1393 results about "Tear resistance" patented technology

The invention discloses a high-performance ozone-resistant air spring and a preparation method thereof. An inner-layer rubber material and an outer-layer rubber material of the air spring are mainly prepared from the following components: chloroprene rubber, natural rubber, butadiene rubber, an anti-aging agent AW-66, an anti-aging agent 4010NA, an anti-aging agent 4020, microcrystalline wax, N660 carbon black, naphthenic oil, zinc oxide, CZ and insoluble sulfur. The preparation method comprises the steps of first-stage mixing, rubber discharging, standing, second-stage mixing, rubber discharging, standing, rubber sheet calendering, blastocyst forming, wrapping the blastocyst on the surface of a capsule, and performing high-pressure nitrogen vulcanization to form the air spring. The chloroprene rubber, the natural rubber and the butadiene rubber are blended and modified, so that the rubber has the following characteristics that the ozone resistance and the weather aging resistance are remarkably improved; the properties such as tensile strength, stress at definite elongation and tear resistance are improved; the production process properties such as extrusion and calendaring properties are improved, the deflection resistance of the rubber material is improved, and the service life of the product is prolonged.

The invention discloses a composite rubber material with wear resistance and high tear strength and a preparation method of the composite rubber material, and belongs to the technical field of rubber material processing. The technical problem that the enhancement effect of the filler on the wear resistance, tear resistance and mechanical strength of a rubber matrix needs to be further improved exists in the prior art. The composite material comprises the following components in parts by weight: 100-110 parts of internal mixed rubber, 1-2 parts of a vulcanization accelerator and 2-3 parts of a vulcanizing agent, modified polybutadiene is reinforced by aramid pulp, modified carbon black and modified graphene to prepare composite polybutadiene, and then styrene butadiene rubber is reinforced and modified by the prepared composite polybutadiene and silicone rubber to prepare the composite material. By improving the degree of crosslinking between material molecules and optimizing material composition, the wear resistance and tear resistance of the composite rubber material are effectively improved, and the mechanical property of the composite rubber material is also improved.

The invention relates to the technical field of high-barrier composite packaging films, and discloses a high-barrier composite packaging film with an antibacterial function, which sequentially comprises a base layer, a nano composite barrier layer, an antibacterial functional layer and an outer protective layer from bottom to top, and the layers are tightly attached through a coated starch-based adhesive. According to the high-barrier composite packaging film with the antibacterial function, the cellulose nanowhiskers have the characteristics of high strength and high modulus and are mixed with the bio-based polylactic acid, so that the tensile strength and tear resistance of the bio-based polylactic acid can be remarkably improved, and the structural stability of the packaging film in the using process is guaranteed; nano titanium dioxide and nano cellulose aerogel are arranged in the nano composite barrier layer, so that the barrier property of the packaging film on oxygen and ultraviolet rays can be enhanced, and the packaging film also has a certain antibacterial effect; in addition, the nanocellulose aerogel has a loose porous structure, so that gas molecules can be effectively prevented from passing through, and the barrier property is further improved.

The utility model relates to the field of plastic film detection, and discloses a plastic film tear resistance detection device which comprises a working cabinet, the top end in the working cabinet is fixedly connected with a fixing plate, the left side and the right side of the bottom of the fixing plate are fixedly connected with first screw rods, the bottoms of the two first screw rods are fixedly connected with second connecting rods, and the second connecting rods are fixedly connected with the working cabinet. The bottoms of the two second connecting rods are fixedly connected with second screws, and the bottoms of the two second screws are fixedly connected with first bevel gears. According to the utility model, by simultaneously driving the two second motors, the first clamping plate and the second clamping plate clamp the film, the contact area between the film and the first clamping plate and the contact area between the film and the second clamping plate are increased, the film is prevented from falling off, the pointing mark points to the zero scale of the scale mark, and the film is subjected to a vertical tearing test through the driving assembly; and when the driving assembly stops driving, the beacon points to the maximum tensile force which can be borne by the thin film.

