CN111500236A - Ballastless track surface crack repairing material and preparation method thereof - Google Patents
Ballastless track surface crack repairing material and preparation method thereof Download PDFInfo
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- CN111500236A CN111500236A CN202010460708.0A CN202010460708A CN111500236A CN 111500236 A CN111500236 A CN 111500236A CN 202010460708 A CN202010460708 A CN 202010460708A CN 111500236 A CN111500236 A CN 111500236A
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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
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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
- 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
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
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- 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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Abstract
The invention discloses a ballastless track surface crack repairing material and a preparation method thereof, wherein the ballastless track surface crack repairing material comprises a component A and a component B, wherein the component A comprises 20-50 parts by weight of an epoxy resin composition, 50-80 parts by weight of a reactive diluent and 0.01-0.1 part by weight of a white oily pigment; the component B comprises 30-80 parts of curing agent, 1-5 parts of accelerator, 5-20 parts of hyperbranched toughening agent and 0.01-0.1 part of black oily pigment; the hyperbranched flexibilizer is at least one of aliphatic hyperbranched polyester HyPer U102, aromatic hyperbranched polyester HyPer H30 and hyperbranched silicone resin HyPer HPS601, and the weight ratio of the prepared component A to component B is 2-5: 1 and mixing. The hyperbranched toughening agent is adopted, so that when the surface crack repairing material is reacted and cured under lower system viscosity, the flexibility of a molecular chain segment and the molecular motion rate are increased, and the curing rate is effectively improved.
Description
Technical Field
The invention belongs to the field of building materials, and particularly relates to a ballastless track surface crack repairing material and a preparation method thereof.
Background
The ballastless track is a main form of a high-speed railway track in China, and cracks are easily caused on the surface of the ballastless track due to the influence of factors such as load, temperature and humidity alternation and the like in the long-term operation process. If the repair is not carried out in time, rainwater and air can corrode the concrete along the cracks, so that reinforcing steel bars in the concrete are corroded, the concrete is extruded and expanded continuously, finally, the concrete is broken, falls into blocks and is damaged, the durability and the bearing capacity of the ballastless track concrete track bed are greatly reduced, and the driving safety can be threatened in serious cases.
Patent CN103497487A discloses a cold-mix epoxy resin material for quickly repairing pits of an epoxy asphalt pavement layer, which comprises a component A and a component B, wherein the component A mainly comprises epoxy resin, an active diluent, a coupling agent, a thixotropic agent and a reinforcing agent, and the component B mainly comprises a curing agent, an accelerator, a thixotropic agent, a defoaming agent and a toughening agent. The mass ratio of the sum of the components A and B to the aggregate is 16:84-19: 81. The toughening agent coal tar adopted by the invention is black or brown viscous liquid, is mainly a mixture of phenols, aromatic hydrocarbons and heterocyclic compounds, has high viscosity, increases the viscosity of the prepared material, and is difficult to pour under no pressure when used as a repairing material.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a ballastless track surface crack repairing material, which reduces the viscosity of the material and facilitates non-pressure pouring.
In order to achieve the purpose, the invention adopts the technical scheme that:
the ballastless track surface crack repairing material comprises a component A and a component B, wherein the component A comprises 20-50 parts by weight of an epoxy resin composition, 50-80 parts by weight of a reactive diluent and 0.01-0.1 part by weight of a white oily pigment;
the component B comprises 30-80 parts of curing agent, 1-5 parts of accelerator, 5-20 parts of hyperbranched toughening agent and 0.01-0.1 part of black oily pigment; the hyperbranched flexibilizer is at least one of aliphatic hyperbranched polyester HyPer U102, aromatic hyperbranched polyester HyPer H30 and hyperbranched silicone resin HyPer HPS 601;
the weight ratio of the prepared component A to the component B is 2-5: 1 and mixing.
