Views: 108 Author: Site Editor Publish Time: 2022-03-15 Origin: Site
The synthetic material developed by Dao-Fang Zhang et al. using natural zeolite and peat as raw materials and cement as binder had good removal effect on ammonia nitrogen and total phosphorus, and the adsorption amount was 131 mg-kg-1 for NH4+-N solution with an initial concentration of 10 mg-L-1 and 31 mg-kg-1 for total phosphorus solution with an initial concentration of 1 mg-L-1. Su-Ping Cui et al. invented a permeable material that could The ion-exchange properties and large specific surface area of zeolite have improved the adsorption of heavy metal ions such as Zn2+ and Pb2+ on the basis of the original performance of the permeable brick with zeolite.
Zhao Huaihong et al. studied the leaching behavior of Cs+ from radioactive waste cement curing bodies and found that zeolite had a strong adsorption effect on Cs+, and the Cs+ leaching rate of curing bodies mixed with 80% zeolite was one order of magnitude smaller than that of curing bodies without zeolite. The selective adsorption of zeolite on Cs+ and the encapsulation of zeolite surface by cement hydration products were the main reasons for the retention effect of curing bodies on Cs+. In addition, cement mortar mixed with zeolite has good radon and radiation prevention effects. The cement mortar containing zeolite prepared by He Dengliang et al. can have 60% radon prevention rate and 45% shielding rate against radiation, indicating that zeolite can be used as radon prevention material.
In the production of paint, zeolite is finely ground and powdered, and mixed with emulsion paint and zeolite powder, a special water-based paint can be prepared, which can adsorb moisture and harmful gases in the air; an indoor water-absorbent paint produced by zeolite and perlite, which can avoid water condensation in buildings, can be painted on indoor walls and plywood. A special anti-corrosion coating made of zeolite can effectively resist seawater corrosion and is especially suitable for shipbuilding industry.
Dried zeolite fines can also be used to produce fireproof coatings, and aqueous zeolite can be used to produce non-combustible coatings. In addition, the addition of zeolite in polyurethane wood floor coatings can greatly improve its storage time and stabilize its performance. In addition to the above, zeolite is also used in a large number of applications in coatings for the development of antibacterial coatings.
Sun Chunbao used natural zeolite as a carrier of antibacterial agent made of paint not only has good antibacterial broad-spectrum, persistence and stability, but also has adsorption and deodorization function. Yang Fei et al. found that the addition of silver-loaded antimicrobial zeolites not only did not negatively affect the rheological properties of coatings, but also reduced the consistency coefficient and apparent viscosity of coatings.
Zeolites can also be used in the development of moisture-regulating coatings due to their moisture-regulating properties. Xu Jiayou et al. used calcium chloride to assemble porous zeolite and diatomaceous earth to make a zeolite composite moisture regulating emulsion coating with moisture absorption capacity of 10% and moisture release capacity of 9%. The zeolite interior wall material produced by Guotou Shengshi also has strong environmental protection function.
Zeolite can also be used to prepare far-infrared special coatings. The far-infrared coatings made of silky zeolite concentrate obtained from Ding Hao's natural zeolite after the process of desliming and screening have strong radiation properties in the far-infrared region, and also have good selectivity. It is also reported that the paint produced by mixing color-carrying resin and oxalate in zeolite fine powder can play a protective and decorative role for building walls.
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