68results about How to "Strong shrinkage" patented technology

The present invention discloses a self-compacting concrete for CRTS III plate-type ballastless track filling layer. The concrete is prepared from the following raw materials in parts by weight: 270-350 parts of cement, 0-130 parts of coal fly ash, 0-120 parts of mineral powder, 20-50 parts of an expanding agent, 790-900 parts of fine aggregate, 750-900 parts of continuous gradation coarse aggregate, 20-40 parts specific viscosity modified materials, 5.5-8.5 parts of a specific sustained release controllable polycarboxylic acid water reducing agent and 165-180 parts of water. According to the invention, the specific viscosity modified materials and specific sustained release controllable polycarboxylic acid water reducing agent are used in combination to prepare the specific self-compacting concrete for filling layer with good flowability, strong volume stability, low sensitivity for water consumption, small thixotropic time change, low shrinkage and good longevity, thereby reducing theconstruction difficulty of the CRTS III plate-type filling layer and prolonging the sevice life of the ballastless track structure.

The invention discloses a flame-retardant PET heat shrink film which comprises the following material in parts by weight: 80 to 90 parts of PET resin, 5 to 10 parts of environmentally friendly fire retardant, 1 to 5 parts of auxiliaries, 2 to 5 parts of lubricant and 1 to 3 parts of plasticizer. The flame-retardant PET heat shrink film not only has high tensile strength and high shrinkage performance, but also has a flame-retardant function, is applicable to external packing of electronic products, can prevent spontaneous combustion, which is caused by heat, of electronic products, and prevents fire hazard.

The invention relates to a casting production technology of a valve body. The production technology comprises the following steps in turn: preparing a mould, preparing a sand mould, performing core setting, smelting, pouring and performing subsequent operations, wherein the preparation of the sand mould comprises the following steps: firstly filling moulding sands in the mould, secondly ramming moulding sands to complete modeling and installing a charging hole on the completed model; smelting comprises the following steps: firstly selecting material according to the demand of the casting, secondly adding alloy element in molten iron and thirdly performing inoculation when molten iron is discharged; and pouring comprises the following steps: firstly injecting molten iron in an impression, wherein the pouring temperature is 1380-1440 DEG C and the pouring time is 8-20 seconds; and secondly keeping temperature for 40-80 minutes, wherein the production yield is 40%-60%. The casting production technology of the invention has better pouring quality, the density of the casting is uniform; and the sand mould is not easy to crack and has wider application range.

The invention discloses baby skin moistening and protecting cream which comprises the following ingredients in percentage by weight: 2.15085-41.2% of plant extracts, 0.5-8% of at least one of caprylic triglyceride and capric triglyceride, 0.2-3% of sorbitan olivate, 0.5-10% of glycerinum, 0.2-3% of cetearyl olivate, 0.2-3% of glyceryl stearate, 0.1-5% of sorbitol, 0.05-0.3% of xanthan gum, 0.3-0.8% of tocopherol, 0.0001-0.5% of hyaluronic acid, 0.5-3% of erythritol and the balance of water, wherein the plant extracts include avocado butter, olea europaea fruit oil, rice chaff oil, wheat germ oil, oat germ oil, a paeonia suffruticosa root extract and rosmarinus officinalis leaf oil. The baby skin moistening and protecting cream is prepared from various plant extracts and animal extracts and chemicals with small skin irritation, so that the cream has a good effect of moistening and protecting baby skin and has no irritation and toxicity to the baby skin.

The invention discloses a fullerene ethylenediamine nitrate as well as a preparation method and an application thereof. Firstly, fullerene C60 and ethylenediamine are taken as raw materials, fullerene ethylenediamine is prepared by the aid of a nucleophilic addition principle, and the fullerene ethylenediamine reacts with nitric acid so that the fullerene ethylenediamine nitrate is obtained. The fullerene ethylenediamine nitrate has the advantages of oxidant ammonium nitrate (AN), can avoid disadvantages of hygroscopicity, and crystal transformation of AN, and can be used as an oxidant to be applied in a novel solid rocket propellant or explosive.

