54results about How to "High biomass content" patented technology

The invention relates to multimedia multiaperture water purifying water permeable material, which is characterized in that the invention contains the raw materials of common concrete, agricultural and forest castoffs and other inorganic materials, wherein, the agricultural and forest castoffs comprise rice hulls, peanut shells, nutshells, etc. The other inorganic materials comprise slag, sintered aggregates, zeolite, granulating slag, steel slag, active carbon, etc. The agricultural and forest castoffs contain rich carbon, therefore, the invention can everlastingly provide high C/N ratio for microbe, and then keep stability and durative for a sewage disposal system in the low C sewage disposal. The water permeable rate of the invention is equal to or larger than 5 mm/s, therefore, the invention has the advantages of high sewage persistent processing rate and long service life.

The invention discloses starch-based composite and a preparation method thereof. The composite is formed by, by weight, 100 parts of modified starch and 10-100 parts of polyester through melt blending. The structural formula of the modified starch is showed in the description and claims, wherein St refers to starch molecules and R group is alkyl group (CnH2n+1). Esterified starch comprises, by weight, 100 parts of natural starch, 0-200 parts of solvent, 10-50 parts of catalyst and 1-50 parts of modifier. The preparation method includes melt blending the components according to the weight to obtain the starch-based composite. The preparation method is high in efficiency, low in cost, simple in process, controllable in performance, and suitable for preparing thermoplastic materials with various performance requirements.

A polylactic polyester resin having a chemical structure represented by Formula (1), an acid value of 300 to 2,500 eq/10⁶ g, a number average molecular weight of 2,000 to 50,000, and a lactic acid content percentage of not less than 40 weight %,

Z—(O—(CH₂CH₂O)_p—(CO—Y—O)_q—X)_r  (1)

• • wherein Z is an r-valent organic group, Y is —CH(CH₃)—, or a mixture of —CH(CH₃)— and C2-10 linear or branched alkylene group, and X is a residue of a polybasic acid having 2 or more carboxyl groups, or hydrogen; each of X, Y, and Z may be one kind or a mixture of a plurality of different kinds; and p, q, and r are 0 or a positive integer, p has an average value of not less than 0.5, q has an average value of not less than 5, and r has an average value of not less than 3 and not more than 15.

An aqueous dispersion, an aqueous resin composition, an aqueous adhesive, an aqueous paint, aqueous ink, a laminate made of an aqueous adhesive or aqueous ink, a packaging material, a sustained-release biodegradable coating agent, and a sustained-release biodegradable coated body comprising the sustained-release biodegradable coating agent, which contain the polyester resin.

The invention discloses thermoplastic vulcanized rubber based on polylactic acid, and a preparation method thereof. The rubber comprises the raw materials of, by weight, 50-90 parts of ethylene-vinyl acetate rubber, 10-50 parts of polylactic acid, 0.1-3 parts of peroxide, 0.1-5 parts of a free radical stabilizing agent, 0.05-1 part of an antioxidant, 0.1-3 parts of an anti-aging agent, and 1-20 parts of a plasticizer. With the preparation method provided by the invention, the obtained thermoplastic vulcanized rubber has the characteristics of high biomass content, high strength, high elongation rate, good resilience, partial biodegradability, excellent thermoplasticity, and the like. The preparation method is simple, and industrialization can be easily realized.

The invention discloses a hyperbranched polyester modified itaconic acid based aqueous light-cured resin, and a preparation method thereof. The hyperbranched polyester modified itaconic acid based aqueous light-cured resin is mainly prepared from following raw materials: itaconic acid, 1,4-butanediol, hyperbranched polyester polyol, epoxy acrylate, an esterification catalyst, a polymerization inhibitor, a polycondensation catalyst, a stabilizer, a neutralizer and water. The preparation method comprises the following steps: (1) mixing itaconic acid, 1,4-butanediol, hyperbranched polyester polyol, epoxy acrylate, the esterification catalyst and the polymerization inhibitor, heating under nitrogen protection for reaction, performing thermal insulation pressure-reduced reaction until no more water is generated, stopping reaction, and cooling; (2) adding the polycondensation catalyst and the stabilizer, performing pressure-reduced heating reaction, cooling, adding the neutralizer, adding water, and obtaining of a finished product. The hyperbranched polyester modified itaconic acid based aqueous light-cured resin is large in color, high in curing speed, hardness, adhesion force, flexibility, water resistance, and biomass content, and is friendly to the environment; the method is simple; no solvent is added in the preparation process; cost is low; and the preparation method is suitable for industrial production.

