How To Select Safe And Environment-Friendly Waterproof Technology And Products For Textile Processing

Fluorine free waterproofing agents may exist in the market, but the effect of these waterproofing agents may not be ideal, because fluorine free waterproofing agents usually need to use non fluorine substitute materials, which may cause harm to human body and the environment. In addition, because fluoride has excellent waterproof performance, fluoride may be a better choice.

If you are looking for fluorine free waterproof agent, it is recommended to look for products from reputable suppliers. Before using any fluorine free waterproof agent, appropriate tests should be carried out to ensure its effectiveness and safety.

In order to make the textiles waterproof and do not want to use fluoride, we can consider using water vapor permeation barrier agent. The water vapor permeation barrier can prevent water molecules from permeating out of the fabric, thus achieving the purpose of waterproof, and will not have a negative impact on other properties of the fabric.

When water vapor permeation barrier agent is used, appropriate proportion can be selected to add it to the fabric, and it can be treated (such as printing, dyeing or coating) to make the fabric waterproof. In addition, the use of vapor permeation barrier can also improve the permeability and softness of the fabric, making it more comfortable.

Water vapor permeation barrier agent is a chemical substance that can block water vapor from passing through various materials. Typically, these barriers are added to the material to help prevent the penetration of water molecules. For example, in buildings, water vapor permeation barrier can be used to prevent the infiltration of rainwater and air water molecules, thus protecting the building structure from corrosion and damage.

Water vapor permeation barrier agent can be liquid or powder and is usually used to protect various materials, including paper, plastic, metal, glass and fabric. Some common water vapor permeation barriers include polymers, amines, silicates, aluminum foil, etc. When using water vapor permeation barrier agent, it is necessary to conduct appropriate tests to ensure its effectiveness and safety.

Natural wax can be used as waterproof agent. Natural wax is a natural material composed of animal fat and wax, which is usually used as candle raw materials for cosmetics, skin care products and candles. Although natural wax is not a chemical substance, it may contain some chemicals, such as fatty acid and wax acid, which may affect the performance of waterproof agent.

Therefore, when using natural wax as waterproof agent, it is necessary to fully understand the composition of natural wax, and select appropriate waterproof agent to match the chemical characteristics of natural wax. In addition, since natural wax has certain hardness and wear resistance, it may be necessary to add some components with enhanced hardness and wear resistance in the waterproof agent to achieve better waterproof performance and durability.

To make textiles waterproof, physical methods can be used. The following are some common physical methods:

Textile coating: waterproof coating can improve the waterproof performance of textiles. Common coating materials include silica gel, polyurethane, etc. Apply the coating evenly on the surface of the textile to form a protective film to prevent moisture penetration.

Hydrophobic treatment of textiles: through the hydrophobic treatment of textiles, the surface can form a microstructure similar to the lotus leaf effect, so that the water drops roll off without penetration. This can be achieved by soaking the textile in a solution containing a hydrophobic agent, or by high-temperature treatment.

Textile nanotechnology: Nanotechnology can be used to prepare textiles with micro pore structure, which can prevent water penetration. Nanotechnology can also use nanoparticles to improve the waterproof performance of textiles.

Textile processing: Some special physical processing methods, such as high-pressure water flow treatment, calendering, etc., can make textile fibers more compact, thus preventing water penetration.

It should be noted that these physical methods may affect the softness and permeability of textiles. When selecting a suitable waterproof treatment method, it is necessary to consider the use and requirements of textiles, and conduct adequate testing and evaluation.

There are many standards for textile waterproof test, and the following are some commonly used standards:

ASTM D422: Textile waterproof performance test standard, applicable to the waterproof performance test of clothing, footwear, tents and other textiles.

ASTM D689: Textile diving performance test standard, applicable to the diving performance test of clothing, footwear, tents and other textiles.

ASTM C567: Test standard for waterproof clothing, applicable to the test standard for waterproof clothing.

ASTM C692: Water resistance test standard for textiles, which is applicable to the water resistance test of clothing, footwear, tents and other textiles.

API 571: Test Standards for Automobile Tents, applicable to the test standards for automobile tents.

The detection methods are various, including pressure test, penetration test, water vapor test, water contact test, etc.