34results about How to "Various molding methods" patented technology

The invention discloses a combination bearing type large-specification movable elbow mechanism. The combination bearing type large-specification movable elbow mechanism comprises elbows, connection heads, a pressing cover, a packing seal component and a rotating component, wherein positions between the elbows and the connection heads as wall as between the elbows are fixedly connected through thepressing cover and are sealed through the packing seal component, cavities are formed at the positions between pressing cover and the connection heads as wall as between the pressing cover and the elbows and are internally provided with the rotating component, the rotating component is used for relative rotating of the connection heads or the elbows and comprises a centripetal bearing and a thrustbearing, and the elbows and the connection heads as wall as the elbows are flexibly connected. The combination bearing type large-specification movable elbow mechanism has the beneficial effects thatthe combination bearing type large-specification movable elbow mechanism is flexible in connection, smooth in rotating, simple in structure, not limited by the pipe diameter, also not limited by theelbow structure molding method, small in volume and diversified in molding method.

The invention relates to a method for making a building material by low-temperature ceramic modified industrial side product gypsum, belonging to the building material technical field. The compositions adopted by the method are mixed according to the following mass ratio that: gelating material: side product gypsum: filler: activator: auxiliary agent: water reducing agent: polymer emulsion: solvent is equal to 100:300-900:50-500:80-150:12-30:1.0-10:0-50:50-500. The raw materials respectively undergoes raw material treatments such as gelating material powder preparation, waste gypsum treatment, filler crushing screening and polymer emulsion-solvent mixing and so on, and then are made into a building material which takes low-temperature ceramic mineral generated by the hydration of an inorganic waste residue gelating material as matrix phase and waste residue particle, waste gypsum and a hydration product thereof as disperse phase through the mixing, forming and maintenance working operation of a semi-finished product raw material. The building material has excellent mechanical property, high comprehensive utilization rate of wastes, more derivative products and stable performance.

The invention discloses a strontium barium niobate glass ceramic material with high dielectric constant and high breakdown field strength and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing SrCO3, BaCO3, Nb2O5, CaCO3, SiO2, H3BO3 and BaF2, uniformly melting at 1300-1400 DEG C, molding and rapidly annealing to obtain annealed glass; crystalizing the annealed glass at the crystallization temperature and then cooling in a furnace to obtain the strontium barium niobate glass ceramic material. By adopting a melting method to prepare the strontium barium niobate glass ceramic material, the method is simple and convenient, and various molding methods are available. The strontium barium niobate glass ceramic material is treated at first and then is subjected to XRD (X-Ray Diffraction), SEM and EDS tests, and the test results prove that the strontium barium niobate glass ceramic material prepared by the method disclosed by the invention is ferroelectric glass ceramic with high dielectric constant, high breakdown field strength and low dielectric loss.

The invention relates to a NaNbO3 phase containing Na2O-K2O-Nb2O5-SiO2 low dielectric loss energy storage glass ceramic material, the microcrystal glass material is prepared by mixing a glass phase and a crystal phase, fusing, cooling and molding, annealing, and conducting crystallization heat treatment; wherein the glass phase accounts for 20% according to mole percent, and the balance is the crystal phase; the crystal phase is prepared by heating and fusing Na2CO3, K2CO3 and Nb2O5 at the molar ratio of x:(1-x):1, wherein x is more than or equal to 0.7 and less than or equal to 1. The dielectric loss of the prepared potassium-sodium niobate based energy storage microcrystal glass material is low; the added Na2CO3 not only has an effect on regulating the composition of the crystal phase ofa potassium-sodium niobate system, but also has a certain effect on promoting the crystallization process, the NaNbO3 phase favorable for the high energy storage density is formed, and the high energy storage density glass ceramic material is finally obtained.

The present invention provides an electrostatic precipitator, comprising an electrically charged unit and an electrostatic dust collection unit, and the electrostatic precipitator is characterized in that: the electrostatic dust collection unit adopts a spacer made from a metal material or an inorganic conductive material to keep a certain distance between dust collection plates and sheets. The air contact surface of the dust collection plates and sheets is made from an insulation material, so that adjacent dust collection plates and sheets may not be conducted. The spacer can be prepared by stamping molding of a metal plate such as an aluminum plate and a copper plate, also can be prepared by die-cast molding, metal bar pressing molding, and other manners, and an inorganic conductive material also can be used. Compared with a traditional electrostatic precipitator, electrostatic precipitator has the advantages of high efficiency, no arc discharge, low ozone and higher security.

The invention relates to a KNN-based (sodium potassium niobate-based) energy storage microcrystalline glass material with ultralow dielectric loss and a preparation method. The microcrystalline glass material is prepared from a glass phase and a crystal phase through mixing, fusing, cooling and molding, annealing, carrying out crystallization heat treatment, wherein according to mol percent, the glass phase accounts for 20 percent to 50 percent and the balance is the crystal phase; the crystal phase is composed of K2CO3, Na2CO3, Nb2O5 and BaCO3 at a mol ratio of (3-x) to (3-x) to 6 to 2x and x is more than 0 and less than or equal to 2.5. The KNN-based energy storage microcrystalline glass material prepared by the preparation method has extremely low dielectric loss; BaO is introduced, has the effect of adjusting the composition of the crystal phase of a sodium potassium niobate system and also has a certain promotion effect on a devitrification process and devitrification is accelerated by rare-earth metal ions; the BaO can also generate a pinning effect, and adverse impacts, caused by interface polarization, on breakdown and worsening are weakened; finally, the microcrystalline glass material with a high dielectric constant is obtained.

