52results about How to "Avoid aging and cracking" patented technology

A protecting wax for rubber is proportionally prepared through mixing the paraffin wax with 40-70 deg.C for smelting point with microcrystalline wax with 70-90 deg.C for smelting point, and adding polyethene wax and the antioxidizing agent chosen from N-isopropyl-N-phenylbenzodiamine, dimethyl phthalate and 2,6-di-tert-butyl p-cresol. It can prevent ageing and cracking of rubber.

The emulsified oily lustering preservative agent for wooden floor and furniture consists of carnauba wax 2-6 wt%, coconut oil 0.5-5 wt%, dimethyl silicon oil 0.5-8 wt%, hydrogenated castor oil 0.1-1 wt% and non-ionic surfactant 1-2 wt% except water. Into the components, may be added anti-mildew agent isothiazolinone 0.01-0.05 wt% and perfume 0.01-0.2 wt%. With water, rather than organic matter, as solvent and environment friendly anti-mildew agent, the emulsified oily lustering preservative agent is non-toxic, harmless and environment friendly. It forms resin-like film on the surface of wooden article for protection and raising brightness.

The invention provides a aging resistance protection glue at tire side-wall and seam allowance part, which comprises components of natural rubber, brominated butyl rubber, high cis-butadiene rubber, ethylene-propylene diene copolymer, butyl reclaimed rubber, carbon black, eleaostearic acid, zinc oxide, octyl-phenolic tackifying resin, a hydrocarbon resin mixture, protection wax, naphthenic oil, sulphur and a promoter; and discloses a preparation method of the above rubber compound and an application method. The method changes a mode that the traditional rubber compound raw rubber system at the side-wall and seam allowance part rubber compound raw rubber system employs a combination mode of natural rubber and high cis-butadiene rubber, brominated butyl rubber with good aging resistance performance and high molecular chain saturation as well as high cis-butadiene rubber are added, a sulfuration system is optimized, thermo-oxidative aging resistance of the rubber compound can be increased, ozone aging resistance is increased; aging and cracking problems generated at the tire side-wall and seam allowance part can be avoided, tire usage security is increased, and refurbishment time of tire is increased.

The invention provides high-strength IGBT high-power module encapsulation silica gel and an encapsulation process thereof. The encapsulation gel is high in strength, can resist outside impact, is excellent in weather resistance and has high compatibility and adhesion strength with an IGBT power module. An effect of protecting and insulating the IGBT power module is effectively achieved. The encapsulation requirement of the high-power high-frequency high-voltage large-current IGBT power module is met. The silica gel provided by the invention is a two-component heating and curing adhesive and is prepared by mixing a component A and a component B according to a ratio of 1:1.

An upper protective layer structure of an impervious barrier structure of a municipal solid waste landfill is a protective layer structure for projecting an uppermost geotextile layer and geomembrane of the impervious barrier structure at the no-landfill-waste position during design of the upper leachate guide layer of the impervious barrier structure for a pebble bed landfill. The upper protective layer structure of the impervious barrier structure of the municipal solid waste landfill comprises a reservoir side wall slope. An impervious barrier lower structure, an impervious HDPE (high-density polyethylene) film and geotextile are sequentially arranged on the surface of the reservoir side wall slope from top to bottom. A wheat straw mud layer or rice straw mud layer is arranged on the geotextile. Geogrid is arranged in the middle of the wheat straw mud layer or rice straw mud layer in the area with gradient larger than 1:1. The wheat straw mud or rice straw mud firmly and durably protects the upper geotextile and the geomembrane of the impervious barrier structure. The upper protective layer structure has the advantages that structure is simple, construction is safe and convenient, materials are taken locally, quality is reliable, and protection of the geotextile and the geomembrane on the structure surface is evidently effective. Ageing and cracking of the geotextile and the geomembrane on the surface of the impervious barrier structure due to long-term rain and insolation are prevented, and impermeability of the impervious barrier structure is ensured.