The invention belongs to the technical field of environment-friendly materials, and mainly relates to a high-strength express bag which comprises a polylactic acid material, a poly (butylene succinate) material, a fiber material and an additive, the mass percent of the polylactic acid material is X, and the unit is%; the mass percentage of the poly (butylene succinate) material is Y, and the unit is%; wherein X + Y = 70; considering that an existing degradable express bag does not have relatively high tensile strength, by adjusting the ratio of the polylactic acid material to the poly (butylene succinate) material, the performance of the express bag in the aspects of tensile strength, tear resistance, thickness, degradation time and the like is optimized, and the optimal effect is achieved; in addition, the precise proportion of natural fibers and specific additives is also fused, so that the comprehensive performance of the express bag is further improved; furthermore, the invention further discloses a preparation method of the high-strength express bag, and the performance of the express bag is further improved.

The invention discloses a forming device and a forming method of a high-temperature-resistant low-temperature-resistant high-toughness cable. According to the invention, based on a double-substrate synergistic system of hydrogenated nitrile rubber and polyether type thermoplastic polyurethane, and in combination with a dynamic vulcanization crosslinking technology, the cable keeps excellent flexibility and tear resistance in a wide temperature range of-60 DEG C to 125 DEG C. A three-dimensional reinforced network of nano silicon dioxide and carbon nanotubes is directionally dispersed in a matrix, and mechanical support of aramid short fibers is matched, so that the cable is endowed with bending fatigue resistance, the durability of the drag chain cable in a high-frequency torsion scene of an oil platform exceeds 30 million cycles is realized, and the service life of the drag chain cable is prolonged. The problem of breakage caused by low-temperature embrittlement and high-temperature softening of a traditional cable is fundamentally solved, the synergistic effect of the perfluoropolyether surface modifier and the composite anti-aging system enables the cable to form a stable protective layer in strong acid, strong alkali, salt mist and oil stain environments, and chemical corrosion and ultraviolet irradiation are effectively resisted.

The invention belongs to the technical field of new materials of conveying belts, and discloses a graphene modified whole-core flame-retardant conveying belt for a coal mine and a preparation method of the graphene modified whole-core flame-retardant conveying belt. Comprising mixed rubber and a polyester fabric located in mixed liquid, and the mixed rubber is prepared from, by weight, 100-120 parts of chloroprene rubber, 20-30 parts of hydrogenated nitrile rubber, 5-10 parts of graphene composite particles, 1-3 parts of magnesium hydroxide and 1-3 parts of dioctyl terephthalate. The conveyor belt prepared by the invention not only has relatively high mechanical strength and tear resistance, but also has good flame retardant property.

The invention relates to the field of rubber materials, and particularly discloses a lightweight wear-resistant rubber sole and a preparation method thereof. The lightweight wear-resistant rubber sole comprises the following raw materials in parts by weight: 100 parts of main rubber, 30-40 parts of a reinforcing agent, 25-30 parts of a foaming agent, 20-25 parts of a foaming aid, 4.8-5.2 parts of a cross-linking agent, 1-3 parts of an accelerant, 2-3 parts of stearic acid, 4-5 parts of zinc stearate, 9-12 parts of a dispersing agent and 1-2.5 parts of an anti-aging agent, the reinforcing agent comprises coupling modified hollow mesoporous silica spheres; the main rubber is prepared from cis-1, 4-polybutadiene rubber, polystyrene-butadiene rubber and isoprene according to the mass ratio of 1 to (2.3 to 2.5) to (2 to 2.3). The rubber sole is small in density, high in rebound rate, lighter and more comfortable to wear, high in wear resistance and tear resistance, small in compression rebound rate and long in service life.

The invention discloses a solar photovoltaic cable sheath material and a tear-resistant photovoltaic cable, and belongs to the field of photovoltaic cable manufacturing. The sheath material comprises the following components in parts by weight: 70-120 parts of ethylene propylene rubber, 10-13 parts of crosslinked polyethylene, 3-7 parts of zinc oxide, 1-4 parts of stearic acid, 1-2 parts of paraffin, 2-5 parts of an anti-aging agent RD, 8-12 parts of zinc borate, 150-200 parts of a reinforcing agent, 10-12 parts of high abrasion furnace black, 9-13 parts of tricresyl phosphate, 9-13 parts of red phosphorus, 0.5-1 part of an accelerant TMTD, 3-5 parts of DCP and 1-2 parts of HVA-2. The reinforcing agent composed of sodium silicate, ferric chloride and aluminum hydroxide is added into the sheath material, so that when the sheath material is damaged, sodium silicate and ferric chloride react under the influence of air moisture to generate colloidal silicic acid carrying ferric hydroxide and aluminum hydroxide, and the damaged part is filled with the colloidal silicic acid; and meanwhile, the aluminum hydroxide can promote the colloidal silicic acid to be dried, so that the damaged part is repaired, and the situation that the tear resistance of the cable is remarkably worsened due to damage is avoided.

