141results about How to "Won't seep" patented technology

Belonging to the technical field of thermal conductive interface materials, the invention relates to a low viscosity and high thermal conductivity organosilicon gel and a preparation method thereof. The low viscosity and high thermal conductivity organosilicon gel consists of a component A and a component B. Specifically, the component A comprises the following components: vinyl silicone oil, polyvinyl silicone oil, alkyl modified silicone oil, an active diluent, high thermal conductivity compound inorganic filler, a catalyst and pigment; and the component B comprises the following componentsby mass: vinyl silicone oil, polyvinyl silicone oil, alkyl modified silicone oil, an active diluent, high thermal conductivity compound inorganic filler, hydrogen-containing silicone oil, an inhibitorand a tackifier. The product provided by the invention has the characteristics of low viscosity, high extrudability and high thixotropy, and easy mixing, can be compressed into filling layers of different thicknesses and different shapes, can be quickly solidified into soft silicone gel at normal temperature and by heating, is suitable for filling the irregular gaps among various electronic devices and heat dissipators, and can play the role of heat conduction, insulation, buffering, shock absorption, etc.

The invention discloses a heat-storing and temperature-regulating fiber and a preparation method thereof. The heat-storing and temperature-regulating fiber is prepared from a phase-change material and fiber-forming polymer by a solution composite spinning method. The cross section of the heat-storing and temperature-regulating fiber is in the shape of an island or concentric circles; the mass fraction of the phase-change material is 20-60wt%; the mass fraction of the fiber-forming polymer in the fiber is 80-40wt%; and the sum of the mass fraction of the phase-change material and the mass fraction of the fiber-forming polymer is 100%. The phase-change material is obtained by respectively fusing or dissolving functionalized graphene and comb-like polymer, mixing to obtain solvent, and evaporating the solvent thoroughly. The preparation method comprises the step of preparing the heat-storing and temperature-regulating fiber by using the phase-change material and the fiber-forming polymer through conventional wet spinning. The method is simple and has an industrialization prospect. The prepared heat-storing and temperature-regulating fiber is high in heat conduction efficiency and good in heat-storing and temperature-regulating performance, has conductivity, and has a certain antistatic effect.

The invention belongs to the technical field of cat litter, and provides deodorant plant cat litter and a preparing method thereof. The deodorant plant cat litter is prepared from, by weight, 60-70 parts of soybean fibers, 25-35 parts of corn starch, 10-20 parts of sodium bicarbonate, 5-10 parts of zeolite, 4-6 parts of citric acid, 1-3 parts of sodium phenylpropionic acid, 3-7 parts of active carbon, 2-5 parts of ammonium persulfate, 2-4 parts of guar gum, 1-5 parts of a garlic extract, 1-3 parts of tea residues and 0.5-1 part of polyethyleneimine. By means of the deodorant plant cat litter and the preparing method thereof, the technical problem that cat litter in the prior art is poor in antibacterial deodorant effect is solved.

Disclosed is a curable electromagnetic shielding adhesive film having a curable conductive polyurethane-polyurea adhesive layer (I) and a curable insulating polyurethane-polyurea resin composition layer (II). The curable conductive polyurethane-polyurea adhesive layer (I) contains a polyurethane-polyurea resin (A) which is obtained by reacting a urethane prepolymer (a4) having an isocyanate groupat an end with a polyamino compound (a5), and an epoxy resin (B) having two or more epoxy groups. The urethane prepolymer (a4) is obtained by reacting a carboxyl group-containing diol compound (a1), a polyol (a2) having a number average molecular weight of 500-8,000 which is not a carboxyl group-containing diol compound, and an organic diisocyanate (a3). The curable conductive polyurethane-polyurea adhesive layer (I) also contains 10-700 parts by weight of a conductive filler per 100 parts by weight of the total of the polyurethane-polyurea resin (A) and the epoxy resin (B). The curable insulating polyurethane-polyurea resin composition layer (II) contains a polyurethane-polyurea resin (C) which is obtained by reacting a urethane prepolymer (c4) having an isocyanate group at an end with apolyamino compound (c5), and an epoxy resin (D) having two or more epoxy groups. The urethane prepolymer (c4) is obtained by reacting a carboxyl group-containing diol compound (c1), a polyol (c2) having a number average molecular weight of 500-8,000 which is not a carboxyl group-containing diol compound, and an organic diisocyanate (c3).

