CN115012274A - Semi-prefabricated polyurethane runway and construction process thereof - Google Patents
Semi-prefabricated polyurethane runway and construction process thereof Download PDFInfo
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- CN115012274A CN115012274A CN202210825265.XA CN202210825265A CN115012274A CN 115012274 A CN115012274 A CN 115012274A CN 202210825265 A CN202210825265 A CN 202210825265A CN 115012274 A CN115012274 A CN 115012274A
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- polyurethane
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- zeolite powder
- prefabricated
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- 229920002635 polyurethane Polymers 0.000 title claims abstract description 126
- 239000004814 polyurethane Substances 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 230000008569 process Effects 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 95
- 229920001971 elastomer Polymers 0.000 claims abstract description 86
- 239000005060 rubber Substances 0.000 claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000010410 layer Substances 0.000 claims abstract description 36
- 239000002245 particle Substances 0.000 claims abstract description 33
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000002156 mixing Methods 0.000 claims abstract description 23
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 21
- 229920000570 polyether Polymers 0.000 claims abstract description 21
- 229920005862 polyol Polymers 0.000 claims abstract description 21
- 150000003077 polyols Chemical class 0.000 claims abstract description 21
- 125000005442 diisocyanate group Chemical group 0.000 claims abstract description 19
- 239000002344 surface layer Substances 0.000 claims abstract description 18
- 230000002745 absorbent Effects 0.000 claims abstract description 15
- 239000002250 absorbent Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 239000006260 foam Substances 0.000 claims abstract description 12
- 239000003381 stabilizer Substances 0.000 claims abstract description 12
- 239000003054 catalyst Substances 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 10
- 239000000049 pigment Substances 0.000 claims abstract description 10
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 53
- 239000000843 powder Substances 0.000 claims description 53
- 229910021536 Zeolite Inorganic materials 0.000 claims description 26
- 239000002002 slurry Substances 0.000 claims description 26
- 239000010457 zeolite Substances 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 20
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 15
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 14
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 14
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 12
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000000047 product Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 5
- 239000008096 xylene Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- 239000012065 filter cake Substances 0.000 claims description 3
- 238000000967 suction filtration Methods 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- LVYXGGYDIJLZLS-UHFFFAOYSA-N O.CCO[Si](OCC)OCC Chemical compound O.CCO[Si](OCC)OCC LVYXGGYDIJLZLS-UHFFFAOYSA-N 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 2
- 230000035939 shock Effects 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 2
- 230000002277 temperature effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 30
- 239000011159 matrix material Substances 0.000 description 16
- 238000002360 preparation method Methods 0.000 description 14
- 238000010521 absorption reaction Methods 0.000 description 12
- 238000009792 diffusion process Methods 0.000 description 10
- 239000008187 granular material Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000006096 absorbing agent Substances 0.000 description 8
- 239000000806 elastomer Substances 0.000 description 8
- 238000005187 foaming Methods 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229920005830 Polyurethane Foam Polymers 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012948 isocyanate Substances 0.000 description 3
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 3
- 150000002513 isocyanates Chemical class 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000011496 polyurethane foam Substances 0.000 description 3
- 238000009417 prefabrication Methods 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical group [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000004872 foam stabilizing agent Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 229940043237 diethanolamine Drugs 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- ADJMNWKZSCQHPS-UHFFFAOYSA-L zinc;6-methylheptanoate Chemical group [Zn+2].CC(C)CCCCC([O-])=O.CC(C)CCCCC([O-])=O ADJMNWKZSCQHPS-UHFFFAOYSA-L 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
-
- 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
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/009—Use of pretreated compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
-
- 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
- C08G2350/00—Acoustic or vibration damping material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The application relates to the technical field of polyurethane materials, and particularly discloses a semi-prefabricated polyurethane runway and a construction process thereof. The semi-prefabricated polyurethane track comprises a base layer and a surface layer, wherein the base layer is formed by laying prefabricated polyurethane coiled materials, the prefabricated polyurethane coiled materials are formed by mixing A materials and B materials and then baking in a mold, and the surface layer is formed by mixing A materials and B materials and then pouring, baking and curing the mixture on the surface of the base layer; the material A comprises the following components in parts by weight: 30-50 parts of polyether polyol, 4-6 parts of azobisisobutyronitrile, 2.4-2.8 parts of a foam stabilizer, 30-40 parts of a filler, 4-8 parts of a pigment, 0.6-1.2 parts of a catalyst, 0.4-0.8 part of water and 3.6-4.0 parts of a water absorbent; the B material comprises the following components in parts by weight: 16-20 parts of diisocyanate and 6-10 parts of rubber raw rubber particles. This application has reduced the residual stress of foundation layer, has reduced foundation layer and surface course and has appeared the possibility of separation under the difference in temperature effect round the clock, has improved the shock resistance of polyurethane base member and half prefabricated polyurethane runway simultaneously.
