1854results about How to "Improve friction resistance" patented technology

The invention discloses a preparation method for high-wave permeability and super-hydrophobic moisture-proofing coating for an antenna housing material. The preparation method is characterized by comprising the following steps of: preparing hole-sealing emulsion; preparing super-hydrophobic moisture-proofing emulsion; coating the hole-sealing emulsion on the antenna housing material, surface-drying the film coating under a room temperature, and then curing the film coating under the temperature of 100 DEG C to 140 DEG C; cooling and immersing the film coating to the super-hydrophobic moisture-proofing emulsion; surface-drying the film coating under the room temperature, and curing the film coating under the temperature of 80 DEG C to 160 DEG C to acquire the high-wave permeability and super-hydrophobic moisture-proofing coating for the antenna housing material. Micron-level silicon dioxide and fluorine-containing polymer are used in the method to perform accumulating and hole-sealing;a micron surface structure with certain roughness is provided, and epoxy resin with good viscosity is added to the hole-sealed coating, so that the mechanical property of the hole-sealed coating is improved; a self-growth method is adopted for depositing micron-level fluorine-containing polymer, which is in-situ packaged by organic silicon resin and attached with hydrophobic nanometre silicon dioxide, to the surface of the hole-sealed coating, so that the high-wave permeability and super-hydrophobic moisture-proofing coating of the antenna housing material is prepared.

The present invention discloses a graphene-modified fluororesin coating material, which comprises a film forming substance, commonly used additives, a solvent and graphene, wherein the amount of the added graphene is 0.001-10% of the mass of the fluororesin coating material, the fluororesin coating material is further added with the first additive and the second additive, and the addition amount of the first additive and the second additive is 0.1-3.5% of the mass of the fluororesin coating material. According to the present invention, the graphene is adopted to improve the strength of the fluororesin coating material, wherein the friction resistance, the adhesion of the fluororesin coating material and the substrate, the impact resistance and the thermal conductivity of the fluororesin coating material are significantly increased; and the fluororesin coating material has characteristics of low cost, less use amount, durable effect and simple and convenient use, and can be used in a plurality of fields of building industry, household non-stick cookware, marine life fouling resistance fields, high temperature resistance fields, national economy and national defense construction fields and the like.

The invention discloses an intumescent flame retardant coating gum and the application thereof on fabric finishing. When the traditional intumescent flame retardant is applied to fabric, the fabric is not resistant to water rinse, water immersion or transfer, the flame retardant can lose or degrade under the action of luminous rays, heat, moisture and mechanical external force, and the flame retardant properties are reduced. The intumescent flame retardant coating gum comprises a flame retardant coating base gum and a carbon source, and is characterized in that the flame retardant coating base gum is prepared by mixing ammonium polyphosphate, melamine and 4A zeolite, adding organic alcohol, coating the mixture by more than two silane coupling agents for modification, drying the mixture after removing the organic alcohol to obtain a composite flame retardant, adding water, a non-ionic surface active agent, a binding agent and a cross-linking agent to the composite flame retardant, and grinding and dispersing the mixture; the carbon source is aqueous polyacrylic ester containing hydroxyl groups or aqueous polyurethane containing hydroxyl groups or a modifier of the former two. The invention obviously improves the performance of the flame retardant coating gum on flame retardant fabric for resistance to water rinse, transfer, light, heat and friction.

The invention provides a preparation method of a super-hydrophobic coating layer. The preparation method includes the steps of: 1) according to mass percentage of a final solution, dissolving 0.5-10% of hydrophobic nano particles and 1-15% of hydrophobic resin in a solvent, performing ultrasonic dispersion for 15-60 min to obtain a mixed solution; 2) forming the mixed solution on the surface of a substrate material and in internal microstructures of the substrate material; 3) naturally air-drying the substrate material to form the super-hydrophobic coating layer. According to the method, the preparation process of the coating layer is free of assistance of external equipment, such as heating and the like, so that the method is simple and low-cost. The method can achieve preparation of the super-hydrophobic coating layer on various fiber surfaces and porous material surfaces, has excellent universality and is easy to achieve in industrial large-area preparation.

The invention relates to a graphene-modified wear-resistant rubber. The graphene-modified wear-resistant rubber comprises, by weight, 48.9 to 56.5% of synthetic rubber, 1.5 to 2.5% of a sulfuration promoter, 8 to 18% of graphene, 25 to 30% of a filling material, 1.5 to 5% of a plasticizer and 0.1 to 3% of an auxiliary agent. According to the invention, graphene is added into the rubber so as to improve strength of the rubber, and since graphene has good lubrication effect, wear resistance of the rubber can be improved; and addition of asbestos fiber and polyimide fiber enables heat resistance of the rubber to be substantially improved.