The resorcinol type epoxy resin composition is adopted, so that the curing speed of the surface crack repairing material is improved, and the skylight point construction is possible; the viscosity of the whole crack repairing material is reduced by matching with a bi-functional or multi-functional reactive diluent, so that the material can infiltrate into the inside of the crack under the non-pressure condition; by adopting the hyperbranched toughening agent, chemical bonds are generated between the terminal group of the hyperbranched toughening agent and the matrix resin, the regularity of a network structure of a cured resin of the matrix resin is damaged, a 'distortion space' between molecules of the hyperbranched toughening agent and the matrix resin is generated, and further more energy can be absorbed when the repairing material is stressed, so that a good toughening effect is obtained, and brittle fracture caused by dynamic load is avoided; the color of the adopted white oily pigment and black oily pigment is consistent with that of concrete after being repaired, only polishing and flattening are needed, and the surface is not required to be coated with a protective layer; meanwhile, the concrete surface cracks are repaired under the non-pressure condition, the use of maintenance equipment is reduced, the construction is convenient and fast, and the construction efficiency is greatly improved.
Further, the hyperbranched toughening agent comprises aliphatic hyperbranched polyester HyPer U102, aromatic hyperbranched polyester HyPer H30 and hyperbranched silicone resin HyPer HPS601, and the weight ratio of the aliphatic hyperbranched polyester HyPerU102 to the aromatic hyperbranched polyester HyPer H30 to the hyperbranched silicone resin HyPer HPS601 is 1:1: 1.
Further, the epoxy resin composition comprises resorcinol type epoxy resin, and also comprises at least one of bisphenol F type epoxy resin and alicyclic epoxy resin.
Further, the resorcinol type epoxy resin accounts for 40-80% of the total mass of the epoxy resin composition.
Further, the curing agent is at least one selected from the group consisting of pentamethylenediamine, hexamethylenediamine, and N- (6-aminohexyl) -1, 6-hexamethylenediamine.
Further, the curing agent comprises hexamethylene diamine and N- (6-aminohexyl) -1, 6-hexamethylene diamine, and the mass ratio of the hexamethylene diamine to the N- (6-aminohexyl) -1, 6-hexamethylene diamine is 1: 2.
further, the reactive diluent is a bifunctional or polyfunctional reactive diluent, and comprises at least one of polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, 1, 2-cyclohexanediol diglycidyl ether, castor oil triglycidyl ether, trimethylolpropane triglycidyl ether, adipic acid diglycidyl ester and hexahydrophthalic acid diglycidyl ester.
Further, the accelerator is selected from at least one of benzyldimethylamine, o-hydroxybenzyldimethylamine, 2-mercaptobenzothiazole, N-diglycidylaniline and titanate.
Further, the white oily pigment is titanium dioxide treated by stearic acid, and the black oily pigment is aniline black.
The invention also aims to provide a preparation method of the ballastless track surface crack repairing material, which comprises the following steps:
(1) adding the epoxy resin composition into the reactive diluent according to the weight part ratio, uniformly stirring, adding the white oily pigment, uniformly stirring, grinding by three rollers, and cooling to obtain a component A;
(2) uniformly stirring the curing agent, the accelerator and the hyperbranched toughening agent in parts by weight, adding the black oily pigment, uniformly stirring, grinding by three rollers, and cooling to obtain a component B;
(3) and uniformly mixing the component A and the component B according to the weight ratio of 2-5: 1 to obtain the repairing material.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, when the hyperbranched toughening agent is adopted for curing, chemical bonds are generated between the terminal end group of the hyperbranched toughening agent and the matrix resin, the regularity of the network structure of the cured matrix resin is damaged, and a 'distortion space' between hyperbranched toughening agent molecules and the matrix resin is generated, so that the repairing material can absorb more energy when stressed, an excellent toughening effect is obtained, and brittle fracture caused by dynamic load is avoided. The hyperbranched toughening agent has a unique branched structure, and the flexibility of a molecular chain segment and the molecular motion rate are high, so that the viscosity is low, the viscosity can be obviously reduced when the hyperbranched toughening agent is applied to a repairing material, and the curing rate is effectively improved.
