CN113046008A - Special epoxy elastic adhesive for high-mechanical-property steel bar sleeve - Google Patents
Special epoxy elastic adhesive for high-mechanical-property steel bar sleeve Download PDFInfo
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- CN113046008A CN113046008A CN202110329545.7A CN202110329545A CN113046008A CN 113046008 A CN113046008 A CN 113046008A CN 202110329545 A CN202110329545 A CN 202110329545A CN 113046008 A CN113046008 A CN 113046008A
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- 239000004593 Epoxy Substances 0.000 title claims abstract description 51
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 24
- 239000000853 adhesive Substances 0.000 title claims abstract description 24
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 24
- 239000010959 steel Substances 0.000 title claims abstract description 24
- 239000003822 epoxy resin Substances 0.000 claims abstract description 34
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 11
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims abstract description 11
- 229920000570 polyether Polymers 0.000 claims abstract description 11
- 239000004842 bisphenol F epoxy resin Substances 0.000 claims abstract description 9
- 150000001412 amines Chemical class 0.000 claims abstract description 8
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 7
- 239000007822 coupling agent Substances 0.000 claims abstract description 7
- 239000003085 diluting agent Substances 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims description 30
- 239000000539 dimer Substances 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 25
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 18
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 claims description 15
- 229920001451 polypropylene glycol Polymers 0.000 claims description 11
- -1 polyoxypropylene Polymers 0.000 claims description 8
- AOBIOSPNXBMOAT-UHFFFAOYSA-N 2-[2-(oxiran-2-ylmethoxy)ethoxymethyl]oxirane Chemical compound C1OC1COCCOCC1CO1 AOBIOSPNXBMOAT-UHFFFAOYSA-N 0.000 claims description 6
- ORTNTAAZJSNACP-UHFFFAOYSA-N 6-(oxiran-2-ylmethoxy)hexan-1-ol Chemical compound OCCCCCCOCC1CO1 ORTNTAAZJSNACP-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- QNYBOILAKBSWFG-UHFFFAOYSA-N 2-(phenylmethoxymethyl)oxirane Chemical compound C1OC1COCC1=CC=CC=C1 QNYBOILAKBSWFG-UHFFFAOYSA-N 0.000 claims description 5
- 150000004985 diamines Chemical class 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- AHDSRXYHVZECER-UHFFFAOYSA-N 2,4,6-tris[(dimethylamino)methyl]phenol Chemical group CN(C)CC1=CC(CN(C)C)=C(O)C(CN(C)C)=C1 AHDSRXYHVZECER-UHFFFAOYSA-N 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 3
- 239000004970 Chain extender Substances 0.000 claims description 3
- FQYUMYWMJTYZTK-UHFFFAOYSA-N Phenyl glycidyl ether Chemical compound C1OC1COC1=CC=CC=C1 FQYUMYWMJTYZTK-UHFFFAOYSA-N 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 238000001308 synthesis method Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- NKVCYHYQKKNFJI-UHFFFAOYSA-N 2-(hexacosan-13-yloxymethyl)oxirane Chemical compound CCCCCCCCCCCCCC(CCCCCCCCCCCC)OCC1CO1 NKVCYHYQKKNFJI-UHFFFAOYSA-N 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 7
- 229920006332 epoxy adhesive Polymers 0.000 description 5
- 239000011440 grout Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000006087 Silane Coupling Agent Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- NVKSMKFBUGBIGE-UHFFFAOYSA-N 2-(tetradecoxymethyl)oxirane Chemical compound CCCCCCCCCCCCCCOCC1CO1 NVKSMKFBUGBIGE-UHFFFAOYSA-N 0.000 description 2
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002052 molecular layer Substances 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Classifications
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- 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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/5006—Amines aliphatic
- C08G59/5013—Amines aliphatic containing more than seven carbon atoms, e.g. fatty amines
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Epoxy Resins (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a special epoxy elastic adhesive for a high-mechanical-property steel bar sleeve, which belongs to the technical field of adhesives and comprises a component A and a component B, wherein the weight ratio of the two components A, B is 100:40 or 50, wherein the component A comprises the following raw materials in parts by weight: 70-100 parts of bisphenol A epoxy resin, 40-70 parts of bisphenol F epoxy resin, 5-10 parts of end-group modified epoxy resin, 5-15 parts of diluent, 1-2 parts of defoaming agent and 1-2 parts of coupling agent; the component B comprises the following raw materials in parts by weight: 20-30 parts of modified amine curing agent, 40-55 parts of amino-terminated polyether curing agent and 1-2 parts of accelerator. The invention has the beneficial effects that: the epoxy elastic adhesive prepared by the invention has good working performance, low viscosity, high toughness, good impact resistance, good abrasion resistance, high bonding strength with a steel bar sleeve and high bonding strength with concrete.
Description
Technical Field
The invention relates to the technical field of adhesives, in particular to a special epoxy elastic adhesive for a high-mechanical-property steel bar sleeve.
Background
Along with the popularization of the assembly type buildings in China, the requirements of people on the safety of the assembly type buildings are higher and higher, particularly, the connection of the nodes of the components is an important part for the force transmission of all the components, the safety of the nodes determines the safety of the whole building, particularly, the height of the existing building is continuously increased, the earthquake resistant grade is continuously improved, and the requirements on the performance of the node connection materials are higher and higher.
The component node adopts the steel bar sleeve installation method in the present assembly type building, pre-embed threaded sleeve and twisted steel to prefabricated component, insert the reinforcing bar in the sleeve during butt joint, and pour into the grout for reinforcing bar sleeve connection, the direct gap of wall and board still need to be filled up except pouring reinforcing bar sleeve grout when prefabricated wall is connected with the prefabricated plate, also need to pour the special grout of sleeve, this kind of cement base grout intensity is very high, reach more than 85MPa, but cement base material has a characteristic, the rigidity is big, the flexibility is low, because the atress of node is not the decurrent pressure, shearing force and pulling force in addition, when receiving shearing force and pulling force, the crack will appear when cement base material receives these two kinds of forces, its mechanical properties will greatly reduced.
In order to solve the problems, the special epoxy elastic adhesive for the reinforcing steel bar sleeve with high mechanical property is provided.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a special epoxy elastic adhesive for a steel bar sleeve with high mechanical property, and in order to solve the technical problem, the invention provides the following technical scheme:
the invention provides a special epoxy elastic adhesive for a high-mechanical-property steel bar sleeve, which comprises a component A and a component B, wherein the weight ratio of the two components of A, B is 100:40 or 50, wherein,
the component A comprises the following raw materials in parts by weight: 70-100 parts of bisphenol A epoxy resin, 40-70 parts of bisphenol F epoxy resin, 5-10 parts of end-group modified epoxy resin, 5-15 parts of diluent, 1-2 parts of defoaming agent and 1-2 parts of coupling agent;
the component B comprises the following raw materials in parts by weight: 20-30 parts of modified amine curing agent, 40-55 parts of amino-terminated polyether curing agent and 1-2 parts of accelerator.
Preferably, the bisphenol A epoxy resin is E51 and/or E44, wherein the epoxy equivalent of E51 is 185-208g/eq, the epoxy value is 0.45-0.54eq/100g, the epoxy equivalent of E44 is 213-244g/eq, and the epoxy value is 0.41-0.47eq/100 g.
Preferably, the bisphenol F epoxy resin is YD170 and/or YD175, wherein the epoxy equivalent of YD170 is 160-180g/eq, the epoxy value is 0.58-0.62eq/100g, the epoxy equivalent of YD175 is 160-180g/eq, and the epoxy value is 0.57-0.63eq/100 g.
Preferably, the end-group modified epoxy resin is dimer acid modified epoxy resin, and the epoxy equivalent of the dimer acid modified epoxy resin is 390-470 g/eq.
Preferably, the dimer acid-modified epoxy resin is prepared from the following raw materials: the epoxy resin composition comprises epoxy resin E51, 1,6 hexanediol glycidyl ether, dimer acid, tetrabutylammonium bromide and acetone, wherein E51 is used as a reaction main agent, the 1,6 hexanediol glycidyl ether is used as a chain extender, the dimer acid is used as a modified end group, and the tetrabutylammonium bromide and the acetone are used as catalysts.
Preferably, the synthesis method of the dimer acid modified epoxy resin comprises the following steps: injecting 55-65 parts of E51, 25-35 parts of 1, 6HDE and 10-20 parts of dimer acid into a reaction kettle, extracting vacuum and stirring for 0.5h, introducing nitrogen gas for circulation after stirring, completely replacing air in the reaction kettle, starting heating, raising the temperature to 90-110 ℃, simultaneously weighing tetrabutylammonium bromide with the total mass of 0.1-0.4% and dissolving the tetrabutylammonium bromide into an appropriate amount of acetone, adding the tetrabutylammonium bromide into the system when the temperature of the reaction kettle reaches a set temperature, continuously raising the temperature to 120-135 ℃, continuously carrying out heat preservation reaction, measuring the acid value once every one hour, and finishing the reaction when the acid value is less than 1.5mgKOH/g to obtain the finished dimer ester modified epoxy resin.
