57results about How to "Small coefficient of static friction" patented technology

The invention discloses a fabric type surface texture friction pre-filling type self-lubricating knuckle bearing. The fabric type surface texture friction pre-filling type self-lubricating knuckle bearing comprises an inner ring and an outer ring; a surface texture is machined on the outer sphere face of the bearing inner ring (3) and subjected to self-lubricating material friction pre-filling technology treatment to form a self-lubricating material friction pre-filling surface texture structure; and a layer of fabric self-lubricating material liner is pasted on the surface of the inner sphere face of the bearing outer ring (1). Abrasion to the fabric liner by the edge of the surface texture in the initial stage of friction is avoided to a certain degree, the surface texture is easily full of self-lubricating materials in a friction mode, and the process is simple. The self-lubricating materials pre-filling the textured surface optimize the friction interface material configuration, so that a friction surface transfer membrane is easy to generate, the texture edge cutting effect is weakened to a certain degree, the friction interface has lower static friction coefficient and lower dynamic friction coefficient, and accordingly the service life of the self-lubricating knuckle bearing is greatly prolonged.

The invention provides a vinyl chloride series adhesive sheet and an adhesive tape, which are little influenced by the temperature of a service environment and are prepared by using vinyl chloride series film as a substrate. With the exudation of a non-lead series stabilizing agent and a plasticizer, adhesive performance of the vinyl chloride series adhesive sheet and the adhesive tape is reduced little. The vinyl chloride series adhesive sheet and the adhesive tape are characterized in that one surface of the substrate has an adhesive layer; one surface of the substrate, opposite to the surface with the adhesive layer, has a back processing layer which is a mixed layer of polysiloxane and a (methyl) acrylic polymer; the mass ratio of polysiloxane to the (methyl) acrylic polymer is 1:5-5:1; the substrate contains PVC resin, a copolymer of metacrylic acid ester, styrene and butadiene, a stabilizing agent and a plasticizer; the adhesive layer is a (methyl)acrylic polymer; and in the vinyl chloride series adhesive sheet and the adhesive tape, static friction coefficient of the back processing layer is 0.05-1.0.

The invention provides tissue paper having equal or better smoothness and moist feeling than conventional moist tissue paper, and which is less sticky and does not tear as easily when used. To also provide a tissue paper product that does not tear easily when being pulled out. [Solution] With respect to a two-ply chemical solution-applied tissue paper, the chemical solution is applied such that the amount of the chemical solution contained in both surfaces is 1.5 to 5.5 g/m2, and the basis weight per layer of the sheets that constitute the two-ply paper is 10 to 25 g/m2 and the thickness of the two-ply paper is 100 to 140 [mu]m. The web bulk is 0.28 to 0.40 mm per pair and the length of the slit section of the opening in the storage box for pulling out the tissue is 45 to 65% of the length of the web in the longitudinal direction.

Systems and processes for packing complementary articles of footwear into a container are disclosed. The processes can include utilizing a reusable packing sheet positioned underneath complementary articles of footwear to transfer the complementary articles of footwear into a container. The processes can also include removing the reusable packing sheet from underneath the complementary articles offootwear while the complementary articles of footwear remain positioned in the container. Additional processes can include aligning and sizing complementary articles of footwear for packing in a container.

The invention discloses polyamide-imide finish for a corona-resistant enameled wire. The polyamide-imide finish comprises, in terms of the total weight accounting for 100 parts, components as follows: 1-10 parts of a lubricating abrasion-resistant component, 1-10 parts of a solvent and the balance of base paint, wherein the lubricating abrasion-resistant component is a mixture of molybdenum disulfide, sepiolite powder, polytetrafluoroethylene, polyethylene wax and silicone oil in the ratio of (20-30):(20-30):(15-25):(15-25):(5-15) in terms of the total weight accounting for 100 parts; the solvent is a mixture of N-methylpyrrolidone and xylene in the weight ratio of (1-2):1; the base paint is polyamide-imide paint. The polyamide-imide finish can decrease the static friction coefficient of the corona-resistant enameled wire, is good in improvement effect on the corona resistance of the corona-resistant enameled wire and is applicable to driving motors of new-energy vehicles.