The invention relates to the technical field of polymer foam materials, in particular to a preparation method of gradient cross-linked pearl wool microcellular foamation.According to a gradient cross-linked network constructed through a two-stage cross-linking technology, collaborative optimization of the performance of a surface layer and the performance of a core part of the material is achieved, a compact three-dimensional net-shaped structure is formed in a high-cross-linking-degree area of the surface layer, and the core part of the material is expanded; the surface hardness, wear resistance and tear resistance of the material are remarkably enhanced, external impact and friction damage are effectively resisted, the low-crosslinking-degree area of the core part retains the moderate movement capacity of a polymer chain, the material is endowed with excellent energy absorption characteristic and flexibility, and the material has good mechanical properties when bearing complex stress. Stress dispersion can be achieved through surface layer-core part synergistic deformation, fracture failure caused by local stress concentration is avoided, meanwhile, a gradient cross-linked network provides a controllable melt strength gradient field for supercritical fluid foaming, and therefore accurate control over the size and distribution of foam holes is achieved in the single-time foaming process.

The invention relates to the technical field of manufacturing of gum dipping labor protection appliances, in particular to waterborne polyurethane for labor protection gloves and a preparation method of the waterborne polyurethane. According to the waterborne polyurethane for the labor protection gloves, the solid content ranges from 45% to 50%, the viscosity is basically maintained between 56 mPa.s and 58 mPa.s, the average particle size of polyurethane in emulsion ranges from 300 nm to 500 nm, the potential of the emulsion ranges from-35 mV to-50 mV, the waterborne polyurethane has good dispersion stability and high solid content, and after being cured into an adhesive film, the waterborne polyurethane has high strength and good flexibility at the same time; the waterborne polyurethane working gloves obtained by dipping the waterborne polyurethane have excellent friction resistance, tear resistance and penetration resistance.

The utility model relates to a PET (Polyethylene Terephthalate) glazing film. The composite material comprises a polyester material base material layer, the top of the polyester material base material layer is fixedly connected with a resin glazing layer; the bottom of the polyester material base material layer is fixedly connected with an adhesive layer; the bottom of the adhesive layer is fixedly connected with a metal tear-resistant layer; a first release paper layer is attached to the bottom of the metal tear-resistant layer; the polyester material base material layer, the resin glazing layer, the adhesive layer and the metal tear-resistant layer are consistent with the first release paper layer in shape and size; by means of the structural design that the metal anti-tearing layer is arranged between the polyester material base material layer and the adhesive layer, the function of effectively improving the anti-tearing performance of the PET glazing film is achieved, and the problem that if the PET glazing film is frequently affected by adverse conditions such as friction, impact or high temperature, the tearing performance of the PET glazing film is easily improved is effectively solved. Therefore, the problem that the PET glazing film is easy to crack during use is solved.

A seat cushion includes a mesh member embedded into a foam member. The mesh member comprises a set of filaments of polymeric material which are looped and bonded to each other. The mesh increases rigidity, cut resistance, tear resistance, and abrasion resistance of the foam member, eliminating the need for scrim and border wire in some applications.

The invention discloses a high-toughness biaxially oriented nylon film and a production method thereof. Comprising the following raw materials in parts by weight: 40-50 parts of copolymerized nylon resin, 10-20 parts of nylon 12, 15-25 parts of thermoplastic polyamide elastomer, 3-6 parts of nanofiller, 1-3 parts of coupling agent, 10-20 parts of reinforced fiber, 5-8 parts of additive, 3-7 parts of ethylene-methyl acrylate-glycidyl methacrylate terpolymer and 6-10 parts of modified cellulose nanocrystal. The invention relates to a flame-retardant polyamide resin, which is prepared from the following components in parts by weight: 2-4 parts of amino-terminated hyperbranched polyamide and 1-3 parts of 3, 3 '-diamino-4, 4'-difluorodiphenyl sulfone. The film is high in tensile strength, good in tear resistance and excellent in barrier property and low-temperature impact resistance.

The invention discloses a protective fabric with tear resistance and a preparation process thereof. According to the invention, through the three-layer structural design of the inner comfortable layer, the middle protective layer and the outer protective layer, performance optimization of the fabric in multiple aspects is realized. The inner comfortable layer is made of the polyester fibers and the spandex fibers, and the moisture-conducting and sweat-discharging auxiliaries are added, so that the softness and moisture-permeable and sweat-discharging capabilities of the contact surface of the fabric and the skin are ensured, and the comfort of a wearer is improved. The middle protective layer is combined with aramid fibers, ultra-high molecular weight polyethylene fibers, carbon fibers and a thermoplastic polyurethane film, and high-strength, impact-resistant and puncture-resistant protective performance is formed. The outer protective layer utilizes the excellent characteristics of aramid fibers and polyimide fibers, and a fireproof agent and a wear-resistant agent are added, so that the wear-resistant and fireproof capabilities of the fabric are enhanced. Due to the multi-layer composite structure, the fabric is light and convenient, has high-strength tear resistance, and meets the high-standard requirement for personal protection equipment in a complex environment.

The invention relates to an antibacterial anti-mite fabric and a preparation method thereof. The fabric comprises an inner layer, a middle layer and an outer layer which are sequentially connected, the middle layer comprises a first supporting layer and a second supporting layer which are integrally formed on the opposite faces of the inner layer and the outer layer respectively, the first supporting layer and the second supporting layer each comprise a concave section and a hot-pressing protruding section which are alternately connected, and a containing cavity is formed between the concave sections of the first supporting layer and the second supporting layer. A first connecting gasket and a second connecting gasket are correspondingly arranged on the inner side face of the containing cavity up and down. The middle layer is arranged between the inner layer and the outer layer, and the durability of the whole antibacterial and anti-mite coating of the fabric is improved through the middle layer, so that the antibacterial and anti-mite effect of the fabric can be kept more lasting, the attenuation speed of the antibacterial and anti-mite effect is low, and meanwhile, the antibacterial and anti-mite effect of the fabric is improved. The tear resistance and the down-proof performance of the fabric are remarkably improved, so that the fabric can be conveniently used as a down jacket fabric.

The invention discloses a rubber composite material for a high-performance tire and a preparation method of the rubber composite material. The rubber composite material is prepared from the following raw materials in parts by weight: 30-50 parts of natural rubber, 10-15 parts of butadiene rubber, 25-40 parts of butadiene styrene rubber, 10-20 parts of carbon black, 10-30 parts of composite filler, 2-8 parts of aromatic hydrocarbon oil, 2-5 parts of an anti-aging agent, 1-5 parts of a vulcanizing agent, 1-5 parts of a vulcanization accelerator and 1-3 parts of stearic acid. The prepared rubber composite material has excellent mechanical properties, enhanced tear resistance and overall strength, the outstanding wear resistance enables a tire to adapt to various road conditions, the heat dissipation performance is optimized, thermo-oxidative aging is reduced, the service life is prolonged, the hardness and rigidity are improved, the wear resistance is enhanced, the rolling resistance is reduced, and the fuel efficiency is improved; the improved dynamic balance performance and anti-flowability improve the driving safety, are suitable for wear-resistant tires used for a long time and vehicles with special road conditions, and provide high-quality choices for severe environments.

The invention discloses a preparation method of a rubber waterstop material with a low compression set rate, which comprises the following steps: firstly, carrying out blending reaction on hydroxyl silicone oil and boric acid to obtain liquid polyborosiloxane; the preparation method comprises the following steps: adding liquid polyborosiloxane and natural rubber into an internal mixer according to a ratio, and carrying out internal mixing to obtain a mixture; adding zinc oxide, an anti-aging agent, stearic acid and an anti-tearing agent into the obtained mixture, and continuously mixing; continuously adding kaolin talcum powder, calcium carbonate, calcium oxide, white carbon black, N550, N330 and KH550, and internally mixing again to obtain a preform; adding a vulcanization accelerator and a vulcanizing agent into the preform, and continuously mixing to obtain a rubber material to be vulcanized; and vulcanizing and forming the rubber material to be vulcanized to prepare the rubber water-stop belt material with the low compression set rate. According to the invention, the compression set rate of the rubber material can be reduced while the tensile strength, elongation, tear resistance and other properties of the rubber are not sacrificed, so that the product performance is enhanced.

The present application relates to the technical field of composite materials, and in particular to a high-performance polyether TPU film and a preparation method thereof. A high-performance polyether TPU film comprises the following raw materials by mass: 30-40 parts of dimer acid polyester polyol, 1015 parts of modified polyester polyol, 4060 parts of polyisocyanate, 1-3 parts of nitrile rubber, 10-15 parts of modified glass fiber, 58 parts of chain extender, 13 parts of catalyst, 58 parts of hexafluorobutyl methacrylate, 1-3 parts of coupling agent, 12 parts of antioxidant, and 0.1-0.5 parts of antibacterial agent. The polyether TPU film of the present application has good aging resistance, air permeability, antibacterial property, water resistance, waterproofness, tear resistance, and excellent mechanical properties, making it suitable for wide application in water supplies, water entertainment and other fields.

The invention discloses a preparation process of cutting-resistant and puncture-proof protective gloves, and belongs to the technical field of preparation methods of protective gloves. According to the technology, the four steps of pretreatment, composite coating material dipping, dipping of different butadiene-acrylonitrile rubber latexes and partitioned vulcanization treatment are adopted, balance of protection performance and wearing comfort is achieved through combination of technology optimization and material innovation, the cutting resistance of the prepared protective gloves reaches the grade E of the GB24541-2022 standard, the puncture resistance and the tear resistance both reach the grade 4, and the service life of the protective gloves is prolonged. And the composite material is good in air permeability and excellent in durability, is particularly suitable for high-risk operation scenes such as military, security and metal processing, and has remarkable technical progress and industrialization value.

The invention discloses a tear-resistant fluororubber material and a preparation method thereof, and belongs to the technical field of fluororubber production, and the tear-resistant fluororubber material comprises the following raw materials: tetrafluoroethylene-propylene rubber, modified carbon nanotubes, a vulcanizing agent, an accelerant, a plasticizer and an anti-aging agent. The modified carbon nanotube is prepared by the following steps: adding a multi-walled carbon nanotube into 2-phosphonobutane-1, 2, 4-tricarboxylic acid, vacuumizing, heating and stirring, cooling, discharging, washing and drying to obtain a phosphonic acid modified carbon nanotube, adding the phosphonic acid modified carbon nanotube and thioacetamide into pure water, ultrasonically stirring, adding a metal nitride, and stirring to obtain the phosphonic acid modified carbon nanotube. And heating to 80-90 DEG C, stirring at a constant temperature for 8-10 hours, cooling to room temperature after the stirring is finished, and carrying out suction filtration, washing and drying to obtain the modified carbon nanotube. Through detection, the fluororubber prepared by the invention has excellent tear resistance, mechanical property and flame retardant property.

The invention discloses a silica gel material with high tensile strength and a preparation method thereof, and the preparation method comprises the following steps: mixing fumed silica and a silane coupling agent, carrying out surface modification treatment to obtain a modified filler, and premixing methyl vinyl silicone rubber and hydroxyl silicone oil in mixing equipment to obtain a matrix mixture; the modified filler and the nano aluminum oxide are added into the matrix mixture in batches and are dispersed and blended through mixing equipment, so that uniform dispersion of the nano filler is realized, stress concentration is effectively reduced, and the tear resistance is improved; then the silica gel rubber compound is transferred into open type mixing equipment, a peroxide vulcanizing agent is added, thin-passing dispersion is carried out, a to-be-vulcanized rubber material is sequentially subjected to first-stage mold pressing vulcanization and second-stage post-vulcanization treatment, the high-tensile-strength silica gel material with a cross-linked network structure is formed, the cross-linking density is guaranteed, meanwhile, internal defects are eliminated, and the high-tensile-strength silica gel material with the cross-linked network structure is obtained. The tensile strength of the material is obviously improved; the uniformity and the aging resistance of the material are improved, and the silica gel material with high strength and high elasticity is obtained.

