CN113149505A - Preparation process of self-lubricating spherical polycarboxylic acid high-performance water reducing agent - Google Patents
Preparation process of self-lubricating spherical polycarboxylic acid high-performance water reducing agent Download PDFInfo
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- CN113149505A CN113149505A CN202110162493.9A CN202110162493A CN113149505A CN 113149505 A CN113149505 A CN 113149505A CN 202110162493 A CN202110162493 A CN 202110162493A CN 113149505 A CN113149505 A CN 113149505A
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- polycarboxylic acid
- reducing agent
- water reducing
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
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Abstract
The invention discloses a preparation process of a self-lubricating spherical polycarboxylic acid high-performance water reducing agent, belongs to the field of water reducing agents, and comprises the following steps: copolymerization and glue preparation; wrapping the sandwich; preparing a modified sandwich ball; the modified sandwich ball formed by polyacrylamide gel and nanoscale calcium oxide particles can wrap the polycarboxylic polymer and form a spherical structure with the polycarboxylic polymer, so that the lubrication degree of the polycarboxylic polymer in use is improved, the friction force between the particles is reduced, the viscosity of concrete is reduced to a certain extent, the construction of the concrete is facilitated, the construction difficulty is reduced, the construction cost is reduced, and in the using process, due to the fact that the polyacrylamide is hydrolyzed, the calcium oxide can effectively react with water to generate heat, the temperature influence of the water reducing agent in the using process is improved, the environmental applicability of the water reducing agent is improved, and the slump retaining property of the water reducing agent is improved.
Description
Technical Field
The invention relates to the field of water reducing agents, in particular to a preparation process of a self-lubricating spherical polycarboxylic acid high-performance water reducing agent.
Background
The water reducing agent is a concrete admixture capable of reducing the water consumption for mixing under the condition of maintaining the slump constant of concrete basically. Most of them are anionic surfactants, such as lignosulfonate and naphthalene sulfonate formaldehyde polymer. After the concrete mixture is added, the dispersion effect on cement particles is achieved, the workability of the concrete mixture can be improved, the unit water consumption is reduced, and the fluidity of the concrete mixture is improved; or the unit cement consumption is reduced, and the cement is saved. In many concrete projects, the traditional high-efficiency concrete such as naphthalene series cannot meet the engineering requirements more and more due to the limitation of technical performance.
The polycarboxylic acid high-performance water reducing agent really designs an effective molecular structure according to the action mechanism of the dispersed cement, has a super-dispersion type, can prevent the slump loss of concrete without causing obvious slow setting, exerts a higher plasticizing effect under low dosage, has good fluidity retention, large freedom degree on cement adaptation to wide molecular structure, multiple synthesis technologies, large scope of high performance, has obvious concrete reinforcing effect, can reduce concrete shrinkage, has the technical performance characteristics of extremely low content of harmful substances and the like, gives excellent construction workability, good strength development and excellent durability to the concrete, has good comprehensive technical performance advantages and environmental protection characteristics, and meets the requirements of modern concrete engineering.
However, the existing polycarboxylic acid high-performance water reducing agent has a high viscosity in the use process due to the characteristics of a molecular structure, and in the preparation of concrete with a high admixture and low water-cement ratio, the viscosity of the concrete is improved, the pumping and construction of the concrete are not facilitated, the construction difficulty is improved, and the construction cost is increased.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a preparation process of a self-lubricating spherical polycarboxylic acid high-performance water reducing agent, which can wrap a polycarboxylic acid polymer by a modified sandwich ball formed by polyacrylamide gel and nano calcium oxide particles, and form a spherical structure with the polycarboxylic acid polymer, so that the lubrication degree of the polycarboxylic acid polymer in use is improved, the friction force between the particles is reduced, the viscosity of concrete is reduced to a certain extent, the construction of the concrete is facilitated, the construction difficulty is reduced, the construction cost is reduced, and in the use process, the polyacrylamide is hydrolyzed, so that the calcium oxide can effectively react with water to generate heat, the temperature influence of the water reducing agent in the use process is improved, the environmental applicability of the water reducing agent is improved, and the slump retaining property of the water reducing agent is improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A preparation process of a self-lubricating spherical polycarboxylic acid high-performance water reducing agent comprises the following steps:
s1, copolymerization glue preparation: the polyacrylamide gel is prepared by taking an acrylamide aqueous solution as a raw material and carrying out polymerization reaction under the action of an initiator;
s2, wrapping a sandwich: adding nano-scale calcium oxide particles into the polyacrylamide gel to wrap the nano-scale calcium oxide particles by the polyacrylamide gel;
s3, preparing a modified sandwich ball: granulating and drying the polyacrylamide gel coated with the nano-scale calcium oxide particles to prepare a modified sandwich ball for later use;
s4, esterification reaction: preparing macromolecular monomer polyethylene glycol monomethacrylate and water by using polyethylene glycol and methacrylic acid to react;
s5, polymerization reaction: macromolecular monomer polyethylene glycol monomethacrylate and water are prepared by ammonium sulfate initiation and aqueous solution polymerization to obtain a polymerization product;
s6, neutralization reaction: adding an alkali plate into the polymerization product, and reacting to obtain a polycarboxylic acid high-performance water reducing agent consisting of polycarboxylic acid polymers, wherein the main chain of the polycarboxylic acid high-performance water reducing agent is strip-shaped and carries strip-shaped branched chains;
s7, synthesis of the modified sandwich ball: the modified sandwich ball and the polycarboxylic acid polymer are subjected to synthetic reaction in a reaction kettle, the polyacrylamide gel on the outer layer of the modified sandwich ball wraps the main chain and the branched chain of the polycarboxylic acid high-performance water reducing agent, and a lubricating layer is formed on the outer side of the modified sandwich ball, so that the main chain and the branched chain of the polycarboxylic acid high-performance water reducing agent and the nano-scale calcium oxide particles are wrapped in the lubricating layer;
s8, preparation is completed: and (3) granulating and drying the polymer prepared in the reaction kettle to prepare the self-lubricating spherical polycarboxylic acid high-performance water reducing agent. The modified sandwich ball formed by polyacrylamide gel and nanoscale calcium oxide particles wraps the polycarboxylic polymer and forms a spherical structure with the polycarboxylic polymer, so that the lubrication degree of the polycarboxylic polymer in use is improved, the friction force between the particles is reduced, the viscosity of concrete is reduced to a certain extent, the construction of the concrete is facilitated, the construction difficulty is reduced, the construction cost is reduced, and in the using process, due to the hydrolysis of the polyacrylamide, the calcium oxide can effectively react with water to generate heat, the temperature influence of the water reducing agent in the using process is improved, the environmental applicability of the water reducing agent is improved, and the slump retaining property of the water reducing agent is improved.
Further, the synthesis method of step S7 is:
m1, heating the reaction kettle to 180-200 ℃ for heat preservation;
m2, putting the modified sandwich ball into the reaction kettle in advance, slowly stirring, and stirring for 15-25 min;
m3, after stirring, adding a polycarboxylic acid high-performance water reducing agent consisting of polycarboxylic acid polymers into the reaction kettle;
m4. heating the reaction kettle to 200 deg.C and 240 deg.C, and keeping the temperature;
m5. stirring for 20-30min to complete the synthesis. The modified sandwich ball is added in advance to soften the polycarboxylic acid polymer in advance, the polycarboxylic acid polymer added later is effectively wrapped to form a sphere, the wrapping degree of the modified sandwich ball on the polycarboxylic acid polymer is effectively improved, the balling efficiency of the polycarboxylic acid polymer is improved, and the lubricity of the self-lubricating spherical polycarboxylic acid high-performance water reducing agent is improved.
Further, the reaction kettle comprises a machine body, a stirring assembly is connected in the machine body, a baffle is fixedly connected to the upper inner wall of the machine body, a pair of auxiliary energy increasing assemblies matched with the stirring assembly are connected to the lower end of the baffle, the two auxiliary energy increasing assemblies are respectively positioned on the left side and the right side of the stirring assembly, a pair of reset assemblies matched with the auxiliary energy increasing assemblies are connected to the upper end of the baffle, and a self-rotation assembly matched with the auxiliary energy increasing assemblies is connected to the lower end of the baffle;
the auxiliary energy increasing assembly comprises an auxiliary rotating rod, a pair of arc-shaped through holes are formed in the baffle, the auxiliary rotating rod is connected in the arc-shaped through holes in a sliding mode, the rotation assembly comprises an annular plate, the lower end of the baffle is fixedly connected with an annular plate, a plurality of inner gear teeth which are distributed circumferentially are fixedly connected to the inner end of the annular plate, and a rotation gear which is connected with the inner gear teeth in a meshed mode is fixedly connected to the outer end of the auxiliary rotating rod. Drive supplementary energization subassembly through the stirring subassembly and produce the removal, make rotation gear produce under the effect of the internal teeth of a cogwheel and rotate, supplementary stirring subassembly stirs the inside mixture of organism, improves the movement potential energy between the mixture, improves machining efficiency, improves economic benefits.
