47results about How to "Difficult to volatile" patented technology

The invention relates to the technical field of polyvinyl chloride composite materials, in particular to a high temperature resistant environment-friendly polyvinyl chloride (PVC) modified material and a preparing method thereof. The modified material comprises by weight, 80-120 parts of PVC resin, 30-70 parts of filling agent, 31-70 parts of plasticizer, 1-10 parts of hot-resistant modifying agent, 1-10 parts of fire retardant, 1-10 parts of stabilizing agent, 5-15 parts of impact modifier and 0.2-2 parts of lubricating agent. Each raw material is weighed by weight and mixed after being stirred; the raw material is squeezed out of prilling through a double-screw extruder and the modified material is available. The hot temperature resistant performance of the modified material manufactured by the preparing method is fine; the maximum usage temperature can reach up to 135 DEG C. The modified material is environment-friendly and has the advantages of high intensity, good flame retardant effects, strong compression performance and toughness, excellent processing performance and better comprehensive performance. The preparing method of the high temperature resistant environment-friendly polyvinyl chloride (PVC) modified material has the advantages of being simple in process, convenient to control and operate, stable in quality, and high in production efficiency. In addition, the preparation method of the high temperature resistant environment-friendly polyvinyl chloride (PVC) modified material can be used for a large-scale industrial production.

The invention discloses a lasting and effective antistatic polyolefin composite material. The lasting and effective antistatic polyolefin composite material comprises, by weight, 70-99 parts of polyolefin resin, 0-30 parts of packing, 0-6 parts of compatilizer, 0.5-5 parts of ionic liquid antistatic agent and 0.2-0.5 part of anti-oxygen. The invention further discloses a preparation method of the lasting and effective antistatic polyolefin composite material. The lasting and effective antistatic polyolefin composite material is low in additive amount of the antistatic agent, superior in antistatic performance, the surface resistance can reach 108-1,011 ohm, and the lasting and effective antistatic polyolefin composite material is little influenced by the temperature and humidity, is lasting in antistatic performance and is capable of being applied to various fields with antistatic and dust-free requirements.

The pesticide composition consists of emamectin benzoate 0.1-5 wt%, effective component B 0.2-30 wt%, synergist 0.1-5 wt%, emulsifier 5.0-20 wt%, and solvent 45-90 wt%. The effective component B is chlorfenapyr, diafenthiuron, fipronil, beta-cypermethrin, cyhalothrin or their any mixture. The present invention can prevent and kill several kinds of pests, and this can reduce pesticide consumption, lower agricultural cost and reduce pollution.

The invention belongs to the technical field of monocrystalline silicon wafer tools, and particularly relates to a texturization method of a monocrystalline silicon wafer. The method comprises the following steps: 1) preparing atexturizationadditive; 2) preparing atexturization solution; and 3) putting the monocrystalline silicon wafer into thetexturization solution prepared in the step 2), and carrying out texturization at 80-88 DEG C for 600-1200 seconds. The method has excellent texturization effect; and the pyramids on thetexturizedsurface have smaller size and narrower distribution, and can reduce the light reflection, thereby enhancing the photoelectric conversion efficiency of the assembled solar cell.

The present invention relates to a permanent antistatic polyvinylidene fluoride (PVDF) composition and a preparation method thereof. The composition comprises the following components, by weight, 68-99.4% of polyvinylidene fluoride, 0.5-30% of an ionic liquid antistatic agent, and 0.1-2% of other additives. During preparation, polycarbonate, a fluorine-substituted polyolefin additive and an ionic liquid are added to a banbury mixer to carry out melting blending at a temperature of 170-200 DEG C until mixing is uniform, the mixed material processed from the process is subjected to melting extrusion through a twin-screw extruder, and then granulation and drying are performed, wherein extrusion temperatures of various regions of the twin-screw extruder are maintained at a temperature of 160-190 DEG C. The composition has the following advantages that: 1, the product has good transparency and excellent antistatic property, and the antistatic property of the material is less affected by air humidity, and the resulting antistatic property is permanent, 2, the process is simple, processing is convenient, the use amounts of the ionic liquid antistatic agent and other additives are less, and the obtained PVDF composition has excellent mechanical properties, and 3, environmental protection requirements are met, the raw materials have characteristics of no toxicity and no harm, and no toxic element exists with chemical analysis.

