CN117341057A - Preparation method of aerated concrete block for lacing wire construction - Google Patents

Preparation method of aerated concrete block for lacing wire construction Download PDF

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Publication number
CN117341057A
CN117341057A CN202311459846.7A CN202311459846A CN117341057A CN 117341057 A CN117341057 A CN 117341057A CN 202311459846 A CN202311459846 A CN 202311459846A CN 117341057 A CN117341057 A CN 117341057A
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aerated concrete
concrete block
peeling
grooving
slotting
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CN202311459846.7A
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CN117341057B (en
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张建营
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Ningbo Tengna Materials Co ltd
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Ningbo Tengna Materials Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28CPREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10Mixing in containers not actuated to effect the mixing
    • B28C5/12Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/12Apparatus or processes for treating or working the shaped or preshaped articles for removing parts of the articles by cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/245Curing concrete articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28CPREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/46Arrangements for applying super- or sub-atmospheric pressure during mixing; Arrangements for cooling or heating during mixing, e.g. by introducing vapour
    • B28C5/466Heating, e.g. using steam
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

The application relates to the technical field of aerated concrete blocks, in particular to a preparation method of an aerated concrete block for lacing wire construction. The preparation method of the aerated concrete block for lacing wire construction comprises the following steps: s1, mixing and stirring raw materials of the aerated concrete block and water to obtain mixed raw slurry; s2, introducing steam into the mixed raw slurry and heating to obtain steam mixed slurry; s3, injecting the steam mixed slurry into the parked mould basket, and vibrating to obtain an aerated concrete blank; s4, performing gas generation static stop demoulding and cutting on the aerated concrete raw blank to obtain an aerated concrete block semi-finished product; s5, turning over, peeling and grooving the aerated concrete block semi-finished product, and then autoclaved curing to obtain the aerated concrete block. The aerated concrete block prepared by the aerated concrete block preparation method for lacing wire construction has excellent mechanical property and grass inhibition performance.

Description

Preparation method of aerated concrete block for lacing wire construction
Technical Field
The application relates to the technical field of aerated concrete blocks, in particular to a preparation method of an aerated concrete block for lacing wire construction.
Background
The aerated concrete block is a porous concrete product which is prepared from lime, cement, slag and the like serving as main raw materials through the processes of proportioning and stirring, pouring, standing, cutting, high-pressure steam curing and the like. The aerated concrete block has the advantages of light weight, sound insulation, heat preservation, earthquake resistance and the like, and becomes a novel environment-friendly building enclosure material which is widely popularized in China.
However, because a large number of tiny gaps exist in the aerated concrete block, the gaps are easy to absorb water in a humid environment, and meanwhile, the gaps are easy to retain weed seeds, so that the aerated concrete block is easy to generate weed breeding, the weed breeding easily causes cracking of the aerated concrete block, and the mechanical strength of the aerated concrete block is further affected.
Disclosure of Invention
In order to improve the defect that the aerated concrete block is easy to breed weeds so as to influence the mechanical strength of the aerated concrete block, the application provides a preparation method of the aerated concrete block for lacing wire construction.
The application provides a preparation method of an aerated concrete block for lacing wire construction, which adopts the following technical scheme:
the preparation method of the aerated concrete block for lacing wire construction comprises the following steps:
s1, mixing and stirring raw materials of an aerated concrete block with water for 8min to obtain mixed raw slurry, wherein the raw materials of the aerated concrete block contain sulfonylurea weeding-adhesive;
s2, introducing steam into the mixed raw slurry, heating for 1min, and obtaining steam mixed slurry, wherein the steam temperature is 100 ℃;
s3, injecting the steam mixed slurry into the parked mould basket through a pouring stirrer, and continuously vibrating to remove air in the steam mixed slurry to obtain an aerated concrete blank;
s4, conveying the aerated concrete raw blank into a static stopping chamber for gas generation and static stopping, wherein the temperature of the static stopping chamber is 50-60 ℃, the gas generation and static stopping time is 120-150min, and finally demoulding and cutting to obtain an aerated concrete block semi-finished product;
s5, turning over the aerated concrete block semi-finished product, peeling and grooving the bottom surface, and then conveying the grooved semi-finished product into an autoclave for autoclaved curing, wherein the autoclaved curing pressure is 1.25-1.3MPa, the temperature is 185-195 ℃, and the steam curing time is 400-500min, so that the aerated concrete block is obtained.
