44results about How to "Extend hardening time" patented technology

The invention provides a binder for installation of a thermal insulation decorative plate. The binder comprises, by weight, 25 to 40% of cement, 25 to 45% of silica sand of 20 to 40 meshes, 8 to 15% of silica sand of 40 to 70 meshes, 3 to 8% of silica sand of 70 to 140 meshes, 0 to 5% of talcum powder, 0 to 5% of ground calcium carbonate powder, 2 to 8% of dispersible latex powder, 0 to 1% of cellulose ether, 0 to 0.6% of plant fibers and 0 to 0.5% of a thixotropic agent. The binder for installation of the thermal insulation decorative plate has the characteristics of high adhesion, strong anti-sliding capability, strong initial adhesion, long construction operation time and difficult skinning, effectively solves the problems produced in thermal insulation decorative plate pasting installation, guarantees enough adhesion between a thermal insulation decorative plate and a wall surface, and improves safety of the thermal insulation decorative plate in engineering application.

The invention discloses a big cake formula, wherein a sesame oil big cake formula includes the following raw materials in parts by weight: 62% of glutinous rice flour, 25% of white granulated sugar, 8% of maltose, 2-2.5% of vegetable oil, 5% of drinking water, 1.5% of refined sesame oil, 0.03% of sodium dehydroacetate, and 0.5% of glycerol monostearate. According to the big cake formula and a production process thereof, the refined sesame oil in the sesame oil big cake preparation formula is 1.5%; pumpkin flour in a pumpkin big cake preparation formula is 3-3.5%; black sesame in a sesame big cake preparation formula is 2%; moreover, a certain proportion of jam prepared by apple is added in the big cake preparation process, the apple jam, pectin and syrup are fused together into glutinous rice, and the pectin has a condensation effect, can prolong the time keeping good mouthfeel in shelf life to 15 days, and greatly prolongs the hardening time of the big cake.

The invention relates to the technical field of injection molding, and discloses an injection mold device. The injection mold device comprises an injection molding gun head, a fixed mold, a movable mold and a hydraulic cylinder; the outer wall of the right end of the injection molding gun head is fixedly connected with a plastic guide barrel, and the inner walls of the top face and the bottom faceof the plastic guide barrel are each fixedly connected with a spring A; clamping blocks are fixedly connected with the ends, away from the inner wall of the plastic guide barrel, of the two springs A; the face, away from the injection molding gun head, of the plastic guide barrel is fixedly connected with the fixed mold; insertion holes A are formed in the upper end and the lower end of the sideface of the fixed mold correspondingly; each inserting hole is provided with an inserting rod in a sleeved mode, and the left ends of the two inserting rods are fixedly connected with the movable mold; and mold cavities are formed in the faces, corresponding to the movable mold, of the inserting rods. A circulating cooling pipe is separated from the fixed mold and the movable mold through injection molding pressure, the problem that resistance is increased and even blockage is caused due to raw material cooling in the injection molding process is avoided, and the circulating cooling pipe is automatically connected with the fixed mold and the movable mold after injection molding is completed, so that cooling molding of the raw materials is ensured.

The invention relates to the technical field of injection molding, and discloses an injection mold device, which includes an injection gun head, a fixed mold, a movable mold and a hydraulic cylinder. The inner wall of the bottom surface is fixedly connected with a set of springs A, and the ends of the two sets of springs A away from the inner wall of the plastic guide tube are fixedly connected with a clamp block. The side of the plastic guide tube away from the injection gun head is fixedly connected with the fixed mold, and the upper and lower ends of the fixed mold side Both sockets A are provided, and inserting rods are sleeved in the two sockets A. The left ends of the two inserting rods are fixedly connected to the movable mold. The corresponding sides of the inserting rod and the movable mold are provided with mold cavities. The pressure makes the circulating cooling pipe separate from the fixed mold and the movable mold, avoiding the cooling of the raw material during the injection molding process, resulting in increased resistance or even blockage, and the circulating cooling pipe is automatically connected to the fixed mold and the movable mold after the injection molding is completed, so as to ensure the cooling of the raw material forming.

The invention provides a manufacturing method for an elastic composite material, which comprises the following steps of: mixing a carbon material with a silicon rubber material, and uniformly dispersing the carbon material in the silicon rubber material to form a mixed compound; mixing the mixed compound with a (Bis(triethoxysilylpropyl)tetrasulfide) and a cross-linking agent to form a mixture; and heating the mixture to harden it to obtain the elastic composite material. The elastic composite material produced by the above method has improved durability.