The invention relates to a permanent antistatic polycarbonate composite and a preparation method thereof. The permanent antistatic polycarbonate composite comprises the following components in percentage by weight: 99%-87.5% of polycarbonate, 0.5% of fluoro-substitution polyolefin additives, 0.5%-10% of antistatic agents and 0.1%-2% of other auxiliary agents. The preparation method comprises the following steps of: firstly placing the polycarbonate, the fluoro-substitution polyolefin additives and ionic liquid into an internal mixer, and melting and blending at 260 DEG C till uniform mixing; and carrying out melt extrusion on a mixed material obtained through the processing of the process through a double-screw extruder, granulating, and then drying. The obtained permanent antistatic polycarbonate composite has the advantages of good product penetrability, excellent antistatic property, less influence of air humidity on the antistatic property of a material, lasting antistatic property, simple process, convenience for processing, small usage amount of the ionic liquid antistatic agents and the other auxiliary agents and less influence on the self impact resistance and formability of the polycarbonate, meets the requirement for environment protection, is nontoxic and harmless in raw material and is discovered that no toxic element exists through chemical analysis.

The invention provides a device and method for measuring the specific heat capacity and phase change latent heat of a substance. The device comprises a calorimeter component and a sample temperature control component. The calorimeter component comprises a calorimeter. A magnetic stirrer used for stirring a calorimetric liquid in the calorimeter is arranged at the bottom of the calorimeter. A temperature difference thermocouple and a first temperature sensor are arranged in the calorimeter. The sample temperature control component is located above the calorimeter. The sample temperature controlcomponent comprises a thermostatic aluminum block. A platinum resistance thermometer and a tested sample are arranged in the thermostatic aluminum block. A second temperature sensor is arranged on the tested sample. The calorimetric liquid is ethylene glycol. The calorimeter is in a double-layered sleeve structure. According to the invention, the device can accurately measure the specific heat capacity of a solid and liquid and the phase change latent heat of a solid-liquid phase change material; the stability of the device is great; a wide temperature range can be measured; and the device can be used for measuring the specific heat capacity and phase change latent heat of materials in industry and scientific research, and can be used for teaching experiments of energy and power related professional courses.

The invention discloses a method for extracting astaxanthin through an ionic liquid-salt aqueous two-phase system. The method comprises the steps that an ionic liquid aqueous solution is prepared, sothat the mass ratio of an ionic liquid is 2-10%; shrimp shell powder and the ionic liquid aqueous solution are mixed and then subjected to magnetic stirring at the normal temperature; a mixture aftermagnetic stirring is subjected to centrifugal separation, and a rough astaxanthin extraction solution is collected; salt is added to the rough astaxanthin extraction solution, standing is conducted atthe normal temperature to form the ionic liquid-salt aqueous two-phase system, liquid-liquid separation is conducted, and an ionic liquid enrichment phase is collected for obtaining an astaxanthin concentration solution; water is added to the astaxanthin concentration solution, standing is conducted, so that astaxanthin is precipitated, then filtering is conducted, and an astaxanthin precipitateis collected and dried. According to the extraction method, the content of astaxanthin extracted from shrimp shells is high, the extraction method is easy and convenient to implement, the astaxanthincan be extracted in a large scale, the condition is mild, and the method is environmentally friendly.

The invention provides an asymmetrically-arranged heat exchanger. The heat exchanger comprises a collecting pipe, left coil pipes and right coil pipes are distributed on the left side and the right side of the collecting pipe respectively; the heat exchanger is characterized in that the left coil pipes and the right coil pipes are arranged at intervals, one right coil pipe is arranged between every two adjacent left coil pipes, and one left coil pipe is arranged between every two adjacent right coil pipes. The heat exchanger can be used for carrying out reinforcing heat exchange and soot removal at different heights, and the effects of reinforcing heat exchange and removing accumulated dust are achieved.

The invention discloses an oil adsorption material. The oil adsorption material is prepared through a polymerization reaction of polyether polyol, a lipophilic assistant, a responsive flame retardant, a flame retardation smoke suppressor, a responsive antistatic agent, a composite catalyst, diisocyanate, a foam stabilizer and a foaming agent; and the density of the oil adsorption material is 8-20Kg/m<3>, the crude oil adsorption rate is 30-50 times, and the oxygen index is greater than 26%. The oil adsorption material has the advantages of antistatic property, flame retardation, high oil adsorption rate, non-toxicity, no pollution, low cost and onsite foaming. The oil adsorption material can be used to adsorb overflow oil on the water surface as an antistatic flame-retardation oil adsorption material, is especially suitable for emergency treatment of overflow oil on the water surfaces of rivers, lakes and seas, and is also suitable for kitchen range hoods, factory oil-containing exhaust gas recovery devices and other oil waste absorption or recovery occasions.

