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923results about How to "Raw materials are readily available" patented technology

Polymer ice-coating-preventing coating containing modified nano particles and preparing method thereof

The invention discloses a polymer ice-coating-preventing coating containing modified nano particles and a preparing method of the polymer ice-coating-preventing coating containing modified nano particles. The ice-coating-preventing coating comprises, by mass, 1-15% of silicone oil, 1-40% of modified nano particle with the particle diameter of 10-100nm, 15-75% of monomer or prepolymer used for bonding, 1-12% of hydrophobic resin, 1-30% of curing agent and 10-80% of thinning agent. The preparing method of the polymer ice-coating-preventing coating includes the steps that preparing of the modified nano particles is performed, preparing of the hydrophobic resin is performed, and the modified nano particles, the hydrophobic resin, the monomers or the prepolymers used for bonding, the curing agents, the thinning agent and silicone oil are evenly mixed to obtain the coating. The polymer ice-coating-preventing coating containing modified nano particles and the preparing method of the polymer ice-coating-preventing coating containing the modified nano particles have the advantages that raw materials for preparing the coating are easy to get, the process is simple, operation is convenient to carry out, a coating layer prepared by spraying the coating on a metal or glass substrate has a contact angle of 160 degrees in static water under a normal temperature and a low temperature, has a rolling angle of 4 degrees and has the good ice-coating-preventing effect.
Owner:XI AN JIAOTONG UNIV +1

Method for trapping and fixing soil persistent organic pollutant using biological carbon

The invention disclose a method for intercepting and fixing the persistent organic contaminants of soil through bio-carbon which includes the following steps: 1) a biomass material is carbonized for 0.5 to 6 hours under the temperature of 250 to 550 DEG C and the condition of oxygen limitation and passes through the screen of 10 to 200 meshes, thus preparing the bio-carbon; 2) the prepared bio-carbon is added into the soil polluted by the persistent organic matters according to the ratio of 1 to 200tons/hektare and the soil within 0 to 30cm of a surface layer is ploughed for leading the soil to be fully mixed with the bio-carbon; 3) after being aged, the bio-carbon fiercely absorbs the persistent organic matters, thereby greatly reducing the biological effectiveness thereof and being capable of producing safe farm products in the oil polluted by the organic mattes. The bio-carbon adopted by the treatment method has the advantages of easy obtaining, low cost, environmental friendlessness, non-secondary pollution, simple preparation technique, good treatment effect and long time effectiveness; simultaneously the bio-carbon contains a plurality of carbon and other nutrition elements, thus being capable of providing abundant carbon sources and nutrition for the growing of soil crops and having the effect for enriching the soil.
Owner:ZHEJIANG UNIV

Catalyst for low-temperature catalytic combustion of volatile aromatic hydrocarbon organic matters and method for preparing catalyst

The invention relates to a chemical catalyst preparation technology, and aims to provide a catalyst for low-temperature catalytic combustion of volatile aromatic hydrocarbons and a preparation method thereof. The catalyst is based on cordierite honeycomb ceramics, and the surface of the base body is sequentially provided with an aluminum coating, an additive coating and an active component layer from the inside to the outside; based on the total amount of the catalyst, the catalyst contains 85-90 wt% of the cordierite honeycomb ceramics, 8-12 wt% of the aluminum coating, 1-5 wt% of the auxiliary coating, and 0.05-0.5 wt% of the active component layer; wherein, the composition of the aluminum coating is alumina; the composition of the auxiliary coating is a rare earth metal oxide; The constituents of the active component layer are noble metals. The preparation process of the invention is simple, the preparation raw materials are easy to obtain, the specific surface area is large, the cost is low, and the catalytic combustion reaction of benzene series such as toluene has high catalytic activity; the active component has strong binding force with the matrix, and is not easy to fall off and crack It can still maintain high activity under high space velocity airflow and thermal shock.
Owner:ZHEJIANG UNIV

Preparation method of polymer micro-capsules inspired by polyphenols chemistry

The invention discloses a preparation method of polymer micro-capsules inspired by polyphenols chemistry. Based on polyphenols chemistry, the preparation of micro-capsules is carried out by taking calcium carbonate micro-spheres as templates, and tannic acid and polyethylene imine as raw materials. The tannic acid can be subjected to oxidative polymerization under the weak alkaline condition, a formed tannic acid oligomer can be adsorbed on the surfaces of the calcium carbonate micro-spheres, then the polyethylene imine is utilized for crosslinking the tannic acid oligomer to form a tannic acid oligomer / polyethylene imine coating, and finally the calcium carbonate micro-spheres are removed by utilizing ethylenediaminetetraacetic acid to obtain tannic acid oligomer / polyethylene imine polymer micro-capsules. According to the preparation method disclosed by the invention, the preparation raw materials are cheap and easy to obtain, the preparation conditions are mild, the preparation technology is simple and feasible, and the regulation and control of the morphology of the micro-capsules and the thickness of walls of the micro-capsules can be achieved by changing the concentration of the tannic acid and the concentration of the polyethylene imine in a preparation process.
Owner:TIANJIN UNIV
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