The invention discloses an ageing cracking resistant ceramic bowl and its preparation method. The ceramic bowl is prepared from the following raw materials, by weight, 33-47 parts of meerschaum, 25-35 parts of leucite, 22-33 parts of barite, 18-26 parts of nacrite, 15-25 parts of glass flake, 4-8 parts of tea dust, 3-6 parts of calcium hexaboride, 9-16 parts of konjaku flour, 4-7 parts of soya lecithin, 2-4 parts of disodium ethylene diamine tetraacetate, 3-5 parts of poly-aluminum ferric silicate sulfate, 2-3 parts of CITREM, 4-6 parts of alkali lignin and 8-10 parts of antimicrobial powder. With addition of glass flake, tea dust and calcium hexaboride, chemical corrosion resistance and ageing resistance of ceramic tiles can be enhanced. In addition, with addition of konjaku flour, soya lecithin, poly-aluminum ferric silicate sulfate and the like, adhesive stress among mineral particles can be raised, and ageing cracking of ceramic tiles can be prevented effectively. The prepared ceramic bowl has excellent heat resistance, corrosion resistance and ageing resistance, is not easy to crack or break and has long service life.

The invention provides an environment-adaptive cable channel and a construction method thereof. The environment-adaptive cable channel comprises a channel body; a cement concrete layer is arranged atthe bottom and side of the channel body; the inner surface of the cement concrete layer is provided with a waterproof layer; the bottom of the waterproof layer is provided with a cable duct in the channel body through a support mechanism; an insulation filler is arranged in the channel body outside the cable duct; an earthing layer is arranged above the insulation filler; a heat-dissipating mechanism is arranged in the cable duct. The environment-adaptive cable channel can prove warmth retention for cables in winter so as to prevent aging and cracking of an insulating sheath, can provide ventilation and heat dissipation in summer to prevent the performance of cables from being affected, and is suitable for popularization and use in the south.

The invention discloses a high-temperature-resistant industrial cable formula, which comprises the following ingredients in parts by weight: 30 to 40 parts of PBT resin, 6 to 8 parts of composite stabilizing agents, 5 to 9 parts of filling agents, 2 to 4 parts of soapstone, 10 to 12 parts of antioxidants, 30 to 50 parts of polyvinyl chloride, 4 to 6 parts of plasticizing agents, 6 to 8 parts of lubricating agents, 5 to 11 parts of inorganic flame retardants and 4 to 10 parts of tetraphenyl ethylene. The high-temperature-resistant industrial cable formula has the advantages of high-temperature resistance, good anti-corrosion effect, long service life and the like.

The invention discloses a method for reducing noise of an urban air rail train by utilizing rubber wheels. The structure of the air rail train is characterized in that two J-shaped rails are arrangedon a cross beam of a door frame-shaped support frame, copper strips are embedded in the two J-shaped rails, the J-shaped rails are insulated from the cross beam of the door frame-shaped support frame,positive and negative electrodes of a direct current are connected on the copper strips arranged in the two J-shaped rails, and the upper half parts of the J-shaped rails are insulating baffles; thefront section of the bottom of a train head is provided with a permanent magnet synchronous motor, and the permanent magnet synchronous motor drives the nylon fiber rubber wheels to rotate; rotating shafts of the two carbon fiber rubber wheels are connected together through an insulating coupler, and then are fixed at the rear section of the bottom of the train head through bearing seats, the twobearing seats are insulated from the bottom of the train head; and the two carbon fiber rubber wheels are pressed on the two J-shaped rails correspondingly. According to the method, the permanent magnet synchronous motor rotates to drive the two nylon fiber rubber wheels to rotate, so that the noise generated by the friction between the rubber wheels and the J-shaped rails is extremely small.

The invention belongs to the technical field of river levee reinforcement, and particularly relates to a river levee reinforcing method. According to the river levee reinforcing method, ceramic particles are obtained with secondary settling sludge as raw materials, pre-treated acid-leached manganese slag is obtained by recovering acid-leached manganese slag, and finally, the ceramic particles, clay, the pre-treated acid-leached manganese slag and the like are mixed to obtain a cement-based mixture; biomass solid glue is obtained with corn starch as raw materials; the cement-based mixture is poured onto a bottom foundation of a to-be-reinforced river levee; an expansive cement layer is surrounded by impermeable cloth; and biogas slurry is poured from the top of the expansive cement layer, so that the river levee is reinforced. According to the river levee reinforcing method, gypsum can promote agglomeration of particles in the expansive cement layer, so that the expansive cement layer has high strength; moss and algae can grow on the surface of the impermeable cloth to distribute impetuous water flow, so that the impact strength of the water flow is weakened; meanwhile, the moss andthe algae can also be used as filler to fill cracks in the river levee, so that the strength of the river levee is improved; and the river levee reinforcing method has broad application prospects.

