51results about How to "Enhanced destructive strength" patented technology

The present invention provides a mask filter exhibiting a high antimicrobial/antiviral activity, a high dust filtration ability, a high ventilation characteristic, a high failure-strength and a high workability into a mask and the mask produced using such mask filter. An antimicrobial polyolefin fiber sheet is provided wherein the polyolefin fiber sheet has one or more spots in which 1/100 or more by volume of individual inorganic antimicrobial agent particles are exposed on surfaces of polyolefin fibers per fiber sheet area of 1.0×10⁻² mm² or has one or more spots in which the inorganic antimicrobial agent particles are exposed on the surfaces of polyolefin fibers each occupying an area of 0.01 μm² or larger per fiber sheet area of 1.0×10⁻² mm². Such polyolefin fiber sheet is arranged as the core layer and this core layer is sandwiched between upper and lower layers of dry nonwoven fabric to form the mask filter in the form of a laminated sheet. Such mask filter is used to form the mask.

The invention relates to a steel structure building beam or a steel structure pillar node interface, which is used for connecting convergent nodes of a steel structure building beam or a steel structure pillar and overcoming the shortages of toilsome assembly, bad accuracy, low connection strength, and the like in the existing connection mode. The steel structure building beam or pillar node interface is composed of joints of the end part of the beam or the pillar and joint seats converged on the node, wherein the joints lack a half at the end part in the horizontal direction to form a ladder shape. The shape and the size of the joint seats are the same with that of the joints. A connection insertion tenon is arranged on a mutual faying surface formed when the joint is butt jointed with the joint seat, the connection insertion tenon is vertical to the faying surface and a fastening structure for preventing the joint and the joint seat from horizontally separating is arranged at the faying position of the joint and the joint seat. According to invention, the steel structure building beam or pillar node interface has the beneficial effects that the faying mode bearing of the interface has large bearing capacity; the steel structure building beam-pillar node interface has high longitudinal tensile strength, is provided with the fastening member for preventing the joint and the joint seat from horizontally separating so that the connection of the node of the beam and the pillar has multi-directional higher anti-breaking strength, has a simple structure, and is convenient to manufacture and install; and with the adoption of the steel structure building beam or pillar node interface, the conditions are created for modularization, standardization and serialization of steel structure housing construction.

The invention discloses a multi-stage anti-impact supporting column which comprises a top cover, an energy absorption barrel top cover, hydraulic columns, a multi-stage liquid energy absorption barrel, a trench energy absorption barrel, a hydraulic cylinder top cover, an alloy hydraulic cylinder, a piston, a hydraulic cylinder base, a three-purpose valve and the like, wherein the multi-stage liquid energy absorption barrel is sleeved in the hydraulic columns; the hydraulic columns are sleeved in the prefabricated trench energy absorption barrel; the prefabricated trench energy absorption barrel is sleeved in a light-weight and high-intensity hydraulic cylinder; under a condition of high dynamic load, the multi-stage liquid energy absorption barrel is used for performing quick abdication and energy absorption to prevent the phenomenon that inner elements of the three-purpose valve and column bodies of the hydraulic columns are damaged due to dramatic increasing of pressure in a hydraulic cylinder at the moment of impact and implement quick absorption of the energy which is caused by impact ground pressure and is applied to the supporting column; furthermore, the remote three-purpose valve is used for realizing a function of remotely lifting the supporting column, so that the injuries to people caused by surrounding rock collapse during column falling are avoided, and the safety of workers is guaranteed.

The invention provides the powder composition for a refractory castable and a refractory castable equipped therewith. The powder composition for refractory castable is high in breaking strength, light in weight and low in thermal conductivity. Alumina-zirconia hollow particles are adopted as the essential ingredients of the powder composition for a refractory castable. The alumina-zirconium hollow particles comprise 67-99 % of Al2O3 by mass and 1-33 % of ZrO2 by mass with the total mass thereof over 96%.

