47results about How to "Retain natural properties" patented technology

A cellulose membrane for separating Co2, SO2 hydrogen sulfide, etc is prepared from N-methyl morpholine oxide (MMNO) and cellulose through proportionally mixing, stirring for dissolving, defoaming to obtain membrane casting liquid, forming liquid membrane on glass plate by doctor blading process, coagulating and slowly drying. Its advantages are high crystallinity, mechanical strength and resistance to high temp, acid and alkali, and good osmotic separation performance.

The invention relates to a method for increasing the sweetness of erythritol by cocrystallization and a resulting product. The method comprises the following steps of (1) preparing an erythritol super-saturated solution; (2) adding a high-intensity sweetener in the erythritol super-saturated solution; (3) performing cocrystallization of the erythritol, where temperature is reduced after the addition of the high-intensity sweetener in the erythritol super-saturated solution, so as to obtain a cocrystallization product of the erythritol and the high-intensity sweetener; and (4) drying the product within the range of 40-60 DEG C if necessary, and performing screening to obtain an erythritol cocrystallization product with different particle sizes, wherein in general, the cocrystallization erythritol does not need to be dried as the product can be dried by the crystallization heat in the crystallization process. The invention employs good crystallinity of the erythritol, and integrates the high-intensity sweetener and the erythritol together by cocrystallization, thereby increasing the sweetness of the erythritol and achieving the effects of uniform sweetness, stable content and easy process.

The invention provides a preparation method and application of a banana cellulose film. A banana stalk fiber is firstly subjected to acid and alkali treatment; afterwards, cellulose is dissolved and modified by utilizing ionic liquid; subsequently, a regenerated cellulose film is obtained through a series of preparation processes of washing with a mixed solution, and the like. The dissolution of the cellulose by the ionic liquid belongs to physical dissolution; the natural characteristic of the cellulose is better maintained and the film is enabled to have favorable mechanical performance, biodegradability and fruit preservation effect.

An impregnating method of fast growing wood mainly aims at processing artificial fast growing wood. Processes of two times of drying and matching of vacuuming and high pressure impregnating are utilized, and particularly a vacuuming method is used to accelerate impregnating speed of wood impregnating solution, and the impregnating is uniform and retaining amount of active ingredients is large; not only original natural attributes of wood are retained after the wood is processed through the method matched with the wood impregnating solution, but also the wood has advantages of flame retardance, anticorrosion, termite proofing, deformation resistance, environmental protection, adjustable density and rigidity and the like; the performance of the wood is good, and the wood becomes an ideal substitute for natural precious wood species, usage requirements in fields of furniture, solid wood flooring and the like can be met completely.

The invention discloses a dentritic heparin nano-material and a modified biological type artificial blood vessel. The dentritic heparin nano-material provided by the invention has a terminal branch unit shown in formula I, and is obtained by a reaction between polyamidoaminedendrimers using hydrazide group as a terminal group and heparin, wherein the inner core of the polyamidoaminedendrimers is cystamine, and the dentritic frame of the polyamidoamine dendrimers is hydrazide modified polyamidoamine including -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5 and 7.5; and the connection between the heparin and polyamidoamine is a glycosidic bond formed a reaction between the hydrazide on the surface of the polyamidoamine and the heparin reducing terminal. The disulfide bond in the dentritic heparin nano-material is cut through a reducing agent to obtain a sulfydryl site which can react with an intravascular stent material; and the surface in a blood vessel can be activated through a coupling agent of a two-way functional group, and the heparin with a branch structure can be fixed on the inner surface of the blood vessel material through chemical bond covalence, so that a composite artificial blood vessel with an anticoagulation effect can be obtained.

The invention discloses a micro-carbonized floor board which comprises a floor board block, wherein a carbonized layer is arranged on an upper surface of the floor board block; the floor board block is rectangular in shape; and the surface of a board is deeply carbonized at a high temperature, thereby forming the carbonized layer. After being subjected to the deeply carbonizing technical treatment, the micro-carbonized floor board provided by the invention has the advantages that the hydrophilic property of the floor board is reduced, the anti-damp and anti-deformation properties of the floor board are promoted, the content of celluloses in the floor board is reduced, the floor board is difficult to be damaged by worms, the anticorrosion and mothproof capabilities are promoted, the color of the floor board is natural, the color of the floor board can be changed without painting toxic substances such as paints, and the product is more environmentally-friendly.

