183results about How to "Small permanent deformation" patented technology

The invention discloses a thermoplastic polyurethane elastomer foam material, which is prepared from the following raw materials by weight: 80-100 parts of a thermoplastic polyurethane elastomer, 10-40 parts of a filler, 4-7 parts of a foaming agent, 0.6-1.5 parts of a cross-linking agent, 1.0-1.5 parts of a cross-linking assistant, 0.1-1.0 part of a mildew proof antibacterial agent and 1.2-2.0 parts of a lubricant. Adopting the above technical scheme, the invention has the beneficial effects of improving the foam expansion of the thermoplastic polyurethane foam material, expanding the scope of usage of the polyurethane foam material, and realizing compression deformation of a finished product produced from the thermoplastic polyurethane foam at no more than 35%, which is unmatched by an EVA foam material with equivalent foam expansion and similar elasticity. In addition, the foam material improves the performance of existing traditional foam materials, and solves the defects that polyester-type thermoplastic polyurethane elastomer has short service life, easily goes moldy on the product surface and generates mechanical performance loss in the field and damp and hot environment.

The invention discloses an ethylene propylene diene rubber composition and a preparation method. The preparation method comprises the following steps of: firstly, performing after plastication on ethylene propylene diene rubber; then, adding zinc oxide, stearic acid, anti-aging agent, carbon black, plasticizers, accelerant, vulcanizer and the like in sequence; evenly mixing and then extruding a sheet; and preparing the sheet into the ethylene propylene diene rubber/carbon black nanometer composite material by adopting the after vulcanization process. Through adding various plasticizers and adopting special process treatment, the tensile strength of the ethylene propylene diene rubber composition disclosed by the invention is at least 15.2MPa, the elongation at break is at least 400 percent, and the compression set is lower than 30 percent under the condition of 125 DEG C*70h. The composite material can be used as a sealing article of rubber, especially a rubber sealing washer applied to a groove-type pipeline joint part of an automatic water spray fire extinguishing system, and thereby, a long-term sealing effect is ensured.

The invention discloses an external rubber sleeve material of a cable used for wind power generation, comprising the following components by weight parts: 100.00 parts of chlorosulfonated polyethylene rubber, 15.00-20.00 parts of vulcanizing agent epoxy resin, 5.00-10.00 parts of magnesium oxide acid acceptor, 1.00-1.50 parts of vulcanization aid, 0.20-1.50 parts of vulcanization accelerator, 10.00-15.00 parts of fire-retardant plasticizer, 5.00-10.00 parts of cold resistant plasticizer, 30.00-40.00 parts of reinforcing agent, 40.00-50.00 parts of filling agent, 0.50-2.00 parts of anti-ageing agent, 0.50-2.00 parts of process operation agent, and 10.00-15.00 parts of flame retardant. The external rubber sleeve material of the cable used for wind power generation has the greatest advantages of extremely high physical and mechanical performance, excellent oil resistance and climate resistance, extremely softness and flame retarding, and the like.

Method of preparing thermoplastic elastomer compound material and product thereof, applying post forming technics. The post forming technics is: first prepare the mold core by the method of injection molding or compression molding; then put the mold core into the mould and produce product with mold core by the compression molding method, taking the mold core out of the product by mechanical crushing, getting the product of hollow thermoplastic elastomer compound material. The post forming method includes following steps: 1) preparing the mold core by the injection molding of the compression molding method; 2) putting the mold core into the mould and producing product with the mold core by the injection molding method; 3) taking the mold core out of the product by mechanical crushing to get the hollow product. 4) the crushed mold core can be reclaimed for recreating use. The thermoplastic elastomer product prepared by the invention provided moulding preparation method is in formula (in mass parts proportioning): thermoplastic elastomer 100parts; thermoplastic plastics 1-50 parts; anti-oxidant 0.5-10 parts; ultraviolet absorbent 0.5-10 parts; lubricants 0.1-5.0 parts.

