Preparing method of high-performance polyethylene fiber and carbon nano tube composite fiber
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A carbon nanotube composite and polyethylene fiber technology, applied in the direction of single-component polyolefin artificial filaments, etc., can solve problems such as poor adhesion, large creep of high-performance polyethylene fibers, and poor heat resistance
Inactive Publication Date: 2017-03-22
SHAANXI JUJIEHAN CHEM CO LTD
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Problems solved by technology
However, the high-performance polyethylene fiber has relatively large creep,
Method used
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Embodiment 1
[0021] (1) Acid oxidation purification
[0022] Add 1 g of carbon nanotubes to 150 mL of concentrated H 2 SO 4 Ultrasonic treatment in medium for 1 h, and then heated to 100 °C under the condition of magnetic stirring, at this time, high concentration KMnO was added dropwise 4 The aqueous solution was refluxed at this temperature for 2 h, and concentrated hydrochloric acid was added after cooling, and after the reaction was completed, it was fully washed with deionized water until the pH value was 7, and the purified carbon nanotubes were obtained by filtration;
[0023] (2) Functionalization
[0024] Add 0.5 g of acid-oxidized and purified carbon nanotubes into 50 mL of ethanol and sonicate for 1 h, raise the temperature to 65 °C under high-speed magnetic stirring, and after stirring for 1 h, add the isopropanol solution in which the coupling agent is dissolved, and continue stirring for 40 After 1 min, it was filtered and dried, and after Soxhlet extraction for 10 h, func...
Embodiment 2
[0030] (1) Acid oxidation purification
[0031] Add 2 g carbon nanotubes to 160 mL concentrated H 2 SO 4 Ultrasonic treatment in medium for 1 h, and then heated to 120 °C under the condition of magnetic stirring, at this time, high concentration KMnO was added dropwise 4 The aqueous solution was refluxed at this temperature for 2.5 h, and concentrated hydrochloric acid was added after cooling, and after the reaction was completed, it was fully washed with deionized water until the pH value was 7, and the purified carbon nanotubes were obtained by filtration;
[0032] (2) Functionalization
[0033] Add 1 g of carbon nanotubes purified by acid oxidation into 60 mL of ethanol and sonicate for 1 h, raise the temperature to 70 °C under high-speed magnetic stirring, and after stirring for 1 h, add the isopropanol solution in which the coupling agent is dissolved, and continue stirring for 45 min After filtering and drying, functionalized carbon nanotubes were obtained after Soxhl...
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Abstract
The invention relates to the technical field of synthetic fiber industry, in particular to a preparing method of high-performance polyethylene fiber and carbon nano tube composite fiber. The preparing method of the high-performance polyethylene fiber and carbon nano tube composite fiber includes the steps that carbon nano tubes are added into concentrated sulfuric acid, the mixed solution is heated under the condition of magnetic stirring, a KMnO4 water solution is added, reflux is carried out for 2-2.5 h at the temperature, and concentrated sulfuric acid is added after cooling to obtain purified carbon nano tubes; the carbon nano tubes are added into ethyl alcohol and ultrasonically treated for 1 h, heating and stirring are carried out under high-speed magnetic stirring, isopropanol liquid is added, filtering and drying are carried out, and the functionalized carbon nano tubes are obtained through Soxhlet extraction; a high-performance polyethylene fiber solution is prepared, the carbon nano tubes and antioxidant are added, and high-performance polyethylene fiber and carbon nano tube gel solution is prepared through ultrasonic treatment and heating; the high-performance polyethylene fiber and carbon nano tube gel solution is added into a double-screw spinning machine to conduct spinning to obtain gel protofilament, and extraction and drying stretch are carried out to obtain the high-performance polyethylene fiber and carbon nano tube composite fiber. The fiber performance is improved.
Description
technical field [0001] The invention relates to the technical field of synthetic fiber industry, in particular to a preparation method of high-performance polyethylene fiber and carbon nanotube composite fiber. Background technique [0002] Ultra-high molecular weight polyethylene fiber is also called high-performance polyethylene fiber. It is one of the three high-performance fibers together with aramid fiber and carbon fiber. It has excellent corrosion resistance, weather resistance, low temperature resistance, cut resistance and electric resistance. Insulation, so widely used. However, the high-performance polyethylene fiber has relatively large creep, poor heat resistance, and poor adhesion, which largely limit its application. After the discovery of carbon nanotubes in 1991, it has attracted widespread attention at home and abroad. [0003] Carbon nanotubes have excellent mechanical, physical and chemical properties. In this application, carbon nanotubes are added to ...
Claims
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