35results about How to "Enhanced mesh structure" patented technology

The preparation method for phenolic resin modified by epoxy vegetable oil comprises: putting thephenol, formaldehyde and nontoxic acid catalyst into a reactor; controlling temperature and holding for 1-8h; cooling to room temperature to obtain the coarse phenolic resin; transferring the coarse product into vacuum distillation kettle to dewater for refine; adding the epoxy vegetable oil, phenolic resin and faintly-alkaline catalyst into the reactor; heating and holding; reacting till the specified range of gelling time; cooling and adding solvent and additive to obtain the target with wide application. This invention has well security and quality with low cost and high efficiency.

The invention discloses controllable clay and cement seepage-proof reinforcement paste. The controllable clay and cement seepage-proof reinforcement paste is mainly prepared from clay raw stock, cement and water, wherein the clay raw stock is mainly obtained by stirring clay and water. A modifier is added in the controllable clay and cement seepage-proof reinforcement paste; the doping amount of the modifier is 1 to 3 percent; the modifier mainly comprises mineral additives, sulfate and bentonite in a mass ratio of a:b:c; and a:b:c is 5:(5-0):(0-5). The product has the advantages of high stability and water flow dilution resistance, controllable setting time, adjustable strength, high antiseepage performance, low cost, environment friendliness and the like.

The invention belongs to the field of food processing, and relates to a production method of a health-care yeast glucan / surimi composite product that removes fishy smell and strengthens the gel. The method includes the following steps: fresh silver carp is cleaned and then "three removals" (removing the head, scales and viscera), and rinsing after the meat is harvested. Centrifuge and drain the fish after rinsing, and chop it into mince in a food conditioner. Forming and gelling are prepared into surimi products. Compared with traditional surimi products, the surimi products produced by the method for making surimi products provided by the present invention have delicate taste, high gel strength, low fishy smell, special smell of yeast glucan, and can significantly It can improve appetite, and also has the health care function of yeast glucan, which can significantly increase the added value of surimi products.

The invention provides a weak gel for a drilling fluid and a preparation method of the weak gel. The weak gel is characterized by being prepared by sequentially adding natural modified plant gel, acrylamide, N,N-dimethacrylamide, a nonionic fluorocarbon surfactant, diacetone-acryloamide and sodium carbonate under normal temperature conditions, adjusting the pH value to be 8-9, introducing nitrogen to deoxidize, adding an initiator, implementing polymerization reaction under radiation of ultraviolet light, and drying, thereby preparing a finished product. The weak gel provided by the invention is good in temperature resistance property and tackification and lifting cutting effect, can be used in a horizontal well to improve the property of the drilling fluid in carrying rock debris, can solve the problem of static sand suspension and dynamic sand carrying in a horizontal well section, is additionally good in computability and is applicable to light slurry and salt water slurry, and a reservoir stratum can be protected and is slightly damaged.

The invention discloses an aluminum-zinc polysilicate composite flocculating agent and application thereof. Sodium silicate solution and excessive sulfuric acid are mixed with each other to prepare polysilicate solution, zinc sulfate and aluminum sulfate solution, polyacrylamide, calcium hydroxide and sodium hypochlorite are sequentially added into the polysilicate solution, and reaction is carried out to obtain the aluminum-zinc polysilicate composite flocculating agent. The aluminum-zinc polysilicate composite flocculating agent and the application have the advantages that the aluminum-zinc polysilicate composite flocculating agent can be applied to the field of water treatment, accordingly, excellent effects of removing colors, turbidity and carbon can be realized, coagulated floc particles are large, the aluminum-zinc polysilicate composite flocculating agent is high in floc settling velocity, excellent net capturing effects can be realized, and the excellent effects of removing the colors and the turbidity can be realized; raw materials for the aluminum-zinc polysilicate composite flocculating agent can come from wide sources, the aluminum-zinc polysilicate composite flocculating agent is easy to prepare and can be widely applied to the field of wastewater from dyeing and printing and papermaking industries and the like and the field of advanced municipal sewage treatment, and the like.

The invention relates to a preparation method of acrylamide cross-linked urea glyoxal resin wet strength agent. The preparation method is characterized by comprising the following steps: mixing glyoxal and urea as per mole ratio of 1 to 2: 0.3 to 1, regulating pH value to be 1.5 to 3 with acid, reacting for 2.5 to 6 h under the temperature of 35 DEG C to 75 DEG C, cooling, regulating pH value to be neutral with alkali after adding the glyoxal with the adding amount of moles of 15% to 40 % of first glyoxal weight, reacting for 1 to 2 h under the temperature of 20 DEG C to 35 DEG C, regulating pH value to be neutral so as to obtain urea resin, adding cross-linking monomers and cation monomers into the urea resin (the mole ratio of the cross-linking monomers, the cation monomers and the urea is 0.5 to 3.5:0.2 to 2:5, reacting for 1 to 2 h under the temperature of 50 DEG C to 80 DEG C, and adding deionized water for dilution until the solid content occupies 12% of total content so as to obtain acrylamide cross-linked urea glyoxal resin wet strength agent. The invention has the benefits that formaldehyde and organic halide are not added during preparation process, so that damage to environment and human health is eliminated.