216results about How to "Barrier delivery" patented technology

The invention relates to a high-performance halogen-free flame retardant ABS modified resin and a preparation method thereof. The resin comprises the following components with the content (in parts by weight): 100 ABS resin, 4-30 polyamide, 5-25 phosphate fire retardant, 0.1-0.5 anti-drippage agent, 5-10 toughening agent, 1-5 nano filler, 1-5 compatilizer, 0.2-1 antioxidant, 0.1-0.5 light stabilizer and 1-5 processing agent. Compared with the prior art, the invention has reasonable technique, and overcomes the defects of poor flame retardant property and low impact strength of the existing halogen-free flame retardant ABS; and the invention adopts a novel high-efficiency halogen-free flame retardant compounding synergism technology, a novel polyamide coal-forming agent, the high-efficiency synergism between organic and inorganic fire retardants, and the master batch method processing technique, thus endowing the resin with high fire resistance on the basis of improving the original good performances (especially the impact performance) of the ABS resin, and having wide application prospect.

The invention relates to a preparation method of ceramizing fire-resistant silicon rubber. The rubber comprises the following components in parts by weight: 100 parts of methyl vinyl silicon rubber, 20-50 parts of white carbon black, 2-10 parts of hydroxyl silicone oil, 1-5 parts of a coupling agent, 25-100 parts of ceramizing powder, 2-5 parts of a heat stabilizer, 10-40 parts of a fire retardant, and 1-2 parts of a vulcanizer. The preparation method includes the following steps: adding the methyl vinyl silicon rubber in a kneading machine; then adding the white carbon black and the hydroxyl silicone oil; mixing for 30 minutes at the temperature of 80 DEG C; then adding the coupling agent, the ceramizing powder, the heat stabilizer and the fire retardant; mixing for 1-1.5 hours; raising the temperature to be 100 DEG C and keeping high vacuum for 30 minutes; and after cooling to room temperature, adding the vulcanizer on an open mixing machine for mixing to obtain the ceramizing fire-resistant silicon rubber. The rubber has good mechanical property and electrical property at normal temperature, does not contain halogen, is smokeless and non-toxic during combustion, can be extinguished quickly and forms a ceramizing shell to guarantee integrity of the inside.

The invention relates to a high molecular material of the halogen-free fire retardant sheath for wire cable and the application thereof. The invention solves the problem of bad fire retardant performance of the existing flame-retardant wire cable. The high molecular material of the invention is characterized in that the material comprises the following components by weight: a) 8-50 per cent of halogen-free expansive flame retardant pretreated by coupling agent occupying 0.1-3 wt per cent of the halogen-free expansive flame retardant; b) 0.5-10 per cent of graft polymer of the polar compound; c) 5-30 per cent of inorganic padding pretreated by coupling agent occupying 0.1-3 wt per cent of the inorganic padding; and d) at least one organic polymer for the rest.

The invention discloses a fire resistant coating for a composite steel structure and a preparation method thereof. The fire resistant coating comprises the following ingredients: organic-inorganic nano hybridized resin, organic resin, ceramic filling material, foaming agent, carbon forming agent, catalyst and ferric permanganate. The fire resistant coating has the advantages of simple and convenient painting, excellent fireproof performance, little smoke generation, large foaming intensity and the like. Generally, the coating is used for brushing 3-5 times, the thickness is controlled to be 0.3-1.8 mm, and the duration of fire resistance can reach to 30-240 min.

The invention discloses a high-flame-retardance modified nitrile rubber cable material. The raw materials of the high-flame-retardance modified nitrile rubber cable material comprise the following components: nitrile rubber, natural rubber, fluorinated silicone rubber, attapulgite, nano-calcium carbonate, nano-zinc oxide, zinc methacrylate, modified ammonium polyphosphate, dipentaerythritol, aluminium hydroxide, hydrotalcite, polyethylene-graft-maleic anhydride, polydimethylsiloxane, benzoyl peroxide, 2,5-dimethyl-2,5-di(tert-butylperoxy) hexane, lignin, acrylate rubber, accelerant, plasticizer and antiager. The high-flame-retardance modified nitrile rubber cable material disclosed by the invention is good in flame retardance and high in strength, and the cable produced from the high-flame-retardance modified nitrile rubber cable material is long in service life.