The invention relates to the field of cryoablation, in particular to a cryoablation catheter with a mapping function. The cryoablation catheter comprises a far-end tube, an ablation balloon and a mapping balloon, wherein the far-end tube is a far-end section of the catheter; the ablation balloon is mounted at the end of the far-end tube and used for cryoablation; and the mapping balloon is locatedat the front end of the ablation balloon and has expansion and contraction functions, and a plurality of mapping electrodes are arranged on the surface of the mapping balloon. The invention aims to provide the cryoablation catheter which can improve the mapping effect of cryoballoon ablation for atrium diseases.

The invention provides a composition, and a preparation method and applications thereof. The composition comprises, by weight, 15 to 30 parts of rosemary essential oil, 1 to 5 parts of Artemisia apiacea extract, and 200 to 300 parts of tea bran extract. The formula is reasonable; synergistic interaction of the components is achieved; in preparation of a scalp nourishing agent, the composition is combined with a plurality of scalp conditioning agents, so that the nourishing effect on scalp is improved; the composition is capable of washing hair, is safe and non-irritant, is capable of preventing alopecia, promoting hair growth, blacking and brightening hair, improving dry and regged hair, is promising in application prospect, and is high in market value.

The invention discloses a coextrusion-lamination obstructing packaging film and belongs to the technical field of packaging materials. According to the coextrusion-lamination obstructing packaging film, the problems that an intermediate layer of an existing coextrusion film is relatively high in water absorption, the permeability resistance of barrier layers is reduced, the effective expiration date of a product is short, and meanwhile, due to structure arrangement of the intermediate layer PA of the coextrusion film and the single barrier layers at two sides of the intermediate layer, high barrier property and high coextrusion malleability property of the packaging film can not be simultaneously realized are solved. The packaging film comprises a BOPET (biaxially-oriented polyethylene terephthalate) film, an APET shading film, a first PE polyethylene film, a first PET polyester film, a first EVOH barrier layer, a PVDC gas barrier film, a second EVOH barrier layer, a second PET polyester film and a second PE polyethylene film, wherein the BOPET film, the APET shading film, the first PE polyethylene film, the first PET polyester film, the first EVOH barrier layer, the PVDC gas barrier film, the second EVOH barrier layer, the second PET polyester film and the second PE polyethylene film are co-extruded and compounded from outside to inside to form the packaging film. The packaging film disclosed by the invention is especially suitable for packaging fresh seafood, beef and dried tofu.

The invention discloses an aluminum silicate composite heat-insulating coating for walls, which comprises the following raw materials in percentage by mass: 2 to 3 percent of redispersed latex powder, 13 to 19 percent of aluminum silicate fiber, 1 to 2 percent of cellulose, 0.25 to 0.35 percent of wood fiber, 0.4 to 0.7 percent of polypropylene fiber, 13 to 16 percent of fly ash, 5.5 to 6.4 percent of quartz powder, 16 to 21 percent of closed cell heat-insulating particles, and the balance of cement. The aluminum silicate composite heat-insulating coating for the walls has the advantages of no toxicity or harm, high thermal insulation property, sound absorption performance, water resistance, frost resistance and high-temperature resistance, low shrinkage, no seam in general, avoidance of cold bridge or heat bridge, high cracking resistance, shock resistance and negative wind pressure resistance and light volume weight; the raw materials have high workability, water retentivity and adhesion and difficult hollowness, can be firmly adhered to various geometrical surfaces and are particularly suitable for construction of various special surfaces; during the construction, the coating does not drop or sag, is convenient to construct and has low loss; and the coating is A-grade and non-combustible, and cannot generate harmful gas at a high temperature.

The invention relates to an angiography technology and an anatomy and casting technology of a body sample and specifically discloses a body sample angiographic filler and a preparation method thereof. The filler consists of E-51 epoxy resin, 2,4,6-tri(dimethylamino methyl) phenol (DMP-30), polypropylene glycol diglycidyl ether (D-1217), a T-31 epoxy resin curing agent and a metal oxide powder contrast agent (zinc oxide, titanium dioxide, cuprous oxide and chromium sesquioxide). The angiographic filler disclosed by the invention is simple to prepare, easy to regulate in concentration and color and hard to decolorize, and has the characteristics of being rapid in automatic coagulation, small in percentage of contraction, high in toughness, low in cost and the like. CT reconstruction of blood vessel images of a human body sample or an animal body sample (or organ) have the advantages of being clear, full, continuous, free of fake shadows and burrs and the like.