Preferably, the aerated concrete block comprises the following raw materials in parts by weight: 40-50 parts of iron sand, 5-10 parts of machine-made sand, 10-15 parts of power plant slag, 5-15 parts of mineral separation tail mud, 1-3 parts of cement reclaimed materials, 5-15 parts of lime, 10-20 parts of cement and 5-10 parts of sulfonylurea weeding-adhesive.
Preferably, the sulfonylurea weeding-adhesive comprises the following raw materials in parts by weight: 10-25 parts of isocyanate composition, 20-30 parts of carboxyl acrylic resin, 1-6 parts of chain extender-glutaric anhydride and 0.02-0.2 part of catalyst-dibutyl tin dilaurate;
the isocyanate composition is a mixture of isophorone diisocyanate, n-butyl isocyanate, o-ethoxycarbonyl benzene sulfonamide and sodium isethionate.
Preferably, the method for preparing the isocyanate composition comprises the following steps:
a1, adding o-ethoxycarbonyl benzene sulfonamide and n-butyl isocyanate into a xylene solvent, then mixing and stirring for 30min at the temperature of 130 ℃, then introducing phosgene for reaction for 3h, then discharging phosgene for 1.5h through nitrogen, and finally distilling and recovering to obtain o-ethoxycarbonyl benzene sulfonyl isocyanate;
a2, mixing o-ethoxycarbonyl benzenesulfonyl isocyanate and isophorone diisocyanate, then adding 3-methyl-1-phenylphosphine cyclopentene-1-oxide, simultaneously introducing nitrogen, adding to 60 ℃, reacting for 3 hours, then adding 1-methyl-2-pyrrolidone, dibutyl tin dilaurate and sodium hydroxyethyl sulfonate, and finally reacting for 2 hours at the temperature of 90 ℃ to obtain the isocyanate composition.
Preferably, the preparation method of the sulfonylurea weeding-adhesive comprises the following steps: firstly, mixing carboxyl acrylic resin and isocyanate composition at 80 ℃, then cooling to 50 ℃, adding chain extender-glutaric anhydride and catalyst-dibutyl tin dilaurate, and reacting for 3 hours, and finally obtaining sulfonylurea weeding-adhesive.
O-ethoxycarbonylbenzenesulfonyl isocyanate belongs to a sulfonylurea herbicide, and the weeding mechanism is that the weeding effect is realized by inhibiting the growth and metabolism of plants. When the o-ethoxycarbonylbenzenesulfonyl isocyanate contacts the leaves or roots of plants, it enters the plants and is converted into an active compound, thereby inhibiting photosynthesis of plants, interfering with amino acid formation, interfering with DNA synthesis, and thus inhibiting weed production.
When the o-ethoxycarbonyl benzenesulfonyl isocyanate, isophorone diisocyanate, 3-methyl-1-phenylphosphine cyclopentene-1-oxide, 1-methyl-2-pyrrolidone, dibutyltin dilaurate and sodium hydroxyethyl sulfonate are mixed, the o-ethoxycarbonyl benzenesulfonyl isocyanate and isophorone diisocyanate catalyze to form carbodiimide groups, and the carbodiimide groups have excellent reactivity with carboxyl groups in carboxyl acrylic resin, so that the sulfonylurea weeding-adhesive is promoted to form a crosslinked network structure in the aerated concrete block, and the aerated concrete block has excellent weeding performance and also has better mechanical property.
Preferably, the molar ratio of isophorone diisocyanate, n-butyl isocyanate, o-ethoxycarbonyl benzene sulfonamide and sodium isethionate is (2-4): (1-3): (1-3): (2-4).
When isophorone diisocyanate, n-butyl isocyanate, o-ethoxycarbonyl benzene sulfonamide and sodium isethionate are used in the above molar ratio, the prepared aerated concrete block has better weed growth inhibition performance and mechanical property.
Preferably, in the peeling and slotting operation of S5, slotting and peeling are performed simultaneously; the specification of the aerated concrete block is 600mm multiplied by 200mm, the slotting position is positioned in the middle of the aerated concrete block, the slotting direction is the length direction of the aerated concrete, the slotting depth is 6mm, and the width is 6mm;
the peeling and grooving operation is carried out by a peeling and grooving cutter, the peeling and grooving cutter comprises a peeling frame, a grooving steel plate and a plurality of grooving cutters, the grooving steel plate is fixedly connected to the peeling frame, the specification of the grooving steel plate is 6000mm multiplied by 5mm multiplied by 20mm, and scales are arranged on the grooving steel plate; the slotting cutter is a bolt with one end processed into a blade, the length of the blade is 6mm, the width of the blade is 6mm, the thickness of the blade is 1mm, and ten slotting cutters are in threaded connection with the slotting steel plate.
