36results about How to "Resistant to chemical media" patented technology

The invention relates to a water-based cable anti-icing coating containing a water-based perfluoroalkyl fluorocarbon emulsion. ~2.5% water-based polytetrafluoroethylene emulsified wax, 15-20% water-based color paste, 0.1-0.5% pH regulator, 1-2% amino resin cross-linking agent or water-based polyurethane cross-linking agent, 0.1-0.2 % of bactericidal preservative, 1-1.2% of cellulose and the rest of deionized water, wherein the water-based color paste is composed of one color of water-based color paste, or a mixture of any two or more colors of water-based color paste. The invention has a large hydrophobic angle, low surface energy, excellent hydrophobic and oleophobic and anti-contamination properties, safety and environmental protection, and can be firmly attached to the surface of the cable in a low temperature and cold environment, so that it has an obvious anti-icing function.

The invention discloses a brown colorant for water Teflon high-temperature cloth and a method for preparing the brown colorant. The brown colorant is composed of a high-temperature resisting pigment, polytetrafluoroethylene, a functional additive agent, a dispersing wetting agent and deionized water. The materials comprise, by weight percent, 35 to 50 percent of the high-temperature resisting pigment, 10 to 20 percent of the polytetrafluoroethylene, 5 to 10 percent of the functional additive agent, 2 to 20 percent of the dispersing wetting agent, and the balance of deionized water. The brown colorant can be prepared through mixing and grinding all the constituents and implementing quality test, vacuum defoamation and filtering packing. The brown colorant for the water Teflon (PTFE) high-temperature cloth by the method is characterized by long storage stability, good temperature resistance (reaching to more than 400 DEG C), excellent chemical resistance, bright color, good compatibility with PTFE emulsion and high color intensity. The grain diameters can realize that D99 is less than or equal to 5 microns (namely, the average diameter of 99 percent of the grains is less than or equal to 5 microns), and the brown colorant and the method conform to national environmental requirements because the deionized water is taken as base material. The brown colorant has the advantages of simple preparation process, low preparation cost and easy industrialized production.

A material for shielding incident sound waves contains PVC (5-60 wt%), tungsten powder (10-90), and assistant (5-30). Its advantages are better mechanical and sound shielding performance, high resistance to fire and chemical corrosion, high machinability, and no poison. Its sound shielding index can reach 22.7 db.

An RIIR / REPDM elastomer and a preparation method thereof, relating to a regenerated butyl rubber and a preparation method thereof, the waterproof material RIIR and REPDM are combined with a total amount of 100 parts, 1-2 parts of sulfur, and 0.9-2 parts of an accelerator. 2.5-8 parts of vulcanization active agent, 0-20 parts of carbon black. Both RIIR and REPDM have good process compatibility. Adding part of REPDM to RIIR can not only obtain better comprehensive performance, but also improve the machinability of RIIR. The two glues can use the same vulcanization system, and the vulcanization rate is relatively close, and it is easy to form co-vulcanized materials. The present invention uses RIIR and REPDM to completely replace EPDM and IIR, which reduces the cost of waterproof materials, improves the adhesion between waterproof materials and substrates, and makes the RIIR / REPDM waterproof materials obtained in the final research have ozone resistance, weather resistance, and Low temperature, chemical medium resistance, heat air aging resistance and other excellent properties.

The invention belongs to the paint technical field, in particular relates to a waterborne polyurethane modified epoxy steel structure anti-corrosive paint and a preparation method thereof. The component A of the paint is a dispersion of modified E-20 and the component B used as curing agent is a waterborne dispersion which is prepared through modification by using epoxy and hydrophilic groups. The system has the advantages of common waterborne paints, overcomes the defects of the waterborne epoxy anti-corrosive paint and has the advantages of polyurethane and epoxy materials. The waterborne epoxy anti-corrosive paint prepared by using the system as the base material has great development prospect in the field of steel structures such as bridges, pipes, containers, industrial plants and public facilities.

The invention provides a wood-plastic sectional material that is synthesized by fast-growing wood veneer, corner offal of artificial boards that take the fast-growing wood as raw material and water-soluble phenol aldehyde resin adhesive and produced through production procedures of material selection-treatment-drying-gumming-gelatin-mould pressing-solidifying-post solidify. The density of the sectional material is 900-1300Kg / m<3>, the hardness is 55-120MPa, the scale length is 500-5000mm, the width is 100-1300mm, the thickness is 15-200mm, 24-hour absorbing water thickness expansion rate is 0.6-3 percent and the formaldehyde release quantity is less than 1.5MG / L. The invention enhances the utilization of the fast-growing wood and the wood-plastic sectional material produced has high density and is a high quality material with the advantages of waterproof, heatproof, oil proof, age resistant, fungus resistant, chemical mediator resistant and better security, thereby being applicable to being used for making furniture, floor, decoration material, building moulding board, structure parts, motherboard of containers, track ties, and so on. The invention can also promote the utilization of the fast-growing wood and virtuous circle of the utilization of the wood, thereby having great environmental protection value.

A soft composition with ultrahigh specific weight for isolating sound and reducing noise contains high-molecular polymer (5-30 wt.%), tungsten powder (10-90), plasticizer (3-10), stabilizer (1-5) and coupling agent (1-10). Its advnatages are high sound isolating and mechanical performance, high resistance to fire and chemical corrosion, no poison and high machinability.

The invention relates to a temperature sensing device of a storage battery, which is characterized by comprising a shell (3), a sealing cover (4), a lead (5) and a sensing chip (1); the sensing chip (1) is located at the bottom of the shell (3), the upper end of the sensing chip (1) is provided with a chip pin, and the chip pin and the lead (5) form a welding part (2) of the chip pin and the lead in a welding manner; one part of the lead (5) passes through the temperature sensing device, and the part passing through the temperature sensing device is provided with a shrinkable tube (7); and the shell (3) is internally provided with an encapsulating material (6). The temperature sensing device solves the problem of low accuracy of the current temperature sensing device of the storage battery, and can be widely used in temperature test for acid containing liquid, wherein a temperature test range is from -55 DEG C to +125 DEG C; and in addition, the digital temperature sensing device needs no signal processing circuit, and the output signals can be shared by a plurality of control devices.