309results about How to "Reduce surface friction coefficient" patented technology

The invention discloses a PVC (polyvinyl chloride) decorative film surface treating agent and a PVC decorative film treated with the same. The surface treating agent comprises the following components in percentage by weight: 80.0-92.0% of water-based polyurethane emulsion, 2.0-4.0% of flatting agent, 0.5-1.5% of defoaming agent, 0.5-1.0% of hand feeling agent, 4.0-8.0% of curing agent, 0.1-0.3% of scraping inhibitor, 0.3-1.3% of leveling agent and 2.0-10.0% of water. The PVC decorative film treated with the surface treating agent has the advantages of excellent matte performance, scraping resistance, favorable compatibility with other decorating materials, and the like, and feels soft.

The invention discloses a chemical mechanical polishing solution containing polishing particles, oxidizer, water and one or more components in the following surface friction conditioning agents: water soluble poly-fatty chain polymers, water soluble alcohols, water soluble ethers and water soluble fibers. The polishing solution of the invention can lower the coefficient of surface friction and reduce the defects (scratch, corrosion, superficial particles, and the like) of the surface of a polished substrate.

The invention belongs to the field of rubber materials and relates to a graphene-containing fluororubber nanocomposite with low gas permeability and a preparation method, in particular to a nanocomposite formed by graphene and fluororubber. The graphene-containing fluororubber nanocomposite with low gas permeability comprises the fluororubber, the graphene, carbon black, graphite, an acid acceptor and a vulcanizing agent. The graphene is subjected to pre-dispersing treatment, and the dispersity of the graphene in the fluororubber is improved. The unique lamellar structure of the graphene can form a grid structure in the fluororubber to block gas effectively. The graphite has similar lamellar structure and is mixed with the graphene for combined action, so that gas grids in different sizes can be formed in the material, and the gas permeability of the material is reduced. A low-speed blender is adopted to perform pre-dispersing treatment on powder, and through mechanical agitation and interaction of the powder, the dispersity is improved while the lamellar structure of the graphene is guaranteed.

The invention discloses a construction process for coating faced concrete outside an ultrahigh steel tube column after a floor is closed. The procedures of the construction process comprise template processing and manufacturing, steel bar binding, template installing, concrete pouring, template dismantling and concrete curing. A template uses stereotyped cylindrical wood plywood, and the inner side of the template adopts a 801 glue to stick an endurance plate with the thickness of 0.8 mm. The steel bar binding adopts non-embroidered binding silk, the head of the binding silk faces to the inner side of a steel bar, and the binding silk on the outer side is subjected to round hook pressing processing. Template reinforcing adopts a stereotyped flat steel bar hoop, the first segment of concrete is poured after the first segment of template is installed, and the self-compacting faced concrete is adopted. The second segment of template is installed before the initial setting of the first segment of concrete, then the second segment of concrete is poured, and the pouring of column concrete is sequentially completed. The template dismantling is as follows: the flat steel bar hoop of the reinforced template is dismantled firstly, the template is lightly knocked, so that the template is naturally separated from the concrete, and the segments of column templates are dismantled from top to bottom. After the template is dismantled, a plastic film and a blanket are adopted to package and cover the concrete for moistening maintenance 14d.

The invention relates to metal surface treatment, in particular to surface treatment of low-temperature iron-base alloy molds of sliding components, bearings and the like and provides a diamond-like carbon film of a gradient structure and a preparation method of the diamond-like carbon film of the gradient structure. The diamond-like carbon film of the gradient structure is provided with a coating structure comprising a pure metal layer, a first gradient transition layer, a metal nitride layer, a second gradient transition layer, a tungsten carbide, a third gradient transition layer and a surface layer. The surface layer is a diamond-like layer or a silicon-containing type diamond layer. According to the diamond-like carbon film of the gradient structure, gradient control over elasticity modulus and hardness is achieved through ingredient gradient control between all the layers, and therefore the film-substrate cohesion force and the delaminating resistance of the coating are greatly improved.