The present invention, diatomite rubber reinforcing agent, relates to non-metal mineral product. The present invention features that diatomite is prepared into the diatomite rubber reinforcing agent to replace white carbon black. The rubber reinforcing agent with high quality and low cost is prepared with diatomite and through material selection, eliminating impurity, drying in kiln, crushing, wind selection and other technological processes.

The invention discloses an intensified POE (Polyolefin Elastomer) photovoltaic packaging adhesive film which is prepared from the following raw materials in parts by weight: 80-100 parts of POE, 5-30 parts of intensified resin, 1-10 parts of a compatibilizer, 0.01-1 part of a coupling agent, 0.01-5 parts of a cross-linking agent, 0.01-1 part of antioxidant and 0.01-1 part of an ultraviolet absorbent. The adhesive film is high in tensile strength, high in aging resistance and resistant to yellowing, and the service life of a component can be prolonged.

The invention relates to a process method for a sheath of a power transmission and transformation wire, in particular to a method for preparing an anti-freezing flame-retardant sheath. The method is characterized in that the anti-freezing flame-retardant sheath is prepared from the following raw materials in percentage by weight: 50 portions of base material, 1 portion of vulcanizing agent, 40 portions of strengthened plasticizer, 2 portions of antiager, 2 portions of damp-proof and moisture-proof separant and 5 portions of flame retardant. The anti-freezing flame-retardant sheath is preparedfrom novel high molecular materials, can protect power transmission and transformation wires, and can achieve the anti-freezing and flame-retardant effect.

The invention discloses a process for producing an ageing-resistant tire bladder sizing material. The process comprises the steps of (1) respectively weighing chlorinated butyl rubber and chloroprene rubber, adding the rubber into an internal mixer, mixing for 1-1.5 minutes, then adding butyl rubber, performing primary mixing, adding zinc oxide, microcrystalline wax and carbon black after 2-3 minutes, mixing for 3-5 minutes, adding castor oil, mixing, discharging the rubber after 3-4 minutes, and performing open mixing; (2) filtering the primary mixed rubber in a rubber filter; (3) adding the filtered mother rubber into the internal mixer, performing secondary mixing, adding a vulcanizing agent after mixing for 1-2 minutes, and discharging the rubber after 1-2 minutes; (4) extruding the secondary mixed rubber into a shape required by a die pressing vulcanizing machine or an injection vulcanizing machine by adopting a cold feed extruder. The process disclosed by the invention is improved from the formula and the production process, so that the production efficiency of bladders is greatly improved, the problems of surface cracking, seam allowance cracking and short service life of a finished product under severe use conditions are solved, the qualification rate of the bladder product is greatly improved, and the service life of the bladder product is greatly prolonged.

The invention discloses a high-wear resistance cable sheath material. The high-wear resistance cable sheath material comprises the following raw materials by weight: 90 to 100 parts of chloroprene rubber DCR114, 10 to 20 parts of EPDM 4770R, 15 to 20 parts of nanometer bauxite, 20 to 30 parts of a modification filling material, 8 to 10 parts of dioctyl sebacate, 3 to 4 parts of polypropylene adipate, 4 to 6 parts of acetyl triethyl citrate, 2 to 4 parts of zinc oxide, 6 to 8 parts of chlorinated paraffin, 2 to 3 parts of antimony trioxide, 2 to 4 parts of triphenyl phosphite, 1 to 2 parts of the anti-aging agent MB, 1 to 2 parts of the promoter CZ and 0.8 to 1 part of sulphur. The cable sheath material produced in the invention has excellent physical properties, a stable dimension, low shrinking percentage, high tensile strength, great tearing strength, strong resilience and good resistance to oil, heat, burning, sunlight, ozone, acid and alkali and chemical reagents; and the modification filling material provided by the invention has good dispersibility and low surface tension, enables tensile strength and stress at definite elongation of the cable sheath material to be further improved, reduces heat generation and compression set, delays the ageing speed of the cable sheath material, is capable of resisting acid and alkali and allows production cost to be reduced.