Preferably, the diluent is one or more of phenyl glycidyl ether, benzyl glycidyl ether, carbon dodecyl to tetradecyl glycidyl ether, polyethylene glycol diglycidyl ether and polypropylene glycol diglycidyl ether.
Preferably, the antifoaming agent is WACKER986, the coupling agent is KH560, and the accelerator is DMP 30.
Preferably, the amino-terminated polyether curing agent is one or more of polyoxypropylene diamine and polyoxypropylene triamine.
Compared with the prior art, the invention has the beneficial effects that: the existing epoxy adhesive has the characteristics of high curing strength, high brittleness, short working life, weak cohesive force in a humid environment, poor corrosion resistance, no long-term stress resistance and the like, and cannot meet the requirement of mounting the assembled building nodes. According to the invention, through a large amount of experimental demonstration, appropriate raw materials are selected, and a reasonable formula is designed, so that the materials meet the requirements of an assembled structure on node installation. The three resins with different characteristics are adopted for matching, in the cured structure, the three resins respectively play respective roles to bear the stress of a building in all directions, for example, the bisphenol A epoxy resin and the modified amine curing agent have epoxy ring-opening and amino condensation reactions, the cured product generated by the reaction has the characteristics of high compressive strength, good mechanical property and the like, but the problems of brittle texture, low tensile strength, high reaction speed, short operation time, high viscosity, poor weather resistance and the like exist, so that the invention introduces the bisphenol F epoxy resin, the dimer acid modified epoxy resin and the amino-terminated polyether modified curing agent on the basis of the reaction, the introduction of the bisphenol F epoxy resin, and-CH 2-in the bisphenol F epoxy resin has higher rotation property than CH3-C-CH3 in the bisphenol A epoxy resin so as to reduce the rigidity of the polymer, the fluidity and the flexibility of the bisphenol A epoxy resin are improved, the problems of brittle texture and low tensile strength of the bisphenol A epoxy resin are greatly improved, a large amount of C-O-C is added due to the addition of the dimer acid modified epoxy resin, the elasticity of the cured product is improved on the basis of the flexibility, the long-term stress resistance of the cured product is greatly improved, the amino-terminated polyether modified curing agent is a curing agent for heating and curing, the reaction speed is slow at normal temperature, when the modified amine curing agent is subjected to ring-opening polymerization reaction, heat is slowly generated, and when the heat reaches the reaction temperature of the amino-terminated polyether curing agent, the curing agent begins to participate in the curing reaction again, so that an operator has sufficient operation time to carry out construction, and the addition of C-O-C also greatly improves the elasticity of the cured material, so that the comprehensive performance of the material is improved more and more, and the material can be used in a complex stress environment. This is the transformation to gluing agent body. In terms of adhesion, since the body to be bonded is a metal, the present invention introduces KH560, i.e., a silane coupling agent, in which a siloxy group is reactive with inorganic substances and an organic functional group is reactive with or compatible with organic substances, in modification of the adhesion of the metal. Therefore, when the silane coupling agent is between an inorganic interface and an organic interface, a coupling reaction is carried out, a bonding layer of an organic matrix, the silane coupling agent and the inorganic matrix can be formed, and the bonding performance is improved on the surface of a molecular layer, so that the mechanical bonding generated by irregular shapes and the reaction bonding on the surface of the molecular layer are carried out in the anchoring process of the sleeve steel bar, and the cured epoxy elastic adhesive has the advantages of high strength, good toughness, excellent weather resistance and long-term stress resistance, convenience in operation and capability of completely meeting the requirement of node installation of an assembled member.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a molecular structure of dimer acid modified epoxy resin in an epoxy elastic adhesive special for a high mechanical property steel bar sleeve;
FIG. 2 is a schematic representation of the isomeric molecular structure of R in FIG. 1;
