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CN-122013503-A - Durable flame-retardant super-hydrophobic fabric coating, method and application thereof

CN122013503ACN 122013503 ACN122013503 ACN 122013503ACN-122013503-A

Abstract

The invention belongs to the field of new materials, and particularly relates to a durable flame-retardant super-hydrophobic fabric coating, a method and application thereof. The invention uses ammonium polyphosphate (APP) and Pentaerythritol (PER) containing flame retardant to form a flame-retardant layer, and hydrophobic silica nano particles (SiO 2) -Polydimethylsiloxane (PDMS) to prepare the hydrophobic layer, and the coated fabric material has good antifouling property to water, cola, orange juice and the like, and has very good flame-retardant property. The flame retardant superhydrophobic fabric coating (HFRC) has a static contact angle (WCA) with water of greater than 150 DEG and still has very good water resistance and self-cleaning performance after 150 times of abrasion or 100 times of kneading. The limiting oxygen index of the material after HFRC treatment was 39%. Therefore HFRC has very good superhydrophobicity, durability and flame retardant property, and provides a new idea for preparing simple low-cost flame-retardant superhydrophobic fabric coating.

Inventors

  • LIU LIBIN
  • WANG BO
  • WANG ZUANKAI
  • ZHANG HAILONG
  • TAO FURONG

Assignees

  • 齐鲁工业大学(山东省科学院)

Dates

Publication Date
20260512
Application Date
20260130

Claims (9)

  1. 1. A durable flame-retardant superhydrophobic fabric coating, comprising a flame-retardant layer comprising a flame retardant ammonium polyphosphate APP and pentaerythritol PER, and a hydrophobic layer prepared from hydrophobic silica nanoparticles SiO 2 -polydimethylsiloxane PDMS, wherein the flame-retardant superhydrophobic fabric coating HFRC has a static contact angle WCA with water of greater than 150 ° and still has very good water repellency and self-cleaning properties after 150 abrasion or 100 kneads, and a limiting oxygen index of 39% after HFRC treatment.
  2. 2. The method for preparing the durable flame retardant superhydrophobic fabric coating according to claim 1, comprising the following steps: Step one, preparing a flame-retardant APP/PER flame-retardant coating Placing ammonium polyphosphate and pentaerythritol in 40-80 mL deionized water, placing the fabric in 50-90 o C oil bath for reaction for 0.5-1.5 hours, taking out, placing in a 60-100 o C oven, and drying for 1-3 hours to obtain a material loaded with APP/PER flame-retardant framework; Step two: Dispersing hydrophobic silicon dioxide and PDMS in 100ml absolute ethyl alcohol, carrying out ultrasonic treatment for 20 minutes under the condition of ice water bath of 0-4 o ℃, adding a curing agent after ultrasonic treatment, mechanically stirring to be uniform to obtain absolute ethyl alcohol precursor liquid, immersing the prefabricated flame-retardant cotton fabric in the absolute ethyl alcohol precursor liquid, stirring and immersing for 30-40 minutes under a room temperature sealing environment, placing in a 50 o C blast drying box for 30 minutes, and heating to 80 o C for curing for 2 hours to obtain HFRC coated cotton fabric.
  3. 3. The method of claim 2, wherein the cotton fabric material comprises cotton, sponge.
  4. 4. The method according to claim 2, wherein in step one, the ammonium polyphosphate concentration is 2-11 wt%.
  5. 5. The method of claim 2, wherein in step one, the concentration of pentaerythritol is from 0.6 to 4 wt%.
  6. 6. The method of claim 2, wherein in step one, the fabric area is from 10 to 50 cm 2 .
  7. 7. The method according to claim 2, wherein in step two, the concentration of hydrophobic silica is 0.5-2 wt%.
  8. 8. The method of claim 2, wherein in step two, the PDMS and curing agent concentrations are 1-4 wt% and 0.1-0.4 wt%, respectively.
  9. 9. Use of the durable flame retardant superhydrophobic fabric coating according to claim 1 in the textile and apparel arts.