A novel lubricant composition is disclosed. The lubricant composition comprises at least one organic compound, and, when disposed between two surfaces moving at peripheral speeds differing from each other, is capable of exhibiting a discotic columnar phase or a discotic lamellar phase in which a plurality of molecules of said organic compound is assembled.

A aluminum-based alloy self-lubricating materials and method for making same relates to the technology for preparing composite metal materials. Aimming at the evil of large gas cavity amount in aluminum-based alloy self-lubricating materials, there is disclosed a aluminum-based alloy self-lubricating materials and method for making same. Said scheme is as follows: selecing aluminium alloy as a basal body alloy, adding a slipping agent into the aluminium alloy fused mass, wherein said slipping agent is composed of one of copper facing mineral carbon or one mixture of copper facing mineral carbon and copper facing carbon fabric or one mixture of copper facing mineral carbon and nickel plating carbon fibre and is prepared through stirring-mixing, vacuum outgassing and casting, and the basal body aluminium alloy comprises (based on mass percent) Si of 6.5-9.0, Mg of 0.8-1.2, Mn of 0.1-0.5, Ti of 0.1-0.25, Zn of not more than 0.3, Fe of not more than 0.5, Cu of not more than 0.3, Ni of not more than 0.1, in which the allowance is Al. The weight of the added substance is 7-12%, 10-18% and 10-17 of the total weight of the aluminum-based alloy respectively when copper facing mineral carbon, the mixture of copper facing mineral carbon and copper facing carbon fabric and the mixture of copper facing mineral carbon and nickel plating carbon fibre are adopted. There is less gas cavities existing in said material.

The invention discloses filtering materials with polyphenylene sulfide fiber and the usage of the filtering materials. The filtering materials are composed of three layers of a filtering veneer, a non filtering veneer and a middle fabric reinforcing layer, wherein the filtering veneer is a fiber netting which is composed by mixing the fiber with 30wt% to 70wt% of which the average diameter is below 10 micrometers and the fiber with 30wt% to 70wt% of which the average diameter is 10 to 20 mum, the non filtering veneer is a fiber netting formed by fiber of which the average diameter is above 20 micrometers, and the middle layer is the fabric reinforcing layer. At least the fiber of the filtering veneer and the non filtering veneer employ the polyphenylene sulfide fiber within the filtering materials which form the filtering veneer, the non filtering veneer and the middle fabric reinforcing layer. The products of the invention have the advantages of high efficiency of dust arrestment and perfect frictional resistance, and can be used as the materials of filtering bags.

The invention aims to provide an acrylic acid modified alkyd resin which is improved in hardness, dryness, abrasion resistance and aging resistance and also maintains particular flexibility, pigment wettability and the like. Simultaneously, the acrylic acid modified alkyd resin provided by the invention solves the problem that the common acrylic acid modified alkyd resin in the market is poor in acid and alkali resistance. The acrylic acid modified alkyd resin provided by the invention is characterized that a paint film is free of bubbling, rusting, crazing and falling in 48 hours when being measured through a liquid medium resistance experiment according to GB / T 9274-1988; and the acrylic acid modified alkyd resin is obviously superior to the traditional soybean oil alkyd resin and the common acrylic acid modified alkyd resin.

The invention discloses a room-temperature self-crosslinkable styrene-acrylic emulsion resistant to ethanol dilution and a preparation method for the same. The room-temperature self-crosslinkable styrene-acrylic emulsion resistant to ethanol dilution comprises the following components: styrene, an acrylate monomer A, an acrylate monomer B, a hydrophilic monomer, a crosslinking monomer, an emulsifier, an initiator, a pH value buffer, a neutralizer and water; and in the preparation method disclosed by the invention, the room-temperature self-crosslinkable styrene-acrylic emulsion resistant to ethanol dilution is prepared by adding a seed emulsion and using semicontinuous polymerization process. The acrylate monomer A containing a long-chain ester group is added during synthesis, so that the prepared styrene-acrylic emulsion can be directly diluted by adding ethanol; and the crosslinking monomer is added during synthesis, so that the solvent resistance, wear resistance and drying speed of emulsion dry film can be improved and increased. The room-temperature self-crosslinkable styrene-acrylic emulsion resistant to ethanol dilution disclosed by the invention can be used for preparing water-based ink and water-based gloss oil satisfying medium-speed and high-speed printing requirements.