CN113845871B - Double-component polyurethane rubber repair adhesive and preparation method thereof - Google Patents
Double-component polyurethane rubber repair adhesive and preparation method thereof Download PDFInfo
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- CN113845871B CN113845871B CN202110969358.5A CN202110969358A CN113845871B CN 113845871 B CN113845871 B CN 113845871B CN 202110969358 A CN202110969358 A CN 202110969358A CN 113845871 B CN113845871 B CN 113845871B
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- 239000000853 adhesive Substances 0.000 title claims abstract description 30
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 229920003225 polyurethane elastomer Polymers 0.000 title claims description 21
- 230000008439 repair process Effects 0.000 title claims description 21
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 15
- 229920000570 polyether Polymers 0.000 claims abstract description 15
- 229920005862 polyol Polymers 0.000 claims abstract description 15
- 150000003077 polyols Chemical class 0.000 claims abstract description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 14
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 25
- 229920000178 Acrylic resin Polymers 0.000 claims description 24
- 239000004925 Acrylic resin Substances 0.000 claims description 24
- 239000004417 polycarbonate Substances 0.000 claims description 24
- 229920000515 polycarbonate Polymers 0.000 claims description 24
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000003963 antioxidant agent Substances 0.000 claims description 14
- 230000003078 antioxidant effect Effects 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 239000005056 polyisocyanate Substances 0.000 claims description 12
- 229920001228 polyisocyanate Polymers 0.000 claims description 12
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 10
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical group CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 10
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 10
- 150000002009 diols Chemical class 0.000 claims description 10
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 10
- 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 description 9
- 239000000178 monomer Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical group CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 8
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 229920002545 silicone oil Polymers 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- RFSCGDQQLKVJEJ-UHFFFAOYSA-N 2-methylbutan-2-yl benzenecarboperoxoate Chemical compound CCC(C)(C)OOC(=O)C1=CC=CC=C1 RFSCGDQQLKVJEJ-UHFFFAOYSA-N 0.000 claims description 4
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 2
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 2
- 239000002956 ash Substances 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 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 claims description 2
- 239000010881 fly ash Substances 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000010445 mica Substances 0.000 claims description 2
- 229910052618 mica group Inorganic materials 0.000 claims description 2
- 239000004005 microsphere Substances 0.000 claims description 2
- 239000010451 perlite Substances 0.000 claims description 2
- 235000019362 perlite Nutrition 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 239000001038 titanium pigment Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 abstract description 12
- 239000004814 polyurethane Substances 0.000 abstract description 11
- 229920001971 elastomer Polymers 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 5
- 239000011324 bead Substances 0.000 abstract description 3
- 230000032683 aging Effects 0.000 abstract description 2
- 238000004132 cross linking Methods 0.000 abstract description 2
- 239000004816 latex Substances 0.000 abstract 3
- 229920000126 latex Polymers 0.000 abstract 3
- 229920001084 poly(chloroprene) Polymers 0.000 abstract 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract 1
- 239000002318 adhesion promoter Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 239000003085 diluting agent Substances 0.000 abstract 1
- 239000003063 flame retardant Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000005266 side chain polymer Substances 0.000 abstract 1
- 239000013008 thixotropic agent Substances 0.000 abstract 1
- 229920001451 polypropylene glycol Polymers 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 229920001223 polyethylene glycol Polymers 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000002202 Polyethylene glycol Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- LGLNTUFPPXPHKF-UHFFFAOYSA-N 1,4-diisocyanato-2,3,5,6-tetramethylbenzene Chemical compound CC1=C(C)C(N=C=O)=C(C)C(C)=C1N=C=O LGLNTUFPPXPHKF-UHFFFAOYSA-N 0.000 description 1
- ALQLPWJFHRMHIU-UHFFFAOYSA-N 1,4-diisocyanatobenzene Chemical compound O=C=NC1=CC=C(N=C=O)C=C1 ALQLPWJFHRMHIU-UHFFFAOYSA-N 0.000 description 1
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 1
- JRBJSXQPQWSCCF-UHFFFAOYSA-N 3,3'-Dimethoxybenzidine Chemical compound C1=C(N)C(OC)=CC(C=2C=C(OC)C(N)=CC=2)=C1 JRBJSXQPQWSCCF-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- 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
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a double-component neoprene composite rubber adhesive and a preparation method thereof, wherein the adhesive is prepared from the following components in parts by weight: 10-50 parts of modified polyurethane, 5-30 parts of modified neoprene latex, 5-40 parts of flame retardant, 3-30 parts of filler, 1-25 parts of thixotropic agent, 0.1-2 parts of adhesion promoter and 5-30 parts of diluent. The compatibility of the modified polyurethane prepared from polyether polyol with modified neoprene latex is improved, wherein latex molecules and long-ester side chain polymers are mutually diffused to form entangled points, the workability inside the mixture is improved, physical crosslinking points are formed by light calcium carbonate, hollow glass beads and the like, oxidation resistance and weather resistance of other components are better exerted, and the ageing resistance of a polyurethane adhesive is greatly improved.
