89results about How to "Suitable for market demand" patented technology

The invention belongs to the technical field of loudspeakers, in particular to a thin type piezoelectric speaker with a novel piezoelectric ceramic wafer structure. The thin type piezoelectric speaker structurally comprises a vibration film, piezoelectric ceramic wafers adhered to the vibration film, electrodes on the surfaces of the piezoelectric ceramic wafers, and electrode leading wires connecting the electrodes with an external circuit, and a frame for restricting the vibration film. With the adoption of structure in which an integral piezoelectric ceramic wafer is changed by a plurality of ceramic wafers distributed regularly, the difficulty in the manufacturing process of the piezoelectric ceramic wafers is reduced, the middle-frequency characteristic of the piezoelectric loudspeaker provided by the invention is adjusted, the distortion of acoustic pressure level is reduced, the phase cancellation of middle-frequency sound radiation in the space is reduced and even eliminated, the levelness of acoustic pressure level frequency response curve of the piezoelectric loudspeaker is greatly improved, and the peaks and valleys of the middle-frequency acoustic pressure level frequency response curve can be eliminated under the situation that the parameters are appropriate. Therefore, the tone quality of the piezoelectric loudspeaker is better.

The invention provides a TM-polarization GaAsP / GaInP active-region 808nm quantum-well laser. The laser structurally comprises a substrate, a buffer layer, a type-N lower limit layer, a lower waveguide layer, a quantum well layer, an upper waveguide layer, a type-P upper limit layer, and an ohmic contact layer sequentially from bottom to top. The upper waveguide layer and the lower waveguide layer are made of aluminum-free material GaInP. The quantum well layer is made of GaAsP material. The waveguide layer and the quantum well layer form a wide-waveguide aluminum-free active region. The laser has the advantages that the influence of Al oxidization, growth interface roughness and accessory electric field at cavity surface upon the reliability in high power output, long service life and the like of the laser can be reduced effectively, the waveguide layer and the limit layers are optimally designed into wide-waveguide asymmetric structures, and internal loss can be reduced effectively, and maximum output power and reliability can be improved.

The invention discloses an ultrawhite polished tile and a preparation method thereof. The ultrawhite polished tile is prepared from chemical components of raw materials in percentage by mass as follows: 65%-74% of SiO2, 16%-23% of Al2O3, 5%-8% of alkali metal oxide and / or alkaline earth metal oxide, smaller than or equal to 0.2% of Fe2O3, smaller than or equal to 0.1% of TiO2 and 3%-5% of loss on ignition. Desiliconized aluminum powder is sufficiently utilized to replace conventional zirconium silicate and other zirconium-containing materials, the polished tile is whitened by directly using the raw materials instead of adding the zirconium-containing materials, accordingly, the whiteness of the polished tile is greatly improved through the desiliconized aluminum powder, the process requirement for whiteness is met, and the problem that the radioactivity of conventional polished tiles is beyond the standard is solved; the whiteness of the prepared polished tile is 70%-72%, and the prepared polished tile meets the market demands of the ceramic industry. The preparation method is simple to operate, raw materials are easy to obtain, the cost is low, the process controllability is high, and the ultrawhite polished tile with the whiteness of 70% can be prepared.

The invention discloses an automatic feeding device for stud welding. The automatic feeding device for stud welding comprises a machine frame, a longitudinal placing device for placing studs to be welded, a transverse pushing device for installing the longitudinal placing device and capable of transversely moving back and forth between a first position and a second position of a horizontal workstation of the machine frame, a longitudinal pushing device capable of longitudinally moving back and forth between a third position and a fourth position of a vertical workstation of the machine frame, a movable clamp fixed at the lower end of the longitudinal pushing device and capable of clamping a stud pushed to the second position by the transverse pushing device when the longitudinal pushing device moves to the third position, and a controller for performing data transmission and connected with the longitudinal placing device, the transverse pushing device, the longitudinal pushing device and the movable clamp. The automatic feeding device for stud welding is high in working efficiency, free of workpiece blockage, small in noise and electricity-saving, and can help to save the production cost.

