51results about How to "Good rebound rate" patented technology

The invention relates to a method for preparing polymer polyol with high solid content and low viscosity. The method adopts an intermittent method or a continuous method, and uses a basic polyether polyol as a continuous phase to perform in situ polymerization on a vinyl monomer, polyether polyol, a dispersing agent, and a chain transfer agent under the action of a free radical initiator to produce the polymer polyol with high solid content and low viscosity; or the method uses a certain amount of the polymer polyol with target solid content as a substrate material, mixes the raw materials such as the basic polyether polyol, the free radical initiator, the vinyl monomer, the dispersing agent, and the chain transfer agent evenly according to certain mixture ratio, and adds the mixture to the substrate material continuously to be polymerized so as to obtain the polymer polyol with high solid content and low viscosity. The polymer polyol produced by the method has the advantages of low viscosity, stable dispersion of solid particles, small average particle size of the solid particles, and even particle size. The polymer polyol improves the physical mechanical properties of products applying the polymer polyol, and has wide application range.

The invention provides a foaming nitrile rubber metal composite plate and a preparation method thereof, and relates to a sealing material. The foaming nitrile rubber metal composite plate comprises a metal base plate, wherein a foaming rubber layer is arranged at the surface of the metal base plate; the foaming rubber layer is prepared from the following raw materials in parts by mass: 100 parts of nitrile rubber, 1 to 10 parts of zinc oxide, 2 to 10 parts of accelerant, 0.5 to 5 parts of sulfur, 20 to 40 parts of carbon black, 1 to 5 parts of foaming agent, and 1 to 10 parts of additive. The foaming nitrile rubber metal composite plate has the advantages that the compression rate is 32 to 47%, the resilience rate is more than 80%, the creepage relaxation rate is less than 4%, the sealing property ml/hr is equal to or less than 0.02, and the oil sealing and non-leakage properties are realized; for resistant fuel B at room temperature after 5h, the weight increase is less than 2%, and the thickness increase is less than 4%; for resistant ASTM No.3 fuel at the temperature of 150 DEG C after 5h, the weight increase is less than 4%, and the thickness increase is less than 3%; the excellent compression rate, resilience rate, anti-creepage property, temperature and oil-resistant property and the like are realized.

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 provides a fluororubber metal composite plate and a preparation method thereof, and relates to a sealing material. The fluororubber metal composite plate comprises a metal base plate, wherein fluororubber coating layers are arranged at both sides of the metal base plate; each fluororubber coating is prepared from the following raw materials in parts by mass: 100 parts of fluororubber, 1 to 10 parts of magnesium oxide, 2 to 10 parts of calcium hydroxide, 2 to 10 parts of vulcanizing agent, 0.5 to 5 parts of accelerant, 20 to 40 parts of carbon black, 1 to 5 parts of modified bentonite, and 1 to 10 parts of additive. The fluororubber metal composite plate has the advantages that the compression rate is 21 to 32%, the resilience rate is more than 65%, the creepage relaxation rate is less than 5%, the sealing property ml/hr is equal to or less than 0.02, and the oil sealing and non-leakage properties are realized; the oil-resistant, cold-resistant and heat-resistant properties are good, the excellent resilience rate, anti-creepage property, temperature and oil-resistant property and the like are realized, and the comprehensive effect is obvious.

The invention discloses a graphene regenerated EVA (ethylene-vinyl acetate) forming sole colloidal particle and a preparation method thereof. The colloidal particle is prepared from, by weight, 22-28parts of ethylene-vinyl acetate copolymers, 45-50 parts of ethylene-vinyl acetate copolymer scrap grinding powder, 13-17 parts of oxidic polyethylene, 4-7 parts of graphene, 1-2 parts of carboxylatedgraphene, 2-4 parts of antioxidants, 1.5-3 parts of light stabilizers and 3-5 parts of zinc stearate. According to the graphene regenerated EVA forming sole colloidal particle, raw materials are carefully selected, a formula is reasonable, the graphene regenerated EVA forming sole colloidal particle serves as an EVA forming sole material, the colloidal particle has the advantages of high tensile strength, tearing strength and rebound rate, good bending resistance and rebound resilience, low size shrinkage rate and the like, the performances of the forming sole colloidal particle is close to even superior to those of marketing EVA sole materials, the EVA is recycled, the utilization rate of the EVA is increased, costs of raw materials are reduced, and the colloidal particle is more environmentally friendly.

The invention relates to an antifreeze liquid resisting water pump gasket and a preparation method of the antifreeze liquid resisting water pump gasket. The antifreeze liquid resisting water pump gasket is prepared from a main material and an auxiliary material in parts by weight and is prepared from the following components in parts by weight: 100 parts of the main material, 3 to 15 parts of mica powder, 20 to 30 parts of kaolin, 10 to 20 parts of talcum powder and 5 to 10 parts of a coloring agent; the main material is prepared from an antifreeze liquid resisting hydroxyl silicone oil substance, butadiene styrene rubber and fibers at the mass ratio of (3 to 5) to 40 to (55 to 57); the antifreeze liquid resisting hydroxyl silicone oil substance is prepared from the following components in parts by weight: 30 to 40 parts of hydroxyl silicone oil, 2.5 to 3 parts of a vulcanizing agent, 2 to 3 parts of a vulcanizing accelerant and 1 to 3 parts of an anti-ageing agent. By researching antifreeze liquid, antifreeze liquid resisting materials are pertinently selected; all the raw materials have mutual effect through a special process, so that a prepared sealing gasket has good resilience rate, tensile strength and compression ratio, and also has an excellent antifreeze liquid resisting performance; the weight gain of the sealing gasket is less than 20 percent and the thickening rate of the sealing gasket is less than 10 percent within 22h at the temperature of 100 DEG C.

