During the processing or use of BOPP film, electrostatic action due to friction between the films will adsorb the gray tip or other contaminants of the air, which not only affects the appearance of the film surface, but also sticks to each other during use. The knot affects normal production.
In addition, the presence of static electricity can cause great harm to the human body. For this reason, the addition of antistatic or antistatic masterbatch during the processing of BOPP film can reduce and eliminate static electricity.
According to experts, antistatic agents are the most demanding varieties of BOPP film additives. Most of the BOPP film production processes require the addition of antistatic masterbatch. There are many types of antistatic agents, which are classified according to chemical structure, and there are four types of cationic antistatic agents, anionic antistatic agents, nonionic antistatic agents, and polymer conductive antistatic agents.
In foreign countries, BOPP film antistatic agents have developed rapidly, especially in developed countries such as the United States, Japan and Europe, both in the production and sales of antistatic agents are in the forefront of the world. Japan's BOPP film antistatic agent production has also gradually increased K, of which the main manufacturers are Kao stone base, lion, Japanese oil, Jiuling oil, Matsumoto oil and the first pharmaceutical company.
In addition, Japan Dayi Essence developed 13Elecon-300 for PP and PE resins. Singapore Polypropylene's products are also suitable for BOPP film. In general, the development of Europe is relatively stable, but the problem of antistatic agents is not easily solved. At present, there is no best measure to eliminate the static electricity on the surface of BOPP film. A lot of research has been done internationally, but the progress is not obvious.
Compared with foreign countries, the development of domestic antistatic agents started late, far behind developed countries, and it needs to import a large amount of antistatic agents and antistatic masterbatch every year. However, in recent years, the development of antistatic agents has made some progress. At present, it is developing towards new varieties of conductive fillers, reducing the amount of addition, comprehensive utilization of various properties of fillers, innovative processing techniques, progress and antistatic properties of stable products. Experts pointed out that the current technology of antistatic agent development focuses on the structural design of various surfactants.
In recent years, the development and development of double hydrophilic polymer type permanent antistatic agents has progressed rapidly and has been partially commercialized. Various hydrophilic polymers are used as antistatic agents, thereby developing a so-called polymer alloy type permanent antistatic resin, and the dispersion state of the permanent antistatic agent in the resin has a significant influence on the antistatic property of the resin.
Studies have shown that the permanent antistatic agent is mainly uniformly and finely distributed on the surface of the product in a layered structure or a rib-like shape to form a network-like "conductive channel", and the central portion is less and mainly exists in the form of particles.
The polymer type permanent antistatic agent can be classified into a polyether type and an ionic type. The polyether type includes polyethylene oxide (PEO), polyether ester amide, PEG, PEEa, and methyl acrylate; and the ionic type includes a quaternary ammonium methacrylate copolymer. Compared with the low molecular weight surfactant antistatic agent, the polymer antistatic agent has an antistatic effect and has a long-lasting effect, exhibits an antistatic effect, and has a low dependence on the relative humidity of the air. From the development trend of antistatic agents at home and abroad, it is currently developing in the direction of heat resistance, durability, functionality, wide applicability and product serialization.
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