The invention discloses a DBC (Direct Bonded Copper) substrate surface treatment process based on a nano-silver soldering paste connecting chip. The process solves the technology that not only the copper on the DBC substrate surface is prevented from bleeding out of a silver plating surface, but also the combination strength between the nano-silver soldering paste connecting chip and the DBC substrate is ensured. The DBC substrate surface treatment process comprises the following steps of: firstly carrying out cleaning pretreatment on the surface of a DBC substrate; then carrying out electronickelling treatment on the pretreated DBC substrate; and finally, after thorough cleaning, carrying out silverplating treatment on the surface of the electronickelled DBC substrate by using a magnetron sputtering method. The DBC substrate surface treatment process based on the nano-silver soldering paste connecting chip has the following beneficial effects: when the electronickelled DBC substrate subjected to magnetron sputtering silver is sintered at high temperature by using a nano-silver soldering paste, the metal copper on the surface of the DBC substrate does not oxidize, i.e. the metal copper does not permeate the surface of a silvering layer; after being sintered, the nano-silver soldering paste has good bonding strength with the electronickelled DBC substrate subjected to magnetron sputtering silver; and the DBC substrate surface treatment process is green and environment-friendly and has no adverse effect on the environment.

The invention provides an electronic cigarette oil leakage preventing device adopting a light-induced reversible deformation layer. The electronic cigarette oil leakage preventing device comprises a housing (12), a light source accommodation cavity (2) provided with a light source (1) in the inside and provided with a transparent light outlet wall (2-1), a light-induced reversible deformation layer (5) provided with a lighted side surface and a back-lighted side surface, and an elastic layer (6) tightly attached to the back-lighted side surface of the light-induced reversible deformation layer (5), wherein the lighted side surface faces the light source (1), an airflow outlet channel is defined between the lighted side surface of the light-induced reversible deformation layer (5) and the light outlet wall (2-1) and the housing (12), and an air inlet hole (8) and an air outlet hole (3) of the airflow channel are respectively formed in the housing (12), one end of every one of the two holes is fixedly connected with the light outlet wall (2-1) or the housing (12), the other end of every one of the two holes is attached to the lighted side of the light-induced reversible deformation layer (5), and therefore blocking of the airflow channel is formed.

The invention discloses natural plant cat litter and a preparation method thereof, and relates to the technical field of cat litter preparation. The natural plant cat litter is prepared from, by weight, 60-70 parts of vegetable fiber, 40-50 parts of pine bits, 20-45 parts of modified straw charcoal, 10-15 parts of salmon powder, 3-7 parts of houttuynia cordata, 4-8 parts of hyacinth bean residues,10-15 parts of green tea leaves, 6-10 parts of spinach extractives, 3-6 parts of coconut oil, 5-8 parts of chia seeds, 10-15 parts of coffee grounds, 3-7 parts of adhesives, 8-12 parts of activated carbon, 7-14 parts of bamboo charcoal, 3-6 parts of kieselguhr, 5-9 parts of bactericide and 100-150 parts of water. The preparation method comprises the steps of 1 raw material preprocessing, 2 raw material mixing, 3 raw material processing, 4 extrusion pelleting, 5 freezing drying, 6 screening and 7 packaging. The natural plant cat litter has the advantages of restraining cat appetite and lowering cat heat intake. In addition, the preparation method has the advantage of increasing the cat water suction amount.

The invention discloses a method for preparing polyurethane foam from curcas oil base rigid foam polyether. Curcas oil is hydroxylated and reacted with epoxide. A synthesis hydroxyl value of rigid foam polyether polyol is 300-550mg KOH/g. Curcas oil base rigid foam polyether polyol, polyether (polyester) polyol, a catalyst 3, a foam stabilizer, water, a foaming agent and isocyanate are stirred uniformly according to a certain proportion to obtain rigid polyurethane foam. The polyurethane rigid foam prepared from polyether polyol containing curcas oil biobase is mainly used in fields of pipeline insulation, refrigerator, freezer, building insulation, sheet material, substrate, solar energy and interior decoration, etc.

The invention relates to an essential oil patch and a manufacturing method thereof. The essential oil patch sequentially comprises a silicon oil paper layer, an essential oil storage layer, a binding layer and a self-heating layer, wherein the essential oil storage layer is used for storing essential oil in a quantitative mode; the binding layer is used for binding; and the self-heating layer is used for taking a heat-insulation effect. The essential oil patch disclosed by the invention can achieve the quantitative release of the essential oil and can keep a lasting effect; and the essential oil patch is conductive to the implementation of various self-help moxibustion therapies, SPA and the like.