The invention discloses a heat-preserving, flame-retardant, water-proof and corrosion-resistant functional gel material and a preparation method thereof. The functional gel material is prepared from polyether glycol, epoxy resin, polyisocyanates, water, a reactive flame retardant, a flame-retardant antismoke agent, a compound catalyst, a foam stabilizer and a physical foaming agent serving as raw materials through a polymerization reaction. The gel material has the characteristics of flame retardancy, corrosion resistance, waterproofness, field foaming property and the like, and can be applied in the fields of heat preserving, cold preserving and the like for various pipelines in building wall bodies, cold storage warehouses, central air conditioners, petrifaction, metallurgy and the like.

The invention belongs to the field of sanitary products, and in particular relates to an antibacterial low-foaming laundry detergent and a preparation method thereof. The antibacterial low-foaming laundry detergent of the present invention is made of the following raw materials in parts by weight: 10-30 parts of sodium dodecylbenzene sulfonate, 10-30 parts of coconut oil fatty acid glycol amide, octadecyl dimethyl 15-35 parts of betaine, 30-50 parts of tea saponin, 10-25 parts of sodium citrate, 20-40 parts of antibacterial agent, 1-15 parts of rose essential oil and 70-90 parts of deionized water. The invention also provides a preparation method of the antibacterial low-foaming laundry detergent. The antibacterial low-foaming laundry detergent of the present invention has reasonable formula, good antibacterial effect, strong detergency, low foaming and easy washing, integrates sterilization and cleaning functions, and has good sterilization, antibacterial, energy-saving and environmental protection effects.

The invention discloses a separation and purification method of sweet corn cob polysaccharide. The separation and purification method comprises the following steps of drying and crushing sweet corn cobs, adding normal hexane into sieved sweet corn cobs according to the weight volume ratio being 1: (8 to 12), performing magnetic stirring under the room temperature condition for 1 to 1.5 hours, and centrifuging at the speed of 4000r/min for 10 to 15 minutes; performing hot water extraction and centrifuging on degreased sweet corn cobs under the conditions that the temperature is 100DEG C, the material-to-liquid ratio is 1:(18 to 22), and the time is 2.5 to 3.5 hours, and taking supernate; adding 3 to 5g of ammonium sulfate into a 25mL colorimetric tube according to an isopropanol-ammonium sulfate aqueous two-phase diagram, and then adding sweet corn cob crude polysaccharide liquid; after the ammonium sulfate is completely dissolved, finally adding the isopropanol until the volume is 20ml, so as to form an aqueous two-phase system solution; enabling the aqueous two-phase system solution processed by ultrasonic waves to stand in a separating funnel for phase separation; respectively determining the volumes of upper and lower phases, and the contents of polysaccharides and protein of the upper and lower phases; preserving the polysaccharide solution obtained after separating and purifying two aqueous phases at 4DEG C in a refrigerator for 1 to 2 days; after ammonium sulfate crystals are separated out, dialyzing and performing rotary evaporation and concentration to small volume; finally, performing vacuum freeze drying, thereby obtaining the sweet corn cob polysaccharide.

The invention discloses an environment-friendly rosin solution preparation method. Plasticizer trimellitate and citric acid or epoxy grease serve as a solvent, rosin dissolved in the solvent at the temperature of 80-90 DEG C in a stirred manner to obtain rosin solution, and the rosin solution is safe, environmentally friendly, free from toxicity and taste and difficult to volatilization. The usedsolvent has plasticizing and wetting functions, minimum film-forming temperature and glass transition temperature of a compounded latex are reduced, and deflection and flexibility of a glue film are improved, so that wettability and adhesion of a non-polar material are greatly improved. The rosin solution prepared from the selected solvent has environmental friendliness and a plasticizing function, and blending compound of the latex is facilitated.

The invention discloses N, S-doped carbon quantum dots based on a choline ionic liquid and a preparation method thereof. A choline ionic liquid and a thiobetaine compound are mainly used as raw materials, carbon quantum dots are rapidly prepared by adopting a high-temperature cracking and chemical oxidation method, and the high-purity N, S-doped carbon quantum dots can be obtained after ultrasonic treatment, centrifugation, filtration, dialysis and freeze drying. The preparation method disclosed by the invention is simple and rapid, the raw materials are not easy to volatilize and environment-friendly, and the prepared carbon quantum dots have the advantages of uniform particle size distribution, high fluorescence intensity and good stability and have a good development prospect in rapid analysis and detection.