Because thirty slotting cutters are arranged on the slotting steel plate, the peeling slotting cutter can peel and slotting operations on thirty columns of aerated concrete blocks, and the peeling slotting efficiency is effectively improved. Moreover, because the scales are arranged on the grooving steel plate, when the grooving operation is carried out, a worker can more simply, conveniently and quickly determine the grooving position, and the success rate of grooving the aerated concrete block is improved.
Preferably, the overturning, peeling and slotting operation of S5 is performed by a peeling and slotting machine;
the peeling grooving machine comprises a base, a turnover assembly, a peeling grooving cutter, a storage box and a driving assembly, wherein the turnover assembly comprises a driving motor, a connecting column and a loading plate, the driving motor is fixedly connected to the base, the connecting column is fixedly connected to the output end of the driving motor, the loading plate is fixedly connected to the peripheral surface of the connecting column, the loading plate is used for bearing an aerated concrete block semi-finished product, the storage box is detachably connected to the loading plate, the storage box is used for covering the aerated concrete block semi-finished product, and the driving motor turns over the storage box through the loading plate;
the driving assembly comprises a driving air cylinder and a pushing plate fixedly connected to a piston rod of the driving air cylinder, and the driving air cylinder drives the storage box to slide through the pushing plate; the side wall of the storage box is provided with a cutting groove in a penetrating mode, the peeling slotting cutter is fixedly connected to the end face of the loading plate, and sliding of the storage box forces the peeling slotting cutter to peel and slotting operation on the aerated concrete block semi-finished product.
When the peeling and slotting operation is required to be carried out on the aerated concrete block semi-finished product, a worker can cover the storage box on the loading plate first, then the driving motor is started, the driving motor drives the connecting column to rotate, the connecting column drives the loading plate to rotate, and then the overturning operation of the aerated concrete block is completed. And then the air cylinder is driven to drive the pushing plate to move, so that the storage box is gradually far away from the loading plate, and the peeling slotting cutter is fixedly connected to the end part of the loading plate, so that the peeling slotting cutter can perform peeling slotting operation on the aerated concrete block semi-finished product along with the movement of the storage box, and the peeling slotting operation effect on the aerated concrete block is effectively improved.
Preferably, the pushing plate is provided with an inclined ramp, a glove box is arranged on one side of the base, and the inclined ramp gradually inclines towards the glove box in a direction away from the cutting groove.
After peeling and slotting are carried out on the aerated concrete block semi-finished product, sundries can directly fall to the inclined ramp, and then the inclined ramp can transfer the sundries, so that peeling and slotting operation of the aerated concrete block is indirectly improved.
Preferably, the storage box comprises a box body and a plurality of limiting parts arranged on the box body, wherein each limiting part comprises a limiting block, a compression spring and a limiting shaft, a containing groove is formed in the inner wall of the storage box, the compression spring is contained in the containing groove, the limiting block slides back and forth in the containing groove, a sliding groove is formed in the outer wall of the limiting block, a through hole is formed in the bottom of the sliding groove in a penetrating mode, and the compression spring and the through hole are sequentially penetrated through the limiting shafts; the end part of the limiting shaft is fixedly connected with a limiting nut, and the limiting nut slides back and forth in the sliding groove.
When the storage box is required to be fixed on the loading plate, a worker can slide the limiting block into the accommodating groove firstly, then cover the storage box on the loading plate, and then the limiting block can be forced to extend outwards by the compression spring only by contacting with the limiting of the limiting block, so that the locking operation of the storage box and the loading plate is completed.
In summary, the present application has the following beneficial effects:
1. o-ethoxycarbonylbenzenesulfonyl isocyanate belongs to a sulfonylurea herbicide, and the weeding mechanism is that the weeding effect is realized by inhibiting the growth and metabolism of plants. When the o-ethoxycarbonylbenzenesulfonyl isocyanate contacts plant leaves or roots, it enters the plant body and is converted into an active compound, thereby inhibiting plant photosynthesis, interfering with amino acid formation, interfering with DNA synthesis, and thus inhibiting weed production;
2. when the o-ethoxycarbonylbenzenesulfonyl isocyanate, isophorone diisocyanate, 3-methyl-1-phenylphosphine cyclopentene-1-oxide, 1-methyl-2-pyrrolidone, dibutyltin dilaurate and sodium isethionate are mixed, the o-ethoxycarbonylbenzenesulfonyl isocyanate and isophorone diisocyanate catalyze to form carbodiimide groups, and the carbodiimide groups have excellent reactivity with carboxyl groups in carboxyl acrylic resin, so that the sulfonylurea weeding-adhesive is promoted to form a crosslinked network structure in the aerated concrete block, and the aerated concrete block has excellent weeding performance and better mechanical property.