Further, the stirring subassembly is including gear motor, organism upper end fixed mounting has gear motor, gear motor output fixedly connected with puddler, the puddler lower extreme extends to in the organism, the puddler lower extreme extends to the downside of baffle to rotate with the baffle and be connected, a plurality of main blades of puddler lower extreme fixedly connected with. The speed reduction motor is used as main power to drive the stirring rod and the main blades to rotate, so that the mixture in the machine body is stirred, the mixture can be fully reacted and synthesized, and the intermolecular movement speed is increased.
Furthermore, the outer end of the stirring rod is fixedly connected with a stirring plate, and the left end and the right end of the stirring plate are respectively provided with a stirring inclined plane matched with the auxiliary rotating rod. Through stirring the board and cooperating with supplementary bull stick, when the puddler drove the stirring board and produces the pivoted, stir the board and contact with supplementary bull stick to promote supplementary bull stick and remove in the arc through-hole, provide the self-driving power for supplementary bull stick, the kinetic energy that rational utilization gear motor produced improves the kinetic energy utilization ratio, reduces the waste of energy.
Further, supplementary bull stick lower extreme extends to the annular plate downside, supplementary bull stick lower extreme fixedly connected with a plurality of supplementary pockets, a plurality of energy-increasing blades of supplementary pocket outer end fixedly connected with. The energizing blades increase the contact area of the mixture in the auxiliary rotating rod and the machine body, and then effectively assist the stirring assembly to stir the mixture, improve the movement speed of the mixture, promote the mixing reaction between the mixture, improve the synthesis efficiency, and improve the uniformity of the modified sandwich ball to the poly carboxylic acid polymer.
Furthermore, the lower end of the rotation gear is fixedly connected with a protection block, the lower end of the annular plate is fixedly connected with an annular baffle, and the lower end face of the antiskid block is in contact with the upper end face of the annular baffle. The annular baffle supports the overall structure of the auxiliary energy increasing assembly through the protection block, the stability of the auxiliary energy increasing assembly is effectively improved, the gravity abrasion is reduced, and the service life of the auxiliary energy increasing assembly is prolonged.
Further, the reset assembly comprises an arc-shaped box body, the upper end of the baffle is fixedly connected with the arc-shaped box body, an arc-shaped guide rod is fixedly connected in the arc-shaped box body, the outer end of the arc-shaped guide rod is slidably connected with a reset slider, a pair of reset springs are sleeved at the outer end of the arc-shaped box body, and the reset springs are respectively located on the front side and the rear side of the reset slider. The slider that resets produces the removal along arc guide arm to receive reset spring's deformation power to resume the position, can effectively drive supplementary energy increasing subassembly and produce in the organism and remove, make supplementary energy increasing subassembly effectively supplementary stirring subassembly act on, increase supplementary energy increasing subassembly's effort.
Further, the lower end of the reset sliding block is fixedly connected with a T-shaped rod, a T-shaped groove is formed in the upper end of the auxiliary rotating rod, and the lower end of the T-shaped rod extends into the T-shaped groove and is rotatably connected with the auxiliary rotating rod. Through mutual cooperation in T type pole and T type groove, make T type pole drive under the effect that supplementary bull stick produced the removal, can not influence the rotation of supplementary bull stick, effectively realize supplementary bull stick removal and pivoted simultaneous emergence, improve the power of energizing blade effect and mixture, improve the motion intensity of mixture.
Further, a pair of inlet pipes rather than the switch-on of organism upper end fixedly connected with, the equal fixed mounting in both ends has the feed control case about the organism, the inlet pipe upper end is put through with the feed control case mutually, the inlet pipe lower extreme extends to the baffle downside, control flap is installed to the inlet pipe outer end. Through the control of the feeding control box, the modified sandwich ball and the polycarboxylic acid polymer are put in step by step, so that the reaction kettle is convenient to use, the automation degree of the work of the reaction kettle is improved, and the input of manpower is reduced.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) according to the scheme, the modified sandwich ball formed by polyacrylamide gel and nanoscale calcium oxide particles wraps the polycarboxylic acid polymer, and forms a spherical structure with the polycarboxylic acid polymer, so that the lubrication degree of the polycarboxylic acid polymer in use is improved, the friction force between the particles is reduced, the viscosity of concrete is reduced to a certain extent, the construction of the concrete is facilitated, the construction difficulty is reduced, the construction cost is reduced, and in the using process, due to the fact that polyacrylamide generates hydrolysis, calcium oxide can effectively react with water to generate heat, the temperature influence of the water reducing agent in the using process is improved, the environmental applicability of the water reducing agent is improved, and the slump retaining property of the water reducing agent is improved.
(2) The modified sandwich ball is added in advance to soften the polycarboxylic acid polymer in advance, the polycarboxylic acid polymer added later is effectively wrapped to form a sphere, the wrapping degree of the modified sandwich ball on the polycarboxylic acid polymer is effectively improved, the balling efficiency of the polycarboxylic acid polymer is improved, and the lubricity of the self-lubricating spherical polycarboxylic acid high-performance water reducing agent is improved.