Description

Durable flame-retardant super-hydrophobic fabric coating, method and application thereof Technical Field The invention belongs to the field of new materials, and particularly relates to a durable flame-retardant super-hydrophobic fabric coating, a method and application thereof. Background In daily life of people, textiles, cotton fabrics and polyurethane are widely distributed, and clothes worn by people and bedding used by people all have their body shadow, and with development of technology, the demands of people for fabrics are increasing. However, there are two major obstacles in developing sturdy and durable fabrics, firstly, most fabrics are very easy to burn, which causes fire hazards in daily life application, and endangers life safety of people. Another challenge is that fabric-based materials are susceptible to staining by domestic liquids such as water, coffee, tea, or cola. Therefore, the materials can realize water resistance, flame retardance and durability at the same time, which is very beneficial to the development of the textile industry and can effectively improve the life of people. The most common method of flame retardant treatment of fabric-based materials modifies the surface. It has been reported to be prepared by cyclic deposition of polycation/polyanion bilayer membranes onto cotton-based materials. Flame retardant coatings, however, are water soluble and lose performance after washing, which greatly hinders their practical application. The superhydrophobic surface inspired by the lotus leaf effect can keep dry and clean when being contacted with water. The water drops can roll off the surface of the lotus leaf very easily and remove dust, so that the self-cleaning property of the surface is realized. Superhydrophobic surfaces have shown their anti-fouling and self-cleaning applications on textile materials. However, the micro-nano structure necessary for superhydrophobic performance is vulnerable, and is easily damaged by external force, resulting in failure of superhydrophobic property. Thus, it is important to make a durable superhydrophobic fabric coating for practical applications. Although flame retardant superhydrophobic coatings are often implemented separately, there are also some studies that address both challenges in a single material. There have been studies on the use of a patterning process to produce flame retardant/self healing waterproof surfaces on cotton substrates. However, modifications, such as those that have included fluorocarbons, are expensive and can lead to environmental and safety concerns, particularly when such coatings are applied to garments. Thus, it is challenging to produce durable, environmentally friendly and inexpensive coatings with flame retardant properties and water repellency of the fabric material. The invention develops a fabric coating with excellent flame retardance, superhydrophobicity and durability. The coating uses APP with excellent flame retardant property, forms a flame retardant layer by PER and APP crosslinking, and forms a non-fluorine super-hydrophobic layer with low surface energy by PDMS and aerosil. The coating can be easily attached to cotton fabrics, PU sponge and cotton to prevent the cotton fabrics, PU sponge and cotton from burning, prevent pollution of daily liquid such as water, tea, coffee, milk and the like, can still keep the functions of the coating after mechanical abrasion, has simple preparation process and low cost, and provides a new idea for flame-retardant super-hydrophobic coating. Disclosure of Invention The invention provides a durable flame-retardant super-hydrophobic fabric coating, a method and application thereof, and aims to make up the defects of the prior art. The invention is realized by the following technical scheme: In a first aspect, the invention provides a durable flame-retardant superhydrophobic fabric coating, the coating comprises a flame-retardant layer formed by ammonium polyphosphate APP and pentaerythritol PER, and a hydrophobic layer prepared by hydrophobic silica nanoparticles SiO 2 -polydimethylsiloxane PDMS, the flame-retardant superhydrophobic fabric coating HFRC has a static contact angle WCA of greater than 150 DEG with water and still has very good water resistance and self-cleaning performance after 150 times of abrasion or 100 times of kneading, and the limiting oxygen index of the material treated by HFRC is 39%. In a second aspect, the invention provides a method for preparing a durable flame-retardant superhydrophobic fabric coating, comprising the following steps: Step one, preparing a flame-retardant APP/PER flame-retardant coating Ammonium polyphosphate and pentaerythritol are placed in deionized water of 40-80 mL, the fabric is placed in an oil bath of 50-90 o ℃ to react for 0.5-1.5 hours, and then the fabric is taken out and placed in an oven of 60-100 o ℃ to dry for 1-3 hours, so that the flame-retardant APP/PER flame-retardant coating is obtained. Step two: