CN117070139A - Low-temperature rapid-curing polyurea coating and curing device thereof - Google Patents
Low-temperature rapid-curing polyurea coating and curing device thereof Download PDFInfo
- Publication number
- CN117070139A CN117070139A CN202311044644.6A CN202311044644A CN117070139A CN 117070139 A CN117070139 A CN 117070139A CN 202311044644 A CN202311044644 A CN 202311044644A CN 117070139 A CN117070139 A CN 117070139A
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- curing
- gun body
- driving
- seat
- component
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- 238000000576 coating method Methods 0.000 title claims abstract description 66
- 239000011248 coating agent Substances 0.000 title claims abstract description 64
- 229920002396 Polyurea Polymers 0.000 title claims abstract description 32
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 24
- 229920000570 polyether Polymers 0.000 claims abstract description 24
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910000077 silane Inorganic materials 0.000 claims abstract description 16
- 229920005862 polyol Polymers 0.000 claims abstract description 11
- 150000003077 polyols Chemical class 0.000 claims abstract description 11
- 239000004970 Chain extender Substances 0.000 claims abstract description 8
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 8
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 8
- 239000007822 coupling agent Substances 0.000 claims abstract description 7
- 239000002270 dispersing agent Substances 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims description 64
- 239000000463 material Substances 0.000 claims description 50
- 239000007921 spray Substances 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- 150000001412 amines Chemical group 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- OIWXXOQGYSGOIN-UHFFFAOYSA-N [diethoxy(hexadecyl)silyl] prop-2-enoate Chemical group C(CCCCCCCCCCCCCCC)[Si](OCC)(OCC)OC(C=C)=O OIWXXOQGYSGOIN-UHFFFAOYSA-N 0.000 claims description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 6
- 230000003116 impacting effect Effects 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 4
- XTUVJUMINZSXGF-UHFFFAOYSA-N N-methylcyclohexylamine Chemical compound CNC1CCCCC1 XTUVJUMINZSXGF-UHFFFAOYSA-N 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- PASDCCFISLVPSO-UHFFFAOYSA-N benzoyl chloride Chemical compound ClC(=O)C1=CC=CC=C1 PASDCCFISLVPSO-UHFFFAOYSA-N 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 229920000223 polyglycerol Polymers 0.000 claims description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims description 3
- 238000000967 suction filtration Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000032683 aging Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 125000003277 amino group Chemical group 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 238000001514 detection method Methods 0.000 description 5
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 150000001491 aromatic compounds Chemical class 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 238000013032 photocatalytic reaction Methods 0.000 description 3
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920003226 polyurethane urea Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000010107 reaction injection moulding Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/02—Polyureas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0405—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads
- B05B13/041—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads with spray heads reciprocating along a straight line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0421—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with rotating spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/68—Arrangements for adjusting the position of spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/758—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing two or more cycloaliphatic rings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
Abstract
The application discloses a low-temperature rapid-curing polyurea coating, which belongs to the technical field of coatings and has the technical scheme that the low-temperature rapid-curing polyurea coating comprises the following components in part by weight: a component A, polyisocyanate, polyether polyol and retarder; and the component B comprises amino-terminated polyether, an amine chain extender, a dispersing agent, a coupling agent and silane modified nano lithopone. The application improves the light stability, corrosion resistance and ageing resistance, and simultaneously improves the curing speed.
Description
Technical Field
The application belongs to the technical field of coatings, and particularly relates to a low-temperature rapid-curing polyurea coating and a curing device thereof.
Background
The spray polyurea technology is derived from the reaction injection molding of polyurethane and polyurea elastomer in 1970, namely, the two components of the constituent materials are mixed by gun nozzle impact, and the mixed reactants are injected into a mold for rapid molding. Later the technology and materials are expanded to the field of painting. The spray polyurea coating has the technical characteristics that: 100% of solid content, no volatilization of organic solvent, rapid solidification, excellent physical and chemical properties and excellent high and low temperature alternating resistance.
The prior Chinese patent with the publication number of CN110157307B discloses a low-temperature rapid-curing polyurea coating, which comprises a component A and a component B, wherein the component A comprises the following preparation raw materials in parts by weight: 40-60 parts of polyisocyanate, 40-60 parts of polyether polyol and 0.01-0.05 part of retarder; the component B comprises the following preparation raw materials in parts by mass: 30-50 parts of amino-terminated polyether 1 compound, 5-10 parts of amino-terminated polyether 2 compound, 10-20 parts of super-toughness polyether amine, 15-20 parts of amino chain extender and 0-5 parts of color paste.
The coating can be cured in a low-temperature high-humidity environment, but is affected by ultraviolet rays, and has low ageing resistance, so that the coating is improved.
Disclosure of Invention
The application aims at solving the technical problems, and provides a low-temperature rapid-curing polyurea coating which improves the light stability, corrosion resistance and ageing resistance and simultaneously improves the curing speed.
The application provides a low-temperature rapid-curing polyurea coating, which comprises the following components:
a component A, polyisocyanate, polyether polyol and retarder;
the component B comprises amino-terminated polyether, an amine chain extender, a dispersing agent, a coupling agent and silane modified nano lithopone;
wherein, the polyisocyanate adopts 3, 3-dimethyl-4, 4-dicyclohexylmethane diisocyanate as a raw material;
the polyether polyol is a polyether polyol with a molecular weight of 2000-4800;
the retarder is selected from one or a combination of more than two of benzoyl chloride or phosphoric acid;
the amino-terminated polyether is at least one of the following substances with the number average molecular weight of 400-5000, at least one of amino-terminated polyethylene glycol ether, amino-terminated polypropylene glycol ether, amino-terminated polyglycerol ether and amino-terminated pentaerythritol ether, and the functionality of the amino-terminated polyether is 2-4;
the amine chain extender is 2, 5-diamino-1, 3-trimethyl cyclohexylmethylamine;
the coupling agent is at least one of KH-550, KH-560 and KH-570;
the granularity of the silane modified nanometer lithopone meets the requirement that D90 is smaller than 50nm, the silane is acryloyloxy hexadecyl diethoxy silane, the nanometer lithopone is added into a mixed solution of ethanol and hydrochloric acid, the acryloyloxy hexadecyl diethoxy silane is dropwise added under the stirring of the rotating speed of 500r/min in a water bath at 40 ℃, the stirring is continued for 3 hours, the suction filtration and the washing are carried out, the mixture is sufficiently dried at 80 ℃, and the silane modified lithopone is obtained after the crushing.
The 3, 3-dimethyl-4, 4-dicyclohexylmethane diisocyanate is used as a raw material, belongs to saturated aliphatic hydrocarbon compounds, is provided with methyl side chains, improves the light stability and weather resistance of the polyurea waterproof coating, overcomes the problem that the coating is easy to age by using an aromatic compound as the raw material, ensures that the coating has enough gel and curing time, is better in permeation combination with a base material, and adopts silane modified nano lithopone to modify the coating, so that the corrosion resistance and ageing resistance of the coating are improved, and simultaneously, nanoparticles can effectively absorb ultraviolet rays and perform photocatalytic reaction, so that the antibacterial performance of the coating is improved, and the pollution resistance of the coating is improved.
Further, the specific curing steps include:
s1, respectively placing the component A and the component B into two separate chambers of a curing device, and then preheating;
s2, pressurizing the components A and B respectively in a chamber, and impacting or striking each other at a high speed to realize the close mixing of the components, and then coating the components on a substrate through a curing device;
s3, curing the substrate coated with the polyurea coating at the temperature of-10 to 15 ℃.
The component A and the component B are sprayed after being impacted and mixed, then low-temperature gas is used for acting on the coating just sprayed, the solidification speed of the coating is improved, and nitrogen is adopted as the gas for solidification.
The application also provides a curing device for rapidly curing the polyurea coating at low temperature, which comprises:
the material placing frame is provided with two chambers for storing materials;
a pressurizing system adapted to the chamber;
the spraying gun body is used for spraying after mixing the component A and the component B, and is provided with an impact cavity which is connected with the cavity;
the curing gun body is used for spraying low-temperature gas to accelerate the curing speed of the coating;
the driving device is used for driving the spraying gun body and the curing gun body to move;
the moving device is used for driving the material placing frame to move;
and the counterweight assembly is arranged on the material placing frame.
The component A and the component B are respectively placed in two chambers on the material placing frame, the pressure is increased to the chambers through a pressurizing system, the component A and the component B are conveyed to the spraying gun body through the pressure, the component A and the component B are mutually impacted and mixed in the impacting chamber and then are sprayed on the substrate, then the curing gun body is used for spraying low-temperature gas, the coating is quickly cured, the spraying gun body and the curing gun body are controlled to move through the driving device, the reciprocating movement during spraying is realized, the material placing frame is controlled to move and advance through the moving device, and the material placing gun body is placed on the material placing frame through the counterweight device for stabilizing the balance of the material placing frame.
Further, the spray gun body includes:
the guide vane is arranged in the impact cavity;
the arc-shaped end is arranged at the end part of the guide vane;
the liquid inlet is arranged at one end of the impact cavity and is connected with the cavity;
the first angle adjusting component is used for adjusting the angle of the spraying gun body.
The component A and the component B are conveyed into the impact cavity through the liquid inlet and impact with the guide vane, the mixing effect is improved through the guide vane, part of mixed liquid is impacted with subsequently conveyed liquid through the arc-shaped section, the impact frequency is increased, the mixing efficiency is further improved, then the mixed liquid is quickly sprayed out after being mixed, the mixed liquid is sprayed onto a substrate, the spray gun body is controlled to rotate through the first angle adjusting component in the spray process, the spray gun body is used for adapting to the spray of the two end parts of the moving stroke of the spray gun body, the spray range is increased, and the spray thickness is more uniform.
Further, the driving device includes:
the driving seat is arranged on the material placing frame;
the driving motor is arranged on the driving seat;
the first gear is arranged on an output shaft of the driving motor;
the driving belt is arranged on the driving seat through the mounting shaft;
a drive shaft adapted to the drive belt;
the second gear is arranged on the driving shaft and is matched with the first gear;
wherein, first angle adjusting component is arranged between the drive belt and the spraying gun body.
The driving seat is hinged with the material placing frame, the inclination angle of the driving seat is adjusted through an air cylinder or a motor and the like, the material placing frame is balanced through a counterweight component during adjustment, the driving motor is arranged on the driving seat, the driving motor drives the first gear to rotate, then the second gear is driven to rotate, the driving shaft is driven to rotate, the driving belt is driven to move, the spray gun body and the curing gun body are controlled to move, the first gear and the second gear adopt bevel gears, the second gear is arranged on two sides of the first gear, the spray gun body and the curing gun body are opposite in direction during movement, the spray gun body continuously sprays through a moving device forwards for a certain distance after moving and spraying along one direction during reciprocating movement, and then the curing gun body corresponds to the area which is just sprayed.
Further, the first angle adjusting assembly includes:
an extension part extending from the end of the spray gun body and penetrating through the driving belt;
a hook part disposed at an end of the extension part;
the column body is arranged on the driving seat and is matched with the hook part;
the adjusting seat is movably arranged on the driving belt;
the telescopic seat is movably arranged on the extension part and is inserted into the adjusting seat;
the adjusting plate is arranged on the telescopic seat;
the first springs are arranged on two sides of the adjusting plate and are propped against the adjusting seat;
the pressure sensor is arranged on the adjusting seat;
the abutting seats are arranged on two sides of the adjusting plate and abut against the pressure sensor;
and the second spring is arranged between the abutting seat and the adjusting plate.
The extension is connected with the spraying gun body, the spraying gun body is perpendicular to the driving belt under the action of the first angle adjusting component under the normal state, when the spraying gun body moves to two ends of the driving seat, the extension is propped against the cylinder, then the hook is matched with the cylinder, the spraying gun body rotates when the driving belt continuously moves, the spraying range of the spraying gun body is increased, when the spraying gun body rotates, the extension pulls the telescopic seat, the adjusting plate moves in the adjusting seat, when the extension is separated from the cylinder, the spraying gun body is reset through the first spring, when the spraying gun body deflects, the adjusting plate moves, the second spring compresses, the pressure sensor acts on the pressure sensor through the abutting seat, the detection value of the pressure sensor changes, the moving speed of the driving belt is changed through the collection and calculation of the changed detection value, and the spraying of the spraying gun body is more uniform.
Further, the curing gun body comprises:
the second angle adjusting assembly is arranged between the curing gun body and the driving belt;
the second angle adjusting component and the first angle adjusting component are identical in structure.
The curing gun body is controlled by the second angle adjusting component, so that the curing gun body can be cured along a spraying path of the spraying gun body, the curing range is ensured to be the same as the spraying range, and the curing effect is ensured to be uniform.
Further, the mobile device includes:
the movable platform is connected with the material placing frame in a mounting way;
the first motor is arranged on the mobile platform;
the screw rod is arranged on an output shaft of the first motor and is matched with the material placing frame;
the first supporting seat is connected with the mobile platform through a first cylinder;
the second supporting seat is connected with the material placing frame in a mounting way through a second air cylinder.
When the material placing frame needs to move forwards, the first supporting seat stretches out through the first air cylinder, so that the first supporting seat is in contact with the ground, the second supporting seat contracts through the second air cylinder, the screw rod is driven to rotate through the first motor, the material placing frame moves along the axis direction of the screw rod, when the material placing frame moves to the limit of the travel of the moving platform, the second supporting seat stretches out through the second air cylinder, so that the second supporting seat is in contact with the ground, the first supporting seat contracts through the first air cylinder, then the moving platform moves forwards under the driving action of the first motor, and the position of the material placing frame on the moving platform is changed.
The beneficial effects of the application are as follows:
1. the 3, 3-dimethyl-4, 4-dicyclohexylmethane diisocyanate is used as the raw material, so that the light stability and weather resistance of the polyurea waterproof coating are improved, the problem that the aromatic compound is used as the raw material and the coating is easy to age is solved, meanwhile, the coating is ensured to have enough gel and curing time, the silane modified nano lithopone is used for modifying the coating, the corrosion resistance and ageing resistance of the coating are improved, meanwhile, the nano particles can effectively absorb ultraviolet rays and perform photocatalytic reaction, the antibacterial performance of the coating is endowed, and the pollution resistance of the coating is improved.
2. The component A and the component B are respectively placed in two chambers on a material placing frame, the pressure is increased to the chambers through a pressurizing system, the component A and the component B are conveyed to a spraying gun body through the pressure, the component A and the component B are mutually impacted and mixed in an impacting cavity and then are sprayed on a substrate, and then low-temperature gas is sprayed through a curing gun body, so that the coating is rapidly cured.
3. The driving motor is arranged on the driving seat, the driving motor drives the first gear to rotate, then the second gear is rotated to drive the driving shaft to rotate, and the driving belt is driven to move, so that the spraying gun body and the curing gun body are controlled to move, the spraying gun body and the curing gun body are opposite in direction when moving, the spraying gun body moves in a reciprocating movement process, and after spraying along one direction, the spraying gun body moves forwards for a certain distance through the moving device to continue spraying, and then the curing gun body is cured in a region corresponding to just spraying.
4. When the driving belt continuously moves, the spraying gun body rotates, the spraying range of the spraying gun body is increased, when the spraying gun body rotates, the extension part pulls the telescopic seat, the adjusting plate moves in the adjusting seat, when the extension part and the column body are separated, the spraying gun body is reset through the first spring, when the spraying gun body deflects, the adjusting plate moves, the second spring compresses, the detection value of the pressure sensor changes through the abutting seat, the moving speed of the driving belt is changed, and the spraying of the spraying gun body is more uniform.