The invention relates to the field of wine making, in particular to an aroma enhancement method for baijiu fermentation. The method comprises a main fermentation period and an aroma producing period; yellow water is periodically sprayed to fermented grains in a closed fermentation pit in the early stage of the aroma producing period, the yellow water floods the fermentation pit in the middle stage, and the fermented grains are lifted layer by layer after the yellow water in the fermentation pit is pumped off in the last stage. Through circulating and flooding of the yellow water in and the aroma producing period after main fermentation is finished, generation of aroma substances such as ester in the fermented grains in the fermentation pit is effectively promoted, the content of aroma substance ingredients is effectively increased, and improvement of the baijiu quality is promoted.

The invention discloses a ceramic coloring process. The ceramic coloring process comprises the following steps: preparing a coloring agent through selection and mixing of a coloring compound and chemical raw materials, ball milling of the obtained mixture in a ball mill, sieving of the ball-milled mixture and mixing the screened mixture with a solvent; and then uniformly spraying the coloring agent onto the surface of a ceramic blank, drying the ceramic blank in a constant-temperature drying box, subjecting the dried ceramic blank to secondary atomizing spraying with the coloring agent, sintering the ceramic blank at normal pressure after drying of the coloring agent, preserving heat for 3 h after the ceramic blank is sintered to 1250 to 1400 DEG C from room temperature, and calcining theceramic blank for 6 to 12 h so as to obtain a finished product. Thus, the ceramic coloring process is low in cost and simple in process; a sprayed ceramic has a smooth glaze and a gorgeous surface color; added zirconia effectively prevents the surface of the ceramic from cracks caused by ageing; and the ceramic coloring process has good application prospects.

The invention discloses a thermal insulation wooden wall and a preparation method thereof. The wooden wall is formed by piling up and combining a plurality of wooden plate units through a plurality ofconnecting frames. Base plate lugs are arranged on two adjacent lateral sides of each wooden base plate, wherein base plate grooves are formed in the other two adjacent lateral sides of each wooden base plate. The wooden wall is formed by piling up the multiple wooden plate units and the connecting frames in a butt-joint splicing method, that is, the base plugs on the two adjacent lateral sides of the wooden base plates in the wooden plate units are clamped into bottom support grooves of bottom supports and vertical support grooves of vertical supports located on the left sides of the bottomsupports correspondingly, the base plate grooves in the other two adjacent lateral sides of the wooden base plates are clamped to cross beam lugs on bottom surfaces of cross beams and vertical supportlugs of the vertical supports located on the right sides of the cross beams correspondingly, accordingly, single wooden wall blocks are obtained, and by piling up other connecting frames in a butt-joint splicing mode, the integrated wooden wall space is formed.

The invention discloses a high-rotating-speed oil seal for a new energy gearbox. The high-rotating-speed oil seal comprises an outer diameter, a main lip is fixedly arranged on one side of the outer diameter, the outer part of the main lip is sleeved with a metal framework, the metal framework is arranged in the inner part of the outer diameter in an embedded manner, a forming face is arranged onone side of the main lip, a two-way oil return line is arranged on one side of the forming face, a PTFE coating is arranged on the surface of the forming face in a sprayed manner, a spring groove is formed in the outer wall of the main lip, a spring is fixedly arranged on the inner wall of the spring groove, a spring retaining lip is arranged on one side of the spring and fixedly arranged on the main lip, a front chamfer is formed in one side of the outer wall of the outer diameter, a back chamfer is formed in the other side of the outer wall of the outer diameter, and a surface fixing clearance is fixedly arranged on the other side of the outer diameter. According to the high-rotating-speed oil seal for the new energy gearbox, the PTFE coating is arranged on the surface of the forming face in a sprayed manner, so that friction between the lip part and a shaft is reduced, sealing is improved, the service life at the high rotating speed is prolonged by matching with the design of the main lip, in addition, the requirement of two-way operation is met through the two-way oil return line, it is guaranteed that the gearbox is kept in a sealed state in the high rotating speed state, andthe situation that oil leakage condition occurs is avoided.

