36results about How to "Improve gas retention performance" patented technology

The invention relates to a preparation method of novel tire airtight liner promoter and an application of the novel tire airtight liner promoter. The airtight liner promoter comprises, by weight, 20-50% of uniform resin, 10-20% of lubrication dispersant, 20-40% of inorganic air barrier material and 20-40% of tackifying resin. By the use of the airtight liner promoter, compatibility of rubbers of different polarities is improved, adhesive force of airtight liner size and tire size is enhanced, and therefore airtight performance of the tire and driving safety performance are prompted. As shown in application tests, the tire with the airtight liner promoter is prior to like products on sale in the aspects of service life, pressure maintaining performance and driving safety. The airtight liner promoter is imparted plastification, tackifying and vulcanizing active effects, high in compatibility with the rubber, effective in wetting various rubbers used simultaneously and reducing surface tension of the rubbers, high in dispersion speed and uniformity of carbon black, the inorganic air barrier material and the like in the rubbers and good in reinforcing effect.

A thermosol with polyamide or polyesteramide structure is prepared from dibasic acid and dibasic amine as primary raw material, adding modifier, chain-enlarging agent, catalyst, antioxidant, anti-ageing agent, optical stabilizer and terminating agent through polycondensating reaction. Its molecular wegiht is about in the range 3000-40000 dalton. Its advantages are wide temp. range for application (-30- +60 deg.C), high adhesion and thermal stability, and low cost.

The invention relates to a vitamin C smicrocapsule flour improver and a preparation method thereof. The wall material of the flour improver is a mixed type wall material containing starch, stearic acid monoglyceride and hardened oil, and the bag core substance is vitamin C. The stearic acid monoglyceride and the hardened oil are mixed and then melted, then the starch and the vitamin C are added in the molten mass and evenly stirred to obtain the finished product by freezing, granulating and crushing. The smicrocapsule flour improver has the advantages of good stability, proper release rate, security, no foreign flavor and high utilization ratio of the vitamin C. In the method for preparing the vitamin C smicrocapsule flour improver, the realized cladding rate is up to 90 percent, no solvent is required to be used, the environmental pollution phenomenon does not exist, the process is simple and feasible and the cost is low.

The invention discloses a section structure of a motorcycle tire. The motorcycle tire comprises a tire tread part, a tire bead part and a tire lip part, wherein the tire bead part consists of an upper circular arc line and a lower straight line; an included angle formed between the circular arc line and the straight line is an obtuse angle; saw-toothed patterns are arranged all around the straight line; the tire bead part and the tire lip part are chamfered. The tire bead part which consists of the circular arc line and the straight line is approximate to a broken line, so that the rigidity of the tire bead part is ensured, the tire and a rim can be well embedded, and the problem of separation of the tire lip part from the rim is solved; moreover, by additionally arranging the saw-toothed patterns on the straight line of the tire bead part, the whole weight of the tire can be reduced; by chamfering the tire bead part and the tire lip part, stress concentration between the tire bead part and the tire lip part can be prevented, and the strength of the tire bead part can be ensured; when the tire runs in an internal pressure reduction state, the tire can be fastened with the rim, the air preservation performance is improved, and a motorcycle can reach the nearest maintenance point.

The invention discloses a hot-runner mold provided with double layers of runners. The mold comprises a runner plate structure, wherein the runner plate structure comprises a transition plate and an air cylinder plate; a first surface-layer runner plate and a first core-layer runner plate are arranged between the transition plate and the air cylinder plate; a first surface-layer melt runner is arranged inside the first surface-layer runner plate; a first core-layer melt runner is arranged inside the first core-layer runner plate; a second surface-layer runner plate and a second core-layer runner plate are further arranged between the transition plate and the air cylinder plate; a second surface-layer melt runner is arranged inside the second surface-layer runner plate; and a second core-layer melt runner is arranged inside the second core-layer runner plate. The mold adopts the design of the double layers of runners, that is, the surface-layer melt runners comprise double layers of runners capable of realizing independent temperature control, and the core-layer melt runners also comprise double layers of runners capable of realizing independent temperature control, so that plastic in different molten states can be injected into a cavity in a layered manner simultaneously, and different materials can be injected on the same bottom preform in a layered manner.

The invention discloses a formula for reducing tire bead protection rubber heat generation performance and compression deformation. The formula comprises 100phr of natural rubber, 40 to 60phr of N326 carbon black, 2 to 5phr of zinc oxide, 1 to 3phr of stearic acid, 0 to 3phr of RD, 3 to 10phr of reinforcing resin, 3 to 5phr of sulphur, 0.5 to 1.0phr of N-cyclohexyl-2-benzothiazole sulfonamide and 1.0 to 2.0phr of hexamethoxymethyl melamine resin. The rubber prepared by the rubber formula provided by the invention has the advantages that the dynamic heat generation performance and compression deformation of the rubber material can be further reduced, so that the tire bead protection rubber and a wheel rim are perfectly matched in the dynamic state; the durable driving performance of the tire is ensured; the air preservation performance is obviously improved; the accident risks of tire ring bubbling and cracking possibly occurring in the use process of the tire are reduced.