(3) Drive supplementary energization subassembly through the stirring subassembly and produce the removal, make rotation gear produce under the effect of the internal teeth of a cogwheel and rotate, supplementary stirring subassembly stirs the inside mixture of organism, improves the movement potential energy between the mixture, improves machining efficiency, improves economic benefits.
(4) The speed reduction motor is used as main power to drive the stirring rod and the main blades to rotate, so that the mixture in the machine body is stirred, the mixture can be fully reacted and synthesized, and the intermolecular movement speed is increased.
(5) Through stirring the board and cooperating with supplementary bull stick, when the puddler drove the stirring board and produces the pivoted, stir the board and contact with supplementary bull stick to promote supplementary bull stick and remove in the arc through-hole, provide the self-driving power for supplementary bull stick, the kinetic energy that rational utilization gear motor produced improves the kinetic energy utilization ratio, reduces the waste of energy.
(6) The energizing blades increase the contact area of the mixture in the auxiliary rotating rod and the machine body, and then effectively assist the stirring assembly to stir the mixture, improve the movement speed of the mixture, promote the mixing reaction between the mixture, improve the synthesis efficiency, and improve the uniformity of the modified sandwich ball to the poly carboxylic acid polymer.
(7) The annular baffle supports the overall structure of the auxiliary energy increasing assembly through the protection block, the stability of the auxiliary energy increasing assembly is effectively improved, the gravity abrasion is reduced, and the service life of the auxiliary energy increasing assembly is prolonged.
(8) The slider that resets produces the removal along arc guide arm to receive reset spring's deformation power to resume the position, can effectively drive supplementary energy increasing subassembly and produce in the organism and remove, make supplementary energy increasing subassembly effectively supplementary stirring subassembly act on, increase supplementary energy increasing subassembly's effort.
(9) Through mutual cooperation in T type pole and T type groove, make T type pole drive under the effect that supplementary bull stick produced the removal, can not influence the rotation of supplementary bull stick, effectively realize supplementary bull stick removal and pivoted simultaneous emergence, improve the power of energizing blade effect and mixture, improve the motion intensity of mixture.
(10) Through the control of the feeding control box, the modified sandwich ball and the polycarboxylic acid polymer are put in step by step, so that the reaction kettle is convenient to use, the automation degree of the work of the reaction kettle is improved, and the input of manpower is reduced.
Drawings
FIG. 1 is a schematic diagram of the process flow structure of the present invention;
FIG. 2 is a schematic structural view of a main section of a reaction kettle according to the present invention;
FIG. 3 is a schematic structural diagram of a synthesis method of the present invention;
FIG. 4 is a schematic axial view of the stirring assembly of the present invention;
FIG. 5 is a schematic axial view of the rotation assembly of the present invention;
FIG. 6 is a schematic bottom view of the toggle plate of the present invention;
FIG. 7 is a schematic cross-sectional exploded view of the reset assembly and auxiliary energizing assembly of the present invention;
FIG. 8 is a schematic bottom view of the baffle of the present invention;
FIG. 9 is a schematic bottom view of the reduction assembly of the present invention;
FIG. 10 is a schematic view of the frame structure of the process equipment of the present invention;
FIG. 11 is a schematic view of the internal structure of the self-lubricating spherical polycarboxylic acid-based high-performance water reducing agent of the present invention;
FIG. 12 is a schematic view of the internal structure of a modified sandwich ball according to the present invention;
FIG. 13 is a schematic structural diagram of a polycarboxylic acid-based high-performance water reducing agent according to the prior art.