The invention belongs to the technical field of speakers, in particular to a speaker system coupled by low and high sounds of piezoelectric materials and a sounding vibration device. The structure of the system mainly comprises a large size diaphragm, piezoelectric ceramics or a multi-functional sounding vibration device for driving the diaphragm to vibrate, a small size speaker bonded at an opening position of the diaphragm and a casing for supporting the diaphragm and constituting a back cavity. Advantages of the small size speaker, the piezoelectric ceramics or the small size ultrathin multi-functional sounding vibration device are fully used. The defect of low sound outputs of a piezoelectric-driven speaker is overcome by the large size (aperture) diaphragm, the structure is simple, the cost is low, the outer magnetic interference is small, and a good sound of a full frequency domain is achieved by coupling the replay of middle and high sounds.

The invention relates to an all-purpose cooking machine. The all-purpose cooking machine comprises a machine body, a multi-functional cooking area and an auxiliary area are arranged in the machine body, the multi-functional cooking area is a cooking chamber which is formed by arranging a heater, a pot body, a slice and a vegetable plate support in the machine body, an opening door is arranged on the cooking chamber, and the heater, the pot body, the slice and the vegetable plate support of the cooking chamber are distributed from bottom to top; the cooking area is provided with a heat circulation system, the heat circulation system comprises a circulation channel arranged in the multi-functional cooking area and a centrifugal draught fan arranged on the circulation channel, an exhaust inlet in one end of the circulation channel is formed above the cooking area, an air outlet in the other end of the circulation channel is back-connected into the cooking area, and therefore the heat circulation and utilization system of the cooking area is formed; the auxiliary area comprises multiple compartments which are arranged at one side of the cooking area and used for storing cooking supplies and cooking utensil. The all-purpose cooking machine has the advantages that multiple functions are achieved, occupied space is small, investment cost can be effectively lowered, and the all-purpose cooking machine is more suitable for the market demand.

The invention relates to a black chokeberry fruit wine which is prepared from the following raw materials in parts by weight: 105-130 parts of apple, 135-165 parts of black chokeberry, 135-165 parts of white granulated sugar, 0.09-0.11 part of food-grade sodium metabisulfite, 0.27-0.33 part of pectinase, 0.025-0.035 part of yeast powder, 0.45-0.55 part of yeast nutrient material and 0.09-0.11 part of amylase. The preparation method comprises the following steps: taking the apples, and pressing to obtain crude apple juice; carrying out enzyme treatment on the crude apple juice, filtering, and sterilizing to obtain sterilized apple juice; and taking the black chokeberry, crushing, adding the white granulated sugar, water, the rest pectinase, yeast powder, yeast nutrient material and food-grade sodium metabisulfite, uniformly mixing, fermenting, filtering, adding the sterilized apple juice into the obtained liquid, fermenting, filtering, taking the clear solution, and carrying out high static pressure treatment, thereby obtaining the black chokeberry fruit wine. The black chokeberry fruit wine has pure vinous flavor and natural aroma of the raw material fruits, and has the health care functions of resisting oxidation, lowering the blood sugar, softening the blood vessels and the like.

The invention discloses a polyurethane / PVC crosslink cable compound for automobile cables. The polyurethane / PVC crosslink cable compound is characterized by being prepared from the following raw materials in parts by weight: 100-102 parts of polyether urethane, 20-21.5 parts of diethyl aluminium hypophosphite, 17-18 parts of melamine cyanurate, 4.3-4.5 parts of aluminium titanate, 50-52 parts of PVC, 1.6-1.8 parts of a cross-linking agent TAIC, 6-7 parts of calcium stearate, 20-22 parts of acetyl tributyl citrate, 4-5 parts of zinc oxide, 3-4 parts of sodium stannate, 3-4.2 parts of liquid paraffin, 2-2.5 parts of urea, 1-1.2 parts of bis(P,P-bis-ethylhexyl diphosphato)ethanediolato titanate, 9-11 parts of 600-mesh calcium carbonate, 5-6 parts of high abrasion furnace black and 2-3 parts of maleic acid di-n-butyl ester. According to the polyurethane / PVC crosslink cable compound for automobile cables and the preparation method of the polyurethane / PVC crosslink cable compound, provided by the invention, by scientific and reasonable compatibility of the components and the controllable process, the product prepared by adopting the preparation method has excellent abrasive resistance, can maintain flexibility at a low temperature, is firm, not liable to cracking, and long in service life.

