Preparing method of environment-friendly solvent-type electrostatic spinning waterproof and moisture-permeable membrane
A waterproof and moisture-permeable membrane, environmentally friendly solvent technology, used in fiber types, filament/thread forming, textiles and papermaking, etc., can solve problems such as damage to human health, environmental pollution, etc., to enhance water resistance, excellent water pressure resistance, guarantee Effects of stability and durability
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[0029] Example 1
[0030] An environmentally friendly solvent-based electrostatic spinning waterproof and moisture-permeable membrane preparation method, the steps are as follows:
[0031] 1) Using water as a solvent to prepare 15% polyvinyl alcohol (Shanghai Kuraray Company, M W =145000) solution, and add 3% aziridine crosslinking agent (Guangzhou Wanjun Chemical Technology Co., Ltd., M W =40,000) and 5% fluorinated acrylic acid (Zhenzhou Chemical Group, M W = 80000) emulsion, stir evenly to obtain spinning solution; prepare hydrophobic fiber membrane on copper net by electrostatic spinning method, spinning voltage is 30kV, receiving distance is 20cm, spinning solution supply speed is 5mL / h, and the resulting hydrophobic The thickness of the fiber membrane is 15μm;
[0032] 2) After heat treatment and crosslinking of the hydrophobic fiber membrane: in an open oven, the fiber membrane is treated at 120°C for 30 minutes and placed at room temperature for 10 minutes to initiate a chemi...
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[0033] Example 2
[0034] An environmentally friendly solvent-based electrostatic spinning waterproof and moisture-permeable membrane preparation method, the steps are as follows:
[0035] 1) Using water as a solvent to prepare polyethyleneimine with a mass fraction of 20% (Nanjing Bangnuo Biotechnology Co., Ltd., M W =70000) solution, and add 5% aziridine crosslinking agent (Guangzhou Wanjun Chemical Technology Co., Ltd., M W =40,000) and 5% polysilazane resin (Laiyang Zhongxing Organic Silicon Technology Co., Ltd., M W =100000), stir evenly to obtain spinning solution; prepare hydrophobic fiber membrane on copper net by electrostatic spinning method, spinning voltage is 30kV, receiving distance is 20cm, spinning solution supply speed is 5mL / h, and the resulting hydrophobic fiber The thickness of the film is 15μm;
[0036] 2) Post-treatment of the hydrophobic fiber membrane by ultraviolet radiation crosslinking: Use an ultraviolet light source with an ultraviolet wavelength of 300nm...
Example Embodiment
[0037] Example 3
[0038] An environmentally friendly solvent-based electrostatic spinning waterproof and moisture-permeable membrane preparation method, the steps are as follows:
[0039] 1) Using water as a solvent to prepare polyethylene oxide with a mass fraction of 10% (Shanghai Udo Aoba Chemical Co., Ltd., M W =100000) solution and add 3% aziridine crosslinking agent (Guangzhou Wanjun Chemical Technology Co., Ltd., M W =40,000) and 7% polysilazane resin (Laiyang Zhongxing Organic Silicon Technology Co., Ltd., M W =100000), stir evenly to obtain the spinning solution; prepare a hydrophobic fiber membrane on the non-woven fabric by the electrostatic spinning method, the spinning voltage is 20kV, the receiving distance is 10cm, and the spinning solution supply speed is 5mL / h, The thickness of the hydrophobic fiber membrane is 15μm;
[0040] 2) Post-treatment of the hydrophobic fiber membrane by ultraviolet radiation crosslinking: Use an ultraviolet light source with an ultraviolet...
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