CN115873491A - Solvent-free ultrathin waterborne polyurethane mortar self-leveling coating and preparation method thereof - Google Patents
Solvent-free ultrathin waterborne polyurethane mortar self-leveling coating and preparation method thereof Download PDFInfo
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- CN115873491A CN115873491A CN202211338301.6A CN202211338301A CN115873491A CN 115873491 A CN115873491 A CN 115873491A CN 202211338301 A CN202211338301 A CN 202211338301A CN 115873491 A CN115873491 A CN 115873491A
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- 229920002635 polyurethane Polymers 0.000 title claims abstract description 44
- 239000004814 polyurethane Substances 0.000 title claims abstract description 44
- 238000000576 coating method Methods 0.000 title claims abstract description 40
- 239000011248 coating agent Substances 0.000 title claims abstract description 39
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000000839 emulsion Substances 0.000 claims abstract description 58
- 229920005862 polyol Polymers 0.000 claims abstract description 32
- 150000003077 polyols Chemical class 0.000 claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 31
- 239000012948 isocyanate Substances 0.000 claims abstract description 27
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 21
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims abstract description 17
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000010453 quartz Substances 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000004575 stone Substances 0.000 claims abstract description 14
- 150000005846 sugar alcohols Polymers 0.000 claims abstract description 14
- 229920000538 Poly[(phenyl isocyanate)-co-formaldehyde] Polymers 0.000 claims abstract description 13
- 239000004568 cement Substances 0.000 claims abstract description 13
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 11
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 11
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 11
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims abstract description 10
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 10
- 238000010008 shearing Methods 0.000 claims description 41
- 238000006243 chemical reaction Methods 0.000 claims description 26
- 239000011347 resin Substances 0.000 claims description 23
- 229920005989 resin Polymers 0.000 claims description 23
- 239000004359 castor oil Substances 0.000 claims description 20
- 235000019438 castor oil Nutrition 0.000 claims description 20
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 20
- 230000001804 emulsifying effect Effects 0.000 claims description 19
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 12
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 12
- 230000003472 neutralizing effect Effects 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 8
- 239000006004 Quartz sand Substances 0.000 claims description 7
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 6
- 238000005886 esterification reaction Methods 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 241001330002 Bambuseae Species 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 230000032050 esterification Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000006068 polycondensation reaction Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 4
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 4
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000001361 adipic acid Substances 0.000 claims description 3
- 235000011037 adipic acid Nutrition 0.000 claims description 3
- BVFSYZFXJYAPQJ-UHFFFAOYSA-N butyl(oxo)tin Chemical compound CCCC[Sn]=O BVFSYZFXJYAPQJ-UHFFFAOYSA-N 0.000 claims description 3
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 3
- YOURXVGYNVXQKT-UHFFFAOYSA-N oxacycloundecane-2,11-dione Chemical compound O=C1CCCCCCCCC(=O)O1 YOURXVGYNVXQKT-UHFFFAOYSA-N 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 239000003973 paint Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 7
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000004945 emulsification Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000000306 component Substances 0.000 description 5
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920005906 polyester polyol Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 description 3
- 239000008158 vegetable oil Substances 0.000 description 3
- 235000013305 food Nutrition 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
Images
Classifications
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a solvent-free ultrathin waterborne polyurethane mortar self-leveling coating and a preparation method thereof, wherein the coating is prepared from a polyol emulsion, an isocyanate curing agent and powder, and the polyol emulsion comprises the following raw materials in parts by weight: 10-20 parts of polyhydric alcohol, 0.5-2 parts of dicarboxylic acid, 0.01-0.03 part of catalyst, 1-2 parts of defoaming agent and 0.5-5 parts of emulsifier; the isocyanate curing agent comprises the following raw materials in parts by weight: 0-3 parts of toluene diisocyanate, 0-3 parts of diphenylmethane diisocyanate and 26-32 parts of polymethylene polyphenyl isocyanate; the powder comprises the following raw materials in parts by weight: 28-32 parts of white cement, 1-2 parts of polycarboxylate water reducing agent, 5-9 parts of calcium hydroxide and 60-65 parts of quartz stone. The solvent-free ultrathin waterborne polyurethane mortar self-leveling coating and the preparation method thereof have the advantages that the construction thickness can reach 1-2mm, and the coating has good folding and compression resistance.
Description
Technical Field
The invention relates to the technical field of waterborne polyurethane mortar self-leveling coatings, in particular to a solvent-free ultrathin waterborne polyurethane mortar self-leveling coating and a preparation method thereof.