Description
Technical Field
The application relates to the technical field of polyurethane materials, in particular to a semi-prefabricated polyurethane track and a construction process thereof.
Background
The polyurethane material has excellent wear resistance and elasticity and good chemical stability, and is an ideal material for paving sports grounds such as court and runway. At present, the method for paving sports ground by polyurethane material mainly comprises a cast-in-place method and a prefabrication method, wherein the cast-in-place method is characterized in that all components of polyurethane are mixed and then are directly poured in a construction area, and the prefabrication method is characterized in that polyurethane is solidified in advance to be made into coiled materials, and then the coiled materials are adhered to the construction area by using an adhesive.
Chinese patent with publication number CN112341596B discloses a prefabricated polyurethane foaming elastomer material, which consists of a component A and a component B; the component A comprises the following components in percentage by mass: 30-40% of polyether polyol, 5-7% of polymer polyol, 0.2-0.5% of foam stabilizer, 30-40% of talcum powder, 3-10% of color green, 1-5% of fumed silica, 0.5-2% of diethanol amine, 2-4% of ethylene glycol, 0.4-0.7% of water, 0.6-1.2% of catalyst and the component B is modified MDI; A. the proportion of the component B is calculated according to the isocyanate index, and the isocyanate index is 0.7-0.8; the foam stabilizer is compounded by silicon foam stabilizers and non-silicon foam stabilizers according to the mass ratio of 1: 1. The prefabricated polyurethane foaming elastomer material is prepared by the following method: mixing all the raw materials of the component A uniformly, then mixing the component A and the component B in proportion, injecting the mixture into a plastic court production mold, controlling the mold temperature at 20-30 ℃, opening the mold for molding within 20-30min, and cutting the mixture into the required thickness as required to obtain the prefabricated polyurethane foaming elastomer material
In view of the above-mentioned related arts, the inventor believes that a sports field made of polyurethane is generally of a multilayer structure, and the residual stress of the polyurethane foam elastomer material is difficult to completely eliminate within a mold temperature range set by the related art, and a layering phenomenon is likely to occur after the sports field made of the polyurethane foam elastomer material is used for a long time under a condition of a large day-night temperature difference. When the mold temperature in the related art is increased to eliminate the residual stress, micro bubbles in the polyurethane slurry are easily diffused out of the polyurethane slurry, so that the impact resistance of the polyurethane foamed elastomer material is affected.
Disclosure of Invention
For a sports field made of polyurethane foaming elastomer materials in the related technology, the phenomenon of layering is easy to occur after the sports field is in service for a long time under the condition of large temperature difference between day and night, and the phenomenon of layering is easy to occur after the sports field is in service for a long time under the condition of large temperature difference between day and night. When the mold temperature is increased to eliminate residual stress, micro bubbles in the polyurethane slurry are easy to diffuse out of the polyurethane base, so that the impact resistance of the polyurethane foaming elastomer material is affected. In order to improve the defect, the application provides a semi-prefabricated polyurethane runway and a construction process thereof.
In a first aspect, the present application provides a semi-prefabricated polyurethane runway, which adopts the following technical scheme:
a semi-prefabricated polyurethane track comprises a base layer and a surface layer, wherein the base layer is formed by laying prefabricated polyurethane coiled materials, the prefabricated polyurethane coiled materials are formed by mixing A materials and B materials and then baking in a mold, and the surface layer is formed by mixing A materials and B materials and then pouring, baking and curing the mixture on the surface of the base layer; the material A comprises the following components in parts by weight: 30-50 parts of polyether polyol, 4-6 parts of azobisisobutyronitrile, 2.4-2.8 parts of a foam stabilizer, 30-40 parts of a filler, 4-8 parts of a pigment, 0.6-1.2 parts of a catalyst, 0.4-0.8 part of water and 3.6-4.0 parts of a water absorbent; the material B comprises the following components in parts by weight: 16-20 parts of diisocyanate and 6-10 parts of rubber raw rubber particles.