3. When the peeling and slotting operation is required to be carried out on the aerated concrete block semi-finished product, a worker can cover the storage box on the loading plate first, then the driving motor is started, the driving motor drives the connecting column to rotate, the connecting column drives the loading plate to rotate, and then the overturning operation of the aerated concrete block is completed. And then the air cylinder is driven to drive the pushing plate to move, so that the storage box is gradually far away from the loading plate, and the peeling slotting cutter is fixedly connected to the end part of the loading plate, so that the peeling slotting cutter can perform peeling slotting operation on the aerated concrete block semi-finished product along with the movement of the storage box, and the peeling slotting operation effect on the aerated concrete block is effectively improved.
Drawings
Fig. 1 is a schematic view of the construction of a skinning groover when loading an aerated concrete block half-product;
fig. 2 is a schematic view of the structure of the skinning groover when turning over the half-finished aerated concrete block;
FIG. 3 is a schematic view of the skinning groover skinning aerated concrete block half product;
FIG. 4 is a schematic structural view of a peeling and slotting cutter;
fig. 5 is an exploded view of the stopper.
Reference numerals: 1. a base; 2. a flip assembly; 3. peeling and grooving cutters; 4. a storage box; 5. a drive assembly; 21. a driving motor; 22. a connecting column; 23. a loading plate; 31. peeling the frame; 32. a slotted steel plate; 33. grooving cutter; 41. cutting a groove; 42. an inclined ramp; 43. a case; 44. a limiting piece; 45. a receiving groove; 51. a driving cylinder; 52. a pushing plate; 441. a limiting block; 442. a compression spring; 443. a limiting shaft; 444. a chute; 445. a through hole; 446. a limit nut; 447. a guide surface.
Detailed Description
The present application will be described in further detail with reference to fig. 1 to 5, examples 1 to 7, and comparative examples 1 to 4.
Raw materials
The ground iron sand, the machine-made sand, the slag of the power plant, the mine tailing, the cement reclaimed material, the cement and the lime are all commercially available; isophorone diisocyanate CAS:4098-71-9; n-butyl isocyanate CAS:111-36-4; o-ethoxycarbonylbenzenesulfonamide CAS:2026-37-1; sodium isethionate CAS:1562-00-1; carboxyl acrylic resin Woker VOK-FS-2460A; glutaric anhydride CAS:108-55-4; dibutyl tin dilaurate CAS:77-58-7; xylene CAS:1330-20-7; 3-methyl-1-phenylphosphine cyclopentene-1-oxide CAS:707-61-9; 1-methyl-2-pyrrolidone CAS:872-50-4.
Examples
Example 1
The preparation method of the aerated concrete block for lacing wire construction comprises the following steps:
s1, crushing raw materials of an aerated concrete block to 500 meshes, and then mixing and stirring the raw materials with water according to a powder-water ratio of 1:1 for 8min to obtain mixed raw slurry, wherein the raw materials of the aerated concrete block contain sulfonylurea weeding-adhesive;
wherein, the aerated concrete block comprises the following raw materials by mass: 44kg of iron sand, 6kg of machine-made sand, 13kg of power plant slag, 10kg of mineral separation tail mud, 2kg of cement reclaimed materials, 10kg of lime, 15kg of cement and 8kg of sulfonylurea weeding-adhesive.
The sulfonylurea weeding-adhesive comprises the following raw materials by mass: 17kg of isocyanate composition, 25kg of carboxylic acrylic resin, 3.5kg of chain extender-glutaric anhydride and 0.1kg of catalyst-dibutyltin dilaurate;
the preparation method of the sulfonylurea weeding-adhesive comprises the following steps: firstly, mixing carboxyl acrylic resin and isocyanate composition at 80 ℃, then cooling to 50 ℃, adding chain extender-glutaric anhydride and catalyst-dibutyl tin dilaurate, and reacting for 3 hours, and finally obtaining sulfonylurea weeding-adhesive.