The present invention is the process and apparatus for producing composite thin stone slab with two glass reinforced cement (GRC) sides. The production process includes setting thin stone slab inside mold with frame on a vibration stage; dressing GRC slurry and vibrating to densify the GRC slurry; mounting vacuum sucker to the mold and starting the vacuum dewatering machine to dewater GRC slurry for densifying and hardening; letting stand for curing; turning to the other side; dressing GRC slurry, vibrating, vacuum dewatering, curing and demolding; wet curing in curing box; splitting into two thinner stone slabs; trimming and decorating. The production apparatus includes vacuum dewatering machine set and vacuum dewatering stage.

The patent of the present invention provides a composite spherical shell of a spherical robot. The spherical shell composite structure includes a rigid matrix shell and a flexible coating layer. The rigid matrix shell is a structural fiber-reinforced composite material, which is composed of reinforcing fibers and a thermosetting resin matrix. Honeycomb stiffeners are arranged on the inner surface of the rigid matrix shell. The stiffener material is thermosetting resin, which can be combined with the rigid matrix shell. Integrated thermoforming; flexible coating layer adopts copolymer elastomer material. The lightweight composite spherical shell has high specific strength, specific stiffness, rolling friction coefficient, impact energy dissipation coefficient and quick repair function. The spherical shell and the corresponding spherical robot are used as an open automatic control platform, and a variety of functional spherical robots can be developed on the basis of the spherical robot composite spherical shell.

The invention discloses an early strength agent and its application in concrete materials. The early strength agent comprises the following components in parts by weight: 30-50 parts of magnesium fluorosilicate, 14-20 parts of lithium sulfate, sulfuric acid 15-25 parts of sodium, 15-25 parts of sodium nitrite, 55-75 parts of pre-hydrated cement particles. The preparation method of the prehydrated cement granules is as follows: in parts by weight, mix 80-120 parts of cement and 20-40 parts of water evenly, perform maintenance for 28-30 days after granulation, then ball mill, and sieve through 200-300 mesh , to obtain prehydrated cement particles. The present invention can significantly improve the performance of the early strength agent by self-made prehydration cement particles and combination with other components, accelerate the hardening time, and have a significant effect on the strength enhancement of the cement base material in the later stage, without shrinkage, and meet the service strength of concrete and durability requirements.

The invention discloses glue for a 3D (Three-Dimensional) printer and a preparation method thereof. The glue comprises the following components in parts by weight: 55-75 parts of deionized water, 12-18 parts of ethylene glycol, 15-20 parts of isopropanol, 10-13 parts of triethanolamine, 3-6 parts of nonyl phenol polyoxyethylene ether, 3-6 parts of polyvinyl alcohol and 0-5 parts of industrial dye. The preparation method comprises the following steps: stirring; standing; deoxidizing; filtering and the like. The glue disclosed by the invention shortens the curing time of a printed object, and isopropanol enhances dissolution of polyvinyl alcohol, so that the viscidity among layers is enhanced, the tensile strength and hardness of the printed object are enhanced, the hot wind curing and hardening time is shortened, the efficiency is improved and the energy consumption is reduced. The method provided by the invention is simple and strong in operability.

The invention relates to a siliceous plastic refractory and a preparation method thereof. According to the technical scheme, the method comprises the steps that under the water bath condition, urea resin, polyacrylamide, carboxymethylcellulose, polyethylene glycol 200 and water are stirred to obtain a binding agent; quartzite, silica powder, silicon carbide and dolomite are mixed and ground till the granularity is not larger than 80 micrometers, under the condition that the pressure is 20-30 MPa, compression molding is performed, thermal treatment is performed at the air atmosphere under the temperature of 1,300-1,450 DEG C, materials obtained after thermal treatment are crushed and screened to obtain a material A with the granularity being 3-4 mm, a material B with the granularity being 1-2 mm, a material C with the granularity being 0.088-0.5 mm and a material D with the granularity being not larger than 80 micrometers; the four materials with the different granularities and silicon nitride powder are mixed to obtain a mixed homogenous material; the binding agent is added into the mixed homogenous material to be mixed to be uniform, and the siliceous plastic refractory is obtained. The siliceous plastic refractory has the advantages of being low in cost and simple in technology, and the obtained siliceous plastic refractory is long in hardening time and large in volume density and strength.