179results about How to "Not easy to wash" patented technology

The invention discloses an anticoagulation high polymer biomaterial which comprises a substrate layer, an anticoagulation coating, and a plasma polymerization layer positioned between the substrate layer and the anticoagulation coating, wherein the substrate layer is made of a biomedical material; the plasma polymerization layer is an allylamine plasma polymerization membrane layer deposited on the substrate layer; the anticoagulation coating is an anticoagulant layer fixed on the plasma polymerization layer; and the anticoagulants comprise hirudin, heparin and the like. Anticoagulant molecules are fixedly grafted on the material surface by utilizing the pulsed plasma technology and surface heparin grafting method, and effective molecule orientation is remained by heparin molecules, so the anticoagulant performance is close to the performance of heparin molecules in the solution. Meanwhile, the heparin molecules are difficultly scoured off by blood, the persistence and stability of the anticoagulation effect are guaranteed, and the service life is long. The invention further discloses a preparation method and application of the anticoagulation high polymer biomaterial.

The invention discloses an offshore wind power single-pile foundation scouring protection device. The offshore wind power single-pile foundation scouring protection device is characterized in that a turbulent flow bottom plate and lateral turbulent flow plates are fixed on a single-pile foundation; one end of the single-pile foundation is fixed in a seabed, the single-pile foundation is firmly connected with the seabed and is not easily scoured away by ocean current, and the turbulent flow bottom plate is fixed on the outer side of the single-pile foundation to form a seabed protection layer structure; multiple annular turbulent flow plates are fixed to the upper end of the turbulent flow bottom plate, and the annular turbulent flow plates can effectively reduce the water flow velocity at the seabed surface and reduce the seabed scouring effect; meanwhile, the pressure of seawater on the turbulent flow bottom plate can be utilized, and the scouring phenomenon between the single-pile foundation and the seabed is effectively prevented; the lower end of the turbulent flow bottom plate makes contact with the surface of the seabed; meanwhile, the bottom of the turbulent flow bottom plate can fix the bottom of the seabed; the plurality of lateral turbulent flow plates are evenly arrayed in the circumferential direction of the single-pile foundation, the purpose of weakening vortex formation around a pile body through the lateral turbulent flow plates is achieved, and then the seabed scouring effect is weakened; and the structure is simple, the flow speed of seawater around the pile is effectively reduced, and generation of large vortexes around the pile is reduced.

The invention relates to the field of agricultural liquid mulching films, and discloses a liquid fertilizer mulching film with high water retention and a method for preparing the liquid fertilizer mulching film. The liquid fertilizer mulching film in a formula comprises acrylic acid, sodium hydroxide solution, potassium persulfate, aluminum chloride, N, N' methylene-bisacrylamide, sodium bicarbonate, seaweed concentrated liquid, polyvinyl alcohol, carboxymethyl celluloses, silk protein powder, oxygen producers and inorganic fertilizer particles. The method includes adding the acrylic acid, the potassium persulfate, the seaweed concentrated liquid, the polyvinyl alcohol, the carboxymethyl celluloses and the silk protein powder into the sodium hydroxide solution and carrying out stirring reaction; adding the aluminum chloride and the N, N' methylene-bisacrylamide into the sodium hydroxide solution and continuing to stir the sodium hydroxide solution; adding the oxygen producers, the inorganic fertilizer particles and the sodium bicarbonate into the sodium hydroxide solution, then carrying out stirring reaction to obtain a reaction product and cooling the reaction product to obtain a finished product. The liquid fertilizer mulching film and the method have the advantages that good film-forming effects can be realized by the degradable liquid fertilizer mulching film, soil structures can be improved, outstanding water retention and heat-insulation effects can be realized, and the liquid fertilizer mulching film is easy to degrade and has functions of increasing fertilizers and promoting growth of root systems of crops; the liquid fertilizer mulching film is good in soil binding property and difficult to wash out by rainwater.

The invention relates to the field of an energy-saving device for a polysilicon CVD (chemical vapor deposition) reactor. An integrated quartz heat shield with best performance in the prior art is difficult to enlarge in size, poor in pressure resistance capability and fragile; and the produced heat radiation is high. According to the technical scheme provided by the invention, the heat shield is formed by splicing two or more quartz glass components; the overall heat shield of the reactor is formed by sleeving and superposing one or more layers of the splicing parts, and is fixed on the inner wall of the reactor through a fixing part; and one layer of quartz glass closest to a silicon rod is coated with a back reflection film. The heat shield provided by the invention obviously reduces the heat loss, and has the advantages that the heat stress of the silicon rod is low, the core melting and rod cracking probability of the silicon rod is low, the temperature field is uniform, the large-diameter silicon rod can be beneficially obtained, the yield is high, the equipment is easy to manufacture, convenient to operate and simple to maintain, etc.