(2) The invention reduces the viscosity of the whole crack repairing material by adopting the bifunctional or polyfunctional active diluent and the hyperbranched flexibilizer, so that the material can infiltrate into the inside of the crack under the non-pressure condition; the curing speed of the surface crack repairing material is improved by the synergistic effect of the resorcinol type epoxy resin composition and the hyperbranched toughening agent, namely the efficient reaction of the hyperbranched toughening agent and the matrix resin; the color of the white oily pigment and the color of the black oily pigment are consistent with that of concrete after being repaired, only polishing and leveling are needed, and the surface is not required to be coated with a protective layer; meanwhile, the concrete surface cracks are repaired under the non-pressure condition, the use of maintenance equipment is reduced, the construction is convenient and fast, and the construction efficiency is greatly improved.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As a preferred implementation manner, the preparation method of the ballastless track surface crack repairing material in the following examples and comparative examples comprises the following steps:
(1) adding the epoxy resin composition into the reactive diluent according to the weight part ratio, uniformly stirring, adding the white oily pigment, uniformly stirring, grinding by three rollers, and cooling to obtain a component A;
(2) uniformly stirring the curing agent, the accelerator and the hyperbranched toughening agent in parts by weight, adding the black oily pigment, uniformly stirring, grinding by three rollers, and cooling to obtain a component B;
(3) and uniformly mixing the component A and the component B according to the weight ratio of 2-5: 1 to obtain the repairing material.
The inventors have found that adjusting within the parameters defined in the above preparation method has little effect on the efficacy of the resulting repair material, and thus, the above method is a preferred preparation method of the present invention.
The process of the present invention will be further described below by taking specific examples of the conditions for carrying out the process.
Example 1
The ballastless track surface crack repairing material comprises a component A and a component B, wherein the component A comprises 35 parts by weight of epoxy resin composition, 65 parts by weight of reactive diluent and 0.05 part by weight of white oily pigment stearic acid-treated titanium dioxide; the component B comprises 55 parts of a curing agent, 3 parts of an accelerator benzyl dimethylamine, 12 parts of a hyperbranched flexibilizer and 0.05 part of black oily pigment nigrosine.
The epoxy resin composition comprises 21 parts of resorcinol type epoxy resin and 14 parts of bisphenol F type epoxy resin; the reactive diluent was 32.5 parts trimethylolpropane triglycidyl ether and 32.5 parts diglycidyl adipate.
The curing agent comprises 18.3 parts of hexamethylene diamine and 36.7 parts of N- (6-aminohexyl) -1, 6-hexamethylene diamine;
the hyperbranched toughening agent comprises 4 parts of aliphatic hyperbranched polyester HyPer U102, 4 parts of aromatic hyperbranched polyester HyPer H30 and 4 parts of hyperbranched silicone resin HyPer HPS 601.
And (3) mixing the component A and the component B in a weight ratio of 3: 1, mixing to obtain the repairing material.
Example 2
Example 2 differs from example 1 in that: the component A comprises 20 parts of epoxy resin composition, 80 parts of reactive diluent and 0.01 part of white oily pigment in parts by weight; the component B comprises 80 parts of curing agent, 1 part of accelerator, 17 parts of hyperbranched toughening agent and 0.01 part of black oily pigment.
Example 3
Example 3 differs from example 1 in that: the component A comprises 50 parts of epoxy resin composition, 50 parts of reactive diluent and 0.1 part of white oily pigment in parts by weight; the component B comprises 30 parts of curing agent, 5 parts of accelerator, 7.5 parts of hyperbranched toughening agent and 0.1 part of black oily pigment.
Example 4
Example 4 differs from example 1 in that: the hyperbranched toughening agent is aliphatic hyperbranched polyester HyPerU 102.
Example 5
Example 5 differs from example 1 in that: the hyperbranched toughening agent is aromatic hyperbranched polyester HyPerH 30.
Example 6
Example 6 differs from example 1 in that: the hyperbranched toughening agent is hyperbranched organic silicon resin HyPerHPS 601.
Example 7
Example 7 differs from example 1 in that: the hyperbranched toughening agent comprises 4 parts of aromatic hyperbranched polyester HyPer H30 and 8 parts of hyperbranched silicone resin HyPer HPS 601.
Example 8
Example 8 differs from example 1 in that: the curing agent is hexamethylene diamine.
Example 9
Example 9 differs from example 1 in that: the curing agent is pentanediamine.