The invention relates to the technical field of safe collision prevention of motor vehicles, in particular to a protection block of a motor vehicle and a manufacturing process thereof. The protection block is provided with an external rubber block and a bottom rubber block, wherein the elastic modulus of the bottom rubber block is more than that of the external rubber block; the two rubber blocks are superposed; the external rubber block mainly comprises the following raw materials: butadiene rubbers, natural rubbers, zinc oxide, stearic acid, vaseline, pine tar oil, sulfur and the like; and the bottom rubber block comprises the following raw material: polyurethaneWHT-1570IO. The manufacturing process comprises the steps of external rubber block processing, bottom rubber block processing and integral forming. The protection block and the manufacturing process have the following beneficial effects: the external rubber block and the bottom rubber block are respectively manufactured from two materials with different hardness; and the protection block can absorb the impact energy and buffer and resist strong impact and can inhibit resonance surge through interaction of the two rubber blocks, thus having good comprehensive collision defence effect.

The invention discloses a hollow foam roller. The hollow foam roller comprises an outer wrapping layer and an inside lining layer. The outer wrapping layer is a hollow cylinder. The inside of the outer wrapping layer is provided with a groove, in which the inside lining layer is arranged. Massage protrusions are arranged on the surface of the outer wrapping layer in a staggered mode. The shape of the inside lining layer is a hollow cylinder with two ends opened. The wall thickness of the inside lining layer is the same as the depth of the groove. The hollow foam roller has following beneficial effects: the hollow foam roller is low in cost, few in procedures, short in manufacture period, and reasonable in machining method; without utilization of glue, the purpose of saving energy and protecting environment is fulfilled; and the produced foam roller has advantages of non-splicing surface material, uniform hardness, high strength of a pattern surface, no crack, bright and colorful external appearance of a product, high rate of resilience, durability and no deformation.

The invention discloses a foam roller. The foam roller comprises an outer cladding and a lining column, wherein the outer cladding is a hollow cylinder; a groove is formed at the inner side of the outer cladding; the lining column is arranged in the groove; the surface of the outer cladding is provided with at least one group of buffer regions and massage regions; the surfaces of the buffer regions are in the shapes of circular arcs; spacing slots are formed among buffer regions at intervals; the massage regions are provided with massage convex points which are alternatively distributed; and the lining column is in the shape of a cylinder which is sealed at two ends. The foam roller is low in cost, less in working procedures, short in manufacturing period, scientific in processing method, and energy-saving and environmentally-friendly; the produced foam roller surface material is free of splicing, uniform in thickness, and high in pattern surface-skin strength; a product is bright in appearance, bright in color, durable in use, and is not deformed due to the fact that the EVA lining column is adopted.

The invention relates to the technical field of clothing production, and particularly discloses a sole material, a preparation method thereof and a shoe product, the sole material comprises a component A and a component B, the component A comprises the following raw materials: polyether polyol, polytetrahydrofuran ether glycol, an amine catalyst, a foaming agent, silicone oil and water; part of the component A and part of the component B are mixed to obtain an isocyanate prepolymer, and then the isocyanate prepolymer is mixed with the remaining component A to prepare the sole material. The rebound rate of the shoe sole material can be obviously improved, the weight of the shoe sole material is effectively reduced, and the problem that the weight of an existing shoe sole material cannot bereduced while the rebound rate is guaranteed is solved. The preparation method provided by the embodiment of the invention is simple, the rebound rate of the PU material can be effectively improved, the weight of the material can be reduced, and the prepared sole has lighter weight and higher rebound rate.

The invention discloses a sneaker sole with a good anti-skid effect and a preparation method thereof. The sneaker sole with the good anti-skid effect is prepared from the following raw materials in parts by weight: 35 to 45 parts of natural rubber, 18 to 26 parts of butadiene rubber, 25 to 35 parts of a polyurethane elastomer, 6 to 9 parts of glass fiber, 1 to 1.5 parts of nano zinc oxide, 3 to 5 parts of a heat stabilizer, 1.3 to 1.7 parts of a cross-linking agent and 1.8 to 2.5 parts of a foaming agent. According to the sports shoe sole with the good anti-skid effect, the raw materials are selected, the content of the raw materials is optimized, the advantages of the raw materials are brought into full play, and the raw materials supplement and promote each other, so that the prepared sports shoe sole with the good anti-skid effect (dry-type anti-skid and wet-type anti-skid) is high in anti-skid coefficient and good in anti-skid effect. The sports shoe sole is high in resilience rate, still high in resilience rate after being pressed, good in resilience performance, high in impact strength and tensile strength, good in comprehensive mechanical property, good in shock absorption performance, low in density (the density tested is 0.21-0.22 g/cm < 3 >) and good in portability.

The invention relates to a playground track material. The playground track material is prepared from octadecyl imidazoline, alkyl sodium sulfonate, methyl vinyl silicone rubber powder, acrylate, molybdenum trioxide, tribasic lead sulfate, butadiene rubber powder, bisphenol-A diglycidyl ether, metallocene polyethylene, isoprene rubber powder, dioctyl sebacate, fluoroether rubber powder, dioctyl terephthalate, an ethylene-vinyl acetate copolymer, furan resin, graphite powder, MBS resin powder, hexamethylenetetramine, barium sulfate, wollastonite powder, 2-mercaptobenzimidazole, benzothiazole and ABS resin powder. The preparation process method of the track material is simple. The product has high resilience, tensile strength and elongation at break and also has high corrosion resistance and antibacterial performance.