4results about How to "Powder free" patented technology

The application discloses a kind of special fluorosilicone modified acrylic coatings of anti-fouling and anti-aging unique framework and a preparation method thereof, for the defects of traditional fluorosilicone modified acrylic coatings, such as single molecular framework, difficult to consider anti-fouling and anti-aging performance, poor synergistic effect, etc., by designing the unique three-dimensional molecular framework of "acrylic main chain-fluorosilicone branch-crosslinking framework", optimizing the formula, and using efficient controllable polymerization process, the special fluorosilicone modified acrylic coatings of anti-fouling and anti-aging unique framework is prepared.The formula includes 48-68 parts of unique framework fluorosilicone modified acrylic copolymer, 19-29 parts of anti-fouling and anti-aging pigment and filler and other environmentally friendly components, realizes the synergistic effect of fluorosilicone and the double improvement of anti-fouling and anti-aging, has excellent performance such as surface energy ≤26 mN / m, VOC ≤40 g / L, artificial accelerated aging ≥2000 h, outdoor service life ≥20 years, is convenient to operate and controllable in cost, is suitable for high-end outdoor special coating scenes such as building exterior wall and high-end venue, and can widely replace traditional outdoor coatings.

The application discloses a composite protection structure suitable for cement alkaline porous characteristics and a preparation method, and belongs to the technical field of cement product marine protection. The application aims to solve the technical problems of weak combination of the existing coating and the cement base material, poor alkali resistance, insufficient synergy of corrosion resistance and biological adhesion resistance. The protection structure is a four-layer gradient structure from inside to outside, which is a silane modified cement base layer, a composite rust prevention layer, a composite bonding layer and a wear-resistant biological surface layer, and precisely adapts to the characteristics of the cement base material. The preparation method integrates cold spraying and induction heating processes, and takes into account the coating density and the feasibility of on-site construction. The bonding strength of the protection structure and the cement base material is greater than or equal to 4.5 MPa, the salt spray corrosion resistance is more than 2200h, the marine biological adhesion area is less than or equal to 1.0%, the mass loss after freeze-thaw cycles (100 times) is less than or equal to 1.0%, and the wear resistance is less than or equal to 0.03g / cm 2 , and the cement alkaline environment serves for 18 months without powdering and cracking, and can be widely applied to cement products such as marine piles, fenders and breakwaters.

The invention belongs to the field of hydrogen storage materials, and provides a hydride hydrogen storage material and a preparation method thereof. According to the preparation method, a block material is prepared through discharge plasma sintering forming by adopting a multi-level collaborative design of a reactive composite hydride phase formed by magnesium hydride and lithium borohydride, an ordered mesoporous carbon and hexagonal boron nitride composite carrier structure, an atomic layer deposition oxide coating layer, a niobium pentoxide and titanium hydride catalyst and a heat-conducting outer coating; the comprehensive performance that the reversible hydrogen storage mass fraction is 5.5-7.0 wt%, the capacity retention ratio after 50 times of circulation is larger than or equal to 90%, and the temperature gradient in the block is smaller than or equal to 10 DEG C / cm is achieved, and the multiple contradictions between the high hydrogen storage capacity and the block mechanical strength, between the oxide coating layer stability and the hydrogen diffusion rate and between the heat conduction uniformity and the structural integrity are solved. The method has a wide application value in a solid hydrogen storage system.

The application discloses a composite powder reinforced radiation refrigeration coating and a preparation method thereof, and relates to the technical field of coating.The multistage surface modification functional powder, the water-based polyurethane resin and the polyisocyanate curing agent are used, the problems of unbalanced radiation refrigeration performance, slow drying speed, poor mechanical performance and environmental stability, and insufficient weather resistance of the existing coating are solved, the application scenarios of efficient cooling, weather resistance, corrosion resistance and long-term stable service are met, and the coating can be widely applied to the fields of building outer walls, metal components, cold chain equipment, outdoor facilities and the like.