Background
The waterborne polyurethane mortar self-leveling floor is an organic/inorganic hybrid integrated green environment-friendly high-end floor material, has better physical comprehensive properties such as high compressive strength, impact resistance, crack resistance, wear resistance, chemical medium resistance, high and low temperature resistance and the like, and is widely applied to industrial places with high requirements on food cold chain, chemical corrosion, high-temperature damp and hot, low-temperature freezing, heavy load strong impact and the like. Because the traditional waterborne polyurethane mortar self-leveling coating usually has better construction leveling property and surface effect when the construction thickness is 4-6 mm, and does not need to bear heavy load, but needs to meet the requirements of places with wear resistance, chemical medium resistance or high and low temperature, such as fire-fighting equipment rooms, staircases and the like of food factories, the use requirement can be met by the thickness of the terrace of 1-2mm, so that the ultrathin waterborne polyurethane mortar self-leveling coating has higher cost advantage in the places, and has important significance for the development of the waterborne polyurethane mortar self-leveling terrace.
The castor oil is a renewable natural vegetable oil polyalcohol containing a plurality of hydroxyl groups, has the characteristics of high temperature resistance, difficult oxidation, low freezing point and the like, and a polyurethane product prepared by using the castor oil modified polyalcohol has the advantages of better mechanical property, good water resistance, good thermal stability and the like.
Disclosure of Invention
The invention aims to provide a solvent-free ultrathin waterborne polyurethane mortar self-leveling coating and a preparation method thereof, and aims to solve the problems of high thickness and high cost of the conventional waterborne polyurethane mortar self-leveling floor coating in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a solvent-free ultrathin waterborne polyurethane mortar self-leveling coating is prepared from a polyol emulsion, an isocyanate curing agent and powder,
the polyol emulsion comprises the following raw materials in parts by weight: 10-20 parts of polyhydric alcohol, 0.5-2 parts of dicarboxylic acid, 0.01-0.03 part of catalyst, 1-2 parts of defoaming agent and 0.5-5 parts of emulsifier;
the isocyanate curing agent comprises the following raw materials in parts by weight: 0-3 parts of toluene diisocyanate, 0-3 parts of diphenylmethane diisocyanate and 26-32 parts of polymethylene polyphenyl isocyanate;
the powder comprises the following raw materials in parts by weight: 28-32 parts of white cement, 1-2 parts of polycarboxylate water reducing agent, 5-9 parts of calcium hydroxide and 60-65 parts of quartz stone;
the mass ratio of the polyol emulsion, the isocyanate curing agent and the powder in the coating is 25:28:102.
preferably, the vegetable oil-based polyol emulsion has a hydroxyl value of 160-360mgKOH/g and an acid value of 1.5-3 mgKOH/g.
Preferably, the isocyanate curing agent is prepared by mixing two or three of toluene diisocyanate, diphenylmethane diisocyanate and polymethylene polyphenyl isocyanate.
Preferably, the polyhydric alcohol comprises castor oil and one or more of trimethylolpropane, pentaerythritol, diethylene glycol, 1,4-butanediol and diethylene glycol, the dicarboxylic acid is one or more of adipic acid, terephthalic acid, sebacic anhydride and isophthalic acid, and the weight part of the castor oil in the polyhydric alcohol emulsion is 40-60%.
Preferably, the catalyst is one of tetrabutyl titanate, concentrated sulfuric acid and monobutyltin oxide.
Preferably, the quartz sand is one or two of 20-40 mesh quartz stone, 40-70 mesh quartz stone and 50-100 mesh quartz stone.
