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 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 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 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 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.