The isocyanate composition is a mixture of isophorone diisocyanate, n-butyl isocyanate, o-ethoxycarbonyl benzene sulfonamide and sodium isethionate, and the molar ratio of isophorone diisocyanate, n-butyl isocyanate, o-ethoxycarbonyl benzene sulfonamide and sodium isethionate is 3:2:2:3, a step of;
the preparation method of the isocyanate composition comprises the following steps:
a1, adding 2mol of o-ethoxycarbonyl benzenesulfonamide and 2mol of n-butyl isocyanate into 2L of xylene solution, mixing and stirring for 30min at 130 ℃, then introducing phosgene to react for 3h, discharging phosgene for 1.5h through nitrogen, and finally distilling and recovering to obtain o-ethoxycarbonyl benzenesulfonyl isocyanate;
a2, mixing o-ethoxycarbonyl benzenesulfonyl isocyanate and 3mol of isophorone diisocyanate, then adding 0.5mol of 3-methyl-1-phenylphosphine cyclopentene-1-oxide, simultaneously introducing nitrogen, adding to 60 ℃, then reacting for 3 hours, then adding 0.2mol of 1-methyl-2-pyrrolidone, 0.15mol of dibutyltin dilaurate and 3mol of sodium hydroxyethyl sulfonate, and finally reacting for 2 hours at a temperature of 90 ℃ to obtain an isocyanate composition;
s2, introducing steam into the mixed raw slurry, heating for 1min, and obtaining steam mixed slurry, wherein the steam temperature is 100 ℃;
s3, injecting the steam mixed slurry into the parked mould basket through a pouring stirrer, and continuously vibrating to remove air in the steam mixed slurry to obtain an aerated concrete blank;
s4, conveying the aerated concrete raw blank into a static stopping chamber for gas generation and static stopping, wherein the temperature of the static stopping chamber is 55 ℃, the gas generation and static stopping time is 130min, and finally demoulding and cutting to obtain an aerated concrete block semi-finished product;
s5, turning over the semi-finished product of the aerated concrete block, peeling and grooving the bottom surface, and then conveying the grooved semi-finished product into an autoclave for autoclaved curing, wherein the autoclaved curing pressure is 1.27MPa, the temperature is 190 ℃, and the steam curing time is 450min, so that the aerated concrete block is obtained;
wherein slotting and peeling are performed simultaneously; the specification of the aerated concrete block is 600mm multiplied by 200mm, the slotting position is positioned in the middle of the aerated concrete block, the slotting direction is the length direction of the aerated concrete, the slotting depth is 6mm, and the width is 6mm; the turning peeling grooving operation is performed by a peeling grooving machine.
Referring to fig. 1-2, the peeling and grooving machine includes a base 1, a turnover assembly 2, a peeling and grooving cutter 3, a storage box 4, and a driving assembly 5, the turnover assembly 2 includes a driving motor 21, a connecting column 22, and a loading plate 23, the driving motor 21 is fixedly connected to an upper end surface of the base 1, the connecting column 22 is fixedly connected to an output end of the driving motor 21, the loading plate 23 is fixedly connected to an outer peripheral surface of the connecting column 22, and the storage box 4 is detachably connected to the loading plate 23 and covers aerated concrete blocks.
When the aerated concrete block needs to be overturned, a worker can cover the storage box 4 on the loading plate 23, then start the driving motor 21, the driving motor 21 drives the connecting column 22 to rotate, and the connecting column 22 drives the loading plate 23 to rotate, at the moment, the aerated concrete block is transferred into the storage box 4 and overturned, and then the overturning operation of the aerated concrete block is completed.
Referring to fig. 2 and 3, the driving assembly 5 includes a driving cylinder 51 and a pushing plate 52 fixedly connected to a piston rod of the driving motor 21, the peeling and slotting cutter 3 is fixedly connected to an end of the loading plate 23, a cutting groove 41 is formed in a side wall of the storage box 4 in a penetrating manner, and the peeling and slotting cutter 3 moves reciprocally through the cutting groove 41.
When the peeling and slotting operation is required to be performed on the aerated concrete block, the driving air cylinder 51 is started to drive the pushing plate 52 to move, at this time, the pushing plate 52 drives the storage box 4 to be gradually far away from the loading plate 23, and the peeling and slotting cutter 3 is fixedly connected to the end part of the loading plate 23, so that the peeling and slotting operation can be performed on the aerated concrete block semi-finished product along with the movement of the storage box 4 by the peeling and slotting cutter 3.
In order to reduce the influence of sundries generated by peeling and slotting on the peeling and slotting machine, the pushing plate 52 is fixedly connected with the inclined ramp 42, a sundry box is arranged on one side of the base 1, and the inclined ramp 42 gradually inclines towards the sundry box in a direction away from the cutting slot 41, so that sundries are promoted to be transferred into the sundry box along with the inclined ramp 42.