Example 10
Example 10 differs from example 1 in that: the curing agent is N- (6-aminohexyl) -1, 6-hexanediamine.
Example 11
Example 11 differs from example 1 in that: the hyperbranched toughening agent comprises 2.4 parts of aliphatic hyperbranched polyester HyPer U102, 2.4 parts of aromatic hyperbranched polyester HyPer H30 and 7.2 parts of hyperbranched silicone resin HyPer HPS 601.
Example 12
Example 12 differs from example 1 in that: the curing agent is hexamethylene diamine and N- (6-aminohexyl) -1, 6-hexamethylene diamine, and the mass ratio of the hexamethylene diamine to the N- (6-aminohexyl) -1, 6-hexamethylene diamine is 3: 1.
example 13
Example 13 differs from example 1 in that: 20 parts of hyperbranched toughening agent, wherein the hyperbranched toughening agent comprises 6.67 parts of aliphatic hyperbranched polyester HyPer U102, 6.67 parts of aromatic hyperbranched polyester HyPer H30 and 6.66 parts of hyperbranched silicone resin HyPer HPS 601.
Comparative example 1
Comparative example 1 differs from example 1 in that: 12 parts of common toughening agent polysulfide rubber is adopted to replace the hyperbranched toughening agent.
Comparative example 2
Comparative example 2 differs from example 1 in that: replacing hyperbranched toughening agent, adopting common toughening agent organosilicon toughening agent S-20312 parts.
Comparative example 3
Comparative example 3 differs from example 1 in that: the curing agent is triethylene tetramine.
Comparative example 4
Comparative example 4 differs from example 1 in that: the curing agent is an aliphatic amine addition product, and the aliphatic amine addition product is obtained by addition reaction of n-butyl glycidyl ether and aliphatic amine triethylenetetramine.
Comparative example 5
Comparative example 5 differs from example 1 in that: the curing agent is amidoamine.
Comparative example 6
Comparative example 6 differs from example 1 in that: the curing agent is amine-terminated polyether.
The ballastless track surface crack repair materials prepared in the examples 1-10 and the comparative examples 1-6 are respectively tested according to the following standards: testing the viscosity according to GB/T2794-; testing the open time according to GB/T7123.1-2015 "determination of open time for Multi-component Adhesives"; testing the compressive strength, the tensile strength, the bending strength and the elongation at break according to GB/T2567 plus 2008 resin casting body performance test method; the bonding strength was tested according to JC/T1041-2007 epoxy resin grouting material for concrete cracks, and the results are shown in the following Table 1:
TABLE 1 results of examples 1-X and comparative examples 1-X
By analyzing the data of the examples 1-7, 11, 13 and the comparative examples 1-2, the hyperbranched toughening agent adopted by the invention has the characteristics of low viscosity and high reactivity due to the abundant end groups in the polymer with equivalent molecular weight because of the unique branched structure, and can obviously reduce the viscosity, increase the flexibility and molecular motion rate of molecular chain segments and effectively improve the curing rate when being applied to a repairing material; chemical bonds are generated between the end groups in the hyperbranched toughening agent and the matrix resin, the regularity of a cured resin network structure of the matrix resin is damaged, a 'distortion space' between molecules of the hyperbranched toughening agent and the matrix resin is generated, and then more energy can be absorbed when the repairing material is stressed, so that the hyperbranched toughening agent has a better toughening effect under the condition that the compressive strength, the tensile strength, the bending strength and the bonding strength are kept at a higher level, and the brittle fracture caused by dynamic load is avoided. Further analyzing the data of examples 1-3, it can be seen that the mechanical properties of the material are not greatly affected when the ratio of the hyperbranched toughener is maintained and when the addition amount of other components, such as the reactive diluent, the epoxy resin composition, etc. of examples 2 and 3 is changed. However, when the amount of the hyperbranched toughening agent is changed, as in example 13, when the amount of the hyperbranched toughening agent is large, the elongation at break can be as high as 11.3%, and the viscosity, the operable time, the compressive strength, the bending strength, the tensile strength and the bonding strength are close to the lower limit of the use requirement of the repair material, because when the amount of the hyperbranched toughening agent is too large, the 'twisting space' between molecules of the hyperbranched toughening agent and the matrix resin is increased, and further the crosslinking density of the matrix resin is reduced, so that the properties except the elongation at break are reduced to different degrees. Therefore, the hyperbranched toughening agent has important influence on the mechanical property of the material.