The invention relates to upright type five-shaft processing center Z-direction vertical guide rail unloading devices and a manufacturing method. An upright face at one side of an upright post used for loading is provided with a left/right guide rail, and the double-pendulum milling heads of an A shaft and a B shaft make up-and-down movement in the vertical direction of the front face of a Z-direction guide rail by a sliding plate. The invention is characterized in that the left/right guide rail at the front face is respectively provided with a set of A unloading devices, and the A unloading devices are respectively installed below the sliding plate and are combined with a left guide rail and a right guide rail of the upright post; in addition, two sets of B unloading devices are arranged and are respectively installed on a left upper press plate and a right upper press plate at the back face of the left/right guide rail; a rolling bearing bracket and a rolling bearing in the unloading devices are connected by a pin shaft and are locked by a holding screw; and part of load on the double-pendulum heads of the A shaft and the B shaft is borne by the rolling bearing supported on a guide rail face, and the magnitude of unloading force is regulated in such a way that a regulating nut drives the rolling bearing bracket to regulate the magnitude of butterfly spring force, thus part of the load is unloaded. By adopting a bearing increase unloading guide rail device, part of the load (gravity and cutting force) of the guide rail can be shared, the load supporting the guide rail is lightened, and the static friction coefficient of the guide rail is lowered, thus frictional force is reduced, the wear resistance of the guide rail and the smoothness of low-speed movement are enhanced, and creeping is reduced or prevented.

The invention discloses automatic gearbox oil. The automatic gearbox oil comprises the following components in parts by weight: 75-90 parts of base oil, 2-5 parts of a viscosity index improver, 2-4 parts of a detergent dispersant, 0.5-1.5 parts of an antioxidant, 0.1-0.2 part of a metal deactivator, 1-2 parts of an antiwear agent, 1-1.5 parts of dialkyldithiocarbamate, and 0.1-0.5 part of a defoamer. The automatic gearbox oil provided by the invention has excellent lubricating performance, oxidation stability, low-temperature fluidity, high wear resistance and detergent dispersibility, and nofrothing, and the service life is prolonged.

The invention discloses a non-stick coating layer, which is prepared from the following raw materials in parts by weight: 40 to 50 parts of epoxy acrylate, 25 to 32 parts of polyacrylic acid fluorine-containing ester, 25 to 32 parts of poly (vinylidene fluoride-trifluoroethylene), 10 to 15 parts of polytetrafluoroethylene powder, 2.5 to 4 parts of a suspension dispersing agent, 1 to 1.4 parts of aleveling agent and 1.5 to 2 parts of a curing agent. The non-stick coating layer has excellent lubricating performance and excellent non-stick performance, can completely meet the use requirements ofvarious processing molds (such as various plastic demolding, baking molds and papermaking and textile industries), contains no demolding agent (the production efficiency can be improved), and has excellent durability; in addition, no silicone oil is contained, and the product is prevented from being polluted; the adhesive force with a base material is large, the loading capacity is large, the impact resistance is good, the flexibility is good, the comprehensive performance is good, and the service life is long.

The invention belongs to the technical field of materials for infusion bottles or bags and discloses a self-lubrication composite material used for producing easy-folding outer covers of infusion bottles or bags and the application of the self-lubrication composite material in the medicine packing materials. By weight, the self-lubrication composite material comprises the following components: 55-94 parts of polypropylene, 1-20 parts of polyethylene, 1-20 parts of flexibilizers, 2-25 parts of lubrication resin and 0.1-4 parts of antioxidants. The lubrication resin is composed of at least one of ethylene, norbornene copolymer, 1,1,2,3,3,3-hexafluoropropylene-1-propylene and 1,1-polyvinylidene floride copolymer master batches. Polypropylene is adopted as the main material so that the self-lubrication composite material can ensure the welding intensity. The lubrication resin and the substrate have good compatibility so that the self-lubrication composite material has good temperature resistance, biological fitness, chemical inertness and high lubricity, enables the static friction coefficient to be as low as 0.381, the dynamic friction coefficient to be as low as 0.343, and the yellow color index after 25 kGy doses of 60 Co-gamma ray radiation to be smaller than and equal to 9.