Drawings
FIG. 1 is a schematic view of a curing apparatus according to the present application;
FIG. 2 is a schematic view of the structure of the spray gun body of the present application;
FIG. 3 is a schematic diagram of a front view of a driving device according to the present application;
FIG. 4 is a schematic side view of the driving device of the present application;
FIG. 5 is an enlarged view of the application at A of FIG. 4;
FIG. 6 is a schematic view of the structure of the adjusting seat of the present application;
reference numeral, 100, placing a material rack; 110. a chamber; 200. a spray gun body; 201. an impingement cavity; 210. a deflector; 220. an arc end; 230. a liquid inlet; 300. solidifying the gun body; 400. a driving device; 410. a driving seat; 420. a driving motor; 430. a first gear; 440. a drive belt; 441. a mounting shaft; 450. a drive shaft; 460. a second gear; 500. a mobile device; 510. a mobile platform; 520. a first motor; 530. a screw rod; 540. a first support base; 541. a first cylinder; 550. a second support base; 551. a second cylinder; 600. a counterweight assembly; 700. a first angle adjustment assembly; 710. an extension; 720. a hook portion; 730. a column; 740. an adjusting seat; 750. a telescopic seat; 760. an adjusting plate; 770. a first spring; 780. a pressure sensor; 781. a butt joint seat; 782. and a second spring.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present application, fall within the scope of protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The following provides a detailed description of embodiments of the present application through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
Example 1:
the embodiment of the application provides a low-temperature rapid-curing polyurea coating, which comprises the following components:
a component A, polyisocyanate, polyether polyol and retarder;
the component B comprises amino-terminated polyether, an amine chain extender, a dispersing agent, a coupling agent and silane modified nano lithopone;
wherein, the polyisocyanate adopts 3, 3-dimethyl-4, 4-dicyclohexylmethane diisocyanate as a raw material;
the polyether polyol is a polyether polyol with a molecular weight of 2000-4800;
the retarder is selected from one or a combination of more than two of benzoyl chloride or phosphoric acid;
the amino-terminated polyether is at least one of the following substances with the number average molecular weight of 400-5000, at least one of amino-terminated polyethylene glycol ether, amino-terminated polypropylene glycol ether, amino-terminated polyglycerol ether and amino-terminated pentaerythritol ether, and the functionality of the amino-terminated polyether is 2-4;
the amine chain extender is 2, 5-diamino-1, 3-trimethyl cyclohexylmethylamine;
the coupling agent is at least one of KH-550, KH-560 and KH-570;
the granularity of the silane modified nanometer lithopone meets the requirement that D90 is smaller than 50nm, the silane is acryloyloxy hexadecyl diethoxy silane, the nanometer lithopone is added into a mixed solution of ethanol and hydrochloric acid, the acryloyloxy hexadecyl diethoxy silane is dropwise added under the stirring of the rotating speed of 500r/min in a water bath at 40 ℃, the stirring is continued for 3 hours, the suction filtration and the washing are carried out, the mixture is sufficiently dried at 80 ℃, and the silane modified lithopone is obtained after the crushing.
The 3, 3-dimethyl-4, 4-dicyclohexylmethane diisocyanate is used as a raw material, belongs to saturated aliphatic hydrocarbon compounds, is provided with methyl side chains, improves the light stability and weather resistance of the polyurea waterproof coating, overcomes the problem that the coating is easy to age by using an aromatic compound as the raw material, ensures that the coating has enough gel and curing time, is better in permeation combination with a base material, and adopts silane modified nano lithopone to modify the coating, so that the corrosion resistance and ageing resistance of the coating are improved, and simultaneously, nanoparticles can effectively absorb ultraviolet rays and perform photocatalytic reaction, so that the antibacterial performance of the coating is improved, and the pollution resistance of the coating is improved.
Further, the specific curing steps include:
s1, respectively placing the component A and the component B into two separated chambers 110 of a curing device, and then preheating;
s2, pressurizing the components A and B respectively in a chamber 110, impacting or striking each other at a high speed to realize the close mixing of the two components, and coating the components on a substrate through a curing device;
s3, curing the substrate coated with the polyurea coating at the temperature of-10 to 15 ℃.
The component A and the component B are sprayed after being impacted and mixed, then low-temperature gas is used for acting on the coating just sprayed, the solidification speed of the coating is improved, and nitrogen is adopted as the gas for solidification.
Example 2:
as shown in fig. 1 and 3, the present application further provides a curing device for rapidly curing polyurea coating at low temperature, the curing device comprising:
a material placing rack 100 provided with two chambers 110 for storing materials;
a pressurization system, adapted to the chamber 110;
the spraying gun body 200 is used for spraying after mixing the component A and the component B, the spraying gun body 200 is provided with an impact cavity 201, and the impact cavity 201 is connected with the cavity 110;
the curing gun body 300 is used for spraying low-temperature gas to accelerate the curing speed of the coating;
the driving device 400 is used for driving the spraying gun body 200 and the curing gun body 300 to move;
the moving device 500 is used for driving the material placing frame 100 to move;
the weight assembly 600 is placed on the placement frame 100.