The comparative examples 1 and 2 adopt the common toughening agent as the linear high molecular polymer with larger molecular weight, the molecules are easy to intertwine with each other, so that the viscosity of the toughening agent is overlarge, the intermolecular movement of the repairing material is blocked during reaction and curing, the number of the terminal groups of the common toughening agent is less than that of the hyperbranched toughening agent, and the reaction activity is insufficient, thereby slowing down the curing speed of the repairing material. Although the toughness of the repair material can be slightly improved by means of the 'sea-island effect' or 'IPN interpenetrating network effect' of the common toughening agent, the compressive strength, the tensile strength, the bending strength and the bonding strength of the repair material are reduced to different degrees. The material used as a repairing material is applied to the railway maintenance industry, not only can no-pressure pouring be carried out, but also the construction of skylight points is difficult, all the strengths are affected, and the application of the repairing material is limited. When the hyperbranched silicone toughening agent of the present invention is a hyperbranched silicone resin HyPer HPS601 (for example, in example 11), the polarity of the repair material is decreased, so that the surface wettability is reduced, and the bonding force with concrete is insufficient due to the interface effect during curing of the repair material, so that the bonding force of the repair material is reduced, and therefore, the hyperbranched toughening agent is preferably the aliphatic hyperbranched polyester HyPer U102, the aromatic hyperbranched polyester HyPer H30, and the hyperbranched silicone resin HyPer HPS601 in a weight ratio of 1:1: 1.
As can be seen from the analysis of the data of examples 8-10 and 12 and comparative examples 3-6, the present invention provides a repair material having excellent curing speed, viscosity and toughness by selecting the curing agent as the amino-terminated long-chain aliphatic amine. Amine-terminated polyethers (e.g., comparative example 6) and amidoamines (e.g., comparative example 5) can provide good toughness and lower viscosity, but the amine activity at the molecular chain end is reduced due to the long-chain polyoxyalkylene structure in the amine-terminated polyether, resulting in slower curing speed; the conjugation effect of the amido groups in the amidoamine reduces the electron cloud density of nitrogen atoms, so that the electron cloud density of the nitrogen atoms is weakened to combine with protons, namely, the activity of the amino groups in the molecules is reduced, and the curing speed is slower. Triethylene tetramine (such as a comparative example 3) and aliphatic amine addition compound (such as a comparative example 4) are high in curing speed, but due to the fact that the number of active hydrogen in amino groups in molecules is large and the molecular chain between the amino groups is short, the cured product is excessively crosslinked, the toughness of the cured product is insufficient, the cured product is prone to brittle fracture, the cured product cannot be used for repairing surface cracks of ballastless tracks affected by dynamic loads, and secondary cracking at repaired positions is easily caused. It can be seen from the analysis of the data in example 12 that, since the hexamethylenediamine has a regular molecular structure and is white crystal at room temperature, if the amount of hexamethylenediamine in the curing agent is high, the viscosity of the repair material is significantly increased, and the repair effect is not good when pressureless pouring is adopted. Therefore, the curing agent is preferably a mixture of hexamethylenediamine and N- (6-aminohexyl) -1, 6-hexamethylenediamine in a mass ratio of 1: 2.
although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The ballastless track surface crack repairing material is characterized by comprising a component A and a component B, wherein the component A comprises 20-50 parts by weight of an epoxy resin composition, 50-80 parts by weight of a reactive diluent and 0.01-0.1 part by weight of a white oily pigment;
the component B comprises 30-80 parts of curing agent, 1-5 parts of accelerator, 5-20 parts of hyperbranched toughening agent and 0.01-0.1 part of black oily pigment; the hyperbranched flexibilizer is at least one of aliphatic hyperbranched polyester HyPer U102, aromatic hyperbranched polyester HyPer H30 and hyperbranched silicone resin HyPer HPS 601;
the weight ratio of the prepared component A to the component B is 2-5: 1 and mixing.
