrospun polysulfone aramid fiber / 705 silicone rubber composite nanofiber porous membrane;

[0089] (3) Thermal bonding: Polysulfone aramid fiber and 705 silicone rubber were thermally bonded at 180°C for 15 minutes, and the solvent was removed to ...

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Abstract

The invention provides a self-adhesive PSA (polysulfonamide)/silicone rubber composite nanofiber porous membrane. Nanofibers comprise PSA and silicone rubber, wherein the silicone rubber is used for enabling nanofibers to adhere to one another. The self-adhesive PSA/silicone rubber composite nanofiber porous membrane has outstanding performance of being high in strength, chemical corrosion resistant, high temperature resistant and the like; a preparation method is simple, easy to implement and lower in cost.

Description

technical field [0001] The invention belongs to the field of polymer materials, and more specifically, the invention relates to a self-adhesive polysulfone aramid fiber / silicone rubber composite nanofiber porous membrane and a preparation method thereof. Background technique [0002] With the increasingly stringent environmental protection requirements in our country, bag filter has gradually become one of the important dust removal equipment in air pollution control. There are many high-temperature conditions in the dust removal process of the bag filter. In the iron and steel, metallurgy, thermal power plant, cement and other industries, the temperature of the flue gas discharged during the production process mostly exceeds 130 ° C, which is called high-temperature flue gas in the dust removal project. High-temperature flue gas dust removal is more difficult and complicated than normal temperature dust removal, because high flue gas temperature will cause a series of chang...

Claims

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Application Information

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IPC IPC(8): D04H1/728D04H1/541D04H1/549D04H1/551B01D46/54H01M2/16H01M50/44
CPCB01D46/543D04H1/541D04H1/549D04H1/551D04H1/728H01M50/411H01M50/44Y02E60/10
Inventor 侯豪情周小平王琦吕晓义
Owner JIANGXI XIAN CAI NANOFIBERS TECH
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