Disclosed is a method for setting a beverage can as a rotationally symmetric hollow member embodied wherein the beverage can that is monolithically composed of a body and a bottom. The aim of the invention is to transmit accurate coupling and precise controlling of the movement of the mandrel to the hollow member. Said aim is achieved by providing several clamping segments (2; 2a, 2b, 2c) that form an outward-facing cylindrical clamping area (16) so as to grip an internal surface of the hollow member. The clamping segments are guided in a radially movable manner. A force transmitting mechanism (10, 13) that is arranged inside the mandrel (1) is used for synchronously controlling the radial movement of the clamping segments (2) such that a hollow member which is clamped by the clamping device can be accurately moved in a controlled fashion.

The invention discloses an ageing resistant cable sheath material which comprises the following raw materials in parts by weight: 95-101 parts of neoprene A-30, 20-30 parts of nano calcium carbonate, 10-16 parts of modified filler, 6-9 parts of ethylene bis stearamide, 4-6 parts of epoxidized soybean oil, 15-20 parts of chlorinated polyethylene, 2-3 parts of diphenylamine, 10-15 parts of potassium feldspar powder, 2-4 parts of dibasic lead phosphate, 2-3 parts of antioxygen DSTP, 3-5 parts of barium stearate, 0.8-1 part of a cross-linking agent ATC, 0.8-1 part of an accelerant TMTD and 1-2 parts of dipentamethylenethiuram. The prepared ageing resistant cable sheath material has excellent performance, size stability, low shrinking percentage, has strong tensile strength, strong tearing strength, strong resilience force performance and also has good oil resistance, heat resistance, sunlight resistance, ozone resistance, acid/alkali resistance and chemical reagent resistance; and the modified filler has good dispersity and surface tension, can further improve the tensile strength and stress at definite elongation of the cable sheath material and reduce heating and compression set of the cable sheath material, is capable of slowing down the aging speed of the cable sheath material, resisting acid and alkali corrosion and reducing production cost.

The invention provides a multilayer condom containing a modified polyurethane raw material and a preparation method of the multilayer condom. The preparation method of the condom comprises the following steps: (1) preparation of an inner-layer adhesive film: reacting polyisocyanate with a chain extender to obtain a fluorine-containing and silicon-containing polyurethane emulsion, and then forminga film to prepare the inner-layer adhesive film; (2) preparation of an intermediate layer adhesive film: blending polyisoprene rubber and a modified polyurethane emulsion to prepare the intermediate layer adhesive film; (3) preparation of an outer adhesive film: preparing rosin modified resin latex from maleated rosin through emulsion polymerization, and then blending the rosin modified resin latex with modified polyurethane emulsion and polyisoprene rubber emulsion to form a film; and (4) hemming, demolding and forming to obtain a finished product. The multilayer condom has the advantages ofno special smell, no anaphylactic reaction, high tensile strength, high elongation at break, good toughness, high resilience, good bacteriostasis effect on a plurality of common bacteria, efficient barrier performance on small molecules, good processing and production, and good application prospect.

The invention relates to modified building asphalt and also relates to a production method of the modified building asphalt. The modified building asphalt consists of basis asphalt, depressurized residual oil, thermoplastic elastomer SBS, dispersing agent, padding material, anti-stripping agent and anti-aging agent. The production method is characterized in that the depressurized residual oil, the dispersing agent, the padding material, the anti-striping agent and the anti-aging agent are made into SBS mother material together with the thermoplastic elastomer SBS after being mixed, and then the SBS mother material and the molten basic asphalt are heated inside a reactor to generate the required modified building asphalt. The modified building asphalt which is prepared with the raw materials and the method has the advantages of difficult flowing at high temperature, difficult fracture at low temperature, good stability, low cost, good economic benefit and the like.