Preferably, the preparation method comprises the following steps:
s1, adding polyhydric alcohol, dicarboxylic acid and a catalyst into a reaction kettle provided with a condensation water separator and a thermometer according to the weight part ratio relationship for reaction, introducing nitrogen for protection, heating to 140-210 ℃, and carrying out esterification polycondensation reaction;
s2: in the reaction kettle of the step S1, measuring the acid value of the resin at intervals of 3h until the acid value of the resin is between 1.5mgKOH/g and 3mgKOH/g, and introducing cooling water to reduce the temperature inside the reaction kettle to 40 ℃;
s3, putting a certain amount of neutralizing agent NaOH into deionized water, neutralizing with the resin prepared in the step S2 after completely dissolving, then adding the resin and the resin into an emulsifying shearing machine together, then adding a defoaming agent and an emulsifying agent according to the weight proportion relation, and fully emulsifying by adopting a 5000RPM emulsifying shearing machine to prepare polyol emulsion;
s4: adding Toluene Diisocyanate (TDI), diphenylmethane diisocyanate (MDI) and polymethylene polyphenyl isocyanate (PAPI) into a dry reaction kettle according to the weight part ratio, regulating the speed to 400r/min, and stirring for 1h to obtain an isocyanate curing agent;
s5: according to the weight part ratio relation, adding white cement, polycarboxylate water reducing agent, calcium hydroxide and quartz stone into a mixer, mixing and dispersing for 1h to obtain powder;
s6: according to the weight ratio, adding the polyol emulsion into an isocyanate curing agent in a mixer, regulating the speed to 900r/min, dispersing and mixing for 20s, then slowly adding the powder into the mixer, regulating the speed to 900r/min, mixing and dispersing for 2min to obtain the solvent-free ultrathin waterborne polyurethane mortar self-leveling coating;
the emulsifying shearing machine in the step S3 comprises a tank body, wherein an installation frame is arranged in the tank body, a motor is fixed at the top of the installation frame, the output end of the motor is connected with a rotor shaft, and the rotor shaft is positioned at the bottom of the installation frame;
still include the stator axle, the stator axle is fixed in the bottom position of mounting bracket, and the stator axle is located the outside of rotor axle to the bottom of stator axle is fixed with the mounting panel, first blade and shear plate are installed to the bottom position of rotor axle, and the shear plate is located first blade below to first blade is located the mounting panel below, the below of mounting panel is fixed with the stator circle, and the stator circle is located the outside of first blade and shear plate, the epaxial movable sleeve of stator is equipped with the activity section of thick bamboo, and the activity section of thick bamboo is located the top of mounting panel, and the top edge in the activity section of thick bamboo outside is fixed with the kickboard, the inner wall of activity section of thick bamboo is fixed with the horizontal pole, and the inner of horizontal pole he installs the installation cover through the bearing to second blade and another shear plate are installed in the outside of installation cover, and this shear plate is located the below of horizontal pole, and the second blade is located the below of this shear plate simultaneously, the installation cover is established on the rotor axle, and the outside of rotor axle is provided with the locating lever to the guide hole slides and sets up in the locating groove, and open on the inner wall of installation cover, has seted up the second torsion spring, and install the second torsion spring, and set up the second pivot, and the mounting plate downward sloping through the second.
Preferably, the shearing hole has been seted up to the peripheral intercommunication in the shear plate, and the top of shearing the hole is fixed with the shearing net to the shearing hole is the design of arc slope structure, and the bottom of shearing the hole is the design of loudspeaker form structure moreover, through the design of shearing the hole, guides and cuts the emulsion.
Preferably, the stator ring is internally provided with first guide holes at equal angles, the first guide holes and the second guide holes are distributed in opposite directions, the first blades and the second blades at the inner positions of the stator ring are opposite in direction, and emulsion led out from the upper position and the lower position is subjected to opposite impact dispersion in the middle through the second guide holes and the second guide holes, so that the emulsifying efficiency is improved.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention relates to a waterborne polyurethane mortar self-leveling coating, which belongs to a composite material, and comprises the following components: hydration reaction between inorganic cement in the powder and water in the polyol emulsion; chemically reacting castor oil hydroxyl resin in the polyol emulsion with isocyanate bi-component polyurethane in an isocyanate curing agent; chemically reacting water with isocyanate in the isocyanate curing agent; the chemical reaction among the polyurethane component, water and cement components and the like enables the final product to be the waterborne polyurethane mortar self-leveling terrace material with uniform components, stable performance and excellent comprehensive performance; according to the invention, castor oil, a small amount of polyol and dicarboxylic acid are subjected to esterification reaction to prepare castor oil modified polyester polyol resin, a neutralizing agent is added for neutralization treatment to improve the internal emulsification capacity of the castor oil modified polyester polyol, and an emulsifier and a defoamer are added to prepare the plant-based polyol emulsion of the waterborne polyurethane mortar coating, and the castor oil modified polyester polyol emulsion is prepared by polymerizing to form internal emulsification resin and adding a high alkali-resistant external emulsifier, so that the polyol emulsion has good wrapping property and compatibility on powder, and the polyol emulsion as a macromolecular emulsification resin has the same emulsification property on an isocyanate curing agent, so that the waterborne polyurethane self-leveling mortar