The invention relates to a preparation method for a self-lubricating polyamide-imide enamelled wire insulated paint synthesized by grafting polymerization. The method comprises the steps of preparing an aliphatic acid or alcohol with a long chain alkyl into a solution with a concentration of 10% by using N-methyl pyrrolidone as a solvent; adding the solution to hexamethylene diisocyanate with a spraying method; stirring rapidly and heating to a temperature of 100-150 DEG C gradually to obtain an intermediate A; adding the intermediate A and diphenylmethane diisocyanate together into trimellitic anhydride with a molar ratio of free -NCO in the intermediate A to that in diphenylmethane diisocyanate being 1 : 1-1 : 5; controlling the molar ratio of -NCO to two functional groups in trimellitic anhydride being 1 : 1-1 : 1.05; stirring for 2.5 hours slowly at a kettle temperature of 70 DEG C; heating to a temperature of 120 DEG C; fast stirring for 3.5 hours; and adding dimethylbenzene to make the self-lubricating polyamide-imide enamelled wire insulated paint. The self-lubricating polyamide-imide enamelled wire insulated paint has long quality guarantee period, and does not appear layering. The static friction coefficient can be lower than 0.06. Risks that the enamelled wire is scratched during the processes of winding coils, embedding wires and shaping can be decreased.

The invention discloses a heat-resistant and low-migrating organic smooth opening agent which is obtained by mixing of, by weight, 25-50wt% of component A, 25-50wt% of component B and 25-50wt% of component C. The component B refers to pentaerythritol fatty acid ester, the component B refers to one or two selected from ethylene bis oleamide and stearyl erucic acid amide, and the component C refers to one or two selected from behenamide and polymethyl methacrylate; ethylene bis oleamide and stearyl erucic acid amide are in the mass ratio of 2:1-1:2 when used simultaneously; behenamide and polymethyl methacrylate are in the mass ratio of 2:1-1:2 when used simultaneously. A carrier-free opening-agent master batch obtained with the above formula has the advantages of smoothness, opening, lubricating, demolding and no folding out of the surface in plastics, and the opening agent is resistant to high temperature to 350DEG C, low in migration and uniform in dispersion and is used for preparing the heat-resistant and smooth plastic master batch.

The invention relates to a bottle having a bottle main body made from light metal and a neck provided with an external thread. The bottle (1) comprises a capsule-type closure cap (5) with a cap (6) closing an opening of the bottle (1) and a skirt (7) adjoining the cap (6) and provided with a thread (8) co-operating with the external thread (4) of the neck (3), the edge (9) of the neck (3) of the bottle (1) being formed by an overturned portion (10) of the neck (3). The overturned portion forms a bead extending circumferentially around an opening of the bottle main body (2). A free end of the over-turned portion (10) points in the direction of an external or internal face of the bottle (1). The overturned portion (10) is of a curved design in the region of an apex (11) of the edge (9) facing the cap (6), and the edge (9) of the bottle (1) has an essentially O-shaped cross-section.

The invention relates to a process for production of inner wall everlasting lubricating layer masterbatch for optical cable sewing pipe when producing it, the characteristic of which lies in: selecting silicon adjuvant, and adjuvant good for silicon adjuvant dispersing and antistatic agent, anti-oxidant; blending them with carrier resin, then blending homogeneously on a high-speed batch mixer; squeezing and granulating on the twin-screw extruder to get inner wall everlasting lubricating layer masterbatch for optical cable sewing pipe, which takes advantages of the synergic effect of all the adjuvant, in order that even in the low filling range of the adjuvant, the effect is quite good; such masterbatch and base resin lock-in extrusion moldability is sound, and stable processing parameter, good product quality. The coefficient of friction of rest of inner wall everlasting lubricating layer for optical cable sewing pipe produced by such masterbatch is less than 0.165.