By adopting the technical scheme, the polyurethane coiled material obtained by the prefabrication method is used as the base layer, and the surface layer is formed on the surface of the base layer in a cast-in-place mode, so that the polyurethane track is obtained. The base layer is molded under the baking condition, and compared with the related technology, the base layer can better eliminate residual stress, so that the possibility of layering of the polyurethane track after long-term service under the condition of large day and night temperature difference is reduced.
When the material A and the material B are mixed into polyurethane material and baked, the polyether glycol and the diisocyanate are subjected to crosslinking reaction, and simultaneously, part of water reacts with the diisocyanate to generate micro bubbles, and the other part of water is absorbed by the water absorbent. When the free water in the polyurethane slurry is consumed by foaming, the water in the water absorbing agent diffuses into the polyurethane slurry. At the moment, the fluidity of the polyurethane slurry is reduced due to the crosslinking of the polyether polyol and the diisocyanate, and the resistance of the microbubbles is increased when the microbubbles move, so that the microbubbles are not easy to diffuse out of the polyurethane slurry, the retention of the microbubbles is facilitated, the content of the microbubbles in the polyurethane matrix is increased, and the improvement of the impact resistance of the polyurethane matrix and the semi-prefabricated polyurethane track is facilitated.
When the polyether polyol and the diisocyanate are subjected to a crosslinking reaction, a large number of hydrophilic-hydrophobic interfaces are generated between the rubber raw rubber particles in the polyurethane slurry and the polyether polyol, so that micro-bubble attachment is facilitated, and nitrogen generated after the azodiisobutyronitrile is heated and decomposed forms micro-bubbles. The microbubbles can be attached to the surfaces of the rubber raw rubber particles, and the crosslinked product of the polyether polyol and the diisocyanate has a fixing effect on the microbubbles on the surfaces of the rubber raw rubber particles, so that the content of the microbubbles in the polyurethane matrix is finally increased, and the improvement of the shock resistance of the polyurethane matrix and the semi-prefabricated polyurethane track is facilitated.
Preferably, the material A comprises the following components in parts by weight: 35-55 parts of polyether polyol, 4.5-5.5 parts of azobisisobutyronitrile, 2.5-2.7 parts of foam stabilizer, 32-38 parts of filler, 5-7 parts of pigment, 0.8-1.0 part of catalyst, 0.5-0.7 part of water and 3.7-3.9 parts of water absorbent.
By adopting the technical scheme, the formula of the material A is optimized, and the improvement of the shock resistance of the polyurethane matrix and the semi-prefabricated polyurethane track is facilitated.
Preferably, the component of the material B also comprises xylene and styrene.
Through adopting above-mentioned technical scheme, xylene can make rubber crude rubber granule swelling, and then makes the chain segment on rubber crude rubber granule surface stretch, and styrene can take place the crosslinked with rubber crude rubber granule under the effect of azo-bis-isobutyronitrile to produce netted crosslinked structure on rubber crude rubber granule surface, thereby strengthened the adsorption effect of rubber crude rubber granule to the microbubble, reduced the diffusion loss of microbubble.
Preferably, the water absorbent is zeolite powder or modified zeolite powder, and the modified zeolite powder is zeolite powder with vinyl grafted on the surface.
By adopting the technical scheme, the zeolite powder and the modified zeolite powder can both play a role in water absorption, wherein the vinyl grafted on the surface of the modified zeolite powder can be crosslinked with the rubber raw rubber particles under the action of the azobisisobutyronitrile. After the modified zeolite powder releases moisture, microbubbles generated by the reaction of water and isocyanate groups are more easily captured by the rubber raw rubber particles, so that the diffusion loss of the microbubbles is reduced.
Preferably, the modified zeolite powder is obtained by drying zeolite powder impregnated with a modifying liquid, and the components of the modifying liquid comprise water and vinyltriethoxysilane.
By adopting the technical scheme, in the modification solution, the vinyltriethoxysilane is coupled with the zeolite powder, and the segment with vinyl is grafted on the surface of the zeolite powder through dehydration of silanol group, so that the modified zeolite powder is obtained.
Preferably, the component of the modifying liquid also comprises acrylic acid.
