866 results about "Tear resistance" patented technology

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 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 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.

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 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 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 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 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 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.

The invention provides a liquid silicone rubber composition, a coated fabric and a preparation method and application thereof. The composition adopts pure organic silicon resin to replace fumed silica powder, and comprises the following components in percentage by weight: 20-50% of polysiloxane containing alkenyl at the tail end, 20-50% of organic silicon resin, 2-10% of hydrogen-containing silicone oil, 1-6% of catalyst, 0.5-3% of adhesive, 0.1-2% of inhibitor and 2-4% of optional color paste or stabilizer. The component A and the component B are homogenized and mixed for 2 h under the condition that the temperature is lower than or equal to 50 DEG C, and coating liquid is prepared according to the weight ratio of 10: 1; and after blade coating of 25g / m < 2 >, rapid curing is carried out at 190 DEG C for 1-5 minutes, and the silicone rubber coated fabric which is compact, tear-resistant, weather-resistant, excellent in interface adhesion and soft in hand feeling is prepared. The product is suitable for the fields of synthetic leather, personal protection materials or special conveyor belts.

The invention discloses a cross-linking type biodegradable POF heat shrink film and a preparation method thereof, and belongs to the technical field of heat shrink films, and the cross-linking type biodegradable POF heat shrink film is characterized by comprising three layers of films which are sequentially attached, each of the first-layer film and the third-layer film comprises the following raw materials in percentage by weight: 89.5-94% of PP, 2-6% of degradable master batch, 0.5-3% of an anti-blocking agent and 1-4% of a slipping agent; the second-layer film is prepared from the following raw materials in percentage by weight: 30 to 35 percent of LLDPE-A, 9 to 14.5 percent of toughening agent, 0.5 to 1 percent of degradable master batch, 40 to 45 percent of LLDPE-B and 10 to 15 percent of metallocene LLDPE; the melt index of the LLDPE-A is 2.5 g / 10min, the melt index of the LLDPE-B is 2.1 g / 10min, the melt index of the metallocene LLDPE is 1.0 g / 10min, and through the synergistic effect between the LLDPE with different melt indexes and the flexibilizer, the low-temperature tear resistance of the heat shrink film is effectively improved.

The invention relates to the field of rubber materials, in particular to a wear-resistant light rubber material and a preparation method thereof.The rubber material is prepared from, by weight, 20-30 parts of natural rubber, 40-50 parts of butadiene styrene rubber, 10-20 parts of ethylene-vinyl acetate copolymer, 20-40 parts of white carbon black, 10-20 parts of carbon black, 5-15 parts of modified ceramic fiber and 3-5 parts of foaming agent. 1-3 parts of a silane coupling agent, 1-3 parts of a lubricant, 1.5-2.5 parts of a vulcanizing agent and 1-2 parts of an accelerant. Wherein the natural rubber provides high elasticity and tear resistance, the butadiene styrene rubber endows the material with excellent wear resistance and fatigue resistance, and the natural rubber and the butadiene styrene rubber are combined to form an elasticity-wear resistance complementary effect. The carbon black and the white carbon black are used as reinforcing agents, so that the hardness and the wear resistance of the material are improved; and the modified ceramic fibers form a rigid support network through directional distribution, so that external impact is resisted, and the strength, crack resistance and wear resistance are further enhanced.

To provide a laminate excellent in tearing property while reducing environmental load.SOLUTION: A laminate comprises a substrate film, a primer layer, an adhesive layer, and a sealant film in this order, and includes a printed surface of an electrostatic ink composition adhered to the adhesive layer. The adhesive layer contains a solvent-free adhesive composition including a polyol component and a polyisocyanate component, its cured product, or a mixture thereof, and the adhesive strength of the adhesive layer is 1.0 N / 15 mm width or more. The laminate has a group of scratches, each consisting of multiple scratches that include through-holes.SELECTED DRAWING: Figure 1