The invention relates to a plastic runway which comprises an elastic base layer, a reinforcing layer and an anti-skid layer which are sequentially arranged from bottom to top. A plurality of positioning holes are formed in the upper surface of the elastic base layer, and positioning pieces matched with the positioning holes are arranged on the lower surface of the reinforcing layer; and rubber particles are distributed on the surface of the anti-skid layer. The plastic runway is high in elasticity and good in shock resistance and shock absorption performance, sporters can be effectively protected, and knee injuries caused by high ground hardness in the sports process of the sporters are prevented; and meanwhile, the plastic runway is high in flatness, stable in performance, good in weatherresistance and long in service life.

The invention discloses ultra-tear-resistant mixing rubber and a preparation method thereof. The ultra-tear-resistant mixing rubber comprises the following materials in parts by weight: 60-65 parts of constant-viscosity natural rubber, 35-40 parts of rare-earth butadiene rubber, 75-85 parts of white carbon black, 7.5-8.5 parts of silane coupling agent, 1.5-2.5 parts of antioxidant, 15-25 parts of white oil, 1.8-2.5 parts of stearic acid, 3.5-5 parts of zinc oxide, 1.4-1.8 parts of guanidine accelerator, 1.7-2 parts of sulfenamide accelerator and 0.8-1.2 parts of sulfur. The invention develops a formula of the ultra-tear-resistant mixing rubber, and by adoption of the formula, the formula of traditional dog-chewing rubber, adopting livestock skin as main materials, can be replaced, and the problems of short service life, larger hardness and easy deterioration of the traditional molar rods or dog-chewing rubber are solved.

The invention discloses a synchronously-constructed asphalt base cloth sealing layer. The synchronously-constructed asphalt base cloth sealing layer comprises a first bonding layer connected with a base layer, a second bonding layer connected with a surface layer and a piece of polypropylene cloth connected between the first bonding layer and the second bonding layer, and the first bonding layer and the polypropylene cloth are synchronously constructed through a base cloth sealing layer construction vehicle. The synchronously-constructed asphalt base cloth sealing layer can effectively prevent water seepage, delay reflection of base layer cracks and treat base layer top surface cracks, and the characteristics of integrity, continuity, high overload-resisting capacity and the like of a road surface structure are guaranteed; and the base cloth sealing layer construction vehicle can well solve the problem that construction of similar base cloth is not convenient. The synchronously-constructed asphalt base cloth sealing layer is suitable for various road surface structures, and especially suitable for areas where the traffic is heavy, the underground water level is high, the temperature is high and the raining frequency is high, and mountainous and heavy hill areas, and the synchronously-constructed asphalt base cloth sealing layer can further be used as a bonding layer for a cement concrete bridge deck, a white-to-black road surface, an asphalt road surface overlaying layer and the like, and a bottom layer of a synchronously-constructed asphalt crushed stone sealing layer.

The invention discloses a sealing packing for a steam chamber of a tire vulcanizer and a method for producing the same. The sealing packing comprises a main body core pattern made of mixing rubber, and further comprises a fiber cord fabric reinforced layer arranged on the main body core pattern, wherein the fiber reinforced layer is coated on an outer surface where the main body core pattern is contacted with a lower half mold of the steam chamber. By coating the fiber reinforced layer outside the main body core pattern made of mixing rubber, the fiber of the reinforced layer can effectively prevent aging cracks of the rubber and can increase the using times of the packing while enhancing the entire intensity of the packing. Therefore, the sealing packing and the method improve the sealing effect of the steam chamber during a vulcanizing process of the tire vulcanizer, stabilize the tire vulcanization process, enhance the quality of a tire product and lower the production cost of the tire.