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A kind of preparation method of waterproof membrane material, its product and use

A waterproof membrane and application technology, applied in the direction of textiles, papermaking, non-woven fabrics, etc., can solve the problems of low mechanical strength of waterproof membrane materials, expensive equipment or raw materials, and large application limitations, and achieve mild conditions, high production efficiency, Ease of use

Active Publication Date: 2019-11-22
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome defects such as the preparation method of the waterproof membrane material in the prior art is too complex, the equipment or raw materials used are relatively expensive, and the reaction conditions are relatively harsh, and the mechanical strength of the waterproof membrane material in the prior art is low, Due to the defects of short service life, inconvenient use, and large application limitations, a preparation method, product, and application of a waterproof membrane material are provided.

Method used

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  • A kind of preparation method of waterproof membrane material, its product and use
  • A kind of preparation method of waterproof membrane material, its product and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1PVAc-PA6 electrospinning membrane material (electrospinning membrane 1)

[0051] Step 1: Dissolve 2g of PVAc (Mw=300,000) and 2g of PA6 (Mw=300,000) in two 18g DMF solvents at room temperature 25°C, and stir at 200 rpm on a magnetic stirrer 30min, and then dissolved in an oven at 60°C for 24h to obtain spinning solutions with mass fractions of 10%.

[0052] The second step: the spinning solution obtained in the first step is 100kHz through the ultrasonic frequency, the ultrasonic power is 180W ultrasonic treatment 30min, the spinning solution PVAc and PA6 are respectively placed in two airtight syringes, at room temperature, humidity is Under the conditions of 20% to 50%, the applied voltage is controlled to be 15kV, the injection speed is 0.5mL / h, the receiving distance is 15cm, the inner diameter of the nozzle is 0.8mm, the rotation speed is 300rpm, and the moving speed of the nozzle is 1.0m / min. The blended spinning was carried out on the silk equipment ...

Embodiment 2

[0058] Embodiment 2 PVAc-PES electrospinning membrane material (electrospinning membrane 2)

[0059] Step 1: Dissolve 2g of PVAc (Mw=600,000) and 2g of PES (Mw=350,000) in two parts of 18g DMF solvent respectively at room temperature 25°C, and stir at 200 rpm on a magnetic stirrer 30min, and then dissolved in an oven at 60°C for 24h to obtain spinning solutions with mass fractions of 10%.

[0060] The second step: the spinning solution obtained in the first step is 100kHz through the ultrasonic frequency, the ultrasonic power is 180W ultrasonic treatment 30min, the spinning solution PVAc and PES are respectively placed in two airtight syringes, at room temperature, humidity is Under the conditions of 20% to 50%, the applied voltage is controlled to be 12.5kV, the injection speed is 0.5mL / h, the receiving distance is 20cm, the inner diameter of the nozzle is 0.8mm, the rotation speed is 300rpm, and the moving speed of the nozzle is 1.0m / min. The blended spinning was carried ou...

Embodiment 3

[0063] Embodiment 3PVAc-PEEK electrospinning membrane material (electrospinning membrane 3)

[0064] Step 1: Dissolve 3g of PVAc (Mw=450,000) and 2g of PEEK (Mw=600,000) in 17g and 18g of dichloromethane solvents respectively at 25°C at room temperature, and stir at 200 rpm on a magnetic stirrer Stir at a rotating speed for 30 minutes, and then dissolve in an oven at 60° C. for 24 hours to obtain spinning solutions with mass fractions of 15% and 10%, respectively.

[0065] The second step: the spinning solution obtained in the first step is 100kHz through the ultrasonic frequency, and the ultrasonic power is 180W ultrasonic treatment 30min, the spinning solution PVAc and PEEK are respectively placed in two airtight syringes, at room temperature, humidity is Under the conditions of 20% to 50%, the applied voltage is controlled to be 15kV, the injection speed is 0.5mL / h, the receiving distance is 10cm, the inner diameter of the nozzle is 0.7mm, the rotation speed is 300rpm, and ...

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Abstract

The invention discloses a preparation method of a waterproof membrane material, a product and application thereof. The preparation method comprises the following steps that a spinning solution A and a spinning solution B are subjected to electrostatic spinning, blending is adopted for electrostatic spinning; the spinning solution A is obtained by dissolving a hot melt adhesive into an organic solvent A; the spinning solution B is obtained by dissolving a hydrophobic polymer into an organic solvent B; the melting point of the hot melt adhesive is lower than that of the hydrophobic polymer. The product can be fixed to the surface of a substrate in a hot bonding mode to be used as the waterproof membrane material. The preparation method is simple in technology, mild in preparation conditions, low in cost, high in production efficiency and suitable for industrial production; the prepared waterproof membrane material is controllable in fiber dimension, large in specific area, excellent in hydrophobic performance, high in mechanical strength, long in service life, convenient to use and wide in application range.

Description

technical field [0001] The invention relates to a preparation method of a waterproof membrane material, its product and application. Background technique [0002] Wettability is an important property of a liquid on a solid surface. Usually, a surface with a static contact angle of water on a solid surface greater than 90° is called a waterproof surface. Researchers have prepared a variety of bionic waterproof materials by paying attention to and studying various waterproof substances that exist in nature, such as lotus leaves, duck feathers, and butterfly wings. Diaphragms, biosensors and other fields have a wide range of application values. There are two main ways to construct waterproof surfaces: one is to use low surface energy substances to modify rough surfaces; the other is to construct micro / nano rough structures on the surface of hydrophobic materials. [0003] The preparation techniques of waterproof materials currently reported mainly include template method, sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4382D04H1/728D04H1/541
Inventor 李景烨吴景霞张伯武岳兵兵虞鸣王自强
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI