Electrostatic spinning process of brominated butyl rubber

A technology of brominated butyl rubber and electrospinning process, which is applied in the direction of electrospinning, rayon manufacturing, fiber chemical characteristics, etc. Problems such as high viscosity of butyl rubber

Active Publication Date: 2018-02-06
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the high viscosity and high resilience of bromobutyl rubber, it is difficult to spin, and it is difficult to carry out electrospinning of bromobutyl rubber by using the existing technology
At present, there are few researches on the electrospinning process of bromobutyl rubber at home and abroad, no perfect system has been formed, and no good results have been received.

Method used

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  • Electrostatic spinning process of brominated butyl rubber
  • Electrostatic spinning process of brominated butyl rubber
  • Electrostatic spinning process of brominated butyl rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0165] Example 1 Preparation of bromobutyl rubber fiber membrane

[0166] Weigh 4.45 g of bromobutyl rubber into a round bottom flask, add 50 mL of tetrahydrofuran, and stir to obtain a bromobutyl rubber solution;

[0167] Then add 4.45mg of dodecyltrimethylammonium bromide, and stir for 3h in a water bath at 50°C and 400r / min to obtain a spinning solution;

[0168] Spray liquid paraffin on the receiving screen and perform electrostatic spinning to obtain the primary fiber film; the spinning conditions are as follows: adjust the distance between the spinneret and the receiving screen to 20cm, and adjust the voltage to 20kV until the droplets form a cone. Spout from the nozzle and get the initial fiber film product on the receiving screen;

[0169] The initial fiber membrane product is immersed in methanol for extraction for 15 hours, and then freeze-dried for 40 hours to obtain bromobutyl rubber fiber membrane.

Embodiment 2

[0170] Example 2 Preparation of bromobutyl rubber fiber membrane

[0171] Weigh 5.2 g of bromobutyl rubber in a round bottom flask, add 50 mL of n-hexane, and stir to obtain a bromobutyl rubber solution;

[0172] Then add 0.026g octadecyltrimethylammonium bromide, 0.026g paraffin, 0.1g accelerator TT and 0.1g sulfur respectively, and stir in a water bath at 50°C and 400r / min for 3h to obtain a spinning solution;

[0173] Spray the release agent on the receiving screen and perform electrostatic spinning to obtain the initial fiber film; the spinning conditions are as follows: adjust the distance between the spinneret and the receiving screen to 20cm, and adjust the voltage to 18kV to form a cone. Then it is ejected from the nozzle, and the preliminary fiber film product is obtained on the receiving screen;

[0174] The initial fiber membrane product is immersed in methanol for extraction for 10 hours, and then freeze-dried for 30 hours to obtain bromobutyl rubber fiber membrane.

Embodiment 3

[0175] Example 3 Preparation of bromobutyl rubber fiber membrane

[0176] Weigh 11 g of bromobutyl rubber in a round bottom flask, add 50 mL of dimethyl sulfoxide, and stir to obtain a bromobutyl rubber solution;

[0177] Then add 0.11g of chlorohexadecylpyridine, 0.11g of stearic acid soap and 0.55g of nano silver respectively, and stir in a water bath at 50°C and 400r / min for 3h to obtain a spinning solution;

[0178] Spray the release agent on the receiving screen and perform electrostatic spinning to obtain the initial fiber film; the spinning conditions are as follows: adjust the distance between the spinneret and the receiving screen to 20cm, and adjust the voltage to 15kV to form a cone Then it is ejected from the nozzle, and the preliminary fiber film product is obtained on the receiving screen;

[0179] The first fiber membrane product is immersed in ethanol for extraction for 5 hours, and then freeze-dried for 20 hours to obtain bromobutyl rubber fiber membrane.

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Abstract

The invention discloses an electrostatic spinning process of brominated butyl rubber. The process comprises the following steps that 1, the brominated butyl rubber is added in an organic solvent, andstirring is conducted to obtain a brominated butyl rubber solution; 2, a surfactant is added into the brominated butyl rubber solution obtained in the step 1, and stirring is conducted to obtain a spinning solution; 3, electrostatic spinning is conducted to obtain an initial product of fiber thin film; 4, extraction and post-treatment are conducted on the initial product of the fiber thin film toobtain brominated butyl rubber fiber thin film. In the process, firstly, the spinnability of the brominated butyl rubber is improved by adding the surfactant; secondly, by spraying a release agent and/or liquid paraffin and/or zinc stearate on a receiving screen before electrostatic spinning, the obtained fiber thin film has self-support performance; thirdly, the extraction and the post-treatmentare conducted after electrostatic spinning, so that the shape and appearance of the obtained fiber thin film are controllable; moreover, the process is simple and easy to implement.

Description

Technical field [0001] The present invention relates to the field of electrostatic spinning, in particular to an electrostatic spinning process, in particular, to an electrostatic spinning process of bromobutyl rubber. Background technique [0002] Electrospinning is a processing technology in which the polymer is drawn in a solution or molten state with a high-voltage power supply, sprayed to form ultra-fine fibers, and received by a spinning device. Its operation is simple, high-efficiency, low-cost, and widely applicable. It can be used to prepare nano-fiber or micro-fiber films and can be produced on a large scale. [0003] Bromobutyl rubber (BIIR) is widely used in gas masks, masks, gloves and other protective products due to its low permeability, biological non-toxicity and good comprehensive properties. However, the solid bromobutyl rubber lacks respiration, which generates thermal stress on the user's skin and cannot be used well in daily life. The breathable bromobutyl r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D01D5/00D01F6/46D01F1/10
CPCD01D5/003D01D5/0061D01D5/0076D01F1/10D01F6/46D04H1/728
Inventor 郝向阳胡平史腾腾张明超禹方甜陈乐颖姚福天李和平沙杰韩纹莉农佳杰
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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