The invention discloses a preparation process for an ultrathin ceramic brick. Blank raw materials comprise the following components in percentage by weight: 35-40% of clay, 25-30% of feldspar, 8-13% of lithium chinastone, 5-10% of aluminum ore and 15-20% of white sand; the preparation process comprises the following steps: preparing materials, pulping, preparing powder, forming and drying, biscuiting, glazing and printing, carrying out glaze firing, carrying out fine trimming and packaging. Through the adoption of the preparation process disclosed by the invention, the dosage of raw materials is reduced, the ball-milling time and sintering time are shortened to some extent, and the sintering temperature is reduced to some extent, so that sewage discharge, exhaust emission and consumption of energy and raw materials are reduced greatly and manpower resources are saved greatly.

The invention provides a heat-resistant and reusable shielding material (11). The shielding material (11) is made of a polymer alloy with a sea-island structure, and polyolefin is used as a continuous phase in the sea-island structure. And use engineering plastics selected from methylpentene copolymer, polysulfone, polyethersulfone, polyphenylene sulfide, polyphenylene ether, polyamideimide, polyetherimide, polyetheretherketone resin One, two or more are dispersed phases.

An optical fiber has a plurality of holes in a cladding around a core, and has a high failure strength and small transmission loss. The core is made of glass. The cladding surrounds the core, and the holes are formed in the cladding so as to extend along a central axis of the fiber. The holes are formed with constant intervals therebetween along a circle centered on the core, and each hole has a substantially circular cross section. The cladding is sectioned into two claddings. A residual stress in an inner region that is inside a circumcircle of the holes is a compressive stress.

The invention discloses a method for treating nickel-iron slag and a ceramic brick. The method comprises the following steps: (1) mixing nickel-iron slag, bentonite, silica and red mud molten slag toobtain a mixed material; (2) finely grinding the mixed materials to obtain a powder material; (3) performing spraying pelletizing treatment on the powder material to obtain a granular material; (4) performing molding treatment on the granular material to obtain raw material plates; (5) performing drying treatment and sintering on the raw material plates sequentially, thereby obtaining ceramic bricks. By adopting the method, high-quality ceramic bricks can be prepared from metallurgy wastes, namely nickel-iron slag, a novel way for resource utilization of the nickel-iron slag is developed, andremarkable economic benefits and environment benefits are made.

The invention discloses a high-stability battledore frame and a manufacturing process thereof. The manufacturing process comprises the following steps: 1) preparing raw materials; 2) coiling a battledore frame; 3) fixing; 4) molding. By reducing the FAW, the battledore frame is manufactured through coiling according to an overlapped symmetric increase method, symmetric distribution of overlapped layers is improved, coils of the battledore frame can be effectively increased, the wall thickness of the cross section of the battledore frame can be reduced, the weight distribution uniformity consistence of the cross section of the battledore frame can be improved, and the battledore frame has stable rigidity, high strength and good playing performance.

The invention discloses an antibacterial and antistatic ceramic glaze with high wear resistance and a preparation method for a ceramic tile. Glaze materials for the ceramic glaze comprise an antistatic glass frit, a composite antibacterial nanoparticle, an inorganic oxide whisker and stamp-pad ink, wherein the mass ratio of the antistatic glass frit, the composite antibacterial nanoparticle, the inorganic oxide whisker and the stamp-pad ink is (1-1.5):(0.5-0.8):(0.5-2):(2-2.5); the fineness of the antistatic glass frit is 60 to 125 meshes. The antibacterial and antistatic ceramic glaze with high wear resistance has the characteristics of stable antistatic effect, good antiskid effect and antifouling peroperty and high high-temperature resistance; a process for preparing an antibacterial and antistatic ceramic tile with high wear resistance from the ceramic glaze is simple and convenient to operate.

The invention discloses a preparation method of high-performance vacuum stone, and belongs to the technical field of vacuum stone preparation. The preparation method comprises the following steps: (1)preparing a modified filler; (2) weighing raw materials; (3) preparing a mixture; (4) carrying out material distribution; (5) forming. The preparation method is invented to avoid the defects of the existing vacuum stone. The preparation method of the high-performance vacuum stone is researched and developed; by adding the modified composite filler and improving the preparation process, the waterabsorption and wear-resistant volume of the vacuum stone are effectively reduced, the water resistance and wear resistance of the vacuum stone are remarkably improved, the breaking strength of the vacuum stone is improved, the mechanical property of the vacuum stone is improved to a great extent, the comprehensive performance is excellent, and the application range is wide.