The invention discloses high-wear-resistance tread rubber for an off-the-road tire, and relates to the technical field of tires. According to the technical scheme, the rubber composition comprises the following components in parts by weight: 100 parts of a rubber component, 35-55 parts of carbon black, 4-6 parts of a wear-resistant agent DC-Z-B, 10-20 parts of white carbon black, 1-2 parts of a silane coupling agent, 1-2 parts of alkylphenol tackifying resin, 8-12 parts of a CR multifunctional composite reinforcing agent TDS, 3-5 parts of an anti-aging agent, 1-2 parts of microcrystalline wax, 3-5 parts of zinc oxide, 1-2 parts of stearic acid, 1.5-2 parts of sulfur and 1.2-2.4 parts of an accelerant. The wear-resistant agent DC-Z-B and CR multifunctional composite reinforcing agent TDS are adopted, through interface optimization, dynamic performance complementation and thermal stability synergy, the wear resistance and tear resistance of the tread rubber can be further improved, and the comprehensive performance improvement of '1 + 1gt, 2' is achieved.

The invention discloses a tear-resistant high-strength rubber cushion belt for a heavy truck and a preparation method of the tear-resistant high-strength rubber cushion belt, and relates to the technical field of rubber cushion belts. Hybrid short fiber modified natural rubber is used as a main raw material; phosphotungstic acid modifies the surface of a graphene nanosheet through a coordinate bond, cerium dioxide generated through hydrolysis is combined with heteropolyanions of phosphotungstic acid through a W-O-Ce bond, electrostatic adsorption is carried out on the surface layer of a protonated aramid short fiber, and a hybrid short fiber is prepared; mixing according to the ratio, extruding a rubber strip according to the weight and length requirements, vulcanizing, and uniformly adhering the cord fabric with the composite coating on the surface to the two sides of the R arc through a special-shaped die during extrusion. The proportioning components of the flap are particularly suitable for occasions requiring high rigidity and good shape retentivity, such as heavy trucks, and the flap has excellent tear resistance and high strength. The prepared cushion belt has the effects of tear resistance and high strength.

The invention provides a glass assembly and a vehicle, the glass assembly comprises a glass structure, an electric function layer and a connector module, the electric function layer is arranged on the glass structure, the connector module comprises a flexible circuit board and a rib, one end of the flexible circuit board is arranged on the glass structure and electrically connected with the electric function layer, and the other end of the flexible circuit board extends out of the glass structure and is used for being connected with a wire harness structure; wherein the flexible circuit board is provided with a corner part, and the ribs are arranged corresponding to the corner part. Ribs can be arranged at the positions corresponding to the corner parts, the strength of the flexible circuit board is improved through the ribs, the tear resistance is improved, and the connector module is prevented from being damaged due to tear in the transportation and operation process.

The invention relates to a braided structure optimization method of a glass fiber sleeve in the field of new material industry, which comprises the following steps: if improved structural design data does not reach a preset stress uniformity threshold, performing fine adjustment on fiber interaction parameters through an iterative optimization algorithm to obtain a new braided structure scheme, and determining the improvement effect of stress distribution; according to the new braided structure scheme, simulating mechanical performance under a high-strength requirement and a sudden external force impact scene, obtaining test data of tear resistance, and judging whether the test data meet a preset performance standard or not; according to the updated mechanical property simulation result, fatigue life prediction data of the material in a complex stress environment is obtained by combining a fatigue damage evaluation model with long-term service life, and whether the requirement for durability improvement is met or not is judged.

A two-sided touch fastener material includes a resin base having a front surface, an array of loop-engageable fastener elements extending from the front surface of the strip-form base and having stems of resin contiguous with resin of the front surface of the base, and a backing secured to the resin base on a side opposite the front surface, the backing extending across the resin base and including a web of non-woven fibers including fiber segments embedded in resin of the base, and a plurality of longitudinally continuous bundles of fibers extending through the web with fiber portions of the longitudinally continuous bundles exposed as loop elements engageable by the loop-engageable fastener elements, wherein the longitudinally continuous bundles of fibers extend along a length of the base, are spaced apart across a width of the base, are partially embedded in resin of the base such that a thickness of resin of the base at the fibers is less than between the longitudinally continuous bundles of fibers, and wherein the longitudinally continuous bundles of fibers correspond to areas of weakened tear resistance of the touch fastener material.

