201results about How to "Intensity adjustment" patented technology

The invention relates to pavement repair, particularly a multifunctional quick repair material for cement concrete pavements, which is prepared by mixing the following raw materials in percentage by weight: 20-30% of magnesium oxide, 14-26% of ammonium monoacid phosphate, 9-14% of boric acid, 5-20% of aluminate cement, 2-10% of fly ash, 2-10% of rubber powder, 0.5-1.5% of polypropylene fiber, 0.5-1.5% of redispersible latex powder, silica sol and water; the silica sol accounts for 20-60% of the water. The preparation method of the multifunctional quick repair material for cement concrete pavements is implemented by proportionally mixing the raw materials. The material is convenient for construction, has enduring effect after curing, and has quick and enduring repair capacities for most damage forms of cement concrete pavements.

The invention relates to a compound type slurry curing agent for conducting curing treatment on waste slurry generated in geotechnical engineering (for example, investigation drilling, cast-in-place pile, anchorage engineering, trenchless construction and the like), as well as the sludge at the bottom of reservoirs, ditches, ponds, pools and the like. In the invention, the compound type slurry curing agent is prepared by adding and mixing fine sand, lime, industrial waste gypsum, fly ash and super absorbent resin in cement curing agent evenly according to a certain proportion. The slurry curing agent greatly improves the curing effect of slurry, reduces the use amount of cement and lowers the cost. Besides, by doping industrial wastes such as waste gypsum, fly ash and the like in cement, the pollution to the environment is abated, the recycle of wastes is promoted and favorable economic and social benefits are available.

The invention discloses a metal and ceramic bonding agent and a preparation method of the metal and ceramic bonding agent, a CBN grinding wheel and a manufacturing method of the CBN grinding wheel. The metal and ceramic bonding agent is composed of, by mass fraction, 75%-92% of ceramic and 8%-25% of metal. The ceramic is composed of, by mass fraction, 40%-65% of SiO2, 8%-35% of B2O3, 6%-20% of Al2O3, 5%-18% of Na2O5, 0.5%-5% of CaO, 3%-10% K2O, 0.5%-2% of MgO and 2%-6% of TiO2. The metal is composed of, by mass fraction, 55%-80% of Cu, 15%-30% of Sn and 5%-20% of Ni. The metal and ceramic bonding agent can be used as a CBN grinding wheel bonding agent and overcomes the defects that in the grinding process of the ceramic CBN grinding wheel, the surface roughness of a workpiece is large, chatter marks are generated easily, and impact resistance is poor.

The invention relates to a surface modification glass fiber and a preparation method and an application thereof, and belongs to the fields of surface modification fibers and preparation thereof. The preparation method is characterized in that the copolymer solution is adopted to be coated on the surface of the pre-processed glass fiber, wherein the copolymer used in the method comprises dodecyl methacrylate, styrene, and maleic anhydride; and the glass fiber is pre-processed by a coupling agent KH550. The surface modification glass fiber, provided by the invention, has the advantages that the preparation process is simple; the cost is low; the industrialization is facilitated; the dispersing performance and the heat stability of the modification glass fiber are good after the preparation method; and the surface modification glass fiber can be well bonded with thermoplastic resin.

The invention discloses an environmental-friendly tourmaline composite home decoration material. The environmental-friendly tourmaline composite home decoration material comprises the following raw materials in parts by weight: 2-20 parts of tourmaline powder, 20-80 parts of slag, 2-10 parts of activated carbon, 5-40 parts of a binding agent, 1-40 parts of an accessory and 0.1-0.3 part of an air entraining agent. The invention further discloses a preparation method of the material. By mainly utilizing various excellent characteristics of tourmaline, the prepared home decoration material has functions of releasing negative oxygen ions and emitting a far infrared ray, the problem of potential threats to a human body caused by an existing home decoration material is greatly changed, a great number of negative oxygen ions can be released, formaldehyde, peculiar smells and the like can be absorbed, dust and other small molecule compounds in air can be adsorbed, and the effects of purifying indoor environment and killing and inhibiting bacteria are achieved; moreover, a main body part is prepared by using the flag and Portland cement, and the material is low in price, easy to obtain, high in mechanical strength, light in weight, reusable, wide in application prospect and suitable for popularization and application.

