47results about How to "Low foaming rate" patented technology

The invention provides a drilling fluid lubricant prepared from waste plant oil and a preparation method thereof. The lubricant is composed of the following raw materials in parts by weight: 70 to 80 parts of waste plant oil, 10 to 20 pats of lower alcohols, 1 to 5 parts of surfactant, and 1 to 5 parts of high temperature resistant processing agent. The preparation method comprises the following steps: step a, carrying out a pretreatment on raw materials: removing impurities from waste plant oil; step b, carrying out esterification conversion: adding lower alcohols and the waste plant oil preprocessed in step a into a reactor with/without a catalyst to carry out esterification reactions or ester exchange reactions, wherein the reaction temperature is 60 to 120 DEG C, and the reaction time is 3 to 8 hours; step c, refining and separating the reaction products: precipitating and separating the reaction products obtained in the step b, and then refining the reaction products to obtain a refined product; step d, carrying out performance improvement: adding the surfactant and the high temperature resistant processing agent so as to obtain a finished product.

This invention relates to a large densed zircon overflow bricks containing TiO2 weighting 0.2-1.2% characterizing that the large densed zircon overflow brick is 1500-3100mm long, 100-600mm thick and 600-1000mm wide, which applies vacuumization first and molding later and rising and lowering the temperature slowly thus to overcome crack during the process of producing said bricks and produce overflow bricks used in the production system of liquid crystal glasses.

A flight vehicle radome according to the present invention has a shape that covers radio equipment installed in a flight vehicle. The flight vehicle radome is formed of a sandwich panel structure in which a core member (30) resulting from foaming and compositing of a heat-resistant resin (32) and insulating reinforcing fibers (31) is sandwiched between skin members (20) made of a fiber reinforced material being a composite of quartz cloth (20) and a heat-resistant resin (22).

The invention discloses a high polymer grouting reinforcement material which comprises a component A and a component B. The component A comprises 100-120 parts of isocyanate, 3-5 parts of plasticizers, 0.5-1.5 parts of glycerol and 0.4-1.0 part of foam stabilizers. The component B comprises 60-70 parts of polymer polyol, 25-45 parts of inert diluents, 20-30 parts of flame retardants and 0.5-1.0 part of catalysts. The high polymer grouting reinforcement material is high in curing reaction speed, adjustable in curing time and low in curing reaction heat release, the possibility of smoldering and explosion of cured coal and rock masses can be greatly reduced when the high polymer grouting reinforcement material is applied to coal mine grouting reinforcement, foaming rate is low, foam is uniformly distributed, solids can reach 45-60MPa, engineering construction requirements are completely met, and engineering safety is guaranteed. Preparation steps are simple, operation is facilitated, and practicability is high.

The invention discloses a gas extracting drilling solid-liquid two-phase hole sealing device. The gas extracting drilling solid-liquid two-phase hole sealing device comprises a first capsule bag, a second capsule bag, a third capsule bag, a primary grouting pipe and a secondary grouting pipe, a first hole sealing section is arranged between the first capsule bag and the second capsule bag, and a second hole sealing section is arranged between the second capsule bag and the third capsule bag; and an explosive valve located in the first hole sealing section is formed in the primary grouting pipe, the other end of the secondary grouting pipe is located in the second hole sealing section, and is in communication with the second hole sealing section through a second one-way valve. The inventiondiscloses a gas extracting drilling solid-liquid two-phase hole sealing technology at the same time, a network is connected to perform extracting after the first hole sealing section is subjected tosolid-phase hole sealing, periodic detection of gas extracting concentration is carried out to an extracting drilling hole of which the solid-phase extracting is completed, liquid-phase sealing of thesecond hole sealing section is perform on an extracting drilling hole with gas leakage, and then extracting can be continued. According to the gas extracting drilling solid-liquid two-phase hole sealing device and technology, liquid-phase hole sealing operation can be carried out to an extracting drilling hole with poor hole sealing and the gas leakage, periodic maintenance can be carried out tothe liquid sealing effect, and extracting drilling hole is prevented from densified cumbersome construction.

A microcellular thermoplastic polyurethane foamed sheet with a high foaming ratio includes components of: TPU with 70˜100 parts by weight, and polydimethylsiloxane with 0˜30 parts by weight. The present disclosure has the following advantages: because the supercritical fluid has a relatively high solubility in the polydimethylsiloxane while the polydimethylsiloxane has a relatively low interfacial tension, mixing a small amount of polydimethylsiloxane into the TPU significantly facilitates the diffusion speed of the supercritical fluid in the TPU and shortens the diffusion equilibrium time of the supercritical fluid in the TPU. In addition, a method of manufacturing a microcellular thermoplastic polyurethane foamed sheet with a high foaming ratio is further provided.

The invention aims to provide a high-performance polyether ether ketone foamed material with high-temperature resistance, corrosion resistance and high mechanical strength. The polyether ether ketonefoamed material comprises the following raw materials in parts by mass: 85-95 parts of polyether ether ketone granules, 3-6 parts of foaming agents and 3-8 parts of nucleating agents, wherein the foaming agents are supercritical carbon dioxide and phenyl tetrazole, and the nucleating agents are polyimide, aluminum oxide and silicon dioxide. The preparation method provided by the invention is simple, the production period is short, the production efficiency is high, and the preparation method can be used for large-scale commercial production; the glass transition temperature and the melting temperature of the prepared polyether ether ketone foamed material have little difference with the glass transition temperature and the melting temperature of unformed polyether ether ketone resin, but through the introduction of a microporous structure, the weight of the prepared polyether ether ketone foamed material is reduced by 15-35%, so that the raw material consumption can be reduced, the product weight can be reduced, and the cost is saved; the foamed material provided by the invention has the performance of high-temperature resistance, corrosion resistance, high mechanical strength andthe like, and thus can be applied to the fields such as national defense, military industry, aerospace and the like which have harsh use environments,.