The invention provides three-dimensional gorgeous paint as well as a preparation method and a construction process thereof. The three-dimensional gorgeous paint comprises the following components in parts by weight: 200-500 parts of water, 0.1-5 parts of a wetting agent, 0.1-4 parts of a preservative, 0.1-5 parts of a defoaming agent, 5-30 parts of propanediol, 10-50 parts of a film forming aid, 0.1-4 parts of a pH value regulating agent, 200-500 parts of a pure acrylic emulsion, 1-30 parts of a thickening agent and 100-400 parts of colored solid dry particles. The preparation method comprises the steps of after uniformly dispersing water, the wetting agent, the preservative, the defoaming agent, propanediol, the film forming aid, the pH value regulating agent and the pure acrylic emulsion, adding the thickening agent, uniformly stirring, adding the colored solid dry particles, and uniformly mixing to obtain the three-dimensional gorgeous paint. The three-dimensional gorgeous paint has the beneficial effects that the raw materials are wide in sources, easily and conveniently available and relatively low in cost; furthermore, the preparation process is simple, the product system is stable, the construction is easy and convenient, and the limits that existing colored paint is tedious in colour modulation, complex in production process and high in construction requirement are thoroughly changed.

The invention discloses a dressing device for bile leakage of abdominal incision infection split and merging. The device comprises a suction tube, a drainage tube, a washing pipe, a lavage tube and a liquid collection bottle; the suction tube, the drainage tube and the washing pipe are communicated by a three-way connector; a liquid outlet end of the drainage tube extends into the liquid collection bottle which is connected with central negative pressure by a connecting pipe; the outside of a pipe wall of a liquid inlet end of the suction tube is wrapped with sponge, and the pipe wall arranged in the sponge is provided with a plurality of through holes; a pipe wall of a free end of the washing pipe is provided with a plurality of side holes; the washing pipe is connected with the lavage tube by a double-chamber glass connector; the device further comprises a semipermeable membrane used for closing the surface of a wound. The device has the characteristics of closing the wound rapidly, reducing the surface of the wound, realizing good drainage, quick healing and little suffering, and the like.

The invention relates to the technical field of big leaf species tea-seed oil, and particularly relates to a condensed soap prepared by raw material of Yunnan big leaf species tea-seed oil. The condensed soap is prepared from Yunnan big leaf species tea-seed oil, moringa seed oil, grape pip oil, rosemary essential oil, jojoba oil, red wine and sodium hydroxide. The Yunnan big leaf species tea-seed oil, moringa seed oil, grape pip oil, jojoba oil and red wine are scientifically matched to prepare the condensed soap with skin-moistening and beautifying effects.

The invention discloses a shooting speed test system and a test method used for training. A wireless signal projector is arranged on a gun used for shooting and signal switches are respectively connected onto a holster, a gun bolt and a trigger; the signals are received by a wireless signal receiver connected with a computer; the command signal from the conductor is simultaneously sent to the computer and the trainees; as the command is sent by the conductor, the time from drawing gun, feeding, opening safety, pulling trigger to shooting the object are all recorded so as to overcome the defects of the existing system that only the complete time of the shooting can be recorded and the intermediate processes can not be accurately recorded. The invention can accurately measure the shooting speed of the trainees by recording the time of each action during the shooting process so as to help the trainees enhance the actual-combat adaptability and fully enhance the shooting level. The invention can be applied to the training sites with live shooting or laser simulated shooting.

