4 results about "Active passive" patented technology

The invention belongs to the technical field of metal anticorrosive coating materials, and particularly relates to a super-hydrophobic composite coating and a preparation method thereof. According to the invention, MoS2 is used as a skeleton, CeO2 nanoparticles are uniformly loaded on the surface of a MoS2 two-dimensional layered structure, polydopamine is used as a connecting agent to form a stable Ce-MoS2 composite filler, and an active and passive protective layer with the Ce-MoS2 composite filler is constructed on the surface of a matrix and is used as a bottom layer. And then, forming a hydrophobic coating containing modified SiO2 on the bottom layer to serve as a surface layer, so as to obtain the super-hydrophobic composite coating with double protection mechanisms. According to the coating, the active corrosion inhibition function of CeO2 and the physical shielding effect of MoS2 are combined, meanwhile, hydrophobic SiO2 nano-particles are introduced into the surface layer, the hydrophobic performance of the surface is further enhanced, and therefore the technical problems that a traditional coating is prone to corrosion at the defect position and a corrosive medium is prone to permeation, and consequently the protection effect is remarkably reduced are effectively solved.

The invention relates to the technical field of water-based paint, in particular to water-based industrial anti-rust paint for steel components and a preparation method of the water-based industrial anti-rust paint. The problems that existing water-based industrial anti-rust paint is insufficient in anti-rust performance and weak in mechanical performance are solved. According to the invention, a phosphate group and graphene are simultaneously bonded to an epoxy resin molecular chain to form synergy of chemical anchoring and physical shielding; an organic-inorganic interpenetrating network structure is formed by using a water-based polyamide curing agent modified by an organic silane coupling agent, so that the mechanical property of a coating film is remarkably improved; by introducing the self-crosslinking acrylate emulsion with a core-shell structure, the brittleness problem of a pure epoxy system is avoided, and a formed interpenetrating polymer network structure can further enhance the compactness of a coating film; the functional conductive polymer aqueous dispersion is added and forms active-passive electrochemical synergistic protection with the zinc-aluminum phosphate composite pigment; and the zinc-aluminum phosphate composite pigment and the glass powder are compounded, so that the anti-rust performance is improved.

This invention discloses a hydraulic control system and method for a deep-sea hoisting hook-type active-passive wave compensator, belonging to the field of hydraulic control technology for deep-sea engineering equipment. The system includes actuators, passive control, active control, buffer control, an accumulator, and a power module. The actuator consists of a passive wave compensation cylinder and symmetrically arranged active wave compensation cylinders. The passive cylinder bears the main load and achieves passive compensation via a gas-loaded accumulator. When the compensation accuracy is insufficient, the active control module controls the active cylinder through a servo valve based on wave detection signals to achieve high-precision composite compensation. The buffer control module provides throttling buffer protection at the end of the passive cylinder's stroke. The accumulator module uses a radar sensor to monitor the piston position and adapts to the optimal compensation stroke for different water depths. The power module provides a high-pressure oil source. This invention combines low energy consumption and high precision, adapts to changes in water depth, switches smoothly, and is easy to maintain, making it suitable for complex sea conditions such as deep-sea hoisting and installation of seabed facilities.

The invention belongs to the technical field of novel building materials, and discloses a waterproof nano material with high oil-gas permeation resistance and a preparation method of the waterproof nano material. The material is composed of an active silicon source, a gas barrier crystallization component, an organic-inorganic composite sealant, a permeation and form control agent, a carrier and a stabilizer, and is prepared through the processes of step-by-step synthesis, sequential addition and low-temperature blending. According to the invention, an active-passive synergistic protection system is constructed by utilizing the molecular sieving effect of a metal organic framework material (ZIF-8) and the'nano labyrinth 'structure of layered double hydroxide (LDH) nanosheets in cooperation with the adsorption-catalysis function of hydrophobic modified zeolite, and the problems of poor compatibility, low barrier efficiency and easy failure of the existing material are solved. The product has the characteristics of excellent oil-gas permeation prevention performance, long-acting active protection, good matrix compatibility, environmental protection, no toxicity and the like, can be widely applied to oil-gas permeation prevention protection of concrete structures, and is particularly suitable for facilities such as oil-gas storage, gas stations, chemical plants and the like.