By adopting the technical scheme, the acrylic acid can promote the hydrolysis of the silane coupling agent, the coupling effect of the silane coupling agent on the zeolite powder is favorably improved, and meanwhile, the acrylic acid can be adsorbed on the surface of the zeolite powder, so that a hydrophilic-hydrophobic interface is generated on the surface of the zeolite powder, the adsorption effect of the zeolite powder on micro-bubbles is improved, and the diffusion loss of the micro-bubbles is favorably reduced. In addition, the acrylic acid adsorbed on the zeolite powder can be crosslinked with the rubber raw rubber particles under the action of the azodiisobutyronitrile, so that the adsorption of the rubber raw rubber particles on microbubbles is facilitated.
Preferably, the component of the modifying liquid also comprises gamma-aminopropyl triethoxysilane.
By adopting the technical scheme, the gamma-aminopropyltriethoxysilane can graft an organic chain segment containing amino on the surface of the zeolite powder, the amino can be crosslinked with diisocyanate, and a crosslinked product of the amino and the diisocyanate can play a role in fixing micro-bubbles on the surface of the modified zeolite powder, so that the diffusion loss of the micro-bubbles is reduced.
Preferably, the modified zeolite powder is prepared by the following method:
(1) uniformly mixing vinyl triethoxysilane, gamma-aminopropyl triethoxysilane, acrylic acid and water to obtain a modified solution;
(2) and uniformly mixing the zeolite powder and the modified liquid to obtain a mixed liquid, standing the mixed liquid for 1-2 hours, then performing suction filtration, performing vacuum drying on the obtained filter cake, and crushing the dried product to obtain the modified zeolite powder.
By adopting the technical scheme, the preparation method comprises the steps of preparing the vinyltriethoxysilane, the gamma-aminopropyltriethoxysilane, the acrylic acid and water into the modified liquid, and then treating the zeolite powder by using the modified liquid. In the treatment process, the hydrolysis of the vinyltriethoxysilane and the gamma-aminopropyltriethoxysilane is accelerated by the acrylic acid, and the vinyltriethoxysilane and the gamma-aminopropyltriethoxysilane are coupled with the zeolite powder to obtain the modified zeolite powder.
Preferably, the weight ratio of the vinyltriethoxysilane to the gamma-aminopropyltriethoxysilane in the modifying liquid is (1.2-1.6): 1.
by adopting the technical scheme, the weight ratio of the vinyltriethoxysilane to the gamma-aminopropyltriethoxysilane in the modification liquid is optimized, which is beneficial to improving the content of microbubbles in the polyurethane matrix.
In a second aspect, the application provides a construction process of a semi-prefabricated polyurethane runway, which adopts the following technical scheme.
A construction process of a semi-prefabricated polyurethane runway comprises the following steps:
(1) uniformly mixing polyether polyol, azodiisobutyronitrile, a foam stabilizer, a filler, a pigment, a catalyst, water and a water absorbent to obtain a material A; uniformly mixing diisocyanate and rubber raw rubber particles to obtain a material B;
(2) uniformly mixing the material A and the material B to obtain polyurethane slurry;
(3) adding the polyurethane slurry into a mold, curing for 20-30min at 70-80 ℃, opening the mold, rolling to obtain a prefabricated polyurethane coiled material, and adhering the prefabricated polyurethane coiled material to a construction area by using polyurethane glue to obtain a base layer;
(4) and pouring the mixture of the material A and the material B on the surface of the base layer, and curing the mixture at 70-80 ℃ for 20-30min to obtain the surface layer.
By adopting the technical scheme, the material A and the material B are mixed to obtain polyurethane slurry, then the prefabricated polyurethane coiled material is obtained through baking, curing and rolling, and the residual stress is fully removed in the baking and curing process. Then, the construction of the foundation layer is carried out by taking the prefabricated polyurethane coiled material as the raw material, then the material A and the material B are mixed again on the surface of the foundation layer to obtain polyurethane slurry, and the polyurethane slurry is adopted for carrying out the construction of the surface layer. In the process of surface layer curing, the residual stress of the surface layer is eliminated by baking and curing, and the residual stress of the base layer is also eliminated, so that the possibility of mutual separation of the base layer and the surface layer is reduced.