A refreshing and cool patch and a preparation method thereof. The invention discloses the refreshing and cool patch which includes a refreshing and cool patch body. The refreshing and cool patch body is composed of a back lining layer, a high-molecular gel layer and an anti-binding layer. The anti-binding layer is arranged at an upper layer of the high-molecular gel layer. The back lining layer is arranged at a lower layer of the high-molecular gel layer. The high-molecular gel layer includes following components, by weight: 30-32% of a high-molecular gel material, 1-2% of medicinal alcohol being 75% in mass concentration, 1-2% of mint essential oil, 1-1.5% of rosemary essential oil and 1.1-1.2% of chemical additives, wherein the components are added with pure water to 100%. The invention also discloses the preparation method of the refreshing and cool patch. The mint essential oil has a high-efficient temperature-reducing effect and has a mint fragrance which is cool and refreshing and can excite spirit. The rosemary essential oil has a strong shrinkage effect, can tightening loosened skin, and can reduce hyperemia and swelling. The refreshing and cool patch has effects of exciting spirit and refreshing head, alleviating fatigue and improving attention and is long in refreshing durability.

The invention discloses refreshing compound essential oil wet tissue. The wet tissue is prepared by, by weight, 1.5-2.5 parts of benzoin essential oil, 1.2-2.0 parts of rosemary essential oil, 0.8-1.5 parts of thyme essential oil, 0.5-1.2 parts of mint essential oil, 0.4-1.0 part of tea plant essential oil, 0.5-1.3 parts of vetiver essential oil and 7.8-8.5 parts of wheat germ oil. The refreshing compound essential oil wet tissue has the advantages that naturally-extracted essential oil serves as a raw material, no toxic irritant substance is contained, no side effect is generated for the human body after the wet tissue is used for a long time, people cannot be addicted to the wet tissue, and the wet tissue is safe and effective. Borneol is added into components, absorption to the essential oil by nasal cavity mucosa is enhanced, and the wet tissue further has heat absorption and cooling effects when used in summer.

The invention relates to the technical field of coatings, in particular to a heavy-duty environment-friendly water-based industrial coating and a preparation method thereof. The heavy-duty coating environment-friendly water-based industrial coating comprises a two-component water-based epoxy primer and a water-based acrylic polyurethane coating finish paint, and the top face of the two-component water-based epoxy primer is coated with the water-based acrylic polyurethane coating finish paint; a novel waterborne epoxy emulsion and a waterborne epoxy component B are subjected to crosslinking curing to obtain the two-component waterborne epoxy coating, the two-component waterborne epoxy coating has high adhesive force, the corrosion resistance and shrinkage performance of a coating film are high, no organic solvent is contained or the content of volatile organic compounds is low, and environmental pollution is reduced; a defoaming agent with the optimal proportion of 0.1%-0.3% is selected, the phenomenon that a large number of shrinkage cavities are generated in a coating film is reduced, meanwhile, the use dosage of the wetting and leveling agent is controlled, the situation that the effect of the defoaming agent is affected by too large use amount is prevented, the problem that color paste is layered is solved, and the curing effect and the salt spray resistance of the finishing paint for the water-based industrial coating are effectively improved.

The invention discloses a compound essential oil spray with a refreshing function. The compound essential oil spray with the refreshing function is prepared from the following active ingredients in parts by weight: 1.5-2.5 parts of benzoin essential oil, 0.5-1.2 parts of peppermint essential oil, 0.5-1.0 parts of sweet marjoram essential oil, 1.2-2.0 parts of rosemary essential oil, 0.8-1.5 parts of thyme essential oil, and 7.5-8.5 parts of wheat germ oil. The compound essential oil spray has good effects that the natural extraction essential oil is taken as the raw material without toxic stimulating substance, the compound essential oil spray does not have side effect or addiction on a human body after being used for a long time and is safe and effective; the essential oils are mixed and cannot generate other dangerous chemical substances and the fragrance is fresh and cool; the fatigue nerve of the human body is completely activated through meridian circulation and qi and blood flow.

The invention discloses a microcapsule modified thermoplastic phenolic resin composite material brake pad. The microcapsule modified thermoplastic phenolic resin composite material brake pad comprises the following raw materials in parts by weight: 12-15 parts of modified thermoplastic phenolic resin, 15-22 parts of nylon fiber, 5-10 parts of asphalt base carbon fiber, 5-10 parts of Dutch rock wool, 10-13 parts of cellulosic fiber, 15-20 parts of barite, 5-10 parts of fluorite, 5-6 parts of granular graphite, 5-8 parts of butadiene-acrylonitrile rubber powder, 8-10 parts of cashew nut shell oil friction powder and 2-4 parts of poly(urea-formaldehyde) coated bisphenol A-type epoxy resin microcapsule. The microcapsule modified thermoplastic phenolic resin composite material brake pad disclosed by the invention is good in toughness, moderate in hardness, wear resistant and excellent in heat resistance performance.