The reference numbers in the figures illustrate:
the device comprises a machine body 1, a baffle 2, an arc-shaped through hole 201, a stirring assembly 3, a speed reducing motor 301, a stirring rod 302, a main blade 303, a stirring plate 304, an auxiliary energization assembly 4, an auxiliary rotating rod 401, an auxiliary sleeve block 402, an energization blade 403, a rotation gear 404, a T-shaped groove 405, a reset assembly 5, an arc-shaped box 501, an arc-shaped guide rod 502, a reset sliding block 503, a reset spring 504, a T-shaped rod 505, a rotation assembly 6, an annular plate 601, an inner gear tooth 602, an annular baffle 603 and a feeding control box 7.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-13, a process for preparing a self-lubricating spherical polycarboxylic acid high-performance water reducing agent comprises the following steps:
s1, copolymerization glue preparation: the polyacrylamide gel is prepared by taking an acrylamide aqueous solution as a raw material and carrying out polymerization reaction under the action of an initiator;
s2, wrapping a sandwich: adding nano-scale calcium oxide particles into the polyacrylamide gel to wrap the nano-scale calcium oxide particles with the polyacrylamide gel (see fig. 12);
s3, preparing a modified sandwich ball: granulating and drying the polyacrylamide gel coated with the nano-scale calcium oxide particles to prepare modified sandwich balls for later use (see figure 12);
s4, esterification reaction: preparing macromolecular monomer polyethylene glycol monomethacrylate and water by using polyethylene glycol and methacrylic acid to react;
s5, polymerization reaction: macromolecular monomer polyethylene glycol monomethacrylate and water are prepared by ammonium sulfate initiation and aqueous solution polymerization to obtain a polymerization product;
s6, neutralization reaction: adding an alkali plate into the polymerization product, and reacting to obtain a polycarboxylic acid high-performance water reducing agent consisting of polycarboxylic acid polymers, wherein the main chain of the polycarboxylic acid high-performance water reducing agent is long and carries a strip-shaped branched chain (see fig. 13);
s7, synthesis of the modified sandwich ball: carrying out synthetic reaction on the modified sandwich ball and a polycarboxylic acid polymer in a reaction kettle, wrapping the main chain and the branched chain of the polycarboxylic acid high-performance water reducing agent by polyacrylamide gel on the outer layer of the modified sandwich ball, forming a lubricating layer on the outer side of the modified sandwich ball, and wrapping the main chain and the branched chain of the polycarboxylic acid high-performance water reducing agent and nano-scale calcium oxide particles in the lubricating layer (see figure 11);
s8, preparation is completed: and (3) granulating and drying the polymer prepared in the reaction kettle to prepare the self-lubricating spherical polycarboxylic acid high-performance water reducing agent (see figure 11). The modified sandwich ball formed by polyacrylamide gel and nanoscale calcium oxide particles wraps the polycarboxylic polymer and forms a spherical structure with the polycarboxylic polymer, so that the lubrication degree of the polycarboxylic polymer in use is improved, the friction force between the particles is reduced, the viscosity of concrete is reduced to a certain extent, the construction of the concrete is facilitated, the construction difficulty is reduced, the construction cost is reduced, and in the using process, due to the hydrolysis of the polyacrylamide, the calcium oxide can effectively react with water to generate heat, the temperature influence of the water reducing agent in the using process is improved, the environmental applicability of the water reducing agent is improved, and the slump retaining property of the water reducing agent is improved.
Example 2:
referring to fig. 1 to 13, wherein the same or corresponding components as those in embodiment 1 are designated by the same reference numerals as those in embodiment 1, only the points different from embodiment 1 will be described below for the sake of convenience. This example 2 differs from example 1 in that: referring to fig. 3, the synthesis method of step S7 includes:
m1, heating the reaction kettle to 180-200 ℃ for heat preservation;
m2, putting the modified sandwich ball into the reaction kettle in advance, slowly stirring, and stirring for 15-25 min;
m3, after stirring, adding a polycarboxylic acid high-performance water reducing agent consisting of polycarboxylic acid polymers into the reaction kettle;
m4. heating the reaction kettle to 200 deg.C and 240 deg.C, and keeping the temperature;
m5. stirring for 20-30min to complete the synthesis. The modified sandwich ball is added in advance to soften the polycarboxylic acid polymer in advance, the polycarboxylic acid polymer added later is effectively wrapped to form a sphere, the wrapping degree of the modified sandwich ball on the polycarboxylic acid polymer is effectively improved, the balling efficiency of the polycarboxylic acid polymer is improved, and the lubricity of the self-lubricating spherical polycarboxylic acid high-performance water reducing agent is improved.
Example 3:
referring to fig. 1 to 13, wherein the same or corresponding components as those in embodiment 1 are designated by the same reference numerals as those in embodiment 1, only the points different from embodiment 1 will be described below for the sake of convenience. This example 3 differs from example 1 in that: referring to fig. 2, the reaction kettle comprises a machine body 1, a stirring assembly 3 is connected in the machine body 1, a baffle 2 is fixedly connected to the upper inner wall of the machine body 1, a pair of auxiliary energization assemblies 4 matched with the stirring assembly 3 are connected to the lower end of the baffle 2, the two auxiliary energization assemblies 4 are respectively located on the left side and the right side of the stirring assembly 3, a pair of reset assemblies 5 matched with the auxiliary energization assemblies 4 are connected to the upper end of the baffle 2, and a rotation assembly 6 matched with the auxiliary energization assemblies 4 in a rotation direction is connected to the lower end of the baffle 2; referring to fig. 5, the auxiliary energy increasing assembly 4 includes an auxiliary rotating rod 401, a pair of arc through holes 201 are formed in the baffle 2, the auxiliary rotating rod 401 is slidably connected in the arc through holes 201, the rotation assembly 6 includes an annular plate 601, an annular plate 601 is fixedly connected to the lower end of the baffle 2, a plurality of inner gear teeth 602 which are circumferentially distributed are fixedly connected to the inner end of the annular plate 601, and a rotation gear 404 which is engaged with the inner gear teeth 602 is fixedly connected to the outer end of the auxiliary rotating rod 401. Drive supplementary energization component 4 through stirring subassembly 3 and produce the removal, make rotation gear 404 produce under the effect of inner teeth of a cogwheel 602 and rotate, supplementary stirring subassembly 3 stirs organism 1 inside mixture, improves the movement potential energy between the mixture, improves machining efficiency, improves economic benefits.