The invention discloses a soft and light cable for ocean engineering, and belongs to the technical field of ocean engineering, a sheath adopts a double-layer polyurethane structure, modified aramid fibers are embedded between inner and outer layers of polyurethane to serve as a reinforcing layer, and the modified aramid fibers are formed by generating oxygen-containing polar groups on the surfaces of the aramid fibers through surface modification. The modified aramid fiber and the polyurethane form chemical bonding in the processing process, and the sheath is made of thermoplastic polyether polyurethane elastomer; the interface bonding strength between the sheath material and the modified aramid fiber woven material is high, different use environments can be better adapted, the inner and outer sheath structures are not easy to move, and the inner material is better protected. The sheath is made of polyurethane, and the polyurethane has high tensile strength, wear resistance and tear resistance and can bear mechanical stress and impact in the marine environment.

A dismantlable pallet including a substantially planar, upper load bearing member with a reinforcing internal frame; a substantially planar, lower supporting base with a reinforcing internal frame configured to improve the structural rigidity and load bearing capacity of the base. The pallet further includes a plurality of spaced apart support members sandwiched between the load bearing member and the base defining apertures between the load bearing member and the base, rendering the pallet releasably engageable with conventional and compatible load transporting apparatuses; and at least one releasable fastener to secure the load bearing member to the base with their respective reinforcing internal frames and the support members sandwiched between the member and the base wherein the load bearing member and the base are made of a rubber compound selected from the group including hardness, tensile strength, tear resistance, abrasion resistance, temperature resistance, impact resistance, slip resistance and moisture resistance.

The invention discloses a weather-resistant insulated overhead cable, which relates to the technical field of cables and comprises a cable mechanism. The cable mechanism is characterized in that: the cable mechanism comprises a conductor, an insulating layer, an inner sheath layer and a steel belt armor; the invention arranges the inner sheath layer and the steel belt armor in layers on the outer side of the conductor; 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 retardancy; carbon black can enhance the wear resistance and tear resistance of the inner sheath layer and improve its weather resistance at the same time; an antioxidant can effectively delay the aging speed of the inner sheath layer; a plasticizer improves the flexibility and processing performance of the chloroprene rubber; the inner sheath layer is wrapped outside 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 the erosion of the internal structure by the external environment, and synergizes with the outer insulating layer to enhance the weather resistance of the entire cable.

The invention relates to digitally-driven cable preparation, in particular to a high-tear-resistance and high-resilience new energy charging silica gel cable and a preparation method thereof, and the high-tear-resistance and high-resilience new energy charging silica gel cable sequentially comprises a conductor layer, a first interface layer, a shielding layer, a second interface layer, an insulating layer and a sheath layer from inside to outside; forming process parameters of the first interface layer and the second interface layer are dynamically optimized by a corresponding digital twin model, and an optimization target is determined according to a resistivity target of the first interface layer, a peel strength target of the second interface layer and an overall rebound rate target of the cable. According to the invention, intelligent optimization is carried out by adopting extrusion parameters optimized by a digital twin model, so that the parameter control in the preparation process is more accurate, the production yield is improved, and the first interface layer and the second interface layer have a synergistic effect, so that the interface peel strength and rebound resilience are improved.

The invention provides a high-elasticity tear-resistant silicone rubber material and a preparation method thereof.The high-elasticity tear-resistant silicone rubber material is characterized by being prepared from, by mass, 100 parts of vinyl polysiloxane, 5-15 parts of phenylboronic acid end group modified polydimethylsiloxane and 1-5 parts of 2, 3-dihydroxypropyl disulfide, the adhesive comprises the following components in parts by mass: 10-30 parts of fumed silica, 1-5 parts of a cross-linking agent, 1-2 parts of a plasticizer and 0.001-0.005 part of a catalyst. By introducing the combination of phenylboronic acid end group modified polydimethylsiloxane and 2, 3-dihydroxypropyl disulfide, a dual dynamic covalent bond network with a stress triggering characteristic is constructed in a silicone rubber system, and when the material is subjected to external force, a disulfide bond is used as a sacrificial unit to preferentially break to dissipate energy and generate micro-voids, so that the stress triggering performance of the material is improved. And then stress-triggered boric acid ester bond dynamic recombination further disperses stress and stabilizes a micro-cavity structure, so that graded dissipation of energy is realized, crack propagation is reduced, and the elasticity and tear resistance of the material are improved.