Description
Technical Field
The invention relates to the technical field of adhesives, in particular to a double-component polyurethane rubber repair adhesive and a preparation method thereof.
Background
The polyurethane adhesive is an adhesive containing urethane groups (-NHCOO-) and/or isocyanate groups (-NCO) in the molecular chain, and has the advantages of high reactivity, good flexibility, excellent low temperature resistance, excellent vibration resistance, impact resistance, wear resistance, strong binding power and the like. In addition, the polyurethane adhesive has the characteristics of adjustable hardness, simple and convenient bonding process, solidification at room temperature and heating, and the like.
Rubber is used as a tire tread material, has the defects of poor durability, wear resistance, tear resistance and the like, and the polyurethane material has the characteristics of high elasticity, excellent wear resistance, good oil resistance, ozone resistance, low-temperature performance and the like, is a replaceable tread material, is frequently used for repairing a tire tread, has the problem of low adhesive force between the polyurethane material and a rubber tire carcass, and causes the problem of air leakage to occur again after the tire is repaired, so that further development of the polyurethane material is necessary.
Disclosure of Invention
The invention aims to: in order to overcome the defects of the prior art, the invention aims to provide a double-component polyurethane rubber repair adhesive with stronger adhesive force and a preparation method thereof.
The technical scheme of the invention is as follows:
the invention provides a double-component polyurethane rubber repair adhesive, which is formed by mixing an A component and a B component, wherein the A component is a polyurethane prepolymer, the B component is a mixture of acrylic resin and polyether polyol, the mass ratio of the A component to the B component is 1:1-1.5, and the A component consists of the following components in parts by weight: 40-60 parts of polyisocyanate, 10-15 parts of hydroxyl-terminated silicone oil, 25-35 parts of polyether polyol, 0.01-0.02 part of catalyst, 0.1-0.5 part of antioxidant and 5-20 parts of filler, wherein the component B comprises the following components in parts by weight: 50-70 parts of polycarbonate diol modified hydroxyl acrylic resin, 10-20 parts of solid acrylic resin, 20-30 parts of polyether polyol, 0.1-0.5 part of antioxidant and 5-10 parts of filler.
Further, the polyisocyanate is selected from one or more of toluene diisocyanate, diphenylmethane diisocyanate, 1, 4-phenylene diisocyanate, 2,3,5, 6-tetramethyl-1, 4-diisocyanatobenzene, naphthalene-1, 5-diisocyanate, 3 '-dimethyl-4, 4' -diisocyanatobiphenyl, o-dianisidine diisocyanate; preferably, the polyisocyanate is selected from one or more of toluene diisocyanate and diphenylmethane diisocyanate. More preferably, the polyisocyanate is a mixture of toluene diisocyanate and diphenylmethane diisocyanate according to a mass ratio of 1:1-3; further preferably, the mass ratio of the toluene diisocyanate to the diphenylmethane diisocyanate is 1:1.3.
further, the polyether polyol is selected from one or more of polypropylene glycol N207, polypropylene glycol N220, polypropylene glycol N210 and polyethylene glycol PEG 2000; polypropylene glycol N207 and polyethylene glycol PEG2000 are particularly preferred.
Further, the catalyst is dibutyl tin dilaurate.
Further, the antioxidant is one or more of antioxidant 1010, antioxidant 168, antioxidant 1067 and antioxidant 264.
Further, the filler is selected from one or more of volcanic ash, perlite powder, light calcium carbonate, heavy calcium carbonate, carbon black, talcum powder, hollow glass beads, silica micropowder, mica powder, fly ash, titanium pigment, calcium sulfate whisker, aluminum sulfate, barium sulfate, calcined kaolin and diatomite; preferably, the filler is selected from light calcium carbonate and hollow glass microspheres.
