45results about How to "Enhance structural strength" patented technology

The invention discloses a nano silicon dioxide modified hard wood wax oil and a preparation method thereof. The invention aims to overcome the defects of low drying speed and low hardness in the existing wood wax oil, and to be applied to furniture application instead of common wood wax oil or nitrocellulose paint/polyurethane paint. The product comprises the following raw materials in percentage by weight: 35-45% of modified hard tung oil or linseed oil, 15-25% of carnauba wax of which the softening point is 85-95 DEG C, 15-25% of linseed oil long oil alkyd of which the oil length is 78-80% and the solid content is higher than 98%, 3-5% of nano silicon dioxide of which the particle size is 60-80 nm, 20-30% of decyclized aromatic hydrocarbon of which the distillation range is 160-200 degrees, 1-2% of isooctoate compound drying agent and 0.3-0.5% of methylethylketoxime. The preparation method comprises the following steps: preparing a material A, preparing a material B, and mixing the material A and the material B.

The invention discloses a production process of a composite blockboard, comprising the following steps: sawing wood; rotary cutting; cutting boards; drying; Veneer; secondary cold pressing; secondary hot pressing; trimming; sanding; finished product. Compared with the prior art, the production process of the composite blockboard of the present invention can not only improve the flatness of products, ensure product quality, but also save labor costs, improve material utilization, reduce production costs, and improve product competitiveness.

The invention discloses cement for an intermediate frequency furnace lining. The cement is prepared from the components in percentage by mass: 70%-80% of dense corundum, 10%-20% of dense corundum powder, 5%-15% of a binder, 0.5%-2% of superfine powder, 0.5%-3% of an additive and 0.1%-5% of an explosion-proof agent. The cement has the characteristics of prolonged service life of the intermediate frequency furnace, high operation efficiency and simple maintenance and adapts to a highly heat environment.

The invention relates to a degradable quick plugging agent. The degradable quick plugging agent is composed of three parts, wherein a base solution A is prepared by graft copolymerization of sodium carboxymethylcellulose and acrylamide; a cross-linking agent B is composed of inorganic cross-linking agents CrCl3, FeCl2 and borax; and a base solution C is a gel breaker with a degradation action and composed of H2O2 and NaOH solution. Due to a solid hydrogel generated by the reaction between the base solution A and the cross-linking agent B, the swelling property and retention property of a plugging slurry are enhanced, the success rate of plugging is increased, and the repeatability of plugging is reduced. The plugging agent has high hardness in a working state and can be applied to high-pressure places; when plugging is not needed any more, the gel breaker base solution C can permeate in a plugging gel, and a plugging main body, namely the solid hydrogel, can be decomposed and broken in a period of time and is removed further.

The invention provides a tackifier for a drilling fluid. The tackifier is composed of a viscosity increasing agent and a dispersant, wherein the viscosity increasing agent is one or more of graphene-based substances, gum polymers, and nanoparticles; and the dispersant is one or more of coco glucoside, lauryl glucoside, sodium dodecylbenzenesulfonate, and sodium oleate. At the same time, the invention also provides the drilling fluid, and the drilling fluid comprises the following components in parts by weight: 64-70 parts of base oil; 1-3 parts of organic soil; 16-20 parts of calcium chloridebrine; 1-3 parts of an emulsifier; 1-3 parts of a filtrate reducer; 0.5-1.5 parts of a wetting agent; and 0.02-1.5 parts of the tackifier for the drilling fluid. Under the condition of a relatively small addition amount of the tackifier, a viscosity of the drilling fluid can be greatly increased, and the structural force of the drilling fluid is enhanced. At the same time, the drilling fluid in which the tackifier for the drilling fluid is added can improve the quality of a filter cake, a filtration loss amount of the drilling fluid is reduced, and the stability of a well wall is improved.

The invention discloses a preparation method of a high-performance heat-insulating composite plate. The preparation method of the high-performance heat-insulating composite plate particularly comprises the following steps: firstly, preparing cellulose toughened silicon dioxide aerogel particles from a cotton raw material as a raw material; secondly, mixing and stirring the prepared cellulose toughened silicon dioxide aerogel particles and cement uniformly; thirdly, sequentially adding a polycarboxylic acid water reducer, river sand, nanometer titanium dioxide, a foam stabilizer, a curing agentand deionized water, and mixing and stirring uniformly; fourthly, adding a foaming agent and stirring to prepare slurry; and finally, putting the prepared slurry into a mold to perform compression molding, and maintaining, demolding and cutting to prepare the high-performance heat-insulating composite plate. The prepared composite plate has excellent mechanical property and high heat-insulating property.

The invention provides a sulphoaluminate cement composition, and a preparation method and an application thereof. The sulphoaluminate cement composition comprises a sulphoaluminate cement base material, quartz sand, staple fiber, sawdust, nano-scale silicon dioxide, a water retention agent, a cement fast-drying agent, and a high-molecular cement water-reducing agent. According to the invention, a part of the quartz sand is fetched; various additives are added to the quartz sand, and the mixture is well mixed by stirring; the sulphoaluminate cement base material is added, and stirring is continued, wherein remaining quartz sand is added during the stirring process; and the cement composition can be obtained when the mixture is well mixed. With the ratio of the raw materials and with the interactions among the raw materials, the cement composition provided by the invention can be hardened fast. The cement composition can be applied in manufacturing home crafts or bathroom sets. An obtained finished product has the advantages of no internal injury, high structural strength, smooth surface, and uniform frost. The product has high strength and can stand box drop from a height of 60cm. The preparation process is highly efficient and has low cost. A qualification rate reaches 99%.