The invention provides a dealcoholized silicone sealant with high tear strength and fatigue resistance and a preparation method thereof. The silicone sealant comprises the following components in parts by weight: 100 parts of alpha, omega-dihydroxy polysiloxane, 20-40 parts of polyborosiloxane, 5-15 parts of simethicone, 70-140 parts of nano active calcium carbonate, 3-7 parts of a cross-linking agent, 1-3 parts of a compound coupling agent, 2-5 parts of a titanate vulcanizing agent A and 2-4 parts of a titanate vulcanizing agent B. According to the method, polyborosiloxane and alpha, omega-dihydroxy polysiloxane are adopted as basic polymers, a titanate vulcanizing agent is compounded, and a filler, a cross-linking agent, a coupling agent and the like are matched to obtain the dealcoholized silicone sealant which has relatively high tear strength and excellent fatigue resistance; and obvious negative effects on the surface drying time, the tensile strength, the elongation at break and other mechanical properties and the adhesive property of the silicone sealant are avoided. The invention also overcomes the defects of poor mechanical fatigue resistance and tear resistance of the existing silicone sealant.

The invention discloses a weather-resistant insulating overhead cable, which relates to the technical field of cables, comprises a cable mechanism, and is characterized in that the cable mechanism comprises conductors, an insulating layer, an inner sheath layer and a steel tape armor; according to the invention, the inner sheath layer and the steel tape armoring are arranged at the outer side of the conductor in a layered manner, the inner sheath layer adopts chloroprene rubber as a main raw material, the chloroprene rubber has excellent weather resistance, ozone resistance, chemical corrosion resistance and flame retardance, and carbon black can enhance the wear resistance and tear resistance of the inner sheath layer and improve the weather resistance of the inner sheath layer at the same time; the anti-aging agent can effectively delay the aging speed of the inner sheath layer, the plasticizer improves the flexibility and processability of the chloroprene rubber, the inner sheath layer wraps the shielding layer and further protects the inner insulating layer and the shielding layer, the good weather resistance of the inner sheath layer can resist erosion of the external environment to the internal structure, and the inner sheath layer and the outer insulating layer act synergistically, so that the service life of the cable is prolonged. And the overall weather resistance of the cable is enhanced.

The invention discloses a high-wear-resistance double-sheath automobile high-voltage cable, and particularly relates to the technical field of automobile high-voltage cables, and the high-wear-resistance double-sheath automobile high-voltage cable specifically comprises the following steps: S1, preparing a conductor; s2, coating an inner insulating layer; s3, setting a shielding layer; s4, constructing an inner sheath and a middle layer; s5, adding a fireproof layer; s6, cross-linking the outer sheath; and S7, performance testing. The cable is excellent in performance, the double-layer sheath structure and the cross-linked polyolefin outer layer are adopted to enhance wear resistance and tear resistance, friction and external force in a complex environment in a vehicle can be effectively dealt with, chemical corrosion resistance and water resistance are improved, the cable can resist damage of chemical substances and water, and temperature adaptability is good. The advantages of silica gel and cross-linked polyolefin are combined, the heat resistance is improved, thermal aging is retarded, the flame retardant property is good, the fire risk is reduced, the insulating property is improved, the electromagnetic shielding effect is improved, signal transmission is guaranteed, the stability is high, and the cable is highly suitable for new energy automobiles through pressure resistance and wear resistance tests.

The utility model discloses an overhead insulated wire, which comprises a wire core, a wrapping tape, a shielding ring and a protective layer, and through the arrangement of the protective layer and the inner and outer double-layer arrangement of a protective outer skin and a protective inner skin, the rubber has the characteristics of double wear resistance, stretching resistance, tearing resistance, ultraviolet resistance and cold resistance. The high strength and rigidity are increased through the polyurethane layer and the carbon fiber layer, the heat dissipation layer plays a good heat dissipation protection role in the interior, the heat dissipation layer is arranged, the heat dissipation upper film and the heat dissipation bottom film have the heat conductivity and super flexibility, and polyester fibers and mica tapes are arranged in a light and thin mode, so that the heat dissipation effect is good, and the heat dissipation effect is good. Therefore, heat in the wire can easily pass through the heat dissipation upper film, the polyester fiber, the mica tape and the heat dissipation bottom film to be dissipated, and the polyester fiber and the mica tape have good air permeability and toughness for the wire in the wire.