The invention relates to a similar material for a fault mud burst model test and a preparing method thereof; the similar material comprises the components by weight: 1 part of a talcum powder, 2-7 parts of sand, 0.8-1.6 parts of gypsum, 0.2-0.6 part of bentonite, 0.01-0.4 part of liquid paraffin, and 0.2-0.7 part of mixing water. The preparing method comprises the steps: according to the proportion, weighing the talcum powder, sand, gypsum, bentonite and liquid paraffin; mixing evenly the talcum powder, sand, gypsum and bentonite in a stirrer; adding the mixing water, and fully stirring; adding the liquid paraffin and stirring; putting the mixed material into a molding die, and carrying out compaction molding; placing the molded material in a ventilated dry place for 24-36 h, and thus obtaining the similar material for the fault mud burst model test. The similar material can be slowly weakened and disintegrated under a water action, the disintegration performance can be changed through changing the composition, and a possibility is provided for fault mud burst in a process of real simulation of tunnel excavation.

The invention discloses a preset weak area 2.5D woven composite fragile cover, and belongs to the technical field of missile firing and protection. The preset weak area 2.5D woven composite fragile cover a throwing body and a framework wrapping the periphery of the throwing body. The combined position of the framework and the throwing body is divided into a weft separation area and a warp separation area. The invention further discloses a preparation method of the preset weak area 2.5D woven composite fragile cover. A 2.5D woven part reinforced epoxy resin composite serves as the material of the preset weak area 2.5D woven composite fragile cover; and according to the defect presetting manner in the weft separation area, the quantity of weft yarn keeps unchanged, and the density of warp yarn is reduced; and according to the defect presetting manner in the warp separation area, the quantity of warp yarn keeps unchanged, and the density of weft yarn is reduced. The fragile cover is light, the separation areas are novel in structure, a cover body is formed integrally and does not need to be cut, the strength of the fragile cover can be adjusted according to different pressure parameter requirements by adjusting the density of the yarn of the separation areas of the fragile cover, the fragile cover can bear pressure within a specific range and can be smoothly separated and thrown out under the action of missile gas flow, and the fragile cover is of a novel structure.

The invention relates to an internal combustion engine with a engine brake mechanism and a valve clearance compensation mechanism, and the internal combustion engine has at least a combustion chamber, from which exhaust gas can be discharged by means of at least an exhaust valve (3, 4). Furthermore, the internal combustion engine includes an engine brake mechanism (2) with an hydraulic valve auxiliary control unit (19), and the valve auxiliary unit is integrated in a connecting mechanism (5, 6, 7) for connecting the exhaust valve (5) and the camshaft, and the valve auxiliary control unit (12) keeps the exhaust valve (3) in a temporary opening position when operating the engine brake mechanism, and a hydraulic valve clearance compensation mechanism (37) for the exhaust valve (3, 4). The valve clearance compensation mechanism for oil supply is connected to a main oil circle. The hydraulic valve auxiliary control unit (19) is connected to another auxiliary oil circle equipped related to the main oil circle.

The invention relates to a road roller vibration device, a road roller rolling wheel and a road roller. The road roller vibration device comprises a device frame used for being fixedly connected with a supporting shaft of the road roller rolling wheel. Balance weight impacting blocks movably arranged in the vertical direction and drive devices used for driving the balance weight impacting blocks to move up and down in the vertical direction are arranged on the device frame. The device frame is further provided with an impacted portion used for bearing downward impact of the balance weight impacting blocks. Compared with the prior art, the dynamic mass of the road roller is larger than the static mass through motion and impact of the balance weight impacting blocks, energy counteracted by two eccentric blocks does not exist, so that the energy use rate can be effectively increased, the structure is simple, the manufacturing cost is low, and reliability is good.

The invention discloses special material and preparation method for injection molding level halogen-free flame retardation wire plug. The special material adopts elastic body and polyolefin resin as base material with expansion type flame retardant, flame retarding synergist, compatilizer, antioxidant and processing agent added. After intensive mixing, the special material is obtained through extrusion and pelleting by a BUSS mixing roll with autoweighing blanking device. The method has good mixing effect, stable compounding formula and high processing efficiency and the particles prepared via the method have even size and bright appearance. The flame retardation rating of produces prepared via the method reaches UL94V-0 level, the tiptop fusion index reaches 55g/10min, and Shore hardness is from 65A to 95A in case of qualified flame retardation level and high fusion index. The composite material provided by the invention is environmental-friendly material which completely meets current international environmental requirements on halogen-free material. The material which not only has good flame retardation performance and flowing property but also enables smooth surface and good felt of products is suitable for manufacturing various injection molding level wire plugs with high flame retardation requirements.