The invention provides a rubber material for connecting a butyl inner tube and an inflating valve. The rubber material is composed of the following components in parts by weight: 80 to 120 parts of butyl rubber, 30 to 80 parts of soft carbon black, 5 to 30 parts of an activator, 5 to 35 parts of petroleum resin, 0.5 to 15 parts of tackifying resin, 2 to 22 parts of white carbon black, 0.2 to 3 parts of a coupling agent, 0.5 to 8 parts of an accelerant and 0.5 to 6 parts of insoluble sulfur. A preparation method of the rubber material for connecting the butyl inner tube and the inflating valvecomprises the following steps: S1, burdening; S2, internal mixing; S3, bolt lifting ; S4, bolt pressing; S5, feeding of master batch into an internal mixer; and S6, feeding of air-mixed rubber, the accelerant and the insoluble sulfur into the internal mixer. Due to the adoption of the above technical scheme, the bonding strength between the butyl inner tube and the inflating valve is high, the situation that the edge of the inflating valve is torn is avoided, the air-retaining property of the inner tube is improved, and the service life of the inner tube is prolonged.

The invention provides gluten-free cereal cakes and a making method thereof, and belongs to the technical field of foods. The gluten-free cereal cakes are made from the following raw materials in parts by weight of 0.2-0.5 part of gluten-free cereals, 0.2-0.5 part of eggs, 0.2-0.5 part of granulated sugar, 0.03-0.32 part of soybeans, 0.03-0.17 part of vegetable fat, 0.0008-0.012 part of transglutaminase, 0.0008-0.022 part of lactobacilli, 0.0048-0.022 part of yeast, 0.0008-0.0048 part of baking powder, 0.0008-0.027 part of NaCl, and 0.005-0.06 part of water. The gluten-free cereal cakes provided by the invention are soft, elastic, smooth when being eaten, and rich in nutrients.

The invention discloses an initiator of a building material and a preparation method and application thereof. The initiator comprises calcium stearate, aqueous solution of sodium hexametaphosphate, and fly ash. The initiator can effectively reduce the surface tension of a light building material slurry system, enhances the gas retention capacity of slurry and is favorable for ensuring that foamed pores formed in the foaming process of the slurry in gas, liquid and solid phase states are stable and uniformly distributed and have a closed pore structure; in addition, the pore size of the foamed pores can be adjusted by controlling the addition amount of the initiator. By the initiator, various light building materials with different components, different volume weight, different compression strength, different heat conduction coefficients and different application can be prepared, so that various properties of the light building materials can be obviously improved, and the requirements of modern rooms on the thermal insulation property, sound insulation property, energy saving property and the like of the building materials are met.

The invention discloses a hot runner mold. The hot runner mold comprises a runner plate structure and a spray nozzle structure. The runner plate structure is provided with a surface melt runner and a core layer melt runner. A base comprises an outer surface layer melt passageway, a core layer melt passageway and an inner surface layer melt passageway. Surface layer melt enters the surface layer melt passageway and then enters the outer surface layer melt passageway and the inner surface layer melt passageway of the spray nozzle structure through outlets. Core layer melt enters the core layer melt runner and enters the core layer melt passageway of the spray nozzle structure through an outlet. A discharge port of the core layer melt passageway is located between a discharge port of the outer surface layer melt passageway and a discharge port of the inner surface layer melt passageway. A convergence opening is formed by joining the discharge port of the core layer melt passageway, the discharge port of the outer surface layer melt passageway and the discharge port of the inner surface layer melt passageway. The outer surface layer melt, the core layer melt and the inner surface layer met enter the convergence opening at the same time, then enter an inlet of an injection nozzle and can finally be injected into a mold cavity in a layered manner. The hot runner mold is provided with the multiple layers of runners, different types of molten plastic can be injected into the mold cavity at the same time in a layered manner, and different materials can be injected onto a same bottle blank in a layered manner.

The invention discloses an air valve membrane material which is of a multi-layer co-extrusion membrane structure. The material comprises a first polyolefin functional layer, a second polyolefin functional layer and a middle barrier layer, two sides of the middle barrier layer are respectively combined with the first polyolefin functional layer and the second polyolefin functional layer through adhesive resin layers, and the middle barrier layer is a nylon barrier layer and/or an ethylene-vinyl alcohol copolymer barrier layer. The invention further provides an air valve membrane and an inflatable bag which are made of the air valve membrane material, the inflatable bag comprises an upper bottom membrane, a lower bottom membrane and the air valve membrane, the air valve membrane is arrangedat an opening between the upper bottom membrane and the lower bottom membrane, and the upper bottom membrane and the lower bottom membrane adopt membrane materials containing nylon barrier layers or ethylene-vinyl alcohol copolymer barrier layers. The product provided by the invention has better barrier property, significantly improved gas-retaining property, and has the advantages of high strength, puncture resistance, low cost and the like.

The invention provides an inner tube rubber material with a high performance on resisting cracks in break angles. The rubber material comprises butyl rubber, ethylene propylene diene monomer, butyl reclaimed rubber, fast extrusion furnace black, general furnace black, white factice, 168 carbon black, microcrystalline wax, a chemical anti-aging agent AFS/LG, an active agent ZnO, an active agent SA,a processing aid D-S, tackifying resin 1102, processing oil P-150, a vulcanizing agent S-325, a promoter M, and an accelerant TMTD. A proper proportion of butyl rubber, butyl reclaimed rubber and ethylene propylene diene monomer is selected; and the white factice, the AFS/LG and the carbon black with proper specifications and proportions are added, so that excellent folding resistance and gas-retaining property are obtained, the resilience of the rubber material is remarkably improved, the ozone resistance, the weather resistance and the thermal aging resistance of the rubber material are improved, and the service life of the inner tube is prolonged.