The invention discloses a composite foam sound insulation material. The material is composed of the following components in parts by weight: 49 parts of halogenated butyl rubber sulfurization system, 120 parts of sound insulation material master batch, and 40 parts of foaming master batch; wherein the halogenated butyl rubber sulfurization system comprises the following components in parts by weight: 30 parts of halogenated butyl rubber, 12 parts of promoter, 2 parts of promoter, 2 parts of anti-coking agent, 1 part of promoter, and 3 parts of sulfurization agent; the foaming master batch comprises the following components in parts by weight: 20 parts of halogenated butyl rubber and 20 parts of foaming agent; the sound insulation material master batch comprises the following components in parts by weight: 50 parts of halogenated butyl rubber, 50 parts of sound insulation material, and 20 parts of plasticizer. The invention also discloses a preparation method of the composite foam sound insulation material. The composite foam sound insulation material has the advantages of good sound insulation and sound absorbing property, light weight, and excellent heat insulation property, and at the same time has the characteristics of adaptability to various appearances in the actual use, excellent elasticity, fire retardant property, environment-friendliness, and chemical corrosion resistance.

The invention provides a flame-retardant smoke-inhibition light-weight high-strength high-molecular material, and a preparation method thereof. The flame-retardant smoke-inhibition light-weight high-strength high-molecular material comprises following steps: 1, a gelatinizing agent, an oil phase reaction monomer, an oil phase crosslinking agent, an initiator, and a composite flame-retardant smoke-inhibition agent are mixed, and are stirred to be uniform, a dispersion phase is added for emulsification so as to form a uniform fine gel emulsion which is stagnant in upside down position; the gel emulsion is subjected to thermal induced polymerization reaction, and after reaction drying is carried out so as to obtain the flame-retardant smoke-inhibition light-weight high-strength high-molecularmaterial. The flame resistance of the flame-retardant smoke-inhibition light-weight high-strength high-molecular material is capable of reaching V-0 grade or higher only with slightly reduced mechanical performance.

The invention discloses a profile-matched bonding glass fiber reinforced plastic transmission shaft and its production technology. The profile-matched bonding glass fiber reinforced plastic transmission shaft comprises a metal flange and a glass fiber reinforced plastic intermedium tube, which are adhered together. The metal flange and the glass fiber reinforced plastic intermedium tube have a bonding matching surface. The metal flange and the glass fiber reinforced plastic intermedium tube both have a polygonoun and arc transition matching profile. The bonding matching surface of the metal flange and the glass fiber reinforced plastic intermedium tube is a polygonoun and arc transition bonding structure. Through the profile-matched bonding surface, torsional rigidity for self-locking between the matched profile will be greatly increased; bonding strength reliability is greatly raised; and by the adoption of the conical surface matched bonding surface, during the bonding process, matching between the metal flange and the glass fiber reinforced plastic intermedium tube has a self-centering effect, bonding operation difficulty can be reduced, and bonding manufacturability is raised.

The invention relates to a glass ceramic capable of regulating and controlling a glass network structure to realize high dielectric constant and high breakdown performance and a preparation method thereof. The glass ceramic material is prepared by compounding a crystal phase and a glass phase, wherein the crystal phase is prepared from raw materials through mixing, melting, cooling molding, annealing and crystallization heat treatment; the crystal phase is prepared from La2O3, Na2CO3, K2CO3 and Nb2O5 in a molar ratio of x: (35-x): 5: 40 (x is equal to 0, 1, 3, 5 and 10); the glass phase is SiO2; the molar ratio of the crystal phase to the glass phase is 4: 1. The potassium-sodium niobate-based dielectric glass ceramic material prepared by the invention is high in dielectric constant and high in breakdown strength. According to the invention, La2O3 is added, so that a glass matrix obtains a compact glass network structure, and then the dielectric constant is improved through a reasonable crystallization treatment system.

The invention relates to a nanometer air guide fiber membrane for improving fiber composite material appearance and a preparation method and application thereof. The nanometer air guide fiber membrane comprises release layers which are arranged on the upper surface and the lower surface respectively, a nanometer air guide membrane layer and a fiber cloth layer which are arranged between the upper release layer and the lower release layer. According to the nanometer air guide fiber membrane for improving the fiber composite material appearance, the phenomena that the appearance in the original product is out of flatness, lack of glue and has pinholes are overcome, excess gas is exported by the nanometer air guide membrane, at the same time, by means of the composite structure of the nanometer air guide membrane and the fiber cloth, the introduction of the gas between layers is effectively reduced, the preparation method is simple, the technological process is short, the forming way is diversified, and it is beneficial to obtaining a full and smooth appearance, the quality and yield rate of the product are improved.