The invention relates to a heat preservation and insulation heavy duty anti-corrosion coating with low thermal conductivity and a preparation method thereof. The heat preservation and insulation heavy duty anti-corrosion coating comprises phenolic epoxy resins, porous aerogel, inorganic pigment fillers, a surfactant, a solvent and auxiliary agents. The preparation method comprises the following steps: 1) adding the surfactant into a solution of the phenolic epoxy resins and uniformly dispersing the surfactant; 2) adding the porous aerogel, carrying out stirring, and carrying out high speed dispersion at first and ultrasonic dispersion next; 3) adding an antifoaming agent, a dispersant, an adhesion promoter and a thixotropic agent, and carrying out dispersion; 4) sequentially adding the inorganic pigment fillers, and carrying out high speed dispersion until the particle size of the coating is less than 80 mu m so as to obtain the coating. The coating provided in the invention has good corrosion resistance, temperature resistance, insulating properties and adhesiveness, has thermal conductivity of 0.04 w/m.k and can be extensively used in high temperature pipelines of chemical plants and power plants, in storage equipment for oil products and in housing of transportation pipelines; the preparation method is simple and is easy for industrial production.

The invention discloses flame-retardant viscose fiber and a preparation method thereof. The flame-retardant viscose fiber mainly comprises the following components in percentage by weight: 20 to 55 percent of polysilicic acid (based on SiO2), 0.5 to 10 percent of pyrophosphoric acid ester and 40 to 70 percent of cellulose. The preparation method comprises the following steps of: (1) adding a solution of sodium metasilicate and a solution of pyrophosphoric acid ester into a yellowed cellulose viscose solution respectively, and uniformly mixing the sodium metasilicate, the pyrophosphoric acid ester and cellulose viscose to obtain a flame-retardant spinning viscose solution; (2) performing spinning molding on the flame-retardant spinning viscose solution in coagulating bath containing sulfuric acid, zinc sulfate and sodium sulfate to obtain as-spun fiber; and (3) after-treating the as-spun fiber, namely washing, desulfurizing, applying oil and drying to obtain the flame-retardant viscose fiber. The synergistic effect of silicon and phosphorus flame retardants greatly improves the flame-retardant effect and high temperature resistance of flame-retardant fiber and the textile processing performance of fabrics.

The invention discloses an aerogel material-containing high efficiency liquid composition extinguishing agent and its preparation method and use. The high efficiency liquid composition extinguishing agent comprises aerogel powder, water, a surfactant, a fire extinguishing enhancer and a stabilizing agent. The aerogel powder is used in the extinguishing agent so that in fire extinguishing, the aerogel powder and extinguishing agent produce interaction and the product well covers the surface of a substrate and can effectively obstruct heat transmission and prevent flame propagation and heat transfer. In fire extinguishing, the aqueous extinguishing agent system does not undergo a chemical reaction, does not produce heat and prevents secondary fire hazard. The liquid composition extinguishing agent utilizes a simple air-atomizing technology, is prepared through simple equipment and can be operated easily. The liquid composition extinguishing agent has extremely low organic component content, can effectively control organic matter release and combustion in fire extinguishing, does not produce harmful gas and does not release powder.

The invention discloses a self-cleaning and heat-insulating coating and a preparation method thereof, belonging to the coating preparation field. The coating comprises the following components by mass: 5-20% of aqueous acrylic resin, 40-50% of aqueous elastic resin, 15-30% of titanium powder, 2-10% of nanometer titanium dioxide, 2-10% of silica aerogel, 0.7-3% of assistant, 0.5-10% of film-forming assistant and 5-10% of water. Due to the addition of nanometer titanium dioxide, in the coating, photocatalysis can be realized so as to decompose attached fouling, thereby achieving self-cleaning effect, and heat insulation can be realized by silica aerogel. The coating can effectively block heat transfer, and simultaneously achieve photocatalysis to decompose attached fouling so as to achieve the self-cleaning effect, thus ensuring heat insulation effect and keeping clean decorative effect of the coating for long period.

The invention discloses a double-cooling radiation test system and method. The double-cooling radiation test system is formed by a main cooling system, a water sleeve cooling system, a secondary cooling system, and matched purification and water supplementary systems. The main cooling system is a high-temperature high-pressure circuit and can be operated independently; the water sleeve cooling system belongs to a low-temperature low-pressure circuit and can be operated independently; the main cooling system and the water sleeve cooling system can be operated in parallel at the same time. The main cooling system and the water sleeve cooling system carry out independent cooling cycle flowing, heat generated in a pressure pipe is carried out by main cooling water, and heat generated outside the pressure pipe is discharged out by water sleeve cooling water. Otherwise, the main cooling system is static or microflows, and heat inside and outside the pressure pipe is carried away through thecircular flow of the water sleeve cooling system. The double-cooling radiation test system and the method provided by the invention are applied to a nuclear material and fuel element in-pile steady-state irradiation test, a power transient test, a fuel damage test, an in-pile water chemical corrosion test, isotopic irradiation production and the like.