Referring to fig. 4, the stirring assembly 3 includes a speed reduction motor 301, the speed reduction motor 301 is a prior art, and a person skilled in the art can select a suitable type of speed reduction motor 301 according to actual needs, for example: the model is EDSMT-2T 110-050A's gear motor 301, and 1 upper end fixed mounting of organism has gear motor 301, gear motor 301 output fixedly connected with puddler 302, and in puddler 302 lower extreme extended to organism 1, puddler 302 lower extreme extended to the downside of baffle 2 to be connected with baffle 2 rotation, a plurality of main blades 303 of puddler 302 lower extreme fixedly connected with. The speed reduction motor 301 is used as a main power to drive the stirring rod 302 and the main blade 303 to rotate, so that the mixture in the machine body 1 is stirred, the mixture can be fully reacted and synthesized, and the movement speed between molecules of the mixture is increased.
Referring to fig. 6, the outer end of the stirring rod 302 is fixedly connected with a toggle plate 304, and toggle slopes matched with the auxiliary rotating rod 401 are arranged at the left and right ends of the toggle plate 304. Cooperate through stirring board 304 and supplementary bull stick 401, drive stirring board 304 and produce the pivoted in puddler 302, stir board 304 and supplementary bull stick 401 contact to promote supplementary bull stick 401 and remove in arc through-hole 201, for supplementary bull stick 401 provides from transmission power, the kinetic energy that rational utilization gear motor 301 produced improves the kinetic energy utilization ratio, reduces the waste of energy.
Referring to fig. 4, the lower end of the auxiliary rotating rod 401 extends to the lower side of the annular plate 601, the lower end of the auxiliary rotating rod 401 is fixedly connected with a plurality of auxiliary sleeve blocks 402, and the outer ends of the auxiliary sleeve blocks 402 are fixedly connected with a plurality of energizing blades 403. The energizing blades 403 increase the contact area of the auxiliary rotating rod 401 and the mixture in the machine body 1, so that the mixture is effectively stirred by the auxiliary stirring component 3, the movement speed of the mixture is increased, the mixing reaction between the mixture is promoted, the synthesis efficiency is improved, and the uniformity of the modified sandwich ball for wrapping the polycarboxylic acid polymer is improved.
Referring to fig. 8, the lower end of the rotation gear 404 is fixedly connected with a protection block, the lower end of the annular plate 601 is fixedly connected with an annular baffle 603, and the lower end surface of the anti-slip block is in contact with the upper end surface of the annular baffle 603. The annular baffle 603 supports the overall structure of the auxiliary energy increasing assembly 4 through the protection block, effectively improves the stability of the auxiliary energy increasing assembly 4, reduces the gravity abrasion, and prolongs the service life of the auxiliary energy increasing assembly 4.
Referring to fig. 9, the reset assembly 5 includes an arc-shaped box 501, the upper end of the baffle 2 is fixedly connected with the arc-shaped box 501, an arc-shaped guide rod 502 is fixedly connected in the arc-shaped box 501, the outer end of the arc-shaped guide rod 502 is slidably connected with a reset slider 503, a pair of reset springs 504 is sleeved at the outer end of the arc-shaped box 501, and the two reset springs 504 are respectively located at the front and rear sides of the reset slider 503. The slider 503 that resets produces along arc guide arm 502 and removes to receive reset spring 504's deformation power restoring position, can effectively drive supplementary energization assembly 4 and produce in organism 1 and remove, make supplementary energization assembly 4 effectively assist stirring subassembly 3 to act on, increase supplementary energization assembly 4's effort.
Referring to fig. 7, a T-shaped rod 505 is fixedly connected to the lower end of the reset slider 503, a T-shaped groove 405 is formed in the upper end of the auxiliary rotating rod 401, and the lower end of the T-shaped rod 505 extends into the T-shaped groove 405 and is rotatably connected to the auxiliary rotating rod 401. Through the mutual cooperation of T type pole 505 and T type groove 405, make T type pole 505 drive supplementary bull stick 401 and produce under the effect that removes, can not influence the rotation of supplementary bull stick 401, effectively realize supplementary bull stick 401 and remove and the emergence simultaneously of rotating, improve the power of energizing blade 403 effect and mixture, improve the motion intensity of mixture.