The invention relates to the technical field of high polymer materials, in particular to ultra-high molecular weight polyethylene tarpaulin and a preparation method thereof.The preparation method comprises the following steps that S1, ultra-high molecular weight polyethylene resin is subjected to melt spinning, high-power hot stretching and twisting treatment; s2, weaving the fiber monofilaments into base cloth through a weaving process; s3, mixing the components according to a preset proportion to form a mixture A; s4, melting and plasticizing the mixture A, and curtain-coating the double surfaces of the base cloth with composite film layers through a curtain-coating die head; s5, a reinforced waterproof layer material is attached to the outer side of the composite film layer; and S6, finally, edge cutting and rolling treatment are conducted. The ultra-high molecular weight polyethylene fiber base material, the optimized composite film layer and the reinforced waterproof layer are adopted, and a multi-step precise process is combined, so that the tensile strength, the tear resistance, the weather resistance and the waterproof performance of the tarpaulin are remarkably improved, and the tarpaulin can adapt to various complex environments and high-strength use scenes.

The utility model discloses a polyester fabric anti-tearing force detection device, relates to the technical field of polyester fabric detection, and aims to solve the technical problem that a certain error exists in detection data due to the fact that the clamping and fixing effect of a current traditional clamp on polyester fabric is not stable enough, and the polyester fabric anti-tearing force detection device comprises a U-shaped frame of which the two ends of the top are detachably provided with clamping assemblies, a polyester fabric body is detachably clamped between the clamping assemblies, each clamping assembly comprises an installation base, a clamping mechanism A and a clamping mechanism B are symmetrically and movably arranged on one side of each installation base, a motor used for driving the clamping mechanism A and the clamping mechanism B to move oppositely is detachably installed on one face of each installation base, and each clamping mechanism A comprises a clamping part A; the clamping mechanism B comprises a clamping component B. The clamping component A comprises a U-shaped clamping plate A. The clamping component B comprises a U-shaped clamping plate B. The U-shaped clamping plate A and the U-shaped clamping plate B are arranged in a staggered mode. The clamping device has the advantage that the clamping stability of the polyester fabric body is improved.

The invention discloses cold-resistant and tear-resistant coating resin and a preparation method thereof, and relates to the technical field of coatings. The invention discloses cold-resistant and tear-resistant coating resin. The invention relates to a water-based paint, which is prepared from the following raw materials in parts by weight: 40 to 60 parts of modified epoxy resin, 15 to 25 parts of poly (hexanediol adipate), 5 to 10 parts of modified nano silicon dioxide, 8 to 15 parts of diphenylmethane diisocyanate, 3 to 8 parts of trimethylolpropane, 10 to 20 parts of methyl methacrylate, 8 to 15 parts of butyl acrylate, 0.5 to 2 parts of benzoyl peroxide and 0.2 to 0.8 part of dibutyltin dilaurate. The invention relates to an anti-aging coating which comprises the following components in parts by weight: 20-30 parts of a silane coupling agent, 1-3 parts of a silane coupling agent KH-550, 0.3-1 part of an anti-aging agent 264, 5-12 parts of dioctyl phthalate and 20-35 parts of a mixed organic solvent. The raw materials are scientifically proportioned, and the cold resistance and tear resistance of the coating are remarkably improved through the synergistic effect of the modified epoxy resin and the modified nano silicon dioxide; water is strictly controlled in the whole process, side reaction is avoided, and stable resin structure is guaranteed; the preparation steps are clear and definite, the repeatability is high, the solvent system adaptability is good, construction is convenient and fast, and the method is suitable for base material protection in various low-temperature scenes.