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446results about How to "Barrier entry" patented technology

Antirust and preparation method and application thereof

The invention discloses an antirust and a preparation method and an application thereof. The antirust comprises corrosion inhibitor, film-forming agent, dispersant, synergist with active groups on the surface, and solvent; the weight ratio of the corrosion inhibitor, the film-forming agent, the dispersant and the synergist with the active groups on the surface is 1:0.005 to 0.5:0.002 to 0.4:0.001 to 0.3, and the weight ratio of the solvent to the corrosion inhibitor is 100:0.01 to 50. Modifier is added into the antirust disclosed by the invention to carry out surface modification treatment on the synergist, so that the surface of the synergist is grafted with the active functional groups, such as -OH and -NH3, consequently, the binding force between the antirust and a base material is enhanced, the antirust time is prolonged, and thereby the antirust effect is enhanced. The antirust disclosed by the invention is basically applicable to the surfaces of various iron-based, aluminium-based and copper-based materials, moreover, brushed, sprayed or immersed base materials have excellent corrosion resistance, durability and high adhesive force; the process of the preparation method is mature, the production cost is low, the production process is green and harmless, and therefore the preparation method is suitable for popularization and application on a large scale.
Owner:上海特德拉化工有限公司

Traditional Chinese medicine protective mask filter element capable of filtering PM2.5

The invention belongs to the technical field of mask filter elements and particularly relates to a traditional Chinese medicine protective mask filter element capable of filtering PM2.5, which comprises three layers of structures, including a spunbond non-woven fabric layer, an activated carbon fiber non-woven fabric layer and a lining cotton textile layer from outside to inside in sequence, wherein all the layers are adhered to one another through hot melt adhesive; non-setting adhesive is arranged at the periphery of the outer side of the lining cotton textile layer; the activated carbon fiber non-woven fabric layer is prepared through the method that a traditional Chinese medicine mixed extracting solution is sprayed onto an activated carbon fiber non-woven fabric. The traditional Chinese medicine protective mask filter element capable of filtering PM2.5 is simple in structure, low in cost and simple to manufacture, has high filtration and absorption effects, adopts a traditional Chinese medicine nursing leaching solution, and can moisten and protect lung and treat respiratory diseases; besides, the hot melt adhesive is applied to connecting of the mask filter element and a mask main body for the first time, the operation is simple and convenient, the efficiency is improved and resources are saved.
Owner:BINZHOU UNIV +1

Centrifugation and dynamic adsorption combination oil-water separation device

The invention relates to a centrifugation and dynamic adsorption combination oil-water separation device, and belongs to the field of oil pollution treatment. The centrifugation and dynamic adsorptioncombination oil-water separation device mainly comprises a motor, a rotating device, an oil-water separation device, an oriented nanofiber oil conveying pipe and a collection device. According to thecentrifugation and dynamic adsorption combination method, by use of the principle that oil is light and water is heavy and combination of oleophylic and hydrophobic modification of a fiber membrane,efficient oil-water separation of oil-containing sewage is realized under the action of centrifugal force. The oil-containing sewage in an emulsified state is demulsified through a demulsification filter net membrane, and then enters nanofiber oil adsorption cotton which is of a fluffy space structure, is irregularly arrayed and has high oil adsorption rate, with water blocked outside; the oriented nanofiber oil conveying pipe is embedded into the fiber cotton, so that the adsorbed oil dirt can be sucked out in time under the action of the gravity or external suction, and is conveyed into an oil storage barrel, and then the oil adsorption capacity of the nanofiber oil adsorption cotton is recovered. According to the centrifugation and dynamic adsorption combination oil-water separation device disclosed by the invention, oil-containing sewage treatment which has high separation efficiency and separation capacity and can repeatedly use oil is finally realized.
Owner:BEIJING UNIV OF CHEM TECH

New energy battery explosion-proof valve

The invention discloses a new energy battery explosion-proof valve, which comprises a main valve body, a seal ring, a piece of explosion-proof membrane paper, a membrane paper protection plate and a protective cover, wherein a membrane paper mounting platform is arranged at one side of the main valve body; the explosion-proof membrane paper is welded on the membrane paper mounting platform in a hot melting manner; an annular bump is arranged on the outer circumference of the membrane paper mounting platform; the membrane paper protection plate is arranged in the annular bump; a protective bottom plate is arranged at the lower part of the membrane paper mounting platform; the protective bottom plate is provided with an explosion-proof pointed cone toward the explosion-proof membrane paper; the protective cover is arranged out of the protective bottom plate; the seal ring is arranged between the outer surface of the annular bump and the main valve body; the main valve body is movably connected with a battery shell through the annular bump; and the main valve body and a battery shell are sealed through the seal ring. The new energy battery explosion-proof valve has the advantages of being simple in structure, low in cost, dustproof, waterproof, explosion-proof and breathable, and can balance internal pressure and external pressure of a sealed accommodating cavity of a battery.
Owner:惠州市沃瑞科技有限公司

Permeable concrete and preparation technology and laying technology thereof

The invention discloses permeable concrete and a preparation technology and laying technology thereof. The concrete is characterized by comprising a base layer and a surface layer protection layer arranged on the base layer, the base layer is prepared from, by weight, 140-160 parts of water, 360-390 parts of cement, 20-30 parts of fly ash, 1,600-1,900 parts of gravel, 5-10 parts of white earth, 1-2 parts of polyacrylonitrile-based carbon fiber, 1-2 parts of kaolin and 6-12 parts of additive special for the permeable concrete. The permeable concrete comprises the base layer and the surface layer protection layer, the base layer has the good structural strength, and by means of the surface layer protection layer, on one hand, the wear-resisting property of materials can be enhanced; on the other hand, partial impurities can be blocked to enter the base layer, and the phenomenon that cleaning is difficult due to the fact that holes of the base layer are blocked is reduced; the fly ash added in the base layer can enhance the structural strength of the base layer; by adding the white earth, on one hand, partial matter can be decomposed, and on the other hand, the strength of the base layer is enhanced; the polyacrylonitrile-based carbon fiber can also enhance the structural strength of the base layer.
Owner:四川通德商品混凝土有限公司

Waterborne inorganic heat-insulating, waterproof and environment-friendly coating for buildings and preparation method of coating

The invention discloses a waterborne inorganic heat-insulating, waterproof and environment-friendly coating for buildings and a preparation method of the coating, and relates to the technical field of building materials. The invention provides the waterborne inorganic heat-insulating, waterproof and environment-friendly coating for the buildings, which are good in heat-insulating and heat-preserving and waterproof performances, strong in bonding force and resistant to wear. The environment-friendly coating is prepared from a binding agent, a film-forming additive, a heat-reflecting filler, a heat-insulating filler and water; the preparation method disclosed by the invention comprises the following steps: weighing raw materials; adding a dispersing agent into water and uniformly stirring; adding a silicate solution, an alkyl-modified silicate solution, a silicone acrylic emulsion, a silane coupling agent and a leveling agent and uniformly stirring; adding silica aerogel, kaolin, a heat-insulting filler and an inorganic pigment and uniformly stirring; filtering to obtain waterborne inorganic heat-insulating, waterproof and environment-friendly coating for the buildings. The coating disclosed by the invention has the advantages of heat insulation, heat preservation, water resistance, good binding force with cement, tiles and metals, scratch resistance, fastness, greenness, environmental protection and the like.
Owner:湖南众雄工程有限公司
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