The invention discloses a polyhydroxy-substituted aromatic Schiff base synergistic halogen-free and flame-retardant nylon 6 composition and a preparation method thereof. The raw material formula of the nylon 6 composition comprises, by mass, 68.5-75.8% of nylon 6, 5.0-8.0% of a polyhydroxy-substituted aromatic Schiff base, 12.0-15.0% of ammonium polyphosphate with a high polymerization degree, 3.0-8.0% of a polyolefin grafted maleic anhydride compatibilizer, 0.1-0.3% of an antioxidant and 0.1-0.2% of a lubricant. The flame-retardant nylon 6 is formed by compounding the polyhydroxy-substitutedaromatic Schiff base with the ammonium polyphosphate with the high polymerization degree; and when the total amount of the two components is 20.0 wt%, the nylon 6 can pass UL94V-0@3.2 mm flame-retardant level, is resistant to dripping, and can well keep the rigidity of pure nylon 6 and have good mechanical performances on the premise of achieving the V-0 flame-retardant level.

The invention discloses an inner door sealing structure of fridge, which comprises the following parts: air bag, assembling foot on the door of fridge, wherein the inner door seal is set at inner side of main door seal; the fin is set on the external end face of air bag to seal; the thickness of root of fin is less than the thickness of wing part. The invention seals the inner door of fridge effectively without insufficient elastic and weak adaptation problem, which improves the energy-saving effect of fridge greatly.

The invention provides environment-friendly flame-retardant hard polyurethane foaming plastic. Polyisocyanates, polyether polyol, a foaming agent, a foam stabilizing agent, a catalyst, glycerinum and a flame retardant are taken as raw materials, wherein the flame retardant is synthesized novel halogen-free flame retardant 1-butyl-3-methylimidazole dibutyl ester ionic salt ([Bmim]DBP); the polyether polyol, the foaming agent, the foam stabilizing agent, the catalyst, the glycerinum and the flame retardant are uniformly stirred and mixed in a certain ratio at the room temperature in a high-speed dispersing machine, are further stirred and mixed uniformly with polyisocyanates added in a certain ratio, are subjected to foam molding in a mold, and are aged, so that the environment-friendly flame-retardant hard polyurethane foaming plastic can be obtained.

The invention relates to electrically heated laminated glass. The electrically heated laminated glass comprises a first glass unit and a second glass unit, wherein the first glass unit includes a first inner surface and a first outer surface opposite to the first inner surface; the first inner surface is close to the second glass unit; the electrically heated laminated glass further comprises a film layer; a conductive film layer is formed on the first inner surface of the first glass unit; and the film layer is located between the conductive film layer and the second glass unit. The electrically heated laminated glass provided by the invention has the advantages of being safe and reliable, and adjustable in temperature control.

The invention discloses a multifunctional door and window profile with ventilation, noise elimination and heat resistance functions, which comprises a profile body, wherein the profile body is provided with a wind inlet communicated with outdoor air and a wind outlet communicated with indoor air; a ventilating channel communicated with the outdoor air and the indoor air is formed in cavities of the wind inlet, the wind outlet and the profile body; the ventilating channel is internally provided with an air door and a sound absorption module; and the profile body is internally provided with a heat insulating bridge formed by a heat insulating module. The profile body is provided with the wind inlet and the wind outlet which are communicated with the outdoor air and the indoor air so that the door and window profile has the function of ventilation; meanwhile, the profile body is internally provided with a rotatable air door; the air inlet quantity is controlled by adjusting the open degree of the air door; the profile body is also internally provided with the sound absorption module and the heat insulating module; and the ventilating quantity and requirements of people for indoor noise reduction and heat insulation are also met. The multifunctional door and window profile has the advantages of simple structure, low cost and attractive appearance.

The invention discloses reflective insulation flexible imitation stone and a preparation method thereof, belongs to the technical field of building materials and relates to imitation stone. The reflective insulation flexible imitation stone comprises a bottom main material layer, a middle decoration layer and a surface glaze layer. An adhesion agent layer is sprayed between the decoration layer and the main material layer, and the decoration layer is coated with the glaze layer. The main material layer comprises a base body, a fiber layer is arranged on the bottom of the base body, and gridding cloth is arranged in the middle of the base body. The decoration layer is a quartz sand layer subjected to mixing with an infrared reflection pigment at a high temperature. The glaze layer is formed by mixing resin, an assistant, functional padding and a pigment. The reflective insulation flexible imitation stone has a very high reflective insulation function, high in flexibility and crack resistance, high in hardness and cleanliness and easy to cut and install.