In summary, the present application has the following beneficial effects:
1. according to the application, the polyurethane coiled material obtained by a prefabricating method is used as a base layer, and then a surface layer is formed on the surface of the base layer in a cast-in-place mode, so that the polyurethane track is obtained. The base layer is formed under the baking condition, and the surface layer is formed directly on site, so that compared with the related technology, the residual stress can be better eliminated, and the possibility of layering of the polyurethane track after long-term service under the condition of large day and night temperature difference is reduced. In the process of curing the polyurethane slurry, the water absorbent absorbs water firstly and releases water, the formation of micro bubbles is delayed by delaying the reaction of water and isocyanate groups, the diffusion loss of the micro bubbles is reduced, the azo-bis-isobutyronitrile additionally generates the micro bubbles, and the rubber raw rubber particles adsorb the micro bubbles, so that the content of the micro bubbles in the polyurethane matrix is increased, and the improvement of the shock resistance of the polyurethane matrix and the semi-prefabricated polyurethane track is facilitated.
2. The preferable B material's component still includes xylol and styrene in this application, xylol can make the swelling of rubber crude rubber granule, the back is swelled to rubber crude rubber granule, styrene takes place the cross-linking with rubber crude rubber granule under the effect of azo-bis-isobutyronitrile to at the rubber crude rubber granule surface production netted crosslinked structure, strengthened the adsorption effect of rubber crude rubber granule to the microbubble, reduced the diffusion loss of microbubble, help improving the shock resistance of polyurethane matrix and semi-prefabricated polyurethane runway.
3. According to the method, the material A and the material B are mixed to obtain polyurethane slurry, then the prefabricated polyurethane coiled material is obtained through baking, curing and rolling, and the residual stress is fully removed in the baking and curing process. Then, the construction of the foundation layer is carried out by taking the prefabricated polyurethane coiled material as the raw material, then the material A and the material B are mixed again on the surface of the foundation layer to obtain polyurethane slurry, and the polyurethane slurry is adopted to carry out the construction of the surface layer, so that the semi-prefabricated polyurethane track is obtained.
Detailed Description
The present application will be described in further detail with reference to examples, preparations and comparative examples, and all of the starting materials mentioned in the present application are commercially available.
Preparation example of modified Zeolite powder
Preparation example 1 is described below as an example.
Preparation example 1
In the preparation example, the modified zeolite powder is prepared according to the following method:
(1) uniformly mixing 8kg of vinyltriethoxysilane with 50kg of water to obtain a modified solution;
(2) and 5kg of zeolite powder with the average particle size of 20 mu m and 30kg of modified liquid are uniformly mixed to obtain a mixed solution, the mixed solution is stood for 2 hours and then is subjected to suction filtration, the obtained filter cake is subjected to vacuum drying, and the dried product is crushed to obtain the modified zeolite powder.
Preparation example 2
The present production example differs from production example 1 in that in step (1) of producing a modified zeolite powder, the components of the modification liquid further include 4kg of acrylic acid.
Preparation example 3
The difference between the preparation example and the preparation example 2 is that in the step (1) of preparing the modified zeolite powder, the components of the modification liquid also comprise gamma-aminopropyltriethoxysilane, and the weight ratio of the vinyl triethoxysilane to the gamma-aminopropyltriethoxysilane is 1: 1.
preparation examples 3 to 7
As shown in Table 1, production examples 3 to 7 were different in that the weight ratio of vinyltriethoxysilane to gamma-aminopropyltriethoxysilane in step (1) of producing a modified zeolite powder was different.
TABLE 1
Examples
Examples 1 to 5
The following description will be given by taking example 1 as an example.
Example 1
In this embodiment, material a includes the following components: 30kg of polyether polyol, 4kg of azodiisobutyronitrile, 2.4kg of foam stabilizer, 30kg of filler, 4kg of pigment, 0.6kg of catalyst, 0.4kg of water and 3.6kg of water absorbent. The B material comprises the following components in parts by weight: 16kg of diisocyanate and 6kg of rubber raw rubber particles.
A. The proportion of the component B is calculated according to the isocyanate index which is 0.85; the polyether polyol is prepared by mixing polyether polyol 330N, polyether polyol 220 and polyether polyol 210 according to the weight ratio of 11:6:3, wherein diisocyanate is MDI-50, a foam stabilizer is coconut oil fatty acid diethanolamide, a filler is silica fume, a pigment is iron oxide red, a catalyst is zinc isooctanoate, a water absorbent is zeolite powder with the average particle size of 380 mu m, and rubber raw rubber particles are styrene-butadiene rubber raw rubber particles with the average particle size of 460 mu m.