The invention belongs to agents for medical diagnostic apparatuses, and in particular relates to a buffer solution for an electrochemiluminescence immunity analyzer and a preparation method of the buffer solution. The buffer solution for the electrochemiluminescence immunity analyzer comprises the following components: potassium dihydrogen phosphate 4, tween-20, dodecyl polyglycol ether, polidocanol, tripropyl amine and citric acid; and the pH value of the buffer solution is 6.5-7.0. The buffer solution for the electrochemiluminescence immunity analyzer is simple to prepare and less in usage amount of tripropyl amine to reduce harms of tripropyl amine to bodies of operators and reduce the burden of the environment; the R value of a correlation coefficient after linear regression reaches more than 0.99 compared with an imported buffer solution for an electrochemical immunity analyzer and expresses relatively good relativity; and moreover, the buffer solution is low in production cost, and the selling price can be reduced by 30% compared with a reagent for an equivalent blood cell analyzer on the market, so that the buffer solution for the electrochemiluminescence immunity analyzer is beneficial for large-scale popularization and application.

The invention discloses a method for manufacturing an EVA (ethylene vinyl acetate copolymer) multi-color and multi-hardness sole, and the method comprises the following steps: material obtaining, injection-molding and mould cooling, first mould setting, moulding foaming, performing and second mould setting, and secondary foam forming, wherein the step of material obtaining means selecting at least two types of EVA particles which are different in color and hardness but same in foam expansion ratio; and the step of cold mould injection-molding means respectively injecting the EVA particles into different injection units, then sequentially injecting the EVA particles into different sole parts of a same sole mould and then cooling the different sole parts simultaneously. By using the method disclosed by the invention, a complete sole fork is combined with a side fork or a shoe sheet, so that the two are integrated firmly, thereby avoiding the occurrence of a situation that the complete sole wedge is separated from the side wedge after the sole is alternately contacted with sunshine, and rain for a long time; and the existing combined binding production line is saved, the production cost is reduced, and the working efficiency is improved.

The invention provides a method for rolling wide thin plates of a wide and thick plate rolling machine. According to the method, by means of size and shape design of a blank, uniform high-temperatureheating, control over rolling roller type and roller face temperature, optimization of the rolling schedule, especially ensuring of the stability of the rolling state of the last two passes, and control over technology key points of straightening and pile cooling, the wide and thick plate rolling machine can roll wide and thin steel plates with the thickness of 6 mm and the width surpassing 2500 mm, the uneven degree of the steel plates can reach the range smaller than 3 mm / m, the thickness allowance meets the N type deviation allowed by the national standard GB / T 709-2006, the performance ofthe overall steel plate is uniform, the obdurability is good, and the steel plate can meet the manufacturing requirement of ship plates, bridges, buildings and other steel structures. The method solves the problem that in the production process of existing wide and thin steel plates, the plate shape and the performance are not stable, and the ability of the wind and thick plate rolling machine toproduce the wide and thin plates in batches can be achieved.

The invention discloses a five-element lithium ion battery positive electrode material with an equivalent valence ratio, high stability and long cycle, a preparation method and a lithium battery prepared from the five-element lithium ion battery positive electrode material. The five-element positive electrode material has the following structure: Li(NiCoMn)xAyBzO2, wherein x is greater than or equal to 0.98, the element A comprises one of Mg and Sr, the element B is one of Zr, Ti and W, and the ratio of the element A to the element B needs to meet the following equation: (3-A valence)*y=(B valence-3)*z, and x+y+z=1. Compared with traditional ternary and other non-equal-proportion system materials, the five-element lithium ion battery positive electrode material has higher structural stability, and the cycle performance is obviously improved; and material defects are few, Li / Ni mixed arrangement is low, and the rate capability is more excellent.

