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1190results about How to "Raw materials are easy to get" patented technology

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

Method for improving mechanical stability of super-hydrophobic wood

The invention discloses a method for improving the mechanical stability of super-hydrophobic wood, belonging to the field of super-hydrophobic wood. The super-hydrophobic wood prepared by adopting the method disclosed by the invention overcomes the defects of poor surface mechanical property, short service life and the like of the super-hydrophobic wood prepared by adopting a conventional method, and is improved in durability and good in application prospect. A contact angle between the super-hydrophobic wood and water is more than 150 DEG, and a rolling angle is less than 10 DEG, therefore, the super-hydrophobic wood has excellent hydrophobic property and better self-cleaning property. The method comprises the following steps: soaking wood in epoxy resin to ensure that one layer of epoxy resin is covered on the surface of the wood; then soaking in a silicon dioxide solution grafted with an amino group to ensure that silicon dioxide reacts with epoxy resin so that the silicon dioxide is adhered on the surface of the epoxy resin to form a micro-nano secondary structure; and finally, carrying out hydrophobic modification on the micro-nano secondary structure on the surface of the wood, therefore the super-hydrophobic wood is prepared. The method is used for improving the mechanical stability of the super-hydrophobic wood.
Owner:NORTHEAST FORESTRY UNIVERSITY

Injectable double-crosslinked hyaluronic acid aquagel and preparation method thereof

The invention discloses an injectable double-crosslinked hyaluronic acid aquagel and a preparation method thereof. The preparation method comprises the following steps: synthesizing formylated hyaluronic acid and amino/methylacryloyl bifunctional hyaluronic acid containing disulfide bond in the side chain, uniformly mixing the formylated hyaluronic acid and amino/methylacryloyl bifunctional hyaluronic acid containing disulfide bond in the side chain with a water-soluble photoinitiator, and carrying out photochemical polymerization to obtain the injectable double-crosslinked hyaluronic acid aquagel. The method has the advantages of accessible raw materials, mild reaction conditions, short reaction time, simple technique and the like. The prepared aquagel is formed by a Schiff base crosslinking mechanism and a photocrosslinking mechanism, and the two crosslinking networks are connected together. The crosslinking network chain of the aquagel contains the disulfide bond and Schiff base, and thus, the aquagel has dual sensitivities for reduction and pH. The hyaluronic acid aquagel has flexible and adjustable mechanical properties, microstructure, degradation property, swelling capacity and the like, is injectable, and has application prospects in the aspects of cell transfer, tissue engineering, three-dimensional cell culture and the like.
Owner:WUXI JIANGNAN CABLE

Long-chain triazine macromolecular flame retardant with bicyclic phosphate structure and preparation method thereof

The invention relates to a long-chain triazine macromolecular flame retardant with a bicyclic phosphate structure and a preparation method thereof. The structure of the flame retardant is shown the specification, and the flame retardant is prepared by carrying out condensation polymerization on cyanuric chloride, 1-O-4-hydroxymethyl-2,6,7-trioxa-1-phosphabicyclo[2,2,2] octane (PEPA) and diamine, binary alcohol/phenol or binary thiol/thiophenol with a structural general formula of ZH-R-ZH in the presence of an acid-binding agent. The preparation method provided by the invention has the advantages that raw materials are readily available and the process is simple. The obtained intumescent flame retardant has the advantages of good thermal stability, high char yield at high temperature and significant expansion properties and can be used in the flame retardant modification of the materials singly or together with other materials; and the carbon source, acid source and foam source components of the flame retardant are in the same macromolecule, thus effectively solving the problems that the components of the flame retardant system are not uniformly distributed in the materials, overcoming the problems of volatilization, migration, exudation and the like of inorganic flame retardants and low-molecular-weight organic flame retardant systems and simultaneously alleviating the defects that the mechanical behavior of the materials deteriorates because of the addition of the flame retardant.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI

Winkle feed and preparation method

The invention discloses winkle feed and a preparation method. The winkle feed is characterized by comprising, by weight percentage, dried waste fish or fish meal, soybean cake powder, bran, rice husk, vegetable leaves, grass meal, bone tankage, animal visceral meal and shell powder. The method includes: taking the substances according to the proportion, respectively sufficiently grinding the substances, sieving via a 80-mesh sieve, beating the vegetable leaves into vegetable slurry, feeding the raw material powder and the vegetable slurry together into a fish feed mixing machine for mixing for 50 minutes, using a special fish feed circular mould pelletizer to prepare pallet feed with the particle size of 2 millimeters, and airing the feed prior to bagging and packaging. The winkle feed is prepared from multiple feed raw materials in a proportioned manner, provides a feed basis for winkle production, and is reasonable in proportioning of animal protein and vegetable protein in components, rich in nutrient components, and beneficial to digestive absorption of winkles to the various nutrient components. The feed prepared by the formula is easily available to raw materials, good in palatability, easy for digestion and fast in absorption, and the winkles are fast in growth, high in disease resistance and high in cultivation survival rate.
Owner:杨成胜

Organic biological feedstuff additive containing nano-selenium, zinc oxide, preparation and use method thereof

The invention relates to organic biological feed additives containing nano selenium and zinc oxide, a preparation method and a use method. The product of the organic biological feed additives is russety dry powder with a granularity between 80 and 140 nanometers, and can form suspension with water; the selenium content is between 0.00 and 36.00 percent and the zinc content is between 0.00 and 45.00 percent; the selenium content and the zinc content can not be 0 simultaneously; the organic biological feed additives are prepared by nano selenium organic biological intermediates and nano zinc oxide organic biological intermediates which are respectively prepared by fermentation of selenium dioxide and nano zinc oxide through microorganisms in the presence of various nutrient components; and 2.3 to 11.5 mass times of water is uniformly mixed with the organic biological feed additives containing the nano selenium and the zinc oxide and then sprinkled in feed which is then used for feeding laying hens, milk cows or nanny goats for 5 to 10 days. Compared with contrast feed, the selenium content and the zinc content of produced eggs are respectively 2 to 5 times and 2 to 2.5 times; the selenium content and the zinc content of produced milk are respectively 3 to 6 times and 2 to 4 times; and the selenium content and the zinc content of produced goat milk are respectively 3 to 7 times and 3 to 6.5 times.
Owner:田福平
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