In this embodiment, the semi-prefabricated polyurethane track is constructed according to the following steps:
(1) uniformly mixing polyether polyol, azodiisobutyronitrile, a foam stabilizer, a filler, a pigment, a catalyst, water and a water absorbent to obtain a material A; uniformly mixing diisocyanate and rubber raw rubber particles to obtain a material B;
(2) uniformly mixing the material A and the material B to obtain polyurethane slurry;
(3) pouring the polyurethane slurry into a mold, wherein the average pouring thickness is 6mm, curing for 25min under the baking condition of 75 ℃, rolling after mold opening to obtain a prefabricated polyurethane coiled material, using the residual polyurethane slurry as polyurethane glue, adhering the prefabricated polyurethane coiled material to a construction area, and naturally curing the polyurethane glue to obtain a base layer;
(4) and (3) bonding the base layer to the construction area by using a polyurethane adhesive, then pouring a mixture of the material A and the material B on the surface of the base layer, wherein the average pouring thickness is 2mm, and curing the mixture at 75 ℃ for 25min to obtain the surface layer.
As shown in Table 2, examples 1 to 5 differ mainly in the ratio of raw materials
TABLE 2
Example 6
This example differs from example 5 in that the composition of feed B also included 3kg of xylene and 3kg of styrene.
Example 7
This example is different from example 6 in that the water absorbing agent is the modified zeolite powder of production example 1.
Examples 8 to 13
As shown in table 3, examples 8 to 13 are different from example 7 in the preparation example of the modified zeolite powder.
TABLE 3
Comparative example
Comparative example 1
Refer to the polyurethane track prepared by the preparation method of example 1 of the chinese patent with publication number CN 112341596B.
Comparative example 2
This comparative example differs from example 3 in that the components of material a do not include azobisisobutyronitrile.
Comparative example 3
This comparative example differs from example 3 in that the composition of material a does not include a water-absorbing agent.
Comparative example 4
This comparative example differs from example 3 in that the composition of material a does not include a water absorbing agent and the amount of water used is increased from 0.6kg to 0.9 kg.
Comparative example 5
This comparative example differs from example 3 in that the component of the B material does not include rubber crumb particles.
Comparative example 6
This comparative example differs from example 3 in that both the pre-formed polyurethane web and the facing were cured at 25 ℃.
Performance testing method sample preparation: according to the regulations of GB 36246 and 2018 synthetic material surface sports ground in middle and primary schools, a polyurethane runway sample with the thickness of 300mm multiplied by 400mm multiplied by actual thickness is prepared.
First, the stripping condition under the condition of day and night temperature difference is simulated
In order to accelerate the detection time, the temperature difference adopted in the detection is larger than the actual environment temperature difference, so that the test result is more obvious, and the initial humidity of the test is 75%. During testing, a sample is placed in a closed environment, and is subjected to cold and hot circulation treatment in a cycle of 24 hours, wherein the process of a complete cycle is as follows:
(1) heating from-20 ℃ to 40 ℃ at a constant speed for 2 h;
(2) keeping the temperature at 40 ℃ for 10 h;
(3) cooling from 40 deg.C to-20 deg.C at constant speed for 2 h;
(4) keeping the temperature at minus 20 ℃ for 10h, and finishing one period.
The samples of each example and comparative example were subjected to a heating-cooling cycle in accordance with the cycle history described above, and the time at which the polyurethane foam elastic layer and the polyurethane reinforcing layer of comparative example 1 were peeled was observed, and the time at which the base layer and the top layer of the samples other than comparative example 1 were peeled was observed (the recorded time was rounded off to a fraction of less than 1 hour), and the results are shown in Table 4.
Second, impact resistance
The test results of the impact absorption rate of the test sample are shown in Table 4 by referring to GB 36246-2018 synthetic material surface sports field in middle and primary schools.
TABLE 4
As can be seen by combining examples 1-5 with comparative example 1 and combining Table 4, the peeling time of examples 1-5 is later than that of comparative example 1, and the impact absorption rate is higher than that of comparative example 1, which shows that the application has the effect of eliminating residual stress by increasing the curing temperature, and the content of micro bubbles in the base layer and the surface layer is relatively higher, so that the resistance of the polyurethane track to high and low temperature cycles is increased, the peeling of the polyurethane track is reduced, and the impact resistance of the polyurethane track is improved.