The invention discloses a high-thrust carrier rocket low-temperature final-stage storage-tank connection support structure design method. The method specifically includes the steps of 1), material selection, namely selecting carbon fiber composite materials having higher strength and lower thermal conductivity in 20K-90K low-temperature zones on the basis of the ratio of the strength to the thermal conductivity; 2), preliminary structure style design, namely performing five kinds of preliminary structure designs by taking structure strength and heat flow restrictions into consideration; 3), strength and weight analysis, namely, performing analysis on tensile stress, compression stress and buckling factors under the condition of bearing big load of tensile and compression; 4), heat analysis, namely selecting a structure style lowest in heat flow rate in structure styles meeting requirements of strength in the step 3). By optimization of the method, the high-strength carbon fiber composite materials are used in V-shaped 20-bar structure design of a low-temperature tank of a carrier rocket, and requirements of the ascent stage the high-thrust carrier rocket on large load are met.

The invention discloses a high temperature fan which needs no passing water and can effectively prolong the bearing service life, which comprises a motor mounted on a support, the support is fixed on the inner side of a mounting panel, the inner side of the mounting panel is also provided with a mounting seat, the motor drives a main shaft through a drive device, the main shaft is support in the mounting seat through a pair of bearings, and another end of the main shaft passes through the mounting panel and is provided with an impeller. an air inlet is disposed on the external side of the impeller and is fixed on the mounting panel through a sleeve, the outside of the mounting panel is also provided with a thermal insulation layer; the main shaft in the mounting seat is also provided with a strong cooling fan blade, and the side wall of the mounting seat is provided with an air vent. The invention is suitable for multiple industry heat treatment furnaces.

The invention discloses a high-efficiency high-temperature print head supporting multiple printing materials. The print head comprises a driving device, a circular water-cooling system, a material inlet, a high-pressure protection gas inlet pipe, a high-temperature liquid cavity and a heating device; the high-temperature liquid cavity is formed by a crucible; two filter layers are arranged in the high-temperature liquid cavity; multiple spraying holes are formed in the bottom of the high-temperature liquid cavity; a coaxial protection gas shield is arranged outside the high-temperature liquid cavity; a gas uniformizing sheet is arranged between the coaxial protection gas shield and the high-temperature liquid cavity; the heating device is arranged on the outer part of the coaxial protection gas shield; protection gas is introduced into the coaxial protection gas shield; and the material inlet is used for injection printing materials. The print head can be used for printing of metal or other materials which need to be molten at high temperature; the print head is provided with multiple spraying holes; the structure is compact; and the working efficiency can be improved. Different driving positions can be provided by the print head, so that the print head can be applicable to printing of different materials, and meanwhile, the print head is also applicable to printing of the same material with different liquid drop sizes.

The invention provides a lightweight autoclaved foam concrete block and a production method thereof. The block comprises production raw materials of a dry material, water and foaming agent, wherein the dry material consists of the following components in percentage by mass: 9-15 percent of ordinary Portland cement, 20-30 percent of blast furnace slag micro-powder, 55-65 percent of aggregate and 0.2-1 percent of coagulating thickener; the coagulating thickener comprises aluminum sulfate and soda ash; the aluminum sulfate is 50 percent of the total mass of the coagulating thickener; the soda ash is 50 percent of the total mass of the coagulating thickener; the mass ratio of the water to the dry material is 0.4-0.6; and 0.8-1.6 kg foaming agent is used in each cubic meter of mixture of the water and the dry material. The block and the method have the benefit that the foaming agent of foam concrete is applied in the production technique of an aerated concrete block, so that the problems of weak strength, large air shrinkage, easiness in surface pulverization and the like in the foam concrete are solved. As the cement dosage of the foam concrete is reduced, the raw material cost is effectively reduced, and the social benefits of waste utilization and environmental friendliness are achieved.

The invention provides an organic light emitting device and a manufacturing method therefor. The organic light emitting device comprises: a substrate; an organic light emitting layer which is formed on one side of the substrate; a nanometer porous heat blocking layer which is formed on one side of the organic light emitting layer facing away from the substrate, wherein the nanometer porous heat blocking layer and the substrate encapsulate the organic light emitting layer together; pores with a diameter smaller than 100 nm are uniformly distributed in the nanometer porous heat blocking layer; the porosity of the nanometer porous heat blocking layer ranges from 20% to 50%; and light emitted by the organic light emitting layer passes through the nanometer porous heat blocking layer and is radiated outside the organic light emitting device. The organic light emitting device further includes an encapsulation layer which is formed on one side of the nanometer porous heat blocking layer facing away from the organic light emitting layer. According to the organic light emitting device of the present invention, the pores with the diameter smaller than 100 nm are uniformly distributed in thenanometer porous heat blocking layer, since the nanometer-sized pores have a very high transmittance for visible light, collision probability between gas in the pores is reduced, thereby providing heat-blocking function.