The invention provides a portable functional tent of a quadrangular-prismatic stretching overall structure, and belongs to the technical field of portable tents. The tent comprises retractable rods, sleeve rings, elastic ropes, rigid ropes, self-locking mechanisms, five pieces of cover cloth and an information collector; the four retractable rods intersect with one another, and the distribution positions of the eight vertices of the retractable rods are vertices of a quadrangular prism or a frustum of the quadrangular pyramid; each elastic rope is connected with the two vertices correspondingto the upper and lower bottom surfaces separately; each rigid rope is connected with the four vertices corresponding to the upper bottom surface or lower bottom surface of the structure separately. The five pieces of cover cloths are connected through zippers; the information collector includes an air quality sensor, an arduino single-chip microcomputer, a GPS positioning chip and a Bluetooth device. The structure has the advantages of being free of installation, high in contractility, small in occupation space and the like, has the function of information collection and monitoring, and conducts real-time information transmission and early warning with mobile devices such as mobile phones.

The invention discloses electroconductive adhesive with high performance, low resistance value and high cost performance, and a preparation method thereof. The electroconductive adhesive is mainly prepared from epoxy resin, acrylic resin, electroconductive adhesive filler, a dispersing agent, a curing agent and a curing accelerant. The preparation method comprises the following steps: mixing and stirring the epoxy resin, the acrylic resin and the dispersing agent uniformly, slowly adding the electroconductive adhesive filler into the components, adding the curing agent and the curing accelerant, guaranteeing complete and uniform mixing, and stirring at high speed and for 20 to 60 minutes to obtain the electroconductive adhesive. The selected epoxy resin and the acrylic resin are compounded and the advantages of the two adhesive systems are combined, so the temperature resistance and the stability of the electroconductive adhesive can be improved greatly, the traditional single metal copper powder is replaced by the silver-plated copper powder compounded with the resin, the cost is reduced, and the electric conductivity and the electroconductive stability are greatly improved.

The invention discloses casting molding sand for a high-precision casting. The casting molding sand is prepared from the following raw materials in parts by weight: 160-180 parts of chromite sand, 20-30 parts of medical stone, 15-20 parts of iron red powder, 1-2 parts of superfine barium sulfate, 3-4 parts of carboxymethyl cellulose, 25-30 parts of aluminum ammonium sulfate, 2-3 parts of sodium tripolyphosphate, 2-3 parts of dodecylbenzenesulphonic acid, 2-3 parts of pine tar, 1-2 parts of lactose, 2-4 parts of silica sol, 7-9 parts of furan resin, 2-4 parts of polyoxyethylene lauryl ether, 8-10 parts of pea starch, 100-130 parts of quartz sand and an appropriate amount of water. The casting molding sand is smooth, high in adhesion, high in plasticity, high in thermal stability, high in air permeability, good in thermal stability and low in shrinkage rate, and the size of the casting is stable; by virtue of superfine barium sulfate, the fluidity and the dispersity of the molding sand are improved, and the collapsibility at high temperature is improved; the casting molding sand is easy to mold, a core is easy to manufacture, the phenomena of shrinkage cavities and shrinkage porosity infrequently occur, the casting yield is improved, and the casting molding sand is applicable to manufacturing of castings with high precision requirement.

The invention relates to a chitin fiber and silk fiber blended mask, which comprises a chitin fiber and silk fiber blended layer containing a nutrient solution, wherein the nutrient solution is prepared from the following components by weight percent: 40-60% of collagen peptide, 2-15% of sodium hyaluronate, 20-25% of cactus stem extract, 10-15% of aloe vera extract and 8-15% of vitamin C. According to the chitin fiber and silk fiber blended mask, the nutrient solution can penetrate stratum corneum of skin and then permeate dermis, effectively plays an efficient role in holding moisture, resisting wrinkles, restraining generation of melanin and delaying senescence; the mask can fit the skin well, no cut needs to be arranged, the nutrient solution can be fully absorbed, drop and leakage of the nutrient solution are avoided, much inconvenience caused to cosmetology of people by traditional masks is greatly improved, meanwhile, the mask has the characteristics of being soft, breathable, comfortable, fit, free of side effect and the like.