The invention discloses an efficient crushing and separating method for eggshells and shell membranes obtained by incubation and hatching of hatching eggs of poultry. The efficient crushing and separating method comprises the following step: performing suffumigating, drying, primary crushing, vibration screening, electric windwill separation and the like on a complete eggshell (including inner and outer layers of shell membranes) obtained by incubation and hatching. The method is high in crushing and separating efficiency, and the purity of obtained products, i.e. eggshell powder and shell membrane powder, is 98 percent or above, and the moisture content is less than 8 percent; the obtained products are free of pathogenic bacteria, nontoxic, harmless, pollution-free and safe; furthermore, the natural attributes of the eggshells and shell membranes which are obtained by incubation are retained, and the products meet the feed level standard; and the method is suitable for batch processing of breeding poultry incubation fields of different scales, and the eggshells and the shell membranes can be separately used or combined for use so as to develop the breeding value of the nutrition and the functionality of the eggshells and the shell membranes, improve the productivity of the poultry and the disease resistance of livestock, realize reuse of complete eggshell resources obtained by the incubation and reduce the pollution to the environment.

The invention relates to a method for manufacturing structural timber by the sheet lamination of fast growing wood, which is characterized by comprising the following processing steps of: 1, machining fast growing wood (such as fast growing poplar, fir, eucalyptus or masson pine) into veneers or large wood shavings, and drying the veneers or the large wood shavings until the water content is 2-10%; 2, gluing the veneers or the large wood shavings, wherein an adhesive can be phenol formaledlyde (PF), urea formaldehyde (UF) or diphenyl-methane-diisocyanate (MDI) and depends on the veneer type and the adhesive type; 3, laminating and paving the veneers or the large wood shavings into plate blanks, and making orienting structures of the plate blanks by means of a paving mechanism; and 4, feeding the plate blanks into a combined type hot press with a lateral steam injection mechanism, compressing the plate blanks in the hot press, then directly injecting steam to the plate blanks from the lateral sides by means of the lateral steam injection mechanism at the preliminary stage of hot compression, and finally compressing at high pressure and then compressing at lower pressure in the common compression stage to obtain laminated veneer lumber (LVL) type structural timber. The invention has the advantages of short hot compression time, high production rate, energy saving, low cost and high product shape stability, and can be used for manufacturing thick laminated lumber with a thickness of 20 mm or above.

The invention discloses a preparation method of a spunlace nonwoven fabric for a dandelion mask, which comprises the following steps: 1) using 100% dandelion fibers to prepare a cross-laid layer; 2) preparing a parallel-laid layer; 3) combining the two layers obtained by parallel-laid The fiber web is laminated on the cross-laid two-layer fiber web; 4) Spunlace reinforcement, the laminated four-layer fiber web is sent to the spunlace machine, and the spunlace is directly spunlace after the net is lifted to obtain a dandelion spunlace non-woven fabric ; 5) drying, the dandelion non-woven fabric after spunlace passes through the hot air penetration dryer, and the moisture remaining in the non-woven material is quickly discharged; 6) slitting and packaging, on the slitter according to the specified Slitting and winding according to the required specifications. The invention does not produce any harmful pollutants during the production process, and the final product is degradable in a natural state, which conforms to the theme of green environmental protection and is a new benchmark for intelligent manufacturing products in the 21st century.

The invention discloses dry heat transfer printing paper and a preparation method thereof for textiles. The method includes preparing viscous fluid with a solid content of 2-10% w / w from a high polymer thickener and a water-soluble hot melt adhesive according to a mass ratio of (1:5)-(5:1); adding assistants such as acid, alkali, an absorbent and a fixing agent into the viscous fluid according to categories of fabric and dye so as to produce a transfer substrate; and subjecting the transfer substrate to coating, drying and press polishing processing for the paper to obtain the dry heat transfer printing paper for the textiles. The paper can generate strong adhesive force on the surface under a certain temperature and pressure and can be tightly attached to the fabric. If the paper is used for printing of non-thermoplastic fabric, modified or dewing treatment is not required any more before the printing, transfer printing can be directly performed on dry-state fabric, the dye transfer stability is guaranteed, and clean and high-quality printed patterns can be obtained; and simultaneously, the processing time is shortened, waste water emission of the printing and dyeing industry is reduced, and energy saving and environment protection are facilitated.