31results about How to "Increase the amount of filling" patented technology

The invention discloses self-retention heavy calcium carbonate and a preparation method thereof. Particles of the self-retention heavy calcium carbonate are in an aggregation form, the particle diameter D50 is equal to 5 to 10 microns, and D25 is more than or equal to 2.5 microns. The preparation method comprises the following steps of: (1) mixing and stirring calcite mineral powder, dispersant and water uniformly to obtain calcite mineral powder slurry; (2) delivering the mineral powder slurry obtained in the step (1) to a stirring grinder, and continuously grinding the mineral powder slurrytill the average particle diameter is 1.6 to 2.4 microns; and (3) transferring the slurry obtained after grinding in the step (2) into a modifying machine filled with a modifying agent, and continuously stirring the slurry till the slurry is fully aggregated. The self-retention heavy calcium carbonate product serving as a filling agent in papermaking pulp can fully replace the filling material such as talcpowder, light calcium carbonate and the like.

The invention discloses a construction method for pile head secondary molding waterproof construction, and relates to the technical field of concrete pouring pile pile head waterproof construction; the construction method includes the following steps: pile head breaking-pile head secondary molding tool mold assembly ‑Mold installation‑Pile head overmolding and cushion concrete pouring‑Mould removal‑Installation of expansion waterstops‑Waterproof mortar closure‑Floor waterproofing construction‑Pile head brushing with cement-based permeation crystallization‑Installation of pile head exposed reinforced plastic casing oil Paste potting tool molds, etc. From this, a set of pile head secondary forming tool molds and plastic ointment potting tool molds were designed. Through the implementation of this technical solution, the waterproof cross position between the pile head and the bottom plate can be effectively solved. There is a technical problem of leakage risk, which prevents the leakage risk and hidden dangers of the pile head waterproof construction, reduces the secondary repair cost of the pile head waterproof due to leakage, saves resources, and improves the construction efficiency and efficiency of the pile head secondary forming construction. Pile head waterproof construction quality.

The invention provides modified precipitated calcium carbonate prepared by crosslinking konjac gum on the surface through organic boron. The surface of modified precipitated calcium carbonate is crosslinked with the konjac gum through the organic boron. The invention aims to provide modified precipitated calcium carbonate which can significantly improve the tensile index, the burst index and the tear index of paper and the one-way retention rate of a filler when being applied to the filler in the paper. The invention further provides a preparation method and application of modified precipitated calcium carbonate. In addition, the invention further provides the paper containing modified precipitated calcium carbonate.

The invention discloses a modified composite attapulgite clay special for paper wadding and a method for producing the same. The modified composite attapulgite clay is composed of attapulgite clay, light / heavy calcium carbonate, and 1.5-2.5% of surface modifier based on the mass of the mixture, wherein mass ratio of the attapulgite clay to the calcium carbonate is 1:1-1.5. The method comprises: firstly selecting attapulgite clay deposit, in which mass percent of attapulgite clay is more than 30%, secondly, preforming of the attapulgite clay by a twin screw extruder, airing or drying until themass percent of water is less than 5%, and then crushing the preformed attapulgite clay to 4.5 mu m; subsequently, adding the calcium carbonate into a mixer, wherein the thickness of the calcium carbonate is 4.5 mu m, whiteness is more than 85, and the mass ratio is 1-1.1-1.5 based on the attapulgite clay; finally, adding the surface modifier of 1.5-2.5% based on the mass of the mixture and blending the mixtures for 10-30 minutes at 60-80 DEG C. to obtain the modified composite attapulgite clay. Accordingly, the modified composite attapulgite clay of the invention is applicable for paper wadding, which can obviously increase the retention and the intension of the paper articles, as well as better protect the environment.