The invention discloses a halogen-free flame retardant environment-friendly flexible cable sheathing compound for a portable power source. The sheathing compound is characterized by being prepared from the following raw materials in parts by weight: 100-102 parts of polyether urethane, 20-21.5 parts of diethyl aluminium hypophosphite, 17-18 parts of melamine cyanurate, 4.3-4.5 parts of aluminium titanate, 50-52 parts of PVC, 1.6-1.8 parts of a cross-linking agent TAIC, 6-7 parts of calcium stearate, 20-22 parts of acetyl tributyl citrate, 4-5 parts of urea, 5-6 parts of powdered phenolic resin, 7-8 parts of cotton pulp, 1.5-2 parts of magnesium methacrylate, 3-4 parts of white oil, 9-11 parts of carbon nano tubes, 2-3 parts of zinc oxide and 1-1.2 parts of allyltriethoxysilane. The halogen-free flame retardant environment-friendly flexible cable sheathing compound provided by the invention is not liable to cracking, fold-resistant, halogen-free, flame retardant, harmless to the environment and human bodies, long in service life and suitable for manufacture of cable materials of portable power sources and sheathing compounds of mobile phone data cables.

The invention provides a loquat and snow pear fruitcake which comprises, by mass percent: 10-30 % of maltose syrup, 5-15 % of fructose and glucose syrup, 20-30 % of loquat juice, 20-30 % of snow pear juice, 1-3 % of pectin, 0.2-0.8 % of a jelly coagulating agent, 0.1-0.4 % of agar, 0.1-0.3 % of sodium citrate, 0.05-0.2 % of malic acid, 0.2-0.5 % of citric acid, 0.1-0.3 % of maltodextrin and 0.05-0.1 % of sodium tripolyphosphate. The loquat and snow pear fruitcake is delicious in taste, and has efficacies of clearing away the lung-heat and moistening dryness, resolving phlegm, and relieving cough and asthma.

The invention discloses a liquid air separation device and method for extracting medium pressure oxygen. An air compression system and a pre-cooling system are connected with a purification system, the purification system is connected out and forms a direct current channel, a pressurization channel and an instrument air supply channel, the pressurization channel is sequentially connected with a pressurization system and a heat exchange system, the direct current channel is directly connected with the heat exchange system, the heat exchange system is connected with a distillation system througha plurality of pipelines, the liquid air separation device further comprises an automatic control system, and the pre-cooling system, the purification system, the heat exchange system and the distillation system are all connected with the automatic control system. The oxygen in air is purified through a cryogenic distillation method, oxygen interior compression is adopt, a large number of liquidproducts are generated, both medium pressure oxygen products and the large number of liquid products are produced, only a low temperature expander is used for providing the cooling capacity required for air separation, the output of the products is ensured, through reasonable matching between the pressure of a pressurization machine and the flow of the expander in the process, a plate heat exchanger can recover the cooling capacity better, energy consumption is reduced, the pressurized end of the expander is used for continuing to pressurize high pressure air, the end discharge pressure of thepressurization machine is lowered, and then the difficulty of making the pressurization machine is lowered.

The invention discloses a portable toilet. The portable toilet comprises a foldable toilet body and a seat cushion, wherein the seat cushion is arranged on the upper edge of the side wall of the toilet body, one part of the seat cushion is fixedly connected with the toilet body, and the other part, which is not fixedly connected with the toilet body, of the seat cushion is a free end. The portable toilet disclosed by the invention has the beneficial effects that since the toilet body and the seat cushion are foldable, the toilet is convenient to carry; since a sanitary bag can be separated from the inner side of the toilet body, the sanitary bag is only required to be changed after use and the toilet is convenient and sanitary; since the toilet body and the seat cushion can be cyclically used, the toilet is economical; moreover, since the free end of the seat cushion of the portable toilet is provided with a clamping groove which is matched with a groove arranged at the upper end of the toilet body, the seat cushion can be flexibly and conveniently fixed with and detached from the toilet body and the sanitary bag, and the effect is better; the entire structural design is simple, the manufacturing is facilitated, the cost is low and the market demands are met.