The invention discloses a preparation method of a tungsten copper alloy. The preparation method comprises the steps that raw materials are subjected to spheroidizing through plasma, so that the raw materials turn to be spherical from polygonal, the dispersibility is greatly improved, the phenomenon of agglomeration of tungsten powder is reduced, evenly distribution of tungsten copper in the coppercladding process is guaranteed, therefore the surface of tungsten powder is sufficiently coated with copper, a solid phase hot pressing sintering method is adopted to prepare the tungsten copper alloy, in the solid phase hot pressing sintering process, rearrangement occurs when the power is subjected to short-time heat preservation at the temperature of 1100-1200 DEG C, the copper particles are separated from the surfaces of the tungsten particles and work together with the clad copper on the surface of the tungsten powder to improve the wettability of tungsten copper, so that the tungsten copper alloy is densificated in a short period, the tungsten copper alloy is cooled to be 1000-1050 DEG C at the speed of 2-5 DEG C/min, the copper fluidity is reduced, at the moment, the stress is applied so that the copper cannot be effused, and further densification of the tungsten copper alloy is facilitated. The obtained tungsten copper alloy has the fine grain size and uniform tissue due to the low sintering temperature and the short sintering time, meanwhile, the adopted preparation method is simple and convenient, the equipment is the commonly used equipment in the technical field, and therefore industrialized production is facilitated.

The invention provides a splicing container for retaining freshness. The container for retaining freshness comprises a container body for retaining freshness and a container cover matching with each other. The container body for retaining freshness comprises a bottom surface and a side wall. The side wall is of a double-layer structure with an inner side wall and an outer side wall. The inner side wall, the outer side wall and the bottom surface form a cavity for containing thermal insulation materials. The inner layer side wall is formed by splicing inner-layer boards for retaining freshness, and the outer side wall is formed by splicing outer-layer boards for retaining freshness. The inner-layer boards for retaining freshness, the outer-layer boards for retaining freshness and the bottom surface are all spliced to form the container body for retaining freshness. The inner-layer boards for retaining freshness, the outer-layer boards for retaining freshness and the container cover are all formed by waterproof and breathable particles and hydrophobic bonder by means of bonding and curing. Gaps through which gaseous molecules can permeate but liquid water molecules cannot permeate are formed between adjacent waterproof and breathable particles. The splicing container for retaining freshness can be installed in the field as required by the scale and has a good food freshness retaining effect.

The invention relates to the field of waterproof equipment and in particular relates to an environment-friendly sand bag. The environment-friendly sand bag comprises an outer layer bag, wherein a sand bag is arranged in the outer layer bag; the outer layer bag and the sand bag are made of a water-permeable material; the sand bag is filled with a water absorption material; the outer layer bag is covered with a sealed package bag. According to the environment-friendly sand bag provided by the invention, the sand bag is filled with the water absorption material; the package bag is opened to water the outer layer bag, so that the water absorption material in the sand bag is expanded after absorbing water to form the shape of a sand pouch, and then the sand bag is stacked at a required position. The environment-friendly sand bag is light in mass, small in size and convenient to carry, transport and store; furthermore, the water absorption material cannot leak, so that the environment cannot be polluted, and the sand bag is environmentally friendly and practical.

The invention discloses planar polishing equipment for a mobile phone shell, and relates to the technical field of polishing. The planar polishing equipment comprises a bottom plate, wherein the uppersurface of the bottom plate is fixedly connected with the lower surface of the base; the upper surface of the base is provided with a groove; and the right side face of the inner wall of the groove is fixedly connected with a first pressing plate. According to the planar polishing equipment for the mobile phone shell, a dust collection air blower, a connecting tube, a box body, a filter plate, awater pump, a first water pipe, a second water pipe and spray nozzles, water ejected from the spray nozzles can remove water vapor in the gas and some toxic and harmful gas pollutants while dust-containing dust gas particles can be removed at the same time, so that gas in a box body can pass through the filter plate and can be discharged; and crumbs produced by polishing the mobile phone shell body through a polishing wheel can be fallen into a collection box through a through hole, so that the crumbs and the dust can be effectively treated, pollution to an environment is reduced, and moreover, the crumbs and the dust can be effectively collected and also can be conveniently cleared up by the working personnel.

The invention provides an adhesive tape for surface protection of a semiconductor wafer and a method of producing a semiconductor wafer using the same. The adhesive tape for surface protection of a semiconductor wafer is an adhesive tape for surface protection used when the back surface of the semiconductor wafer is grinded. A base material film comprises an adhesive layer which is a radioactive ray cured adhesive layer with a thickness less than protrusions on the surface of the semiconductor wafer. The change rate of adhesive tension acquired by a formula (1) is more than 30 percent. In the formula (1) [T[alpha]- T[beta]]/[ T[alpha]- T[beta] (N2)]*100, T[alpha] represents a measured value of the adhesive tension before the irradiation of the radioactive ray; T[beta] (air) represents a measured value of the adhesive tension after the irradiation of the radioactive ray with irradiation dose of 500mJ/cm2 in the air; T[beta] (N2) represents a measured value of the adhesive tension after the irradiation of the radioactive ray with irradiation dose of 500mJ/cm2 in a nitrogen atmosphere.