The invention provides a goods supply device special for a drink vending machine, and belongs to the field of food equipment. The goods supply device comprises a cart body, foot stools, clapboards, containing mechanisms, guiding mechanisms, hoisting mechanisms, lifting mechanisms and feeding mechanisms, the inside of the cart body is hollow and is provided with a hollow chamber, belt pulley shaftgrooves are formed in the left side and the right side of the cart body, the foot stools are arranged at the four corners of the bottom of the cart body and are provided with wheels, the clapboards are equidistantly arranged inside the cart body, partition chambers are formed among the clapboards, the containing mechanism is fixedly connected to the rear portion of each partition chamber, the guiding mechanisms are arranged at the lower portions of the containing mechanisms, the hoisting mechanisms are arranged at the front portions of the guiding mechanisms, the lifting mechanisms are arranged at the front sides inside the partition chambers, and the feeding mechanisms are movably connected to the lifting mechanisms. The containing mechanisms are fixedly connected to the rear portions ofall the partition chambers, the guiding mechanisms are arranged at the lower portions of the containing mechanisms, classified placing of all different drinks is well achieved inside the cart body, and the drinks can slide on the hoisting mechanisms along the guiding mechanisms.

The invention provides modified precipitated calcium carbonate for crosslinking fenugreek gum on the surface through borax. Fenugreek gum is crosslinked on the surface of modified precipitated calcium carbonate through borax. The invention aims to provide modified precipitated calcium carbonate which can obviously increase the tensile index, the burst index, the tearing index and the filling one-way retention rate of paper when being applied to filling of the paper. Moreover, the invention further provides a preparation method and application of modified precipitated calcium carbonate; and furthermore, the invention further provides a piece of paper containing modified precipitated calcium carbonate.

The invention provides a guar gum-boric acid surface-crosslinking modified precipitated calcium carbonate. Guar gum is crosslinked on the surface of the modified precipitated calcium carbonate through boric acid. The invention aims to provide a modified precipitated calcium carbonate which can obviously enhance the tensile index, burst index and tear index of paper and the single-pass retention rate of the filler when being used in the filler of the paper. The invention also provides a preparation method and application of the modified precipitated calcium carbonate. Besides, the invention also provides a paper containing the modified precipitated calcium carbonate.

The invention discloses a curved plate grid of a lead-acid storage battery. The curved plate grid comprises a frame, a plurality of ribs arranged inside the frame and a lug arranged on the frame, wherein the frame comprises longitudinal frames and transverse frames, and the ribs comprise longitudinal ribs and transverse ribs; the longitudinal ribs and the transverse ribs are interwoven into a rib net; the longitudinal frames and the longitudinal ribs or transverse ribs are of a continuous curve shape with obvious crests and troughs; the transverse ribs are of a straight line, and are positioned between the adjacent crests and troughs of the longitudinal ribs; an included angle is formed between the upper surfaces or lower surfaces of the transverse ribs and a plane of the grid. Compared with an existing grid, the curved plate grid has the advantage that the coating thickness of an active material is greatly increased on the basis that the existing grid and the curved plate grid are equal in weight, so that the full-filling quantity of the active material is increased, and the specific energy of the lead-acid storage battery is increased; the bonding strength between the active material and the grid can be greatly enhanced, the active material is favorably prevented from falling off, and thus the service life of the lead-acid storage battery is prolonged.

The invention discloses a ceramic oxidation tube for the analysis of natural gas carbon isotopes, and aims to provide an oxidation tube with good oxidation effect, stable analysis data and long service life. There are copper oxide particles, and the particle size of copper oxide particles is 0.3-0.5mm; the inner diameter of the pipe is 1.2-1.5mm, and there are also pure copper particle areas on both sides of the high-temperature area in the pipe; the oxidation pipe of the present invention is used for natural gas carbon isotope analysis experiments .