Referring to fig. 4, the peeling and slotting cutter 3 includes a peeling frame 31, a slotting steel plate 32, and ten slotting cutters 33, wherein the slotting steel plate 32 is fixedly connected to the peeling frame 31, and scales are arranged on the slotting steel plate 32; the slotting cutter 33 is a bolt with one end processed into a blade, the length of the blade is 6mm, the width of the blade is 6mm, the thickness of the blade is 1mm, and ten slotting cutters 33 are connected to the slotting steel plate 32 in a threaded mode.
Referring to fig. 5, the storage case 4 includes a case 43 and four limiting members 44 disposed on an inner wall of the case 43, the limiting members 44 include a limiting member 441, a compression spring 442 and a limiting shaft 443, the inner wall of the storage case 4 is provided with a receiving groove 45, the compression spring 442 is received in the receiving groove 45, and the limiting member 441 slides back and forth in the receiving groove 45. The outer wall of the limiting block 441 is provided with a sliding groove 444, the bottom of the sliding groove 444 is provided with a through hole 445 in a penetrating mode, the limiting shaft 443 is provided with a compression spring 442 and the through hole 445 in a penetrating mode, the end portion of the limiting shaft 443 is fixedly connected with a limiting nut 446, and the limiting nut 446 slides in the sliding groove 444 in a reciprocating mode.
When the storage case 4 needs to be fixed on the loading plate 23, a worker can first slide the limiting block 441 into the accommodating groove 45, then cover the storage case 4 on the loading plate 23, and then only contact the limitation of the limiting block 441, the compression spring 442 can force the limiting block 441 to extend outwards, so that the locking operation of the storage case 4 and the loading plate 23 is completed.
It should be noted that, in order to facilitate the installation of the storage case 4, the side wall of the limiting block 441 is provided with a guiding surface 447, and gradually approaches the chute 444 in a direction in which the item is away from the compression spring 442. In addition, in this embodiment, the above-mentioned fixed connection may be a conventional fixed connection manner such as welded connection, threaded connection, bolt connection, etc. according to actual selection.
Examples 2 to 3
The difference from example 1 is that the addition amounts of the raw material components of the aerated concrete block are different, as shown in table 1.
Table 1 the raw material component addition amount/kg of aerated concrete block of examples 1-3
Example 1 Example 2 Example 3
Ground iron sand 44 50 40
Machine-made sand 6 5 10
Slag of power plant 13 10 15
Mineral dressing tail mud 10 15 10
Cement reclaimed material 2 1 3
Lime 10 5 15
Cement and its preparation method 15 20 10
Sulfonylurea herbicide-adhesive 8 10 5
Examples 4 to 5
The difference from example 1 is that the addition amounts of the respective components of the sulfonylurea type herbicidal-adhesive are different, as shown in Table 2.
TABLE 2 Sulfonylurea herbicidal-adhesive Each component addition amount per kg in example 1, examples 4 to 5
Example 1 Example 4 Example 5
Isocyanate composition 17 10 25
Carboxyl acrylic resin 25 30 20
Pentane dicarboxylic anhydride 3.5 1 6
Dibutyl tin dilaurate 0.1 0.2 0.02
Examples 6 to 7
The difference from example 1 is that the molar ratios of the components of the isocyanate composition are different, as shown in Table 3.
TABLE 3 molar ratios of the components of the isocyanate compositions of example 1, examples 6-7
Example 1 Example 6 Example 7
Isophorone diisocyanate 3 2 4
N-butyl isocyanate 2 1 3
O-ethoxycarbonyl benzene sulfonamide 2 3 1
Sodium isethionate 3 4 2
Comparative example
Comparative example 1
The difference from example 1 is that sulfonylurea herbicide-binders are no longer added to the aerated concrete block.
Comparative example 2
The difference from example 1 is that n-butyl isocyanate and o-ethoxycarbonyl benzenesulfonamide are no longer added to the isocyanate composition.
Comparative example 3
The difference from example 1 is that the sulfonylurea herbicide-adhesive is directly replaced by o-ethoxycarbonylbenzenesulfonyl isocyanate.
Comparative example 4
The difference from example 1 is that the isocyanate composition is a simple mixture of isophorone diisocyanate, n-butyl isocyanate, o-ethoxycarbonyl benzenesulfonamide and sodium isethionate.
Performance test
Detection method
1. Compression resistance test
Three samples of aerated concrete blocks were taken from examples 1-7 and comparative examples 1-4, respectively, and then tested with reference to the compressive property test in the autoclaved aerated concrete Performance test method of GB/T11969-2020, and finally compressive strengths were obtained and averaged.
2. Grass inhibition performance test
Three hundred aerated concrete block samples are taken out from examples 1-7 and comparative examples 1-4 respectively, dandelion grass seeds are evenly spread on the surfaces of the samples, then water is sprayed and the samples are kept stand for 10 days, and finally germination conditions of the dandelion grass seeds in each example or comparative example are observed, and grass inhibition rate is calculated.