The invention discloses a flame-retardant polycarbonate composition. The flame-retardant polycarbonate composition comprises the following components in part by mass: 100 parts of polycarbonate, 0.2-0.5 part of a hindered phenolic antioxidant, 0.2-1 part of a phosphite-type antioxidant, 0.2-0.4 part of polytetrafluoroethylene anti-dripping agent, 0.2-1.5 parts of an organic sulphonate flame retardant and 0.5-2.5 parts of an organosilicone flame retardant. By the synergistic flame-retardant effect of the organic sulphonate flame retardant and the organosilicone flame retardant which are compounded at a mass ratio of 2-3: 5 for use and optimizing the content of each component, the flame retardancy of polycarbonate is increased and the original mechanical property and heat resistance of polycarbonate are kept.

The invention relates to a surface plating composite coating process for a die. The process comprises the steps that the die which is treated through the plasma nitriding process is polished and cleaned, and then is clamped; the die is placed into multi-arc ion coating equipment for coating process treating; and plasma nitriding and CrN+Al coating are combined, and meanwhile the effects of two treatment processes are optimized. The surface plating composite coating process has the characteristics of being low in process temperature, high in processing efficiency, small in die deformation and low in energy consumption. An obtained die composite coating has the characteristics of being high in usability, high in hardness, toughness and abrasive resistance, and excellent in high-temperature oxidation resistance. The surface friction coefficient of the die can be effectively lowered, the service life of the die is prolonged, production cost is reduced and product competitiveness is improved. The process is suitable for cold-work die steel with high abrasive resistance requirements and capable of bearing large impact loads, particularly suitable for treatment of the dies like a punching die, stamping die, cold heading die and cold extruding die in the field of automobiles and also suitable for further application and popularization.

The invention relates to modified thermoplastic polyurethane which is prepared by blending the components in weight ratio: 62-76 parts of thermoplastic polyurethane, 7.6-37 parts of ultra high molecular weight polyethylene, 3.8-9.3 parts of surface lubricant, 1.5-6 parts of compatibilizer and 0.2-0.4 part of stabilizer. Compared with the prior art, the modified thermoplastic polyurethane has the advantages that the ultra high molecular weight polyethylene (UHMWPE) material is taken as a modifier with low friction coefficient; as a synergistic assistant, the modified thermoplastic polyurethane is simultaneously added with the surface lubricant so that the surface friction coefficient of thermoplastic polyurethane (TPU) is lowered simultaneously and the processability is also improved; by the suitable formula and the blending modification of the materials, the friction coefficient of the TPU is lowered.

The invention discloses a cutting blade with an improved coating structure and a manufacturing method of the cutting blade. The cutting blade comprises a matrix A and a coating deposited on the matrix A. The coating is a multi-layer coating and at least comprises an inner layer C and an outer layer D. The inner layer C is composed of carbon-nitrogen oxide of transition elements of the IV B group or carbonitride of transition elements of the IV B group. The outer layer D is a (TiaAlb)(CiNjOk) layer, the thickness of the outer layer D is 1-20 [mu]m. Both the inner layer C and the outer layer D are of face-centered cubic structures. The manufacturing method comprises the steps of manufacturing the matrix A, selectively depositing a transition layer B, depositing the inner layer C, selectively depositing a transition layer E, depositing the outer layer D, and conducting surface treatment. The cutting blade is good in tenacity, abrasion resistance and oxidation resistance, the cutting blade has excellent cutting performance in machining of materials such as steel and stainless steel, and the manufacturing method is simple, convenient to implement, and easy to operate and control.

The invention discloses an assembled half-exposed framework high-pressure seal ring, which not only can seal in a rotating way, but also can seal in a reciprocating way. The seal ring includes a rubber body with a sealing lip, a metal framework vulcanized in the rubber, and a half-exposed framework, a pressure bearing ring taking a metal or non-metal composite material and a spring that are assembled on the rubber body. The half-exposed framework, the composite material pressure bearing ring and the rubber body of the seal ring are designed in an assembling way; and the composite material pressure bearing ring is arranged between the half-exposed framework and the sealing lip, and the pressure bearing ring bears a large amount of working pressure. The assembled half-exposed framework high-pressure seal ring has extremely high high-pressure resistance, outstanding and stable extrusion resistance, excellent heat dissipation and friction lubricating property, good eccentricity adaptability, extremely long service life, simple process, and efficient and stable machining.