The invention discloses a novel outdoor power cable sheath material preventing moths and mildew. The material is characterized by being prepared from, by weight, 100-102 parts of polyether urethane, 20-21.5 parts of aluminum diethylphosphinate, 17-18 parts of melamine cyanurate, 4.3-4.5 parts of aluminum titanate, 50-52 parts of PVC, 1.6-1.8 parts of cross-linking agent TAIC, 6-7 parts of calcium stearate, 20-22 parts of acetyl tributyl citrate, 0.5-0.6 part of capsaicine, 0.2-0.3 part of imidacloprid, 1-1.2 parts of methyltrimethoxysilane, 2-3 parts of liquid silicone rubber, 9-11 parts of zeolite molecular sieves, 1.5-2 parts of OBPA mildew preventing agents, 3-4 parts of methyl silicone oil and 6-7 parts of high-abrasion-resistance carbon black. The prepared material has excellent flame-retardant performance and is excellent in moth preventing property, mildew preventing property and mechanical property, the technology can be controlled conveniently in an industrialized mode, and the material is suitable for outdoor cables.

The invention discloses an ultramicron three-proofing finishing agent and a preparation method thereof. The ultramicron three-proofing finishing agent is prepared in a way that 3 to 35 percent of perfluor hexyl acrylate, 2 to 45 percent of acrylate copolymer, 0.5 to 10 percent of N-methyl acrylamide, 0.1 to 5 percent of surfactant, 0.1 to 5 percent of V-50 initiating agent, 2 to 15 percent of acetic acid, 40 to 70 percent deionized water are selected as raw materials and are combined; and a blend range with better comprehensive performance and lower cost is provided so as to give full play to all the components. Through effective selection and proportional combination of the components, the three-proofing finishing agent provided by the invention is enabled to have the advantages of innocuity, harmlessness, good wash fastness, excellent air permeability, environmental friendliness, simple process, low cost and the like and perfectly meet market demands.

The invention discloses a novel composite elastomeric yarn. The novel composite elastomeric yarn mainly comprises two groups of fiber fringings and a core filament; and the core filament is a composite elastic filament. The invention also discloses a textile fabric woven by using the composite elastomeric yarn, and a method and a device for manufacturing the novel composite elastomeric yarn. The novel composite elastomeric yarn has a smooth surface and few of hairs; fibers of the novel composite elastomeric yarn cannot drop easily; and the novel composite elastomeric yarn is high in yarn forming power and is wear-resistant. The textile fabric manufactured by using the novel composite elastomeric yarn has a smooth surface and few of hairs, is wear-resistant, is high in tension and tearing force and high in elastic recovery rate, and feels soft and smooth. The device is modified simply and conveniently, is high in applicability, easy to maintain and high in cost performance; a modified spinning frame not only can be used for spinning the novel composite elastomeric yarn, but also can be used for spinning the other traditional ring spinning yarns or the other traditional ring siro spinning yarns; flexible deployment can be carried out in production; and flexible and versatile market requirements can be feasibly met.

The invention discloses a preventing water and inflaming retarding composite flexible cable sheath material used in wet environment. The flexible cable sheath material is characterized by comprising the following raw materials: be weight, 100-102 parts of polyether urethane, 20-21.5 parts of aluminum diethylphosphinate, 17-18 parts of melamine cyanurate, 4.3-4.5 parts of aluminium titanate, 50-52 parts of PVC, 1.6-1.8 parts of cross-linking agent TAIC, 6-7 parts of calcium stearate, 20-22 parts of acetyl tributyl citrate, 3-4 parts of polydimethylsiloxane, 3-4 parts of glycerin monostearate, 5-7 parts of antimonous oxide, 4-5 parts of emulsified asphalt, 4-5 parts of bisphenol A polycarbonate and 8-10 parts of talcum powder. The prepared product has good water resistance, good mud resistance, good decay resistance, good flame resistance, and has soft material. So that the prepared cable sheath has large bending amplitude, is especially suitable for the places where have high fireproofing requirement in coastal region having high humidity, and is especially suitable for ocean engineering.