The test results are shown in Table 4.
TABLE 4 Table of the results of the measurements of examples 1-7 and comparative examples 1-4
Referring to example 1 and comparative examples 1-4 in combination with table 4, it can be seen that the compressive strength and the weed suppression rate of example 1 are both significantly improved compared with comparative example 1, thus demonstrating that the addition of the sulfonylurea weeding-adhesive can effectively enhance the mechanical strength and the weed suppression performance of the aerated concrete block.
Compared with comparative example 1, the compressive strength of comparative example 2 is obviously improved, and the grass inhibition rate of comparative example 3 is obviously improved, so that the addition of n-butyl isocyanate and o-ethoxycarbonyl benzene sulfonamide in the sulfonylurea weeding-adhesive can effectively increase the grass inhibition performance of the aerated concrete block, and the other parts can enhance the mechanical properties of the aerated concrete block.
Compared with the example 1, the compressive strength and the grass inhibition rate of the comparative example 4 are relatively low, so that the preparation method of the isocyanate composition in the example 1 can promote the crosslinking of all the components, and the mechanical property and the grass inhibition effect of the aerated concrete block are effectively improved.
Referring to examples 1 to 7 in combination with Table 4, it can be seen that in examples 1 to 7, example 1 has both excellent compressive strength and grass inhibiting performance, and therefore, the proportion of the components of the aerated concrete block according to example 1 is relatively better.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims (10)

1. The preparation method of the aerated concrete block for lacing wire construction is characterized by comprising the following steps of:
s1, mixing and stirring raw materials of an aerated concrete block with water for 8min to obtain mixed raw slurry, wherein the raw materials of the aerated concrete block contain sulfonylurea weeding-adhesive;
s2, introducing steam into the mixed raw slurry, heating for 1min, and obtaining steam mixed slurry, wherein the steam temperature is 100 ℃;
s3, injecting the steam mixed slurry into the parked mould basket through a pouring stirrer, and continuously vibrating to remove air in the steam mixed slurry to obtain an aerated concrete blank;
s4, conveying the aerated concrete raw blank into a static stopping chamber for gas generation and static stopping, wherein the temperature of the static stopping chamber is 50-60 ℃, the gas generation and static stopping time is 120-150min, and finally demoulding and cutting to obtain an aerated concrete block semi-finished product;
s5, turning over the aerated concrete block semi-finished product, peeling and grooving the bottom surface, and then conveying the grooved semi-finished product into an autoclave for autoclaved curing, wherein the autoclaved curing pressure is 1.25-1.3MPa, the temperature is 185-195 ℃, and the steam curing time is 400-500min, so that the aerated concrete block is obtained.
2. The method for preparing an aerated concrete block for lacing wire construction according to claim 1, wherein the aerated concrete block comprises the following raw materials in parts by weight: 40-50 parts of iron sand, 5-10 parts of machine-made sand, 10-15 parts of power plant slag, 5-15 parts of mineral separation tail mud, 1-3 parts of cement reclaimed materials, 5-15 parts of lime, 10-20 parts of cement and 5-10 parts of sulfonylurea weeding-adhesive.
3. The method for preparing the aerated concrete block for lacing wire construction according to claim 2, wherein the sulfonylurea weeding-adhesive comprises the following raw materials in parts by weight: 10-25 parts of isocyanate composition, 20-30 parts of carboxyl acrylic resin, 1-6 parts of chain extender-glutaric anhydride and 0.02-0.2 part of catalyst-dibutyl tin dilaurate;
the isocyanate composition is a mixture of isophorone diisocyanate, n-butyl isocyanate, o-ethoxycarbonyl benzene sulfonamide and sodium isethionate.
4. A method of preparing an aerated concrete block for lacing wire construction according to claim 3, wherein the method of preparing the isocyanate composition comprises the steps of:
a1, adding o-ethoxycarbonyl benzene sulfonamide and n-butyl isocyanate into a xylene solvent, then mixing and stirring for 30min at the temperature of 130 ℃, then introducing phosgene for reaction for 3h, then discharging phosgene for 1.5h through nitrogen, and finally distilling and recovering to obtain o-ethoxycarbonyl benzene sulfonyl isocyanate;
a2, mixing o-ethoxycarbonyl benzenesulfonyl isocyanate and isophorone diisocyanate, then adding 3-methyl-1-phenylphosphine cyclopentene-1-oxide, simultaneously introducing nitrogen, adding to 60 ℃, reacting for 3 hours, then adding 1-methyl-2-pyrrolidone, dibutyl tin dilaurate and sodium hydroxyethyl sulfonate, and finally reacting for 2 hours at the temperature of 90 ℃ to obtain the isocyanate composition.