The invention relates to an adhesive compound for a hot-sealing insert, to an insert that is equipped with said adhesive compound, and to a method for fixing the insert. The adhesive compound consists of a thermoplastic hot-melt adhesive (A) that is not adhesive at room temperature and a pressure sensitive adhesive (B) that is adhesive at room temperature.

The invention discloses a portable purifying humidifier for air purification and relates to the technical field of air purification equipment. The portable purifying humidifier specifically comprisesan upper shell, a water bucket installation mechanism, a lower shell, a connection mouth waterproof mechanism and sliding mechanisms, wherein the upper end of the upper shell is fixedly provided witha top plate, an annular threaded groove is internally connected with a connection end head in a screwed manner, the middle portion of the upper surface of a cover plate is fixedly provided with a filter net, the water bucket installation mechanism is located on the inner side of a circular groove, the outer surface of the upper shell is fixedly provided with sliding strips, the lower shell is located under the upper shell, the connection mouth waterproof mechanism is located on the front surface of the lower shell, and the sliding mechanisms are located on the left and right two sides of a base. According to the portable purifying humidifier for the air purification, strong contractility exists between the upper shell and the lower shell, after the portable purifying humidifier is used, the upper shell and the lower shell can be compressed, the overall height of the portable purifying humidifier is made to be reduced, the space occupation quantity of the portable purifying humidifier is reduced, and the portable purifying humidifier is conveniently transported and carried.

The invention relates to a various-bottle-neck handle. The upper part of the circular truncated cone-type handle is connected with a cross beam, the lower part is connected with a bottom beam, and a bottle neck sleeve with a telescopic tooth socket is arranged under the bottom beam. The various-bottle-neck handle is installed on a bottle neck, which is convenient for carrying to avoid breaking a bottle.

The invention discloses a weaving method of seamless knitted lace-like fabric. The weaving methodcomprises the following steps: two different kinds of lace yarn of rayon 77 Yilite 23 of 1 / 47 nm (count) and 75 nylon 25 polyerster of 1 / 75 nm (count) are selected; a cylindrical weaving mode is adopted, two yarn feeding mouths are required and carry the two different kinds of lace yarn respectively during weaving, and the yarn feeding sequence during weaving is staggered yarn feeding; a fully-formed computerized flat knitting machine with RP needle platesis adopted for weaving, calculating of thefabric technological size, pattern making and patternadjustment are performed on a computer, a lace pattern plate is designed, a programming diagram is input, and weaving is started; the woven fabricis washed with water. The weaving method of the seamless knitted lace-like fabric has theadvantages that the loss of raw materialscan be reduced in the production and weaving process, the minimum order quantity is reduced, the manual sewing procedure is omitted, and the qualified rate and finished product rate of products are increased.

The invention discloses special thixotropic resin for manufacturing glass fiber reinforced plastic (FRP) vehicles and ship hulls, and a preparation method thereof. The thixotropic resin is prepared by unsaturated polyester resin, modified low-shrinkage resin, fumed silica and additives, wherein the unsaturated polyester resin is prepared by phthalic anhydride, maleic anhydride, ethylene glycol and propylene glycol according to the mole ratio of 2:1:(0.6-0.8):(2.2-2.8). The method specifically comprises the steps of adding modified low-shrinkage resin into the unsaturated polyester resin to obtain matrix resin; then sequentially adding the matrix resin and fumed silica and additives into a thixotropic kettle dispersing at high speed for dispersing at high speed until the fineness of the mixed material reaches 30mu m, thus obtaining the thixotropic resin. The thixotropic resin is lower in linear shrinkage, incapable of having running phenomenon of resin glue liquid in construction on a perpendicular surface, and suitable for manufacturing the glass fiber reinforced plastic (FRP) vehicles and ship hulls, which have higher requirement for dimension stability.