A device for integrally forming a stereoscopic vamp pattern is disclosed. The device includes at least one forming mold and at least one vacuum apparatus connected to each forming mold through a pipeline. Each forming mold includes a mold base, a ceramic template and a hot-pressing seat. The device utilizes a characteristic that the ceramic material of the ceramic template itself has multiple pores and gas permeability to form uniform suction force on the ceramic surface during a vacuumizing process so that a vamp material is uniformly adsorbed to the surface of the ceramic template, thus allowing the stereoscopic pattern formed from the vamp material to be more uniform. In addition, the device has an advantage that finer and variable stereoscopic patterns can be manufactured simply by utilizing the ceramic material.

The invention discloses a dual-arch shed planting method for pumpkins. The dual-arch shed planting method includes the following planting steps: (1) carrying out preparing work before seeding, wherein the preparing work includes enough base fertilizer applying, soil preparation and ridging, soil sterilization and seed soaking sprouting; (2) growing seedlings; (3) planting the seedlings; (4) carrying out field management, wherein the field management work includes enough base fertilizer applying, topdressing at proper moments, pruning and vine tidying, artificial pollinating, temperature management, ditch cleaning, water draining, underground water level reducing and disease, insect and weed control; (5) carrying out harvesting at proper time. The dual-arch shed planting method is a cultivating technology which is low in cost, high in yield and high in benefit, the technology is rapidly popularized at present, the dual-arch shed planting method is simple in method and convenient to use, and a produced pumpkin product which is high in quality, high in yield and suitable for market demands is produced.

The invention discloses a novel multi-component elastomeric yarn, which is mainly formed by two groups of fiber strands and two groups of core filaments, wherein each group of fiber stands is formed by elastic filament yarns, low-elastic filament yarns, non-elastic filament yarns or any combination of the elastic filament yarns, the low-elastic filament yarns and the non-elastic filament yarns. The invention also discloses a preparation method and a device of the novel multi-component elastomeric yarn. The novel multi-component elastomeric yarn obtained through the invention is smooth and bright in surface, less in hairiness, uneasy for fiber to fall off, high in yarn strength and wear-resistant; the textile fabrics made of the novel multi-component elastomeric yarns is smooth and bright in surface, less in hairiness, wear-resistant, high in tension and tearing force, soft and smooth in hand feeling, and high in elastic recovery rate; the device provided by the invention is simple and convenient to refit, strong in applicability, easy to maintain, and high in cost performance; a ring spinning device completed through refitting not only can be used for spinning the novel multi-component elastomeric yarns, but also can be used for spinning other traditional ring spinning yarns or ring siro-spinning yarns, is flexible to deploy production, and can practically suitable for flexible and changeful market demands.

The invention belongs to the field of daily chemical products and skin care products and especially relates to a skin barrier repairing shower gel and a preparation method thereof. The skin barrier repairing shower gel is prepared from the raw materials, such as oleic acid, triethanolamine, sodium hyaluronate, plant extracts, cocamidopropyl betaine, ceramide, moisturizing agent, hydroxyethyl cellulose, alkanolamide, essence, preservative, pigment, boric acid and deionized water, according to a modern technology. Through test, the skin barrier repairing shower gel provided by the invention hassatisfying skin-cleaning and skin barrier repairing functions. Besides, the shower gel provided by the invention is characterized by simple formula and easily controlled quality; addition of sodium hyaluronate in raw material formula is lower, so that the production cost is effectively controlled; plant extracts acquired through a specific technology are added into the formula of the shower gel provided by the invention, so that various skincare performances of the product are obviously promoted; thus, the shower gel provided by the invention can meet the present market requirements.