obtained by compounding the polyol emulsion, the isocyanate curing agent and the powder has excellent compatibility, and therefore, when the construction thickness is only 1-2mm, the construction leveling property is good; in addition, the castor oil is a renewable natural vegetable oil polyol containing a plurality of hydroxyl groups, and has the characteristics of high temperature resistance, difficult oxidation, low freezing point and the like, so that a polyurethane product prepared from the castor oil modified polyol has the advantages of good mechanical property, good water resistance, good thermal stability and the like, therefore, the castor oil modified waterborne polyurethane mortar terrace also has the characteristics of good mechanical property, good water resistance, good thermal stability and the like of the castor oil modified polyurethane product, and no organic solvent is added in the preparation of the whole raw material, so that the environmental protection is realized;
2. the invention is provided with a high-efficiency emulsification shearing structure, a first blade and a second blade are arranged at the upper position and the lower position of an emulsification shearing machine, shearing plates are arranged at the positions of the first blade and the second blade, the rotation of the shearing plates guides emulsion through shearing holes of an internal arc inclined structure, the emulsion is efficiently sheared by matching a shearing net, the resistance brought by the shearing plates can be reduced, the internal flow direction of the emulsion is divided into two parts by matching with the design of the opposite orientation structures of the first blade and the second blade, the emulsion is enabled to be from bottom to top through the first blade, the emulsion is enabled to be from top to bottom through the second blade, the shearing emulsification efficiency is greatly improved through the flow of the emulsion at the upper position and the lower position through the floating plate, the first guide hole is matched with the first blade for dispersing and shearing, the second guide hole and the second blade are used for dispersing and shearing, under the buoyancy effect, the floating plate is matched with the second blade, the emulsion is enabled to be sprayed out at the upper position and the lower position of the emulsion, the floating plate, the emulsion is further, the emulsion is enabled to be dispersed and the emulsion is further improved in the upper position and the mixing efficiency, the emulsion and the emulsion can be further improved in the mixing efficiency.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic top view of the shear plate of the present invention;
FIG. 3 is a schematic top view of a cross-sectional structure of a shear hole of the present invention;
FIG. 4 is a schematic top sectional view of the mounting sleeve of the present invention;
FIG. 5 is a schematic view of a front cross-sectional structure of the movable cylinder of the present invention.
In the figure: 1. a tank body; 2. a mounting frame; 3. a motor; 4. a stator shaft; 5. mounting a plate; 6. a rotor shaft; 7. a first blade; 8. a shear plate; 81. shearing holes; 81. shearing the net; 9. a stator ring; 91. a first guide hole; 10. a movable barrel; 101. a second guide hole; 102. floating sheets; 11. a floating plate; 12. a cross bar; 13. installing a sleeve; 14. a second blade; 15. positioning a rod; 16. and (6) positioning a groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a solvent-free ultrathin waterborne polyurethane mortar self-leveling coating and a preparation method thereof are disclosed, wherein the coating comprises a tank body 1, a mounting frame 2, a motor 3, a stator shaft 4, a mounting plate 5, a rotor shaft 6, a first blade 7, a shear plate 8, a shear hole 81, a shear net 82, a stator ring 9, a first guide hole 91, a movable cylinder 10, a second guide hole 101, a floating sheet 102, a floating plate 11, a cross rod 12, a mounting sleeve 13, a second blade 14, a positioning rod 15 and a positioning groove 16;
example 1
The solvent-free ultrathin waterborne polyurethane mortar self-leveling coating comprises the following raw materials:
11 parts by weight of castor oil
1.5 parts by weight of trimethylolpropane
1 part by weight of adipic acid
0.015 parts by weight of tetrabutyl titanate
2 parts of BYK-066N defoaming agent
1 part by weight of toluene diisocyanate TDI-80
3 parts by weight of diphenylmethane diisocyanate MDI-50
26 parts by weight of polymethylene polyphenyl isocyanate PAPI
30 parts by weight of white cement 525
1.5 parts by weight of polycarboxylate type water reducing agent CP1701X
6 parts by weight of calcium hydroxide
60 parts by weight of 40-70 mesh quartz sand
The preparation method comprises the following steps:
s1, adding polyalcohol, dicarboxylic acid and a catalyst into a reaction kettle provided with a condensation water separator and a thermometer for reaction, introducing nitrogen for protection, heating to 145 ℃, and carrying out esterification polycondensation;
s2: in the reaction kettle of the step S1, measuring the acid value of the resin at intervals of 3h until the acid value of the resin is between 1.5mgKOH/g and 3mgKOH/g, and introducing cooling water to reduce the temperature inside the reaction kettle to 40 ℃; (ii) a
S3, putting a certain amount of neutralizing agent NaOH into deionized water, neutralizing with the resin prepared in the step S2 after completely dissolving, then adding into an emulsifying shearing machine together, then adding a defoaming agent and an emulsifying agent, and fully emulsifying by adopting a 5000RPM emulsifying shearing machine to prepare polyol emulsion;
s4: adding toluene diisocyanate (TDI-80), diphenylmethane diisocyanate (MDI-50) and polymethylene polyphenyl isocyanate (PAPI) into a dry reaction kettle, regulating the speed to 400r/min, and stirring for 1h to obtain an isocyanate curing agent;
s5: adding white cement, polycarboxylate water reducing agent, calcium hydroxide and quartz stone into a mixer, mixing and dispersing for 1h to obtain powder;
s6: and (3) adding the polyol emulsion into an isocyanate curing agent in a mixer, regulating the speed to 900r/min, dispersing and mixing for 20s, then slowly adding the powder into the mixer, regulating the speed to 900r/min, mixing and dispersing for 2min to obtain the solvent-free ultrathin waterborne polyurethane mortar self-leveling coating.