The invention provides a porcelain head type pin composite insulator and a porcelain head bonding process. The porcelain head bonding process comprises the following steps: preparation of an adhesive:mixing epoxy resin after heat preservation and a curing agent according to a mass ratio of 1: 0.8-1.2, and defoaming under negative pressure to obtain the adhesive; treatment of bonded parts: dippingabsolute ethyl alcohol into a clean rag for cleaning one end of the core rod with the external thread and the interior of the small hole I of the porcelain head, smearing a silane coupling agent after the ethyl alcohol is completely volatilized, and airing at room temperature for later use; bonding of the porcelain head: quantitatively injecting the prepared adhesive into the small hole I of theporcelain head, then uniformly smearing the adhesive into a threaded groove in the threaded end of the core rod, then screwing the upper end part, combined with the porcelain head, of the core rod into the small hole I, and then manually cleaning the adhesive overflown from the combined part of the porcelain head and an umbrella tray string; and heating curing: placing the bonded porcelain head composite insulator into an oven at the temperature of 130 DEG C to 170 DEG C to be subjected to heat preservation curing, so that the cost of the pin type composite insulator is reduced, and the electrical performance is improved.

The invention discloses a wall fixing agent modified resin polymer for drilling fluid. The wall fixing agent is prepared from the following raw materials: 200 to 220 parts of clear water, 20 to 30 parts of starch, 8 to 10 parts of 40% sodium hydroxide aqueous solution, 5.0 to 10.0 parts of 2-chloroethyl trimethyl ammonium chloride, 20 to 30 parts of acrylamide, 10 to 20 parts of methacryloyloxyethyl trimethyl ammonium chloride, 0.5 to 1 part of initiator, 10 to 20 parts of potassium nitrohumate, 10 to 20 parts of pseudo-boehmite, 0 to 12 parts of poly(1,3-propylidene pyridine chloride) and 20to 30 parts of adjuvant. The performance of the wall fixing agent is as follows: the water content is less than or equal to 10.0%, the low-temperature medium-pressure filtration loss is less than or equal to 10 mL, the wall fixing agent is aged for 16 h at normal temperature, high temperature of 150 DEG C and 180 DEG C, and the high-temperature high-pressure filtration loss is less than or equal to 30.0 mL. The drilling fluid can resist the high temperature of 180 DEG C or above, the filter loss is effectively reduced, the cementing force between rocks is enhanced, and the breaking strength isimproved, so that the well wall is stabilized, collapse is avoided, the safety of drilling engineering is ensured, and the drilling fluid also has the advantages of environmental friendliness and good biodegradability.

The invention is applicable to the field of high polymer materials, and provides dam adhesive, a preparation method of the dam adhesive, fumed silica and a preparation method of the fumed silica. Thedam adhesive includes a component A and a component B, wherein the component A is prepared from 30 to 50 parts of vinyl silicone oil, 5 to 40 parts of vinyl silicone oil, 10 to 50 parts of silicon resin, 5 to 20 parts of modified fumed silica and 0.1 to 2 parts of photoinitiator; the component B comprises the following components in parts by weight: 30-50 parts of vinyl silicone oil, 5-40 parts ofvinyl silicone oil, 10-40 parts of hydrogen-containing silicone oil, 5-20 parts of modified fumed silica, 5-20 parts of silicon resin, 0.1-2 parts of an adhesive and 0.01-2 parts of a thixotropic agent; during use, the component A and the component B are mixed according to the weight ratio of 1 : (0.8-1.2). The dam dam adhesive has the advantages of moderate viscosity, low curing temperature, easiness in application, good compatibility with a base material and an organic silicon liquid optical adhesive and the like, can be stored at normal temperature and has good storage stability.