The invention belongs to the field of machining cutting tools, and relates to an AlNbCN multielement gradient composite coating tool and a preparing method thereof. The coating tool sequentially comprises a tool base body, a Ti transition layer, an AlNbC transition layer and an AlNbCN multielement gradient composite coating with the nitrogen content gradually changing in a gradient manner from interior to exterior, and the coating tool is prepared in a middle-frequency magnetron sputtering and arc plating composite coating method. According to the AlNbCN ultrahard carbohydrates and nitrogenous compound coating, due to the fact that the Al element and the Nb element are added in the coating at the same time, and the content of the nitrogen which is the structure component of the coating gradually changes in a gradient manner, thecutting machining performance of the tool can be improved. The AlNbCN multielement gradient composite coating tool has very high hardness and strength, low surface friction coefficient, good high-temperature oxidization preventing performance and excellent friction abrasion characters. In the cutting process, tool surface friction and cuttings bonding can be reduced through the tool, the cutting force and the cutting temperature can be reduced by 45% or above, the heat stability of the coating tool is improved by 65% or above, the service life of the tool is prolonged by 60% or above, and durability of the tool is improved by 60% or above.

The invention provides durable carbon black conductive complex fiber and a manufacturing method thereof. The complex fiber comprises a functional layer and a protective layer, wherein in a circle O2 of the cross section of the complex fiber, the functional layer comprises a part surrounded by three equilong circular arcs L1, L2 and L3 and the periphery of the circle O2; the three equilong circular arcs respectively pass through three equidistant points on a concentric circle O1 of which the radius is smaller than that of the circle O2; and the three equilong circular arcs are non-intersected mutually. The preparation method of the conductive fiber comprises the following steps: evenly mixing conductive carbon black and an additive; then adding fiber-forming high polymer to prepare conductive master batch; and after drying the master batch, preparing the conductive complex fiber from the master batch and the fiber-forming high polymer by a spinning and drafting one step method. Due to the cross-section structure with the special design of the conductive complex fiber, the carbon black in the fiber can not peel off easily, so that the durability is improved. Simultaneously, the mechanical properties of the fiber are improved, and the surface friction coefficient of the fiber is reduced, thereby improving the post processing performance and being more favorable for use for customers.

The invention discloses a high-hardness and anti-impact PMMA/ABS (Polymethyl Methacrylate/Acrylonitrile Butadiene Styrene) composite sheet material. The high-hardness and anti-impact PMMA/ABS composite sheet material is prepared from the following components in parts by weight: 10 to 50 parts of PMMA resin, 20 to 70 parts of ABS resin, 1 to 15 parts of MBS (Methacrylate-Butadiene-Styrene) resin, 0.5 to 3 parts of polyester grafted modified silicone auxiliary agent, 0.2 to 0.8 part of compatilizer, 0 to 0.5 part of dispersant, 0 to 1 part of antioxidant and 0 to 0.3 part of ultraviolet absorbent UV-531. The high-hardness and anti-impact PMMA/ABS composite sheet material disclosed by the invention combines advantages of two types of plastic and makes up the respective disadvantages; the PMMA and the ABS are commixed and other additives are added; compared with common PMMA resin, the surface hardness of the obtained PMMA/ABS material is improved by 20 percent to 30 percent; meanwhile, the PMMA has a more excellent anti-impact performance; the polyester grafted modified silicone auxiliary agent is added into to the PMMA raw material so that the surface scraping resistance, abrasion resistance, smoothness and hydrophobic property of the PMMA are improved and surface friction coefficients are reduced; an anti-scratching protection layer does not need to be arranged on the surface of a PMMA plate, so that the process can be effectively simplified, the production efficiency is improved and the production cost of enterprises is reduced; meanwhile, the high-hardness and anti-impact PMMA/ABS composite sheet material has a good ultraviolet-proof performance and the service life of the sheet material is prolonged.