The emulsifying shearing machine in the step S3 comprises a tank body 1, wherein a mounting frame 2 is arranged in the tank body 1, a motor 3 is fixed at the top of the mounting frame 2, the output end of the motor 3 is connected with a rotor shaft 6, and the rotor shaft 6 is positioned at the bottom of the mounting frame 2; the stator shaft 4 is fixed at the bottom position of the mounting frame 2, the stator shaft 4 is located outside the rotor shaft 6, the bottom of the stator shaft 4 is fixed with the mounting plate 5, the bottom position of the rotor shaft 6 is provided with the first blade 7 and the shear plate 8, the shear plate 8 is located below the first blade 7, the first blade 7 is located below the mounting plate 5, the lower part of the mounting plate 5 is fixed with the stator ring 9, the stator ring 9 is located outside the first blade 7 and the shear plate 8, the movable sleeve is provided with the movable cylinder 10 on the stator shaft 4, the movable cylinder 10 is located above the mounting plate 5, the top edge outside the movable cylinder 10 is fixed with the floating plate 11, the inner wall of the movable cylinder 10 is fixed with the transverse rod 12, the inner end of the transverse rod 12 is provided with the mounting sleeve 13 through a bearing, the outer side of the mounting sleeve 13 is provided with the second blade 14 and the other shear plate 8, the shear plate 8 is located below the transverse rod 12, the second blade 14 is located below the guide hole 8, the mounting sleeve 13 is sleeved on the rotor shaft 6, the outer side of the rotor shaft 6 is provided with the shear plate 14, the positioning rod 15, and the positioning groove 16 is provided with the second positioning groove 101, and the inner wall of the positioning groove 10 is provided with the elastic positioning groove 102, and the elastic positioning groove 101, and the elastic positioning groove 16 is provided with the second positioning groove 101. Preferably, a shear hole 81 is formed in the shear plate 8 in a through manner, a shear net 82 is fixed to the top of the shear hole 81, the shear hole 81 is designed to be an arc-shaped inclined structure, and the bottom of the shear hole 81 is designed to be a horn-shaped structure. Preferably, the stator ring 9 is internally provided with a first guide hole 91 at an equal angle, the first guide hole 91 and the second guide hole 101 are distributed oppositely, and the first blade 7 and the second blade 14 in the inner position of the stator ring 9 face oppositely; when emulsification shearing is carried out, required raw materials are poured into the tank body 1, according to the liquid level of emulsion, the floating plate 11 is forced to drive the movable cylinder 10 to slide on the stator shaft 4, meanwhile, the movable cylinder 10 drives the mounting sleeve 13 to slide through the cross rod 12, the positioning groove 16 in the mounting sleeve 13 slides on the positioning rod 15, so that the floating plate 11 is positioned on the liquid level, the second blade 14 and the shearing plate 8 in the movable cylinder 10 are positioned below the liquid level, the motor 3 is started, the motor 3 drives the stator shaft 4 to rotate, the stator shaft 4 drives the first blade 7 and the shearing plate 8 at the bottom to rotate, the shearing hole 81 of the arc-shaped inclined structure in the movable cylinder 8 guides the emulsion to a certain degree and cooperates with the shearing net 82 to shear the emulsion, simultaneously, the emulsion is driven to flow and shear through the first blade 7, so that the emulsion is guided upwards through the first guide hole 91 in the shearing ring 9, and similarly, the stator shaft 4 drives the second blade 14 and the shearing plate 8 above through the positioning rod 15 and the positioning groove 16 to rotate, the second guide hole 101 and the emulsion are guided upwards through the guide hole 91 in the floating hole 101, so that the emulsion is guided and the emulsion is guided to be distributed in a buoyancy impact and the floating cylinder, and the emulsion is distributed in a second guide hole 101, so that the emulsion is distributed in a high-efficiency of the floating cylinder, and a buoyancy impact and a high-impact shear efficiency, and impact shear efficiency is improved, and a buoyancy impact shear efficiency is improved, when emulsion with different depths is emulsified, the second guide hole 101 can keep the effective orientation and good opposite-flushing mixing effect with the first guide hole 91, and the buoyancy of the floating sheet 102 can be selected according to the material of the floating sheet and the torsion of the torsion spring under the actual condition;
example 2
The solvent-free ultrathin waterborne polyurethane mortar self-leveling coating comprises the following raw materials:
12 parts by weight of castor oil