The invention relates to a soymilk and a preparation method thereof, and belongs to the field of food processing technology. The soymilk comprises the following raw materials in parts by weight: 60-70 parts of soybeans, 30-40 parts of edible sugar, 2-3 parts of edible acid, 30-40 parts of fruit concentrates, 3-4 parts of an opacifier, 2-3 parts of an acidity regulator, 0.5-1 part of edible essence, 0.01-0.05 part of an edible sweetening agent, 0.1-0.5 part of an antioxidant, 0.3-0.6 part of a thickening agent and the balance of water; the total amount reaches 1000 parts. According to the invention, the soymilk has the following benefits: the prepared soymilk is fragrant, pure and mild in taste, and smooth but not greasy, and has very high nutrition value.

The invention relates to an organic, heat-insulating and flame-retardant material. The organic, heat-insulating and flame-retardant material comprises flame-retardant layers and heat-insulating layers, wherein first-stage heat-insulating layers are filled between first-stage flame-retardant layers and second-stage flame-retardant layers, a second-stage heat-insulating layer is filled in the second-stage flame-retardant layers, the heat-insulating layers are made from a heat-insulating material, a flame retardant is attached to the surfaces of the flame-retardant layers, and the heat-insulating material is prepared from EPS (Expandable Polystyrene), HIPS (High Impact Polystyrene), GPS (General Polystyrene) and PP (Polypropylene). According to the organic, heat-insulating and flame-retardant material, the foaming rate is low, the heat-insulating effect is strong, and the coefficient of heat conductivity is small; the heat-insulating material adopted by the organic, heat-insulating and flame-retardant material can be obtained through recovering polystyrene materials, so that polystyrene is recycled, and the pollution to environment is reduced.

The invention discloses fried sesame slices and a production method of the fried sesame slices. The method includes the following steps: step 1, making dough into small dough bodies with a dough rounder and a dough divider after making the dough from raw materials proportioned by weight with a dough maker, step 2, covering the small dough bodies with fermentation cloth to ferment the small dough bodies, step 3, pressing the small dough bodies into dough pieces with a dough presser, step 4, drying the dough pieces with a roaster, step 5, heating camellia oil with a fryer to fry the dry dough pieces, step 6, scooping up the dough pieces when both faces of the dough pieces become golden yellow through frying, step 7, obtaining a fried sesame slice product when the dough pieces are naturally cooled, and step 8, packing the fried sesame slice product in a sealing mode or storing the fried sesame slice product in a sealed container. According to the fried sesame slices and the production method of the fried sesame slices, reasonable raw material types and proportions and the reasonable thickness and diameter of the dough pieces are developed, the proportion range and specification are clear and definite, the scientific and reasonable production method is used, and therefore industrial production of the fried sesame slices is realized; the fried sesame slice product which is high in quality, novel in taste, rich in nutrition and beneficial to human health is obtained.

In order to prevent foaming ratio from being degraded, there is provided a high expansion foam fire-extinguishing system (B) including: a foam generator body (1) formed to a tubular shape; a foam forming screen (2) arranged at a distal end (1a) side of the foam generator body (1); an emission nozzle (3) arranged at a back end (1b) side of an interior of the foam generator body, for radiating a foam solution (W) in an emission pattern (WP) that spreads in a conical shape towards the foam forming screen (2); and an intermediate screen (4) arranged between the foam forming screen (2) and the emission nozzle (3), in which the intermediate screen (4) is arranged in a liquid droplet speed regulating region from a landing position (P0) at which an outer periphery of the emission pattern (WP) hits an inner wall (1f) of the foam generator body to a limit position (P1) at which liquid droplets can pass through a mesh of the intermediate screen (4).

The invention provides a water blocking prevention agent based on anion-cation pair effect, which is composed of an anion-cation pair surfactant composition, a zwitterionic surfactant, short-chain alcohol, a defoaming agent and water, and the anion-cation pair surfactant composition is compounded by an anionic surfactant and a cationic fluorocarbon surfactant. According to the present invention, by using the action of the anion-cation pair between the anionic surfactant and the cationic fluorocarbon surfactant, the system has low surface/interface tension performance, the interface tension reaches 10 <-3 > mN/m, the minimum surface tension reaches 18 mN/m, and the water blocking prevention agent further can improve the wettability of the stratum surface to the hydrophobic and oleophobic amphiphobic direction, such that the water blocking prevention effect is significantly improved, and the water blocking prevention effect is significantly improved. Filtrate flowback can be effectively increased, the gas/oil phase permeability is improved, and the water blocking damage of a reservoir is remarkably reduced. The foaming rate of the water blocking preventing agent is low and is smaller than 10%, and the water blocking preventing agent can meet the use requirements of operations such as oil field drilling, well completion, well repair, water injection and recovery efficiency improvement.

The present invention provides a dental gypsum or gypsum composition with low expansion ratio and high strength, its preparation process, use method and application. The invention uses green additives, has few additives, and has low production cost, and can simply and effectively reduce the expansion coefficient of general dental gypsum materials to a very low level. At the same time, it has comprehensive advantages such as strong operability, adjustable setting time, good mechanical properties, and stable curing performance, which better solves the difficulty of denture restoration in the oral cavity, poor adhesion, fulcrum, and insufficient retention force. Application problems such as long clinical adjustment time ensure the effect of denture restoration.