In the current society, many antibacterial products are more popular into daily life, with the enhancement of people's health care awareness, antibacterial plastics are widely used.

Antibacterial materials become just needed

With the improvement of living standards and the enhancement of health awareness, the concept of antibacterial is more and more sought after by the public, and antibacterial materials have become a new demand in the consumer market.

Mobile phone screens, protective shells, refrigerators, kitchenware, toys, food packaging, plastic containers, bathtubs, toilets, interior decoration materials and other plastic products, easy to be contaminated and breeding bacteria and mildew, to maintain long-term clean health and deodorization, so that antibacterial plastic products ushered in a rapid development period. What do antimicrobials fight?

Virus 1

The virus has a simple structure and simple reproduction mode, so the commonly used antibacterial mechanism generally has no effect on it, for example, the antibiotics commonly used in antibacterial are mainly to destroy the cell wall of bacteria, and the virus has no cell wall, so the antibiotics are helpless against the virus.

However, silver antibacterial agents have broad-spectrum bactericidal properties and have certain inhibitory effects on some viruses.

2 Bacteria

Bacteria are "relatively advanced" prokaryotes that can survive independently of viruses. It reproduces as an asexual binary division. Antimicrobials, on the other hand, work primarily by blocking bacterial reproduction.

For people, places that may be exposed to pathogenic bacteria are toilet seats, refrigerators, air purifiers, etc., and it is necessary to use antibacterial materials in these areas.

3 Molds

Some molds transform food into toxic substances, and some can produce toxins in food, that is, mycotoxins. Killing molds is mainly to inactivate cells or cut off their transmission routes and lose their ability to reproduce.

Generally, products in warm and humid environments should have anti-mold functions, such as air conditioning evaporators, drainage pipes, refrigerator seals, etc.

Production method of antibacterial plastics

01 Direct addition mixing method

Direct addition mixing method is to add antibacterial agents to plastic raw materials, through physical means to make antibacterial agents fully mixed with other materials, directly molding processing, to prepare the corresponding antibacterial plastic products.

02 Surface bonding method

The surface adhesive method is to spray the antibacterial agent on the surface of the product molding mold, the antibacterial agent is attached to the surface of the product to form an antibacterial product during injection molding, and sometimes the film or plastic sheet added with the antibacterial agent is first placed in the molding mold, and the film or sheet is attached to the surface of the product to form an antibacterial product during injection molding.

03 Post-processing method

The post-processing method is to treat the surface of the plastic part after the preparation of the plastic product to make it have antibacterial properties. At present, the methods used are surface spraying method and vacuum sputtering surface spraying method, which attaches antibacterial agents to the surface of plastic products, and the processing equipment cost is high, which is not conducive to large-scale application.

04 master granulation of antimicrobial agent

In order to avoid the problem of macroscopic uniformity and microscopic dispersion in antibacterial products prepared by direct addition method, antibacterial agent and substrate resin or resin with good compatibility can be extruded into antibacterial masterbatch by twin-screw extruder. Generally, the antibacterial concentration in antibacterial masterbatch is 25 times or 50 times of the antibacterial concentration in antibacterial products, and the antibacterial effect is significant.

Advantages of antibacterial masterbatch

Antibacterial masterbatch according to the addition of antibacterial agents, its classification is also different, according to the classification of antibacterial agents, antibacterial masterbatch is also divided into organic antibacterial masterbatch, inorganic antibacterial masterbatch, natural antibacterial masterbatch.

The addition of antibacterial masterbatch has a key effect on the final properties of plastics. It has been found that after the addition of antibacterial masterbatch, the mechanical properties and physical properties of the plastic are almost no effect, mainly because the matrix of the antibacterial masterbatch is usually the same as the matrix of the plastic or has high compatibility, so the addition of the antibacterial masterbatch can be well adapted to the plastic matrix and will not cause plastic deterioration.

Ruize antibacterial masterbatch, the antibacterial agent made into masterbatch, heat resistance, good dispersion, good filtration performance, good antibacterial effect, high long-term performance, washing resistance. Antibacterial masterbatch is widely used in plastic products, chemical fibers, non-woven fabrics and other industries, which can make its products have long-term antibacterial property, and has become an indispensable necessity for People's Daily life.

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