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61results about How to "Improve waterproof and antifouling performance" patented technology

Composite cross arm and manufacturing process thereof

The invention discloses a composite cross arm and a manufacturing process thereof. The composite cross arm comprises an insulating core rod, an umbrella skirt and connectors, wherein the umbrella skirt is fixedly arranged on the insulating core rod; the connectors are fixedly connected to the two ends of the insulating core rod; the insulating core rod has a D-shaped cross section and comprises a resin fiber composite layer which is manufactured by a pultrusion winding process; the umbrella skirt is fixedly poured on the composite layer; and surface coatings are coated on the outer surfaces of the composite layer and the umbrella skirt respectively. Since the core rod which is made of the resin fiber composite material is adopted by the cross arm, the cross arm has light weight and better insulation performance and mechanical performance; and the cross section of the insulating core rod is D-shaped, so that the cross arm has the advantages of capability of preventing ash deposition, convenience in mounting and the like. The fixedly poured umbrella skirt is made of an outdoor resin material; and since the outdoor resin material has superior weather resistance and good mechanical performance, corrosion resistance and water-proof and anti-fouling performance, a person can step on the umbrella skirt to operate during construction, and meanwhile, the damage caused by worms and birds is avoided.
Owner:STATE GRID CORP OF CHINA +3

Universal waterproof disinfection box for interventional robot

The invention relates to a universal waterproof disinfection box for an interventional robot. The universal waterproof disinfection box comprises a sterile box body, a sterile box cover, a catheter driving assembly and a guide wire driving assembly, wherein a Y-shaped valve assembly is arranged at one end of the sterile box body, one end of a Y-shaped valve fixing piece rotates at one end of the sterile box body, and the other end of the Y-shaped valve fixing piece is magnetically connected with the sterile box body; a meshing through hole is formed in the middle of the Y-shaped valve fixing piece, a wheel shaft at the bottom of a Y-shaped valve driving gear rotates in a shaft hole, a wheel shaft gear matched with a motor output gear in a propelling mechanism is arranged at the bottom of the wheel shaft, the Y-shaped valve driving gear is located a meshing through hole, and two or more groups of Y-shaped valve clamping pieces can be connected to form an arc-shaped piece of a ring; a gear ring meshed with the Y-shaped valve driving gear is arranged on the ring; and one end of a Y-shaped valve body is fixed in the Y-shaped valve clamping pieces through an elastic filler, and the other end of the Y-valve body is fixed to the Y-shaped valve fixing piece. Therefore, Y-valve bodies of different specifications can be used, catheters of different specifications can be mounted, the catheters can rotate, and the universal use of an interventional radiography and treatment operation disinfection box is achieved.
Owner:BEIJING WEIMAI MEDICAL EQUIP CO LTD

Preparation method of polishing cloth for polishing and grinding lens of high-precision camera

The invention relates to the technical field of preparation of damping clothes, specifically to a preparation method of a polishing cloth for polishing and grinding a lens of a high-precision camera.The method comprises the following steps: preparing mixed polyurethane slurry; dipping in water; ironing; covering; solidifying; fully washing with water; drying and sizing; coiling; polishing; separating, and the like. According to the method, the raw material components of the mixed polyurethane slurry are reasonable; the added additive is prepared by mixing glycerinum, ethidene diamine and liquid paraffin; glycerinum and ethidene diamine are both chain extenders and can react with a functional group on a polymer chain to extend a molecule chain and increase the molecular weight, thus the polyurethane is promoted to size, and the stress at definite elongation and the wear resistance of the damping cloth can be greatly improved; glycerinum has melting prompting effect and coordinates withthe liquid paraffin to act to reduce the surface tension of the mixed polyurethane sizing, so that the leveling property and the uniformity can be improved, and the surface of the prepared damping cloth is flat, smooth and uniform; the waterproofing and dirt preventing performances of the damping cloth are improved by the liquid paraffin.
Owner:ANHUI HECHEN NEW MATERIAL CO LTD

Low-melting-point glass glaze for sealing bottom of low-expansion ceramic liner and preparation method and application of low-melting-point glass glaze

The invention relates to a low-melting-point glass glaze for sealing the bottom of a low-expansion ceramic liner and a preparation method and application of the low-melting-point glass glaze. The low-melting-point glass glaze is mainly prepared from the following raw materials in percent by mass: 26-30% of spodumene, 2-5% of petalite, 5-8% of aluminum oxide, 11-15% of quartz sand, 15-19% of magnesium oxide, 5-8% of boron anhydride, 6-10% of zirconia, 3-6% of minium and 2-5% of cerium oxide. The glass glaze has the advantages of low softening and solidifying temperatures and a low expansion coefficient which is matched with the expansion requirement of the low-expansion ceramic liner at the same time, so that the requirements of bottom sealing of the low-expansion ceramic liner are met, andthe glass glaze is durable and resistant to ablation, aging, detaching, melting and the like which are caused by high temperatures brought by various heating methods; in addition, no dissolved matteris generated during the application of the glass glaze, and the glass glaze has high applicability, brighter appearance and good waterproof and antifouling performance, and is healthier and more environmentally friendly, so that the problems that during the application of an organic coating and a water repellent agent, peeling off or generating of dissolved toxic matter occurs, and the organic coating and the water repellent agent cannot be cured simultaneously with decals and stuck water level lines are solved, and the production efficiency is improved.
Owner:湖南嘉盛电陶新材料股份有限公司