Referring to fig. 2, a pair of feeding pipes connected to the upper end of the machine body 1 is fixedly connected to the upper end of the machine body 1, feeding control boxes 7 are fixedly installed at both left and right ends of the machine body 1, the upper ends of the feeding pipes are connected to the feeding control boxes 7, the lower ends of the feeding pipes extend to the lower side of the baffle 2, and control valves are installed at the outer ends of the feeding pipes. Through 7 control of feeding control box put in modified sandwich ball and polycarboxylic acids polymer step by step, reation kettle's use of being convenient for improves reation kettle work's degree of automation, reduces the input of manpower.
Referring to fig. 1-13, the method of use: adding a modified sandwich ball into the machine body 1 through any one feeding control box 7, starting the speed reducing motor 301, enabling the speed reducing motor 301 to drive the stirring rod 302 and the main blade 303 to rotate, enabling the main blade 303 to stir the modified sandwich ball, enabling the stirring plate 304 to rotate together, enabling the stirring inclined plane of the stirring plate 304 to rotate to be in contact with the auxiliary rotating rod 401 and drive the auxiliary rotating rod 401 to move along the arc-shaped through hole 201, enabling the auxiliary rotating rod 401 to act through a T-shaped groove 405 and a T-shaped groove 405, enabling the reset sliding block 503 to slide on the arc-shaped guide rod 502, respectively compressing and stretching two reset springs 504, enabling the rotation gear 404 to be acted by the inner gear 602 to drive the auxiliary rotating rod 401 to rotate while moving, enabling the auxiliary rotating rod 401 to drive the energy-increasing blade 403 to rotate through the auxiliary sleeve block 402, enabling the energy-increasing blade to act on the modified sandwich ball continuously 403 and increasing the moving speed of the energy-increasing blade, and then adding a polycarboxylic acid polymer into the machine body 1 through another feeding control box 7, under the action of the main blade 303 and the energizing blade 403, the modified sandwich ball and the polycarboxylic acid polymer are continuously mixed and synthesized, and the polycarboxylic acid polymer is wrapped by the modified sandwich ball.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. A preparation process of a self-lubricating spherical polycarboxylic acid high-performance water reducing agent is characterized by comprising the following steps: the method comprises the following steps:
s1, copolymerization glue preparation: the polyacrylamide gel is prepared by taking an acrylamide aqueous solution as a raw material and carrying out polymerization reaction under the action of an initiator;
s2, wrapping a sandwich: adding nano-scale calcium oxide particles into the polyacrylamide gel to wrap the nano-scale calcium oxide particles by the polyacrylamide gel;
s3, preparing a modified sandwich ball: granulating and drying the polyacrylamide gel coated with the nano-scale calcium oxide particles to prepare a modified sandwich ball for later use;
s4, esterification reaction: preparing macromolecular monomer polyethylene glycol monomethacrylate and water by using polyethylene glycol and methacrylic acid to react;
s5, polymerization reaction: macromolecular monomer polyethylene glycol monomethacrylate and water are prepared by ammonium sulfate initiation and aqueous solution polymerization to obtain a polymerization product;
s6, neutralization reaction: adding an alkali plate into the polymerization product, and reacting to obtain a polycarboxylic acid high-performance water reducing agent consisting of polycarboxylic acid polymers, wherein the main chain of the polycarboxylic acid high-performance water reducing agent is strip-shaped and carries strip-shaped branched chains;
s7, synthesis of the modified sandwich ball: the modified sandwich ball and the polycarboxylic acid polymer are subjected to synthetic reaction in a reaction kettle, the polyacrylamide gel on the outer layer of the modified sandwich ball wraps the main chain and the branched chain of the polycarboxylic acid high-performance water reducing agent, and a lubricating layer is formed on the outer side of the modified sandwich ball, so that the main chain and the branched chain of the polycarboxylic acid high-performance water reducing agent and the nano-scale calcium oxide particles are wrapped in the lubricating layer;
s8, preparation is completed: and (3) granulating and drying the polymer prepared in the reaction kettle to prepare the self-lubricating spherical polycarboxylic acid high-performance water reducing agent.