The invention relates to a self-lubrication liquid branched-polymer shear strength improving agent and a preparation method thereof and oil-based drilling fluid in the field of oil-based drilling fluid in petroleum drilling. The self-lubrication liquid branched-polymer shear strength improving agent is prepared from a substance A and a substance B through two-step reaction. The substance A refersto Xi-R<1>-X'j, wherein X refers to a carboxylate radical; X' refers to carboxylic acid anhydride; i and j are both greater than or equal to 0; the acid group amount x accords with that x=i+2j>/=2. The substance B refers to Ym-R<2>-Y'n, wherein Y refers to a -NH2 group or -NH group; Y' refers to an alcoholic hydroxyl group or phenolic hydroxyl group; m and n are both greater than or equal to 1; the alkaline group amount y accords with that y=m+n>/=2; i+2j+m+n is greater than or equal to 5; R<1> and R<2> are both straight chains, branch chains, cyclic aliphatic alkyl groups or aromatic alkyl groups, and a carbon atom number range is 1-72. Due to great self-lubrication and low-viscosity effects of branched polymer, integral structural force of an oil-based drilling fluid system can be increased, organic soil consumption and low-density solid phase tolerance of the oil-based drilling fluid system are decreased, and technical problems of rheological adjustment and borehole cleaning in a construction process of large-displacement wells and horizontal wells in application of the oil-based drilling fluid are solved.

The invention provides a rotor assembly for a disc motor and the disc motor. The rotor assembly for the disc motor comprises a rotor support disc, an annular hoop and a positioning pin, the rotor support disc is in a circular shape with a central opening, a boss is disposed on the outer circumferential surface of the rotor support disc, the annular hoop sleeves the rotor support disc, the inner circumferential surface of the annular hoop is provided with a clamping slot matched with the boss, and the positioning pin connects the rotor support disc with the annular hoop and used for limiting relative rotation between the rotor support disc and the annular hoop. The mode of sleeving the rotor support disc with the annular hoop is adopted, not only is the effect of enhancing the structural strength of a centrifugal force during high-speed rotation achieved, but also automatic weight reduction of an automatic dynamic balancing machine can be supported, the automatic production is met, andthe cost can be reduced.

The invention discloses an unfired clay tile and a production technology thereof. The clay tile comprises, by weight, 10-15 parts of natural colored sands, 10-15 parts of natural colored quartz sands, 3-5 parts of polyester resin, 2-5 parts of a shrinkage agent, 5-8 parts of alkali-free glass fibers, 0.5-1 part of zinc stearate, 1-2 parts of a skeleton reinforced material, 2-5 parts of light magnesium oxide and 0.02-0.05 part of an antioxidant. The production technology comprises the following steps: (1) mixing the polyester resin, polystyrene resin and zinc stearate according to the above formula, stirring the mixed raw materials, adding the natural colored sands, continuous stirring the mixed raw materials and the natural colored sands, adding the alkali-free glass fibers, the light magnesium oxide, the antioxidant and the natural colored quartz sands, and stirring all above raw materials; and (2 ) placing a product obtained in step (1) in a molding chamber, adding the skeleton reinforced material, and molding the product and the skeleton reinforced material to obtain the unfired clay tile. The unfired clay tile produced through the method has the advantages of high strength, high flexural and compressive strength, good toughness and light weight and is suitable for various roofings.

The invention provides a preparation method of a lifted cutting agent. The preparation method comprises the following steps: a styrene vinyl carboxylic acid copolymer, diamine and hydroxyl aliphatic acid are subjected to a reaction to obtain the lifted cutting agent. The lifted cutting agent takes the styrene vinyl carboxylic acid copolymer, diamine and hydroxyl aliphatic acid as raw materials, the lifted cutting agent has an alternative structure, can increase the structural force of drilling fluid, and has higher lifted cutting rate, the oil-based drilling fluid using the lifted cutting agent has high lifted cutting force and strong dynamic carrying and static suspension capability, and requirement of on-site construction can be better satisfied. The lifted cutting agent prepared by theabove technical scheme has a structure shown in a formula I. The invention also provides the oil-based drilling fluid of the lifted cutting agent.

The invention relates to a mortar concrete waterproof agent, which has the advantages of strong water and moisture resistance. The invention discloses a high-efficiency crack-resistant multifunctionalconcrete and mortar waterproof additive, which is prepared from 4-5 parts of polyvinyl alcohol, 3-4 parts of stearic acid, 3-4 parts of aqueous ammonia, 2-3 parts of tri-tincture ester and 90-110 parts of water. The mortar concrete waterproof agent has superior effect of water and moisture resistance, anti-seepage, and leaking stoppage.

The invention discloses a mine look-ahead water exploring orifice outburst prevention and blowout prevention joint water control device. The device comprises a sleeve body, and the sleeve body is fixedly sleeved with an orifice pipe. In the device provided by the invention, a motor and an air cylinder pulled by a stretcher are arranged in the sleeve body, a hollow rotary table is arranged on the air cylinder through a bracket, thus, a drilling tool located on the rotary table stretches out and draws back freely under a supporting action of an output end of the air cylinder, and consequently, the drilling tool can go in and out conveniently in a main hole; the sleeve body is sleeved with the orifice pipe, and a ring-shaped structure bearing frame is arranged through the orifice pipe, thus,a trepanning device and an applier can be conveniently arranged on the orifice pipe in one-to-one correspondence, and so, an intense pressure hole is arranged around a main hole so as to provide a firm protective structure for the main hole; the orifice pipe is orderly connected with a flow distributing pipe, a feeding pipe, a pressurizing pipe, an outburst prevention antifogging device and drilling tool slips, further, a first-stage controllable ball valve, a controllable brake valve, a second-stage controllable ball valve and a pressurizing valve are used, thus, adjusting one by one can be executed according to water fog situation in the main hole, and execution of an accurate water control operation is facilitated.