简体中文
Antibacterial masterbatch: Disperse various antibacterial agents evenly in the matrix resin to make a concentrated body, that is, antibacterial masterbatch. The antibacterial masterbatch can make the antibacterial agent exert good antibacterial and long-acting antibacterial properties in plastic materials, and ensure stable performance in use.
OUR MASTERBATCH RANGE (Click to Know More details)
* Color masterbatch
* Black masterbatch
* White masterbatch
* Additive masterbatch
* Filler masterbatch
*Antibacterial masterbatch and principle of antibacterial agent
Antibacterial agents are chemicals that are highly sensitive to pathogens such as bacteria, molds and other microorganisms and pathogens such as viruses. By developing and screening appropriate varieties of antibacterial agents, we only need to add a small amount of them to other general-purpose materials, and after proper processing, we can make antibacterial materials and products that meet specific usage requirements.
Compared with organic and natural antibacterial agents, inorganic antibacterial agents have the advantages of high safety and good long-term effect, and especially their excellent heat resistance (the processing temperature can often withstand high temperatures of >600~100℃), This makes it the preferred antibacterial agent used in plastics, chemical fibers, and even ceramics. Inorganic antibacterial agents generally contain silver, zinc, copper and other metal ion components loaded in certain inorganic carriers, such as zeolite, phosphate, apatite, soluble glass and other types of structures or between surface layers, with slow-release antibacterial metals. The role of ions, so it has excellent antibacterial long-term effects.
Plastic antibacterial agent is a new type of plastic additive that can kill microorganisms and inhibit biological reproduction. Adding a small amount of plastic antibacterial agent can give plastic long-term antibacterial and bactericidal ability. Antibacterial agents can be roughly divided into three series: inorganic, organic and natural
(1) Inorganic antibacterial agents Plastic antibacterial agents use the antibacterial ability of metals such as silver, copper, and zinc themselves, and fix metals such as silver, copper, and zinc (or their ions) on zeolite or zeolite through physical adsorption or ion exchange methods. The surface of porous materials such as silica gel is made into antibacterial agent, and then it is added to the product to obtain antibacterial material.
①Silver-loaded antibacterial agent. Many metal ions have bactericidal and algae-killing effects. The activity of metal ions to kill and inhibit pathogens decreases in the following order: Ag>Hg>Cu>Cd>
Cr>Ni>Pb>Co>Zn>Fe, due to the high toxicity of Hg, Cd, Pb and Cr.
The metals actually used as metal bactericides are mainly Ag, Cu and Zn. And the sterilization of Ag
The ability is stronger than Cu, Zn. The bactericidal effect of silver is also related to the valence of silver, and the activity of silver ions to kill or inhibit pathogens decreases in the following order: Ag3+>Ag2+>Ag+.
(2) Organic antibacterial agents The research and development of a variety of organic antibacterial agents occupy a major position in the antibacterial methods such as inhibiting the production and reproduction of harmful bacteria and true (mold) bacteria, so as to kill bacteria. Organic antibacterial agents can be mainly used as fungicides, preservatives and antifungal agents
The use of organic antibacterial agents, in addition to paying attention to safety, also has problems such as poor heat resistance, easy hydrolysis, and short service life. Therefore, in the development and development of organic antibacterial agents, factors such as antibacterial ability, drug efficacy persistence, chemical thermal stability and UV resistance stability should be fully considered.
(3) Natural antibacterial agents Use natural raw materials as antibacterial agents, which are restricted by safety and processing conditions and cannot be marketed on a large scale at present. Mainly introduce the natural antibacterial agent-chitosan. Chitosan is made from chitin and deacetylated in concentrated alkali.
The obtained water-soluble polyglucosamine. Chitosan exhibits antibacterial activity against a variety of fungi
sex. It is generally believed that the antibacterial mechanism of chitosan is completed by a two-step reaction. First of all, under acidic conditions, -NH in the chitosan molecule combines with the dissociated anions such as silicic acid and phosphate contained in the bacterial cell wall, which hinders the free activity of the cells, thereby hindering the large-scale reproduction of bacteria. Then, chitosan is further reduced in molecular weight and enters the cells of microorganisms through the cell wall, which hinders the transformation process of genetic factors from DNA to RNA, resulting in the complete inability of microorganisms to reproduce.
OUR MASTERBATCH RANGE (Click to Know More details)
* Color masterbatch
* Black masterbatch
* White masterbatch
* Additive masterbatch
* Filler masterbatch