The invention discloses flame-retardant bismaleimide resin and a preparation method thereof. The preparation method is characterized in that full-biomass eugenol is processed into eugenol salt suspensoid under the effect of strong base of alkali metal; a chloromethane solution of phosphorus oxychloride is dropped to the eugenol salt suspensoid to react, so as to obtain a biomass-based phosphate ester flame retardant; bismaleimide and 2,2'-diallyl bisphenol A are mixed with the obtained phosphate ester; the mixture is subjected to solidifying and after-treatment, so as to obtain the flame-retardant bismaleimide resin. Compared with petroleum-based bismaleimide resin, the flame-retardant bismaleimide resin prepared by the method is prepared through a biomass-based raw material, namely, eugenol; the raw material is green and reproducible; the flame-retardant bismaleimide resin remains the mechanical property and processing property of the petroleum-based eugenol resin and is outstanding in flame retardant property. The preparation method has the characteristics of being low in cost, and simple in production process; the preparation method has a wide application prospect in the fields such as the aerospace field, the electronic information field and the electrical insulation field.

The invention provides a preparation method and application of a carbon-based catalyst from excess sluge, relates to a preparation method and application of the carbon-based catalyst from excess sludge, and aims to solve the problems of poor disinfection effect of water by using peracetic acid, high energy consumption of activating peracetic acid by using radiation, easy secondary pollution caused by metal ion activation and high cost of carbon nanotube activation in the prior art. The preparation method of the carbon-based catalyst from the excess sludge comprises the following steps: 1, dehydrating; 2, drying; 3, activating the sludge; 4, introducing transition metal; and 5, washing and drying. The carbon-based catalyst is used for activating peroxyacetic acid to degrade organic pollutants in water. The method is suitable for degrading organic matters in water.

The invention discloses a bio-based thermoplastic elastomer material and a preparation method thereof. The bio-based thermoplastic elastomer material comprises following raw materials by weight: 10-60 parts of a 3-hydroxybutyrate homopolymer, 10-60 parts of a hydroxyalkanoate copolymer, 10-120 parts of an ethylene-vinyl acetate random copolymer and 0.01-3 parts of a functional auxiliary agent. The bio-based thermoplastic elastomer material prepared by the preparation method has characteristics of small spherocrystal dimension, high springback rate, good resilience after being repeatedly stretched, high strength, large elongation percentage, excellent thermoplastic properties, and the like. The preparation method is simple and prone to industrialization.

Disclosed are a flame-retardant bismaleimide resin and a preparation method thereof comprising: forming an eugenol salt suspensoid from a whole biomass eugenol in the present of a strong alkali metal base, adding dropwisely a solution of phosphorus oxychloride in methyl chloride to react to obtain a biomass-based phosphate flame-retardant; mixing bismaleimide, 2,2′-diallylbisphenol with the obtained phosphate, curing and posttreating to obtain the flame-retardant bismaleimide resin. Compared with petroleum-based bismaleimide resin, the flame-retardant bismaleimide resin prepared by the present invention is obtained from eugenol derived from biomass, and the raw material is green and renewable. It maintains mechanical properties and processing properties of the petroleum-based bismaleimide resin and has an excellent flame-retardant property. The preparation method provided by the invention has the advantages of low cost and simple production process, and has wide application prospect in the fields of aerospace, electronic information, electrical insulation and the like.

The invention provides slow controlled-release fertilizer used for corn. The fertilizer is prepared from a urea furfural condensation product, furfural residues, rice husk charcoal, compound fertilizer and vermiculite powder. According to the characteristics of large biomass of corn and high demand of nitrogen and potassium, the compound fertilizer is quick in fertilizer efficiency, and is combined with the vermiculite powder and the rice husk charcoal, the nitrogen and potassium content is increased, the dissolution rate of nitrogen and potassium is reduced, the slow action effect of the compound fertilizer is improved, the demand for nitrogen and potassium in a corn large bell mouth stage and later growth and development is provided, and the vermiculite powder can also improve the fertility; the furfural residues and the urea furfural condensation product are combined, the biomass content and the nitrogen release capacity of the urea furfural condensation product are improved, at thesame time, the content of organic matter in the furfural residues and the rice husk charcoal is high, soil physical properties are improved, and nitrogen, phosphorus and potassium elements can be released to promote corn growth; and the rice husk charcoal is combined with the vermiculite powder to improve soil fertility and improve soil, and the slow controlled-release fertilizer used for the corn can better achieve slow releasing of nitrogen and potassium, and the effective period is more than 70 days.

The invention provides a heat-resistant polyactic acid composition and a preparation method thereof, and belongs to the technical field of high polymer materials. The composition consists of polylactic resin and a starch composition, and the weight ratio of the starch composition to the polylactic resin is (1: 99) to (50: 50). The starch composition contains a starch grafted copolymer and a nucleating agent; and the weight ratio of the starch grafted copolymer to the nucleating agent is 100: (1 to 100). Through a series of mixing of the raw materials, the polyactic acid composition is obtainedthrough melt blending. The heat-resistant polyactic acid composition is green and environmentally-friendly, low in cost and simple in technology, and the degradable polyactic acid composition with controllable performance is obtained.