Inorganic antimicrobial finishing agents

2021-11-04   Pageview:90

Inorganic antimicrobial agent is a composite of inorganic substances such as metal ions with antimicrobial properties and their inorganic carriers. It has the advantage of good heat resistance and processability, and can be widely used in plastics, synthetic fibers, building materials, paper and other industries.

 

 

 

 

 

 

 

 

 

 

 

 

Titanate coupling agent has been widely used in the coating industry and is a multifunctional coating additive. But it is not a panacea. It is selective to pigments, fillers, resins, and methods of use. The best results can only be achieved through actual tests. It can not completely replace the silane coupling agent, each has its own advantages. For glass fiber, silicon dioxide, silicate and other silicon-containing inorganic substances, the effect of using silane coupling agent is better. Silane coupling agents can often improve the bending and tensile strength of products, but the elongation and impact strength have decreased.

The titanate coupling agent mainly improves the impact strength and elongation of the product, but often fails to improve the bending and tensile strength. When necessary, titanate and silane can be used synergistically to learn from each other and make the product performance more satisfactory. American Ken rich Petrochemical Company successfully developed a new alkoxy titanate [1W.1] in 1984, which has higher heat resistance and stability to solvents, compared with general mono alkoxy titanate coupling The coupling agent is easy to use. It comes in three forms: powder, pellets and liquid, which can be directly added to the resin for use without surface pretreatment of pigments and fillers. In addition to the development of new varieties of titanate coupling agents, a new zirconate compound similar to titanate was developed in 1985. It is said to have better characteristics, but the price is more expensive. In contrast, titanate The coupling agent is cheaper. In recent years, titanate coupling agents and aluminate coupling agents have also been widely used in combination, ebs wax structure which has its merits in terms of reducing costs and improving performance.

Silicone additives
Organosilicon compounds and polymers are widely used in polymer composite materials such as plastics, rubber, adhesives, sealants, coatings, inks, etc. as modifiers or processing aids due to their characteristics. Organosilicon compounds and polysiloxane products commonly used in coatings and inks mainly include the following three categories.

Organosilane coupling agent is mainly used in coatings to improve the adhesion of polymers to inorganic substrates, help organic materials to wet and disperse pigments and fillers, improve the storage stability of coatings, adjust coating viscosity, and improve coating film strength Wait.

Silicone oil mainly includes methyl silicone oil and modified methyl silicone oil. They are used in coatings to improve coating leveling, blooming, anti-floating, anti-crater and defoaming, as well as coating film gloss and slip, etc., and sometimes can also be improved Wetting and dispersion of fillers and pigments.

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