Further, the preparation method of the polycarbonate diol modified hydroxyl acrylic resin comprises the following steps:
1) Adding isophorone diisocyanate into a dry four-neck flask with a stirrer, a condenser and a thermometer, slowly adding polycarbonate diol, dropwise adding dibutyltin dilaurate, slowly heating to 70-90 ℃ under the protection of nitrogen, reacting for 1-5 hours, cooling to 40-60 ℃, and dropwise adding dimethylolpropionic acid dissolved in N, N-dimethylformamide, reacting for 1-5 hours until the isophorone diisocyanate is completely reacted; the molar ratio of isophorone diisocyanate, polycarbonate diol, dibutyl tin dilaurate and dimethylolpropionic acid is 1:0.5:0.02:1, a step of;
2) Under the protection of nitrogen, 100mL of N, N-dimethylformamide is added into a four-neck flask, the mixed solution in the step 1) is slowly dripped, the system temperature is slow or even 120-130 ℃, then acrylic acid monomer and initiator are dripped, the temperature is kept for 2-10h after the dripping is finished, and the monomer fully reacts to obtain the polycarbonate diol modified hydroxyl acrylic resin; the molar ratio of the polycarbonate diol to the acrylic monomer to the initiator is 1:10:0.2.
further, the mass ratio of the component A to the component B is 1:1.1-1.3; preferably, the mass ratio of the component A to the component B is 1:1.15.
The invention also provides a preparation method of the double-component polyurethane rubber repair adhesive, wherein the preparation process of the component A comprises the following steps:
adding hydroxyl-terminated silicone oil and polyether polyol into a reaction kettle, stirring and heating to 100-110 ℃, vacuumizing and removing water, cooling to 50-60 ℃, adding a catalyst, an antioxidant and a filler, uniformly mixing, slowly dripping polyisocyanate into the reaction kettle, controlling the temperature to be 60-80 ℃ for reacting for 1-5h, cooling to 40-50 ℃ after the reaction is finished, discharging, packaging and warehousing;
the preparation process of the component B comprises the following steps:
respectively adding the polycarbonate diol modified hydroxyl acrylic resin, the solid acrylic resin and the polyether polyol into a reaction kettle, heating to 50-60 ℃, stirring uniformly, respectively adding an antioxidant and a filler into the reaction kettle, stirring, heating to 100-110 ℃, vacuumizing for removing water, heating to 140-150 ℃ for reacting for 1-5h, cooling to 40-50 ℃ after the reaction is finished, discharging, packaging and warehousing.
The beneficial effects are that:
the component A and the component B are mixed and matched, so that the prepared double-component polyurethane adhesive has the characteristics of high bonding strength and good weather resistance; in addition, physical crosslinking points are formed in the bi-component polyurethane rubber repair adhesive, so that the antioxidation and weather resistance of other components are better exerted, and the ageing resistance of the polyurethane adhesive is greatly improved.
Detailed Description
The present invention will be described in further detail by the following detailed description, but it should not be construed that the scope of the invention is limited to the following examples. Various substitutions and alterations are also within the scope of this disclosure, as will be apparent to those of ordinary skill in the art and by routine experimentation, without departing from the spirit and scope of the invention as defined by the foregoing description. In the invention, toluene diisocyanate and diphenylmethane diisocyanate are purchased from a Jimevanhua group polyurethane Co., ltd, polypropylene glycol N207 and polyethylene glycol PEG2000 are purchased from Jiangsu-mountain chemical Co., ltd, the isophorone diisocyanate is purchased from Tianjin, density European chemical reagent Co., ltd, and the polycarbonate diol is purchased from Xuehua chemical Co., ltd.
