41results about How to "Improved gelling ability" patented technology

The invention discloses a super-hydrophobic surface formed on the basis of dihydrazide derivative molecular gel. A dihydrazide derivative BPH-8 with relatively high gelatinization performance is taken as a gelator, and the surface appearance of a material is controlled in a way of adjusting types and a proportion of solvents, so that the aim of regulating the hydrophobicity is fulfilled. The super-hydrophobic surface has the advantages of use of simple raw materials, simple experiment conditions, high yield and low cost. The prepared super-hydrophobic surface is uniform, dense and flat.

Here is provided a method of producing a starch gel-containing food, the method comprising the steps of: treating starch granules with an enzyme at a temperature of about 10° C. or higher and about 70° C. or lower to obtain an enzyme-treated starch; mixing a food material, the enzyme-treated starch and water to obtain a mixture; heating the mixture thereby gelatinizing the enzyme-treated starch in the mixture; and cooling the mixture containing the gelatinized enzyme-treated starch thereby gelling the starch to obtain a starch gel-containing food, wherein the enzyme is selected from the group consisting of amyloglucosidase, isoamylase, α-glucosidase, α-amylase having a characteristic capable of improving a gel forming ability of a starch, and cyclodextrin glucanotransferase.

The invention relates to the field of leather care, in particular to an environment-friendly nitrocotton leather brightener and a preparation method thereof. The environment-friendly nitrocotton leather brightener of the present invention comprises the following components in parts by weight: 10 to 30 parts of nitrocellulose , 5-20 parts of alkyd resin, 2-20 parts of melamine formaldehyde resin, 35-65 parts of organic solvent, 6-12 parts of plasticizer, 5-30 parts of auxiliary agent, 1-10 parts of castor oil. The nitrocotton leather brightener of the invention is energy-saving, environment-friendly, low in price, good in heat resistance, good in use effect and beneficial to prolonging the service life of leather.

The invention discloses bletilla glucomannan self-assembled nano particles, and a preparation method and applications thereof. According to the preparation method, bletilla glucomannan dry powder with a molecular weight ranging from 20 to 150kDa is extracted from bletilla striata tuber, and the bletilla glucomannan self-assembled nano particles are obtained via a plurality of steps. According to the bletilla glucomannan self-assembled nano particles, the porosity, the gelling capacity, and the stability of bletilla glucomannan are maintained and improved; no toxic or side effect is caused; the bletilla glucomannan self-assembled nano particles possess excellent biocompatibility, is capable of stopping bleeding, promoting wound healing, and stopping overflow of exudate, and can be used for tissue haemostasis, tissue sealing, and tissue bonding in surgical fields such as general surgery department, orthopedics department, cardiothoracic surgery department, neurosurgery department, and gynaecology and obstetrics.

The invention discloses a preparation method and application of a medium / low-temperature environment-friendly crosslinking agent, belonging to the technical field of oilfield chemistry. The preparation method of the crosslinking agent comprises the following steps: adding an aldehyde solution into a reaction vessel, and regulating the pH value of the solution to 8-9; adding a stabilizer, and performing uniform stirring; and finally, adding melamine, performing heating to 70-75 DEG C, and performing a sufficient reaction while keeping at such temperature, thereby obtaining the medium / low-temperature environment-friendly crosslinking agent, wherein the mass percents of the aldehyde solution, stabilizer and melamine are respectively 20-25%, 20-25% and 50-60%. When being used for preparing a crosslinked polymer gel profile control agent, the medium / low-temperature environment-friendly crosslinking agent prepared by the method can form a gel at 40-60 DEG C, and the gel formation time is controllable within the range of 12 hours to 7 days; the formed gel system is stable, and the gel viscosity can reach 8000 mPa.s or above; and the crosslinking agent is safe and nontoxic, has small pollution to the oil reservoir, and satisfies the requirements for safety and environment friendliness in the production process.

The invention discloses a waste crop bast raw material resource utilization method. The waste crop bast raw material resource utilization method includes the steps that S1, an ionic type extraction agent is used for extracting the waste crop bast raw materials, and a pectin solution and bast fibrous residue can be obtained after separating solid and liquid; S2, ethyl alcohol is added after the pectin solution is condensed, static settlement is carried out after stirring, washing and drying are carried out, and finished pectin can be obtained; S3, acidizing is acted to the bast fibrous residue,and glass fiber is added to mix evenly, a binding agent and a curing agent are added, and fiberboards are obtained by compressing. According to the waste crop bast raw material resource utilization method, the bast fibrous residue is used for preparing the fiberboards after the pectin is extracted, the waste crop bast raw materials can be recycled to the maximum, the obtained pectin is green foodwithout pesticide pollution, transgenic ingredients are not contained, and the heat stability is high; and the performance of the fiberboards produced by the bast fibrous residue replacing portion ofthe glass fiber, the economic benefit of integrated utilization is better, and the practical significance is important.