The invention relates to the field of chemical products and extinguishing agents, in particular to a graphene and plant composite type flame-retardant fire extinguishing agent. The fire extinguishing agent is made of the raw materials such as plant leach liquor, plant ash, graphene, a flame retardant and water, wherein the plant leach liquor is obtained by leaching corn stigmas, cordia dichotoma, Chinese yams, elm bark and pomelo peel. Through tests, the graphene and plant composite type flame-retardant fire extinguishing agent has the excellent flame-retardant fire extinguishing performance and can meet the fire extinguishing requirements of various different environments, in addition, the fire extinguishing agent takes natural components as the raw materials, and therefore environment protection can be realized, no pollutant emission is generated, no damage to the atmosphere, the water quality and the soil can be caused in the using process, the ecological restoration of fire scenes can be facilitated, and adverse effects on survival of human and animals and production of agriculture, forestry, animal husbandry and fishery industry can be avoided.

The invention relates to the field of mouth care products and toothpaste, in particular to plant toothpaste for clearing heat and reducing internal heat and a preparation method thereof. The plant toothpaste is composed of a moisturizer, an abrasive agent, a surface active agent, an algefacient, a spilanthes oleracea extract, an extract of streblus asper leaves, an extract of kamuning leaves, echinacea purpurea oil, checkerberry wintergreen leaf oil, eucalyptus globules leaf oil, a corrosion remover, a thickener, a flavouring agent and water. It is proved by a clinical test, the plant toothpaste has an ideal adjuvant treatment effect on the fire oral diseases of dental ulcer, swelling and aching of gum and the like, the plant toothpaste is wide in application range and safe in using.

The invention relates to a textile finishing agent, in particular to a three-proofing finishing agent for wool fabric. According to the three-proofing finishing agent for wool fabric, methacrylic acid perluorobutenyloxy ethyl, N-methacrylamide and glycidyl methacrylate serve as raw material monomers, hexadecyl trimethyl ammonium bromide and fatty alcohol-polyxyethylene ether serve as a compound emulsifier, acetone and water serve as a mixed solvent, dimethyl 2,2-azobis(2-methylpropionate) serves as an initiating agent, body emulsion of the three-proofing finishing agent is prepared through a cross-linking polymerization reaction, then hydroxyethyl cellulose and sodium oleoyl amino fatty acid are compounded, and the final product is obtained. The three-proofing finishing agent has the advantages of being nontoxic, harmless, good in washing resistance and breathability and the like and achieves safety and environment friendliness, and after finishing is carried out, the wool fabric is excellent in performance, high in durability of waterproof, oil-proof and dirt-proof performance, and free of influences on the hand touch of fabric.

The invention discloses a highlight spraying-free polycarbonate PC composition. The highlight spraying-free polycarbonate PC composition comprises the following components: polycarbonate resin, ABS resin, white mineral oil, a silane coupling agent, modified polysiloxane, a flame retardant, a flexibilizer, polymethyl methacrylate, an antioxidant and a lubricant. The invention belongs to the technical field of high polymer materials, and particularly relates to a highlight spraying-free polycarbonate PC composition which is high in processability, free of surface fogging, resistant to scraping and good in stability.

The invention discloses a fully automatic electrically controlled precise quantitative seeding machine for wheat, and belongs to the technical field of precise quantitative seeding machines. The seeding machine comprises a seeding frame provided with a mounting rack, a three point hanging rack, a speed measuring wheel, a furrow opener and a depth limiting wheel; the mounting rack is provided with a seed box, a seed metering outlet bottom plate, a seed separating device, a seed separating motor, an electric appliance box and a seed metering motor; and the seed metering outlet bottom plate is provided with a grid-type seed metering device. The seeding machine can realize the intellectualization and precision of wheat seeding, has the advantages of seed saving and lower production cost compared with other planting methods, improves the growth conditions of ventilation and light transmission for grain seedlings, and is significant to realize a high and stable yield.

The invention relates to the field of traditional Chinese medicine and healthcare food and especially relates to an anti-fatigue and skin-nourishing health food and a preparation method thereof. The health food provided by the invention is an orally taken preparation, optimally, capsule, tablet and granule prepared from herba epimedii, American ginseng, yam, medlar, silphium and zinc gluconate according to a modern technical method. A human feeding trial proves that the health food provided by the invention has ideal anti-fatigue and skin-nourishing effects. Besides, the health food provided by the invention has the functions of scavenging free radicals, enhancing immunity, delaying senescence, and the like.