The column type helical spring is made from Inconal X-750 (GH4145) alloy wire. The procedures for manufacturing the spring are as following: wrapping the semi-finished product of long coil of spring:cutting the long coil to single springs; washing the springs; carrying out the solid solution heat treatment; cutting end and adjusting the pitch, and carrying out the aging heat treatment. With the tests of rigidity and permangnet deformation in high temperature being completed, the finished springs are obtained. The device for testing rigidity of the spring includes the worktable, the electric stove and dial gauge etc. Testing indicates the performances of the spring: when the working temperature at 550 degree.C, the service life > or =25000 hr. The spring is easy to be assembled in the vapor lock.

The invention relates to a vessel high-carrying-capacity low-surface-temperature-rise shielding cable and a manufacturing method thereof. A high-thermal-resistance-coefficient inflaming retarding fire-resistant insulating layer evenly wraps the periphery of a twisted copper conductor in a squeezing mode, a filament glass fiber woven reinforcement layer wraps the periphery of the high-thermal-resistance-coefficient inflaming retarding fire-resistant insulating layer to form shielding cable insulating cable cores, the shielding cable insulating cable cores are twisted to form a shielding cable core, and gaps among the shielding cable insulating cable cores are filled with high-thermal-resistance-coefficient inflaming retarding fire-resistant filling cores so that the cable core can be rounded off. A high-thermal-resistance-coefficient inflaming retarding fire-resistant longitudinal wrapping belt wraps the periphery of the shielding cable core, a shielding layer wraps the periphery of the high-thermal-resistance-coefficient inflaming retarding fire-resistant longitudinal wrapping belt, and a high-thermal-resistance-coefficient chemical crosslinking polyolefin outer sheath wraps the periphery of the shielding layer in a squeezing mode. According to the shielding cable, the temperature of the outer wall of the cable can be reduced, and the carrying capacity can be improved under the condition that the cross sections of conductors are the same.

A soft polyvinyl chloride plastics for the tube of creeping pump is prepared from PVC resin, dioctyl phthalate (DOP), dioctyl adipate (DOA), diisononyl phthalate (DINP), epoxy soybean (or flaxseed) oil, stearate, organic phosphite and silicon oil. Its advantages are high elasticity, flexibility and stability.

The invention discloses a PU foaming shoe material capable of releasing negative ions and a preparation method thereof. The PU foaming shoe material is prepared from the following raw materials in parts by weight: 70-80 parts of polyester polyurethane, 12-16 parts of ethylene-vinyl acetate copolymer, 5-7 parts of styrene-ethylene-butadiene-styrene block copolymer, 4-6 parts of a negative ion additive, 1.2-1.7 parts of 4-methylbenzenesulfonyl hydrazine, 0.45-0.55 parts of triethylene diamine, 0.08-0.12 parts of triallyl isocyanurate, 2-3 parts of talcum powder, 2-4 parts of titanium dioxide, 1-2 parts of zinc oxide, 2-4 parts of stearic acid and 1.5-2.7 parts of zinc stearate, wherein the negative ion additive is a mixture of opal powder and medical stone powder, and the mass ratio of opalpowder to medical stone powder is 1: (0.6-0.8). The PU foaming shoe material capable of releasing negative ions is small in density and light in weight; the indentation hardness is high, the tensile strength is high, and the mechanical property is good; the rebound rate is high, the compression set rate is low, the elasticity is good, and permanent deformation is not likely to happen in the usingprocess; and the overall performance is excellent.

The invention relates to a ship and warship protection cable high in current carrying capacity and low in surface temperature rise and a manufacture method thereof. A flame-retardant fire-resistant insulating layer high in thermal resistivity evenly wraps a stranded copper conductor in an extruding mode. A filament glass fiber woven reinforcing layer wraps the flame-retardant fire-resistant insulating layer high in thermal resistivity so as to form an electric cable insulating wire core. A plurality of electric cable insulating wire cores are mutually stranded to form an electric cable core. Flame-retardant fire-resistant padding high in thermal resistivity is filled into clearance between the electric cable insulating wire cores so as to enable the cable core to be round and neat. A flame-retardant fire-resistant longitudinal wrapping band high in thermal resistivity wraps the electric cable core. A chemical cross-linked polyolefin inner protection sleeve high in thermal resistivity wraps the flame-retardant fire-resistant longitudinal wrapping band high in thermal resistivity in an extruding mode. An armoured braid layer wraps the inner protection sleeve. A chemical cross-linked polyolefin outer protection sleeve high in thermal resistivity wraps the armoured braid layer. The high protection cable can reduce the temperature of the outer wall of cables, and can be improved in current-carrying capacity on the condition that section areas of conductors are the same.