FIG. 3 is a schematic diagram of a reaction mechanism of dimer acid modified epoxy resin in the epoxy elastic adhesive special for the high-mechanical-property steel bar sleeve;
FIG. 4 is a schematic view of the molecular structure of polyoxypropylene diamine in the epoxy elastic adhesive special for the high mechanical property steel bar sleeve;
FIG. 5 is a schematic view of the molecular structure of polyoxypropylene triamine in the epoxy elastic adhesive special for the high-mechanical-property steel bar sleeve.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Examples
As shown in fig. 1-5, a special epoxy elastic glue for a high-mechanical-property steel bar sleeve comprises a component A and a component B, wherein the weight ratio of the two components of A, B is 100:40 or 50, wherein,
the component A comprises the following raw materials in parts by weight: 70-100 parts of bisphenol A epoxy resin, 40-70 parts of bisphenol F type epoxy resin, 5-10 parts of end-group modified epoxy resin, 5-15 parts of diluent, 1-2 parts of defoaming agent and 1-2 parts of coupling agent, wherein the defoaming agent is WACKER986, the coupling agent is KH560, the accelerator is DMP30, the diluent is one or more of phenyl glycidyl ether, benzyl glycidyl ether, carbon twelve to tetradecyl glycidyl ether, polyethylene glycol diglycidyl ether and polypropylene glycol diglycidyl ether, the bisphenol A epoxy resin is E51 and/or E44, wherein the epoxy equivalent of E51 is 185-208g/eq, the epoxy value is 0.45-0.54eq/100g, the epoxy equivalent of E44 is 213-244g/eq, the epoxy value is 0.41-0.47eq/100g, the bisphenol F epoxy resin is YD170 and/175, wherein the epoxy equivalent of YD170 is 160-180g/eq, the epoxy value is 0.58-0.62eq/100g, the epoxy equivalent of YD175 is 160-180g/eq, the epoxy value is 0.57-0.63eq/100g, the terminal modified epoxy resin is dimer acid modified epoxy resin, and the epoxy equivalent of dimer acid modified epoxy resin is 390-470 g/eq;
the component B comprises the following raw materials in parts by weight: 20-30 parts of modified amine curing agent, 40-55 parts of amino-terminated polyether curing agent and 1-2 parts of accelerator, wherein the amino-terminated polyether curing agent is one or more of polyoxypropylene diamine and polyoxypropylene triamine.
Wherein, the component A and the component B need to be separately packaged and stored, and when in use, the two components are mixed according to a proportion.
The embodiment also discloses the raw materials for synthesizing the dimer acid-modified epoxy resin as described above: the epoxy resin composition comprises epoxy resin E51, 1,6 hexanediol glycidyl ether, dimer acid, tetrabutylammonium bromide and acetone, wherein E51 is used as a reaction main agent, the 1,6 hexanediol glycidyl ether is used as a chain extender, the dimer acid is used as a modified end group, and the tetrabutylammonium bromide and the acetone are used as catalysts.
The embodiment also discloses that the synthesis method of the dimer acid modified epoxy resin comprises the following steps: injecting 55-65 parts of E51, 25-35 parts of 1, 6HDE and 10-20 parts of dimer acid into a reaction kettle, extracting vacuum and stirring for 0.5h, introducing nitrogen gas for circulation after stirring, completely replacing air in the reaction kettle, starting heating, raising the temperature to 90-110 ℃, simultaneously weighing tetrabutylammonium bromide with the total mass of 0.1-0.4% and dissolving the tetrabutylammonium bromide into an appropriate amount of acetone, adding the tetrabutylammonium bromide into the system when the temperature of the reaction kettle reaches a set temperature, continuously raising the temperature to 120-135 ℃, continuously carrying out heat preservation reaction, measuring the acid value once every one hour, and finishing the reaction when the acid value is less than 1.5mgKOH/g to obtain the finished dimer ester modified epoxy resin.
The technical effects of the present invention will be visualized by the following examples
Comparative example 1
The component A is prepared by mixing E51180, benzyl glycidyl ether 18 and KH 5602; the component B is formed by mixing a modified amine curing agent 98 and DMP 302; the epoxy adhesive A and the epoxy adhesive B are uniformly mixed according to the mass ratio of 100: 50.
Example one
The component A is formed by mixing the following components in percentage by mass; e51100, YD17070, dimer acid modified epoxy resin 10, benzyl glycidyl ether 15, WACKER9862 and KH 5603. The component B is formed by mixing the following components in percentage by mass; 30 parts of modified amine curing agent, 55 parts of special amino-terminated polyether curing agent and 301 parts of DMP. The epoxy adhesive A and the epoxy adhesive B are uniformly mixed according to the mass ratio of 100: 40.