The component A and the component B are respectively placed in two chambers 110 on the material placing frame 100, the pressure is increased to the chambers 110 through a pressurizing system, the component A and the component B are conveyed to the spraying gun body 200 through the pressure, the component A and the component B are mutually impacted and mixed in the impacting cavity 201 and then are sprayed on a substrate, then the curing gun body 300 is used for spraying low-temperature gas, the coating is quickly cured, the spraying gun body 200 and the curing gun body 300 are controlled to move through the driving device 400, the reciprocating movement during spraying is realized, the material placing frame 100 is controlled to move and advance through the moving device 500, and the coating gun body is placed on the material placing frame 100 through a counterweight device for stabilizing the balance of the material placing frame 100.
Example 3:
as shown in fig. 2, 4 and 5, the embodiment of the present application provides a curing device for low-temperature rapid curing polyurea coating, which includes the technical features described above, and further, the spray gun body 200 includes:
a baffle 210 disposed in the impingement cavity 201;
an arcuate end 220 disposed at an end of the baffle 210;
a liquid inlet 230 disposed at one end of the impingement cavity 201 and connected to the chamber 110;
a first angle adjustment assembly 700 for adjusting the angle of the spray gun body 200.
The component A and the component B are conveyed into the impact cavity 201 through the liquid inlet 230, impact with the guide vane 210, the mixing effect is increased through the guide vane 210, part of mixed liquid is impacted with subsequently conveyed liquid through the arc-shaped section, the impact frequency is increased, the mixing efficiency is further improved, then the mixed liquid is quickly sprayed out after being mixed and sprayed onto a substrate, the spray gun body 200 is controlled to rotate through the first angle adjusting component 700 in the spraying process, and the spray gun body is used for adapting to spraying of the two end parts of the moving stroke of the spray gun body 200, so that the spraying range is increased, and the spraying thickness is more uniform.
Example 4:
as shown in fig. 3 and 4, the embodiment of the present application provides a curing device for low-temperature rapid curing polyurea coating, and further, the driving device 400 includes:
a driving seat 410 mounted on the material placing frame 100;
a driving motor 420 mounted on the driving seat 410;
a first gear 430 mounted on an output shaft of the driving motor 420;
a driving belt 440 mounted on the driving base 410 through a mounting shaft 441;
a driving shaft 450 fitted with the driving belt 440;
a second gear 460 mounted on the driving shaft 450 and adapted to the first gear 430;
wherein the first angle adjustment assembly 700 is disposed between the drive belt 440 and the spray gun body 200.
The driving seat 410 is hinged with the material placing frame 100, the inclination angle of the driving seat 410 is adjusted through an air cylinder or a motor and the like, the material placing frame 100 is balanced through the counterweight assembly 600 during adjustment, the driving motor 420 is arranged on the driving seat 410, the driving motor 420 drives the first gear 430 to rotate, then the second gear 460 is rotated to drive the driving shaft 450 to rotate, the driving belt 440 is moved, the spray gun body 200 and the curing gun body 300 are controlled to move, the first gear 430 and the second gear 460 adopt bevel teeth, the second gear 460 is arranged on two sides of the first gear 430, the spray gun body 200 and the curing gun body 300 are opposite in direction during movement, the spray gun body 200 moves along one direction for spraying and then moves forward for a certain distance through the moving device 500 for continuous spraying, and then the curing gun body 300 is cured corresponding to the area just sprayed.
Example 5:
as shown in fig. 4, 5 and 6, the embodiment of the present application provides a curing apparatus for low-temperature rapid curing polyurea coating, further, the first angle adjusting assembly 700 includes:
an extension 710 extending from an end of the spray gun body 200 and penetrating through the driving belt 440;
a hook 720 disposed at an end of the extension 710;
a column 730 mounted on the driving seat 410 and adapted to the hook 720;
an adjusting seat 740 movably mounted on the driving belt 440;
the telescopic seat 750 is movably installed on the extension part 710 and is inserted into the adjusting seat 740;
an adjusting plate 760 mounted on the telescopic seat 750;
the first springs 770 are disposed at both sides of the adjusting plate 760 and are abutted against the adjusting seats 740;
a pressure sensor 780 disposed on the regulator block 740;
the propping seats 781 are arranged on two sides of the adjusting plate 760 and propped against the pressure sensor 780;
a second spring 782 is interposed between the abutment 781 and the adjustment plate 760.