The invention discloses a graphene capacitive screen and a manufacturing method thereof. The capacitive screen comprises a silica gel basal layer, a first graphene circuit layer, and a first OCA layer which are arranged in sequence, and further comprises an FPC which is connected with the first graphene circuit layer through a first conductive double faced adhesive layer. According to the invention, the silica gel is selected and used as the substrate of the graphene, and adopted as an ultrathin structure to form a thin film of which the transparency is greater than 80%; the thin film is taken as a base material; the graphene material is transferred on the base material; a microcircuit is manufactured through a laser etching technique; the FPC is bound by utilizing conductive adhesive to form the capacitive touch screen provided with super soft characteristic.

The invention discloses a manufacturing method of a high temperature cable with super flexibility. The method comprises the following steps: (1), an insulating layer with polytetrafluoroethylene material is extruded and formed on a conductor, and line conductors are formed; (2), the line conductors are centralized and intertwisted, and a cable core is formed; (3), a mica tape is used to wrap the cable core, and a mica belting layer is formed; (4), copper mesh is braided at the periphery of the mica belting layer, and a copper mesh braid ply is formed; (5), fluororubber is used to extrude and form a fluororubber layer outside the copper mesh braid ply, and an embryo covering is formed; and (6), by using an electron accelerator, the embryo covering is processed to an irradiation crosslinking fluororubber covering. The cable manufactured through the method is provided with the copper mesh braid ply, the mica belting layer and the irradiation crosslinking fluororubber covering, so that the cable has the advantages of good tensile strength, small resilience and permanent deformation, ozone resistance, ultraviolet radiation resistance, oil resistance, various chemical corrosion resistance, and good high temperature resistance and flexibility.

The invention discloses a highly oil-resistant chloroprene rubber sealing gasket comprising the following raw materials in parts by weight: 35-145 parts of chloroprene rubber CR1211, 20-25 parts of epichlorohydrin rubber, 10-20 parts of SG-2 type PVC (Polyvinyl Chloride) resin, 2-5 parts of tri(2-ethylhexyl)acetocitrate, 3-5 parts of dioctyl epoxy tetrahydrophthalate, 3-5 parts of dibutyl maleate, 1-2 parts of sodium alcohol ether sulphate, 30-40 parts of nano argil, 30-35 parts of carbon black N220, 30-35 parts of nano calcium carbonate powder and the like. The chloroprene rubber sealing gasket has excellent oil resistance and solvent resistance, is capable of satisfying the sealing requirement on an engine sump, and is easy to peel after being solidified, and cleanable and repairable without affecting dismounting and repairing.

The invention discloses an ultralow-temperature woven/wound outer rubber mixed material for hydraulic rubber hoses, which is prepared from polyvinyl chloride, butyronitrile 26, neoprene 322, chlorinated polyethylene, sulfur, zinc oxide, stearic acid, magnesium oxide, an accelerator DM, microcrystalline wax, coumarone, high-wear-resistance carbon black, semi-reinforcing carbon black, white carbon black, argil, an anti-aging agent, dioctyl decanedioate, dibutoxyethyl adipate, an adhesive AS-88 and an anti-aging agent 4010NA. The outer rubber for hydraulic rubber tubes can greatly enhance the ultralow-temperature freezing resistance and aging resistance of the hydraulic rubber tube, increase the number of times of pulses in the product use process, lower the permanent deformation in the use process, avoid generating the phenomena of pinholes, liquid leakage and cracking in the use process and prolong the service life of the hydraulic rubber tube in an ultralow temperature environment; the low-temperature freezing resistance can reach -45 DEG C; and thus, the outer rubber is suitable for extremely cold regions.