It can be seen from the combination of example 3 and comparative example 2 and table 4 that, when the components of material a do not include a water absorbing agent, the peeling time measured in comparative example 2 is earlier than that in example 3, and the impact absorption rate is lower than that in example 3, indicating that in example 3, nitrogen generated after the thermal decomposition of azobisisobutyronitrile forms microbubbles, increasing the content of microbubbles in the polyurethane matrix, reducing the peeling of the polyurethane track, and also improving the impact resistance of the polyurethane track.
It can be seen by combining example 3 and comparative example 3 with table 4 that, when the components of material a do not include a water absorbing agent, the peeling time measured in comparative example 3 is earlier than that in example 3 and the impact absorption rate is lower than that in example 3, indicating that in example 3, moisture in the water absorbing agent diffuses into the polyurethane slurry after free water in the polyurethane slurry is consumed due to foaming. At the moment, the fluidity of the polyurethane slurry is reduced due to the crosslinking of the polyether polyol and the diisocyanate, and the resistance of the microbubbles is increased when the microbubbles move, so that the microbubbles are not easy to diffuse out of the polyurethane slurry, the retention of the microbubbles is facilitated, the content of the microbubbles in the polyurethane matrix is increased, and the improvement of the impact resistance of the polyurethane matrix and the semi-prefabricated polyurethane track is facilitated.
It can be seen by combining example 3 and comparative example 4 with table 4 that when the components of material a do not include a water absorbing agent, but the amount of water used is increased, the time at which peeling occurs measured in comparative example 3 approaches that of example 3, and the impact absorption rate approaches that of example 3, indicating that in comparative example 4, the amount of generated microbubbles increases with an increase in the amount of water used, making up for the loss of microbubbles.
Combining example 3 and comparative example 5 with table 4, it can be seen that, when the components of material B do not include rubber raw rubber particles, the peeling time measured in comparative example 5 is earlier than that in example 3, and the impact absorption rate is lower than that in example 3, indicating that in example 3, micro bubbles can be attached to the surface of the rubber raw rubber particles, and the cross-linked product of polyether polyol and diisocyanate fixes the micro bubbles on the surface of the rubber raw rubber particles, and finally the content of the micro bubbles in the polyurethane matrix is increased, which contributes to improving the impact resistance of the polyurethane matrix and the semi-prefabricated polyurethane track.
It can be seen by combining example 3 and comparative example 6 and table 4 that, when the temperature during curing is 25 ℃, the peeling time measured in comparative example 6 is earlier than that in example 3, and the impact absorption rate is higher than that in example 3, which shows that the residual stress can be better eliminated by molding under the baking condition, so that the possibility of layering of the polyurethane track after long-term service under the condition of large day-night temperature difference is reduced, and the water absorbent is favorable for retaining micro-bubbles, improves the content of the micro-bubbles in the polyurethane matrix and is favorable for improving the impact resistance of the polyurethane matrix and the semi-prefabricated polyurethane track.
It can be seen by combining example 3 and example 6 and table 4 that the time of occurrence of peeling measured in example 6 is later than that in example 3, and the impact absorption rate is higher than that in example 3, which shows that xylene can swell rubber raw rubber particles, so that chain segments on the surfaces of the rubber raw rubber particles are stretched, styrene can be crosslinked with the rubber raw rubber particles under the action of azobisisobutyronitrile, and a network-shaped crosslinked structure is generated on the surfaces of the rubber raw rubber particles, so that the adsorption effect of the rubber raw rubber particles on microbubbles is enhanced, and the diffusion loss of the microbubbles is reduced.
Combining example 6, example 7 and table 4, it can be seen that the time for peeling-off measured in example 7 is later than that in example 6, and the impact absorption rate is higher than that in example 6, indicating that the vinyl group grafted on the surface of the modified zeolite powder can be crosslinked with the rubber raw rubber particles under the action of azobisisobutyronitrile. After the modified zeolite powder releases water, micro-bubbles generated by the reaction of water and isocyanate groups are more easily captured by the rubber raw rubber particles, so that the diffusion loss of the micro-bubbles is reduced.
Combining example 7, example 8 and table 4, it can be seen that the time for stripping in example 8 is later than that in example 7, and the impact absorption rate is higher than that in example 7, which indicates that acrylic acid can be adsorbed on the surface of zeolite powder, so that a hydrophilic-hydrophobic interface is generated on the surface of zeolite powder, the adsorption effect of zeolite powder on microbubbles is improved, and the diffusion loss of microbubbles is reduced. In addition, the acrylic acid adsorbed on the zeolite powder can be crosslinked with the rubber raw rubber particles under the action of the azodiisobutyronitrile, so that the adsorption of the rubber raw rubber particles on microbubbles is facilitated.
