41results about How to "Good physical barrier" patented technology

The invention discloses a film-coated aluminum plate for a laptop case. The film-coated aluminum plate comprises a passivated aluminum substrate, wherein a coating layer and a graphene oxide-water soluble organosilicon modified acrylic resin coating layer are sequentially laminated on the front surface and the back surface of the passivated aluminum substrate; then an adhesive layer, a film-coated layer and a protection coating layer are sequentially laminated on the graphene oxide-water soluble organosilicon modified acrylic resin coating layer which is laminated on the front surface; the coating layer is a film prepared from a chromic acid chemical pretreatment solution; the adhesive layer is prepared from a polyurethane adhesive; the film-coated layer is a PVC (Polyvinyl Chloride) and PET (Polyethylene Terephthalate) composite colorful film. A preparation technology comprises the following steps: coating; drying; coating the graphene oxide-water soluble organosilicon modified acrylic resin coating layer; coating a PET film; coating the protection coating layer. The film-coated aluminum plate disclosed by the invention is good in insulativity and thermal conductivity, higher in hardness, not easy to deform, decolor or degum, and good in protectiveness.

The invention discloses a water-based nanosheet composite coating, and belongs to the field of water-based coatings. A urushiol derivative is used as a modifier in the raw material components of the product to anchor and modify the two-dimensional nanosheets, so that the two-dimensional nanosheets are effectively dispersed in the water-borne epoxy resin, and the modified nanosheets can fully play a maze effect when the coating is used, so that a good physical barrier effect is achieved; the path of a corrosive medium entering the coating is greatly prolonged; in addition, catechol groups contained in the urushiol derivative can effectively passivate the protected metal and alloy, so that a compact oxidation film is formed on the surface of the metal and alloy, and the metal substrate is effectively protected. The invention further discloses a preparation method and an application of the water-based nanosheet composite coating.

The invention discloses a nano-material-loaded aramid-coated battery separator, which comprises a polyolefin porous separator and an aramid coating coated on one side of the separator, wherein the aramid nanofibers of the aramid coating are loaded with nanomaterials. The invention also discloses a preparation method of the separator and a lithium-sulfur battery with the separator. The aramid coating of the present invention has good thermal stability and electrolyte affinity, and the loaded nanomaterials can inhibit the shuttle of high-level lithium polysulfide chains and promote the mutual conversion of high-level lithium polysulfide chains; The adopted preparation method can ensure the uniform distribution of the nanomaterials and increase the specific surface area of ​​the nanomaterials. By assembling the separator in a lithium-sulfur battery, the specific capacity and cycle stability of the lithium-sulfur battery can be improved.

The invention discloses an environmental protection type single-layer PET (Polyethylene Terephthalate) colored film-covered steel plate, which comprises a steel plate base material, wherein chemical coatings and graphene-water soluble organic silicon modified acrylic resin primer layers are stacked in sequence on both the front surface and the back surface of the steel plate base material; a PET film is pasted on the graphene-water soluble organic silicon modified acrylic resin primer layer of the front surface; afterwards, a PE (Polyethylene) protecting film is pasted on the PET film. A preparation process of the environment protection type single-layer PET colored film-covered steel plate comprises uncoiling, sewing, washing, oven-drying, chemical coating, the oven-drying, primer coating, oven-drying solidification, PET film covering, cooling and PE protecting film covering. According to the film-covered steel plate provided by the invention, PVC (Polyvinyl Chloride) layers are replaced by adopting graphene-water soluble organic silicon modified acrylic resin primer; the film-covered steel plate has decorative attractiveness, favorable corrosion resistance and physical and mechanical performance at the same time, and accords with the development direction of an environment-friendly material.

This technical solution discloses a method for preparing a flexible packaging film. By directly coating a graphene-silane coating on the surface of an aluminum alloy foil, the coating formed by combining graphene with silane has excellent film-forming properties, mechanical properties and corrosion resistance. , and there are both organophilic and inorganic functional groups in the silane molecule, which can firmly combine the two materials with very different properties, organic materials and inorganic materials; thus effectively improving the corrosion resistance of the packaging film property, interlayer composite stability, etc.; and the preparation method described in this technical solution is to directly carry out graphene-silane coating coating on the aluminum alloy foil, without any passivation treatment on the aluminum alloy foil, so as to avoid When the aluminum alloy foil is passivated, the pollution caused to the environment, and the aluminum alloy foil is directly coated with graphene-silane coating, which saves the process and production time, and greatly improves the production efficiency. efficiency.

The invention relates to a microwave preparation method of a flower-shaped hydroxyapatite coating on the surface of a magnesium alloy. The pretreated magnesium alloy sample is soaked in a conversion coating solution, and the conversion coating solution is placed in a microwave chemical reactor , heating the conversion coating solution to boiling and keeping it for 2-10 minutes; then immediately take out the coated magnesium alloy sample, rinse it with deionized water, and dry it. The hydroxyapatite coating is a flower-like structure formed by clusters of hydroxyapatite nanorods, the length of the nanorods is 300-900nm, and the diameter of the nanorods is 30-90nm. The thickness of the coating is 2-10 μm. The nanostructured hydroxyapatite coating not only improves the biological activity of magnesium alloys, but also improves the corrosion resistance of magnesium alloys in simulated body fluids. The preparation process of the coating is simple, economical and environmentally friendly, and has great commercial promotion value.

A titanium dioxide nanowire reinforced corrosion-resistant ceramic coating and a preparation method thereof belong to the technical field of metal ceramic coatings. The coating raw materials are as follows: nano-additives, ceramic aggregates, curing agents and binders, wherein the nano-additives are modified titanium dioxide nanowires. In the present invention, titanium dioxide nanowires are prepared by a thermal reaction method, further modified by heptadecafluorodecyltrimethoxysilane, and added to the bonding ceramic coating as a nano-additive, and cured to obtain a corrosion-resistant ceramic coating. Compared with the reinforced ceramic coating without titania nano-additives and the same content of titania nanoparticles, the titania nanowire reinforced corrosion-resistant ceramic coating of the present invention has good hydrophobic properties and the ability to resist electrolyte penetration, and can delay the diffusion of corrosive media speed, thereby protecting the substrate from damage and extending the service life of the metal substrate, broadening the application field of the coating in harsh environments.