The invention relates to a lability antiblocking light-settability resin composition, a solidified antiblocking structure coated on basis materials and a preparation method. The invention provides a film which prevents adhension between laminas of thermoplastic films, namely blocking, and a sandwich, a technology for improving glidability. The lability antiblocking light-settability resin composition of the invention comprises a first component, a second component and silicone compound, wherein the first component includes at least one resin, the second component includes more than one selected from more than one monomer or oligomer, after coating the composition, the resin of the first component is separated due to separation, and minute sagging is formed on the surface.

The invention discloses PVC artificial leather and a preparation method thereof as well as a car seat containing the PVC artificial leather. The PVC artificial leather comprises a base fabric layer, aPVC adhesive layer, a PVC foaming layer, a PVC dense layer and a surface layer which are arranged in order from bottom to top; the PVC adhesive layer is prepared from the following raw materials in parts by weight: 100 parts of polyvinyl chloride, 55-90 parts of a plasticizer, 1-5 parts of a calcium-zinc stabilizer and 1-3 parts of an AC foaming agent. The PVC artificial leather provided by the invention not only meets the technical standards of ordinary PVC leather, but also has the advantages of high wear resistance, environmental protection, and relatively high residual strength after punching, and meets the increasingly stringent requirements of the industry environmental protection regulations.

The invention provides a self-lubricating hydrophilic coating which comprises, by weight, 30-50 parts of self-lubricating mixed dispersion liquid, 60-85 parts of acrylic resin, 20-90 parts of water, 1-2 parts of antifoaming agents, 4-8 parts of dispersing agents, 0.5-1.2 parts of wetting agents, 0.5-1.8 parts of PH modifiers, 0.5-0.8 part of rheological agents and 0.5-2.5 parts of surfactants, wherein the self-lubricating mixed dispersion liquid comprises, by weight, 20-50 parts of hydroxyl acrylamide, 30-45 parts of allyl glycidyl ether, 25-50 parts of acrylic acid, 40-80 parts of graphene, 80-120 parts of water, 20-50 parts of propylene glycol monomethyl ether and 50-80 parts of ethylene glycol monobutyl ether. Compared with related technology, the self-lubricating hydrophilic coating has the advantages that heat conduction efficiency, hydrophilia and self-lubricating performance are all high.

The invention discloses a preparation process of a silicification-free rubber plug. The preparation method comprises the steps of compounding rubber, flaking rubber, molding, volcanizing and molding,cutting, washing and drying, and packaging, and further comprises the steps of sequentially coating a dimethylsiloxane prepolymer solution and a polyvinylidene fluoride resin dispersion on the surfaceof washed and dried rubber plug, and drying and curing coating layers, wherein the dimethylsiloxane prepolymer solution is mainly prepared from the following components in parts by weight: 1-5.5 parts of dimethylsiloxane prepolymer, 0.2-0.5 part of silane crosslinking agent, 100 parts of organic solvent A, and the polyvinylidene fluoride resin dispersion is mainly prepared from polyvinylidene fluoride resin emulsion containing 5-15% of solid and silicon rubber catalyst. The cured rubber plug has a compound coating layer, low surface friction coefficient, good anti-ultraviolet performance, chemical resistance and anti-aging performance, and the silicification process in preparation of the rubber plug is prevented.

The present invention relates to high viscosity material extruding apparatus and process. The apparatus includes one expandable container, one outer cylinder and one cylinder cover. The container includes one straight barrel, one outlet and one piston set inside the straight barrel, and has its bottom connected airtightly to the bottom plate of the outer cylinder to avoid extrusion of compressed gas to the straight barrel. Under the action of both compressed air and the piston, the high viscosity material and the compressed gas push the side wall of the container outwards for expanding to increase the gap between the piston and the inner wall of the container for the high viscosity material to be filled in, so as to form a lubricant interface, decrease the friction between the piston and the inner wall of the container and raise the extruding speed and quality. Filling the gap with the high viscosity material can avoid compressed gas to enter the straight barrel and ensure the extrusion safety.