Introduction and application of nano self-cleaning finishing agent

Introduction and application of nano self-cleaning finishing agents

What are nanomaterials?

Nanomaterials refer to materials with at least one dimension of the three-dimensional space at the nanometer level (1-100nm). It is a new generation of materials composed of nanoparticles with sizes between atoms, molecules and macroscopic systems. Due to the small scale of its constituent units, the interface occupies a considerable component. Therefore, nanomaterials have a variety of characteristics, which results in the system composed of nanoparticles having many special properties that are different from the usual bulk macromaterial systems. Nanosystems bring people’s understanding of nature to a new level. It is the intermediate link between atoms, molecules and macroscopic systems. It is a new field that people have never explored in the past. In fact, the evolution process of materials composed of nanoparticles into macroscopic systems Among them, changes in the degree of order in the structure and non-equilibrium properties in the state make great differences in the properties of the system.

To this end, Co., Ltd.Company grandly launches TEXCOTE (TEXCOTEBX1) products, which do not require the addition of cross-linking agents and Other auxiliary additives, after being treated with TEXCOTE (TEXCOTEBX1), the fabric can obtain nano finishing effects, such as water repellency, oil repellency, antifouling, and antibacterialWait. This kind of “four-proof” textiles have been widely used in various fields such as clothing fabrics, table cloths, decorative cloths, toy cloths, and military cloths.

NanoOrganizationPrinciple:

The secret of the lotus leaf effect lies mainly in its microstructure and nanostructure, not in its chemical composition. Among all plants, lotus leaves have a strong water-repellent and self-cleaning effect, and the contact angle of water on their surfaces reaches 160.4°. In addition to lotus leaves, taro leaves and kohlrabi leaves also have strong water-repellent and self-cleaning effects. The contact angles reached 160.3° and 159.7° respectively. The contact angles of water on various common fiber surfaces are shown in Table 1.

Table 1 Contact angle between various fibers and water:

It can be seen from Table 1 that although the data of different testers are different, generally speaking, no fiber has a contact angle of water on its surface greater than 90°, so common textile fibers do not have water-repellent ability. Does not have oil repellency.

TEXCOTE technology uses chemical means to implant particles with a size of about 100 nanometers into the surface and accessible areas of fibers and fabrics, and uses a three-dimensional network structure to fix the amphiphobic nanomaterials in the accessible areas of the fibers. Because the amphiphobic nanomaterials are water-repellent, oil-repellent and dirt-repellent, the material particles can form a uniform protective structure with extremely small gaps (100 nanometer scale) in the fiber. This protective structure is very similar to the unique structure on the surface of the lotus leaf in nature. It greatly increases the specific surface area of ​​the object surface when it comes into contact with foreign substances, making it difficult for water droplets, dust, bacteria, stains and oil droplets under normal temperature and pressure to penetrate the gaps and enter the interior of the fibers and fabrics, resulting in a special surface effect. Effect—Nano treatment effect. At the same time, because the Deco nano finishing agent contains nano-level titanium dioxide, it generates highly chemically active superoxide anion radicals and hydroxyl radicals under photocatalysis. When bacteria are encountered, they directly attack bacterial cells. Causes the degradation of organic matter in bacterial cells, thereby killing the bacteria and causing them to decompose.

After treatment with TEXCOTE (TEXCOTEBX1) finishing agent, since the material particles that form the protective structure are extremely small, the original characteristics of the fabric (such as appearance, Color, feel, comfort, etc.).

Table 2 Application of TEXCOTE (TEXCOTEBX1) finishing agent on fibers:

Note: Water repellency is tested according to AATCC 22 standard; oil repellency is tested according to AATCC 118 standard; washing resistance is tested according to AATCC 135 household washing method standard.

As can be seen from Table 2, TEXCOTE (TEXCOTEBX1) finishing agent has high waterproof, high oil-proof and excellent properties on polyester, nylon, cotton and wool fabrics. Washability.

Table 3 Antibacterial properties of TEXCOTE (TEXCOTEBX1) finishing agent:

As can be seen from Table 3, fabrics treated with TEXCOTE (TEXCOTEBX1) finishing agent have a high inhibition rate on bacteria and can be used in underwear, medical and other textiles. Provide safety protection for the human body.

Editor: Miss Xie

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