2. The ballastless track surface crack repairing material of claim 1, wherein the hyperbranched toughening agent comprises aliphatic hyperbranched polyester HyPer U102, aromatic hyperbranched polyester HyPer H30 and hyperbranched silicone resin HyPer HPS601, and the weight ratio of the aliphatic hyperbranched polyester HyPer U102, the aromatic hyperbranched polyester HyPer H30 and the hyperbranched silicone resin HyPer HPS601 is 1:1: 1.
3. The ballastless track surface crack repairing material of claim 1, wherein the epoxy resin composition comprises resorcinol type epoxy resin, and further comprises at least one of bisphenol F type epoxy resin and alicyclic epoxy resin.
4. The ballastless track surface crack repairing material of claim 3, wherein the resorcinol type epoxy resin accounts for 40-80% of the total mass of the epoxy resin composition.
5. The ballastless track surface crack repairing material of claim 1, wherein the curing agent is at least one selected from the group consisting of pentamethylenediamine, hexamethylenediamine, and N- (6-aminohexyl) -1, 6-hexamethylenediamine.
6. The ballastless track surface crack repairing material of claim 5, wherein the curing agent comprises hexamethylenediamine and N- (6-aminohexyl) -1, 6-hexamethylenediamine, and the mass ratio of the hexamethylenediamine to the N- (6-aminohexyl) -1, 6-hexamethylenediamine is 1: 2.
7. the ballastless track surface crack repairing material of claim 1, wherein the reactive diluent comprises at least one of polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, 1, 2-cyclohexanediol diglycidyl ether, castor oil triglycidyl ether, trimethylolpropane triglycidyl ether, adipic acid diglycidyl ester, and hexahydrophthalic acid diglycidyl ester.
8. The ballastless track surface crack repairing material of claim 1, wherein the accelerator is at least one selected from the group consisting of benzyldimethylamine, o-hydroxybenzyldimethylamine, 2-mercaptobenzothiazole, N-diglycidylaniline and titanate.
9. The ballastless track surface crack repairing material of claim 1, wherein the white oily pigment is titanium dioxide treated by stearic acid, and the black oily pigment is aniline black.
10. The preparation method of the ballastless track surface crack repairing material of any one of claims 1 to 9, which is characterized by comprising the following steps:
(1) adding the epoxy resin composition into the reactive diluent according to the weight part ratio, uniformly stirring, adding the white oily pigment, uniformly stirring, grinding by three rollers, and cooling to obtain a component A;
(2) uniformly stirring the curing agent, the accelerator and the hyperbranched toughening agent in parts by weight, adding the black oily pigment, uniformly stirring, grinding by three rollers, and cooling to obtain a component B;
(3) and uniformly mixing the component A and the component B according to the weight ratio of 2-5: 1 to obtain the repairing material.
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| CN112375339A (en) * | 2020-11-24 | 2021-02-19 | 上海涂固安高科技有限公司 | Preparation method of aqueous hyperbranched toughened alicyclic epoxy patching material |
| CN112920614A (en) * | 2021-01-28 | 2021-06-08 | 金闻闻 | High-temperature-resistant waterproof epoxy asphalt and preparation method thereof |
| CN113387657A (en) * | 2021-07-13 | 2021-09-14 | 河南融之科建材有限公司 | High-strength anti-cracking masonry dry-mixed mortar and production process thereof |
| CN113716943A (en) * | 2021-08-31 | 2021-11-30 | 浙江锦诚新材料股份有限公司 | Silicon mullite brick for cement rotary kiln and preparation method thereof |
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| CN113387657A (en) * | 2021-07-13 | 2021-09-14 | 河南融之科建材有限公司 | High-strength anti-cracking masonry dry-mixed mortar and production process thereof |
| CN113716943A (en) * | 2021-08-31 | 2021-11-30 | 浙江锦诚新材料股份有限公司 | Silicon mullite brick for cement rotary kiln and preparation method thereof |
| CN113716943B (en) * | 2021-08-31 | 2022-09-06 | 浙江锦诚新材料股份有限公司 | Silicon mullite brick for cement rotary kiln and preparation method thereof |
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