Example 1
The double-component polyurethane rubber repair adhesive is formed by mixing an A component and a B component, wherein the A component is polyurethane prepolymer, the B component is a mixture of acrylic resin and polyether polyol, the mass ratio of the A component to the B component is 1:1.15, and the A component consists of the following components in parts by weight: 50 parts of polyisocyanate, 3 parts of hydroxyl-terminated silicone oil, 30 parts of polyether polyol, 0.02 part of catalyst, 0.1 part of antioxidant and 15 parts of filler, wherein the component B comprises the following components in parts by weight: 50 parts of polycarbonate diol modified hydroxyl acrylic resin, 10 parts of solid acrylic resin, 25 parts of polyether polyol, 0.1 part of antioxidant and 8 parts of filler;
the polyisocyanate is toluene diisocyanate and diphenylmethane diisocyanate according to the mass ratio of 1:1.3 a mixture of; the polyether polyol is polypropylene glycol N207; the catalyst is dibutyl tin dilaurate;
the preparation process of the component A comprises the following steps:
adding hydroxyl-terminated silicone oil and polypropylene glycol N207 into a reaction kettle, stirring and heating to 100-110 ℃, preserving heat and vacuumizing for 60 minutes until the moisture content is less than 0.02%, cooling to about 60 ℃, adding dibutyl tin dilaurate, antioxidant 1010 and light calcium carbonate, uniformly mixing, slowly dripping toluene diisocyanate into the reaction kettle, controlling the temperature to be about 70 ℃ for reaction for 1 hour, adding diphenylmethane diisocyanate, heating to 70-80 ℃ for reaction for 3 hours, cooling to 40-50 ℃ after the reaction is finished, discharging, packaging and warehousing;
the preparation process of the component B comprises the following steps:
respectively adding polycarbonate diol modified hydroxy acrylic resin, solid acrylic resin and polyethylene glycol PEG2000 into a reaction kettle, heating to 60 ℃ and uniformly stirring,
respectively adding the antioxidant 1010 and the hollow glass beads into a reaction kettle, stirring and heating to 100-110 ℃, vacuumizing and removing water, then continuously heating to 150 ℃ for reaction for 1h, cooling to 40-50 ℃ after the reaction is finished, discharging, packaging and warehousing.
The preparation method of the polycarbonate diol modified hydroxyl acrylic resin comprises the following steps:
1) Adding isophorone diisocyanate into a dry four-neck flask with a stirrer, a condenser and a thermometer, slowly adding polycarbonate diol, dropwise adding 0.2g of dibutyltin dilaurate, slowly heating to 80 ℃ under the protection of nitrogen for reaction for 3 hours, cooling to 60 ℃, and then dropwise adding dimethylolpropionic acid dissolved in N, N-dimethylformamide for reaction for 3 hours until the isophorone diisocyanate is completely reacted; the molar ratio of isophorone diisocyanate, polycarbonate diol, dibutyl tin dilaurate and dimethylolpropionic acid is 1:0.5:0.02:1, a step of;
2) Under the protection of nitrogen, 100mL of N, N-dimethylformamide is added into a four-neck flask, the mixed solution in the step 1) is slowly dripped, the system temperature is slow or even 130 ℃, acrylic acid monomer and tert-amyl peroxybenzoate are dripped, the temperature is kept for 4 hours after the dripping is finished, and the polycarbonate diol modified hydroxyl acrylic resin is obtained after the monomer fully reacts; the molar ratio of the polycarbonate diol to the acrylic acid monomer to the tert-amyl peroxybenzoate is 1:10:0.2.
example 2
The two-component polyurethane rubber repair adhesive is basically the same as that of the embodiment 1 in the raw materials and the preparation method, and the difference is that the mass ratio of the component A to the component B is 1:1.
Example 3
The two-component polyurethane rubber repair adhesive is basically the same as that of the embodiment 1 in the component raw materials and the preparation method, and the difference is that the mass ratio of the component A to the component B is 1:3.
Example 4
The two-component polyurethane rubber repair adhesive is basically the same as that of example 1 in the raw materials and the preparation method, except that the polyisocyanate in the component A is toluene diisocyanate.
Example 5
The two-component polyurethane rubber repair adhesive is basically the same as that of example 1 in the raw materials and the preparation method, except that the polyisocyanate in the component A is diphenylmethane diisocyanate.
Comparative example 1
The two-component polyurethane rubber repair adhesive is basically the same as that of example 1 in the component materials and the preparation method, except that the polycarbonate diol modified hydroxy acrylic resin in the component B is replaced by hydroxy acrylic resin (purchased from Kunkan ultra high molecular materials Co., ltd.).
Comparative example 2
The two-component polyurethane rubber repair adhesive is basically the same as that of example 4 in the raw materials and the preparation method, except that the polycarbonate diol modified hydroxy acrylic resin in the component B is replaced by hydroxy acrylic resin (purchased from Kunkan ultra high molecular materials Co., ltd.).
Performance test:
the surface of the rubber matrix was roughened, cleaned, uniformly brushed or sprayed with the two-component polyurethane rubber repair adhesive of examples 1 to 7, placed in an oven at 50 ℃ for 15 minutes, the polished polyurethane tread was cleaned, then bonded, and subjected to 5MPa pressure, cured at 110 ℃ for 3 hours, then left at room temperature for 48 hours, and then the peel strength of the rubber tread was measured according to GB8808-1988, with the test results shown in Table 1 below.