The invention provides a beak litchi multi-stock grafting method. The beak litchi multi-stock grafting method is implemented in February and March each year, the grafting ends of scions of beak litchi are pruned to be wedge ends and are wrapped by moss, Huaizhi litchi stocks and longan stocks are selected as grafting stocks, the grafting parts of the Huaizhi litchi stocks and the grafting parts of the longan stocks are respectively cut to form cuts, the cuts and the peripheries of the cuts are wrapped by moss, then the moss on the scions, the cuts of the Huaizhi litchi stocks and the cuts of the longan stocks is removed, a nutrient solution is injected to the two sides of the grafting ends of the scions respectively, one end of the wedge end of each scion is attached to the cut of the corresponding Huaizhi litchi stock, the other end of each scion is attached to the cut of the corresponding longan stock, wax sealing is conduced, and grafting is completed. The beak litchi multi-stock grafting method is simple in step, the life activity of the scions and the cut stocks is improved, the compatibility is good, the grafting survival rate is improved, and the quality and the yield of fruits are improved.

Disclosed is a pesticide having insecticidal activity, its preparation. and compounds containing the active constituent with general formula disclosed in t he specification, wherein R1 is trifluoromethyl or hydrogen substituent group, R2 is trifluoromethyl, trifluoro methoxyl or hydrogen substituent group. The preparation process comprises the synthesis of intermediate compound 3-(5-chlorin-2-carboxyl phenyl) propionic acid, synthesis of 5-chlorin-1-carbonyl-1,3-dihydrogen-2-indenyl methyl formate, synthesis of 5-chlorin-1-carbonyl-1-carbonyl-1,3-dihydrogen-2-indenyl methyl formate.

The invention discloses a full-width mercerizing machine for knitting. The full-width mercerizing machine comprises a supporting bottom plate, a cloth feeding mechanism, an alkaline dipping mechanism, a washing mechanism and a cloth falling mechanism, wherein the alkaline dipping mechanism comprises a dipping groove, a cloth feeding roller, a mangle roller and a cloth discharging roller; the cloth feeding roller and the cloth discharging roller are respectively arranged on the dipping groove; the mangle roller is arranged in the dipping groove which is provided with a shading component; the shading component is positioned above the mangle roller; the washing mechanism comprises a cleaning groove, a cloth guiding roller, a transmission roller and a washing component; the cloth guiding roller, the transmission roller and the washing component are respectively arranged on the cleaning groove; the cleaning groove is internally provided with a partitioning plate which partitions the cleaning groove into an alkaline washing area and a water washing area; the transmission roller is positioned above the partitioning plate; an alkaline washing roller is arranged in the alkaline washing area, and a water washing roller is arranged in the water washing area. The full-width mercerizing machine disclosed by the invention has the advantages that the structure is simple, the connection is flexible, the cleaning effect is good, the volatilization of dipping liquid can be reduced, a finished fabric product is good in handfeel and large in strength, the production efficiency is high and the practicability is strong.

The invention provides a preparation method of photocatalyst regenerated cellulose fibers. The preparation method comprises preparation of a photocatalyst emulsion, preparation of cellulose spinning viscose and preparation of a photocatalyst blending and spinning solution. The prepared photocatalyst regenerated cellulose fibers have a remarkable decomposition function on aldehyde, benzene, benzene compounds and amide and have a function of air pollutant purification, and the photocatalysis removal rate is 30%-60%; the photocatalysis removal rate is 30%-60% after ten times of washing; the dry breaking strength of the prepared cellulosic fibers is 2.15-2.38 cN / dtex, the wet breaking strength is 1.15-1.35 cN / dtex, the photocatalyst regenerated cellulose fibers have excellent physical and mechanical properties, textile processing performance and wearability, further keep characteristics of wet absorption breathability of conventional viscose and comfort in wearing and also have the advantages of high photocatalyst oxygenolysis of VOCs (volatile organic compounds) and function durability.