2. The preparation process of the self-lubricating spherical polycarboxylic acid high-performance water reducing agent according to claim 1, characterized in that: the synthesis method of the step S7 includes:
m1, heating the reaction kettle to 180-200 ℃ for heat preservation;
m2, putting the modified sandwich ball into the reaction kettle in advance, slowly stirring, and stirring for 15-25 min;
m3, after stirring, adding a polycarboxylic acid high-performance water reducing agent consisting of polycarboxylic acid polymers into the reaction kettle;
m4. heating the reaction kettle to 200 deg.C and 240 deg.C, and keeping the temperature;
m5. stirring for 20-30min to complete the synthesis.
3. The preparation process of the self-lubricating spherical polycarboxylic acid high-performance water reducing agent according to claim 1 or 2, characterized in that: the reaction kettle comprises a machine body (1), a stirring assembly (3) is connected in the machine body (1), a baffle (2) is fixedly connected to the upper inner wall of the machine body (1), a pair of auxiliary energy increasing assemblies (4) matched with the stirring assembly (3) are connected to the lower end of the baffle (2), the two auxiliary energy increasing assemblies (4) are respectively located on the left side and the right side of the stirring assembly (3), a pair of reset assemblies (5) matched with the auxiliary energy increasing assemblies (4) are connected to the upper end of the baffle (2), and a rotation assembly (6) matched with the auxiliary energy increasing assemblies (4) in a direction is connected to the lower end of the baffle (2);
supplementary energy components (4) are including supplementary bull stick (401), a pair of arc through-hole (201) have been seted up on baffle (2), sliding connection has supplementary bull stick (401) in arc through-hole (201), rotation subassembly (6) are including annular plate (601), baffle (2) lower extreme fixedly connected with annular plate (601), a plurality of interior teeth of a cogwheel (602) that are the circumference and distribute of annular plate (601) inner fixedly connected with, supplementary bull stick (401) outer end fixedly connected with interior teeth of a cogwheel (602) meshing rotation gear (404) of being connected.
4. The preparation process of the self-lubricating spherical polycarboxylic acid high-performance water reducing agent according to claim 3, characterized in that: stirring subassembly (3) is including gear motor (301), organism (1) upper end fixed mounting has gear motor (301), gear motor (301) output end fixedly connected with puddler (302), puddler (302) lower extreme extends to in organism (1), puddler (302) lower extreme extends to the downside of baffle (2) to rotate with baffle (2) and be connected, a plurality of main blade (303) of puddler (302) lower extreme fixedly connected with.
5. The preparation process of the self-lubricating spherical polycarboxylic acid high-performance water reducing agent according to claim 4, characterized in that: the outer end of the stirring rod (302) is fixedly connected with a toggle plate (304), and toggle inclined planes matched with the auxiliary rotating rod (401) are arranged at the left end and the right end of the toggle plate (304).
6. The preparation process of the self-lubricating spherical polycarboxylic acid high-performance water reducing agent according to claim 3, characterized in that: the lower end of the auxiliary rotating rod (401) extends to the lower side of the annular plate (601), the lower end of the auxiliary rotating rod (401) is fixedly connected with a plurality of auxiliary sleeve blocks (402), and the outer end of each auxiliary sleeve block (402) is fixedly connected with a plurality of energy-increasing blades (403).
7. The preparation process of the self-lubricating spherical polycarboxylic acid high-performance water reducing agent according to claim 3, characterized in that: the lower end of the rotation gear (404) is fixedly connected with a protection block, the lower end of the annular plate (601) is fixedly connected with an annular baffle plate (603), and the lower end face of the anti-slip block is in contact with the upper end face of the annular baffle plate (603).
8. The preparation process of the self-lubricating spherical polycarboxylic acid high-performance water reducing agent according to claim 3, characterized in that: reset assembly (5) including arc box body (501), baffle (2) upper end fixedly connected with arc box body (501), fixedly connected with arc guide arm (502) in arc box body (501), arc guide arm (502) outer end sliding connection has slider (503) that resets, arc box body (501) outer end cover is equipped with a pair of reset spring (504), two reset spring (504) are located both sides around slider (503) that resets respectively.
9. The preparation process of the self-lubricating spherical polycarboxylic acid high-performance water reducing agent according to claim 8, characterized in that: the utility model discloses a T type groove (405) is seted up to supplementary bull stick (401), and T type groove (405) has been seted up to slider (503) lower extreme fixedly connected with T type pole (505) that resets, T type pole (505) lower extreme extends to in T type groove (405) to rotate with supplementary bull stick (401) and be connected.
10. The preparation process of the self-lubricating spherical polycarboxylic acid high-performance water reducing agent according to claim 3, characterized in that: organism (1) upper end fixedly connected with a pair of inlet pipe rather than putting through mutually, the equal fixed mounting in both ends has feeding control box (7) about organism (1), the inlet pipe upper end is put through mutually with feeding control box (7), the inlet pipe lower extreme extends to baffle (2) downside, control flap is installed to the inlet pipe outer end.
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