The invention relates to an air purifying agent by taking long-chain alkane sulfoxide as a main material and a preparation method thereof, which belongs to the field of air purification. According to the method, calcium hypochlorite is employed for oxidizing long-chain alkane thioether to prepare the long-chain alkane sulfoxide, and then a surfactant and water are added to obtain the air purifying agent. The air purifying agent can rapidly and effectively purify air, epically purify PM2.5 and formaldehyde in air, and has certain sterilization effect.

The invention relates to the technical field of slush molding, in particular to a formula of a slush molding material, which is realized by the following technical scheme: the slush molding material mainly comprises the following raw materials in percentage by weight: 21.6-22.5% of dioctyl terephthalate; 2.8 to 3.3 percent of a PVC (Polyvinyl Chloride) viscosity reducer; 3% to 4% of DNTXIB; 1-1.5% of hot oil; 1.8%-2.2% of phenol-free calcium zinc; 0.1 to 0.3 percent of dimethyl silicone oil; 30 to 40 percent of PVC (Polyvinyl Chloride) paste resin; 8 to 13% of PVC paste resin; according to the present invention, the sum of the percentages of all the components is 100%, and the raw materials and the corresponding proportions are matched for use, such that the produced slush molding material has characteristics of no toxicity, good weather resistance, strong stability, color fading resistance, good flexibility, smooth and beautiful surface and easy demolding, and the quality of the slush molding product is ensured.

The invention relates to the field of lubricating liquid, in particular to lubricating liquid for food transporting equipment. The lubricating liquid is prepared from the following raw materials in parts by weight: 2-3 parts of water-soluble chitosan, 2-3 parts of triethanolamine citrate, 0.5-1 part of polyvinylpyrrolidone, 10-14 parts of mint extract, 8-14 parts of carboxylic acid, 2-4 parts of polyalkylene glycol, 3-5 parts of sodium octadecyl polyoxyethylene ether phosphate, 0.3-0.5 part of medical rust, 2-3 parts of a silicone defoamer, 1-2 parts of ethoxylated pentaerythritol tetra (methyl) acrylate, 1-2 parts of ethylparaben, 4-8 parts of sedoheptulose 7-phosphoric acid, and 20-26 parts of simethicone. The lubricating liquid disclosed by the invention is free from toxins, difficult to volatilize, and high in specific heat capacity, has certain heat-conducting properties for heat produced by equipment abrasion, has certain attraction capacity on bacteria and pests, has excellent capacity of killing the bacteria and the pests, has quite significant antirust capacity, and does not have crystal deposition, and the kinematic viscosity of the lubricating liquid is 10-20% higher than that of general lubricating liquid.

The invention provides an anti-ultraviolet PVC film and a preparation method thereof. The anti-ultraviolet PVC film comprises the following components in parts by weight: 90-100 parts of polyvinyl chloride resin, 0.7-2.8 parts of an antioxidant, 0.1-0.5 part of an ultraviolet light absorber, 1-3 parts of color masterbatch, 0.2-2 parts of chlorinated paraffin, 0.5-1.4 parts of a stabilizer, 20-50 parts of a plasticizer, 2-4 parts of chemical modified oil and 1-2.5 parts of chlorinated polyethylene. The ultraviolet light absorber comprises the following components in parts by weight: 10-20 parts of modified nano titanium dioxide, 30-60 parts of a phase transfer agent and 5-15 parts of an activating agent. According to the anti-ultraviolet PVC film disclosed by the invention, all the components in the raw materials of the anti-ultraviolet PVC film react with one another, so that the ultraviolet barrier property and the stability of the anti-ultraviolet PVC film are improved, the anti-aging effect of the anti-ultraviolet PVC film is realized, and the service lifetime of the anti-ultraviolet PVC film is further prolonged; and the preparation method is simple and can be widely popularized.

The invention provides a novel ionic liquid composite medium which is prepared by mixing an ionic liquid solvent and an ionic liquid catalyst. The ionic liquid type solvent is obtained by mixing and reacting thioamide and excessive aluminum halide at room temperature and inert atmosphere, and the ionic liquid type catalyst is obtained by mixing and reacting organic onium halide containing Br-NSTEDacidic functional groups and excessive aluminum halide at room temperature and inert atmosphere. At the same time, the invention also provides a preparation method, application and application methodthereof. In the invention, ionic liquid is used as a novel green medium, and efficient homogeneous catalytic conversion of cellulose to 2,5-dimethylfuran is realized through an electrochemical method, which is beneficial to reducing production cost. In addition, the solution system is nonflammable and difficult to volatilize, the reaction process is simple to operate and has good safety, and thetechnology has broad application prospects.