The invention discloses an anticorrosive coating layer with good lubricating performance. The anticorrosive coating layer comprises the following raw materials in parts by weight: 75-85 parts of aqueous two-component polyurethane, 18 to 25 parts of 2-acrylamide and 1-vinyl-2-pyrrolidone, 12 to 16 parts of a water-soluble phenolic resin, 4 to 6 parts of nano metal particles, 6 to 8 parts of mixtureof nano graphite and molybdenum disulfide, 2 to 3 parts of nano silicon dioxide, 3 to 5 parts of a dispersing agent, 1 to 1.5 parts of a defoaming agent and 0.8 to 1.3 parts of a leveling agent; wherein the mass ratio of the nano-graphite to the molybdenum disulfide in the mixture of the nano-graphite and the molybdenum disulfide is 1: (0.2-0.4). The static friction coefficient of the anticorrosive coating layer with good lubricating property is as low as 0.14, the dynamic friction coefficient is as low as 0.10, and the anticorrosive coating layer has good lubricating property; in addition, the salt spray test can reach 10,000 hours or above, and the corrosion resistance is excellent; the wear resistance is excellent; in addition, the comprehensive performance is excellent.

Sealing arrangement, comprising a sealing ring (1) having at least one dynamically loaded sealing lip (2), and a machine element (3) to be sealed that has a surface (4) to be sealed, which surface iselectrically conductive and surrounded by the sealing lip (2) in a radially prestressingly sealing manner, the sealing ring (1) comprising a core (5) made of an electrically conductive material (6) and a casing (7) made of an electrically insulating material (8), the casing (7) having a material thickness (9, 10, 11), surrounding the core (5) at least in part and comprising the sealing lip (2), said sealing arrangement comprising a wear detector (12), which has an electric measurement device (13) for detecting the state of wear of the sealing ring (1), wherein, when viewed in section, the material thickness (9) of the sealing lip (2) is smaller in the radial direction (14) than the material thickness (10, 11) of the remainder of the casing (7).

The invention discloses a flexible anti-aging shielding twisted pair cable and a preparation method thereof. The cable is characterized in that four twisted-pair wire cores and a cross-shaped fillingcore material are twisted together to form a cable core, the exterior of the cable core is coated with a fluororesin wrapping tape layer, an aluminum-plastic composite tape wrapping layer, a copper wire shielding winding layer and a silane grafted crosslinked high-density polyethylene insulating layer, the pair-twisted wire core is formed by pair twisting of two insulating wire cores, each insulating wire core comprises an inner conductor and a silane grafted crosslinked low-density polyethylene insulating layer, a nickel copper damage prevention coating and a zinc oxide barrier layer are sequentially sprayed outside the inner conductor and the copper wire shielding winding layer, the cross-shaped filling core material comprises a cross-shaped resin matrix and an aluminum foil layer, an aluminum-plastic composite belt wrapping layer is of an aluminum-plastic composite belt gap wrapping structure, and the aluminum-plastic composite belt comprises an aluminum foil belt outer layer and aPET resin belt inner layer. The cable is advantaged in that the cable effectively suppresses signal interference caused by crosstalk between the pair-twisted wire cores, can effectively suppress a copper damage phenomenon of an insulating layer, and has better mechanical strength, flexibility and electrical characteristics.

The invention discloses a preparation process of machine washable spun silk. The preparation process of the machine washable spun silk comprises the following steps of 1, pre-treating of spun silk; 2, washing with water; 3, treating with a machine washable auxiliary agent; 4, washing with water; 5, oil feeding; 6, dewatering; and 7, drying. The step of treating with the machine washable auxiliary agent comprises the substeps that softened water with the bath ratio of 1: 20 is added into a water tank of a skein dyeing machine, and then 10% of the machine washable auxiliary agent is added. The preparation process is simple; and after the spun silk is treated with the process, a uniform and breathable coating layer can be formed on the surface of the spun silk, so that the static friction coefficient and the dynamic friction coefficient of the spun silk are greatly reduced, the anti-fuzzing and anti-pilling performance of the spun silk is effectively improved, the characteristics of the spun silk are brought into full play, machine washing is achieved, and development and application of the spun silk in the textile and garment aspect are further expanded.

The invention discloses a piece of weighing paper. The surface resistivity of at least one surface of the weighing paper is not greater than 1010 ohms, the quantity of the paper is 25-45 g/m<2>, and the static friction coefficient of the surface for weighing is not greater than 0.25. The surface resistivity can be further reduced by increasing antistatic components, and due to reduction of the surface resistivity, the possibility of powder flying can be effectively reduced when nano-powder is weighed. Meanwhile, substances like nano-powder can be transferred from the surfaces of the weighing paper smoothly by controlling the surface roughness and the static friction coefficient of the weighing paper.