The invention discloses a 0Cr18Ni10Ti small-diameter seamless stainless steel capillary tube. The 0Cr18Ni10Ti small-diameter seamless stainless steel capillary tube comprises the following chemical components in percentage by mass: 0.029-0.031% of C, 0.55-0.59% of Si, 1.12-1.14% of Mn, 0.001-0.003% of S, 0.015-0.017% of P, 17.55-17.75% of Cr, 10.15-10.25% of Ni, 0.33-0.35% of Nb, 0.022-0.024% of Mo, 0.04-0.06% of N, 0.149-0.151% of Ti, 0.0013-0.0015% of Sb, 0.0007-0.0009% of Pb, 0.0012-0.0014% of Ce, 0.08-0.12% of rare earth elements and the balance of Fe and unavoidable impurities. The invention further discloses a production process of the 0Cr18Ni10Ti small-diameter seamless stainless steel capillary tube. The 0Cr18Ni10Ti small-diameter seamless stainless steel capillary tube has good flexibility, corrosion resistance, high temperature resistance, wear resistance, tensile strength and water resistance and also has excellent electromagnetic shielding performance.

The invention relates to an improving method for open caisson sinking construction in geology of a sludge layer. Sinking stability piles are changed from cement powder spraying piles into after-drilling injection grouting pillars. Construction of the after-drilling injection grouting pillars comprises the steps that (1) site leveling is conducted, surveying and lining are conducted to determine the positions of the after-drilling injection grouting pillars, and a drill is put in a position; (2) holes are formed by drilling an open caisson with the adoption of a single spiral drill; and (3) after the holes are formed, grouting is conducted to hole bottoms, after the hole bottoms are solidified, grouting is conducted while a drill bit is lifted, the after-drilling injection grouting pillars are formed until the drill bit is retreated from the formed holes. The after-drilling injection grouting pillars are stable in structure and good in uniformity. No large chiseling height difference is generated when opposite-chiseling is conducted. The open caisson sinking process is more stable.

The invention discloses application of an LED ultraviolet lamp source in photochemical blood inactivation treatment equipment. The LED ultraviolet lamp source can be applied to a methylene blue/visible light treatment method, a psoralen/UVA treatment method and a riboflavin/UV treatment method. The invention also provides full-automatic blood inactivation treatment equipment with the LED ultraviolet light source. The full-automatic blood inactivation treatment equipment with the LED ultraviolet light source comprises an outer case, a sample rack, a blood container and an LED ultraviolet lamp plate, wherein a control panel and a sample port are arranged on the front surface of the outer case; the sample rack is provided with a plurality of sample telescopic plates, and the sample telescopicplates can stretch out or draw back to the sample port; and the blood container is bag-shaped or tubular, and the blood in the container is static or dynamic. According to the equipment provided by the invention, a full-automatic control system is adopted, ultraviolet emission intensity of the LED ultraviolet lamp can be actively adjusted, the irradiation intensity can be increased, so that the treatment time is greatly shortened, the treatment efficiency is improved, and large-scale or miniaturized treatment can be realized.

The invention provides an experiment device used for verifying experiment laws of a photoelectric effect and measuring a Planck constant. The experiment device is characterized in that a monochromator and a photoelectric tube are arranged in a shading box; polarizing films are arranged in front of the photoelectric tube; the monochromator is connected with a controller, and the wave length of incident monochromatic light can be set through the controller; incident intensity can be set through an incident intensity controller; the photoelectric tube is connected with a measurement controller, and the photoelectric current of the photoelectric tube under different voltages can be measured through the measurement controller. The wave length and the intensity of the incident monochromatic light of the monochromator are set through the controller, and thus, the experiment laws of the photoelectric effect can be verified; an I-V curve of the photoelectric tube under the irradiation of different monochromatic light is mapped to determine a stopping voltage, and thus, the Planck constant can be worked out. According to the experiment device provided by the invention, by adopting a monochromatic source of which the wave length is continuous and adjustable, the incident intensity can be accurately controlled, the experiment laws of the photoelectric effect can be quantitatively verified, and the measurement accuracy of the Planck constant is improved. Moreover, data of students are not easy to be similar, and the I-V characteristic curve of the photoelectric tube also can be visually displayed in an oscilloscope.