The extension portion 710 is connected with the spray gun body 200, the spray gun body 200 is perpendicular to the driving belt 440 under the action of the first angle adjusting component 700 in a normal state, when the spray gun body 200 moves to two ends of the driving seat 410, the extension portion 710 is abutted against the column 730, then the hook portion 720 is matched with the column 730, when the driving belt 440 continuously moves, the spray gun body 200 rotates, the spray range of the spray gun body 200 is increased, when the spray gun body 200 rotates, the extension portion 710 pulls the telescopic seat 750, the adjusting plate 760 moves in the adjusting seat 740, when the extension portion 710 is separated from the column 730, the spray gun body 200 is reset through the first spring 770, when the spray gun body 200 deflects, the adjusting plate 760 moves, the second spring 782 compresses, the detection value of the pressure sensor 780 changes through the abutting seat 781, the moving speed of the driving belt 440 is changed through the changed detection value collecting calculation, and the spray of the spray gun body 200 is more uniform.
Example 6:
as shown in fig. 1 and 3, the embodiment of the present application provides a curing device for rapidly curing polyurea coating at low temperature, which includes the technical features described above, and further, the curing gun body 300 includes:
a second angle adjusting assembly disposed between the curing gun body 300 and the driving belt 440;
wherein the second angle adjusting assembly is identical in structure to the first angle adjusting assembly 700.
The curing gun body 300 is controlled by the second angle adjusting component, so that the curing gun body can be cured along the spraying path of the spraying gun body 200, the curing range is ensured to be the same as the spraying range, and the curing effect is ensured to be uniform.
Further, the mobile device 500 includes:
the movable platform 510 is connected with the material placing frame 100 in a mounting way;
a first motor 520 mounted on the moving platform 510;
the screw rod 530 is arranged on the output shaft of the first motor 520, and the screw rod 530 is matched with the material placing frame 100;
the first support base 540 is installed and connected with the mobile platform 510 through the first cylinder 541;
the second supporting seat 550 is connected with the material placing frame 100 through a second air cylinder 551.
When the material placing frame 100 needs to move forward, the first supporting seat 540 extends out through the first air cylinder 541, so that the first supporting seat 540 contacts with the ground, the second supporting seat 550 contracts through the second air cylinder 551, the screw rod 530 is driven to rotate through the first motor 520, so that the material placing frame 100 moves along the axial direction of the screw rod 530, when the material placing frame 100 moves to the stroke limit of the moving platform 510, the second supporting seat 550 extends out through the second air cylinder 551, so that the second supporting seat 550 contacts with the ground, the first supporting seat 540 contracts through the first air cylinder 541, then the moving platform 510 moves forward under the driving action of the first motor 520, and the position of the material placing frame 100 on the moving platform 510 is changed.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (8)
1. A low temperature rapid cure polyurea coating comprising:
a component A, polyisocyanate, polyether polyol and retarder;
the component B comprises amino-terminated polyether, an amine chain extender, a dispersing agent, a coupling agent and silane modified nano lithopone;
wherein, the polyisocyanate adopts 3, 3-dimethyl-4, 4-dicyclohexylmethane diisocyanate as a raw material;
the polyether polyol is a polyether polyol with a molecular weight of 2000-4800;
the retarder is selected from one or a combination of more than two of benzoyl chloride or phosphoric acid;
the amino-terminated polyether is at least one of the following substances with the number average molecular weight of 400-5000, at least one of amino-terminated polyethylene glycol ether, amino-terminated polypropylene glycol ether, amino-terminated polyglycerol ether and amino-terminated pentaerythritol ether, and the functionality of the amino-terminated polyether is 2-4;
the amine chain extender is 2, 5-diamino-1, 3-trimethyl cyclohexylmethylamine;
the coupling agent is at least one of KH-550, KH-560 and KH-570;
the granularity of the silane modified nanometer lithopone meets the requirement that D90 is smaller than 50nm, the silane is acryloyloxy hexadecyl diethoxy silane, the nanometer lithopone is added into a mixed solution of ethanol and hydrochloric acid, the acryloyloxy hexadecyl diethoxy silane is dropwise added under the stirring of the rotating speed of 500r/min in a water bath at 40 ℃, the stirring is continued for 3 hours, the suction filtration and the washing are carried out, the mixture is sufficiently dried at 80 ℃, and the silane modified lithopone is obtained after the crushing.
