Concentrated long-acting antibacterial and anti-fouling PC master batch and preparation method thereof

Abstract

The invention belongs to the technical field of plastic master batches, and particularly relates to a concentrated long-acting antibacterial and anti-fouling PC master batch and a preparation method thereof. The concentrated long-acting antibacterial and anti-fouling PC master batch comprises the following raw materials in parts by weight: 30-100 parts of polycarbonate and 1-20 parts of an antibacterial agent. The antibacterial agent is prepared from the following raw materials in parts by weight: 10-35 parts of a cationic polymer, 30-80 parts of a compatilizer and 20-50 parts of organic amine. The cationic polymer is guanidine salt, and the compatilizer is selected from maleic anhydride copolymer. The maleic anhydride copolymer and polyhexamethylene biguanide hydrochloride react to generate chemical bonding between the polyhexamethylene biguanide hydrochloride and the maleic anhydride copolymer, the compatibility of the polyhexamethylene biguanide hydrochloride and the polycarbonate is improved, moreover, the inventor finds that polyhexamethylene biguanide hydrochloride cannot be separated out on the surface of polycarbonate and cannot be separated from polycarbonate, and by adding organic amine, chemical bonding is generated between the organic amine and the maleic anhydride copolymer, and the compatibility and mechanical properties of the whole material can be further improved.

Description

technical field [0001] The application belongs to the technical field of plastic masterbatches, in particular to a concentrated long-acting antibacterial and antifouling PC masterbatch and a preparation method thereof. Background technique [0002] With the improvement of people's living standards and the improvement of health and hygiene awareness, consumers have higher and higher requirements for antibacterial and antifouling properties of various products, especially in the fields of household appliances, medical and health care, daily necessities and textiles. . In the existing technology, in order to improve the antibacterial and antifouling properties of the plastic masterbatch, some antibacterial agents are blended in the plastic masterbatch. [0003] The invention patent with the patent application number CN201811059580.6 discloses a nano-silver antibacterial agent and an antibacterial plastic containing the nano-silver antibacterial agent. In this patent, citric ac...

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Problems solved by technology

However, in the whole process, it is necessary to use highly toxic epichlorohydrin, highly corrosive boron trifluoride ether, and highly toxic organic solvents. The entire operation process is dangerous and does not conform to the production concept of green environmental protection. Moreover, the cost of the produced plastic masterbatch is relatively high, and the middle and downstream application market cannot accept it well.

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