8results about How to "Curing time controllable" patented technology

The invention relates to the field of drilling engineering, and discloses resin cement paste as well as a preparation method and application thereof. The resin cement paste comprises the following components in parts by weight: 100 parts of cement, 1-100 parts of epoxy resin, 1-80 parts of a curing agent, 1-100 parts of a framework material-I, 1-100 parts of a framework material-II, 0.1-40 parts of a thickening time control agent, 0.1-40 parts of a toughening agent, 1-40 parts of a dispersing agent, 0.1-20 parts of a fluid loss agent, 0.1-40 parts of a defoaming agent, 1-100 parts of water and 0-100 parts of a density regulator. The resin cement paste is prepared by selecting the components according to the specific parts by weight, the rheological property of the paste is good, well cementation construction is easy, and the obtained resin cement paste is higher in compressive strength and smaller in elastic modulus and can be used for a long time at the working temperature of 45-95 DEG C.

The invention relates to a net-free thin-spraying supporting material and a preparation method thereof, and belongs to the technical field of coal mine tunnel surface supporting, and the net-free thin-spraying supporting material is obtained by mixing a component A, a component B and a component C according to the mass ratio of (1-3): 1: (1-3); wherein the component A is prepared from the following raw materials: a polymeric monomer, a functional monomer, a plasticizer, a thickening agent, a toughening agent, reinforced resin, a stabilizer and a reducing agent; the component B is prepared from the following raw materials: a polymeric monomer, ABS, a functional monomer, a plasticizer, a thickener, a flexibilizer, a stabilizer and an initiator; the component C is prepared from the following raw materials: a coupling agent, isocyanate, polyol, a reactive diluent, nano silicon dioxide particles, a defoaming agent, a catalyst, an auxiliary agent and polyaspartic acid ester. The net-free thin spraying support material provided by the invention has relatively high bonding strength, tensile strength, breaking strength and elongation at break and excellent flame retardant property.

The invention provides an environment-friendly composite salt grouting material, and belongs to the technical field of grouting material preparation. The environment-friendly composite salt grouting material is prepared from the following components in parts by mass: 180 to 200 parts of acrylic acid, 200 to 210 parts of methacrylic acid, 80 to 100 parts of magnesium oxide, 150 to 180 parts of calcined kaolin, 220 to 250 parts of calcium carbonate, 20 to 30 parts of N-hydroxyethyl acrylamide, 6 to 10 parts of butyl acrylate, 0.5 to 1 part of hydroquinone, 12 to 15 parts of diethylenetriamine, 2 to 5 parts of a de-foaming agent and 3 to 7 parts of a dispersing agent. The obtained environment-friendly composite salt grouting material is non-toxic, does not damage the health of users and is environment-friendly, and the adopted acid and alkali have good chemical resistance, are not affected by biological invasion, and are extremely low in viscosity and good in permeability.

This invention discloses a method for preparing viscous bone cement, comprising the following steps: S1: mixing a silk fibroin solution with a natural polymer solution to obtain a mixed solution; S2: processing the mixed solution obtained in step S1 to obtain powder A; S3: selecting a calcium-containing inorganic compound as a basic calcium salt, combining it with calcium supplement raw materials to adjust the calcium-to-phosphorus ratio to 1.67, and mixing the basic calcium salt with the calcium supplement raw materials to obtain calcium salt powder B; S4: mixing powder A obtained in step S2 with calcium salt powder B obtained in step S3 according to the mixing ratio to obtain solid powder C; this invention uses tricalcium phosphate and calcium dihydrogen phosphate as the curing substrate, introducing biodegradable silk fibroin and gelatin into the curing system, and the gelatin and silk fibroin carrying positive and negative charges respectively, and their electrostatic interaction giving them viscosity, providing a viscous substrate.

A kind of gel material for reducing bladder stone formation and its preparation method and application, the raw materials of the gel material include temperature-sensitive component Pluronic F127, photo-crosslinking component methacrylated gelatin and active functional ingredient cerium dioxide nanoparticles.The gel material is liquid at low temperature, which is convenient for perfusion into bladder through catheter;It quickly changes into physical gel at body temperature, realizing in-situ forming;Then it occurs photo-crosslinking through ultraviolet irradiation, forming chemical crosslinking gel with high mechanical strength and good stability, which can resist urine flushing and realize long-term residence.Loaded cerium dioxide nanoparticles continuously remove reactive oxygen species in stone formation microenvironment by simulating catalase and superoxide dismutase activity, thereby inhibiting the nucleation, growth and aggregation of crystals.The material has excellent biocompatibility, simple preparation method, can significantly reduce bladder stone formation, and has broad application prospect in preventing postoperative recurrence of bladder stone and conservative treatment.

The present invention provides a method for continuously preparing titanium and titanium alloy wire materials with a short process, which relates to the technical field of preparing titanium and titanium alloy wire materials. The preparation method includes powder preparation, slurry preparation, wire blank forming, wire blank drying, wire blank coating, degreasing sintering, cold drawing and post-treatment carried out in sequence. Among them, the titanium and titanium alloy extrusion slurry is poured into the slurry tank of a screw extruder, and an ultraviolet light source or a heat source is equipped at the die opening of the screw extruder. The slurry is extruded through the die opening and in-situ solidified into a wire blank under the action of the light source or the heat source. By matching continuous production equipment with the technological processes of screw extrusion molding, degreasing sintering and cold drawing, the present invention avoids the high-temperature melting process of the traditional casting-drawing process and the complex processes of multi-pass hot rolling-drawing, realizes the short-process continuous and controllable preparation of titanium and titanium alloy wire materials, has high flexibility in the design of its composition and diameter, strong stability, wide applicability, low cost and excellent performance, and is very suitable for large-scale industrial production.

This invention relates to a nano-metakaolin-modified hydraulic lime-based composite material and its preparation and application. The composite material comprises natural hydraulic lime and nano-metakaolin dispersed in the natural hydraulic lime, wherein the mass ratio of natural hydraulic lime to nano-metakaolin is (60-90):(10-40). The nano-metakaolin-modified hydraulic lime-based composite material of this invention exhibits controllable dispersibility and fluidity in the slurry after mixing with water. It also demonstrates good rock compatibility, low soluble salt content, controllable curing time, suitable post-curing strength, low permeability, and low shrinkage and expansion rate. The presence of a repair agent can specifically enhance the additional protective performance of the reinforcement material. It possesses high applicability, safety, and durability for the protection of stone cultural relics, without causing derivative damage.

The invention relates to a pressure injection fluid expansion curing hole-protecting anti-sloughing pumping-keeping method, which comprises the following steps of: injecting a hole-protecting foaming fluid material into a drill hole in a manner of withdrawing a rod while performing pressure injection, and after the hole-protecting foaming fluid material is completely cured, realizing the anti-sloughing effect of the drill hole; the preparation process of the hole-protecting foaming fluid material comprises the following steps: mixing water, polyether polyol, polyisocyanate, triethylene diamine, polyoxyethylene alkyl ether, fatty acid alcohol amide, tetramethylethylenediamine, polysorbate and solid filler according to a certain proportion, and then stirring at normal temperature for 5-10 minutes; according to the method, the construction process is simpler and more convenient, 48 hours can be saved at most compared with traditional cement paste material hole sealing, consumed time is less, efficiency is high, and flexibility is higher; and meanwhile, the problems that the sieve tube is difficult to lower and the hole protection effect is poor in the hole protection of the traditional PVC perforated sieve tube are solved.