A kind of preparation method of electret polylactic acid melt-blown nonwoven material
A non-woven material, polylactic acid technology, applied in non-woven fabrics, rayon manufacturing, textiles and papermaking, etc., can solve problems such as poor charge storage performance
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Embodiment 1
[0031] In parts by weight, weigh 20 parts of polytetrafluoroethylene, 1 part of nano-silicon nitride, 0.1 part of silane coupling agent KH-151, and 40 parts of deionized water, and mix nano-silicon nitride and silane coupling agent KH-151 Mix -151 with deionized water, stir magnetically at room temperature for 10 minutes at a stirring speed of 1500r / min to obtain a mixed solution, place the mixed solution in an ultrasonic cleaner for ultrasonic dispersion for 10 minutes to obtain a dispersion, filter to obtain a filter residue, and use Wash twice with deionized water, dry to constant weight at 60°C, and cool to room temperature to obtain the modified product. Mix the modified product and polytetrafluoroethylene in a high-speed food mixer to obtain a total The mixture is placed under a pressure of 30 MPa and pre-pressed for 10 minutes to obtain a pre-pressed product. The pre-pressed product is placed in a muffle furnace, and the temperature is raised to 100 ° C at a heating rate...
Embodiment 2
[0033] In parts by weight, weigh 25 parts of polytetrafluoroethylene, 3 parts of nano-silicon nitride, 0.2 parts of silane coupling agent KH-151, and 45 parts of deionized water, and mix nano-silicon nitride and silane coupling agent KH-151 -151 was mixed with deionized water, stirred magnetically at room temperature for 12min at a stirring speed of 1550r / min, and the mixed solution was obtained. The mixed solution was ultrasonically dispersed in an ultrasonic cleaner for 15min to obtain the dispersion, and filtered to obtain the filter residue, and used Wash 3 times with deionized water, dry to constant weight at 70°C, and cool to room temperature to obtain the modified product. Mix the modified product and polytetrafluoroethylene in a high-speed food mixer to obtain a total The mixture is placed under a pressure of 32 MPa and pre-pressed for 12 minutes to obtain a pre-pressed product. The pre-pressed product is placed in a muffle furnace, and the temperature is raised to 110 ...
Embodiment 3
[0035] In parts by weight, weigh 30 parts of polytetrafluoroethylene, 5 parts of nano-silicon nitride, 0.3 parts of silane coupling agent KH-151, and 50 parts of deionized water, and mix nano-silicon nitride and silane coupling agent KH-151 Mix -151 with deionized water, stir magnetically at room temperature for 15 minutes at a stirring speed of 1600r / min to obtain a mixed solution, place the mixed solution in an ultrasonic cleaner for ultrasonic dispersion for 20 minutes to obtain a dispersion, filter to obtain a filter residue, and use Wash with deionized water for 4 times, dry to constant weight at 80°C, and cool to room temperature to obtain the modified product. Mix the modified product and polytetrafluoroethylene in a high-speed food mixer to obtain a total The mixture is placed under a pressure of 35 MPa and pre-pressed for 15 minutes to obtain a pre-pressed product. The pre-pressed product is placed in a muffle furnace, and the temperature is raised to 120 ° C at a heat...
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