Polymer nanofiber film and preparation method thereof
A nanofiber and polymer technology, applied in fiber processing, fabric elongation, non-woven fabrics, etc., can solve the problem of poor performance of high thermal conductivity fillers, low thermal conductivity of thermal interface materials, and difficulty in meeting the heat dissipation requirements of highly integrated devices and other issues, to achieve the effect of improving thermal conductivity, increasing orientation degree, and increasing crystallinity
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Embodiment 1
[0030] A polymer nanofiber film, its preparation method comprises the following steps:
[0031] S1. Weighing 1 part by weight of polyvinyl alcohol and 10 parts by weight of water, mixing and stirring evenly, and then 800W high-power ultrasonic treatment for half an hour to carry out molecular chain unwinding treatment to obtain a spinning solution;
[0032] S2, use the spinning solution prepared in step S1 to carry out electrospinning, and use self-made parallel electrodes to collect polymer nanofibers; the parallel electrodes are composed of two metal flat plates placed in parallel; the direction of the barrel nozzle of the spinning solution Perpendicular to the long axis direction of the electrode, the nanofibers ejected from the nozzle will be placed between the two metal plates, and aligned along the long axis direction perpendicular to the metal plates, and then stacked layer by layer to form a crude polymer nanofiber film; preparation At the same time, the self-built las...
Embodiment 2
[0036] A polymer nanofiber film, its preparation method comprises the following steps:
[0037] S1. Weigh 1 part by weight of polyvinyl alcohol and 10 parts by weight of water, mix and stir evenly, and then perform 800W high-power ultrasonic treatment for half an hour to obtain a spinning solution;
[0038] S2, carry out electrospinning to the spinning liquid that step S1 makes, and adopt self-made parallel electrode to collect macromolecule nanofiber; In the direction of the long axis of the electrode, the polymer nanofibers ejected from the nozzle are placed between two metal plates, and arranged in a consistent manner along the direction perpendicular to the long axis of the metal plates, and then stacked layer by layer to form a crude polymer nanofiber film; At the same time of preparation, the laser diffraction device built by ourselves was used to detect the orientation degree of polymer nanofibers in real time, and the parameters of electrospinning were adjusted in real...
Embodiment 3
[0041] A polymer nanofiber film, its preparation method comprises the following steps:
[0042] S1. Weigh 1 part by weight of polyvinyl alcohol and 10 parts by weight of water, mix and stir evenly, and then perform 800W high-power ultrasonic treatment for half an hour to obtain a spinning solution;
[0043] S2, carry out electrospinning to the spinning liquid that step S1 makes, and adopt self-made parallel electrode to collect macromolecule nanofiber; In the direction of the long axis of the electrode, the nanofibers ejected from the nozzle are placed between the two metal plates, and arranged in a consistent manner along the direction perpendicular to the long axis of the metal plates, and then stacked layer by layer to form a crude polymer nanofiber film; the prepared At the same time, the self-built laser diffraction device is used to detect the orientation degree of polymer nanofibers in real time, and the parameters of electrospinning are adjusted in real time according to...
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