The performance of the comparative example I and the example I is respectively tested according to the related test methods, and the test results are shown in the following table 1:
finally, it should be noted that: 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 changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a special epoxy elastic adhesive of high mechanical properties steel bar sleeve which characterized in that: comprises a component A and a component B, wherein the weight ratio of A, B is 100:40 or 50, wherein,
the component A comprises the following raw materials in parts by weight: 70-100 parts of bisphenol A epoxy resin, 40-70 parts of bisphenol F epoxy resin, 5-10 parts of end-group modified epoxy resin, 5-15 parts of diluent, 1-2 parts of defoaming agent and 1-2 parts of coupling agent;
the component B comprises the following raw materials in parts by weight: 20-30 parts of modified amine curing agent, 40-55 parts of amino-terminated polyether curing agent and 1-2 parts of accelerator.
2. The special epoxy elastic adhesive for the high-mechanical-property steel bar sleeve as claimed in claim 1, wherein: the bisphenol A epoxy resin is E51 and/or E44, wherein the epoxy equivalent of E51 is 185-208g/eq, the epoxy value is 0.45-0.54eq/100g, the epoxy equivalent of E44 is 213-244g/eq, and the epoxy value is 0.41-0.47eq/100 g.
3. The special epoxy elastic adhesive for the high-mechanical-property steel bar sleeve as claimed in claim 1, wherein: the bisphenol F epoxy resin is YD170 and/or YD175, wherein the epoxy equivalent of YD170 is 160-180g/eq, the epoxy value is 0.58-0.62eq/100g, the epoxy equivalent of YD175 is 160-180g/eq, and the epoxy value is 0.57-0.63eq/100 g.
4. The special epoxy elastic adhesive for the high-mechanical-property steel bar sleeve as claimed in claim 1, wherein: the end-group modified epoxy resin is dimer acid modified epoxy resin, and the epoxy equivalent of the dimer acid modified epoxy resin is 390-470 g/eq.
5. The special epoxy elastic adhesive for the high-mechanical-property steel bar sleeve as claimed in claim 4, wherein: the dimer acid modified epoxy resin is prepared from the following raw materials in parts by weight: the epoxy resin composition comprises epoxy resin E51, 1,6 hexanediol glycidyl ether, dimer acid, tetrabutylammonium bromide and acetone, wherein E51 is used as a reaction main agent, the 1,6 hexanediol glycidyl ether is used as a chain extender, the dimer acid is used as a modified end group, and the tetrabutylammonium bromide and the acetone are used as catalysts.
6. The special epoxy elastic adhesive for the high-mechanical-property steel bar sleeve as claimed in claim 5, wherein: the synthesis method of the dimer acid modified epoxy resin comprises the following steps: injecting 55-65 parts of E51, 25-35 parts of 1, 6HDE and 10-20 parts of dimer acid into a reaction kettle, extracting vacuum and stirring for 0.5h, introducing nitrogen gas for circulation after stirring, completely replacing air in the reaction kettle, starting heating, raising the temperature to 90-110 ℃, simultaneously weighing tetrabutylammonium bromide with the total mass of 0.1-0.4% and dissolving the tetrabutylammonium bromide into an appropriate amount of acetone, adding the tetrabutylammonium bromide into the system when the temperature of the reaction kettle reaches a set temperature, continuously raising the temperature to 120-135 ℃, continuously carrying out heat preservation reaction, measuring the acid value once every one hour, and finishing the reaction when the acid value is less than 1.5mgKOH/g to obtain the finished dimer ester modified epoxy resin.
7. The special epoxy elastic adhesive for the high-mechanical-property steel bar sleeve as claimed in claim 1, wherein: the diluent is one or more of phenyl glycidyl ether, benzyl glycidyl ether, carbon dodecyl-tetradecyl glycidyl ether, polyethylene glycol diglycidyl ether and polypropylene glycol diglycidyl ether.
8. The special epoxy elastic adhesive for the high-mechanical-property steel bar sleeve as claimed in claim 1, wherein: the antifoaming agent is WACKER986, the coupling agent is KH560, and the accelerator is DMP 30.
9. The special epoxy elastic adhesive for the high-mechanical-property steel bar sleeve as claimed in claim 1, wherein: the amino-terminated polyether curing agent is one or more of polyoxypropylene diamine and polyoxypropylene triamine.
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| CN115926110A (en) * | 2022-12-29 | 2023-04-07 | 江苏扬农锦湖化工有限公司 | Modified epoxy resin and preparation method and application thereof |
| CN116120871A (en) * | 2023-01-10 | 2023-05-16 | 安徽牛元新材料有限公司 | Smell-removing elastic dry-hanging adhesive and preparation method thereof |
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| CN116120871A (en) * | 2023-01-10 | 2023-05-16 | 安徽牛元新材料有限公司 | Smell-removing elastic dry-hanging adhesive and preparation method thereof |
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Application publication date: 20210629 |