Combining examples 9-13 and 8 and combining table 4, it can be seen that the time for stripping of examples 9-13 is later than that of example 8, and the impact absorption rate is higher than that of example 8, which shows that γ -aminopropyltriethoxysilane can graft an organic segment containing amino groups on the surface of zeolite powder, and the amino groups can crosslink with diisocyanate, and the crosslinked product of the amino groups and diisocyanate can fix the microbubbles on the surface of modified zeolite powder, thereby reducing the diffusion loss of the microbubbles.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. A semi-prefabricated polyurethane track is characterized by comprising a base layer and a surface layer, wherein the base layer is formed by laying prefabricated polyurethane coiled materials, the prefabricated polyurethane coiled materials are formed by mixing A materials and B materials and then baking in a mold, and the surface layer is formed by mixing A materials and B materials and then pouring, baking and curing on the surface of the base layer; the material A comprises the following components in parts by weight: 30-50 parts of polyether polyol, 4-6 parts of azobisisobutyronitrile, 2.4-2.8 parts of a foam stabilizer, 30-40 parts of a filler, 4-8 parts of a pigment, 0.6-1.2 parts of a catalyst, 0.4-0.8 part of water and 3.6-4.0 parts of a water absorbent; the material B comprises the following components in parts by weight: 16-20 parts of diisocyanate and 6-10 parts of rubber raw rubber particles.
2. A semi-prefabricated polyurethane track according to claim 1, wherein said material a comprises the following components in parts by weight: 35-55 parts of polyether polyol, 4.5-5.5 parts of azobisisobutyronitrile, 2.5-2.7 parts of foam stabilizer, 32-38 parts of filler, 5-7 parts of pigment, 0.8-1.0 part of catalyst, 0.5-0.7 part of water and 3.7-3.9 parts of water absorbent.
3. A semi-prefabricated polyurethane track according to claim 1 wherein the composition of said B-stock further comprises xylene and styrene.
4. The semi-prefabricated polyurethane track according to claim 1, characterized in that the water absorbent is zeolite powder or modified zeolite powder, and the modified zeolite powder is zeolite powder with vinyl grafted on the surface.
5. The semi-preformed polyurethane track as claimed in claim 4, wherein the modified zeolite powder is obtained by drying zeolite powder impregnated with a modifying liquid, the components of the modifying liquid including water and vinyltriethoxysilane.
6. The semi-preformed polyurethane track of claim 5, wherein the components of the modifying fluid further comprise acrylic acid.
7. The semi-prefabricated polyurethane track of claim 5 wherein the components of said modifying fluid further comprise gamma-aminopropyltriethoxysilane.
8. The semi-prefabricated polyurethane track of claim 7, wherein the modified zeolite powder is prepared by the following method:
(1) uniformly mixing vinyl triethoxysilane, gamma-aminopropyl triethoxysilane, acrylic acid and water to obtain a modified solution;
(2) and uniformly mixing the zeolite powder and the modified liquid to obtain a mixed liquid, standing the mixed liquid for 1-2 hours, then performing suction filtration, performing vacuum drying on the obtained filter cake, and crushing the dried product to obtain the modified zeolite powder.
9. The semi-prefabricated polyurethane track of claim 8, wherein the weight ratio of vinyltriethoxysilane to gamma-aminopropyltriethoxysilane in said modifying liquid is (1.2-1.6): 1.
10. a process for constructing a semi-prefabricated polyurethane runway according to any of claims 1-9, characterized in that it comprises the following steps:
(1) uniformly mixing polyether polyol, azodiisobutyronitrile, a foam stabilizer, a filler, a pigment, a catalyst, water and a water absorbent to obtain a material A; uniformly mixing diisocyanate and rubber raw rubber particles to obtain a material B;
(2) uniformly mixing the material A and the material B to obtain polyurethane slurry;
(3) adding the polyurethane slurry into a mold, curing for 20-30min at 70-80 ℃, opening the mold, rolling to obtain a prefabricated polyurethane coiled material, and adhering the prefabricated polyurethane coiled material to a construction area by using polyurethane glue to obtain a base layer;
(4) and pouring the mixture of the material A and the material B on the surface of the base layer, and curing the mixture at 70-80 ℃ for 20-30min to obtain the surface layer.
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