The invention provides a grouting material pressure filter testing device and method. The device comprises a grouting module and a testing module. The grouting module provides grout for the testing module through a grouting pipeline. The testing module comprises a testing cylinder. A testing cylinder base is arranged at the bottom end of the testing cylinder. A sealing cover connected with a pressure gauge is arranged at the top end of the testing cylinder. A grouting pipe for being connected with the grouting pipeline is arranged on the side wall of the testing cylinder. A filling medium is distributed in the portion, below the grouting pipe, of the testing cylinder. The upper end and the lower end of the filling medium are provided with water filter stone. The grout is pressed into the testing module through the grouting module and infiltrates the filling medium in the testing module so that testing can be completed. The testing device is small in size, easy and convenient to operate, recyclable and capable of reducing testing cost.

The invention relates to an analysis device and method for directly measuring trace aluminum, silicon, phosphorus, sulphur and chlorine contents in a sample. The device comprises an X ray fluorescenceanalyzer unit (200), a charging unit (100), a sample cup (300) and a control unit, wherein the fluorescence analyzer unit (200) comprises a sample testing cavity (203) capable of carrying out gas filling; the charging unit (100) can controllably carry out air inflation and air exhaust on the sample testing cavity (203); and the control unit controls the analysis device, carries out integration and statistics on collected data, draws a work curve, and carries out calibration and other processing to obtain the contents of each element, including aluminum, silicon, phosphorus, sulphur and chlorine in the tested sample in one time. The analysis device has the advantages that the sample does not need to be subjected to preliminary treatment, and the analysis device is suitable for solid and liquid samples and has the characteristics of being nondestructive, direct, quick, high in sensitivity, low in use cost, convenient in field measurement and the like.

The invention discloses a roller brush with an extrusion and uniform liquid discharging structure. The roller brush comprises a roller capable of being connected onto a bracket, wherein the roller comprises a hollow roller body and a sponge layer covering the roller body; and the sponge layer is in sleeving joint with the roller body. The following technical measures are adopted: at least four rows of liquid discharging holes, which are formed in an equal radian, are formed in the periphery of the roller body; the liquid discharging holes are connected with a unidirectional liquid discharging structure in a matched manner; the unidirectional liquid discharging structure comprises a pulling piece with an opening and closing structure; one side of the pulling piece is connected with the roller body; and the other side of the pulling piece is in clearance fit with the roller body. By virtue of the roller brush, coating contained in the roller brush does not leak randomly when the roller brush is used for brushing a wall body; and the coating only can leak out at the position on which the roller is close to the wall body, and the coating does not leak out when the roller brush is pulled downwards.

The invention relates to a coating method of a non-woven fabric hot melt adhesive tape. The coating method comprises the following steps: (1) recombining for the first time: enabling release paper A and release paper B to be recombined together by utilizing hot melt adhesive, and preserving heat to enable the hot melt adhesive to keep a fluid state, wherein the release force between the release paper B and the hot melt adhesive is less than the release force between the release paper A and the hot melt adhesive; (2) peeling off the release paper B: peeling off the release paper B and the hot melt adhesive to enable one side of the hot melt adhesive to be exposed to become a to-be-recombined surface; (3) recombining for the second time: enabling non-woven fabric and the to-be-recombined surface of the hot melt adhesive to be recombined, cooling simultaneously to enable the hot melt adhesive to be solidified so as to obtain the non-woven fabric hot melt adhesive tape; and (4) rolling-up: rolling-up the obtained non-woven fabric hot melt adhesive tape. The invention further discloses a coating device of the non-woven fabric hot melt adhesive tape, and the obtained non-woven fabric hot melt adhesive tape has the following characteristics: (1) by enabling the hot melt adhesive and the non-woven fabric to be combined together, the dressing meets hydroscopicity and air permeability simultaneously; and (2) as the hot melt adhesive is recombined on the non-woven fabric, not only is the hot melt adhesive difficult to peel off, but also adhesive overflowing cannot happen.

The invention discloses a mixing silicon rubber composition for an anti-dynamic fatigue key and relates to the technical field of rubber. The composition is characterized by consisting of the following components in part by mass: 50 to 80 parts of methyl vinyl silicone rubber crude rubber, 20 to 40 parts of alpha, omega-dihydroxyl polydimethyl siloxane of which the kinematic viscosity is 45,000m m<2>/s, 1 to 3 parts of alpha, omega-dihydroxydimethylpolysiloxane of which the kinematic viscosity is 90m m<2>/s, 20 to 50 parts of white carbon black, 0.1 to 0.5 part of 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane, and 0.01 to 1 part of zinc stearate. By adding dihydroxyl siloxane, the processability of the mixing silicon rubber is improved, and low-molecular-weight cyclosiloxane cannot be oozed after the silicon rubber key is used repeatedly, so that the current conduction obstacles on a part of a pressed point can be avoided.