The invention discloses a double-block type ballastless track bridge base transverse template positioning device that comprises a bridge base, a trapezoidal transverse template and a fixing device; the fixing device comprises a parallel fixing mechanism and a movable pressing mechanism, wherein the movable pressing mechanism is installed on the parallel fixing mechanism, and the movable pressing mechanism comprises a parallel pressing mechanism and a self-adaptive moving mechanism; the positioning device relates to the ballastless track field. According to the double-block type ballastless track bridge base transverse template positioning device, the fixing device convenient to fit and combine can be designed according to the shape and the installation mode of the transverse template; themoving trend of automatic sedimentation of the movable pressing mechanism on the fixing device is utilized to enhance the relevance of each template and the fixing device, so that the problems that the positioning device used by a common transverse template is difficult to associate with a plurality of transverse templates are solved; and when concrete is poured, the time difference of a deviationtrend of the transverse templates easily affects the concrete pouring efficiency can be effectively solved.

The invention discloses a preparation method of microcapsule paper. The method comprises the following steps: 1) using a sheet former to make a thin wet paper web with a weight of 15-20g / m2; 2) adding the microcapsule enveloping system between two wet papers through an interlayer filling process, 3) High-enveloping microcapsule paper is prepared by pressing and drying processes; wherein, the preparation method of the microcapsule enveloping system is: 21) Microcapsules with nano-fibrillated cellulose and β-cyclodextrin as the main body Mix and stir; form a CNF / microcapsule dispersion system; 22) at room temperature, add 1-3% lithium acrylate solution to the CNF / microcapsule dispersion system for pretreatment for 5-15min; 23) pretreat the CNF / microcapsule The dispersion system is centrifugally washed to neutrality; 24) Microcapsules with a solid content of 10%-15% are reenveloped in the washed CNF / microcapsule dispersion system, and the synergistic dispersion effect is supplemented by ultrasonic waves and stirring. The step-by-step enveloping microcapsule pre-enveloping system of the present invention can make the filling amount of microcapsules much higher than the content of microcapsules in paper made by mixing common pulp and microcapsules.

The invention discloses a catalyst feeding device which comprises a feed bin, a buffering bin, a feeding switching valve, a feed bin base, a conveying pipe and a distributor. The feed bin is positioned above the buffering bin and connected with the buffering bin through a bolt, and two sides of the bolt are respectively provided with a cushion block. The feeding switching valve is arranged between the feed bin and the buffering bin, the conveying pipe is a corrugated plastic hose, the upper end of the conveying pipe is connected with the buffering bin, the conveying pipe penetrates a central hole in the bottom of the feed bin base, the lower end of the conveying pipe is sleeved on the outer side of a distributing pipe of the distributor, and the lower portion of the buffering bin is placed in a frame of the feed bin base. The catalyst feeding device has the advantages that mechanical damage can be effectively prevented in the catalyst feeding process, catalysts are uniformly distributed, feeding speed is conveniently controlled, and the like.

The invention discloses a method for preparing capsule type papermaking filler by spray drying of starch. The method comprises the following steps: weighing starch with a certain quantity, evenly dispersing by water, and carrying out gelatinization; weighing papermaking filler with a certain quantity, dispersing by water, and homogenizing; mixing the papermaking filler with the homogenized starch, and homogenizing; carrying out spray drying on mixture of the papermaking filler and the gelatinized starch, and packing a starch layer onto the surface of papermaking filler particle to obtain the starch-packed capsule type papermaking filler. The method has the characters of simple technology, low cost, easiness in operation, obvious modification effect and the like. Compared with the unmodified papermaking filler, the capsule type papermaking filler can improve the filling quantity of paper, save the plant fiber raw materials, observably improve the physical strength performance of filling paper, and improve the quality of the final paper product.

The present invention claims to protect a displacement vector filling method based on the approximate spherical filling of energetic materials, which includes the steps of randomly placing spherical particles into the compression chamber according to the radius from large to small, and after completing the spherical particle placement stage , enter the adjustment stage; the adjustment stage is divided into three processes, that is, the spherical particles move to the negative direction of the x-axis according to the x-axis coordinates from small to large, and then move to the negative direction of the y-axis according to the y-axis coordinates from small to large, and finally press The z-axis coordinates move from small to large in the negative direction of the z-axis; in the present invention, after the above-mentioned particle movement, the inter-particle gaps are minimized, and the cabin can continue to be filled to increase the filling rate.