1.5 parts by weight of pentaerythritol
1.5 parts by weight of trimethylolpropane
2 parts by weight of terephthalic acid
0.015 parts by weight of tetrabutyl titanate
2 parts by weight of Pick BYK-066N defoaming agent
3 parts by weight of diphenylmethane diisocyanate MDI-50
26 parts by weight of polymethylene polyphenyl isocyanate (PAPI)
30 parts by weight of white cement 525
1.5 parts by weight of polycarboxylate type water reducing agent CP1701X
6 parts by weight of calcium hydroxide
40 parts by weight of 50-100 mesh quartz sand
20 parts by weight of 40-70 mesh quartz sand
The preparation method comprises the following steps:
s1, adding polyhydric alcohol, dicarboxylic acid and a catalyst into a reaction kettle provided with a condensation water separator and a thermometer for reaction, introducing nitrogen for protection, heating to 160 ℃, and carrying out esterification polycondensation;
s2: in the reaction kettle of the step S1, measuring the acid value of the resin at intervals of 3h until the acid value of the resin is between 1.5mgKOH/g and 3mgKOH/g, and introducing cooling water to reduce the temperature inside the reaction kettle to 40 ℃;
s3, putting a certain amount of neutralizing agent NaOH into deionized water, neutralizing with the resin prepared in the step S2 after completely dissolving, then adding into an emulsifying shearing machine together, then adding a defoaming agent and an emulsifying agent, and fully emulsifying by adopting a 5000RPM emulsifying shearing machine to prepare polyol emulsion;
s4: adding diphenylmethane diisocyanate (MDI-50) and polymethylene polyphenyl isocyanate (PAPI) into a dry reaction kettle, regulating the speed to 400r/min, and stirring for 1h to obtain an isocyanate curing agent;
s5: adding white cement, polycarboxylate water reducing agent, calcium hydroxide and quartz stone into a mixer, mixing and dispersing for 1h to obtain powder;
s6: adding the polyol emulsion into an isocyanate curing agent in a mixer, regulating the speed to 900r/min, dispersing and mixing for 20s, then slowly adding the powder into the mixer, regulating the speed to 900r/min, mixing and dispersing for 2min to obtain the solvent-free ultrathin waterborne polyurethane mortar self-leveling coating;
example 3
The solvent-free ultrathin waterborne polyurethane mortar self-leveling coating comprises the following raw materials:
16 parts by weight of castor oil
2 parts by weight of terephthalic acid
0.01 part by weight of monobutyl tin oxide
2 parts by weight of Pick BYK-066N defoaming agent
3 parts by weight of toluene diisocyanate TDI-80
32 parts by weight of polymethylene polyphenyl isocyanate (PAPI)
30 parts by weight of white cement 525
1.5 parts by weight of polycarboxylate type water reducing agent CP1701X
6 parts by weight of calcium hydroxide
40 parts by weight of 50-100 mesh quartz sand
20 parts by weight of 40-70 mesh quartz sand
The preparation method comprises the following steps:
s1, adding polyhydric alcohol, dicarboxylic acid and a catalyst into a reaction kettle provided with a condensation water separator and a thermometer for reaction, introducing nitrogen for protection, heating to 175 ℃, and carrying out esterification polycondensation;
s2: in the reaction kettle of the step S1, measuring the acid value of the resin at intervals of 3h until the acid value of the resin is between 1.5mgKOH/g and 3mgKOH/g, and introducing cooling water to reduce the temperature inside the reaction kettle to 40 ℃; (ii) a
S3, putting a certain amount of neutralizing agent NaOH into deionized water, neutralizing with the resin prepared in the step S2 after completely dissolving, then adding into an emulsifying shearing machine together, then adding a defoaming agent and an emulsifying agent, and fully emulsifying by adopting a 5000RPM emulsifying shearing machine to prepare polyol emulsion;
s4: adding toluene diisocyanate (TDI-80) and polymethylene polyphenyl isocyanate (PAPI) into a dry reaction kettle, regulating the speed to 400r/min, and stirring for 1h to obtain an isocyanate curing agent;
s5: adding white cement, polycarboxylate water reducing agent, calcium hydroxide and quartz stone into a mixer, and mixing and dispersing for 1 hour to obtain powder;
s6: and (3) adding the polyol emulsion into an isocyanate curing agent in a mixer, regulating the speed to 900r/min, dispersing and mixing for 20s, then slowly adding the powder into the mixer, regulating the speed to 900r/min, mixing and dispersing for 2min to obtain the solvent-free ultrathin waterborne polyurethane mortar self-leveling coating.
JC/T2327-2015 waterborne polyurethane terrace is respectively adopted for the solvent-free ultrathin waterborne polyurethane mortar self-leveling coating prepared in the embodiments 1-3, and the construction thickness is 1.5mm. The results are shown in the following table.