5. The method for preparing an aerated concrete block for lacing wire construction according to claim 3, wherein the sulfonylurea weeding-adhesive is prepared by the following steps: firstly, mixing carboxyl acrylic resin and isocyanate composition at 80 ℃, then cooling to 50 ℃, adding chain extender-glutaric anhydride and catalyst-dibutyl tin dilaurate, and reacting for 3 hours, and finally obtaining sulfonylurea weeding-adhesive.
6. The method for producing an aerated concrete block for lacing wire construction according to claim 3, wherein: the molar ratio of isophorone diisocyanate to n-butyl isocyanate to o-ethoxycarbonyl benzene sulfonamide to sodium isethionate is (2-4): (1-3): (1-3): (2-4).
7. The method for producing aerated concrete blocks for lacing wire construction according to claim 1, wherein in the skinning and grooving operation of S5, grooving and skinning are performed simultaneously; the specification of the aerated concrete block is 600mm multiplied by 200mm, the slotting position is positioned in the middle of the aerated concrete block, the slotting direction is the length direction of the aerated concrete, the slotting depth is 6mm, and the width is 6mm;
the peeling and grooving operation is performed by a peeling and grooving cutter (3), the peeling and grooving cutter (3) comprises a peeling frame (31), a grooving steel plate (32) and a plurality of grooving cutters (33), the grooving steel plate (32) is fixedly connected to the peeling frame (31), and scales are arranged on the grooving steel plate (32); the slotting cutter (33) is a bolt with one end processed into a blade, the length of the blade is 6mm, the width of the blade is 6mm, the thickness of the blade is 1mm, and the slotting cutters (33) are in threaded connection with the slotting steel plate (32).
8. The method for producing aerated concrete blocks for lacing wire construction according to claim 7, wherein: s5, turning, peeling and grooving operations are carried out through a peeling and grooving machine;
the peeling grooving machine comprises a base (1), a turnover assembly (2), a peeling grooving cutter (3), a storage box (4) and a driving assembly (5), wherein the turnover assembly (2) comprises a driving motor (21), a connecting column (22) and a loading plate (23), the driving motor (21) is fixedly connected to the base (1), the connecting column (22) is fixedly connected to the output end of the driving motor (21), the loading plate (23) is fixedly connected to the outer peripheral surface of the connecting column (22), the loading plate (23) is used for bearing an aerated concrete block semi-finished product, the storage box (4) is detachably connected to the loading plate (23), the storage box (4) is used for covering the aerated concrete block semi-finished product, and the driving motor (21) is used for overturning the storage box (4) through the loading plate (23).
The driving assembly (5) comprises a driving air cylinder (51) and a pushing plate (52) fixedly connected to a piston rod of the driving air cylinder (51), and the driving air cylinder (51) drives the storage box (4) to slide through the pushing plate (52); the side wall of the storage box (4) is provided with a cutting groove (41) in a penetrating mode, the peeling slotting cutter (3) is fixedly connected to the end face of the loading plate (23), and the peeling slotting cutter (3) is forced to peel and slotting operation on the aerated concrete block semi-finished product by sliding of the storage box (4).
9. The method for producing aerated concrete blocks for lacing wire construction according to claim 8, wherein: the pushing plate (52) is provided with an inclined ramp (42), one side of the base (1) is provided with a glove box, and the inclined ramp (42) gradually inclines towards the glove box in a direction away from the cutting groove (41).
10. The method for producing aerated concrete blocks for lacing wire construction according to claim 8, wherein: the storage box (4) comprises a box body (43) and a plurality of limiting pieces (44) arranged on the box body (43), wherein each limiting piece (44) comprises a limiting block (441), a compression spring (442) and a limiting shaft (443), a containing groove (45) is formed in the inner wall of the storage box (4), the compression spring (442) is contained in the containing groove (45), the limiting blocks (441) slide in the containing groove (45) in a reciprocating manner, sliding grooves (444) are formed in the outer walls of the limiting blocks (441), through holes (445) are formed in the bottoms of the sliding grooves (444) in a penetrating mode, and the compression springs (442) and the through holes (445) are sequentially formed in the limiting shafts (443) in a penetrating mode; and the end part of the limiting shaft (443) is fixedly connected with a limiting nut (446), and the limiting nut (446) slides in the sliding groove (444) in a reciprocating manner.
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