Synthesizing method for acrylate copolymers with hydrophobicity

ActiveCN109134741AEfficient removalAvoid the disadvantage of low polymerization conversion rateEmulsionSeparation technology
The invention discloses a synthesizing method for acrylate copolymers with hydrophobicity. A small amount of compound emulgator and co-stabilizer is used for making acrylate monomers form uniform andstable miniemulsion. A miniemulsion polymerization method is adopted for obtaining acrylate copolymer emulsion, and after polymerization is finished, through a separation technology of demulsificationcohesion and many-time dissolution-sediment circulating operation, the acrylate copolymer with hydrophobicity is obtained. No obvious emulgator residues are contained in the obtained copolymer, the purity and hydrophobicity performance of the acrylate copolymers with hydrophobicity are improved, the using amount of fluorine-containing monomers is reduced, and the cost is reduced; a polymerizationsite of miniemulsion polymerization is oily monomer drops, it is avoided that in the conventional emulsion polymerization process, acrylate monomers need to be diffused to solubilizing micelles through an aqueous phase, the polymerization conversion rate of the fluorine-containing acrylate monomers with hydrophobicity is effectively improved, the discharging amount of fluorine-containing monomersis reduced, and environmental pollution is reduced. The synthesizing method has a good application prospect in the field of water-proof antifouling paint.
Owner:SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING

Wear-resistant and cold-proof school uniform

The invention discloses a wear-resistant and cold-proof school uniform. The wear-resistant and cold-proof school uniform comprises reflective strips, wear-resistant edges, elbow and knee wear-resistant blocks, a student information card, a school badge, a waterproof layer, a woven mesh layer, a heat preservation air cushion layer, a cotton cloth layer, a flannelette layer and wear-resistant pads.Wherein the elbow and knee wear-resistant blocks are arranged at the elbow joint parts of sleeves of the school uniform; a school uniform fabric is composed of the waterproof layer, the woven mesh layer, the heat preservation air cushion layer, the cotton cloth layer and the flannelette layer, and the wear-resistant pads are arranged on the surface of the fabric at the elbow and knee wear-resistant blocks; the heat preservation air cushion layer is located in a middle layer of the school uniform fabric; and the heat preservation air cushion layer is composed of a top rubber layer, a bottom rubber layer, an isolation rubber net and heat preservation air bags, the isolation rubber net is arranged between the top rubber layer and the bottom rubber layer, and the isolation rubber net divides aspace between the top rubber layer and the bottom rubber layer into the multiple heat preservation air bags. The wear-resistant and cold-proof school uniform has the characteristics that the tensileductility is strong, the heat preservation effect is good, the light reflection angle is increased, the travel safety of students is ensured, easily-consumable parts are wear-resistant and durable, and the waterproof and anti-fouling effects are good.
Owner:凤台县画锦服装有限公司

Surface wrinkled fiber type material and preparing method thereof

The invention relates to a surface wrinkled fiber type material and a preparing method thereof. The method comprises the steps that firstly, coating liquid made of resin and a diluent is prepared; secondly, a material is soaked in the coating liquid and then is taken out to be dried; and a material with the surface coated with a coating is obtained; and thirdly, the material with the surface coated with the coating is subjected to plasma treatment to obtain a surface wrinkled material. A fiber with the wrinkled surface is composed of a fiber base body and the resin coating liquid coating whichcoats the surface of the fiber base body, a wrinkled structure is annularly mounted on the fiber surface in the length direction of the fiber, the contact angle between the surface wrinkled fiber fabric made of the fiber and the water is larger than 150 degrees, the rolling angle is smaller than 10 degrees, the surface wrinkled fiber fabric has super-hydrophobicity, according to the method, the material waterproof and antifouling property can be improved, and the surface wrinkled fiber type material has the wide application prospect in the fields of functional garments, outdoor supplies, military protection garments, photoelectricity and the like.
Owner:DONGHUA UNIV

Hydrophobic coating for power transformation equipment and preparation method thereof

The invention provides a hydrophobic coating for power transformation equipment and a preparation method thereof and belongs to the technical field of hydrophobic materials and a preparation method thereof. The hydrophobic coating for power transformation equipment is prepared from 50 to 70 parts by weight of methyltriethoxysilane, 20 to 40 parts by weight of a phosphate-modified acrylic emulsion, 10 to 18 parts by weight of a solvent, 5 to 12 parts by weight of a filler, 3 to 9 parts by weight of a dispersant and 5 to 12 parts by weight of a film-forming agent. The methyltriethoxysilane and the phosphate-modified acrylic emulsion as main raw materials are processed to form the hydrophobic coating with good hydrophobic performances by a sol-gel method. The surface energy of the hydrophobic coating is low, a static contact angle of a water droplet on the surface of the hydrophobic coating is 160 degrees or more, water resistance is good, the layering, shedding or blistering phenomenon after long-term use is avoided, and acid and alkali resistance is good. The hydrophobic coating is suitable as hydrophobic paint of electrical equipment and improves the waterproof and antifouling performances of the electrical equipment.
Owner:STATE GRID HENAN ELECTRIC ZHOUKOU POWER SUPPLY
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