2. The low temperature rapid cure polyurea coating of claim 1, wherein the specific curing step comprises:
s1, respectively placing the component A and the component B into two separate chambers of a curing device, and then preheating;
s2, pressurizing the components A and B respectively in a chamber, and impacting or striking each other at a high speed to realize the close mixing of the components, and then coating the components on a substrate through a curing device;
s3, curing the substrate coated with the polyurea coating at the temperature of-10 to 15 ℃.
3. A curing apparatus suitable for use in the low temperature rapid cure polyurea coating of claim 2, the curing apparatus comprising:
the material placing rack (100) is provided with two chambers (110) for storing materials;
a pressurizing system adapted to the chamber (110);
the spraying gun body (200) is used for spraying after mixing the component A and the component B, the spraying gun body (200) is provided with an impact cavity (201), and the impact cavity (201) is connected with the cavity (110);
the curing gun body (300) is used for spraying low-temperature gas to accelerate the curing speed of the coating;
the driving device (400) is used for driving the spraying gun body (200) and the curing gun body (300) to move;
the moving device (500) is used for driving the material placing frame (100) to move;
the counterweight assembly (600) is arranged on the material placing frame (100).
4. A curing device for low temperature rapid cure polyurea coating as in claim 3, wherein the spray gun body (200) comprises:
a deflector (210) disposed in the impingement cavity (201);
an arc-shaped end (220) arranged at the end part of the guide vane (210);
a liquid inlet (230) arranged at one end of the striking cavity (201) and connected with the cavity (110);
a first angle adjustment assembly (700) for adjusting the angle of the spray gun body (200).
5. The curing apparatus for low-temperature rapid curing polyurea coating as recited in claim 4, wherein the driving apparatus (400) comprises:
a driving seat (410) which is arranged on the material placing frame (100);
a driving motor (420) mounted on the driving base (410);
a first gear (430) mounted on an output shaft of the driving motor (420);
a drive belt (440) mounted on the drive base (410) by a mounting shaft (441);
a drive shaft (450) adapted to the drive belt (440);
a second gear (460) mounted on the drive shaft (450) and adapted to the first gear (430);
wherein the first angle adjustment assembly (700) is disposed between the drive belt (440) and the spray gun body (200).
6. The curing apparatus for low temperature rapid cure polyurea coating as recited in claim 5, wherein the first angle adjustment assembly (700) comprises:
an extension (710) extending from an end of the spray gun body (200) and penetrating through the drive belt (440);
a hook (720) disposed at an end of the extension (710);
a column (730) mounted on the driving seat (410) and adapted to the hook (720);
an adjusting seat (740) movably mounted on the driving belt (440);
the telescopic seat (750) is movably arranged on the extension part (710) and is inserted into the adjusting seat (740);
an adjusting plate (760) mounted on the telescopic seat (750);
a first spring (770) disposed at both sides of the adjusting plate (760) and abutting against the adjusting seat (740);
a pressure sensor (780) disposed on the adjustment seat (740);
the propping seats (781) are arranged on two sides of the adjusting plate (760) and propped against the pressure sensor (780);
a second spring (782) is arranged between the abutting seat (781) and the adjusting plate (760).
7. The curing apparatus for low-temperature rapid curing polyurea coating as recited in claim 6, wherein the curing gun body (300) comprises:
a second angle adjustment assembly disposed between the curing gun body (300) and the drive belt (440);
wherein the second angle adjustment assembly is structurally identical to the first angle adjustment assembly (700).
8. The curing apparatus for low temperature rapid cure polyurea coating as recited in claim 7, wherein the moving apparatus (500) comprises:
the movable platform (510) is connected with the material placing frame (100) in a mounting way;
a first motor (520) mounted on the mobile platform (510);
the screw rod (530) is arranged on an output shaft of the first motor (520), and the screw rod (530) is matched with the material placing frame (100);
the first supporting seat (540) is connected with the mobile platform (510) in a mounting way through a first air cylinder (541);
the second supporting seat (550) is connected with the material placing frame (100) in a mounting way through a second air cylinder (551).
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CN110157307A (en) * | 2019-05-20 | 2019-08-23 | 王道前 | A kind of low-temperature fast-curing carbamide paint and preparation method thereof |
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