TABLE 1 Performance test results
| Peel strength (Kgf/m) | |
| Example 1 | 458 |
| Example 2 | 443 |
| Example 3 | 446 |
| Example 4 | 417 |
| Example 5 | 429 |
| Comparative example 1 | 420 |
| Comparative example 2 | 351 |
As can be seen from the above Table 1, the two-component polyurethane rubber repair adhesive provided by the invention has excellent bonding strength and weather resistance.
Claims (4)
1. A two-component polyurethane rubber repair adhesive is characterized in that: the double-component polyurethane rubber repair adhesive is formed by mixing a component A and a component B, wherein the mass ratio of the component A to the component B is 1:1.15; the component A consists of the following components in parts by weight: 40-60 parts of polyisocyanate, 3 parts of hydroxyl-terminated silicone oil, 25-35 parts of polyether polyol, 0.01-0.02 part of catalyst, 0.1-0.5 part of antioxidant and 5-20 parts of filler, wherein the component B comprises the following components in parts by weight: 50-70 parts of polycarbonate diol modified hydroxyl acrylic resin, 10-20 parts of solid acrylic resin, 20-30 parts of polyether polyol, 0.1-0.5 part of antioxidant and 5-10 parts of filler; wherein the polyisocyanate is toluene diisocyanate and diphenylmethane diisocyanate according to the mass ratio of 1: 1-3; the catalyst is dibutyl tin dilaurate; the preparation method of the polycarbonate diol modified hydroxyl acrylic resin comprises the following steps:
1) Adding isophorone diisocyanate into a dry four-neck flask with a stirrer, a condenser and a thermometer, slowly adding polycarbonate diol, dropwise adding 0.2g of dibutyltin dilaurate, slowly heating to 80 ℃ under the protection of nitrogen for reaction for 3 hours, cooling to 60 ℃, and then dropwise adding dimethylolpropionic acid dissolved in N, N-dimethylformamide for reaction for 3 hours until the isophorone diisocyanate is completely reacted; the molar ratio of isophorone diisocyanate, polycarbonate diol, dibutyl tin dilaurate and dimethylolpropionic acid is 1:0.5:0.02:1, a step of;
2) Under the protection of nitrogen, 100mL of N, N-dimethylformamide is added into a four-neck flask, the mixed solution in the step 1) is slowly dripped, the temperature of the system is slowly increased to 130 ℃, then acrylic acid monomer and tert-amyl peroxybenzoate are dripped, the temperature is kept for 4 hours after the dripping is finished, and the polycarbonate diol modified hydroxy acrylic resin is obtained after the monomer fully reacts; the molar ratio of the polycarbonate diol to the acrylic acid monomer to the tert-amyl peroxybenzoate is 1:10:0.2.
2. the two-component polyurethane rubber repair gel according to claim 1, wherein: the antioxidant is one or more selected from antioxidant 1010, antioxidant 168, antioxidant 1067 and antioxidant 264.
3. The two-component polyurethane rubber repair gel according to claim 1, wherein: the filler is one or more selected from volcanic ash, perlite powder, light calcium carbonate, heavy calcium carbonate, carbon black, talcum powder, hollow glass microsphere, silica micropowder, mica powder, fly ash, titanium pigment, calcium sulfate whisker, aluminum sulfate, barium sulfate, calcined kaolin and diatomite.
4. A method for preparing the two-component polyurethane rubber repair adhesive according to any one of claims 1 to 3, which is characterized in that: the preparation process of the component A comprises the following steps:
adding hydroxyl-terminated silicone oil and polyether polyol into a reaction kettle, stirring and heating to 100-110 ℃, vacuumizing and removing water, cooling to 50-60 ℃, adding a catalyst, an antioxidant and a filler, uniformly mixing, slowly dripping polyisocyanate into the reaction kettle, controlling the temperature to be 60-80 ℃ for reacting for 1-5h, cooling to 40-50 ℃ after the reaction is finished, discharging, packaging and warehousing;
the preparation process of the component B comprises the following steps:
respectively adding the polycarbonate diol modified hydroxyl acrylic resin, the solid acrylic resin and the polyether polyol into a reaction kettle, heating to 50-60 ℃, stirring uniformly, respectively adding an antioxidant and a filler into the reaction kettle, stirring, heating to 100-110 ℃, vacuumizing for removing water, heating to 140-150 ℃ for reacting for 1-5h, cooling to 40-50 ℃ after the reaction is finished, discharging, packaging and warehousing.
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