Through the tests, it can be found that:
the castor oil modified polyol emulsion is used as the polyol emulsion, and is matched with a corresponding isocyanate curing agent and powder, when the construction thickness is 1.5mm, the castor oil modified polyol emulsion still has good leveling property, the appearance of a coating film is good, and the mechanical strength can reach the test standard of JC/T2327-2015 waterborne polyurethane terrace.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. A solvent-free ultrathin waterborne polyurethane mortar self-leveling coating is characterized in that: the paint is prepared from polyol emulsion, an isocyanate curing agent and powder, and particularly,
the polyol emulsion comprises the following raw materials in parts by weight: 10-20 parts of polyhydric alcohol, 0.5-2 parts of dicarboxylic acid, 0.01-0.03 part of catalyst, 1-2 parts of defoaming agent and 0.5-5 parts of emulsifier;
the isocyanate curing agent comprises the following raw materials in parts by weight: 0-3 parts of toluene diisocyanate, 0-3 parts of diphenylmethane diisocyanate and 26-32 parts of polymethylene polyphenyl isocyanate;
the powder material comprises the following raw materials in parts by weight: 28-32 parts of white cement, 1-2 parts of polycarboxylate water reducing agent, 5-9 parts of calcium hydroxide and 60-65 parts of quartz stone;
the mass ratio of the polyol emulsion, the isocyanate curing agent and the powder in the coating is 25:28:102.
2. the solvent-free ultrathin waterborne polyurethane mortar self-leveling coating as claimed in claim 1, wherein the self-leveling coating comprises: the hydroxyl value of the polyol emulsion is 160-360mgKOH/g, and the acid value is 1.5-3 mgKOH/g.
3. The solvent-free ultrathin waterborne polyurethane mortar self-leveling coating as claimed in claim 1, characterized in that: the isocyanate curing agent is prepared by mixing two or three of toluene diisocyanate, diphenylmethane diisocyanate and polymethylene polyphenyl isocyanate.
4. The solvent-free ultrathin waterborne polyurethane mortar self-leveling coating as claimed in claim 1, characterized in that: the polyalcohol comprises castor oil and one or more of trihydroxypropane, pentaerythritol, diethylene glycol, 1,4-butanediol and diethylene glycol, the dicarboxylic acid is one or more of adipic acid, terephthalic acid, sebacic anhydride and isophthalic acid, and the weight part of the castor oil in the polyalcohol emulsion is 40-60%.
5. The solvent-free ultrathin waterborne polyurethane mortar self-leveling coating as claimed in claim 1, characterized in that: the catalyst is one of tetrabutyl titanate, concentrated sulfuric acid and monobutyl tin oxide.
6. The solvent-free ultrathin waterborne polyurethane mortar self-leveling coating as claimed in claim 1, wherein the self-leveling coating comprises: the quartz sand is one or two of 20-40 mesh quartz stone, 40-70 mesh quartz stone and 50-100 mesh quartz stone.
7. The preparation method of the solvent-free ultrathin aqueous polyurethane mortar self-leveling coating according to any one of claims 1 to 6, characterized by comprising the following steps:
the preparation method comprises the following steps:
s1, adding polyhydric alcohol, dicarboxylic acid and a catalyst into a reaction kettle provided with a condensation water separator and a thermometer according to the weight part ratio relationship for reaction, introducing nitrogen for protection, heating to 140-210 ℃, and carrying out esterification polycondensation reaction;
s2: in the reaction kettle of the step S1, measuring the acid value of the resin at intervals of 3h until the acid value of the resin is between 1.5mgKOH/g and 3mgKOH/g, and introducing cooling water to reduce the temperature inside the reaction kettle to 40 ℃;
s3, putting a certain amount of neutralizing agent NaOH into deionized water, neutralizing with the resin prepared in the step S2 after completely dissolving, then adding the resin and the resin into an emulsifying shearing machine together, then adding a defoaming agent and an emulsifying agent according to the weight proportion relation, and fully emulsifying by adopting a 5000RPM emulsifying shearing machine to prepare polyol emulsion;
s4: adding Toluene Diisocyanate (TDI), diphenylmethane diisocyanate (MDI) and polymethylene polyphenyl isocyanate (PAPI) into a dry reaction kettle according to the weight part ratio, regulating the speed to 400r/min, and stirring for 1h to obtain an isocyanate curing agent;
s5: according to the weight ratio relationship, adding white cement, polycarboxylate water reducing agent, calcium hydroxide and quartz stone into a mixer, mixing and dispersing for 1h to obtain powder;
s6: according to the weight ratio, adding the polyol emulsion into an isocyanate curing agent in a mixer, regulating the speed to 900r/min, dispersing and mixing for 20s, then slowly adding the powder into the mixer, regulating the speed to 900r/min, mixing and dispersing for 2min to obtain the solvent-free ultrathin waterborne polyurethane mortar self-leveling coating;