The present invention discloses a wear-resistant and tear-resistant polyamide elastomer composition and a preparation method and application thereof, and belongs to the technical field of modified materials. The wear-resistant and tear-resistant polyamide elastomer composition is prepared by weight from 87.1 to 95.9 parts of polyamide elastomer, 3 to 10 parts of wear-resistant agent, 0.2 to 1 part of cross-linking agent, 0.4 to 1 part of antioxidant, 0.1 to 0.6 parts of nucleating agent, 0.2 to 0.6 parts of dispersant, 0 to 2 parts of masterbatch, and 0 to 0.01 parts of fluorescent brightener. The present invention adopts polyamide elastomer as a substrate, and generates a cross-linking structure through a trifunctional cross-linking agent and an amide bond and / or an end group (amino, carboxyl, hydroxyl) in a polyamide elastomer molecular chain to improve the tear strength of the composition, and adds a polymer wear-resistant agent (PTFE and / or POM powder) to improve the wear resistance and resilience of the composition, so that the badminton racket line nails prepared by the composition of the present invention have playability and durability.

The invention provides a single-component modified silane adhesive as well as a preparation method and application thereof. The adhesive is prepared by mixing the following components: silane modified polyether resin, silane modified polymer resin, a plasticizer, a composite light stabilizer, a filler, a rheological additive, a water removal agent, a coupling agent and a catalyst, the silane modified polyether resin is silane-terminated resin prepared by a hydrosilylation method; the silane-modified polymer resin is a silane-terminated polymer resin containing a urethane bond. The adhesive is excellent in comprehensive performance, the tensile strength of a body is larger than 3 MPa, the elongation at break is larger than 450%, the adhesive is high in adhesion universality to metal base materials, PET films, ceramics, glass, wood floors, PVC, PC, ABS, wood-plastic composite materials and paint faces, the base materials do not need to be specially treated, the damage form is cohesive failure, and the adhesive has good adhesion strength, tear resistance and excellent temperature resistance and is suitable for being applied to the field of wood products. After aging at 120 DEG C for one week, the tensile strength of the body is greater than 3 MPa, the elongation at break is greater than 430%, and the surface layer can be coated after curing.

The invention relates to the technical field of power cables, and particularly discloses a cable with a cable insulation layer and a preparation method thereof, and the cable comprises a conductor and an insulation layer wrapping the conductor. The preparation method comprises the following steps: S1, raw material pretreatment: preheating and softening the high-strength silicone rubber in a temperature interval of 120-150 DEG C; s2, a mixing procedure: adding an aluminum hydroxide flame retardant and ethylene-vinyl acetate copolymer resin into the pretreated high-strength silicone rubber; and S3, extruding and coating: applying the mixed composite material to the periphery of a conductor through an extruder, and controlling the extrusion temperature to be 140-170 DEG C. The cable can be used for power transmission in a high-temperature environment, and has the advantages that the flexibility and tear resistance are maintained in the high-temperature environment, and meanwhile, the long-term thermal stability is improved; in addition, the preparation method disclosed by the invention has the advantages of improving the compatibility of the filler and the matrix and improving the mechanical property of the cable.

The invention relates to a lightweight foaming sole material, which comprises the following raw materials by mass: 20-30% of a PA / EBA modified blend; 10% to 20% of a TPEE / EBA modified blend; 10%-30% of an ethylene-butyl acrylate copolymer (EBA); 8%-15% of an ethylene-octylene copolymer POE; 8%-15% of brominated butyl rubber BIIR; 2%-3% of talcum powder; 5%-10% of a coupling agent; 0.5%-1% of a lubricant; 1%-2% of a foaming aid; 0.3%-1% of a cross-linking agent; and 3%-7% of a foaming agent. The foaming sole material provided by the invention has the advantages of high elasticity, tear resistance and wrinkle resistance; the preparation method is simple and low in production cost, and has a wide application prospect in the field of foamed sole materials.