the emulsifying shearing machine in the step S3 comprises a tank body (1), wherein an installation frame (2) is arranged in the tank body (1), a motor (3) is fixed at the top of the installation frame (2), the output end of the motor (3) is connected with a rotor shaft (6), and the rotor shaft (6) is positioned at the bottom of the installation frame (2);
still include stator shaft (4), stator shaft (4) are fixed in the bottom position of mounting bracket (2), and stator shaft (4) are located the outside of rotor shaft (6), and the bottom of stator shaft (4) is fixed with mounting panel (5), first blade (7) and shear plate (8) are installed to the bottom position of rotor shaft (6), and shear plate (8) are located first blade (7) below, and first blade (7) are located mounting panel (5) below, the below of mounting panel (5) is fixed with stator circle (9), and stator circle (9) are located the outside of first blade (7) and shear plate (8), the movable sleeve is equipped with movable cylinder (10) on stator shaft (4), and movable cylinder (10) are located the top of mounting panel (5), and the top edge in the movable cylinder (10) outside is fixed with kickboard (11), the inner wall of movable cylinder (10) is fixed with horizontal pole (12), and other through bearing mounting sleeve (13) of horizontal pole (12) install shear sleeve (13) and the shear plate (13) and second blade (8) below this horizontal pole (14) and shear plate (8) are located the second blade (8) below, and other horizontal pole (14) of this horizontal pole (8) are fixed with horizontal pole (12), installation cover (13) cover is established on rotor shaft (6), and the outside of rotor shaft (6) is provided with locating lever (15) to locating lever (15) slide to set up in constant head tank (16), and constant head tank (16) are seted up on installation cover (13) inner wall moreover, link up on the inner wall of a movable section of thick bamboo (10) and seted up second guide hole (101), and install through torsional spring elasticity pivot in second guide hole (101) and float piece (102) to second guide hole (101) downward sloping setting.
8. The preparation method of the solvent-free ultrathin waterborne polyurethane mortar self-leveling coating according to claim 7, characterized by comprising the following steps of: shear hole (81) have been seted up to the internal periphery of shear plate (8) through, and the top of shearing hole (81) is fixed with shearing net (82) to shear hole (81) are the design of arc slope structure, and the bottom of shearing hole (81) is loudspeaker form structural design moreover.
9. The preparation method of the solvent-free ultrathin waterborne polyurethane mortar self-leveling coating according to claim 7, characterized by comprising the following steps of: the stator ring (9) is internally provided with a first guide hole (91) at an equal angle, the first guide hole (91) and the second guide hole (101) are distributed oppositely, and the first blade (7) and the second blade (14) at the inner position of the stator ring (9) face opposite directions.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211338301.6A CN115873491A (en) | 2022-10-28 | 2022-10-28 | Solvent-free ultrathin waterborne polyurethane mortar self-leveling coating and preparation method thereof |
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| CN202211338301.6A CN115873491A (en) | 2022-10-28 | 2022-10-28 | Solvent-free ultrathin waterborne polyurethane mortar self-leveling coating and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206688580U (en) * | 2017-04-24 | 2017-12-01 | 湖南华康生物科技股份有限公司 | High-shear emulsifying material-compound tank |
| CN207169506U (en) * | 2017-08-30 | 2018-04-03 | 嘉兴固高日化有限公司 | Efficiently emulsification cutter |
| CN110591534A (en) * | 2019-10-11 | 2019-12-20 | 河北金达涂料有限公司 | Water-based ultrathin weather-resistant polyurethane mortar self-leveling coating and preparation method thereof |
| CN111662634A (en) * | 2020-06-24 | 2020-09-15 | 广东达尔新型材料有限公司 | Thin-coating type water-based anti-static polyurethane mortar floor coating and preparation method thereof |
-
2022
- 2022-10-28 CN CN202211338301.6A patent/CN115873491A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206688580U (en) * | 2017-04-24 | 2017-12-01 | 湖南华康生物科技股份有限公司 | High-shear emulsifying material-compound tank |
| CN207169506U (en) * | 2017-08-30 | 2018-04-03 | 嘉兴固高日化有限公司 | Efficiently emulsification cutter |
| CN110591534A (en) * | 2019-10-11 | 2019-12-20 | 河北金达涂料有限公司 | Water-based ultrathin weather-resistant polyurethane mortar self-leveling coating and preparation method thereof |
| CN111662634A (en) * | 2020-06-24 | 2020-09-15 | 广东达尔新型材料有限公司 | Thin-coating type water-based anti-static polyurethane mortar floor coating and preparation method thereof |
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