CN111847983A - Anchoring material for sleeper screw spike - Google Patents
Anchoring material for sleeper screw spike Download PDFInfo
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- CN111847983A CN111847983A CN201911280860.4A CN201911280860A CN111847983A CN 111847983 A CN111847983 A CN 111847983A CN 201911280860 A CN201911280860 A CN 201911280860A CN 111847983 A CN111847983 A CN 111847983A
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- parts
- agent
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- anchoring material
- anchoring
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/06—Acrylates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural materials
Abstract
The invention relates to an anchoring material for a sleeper screw spike, which is characterized by comprising, by weight, 60-110 parts of vinyl ester resin, 0.5-5 parts of amine accelerator, 0.005-0.1 part of free radical polymerization inhibitor, 0.5-5 parts of peroxide initiator, 500-1500 parts of continuous graded quartz sand, 100-500 parts of silicon micropowder, 0.2-3 parts of secondary thiol compound, and 1-5 parts of a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment in total mass. The invention breaks through the limitation that the resin spike anchoring agent is a single type of epoxy anchoring agent in the market, solves the bottleneck of on-line quick anchoring operation, and is a novel anchoring adhesive which has no pollution, high insulativity, high early strength, high pull-out resistance, high durability, no corrosion to reinforcing steel bars and acceptable cost.
Description
Technical Field
The invention belongs to the technical field of anchoring materials, and particularly relates to an anchoring material for a sleeper screw spike.
Background
The sulfur anchoring agent is one of the main anchoring modes adopted by concrete sleepers in China. Its advantages are low cost, high solidifying speed and high insulating performance (CN 101219874, CN 101935964A). However, the spike anchoring by using the sulfur anchoring agent has the following defects: the raw materials need to be decocted at high temperature (140-160 ℃) before anchoring, and a large amount of acid gas and toxic smog are generated in the decocting process, so that the health of constructors and the surrounding environment are seriously damaged; when the anchoring agent decocted at high temperature is poured into the reserved nail holes, the nail holes are heated suddenly, and the surface structure of the reserved nail holes of the sleeper can be damaged due to an overlarge temperature difference in a short time, so that the hidden danger of sleeper damage is caused; in addition, the sulfur anchoring agent can generate obvious volume shrinkage in the cooling and solidifying process, which easily causes gaps between the spike and the reserved nail hole surface, and influences the bonding performance and the withdrawal resistance.
To solve the above problems, cement-based anchors are increasingly being used (CN 105218011A). The cement-based anchoring agent has the main advantages of high anchoring strength, no need of heating during operation, capability of working with water and good durability. But the moisture insulation resistance is low, and the requirement of the moisture insulation resistance value of 1.2 multiplied by 105 omega in the standard is not easy to meet. When the resistance value does not reach the standard, the railway communication signal is easy to lose, and the driving safety is endangered. In practical applications, sleepers with insulating bushings sometimes have to be used to ensure the insulating performance requirements, thereby increasing the production costs to a certain extent.
The resin anchoring agent is a kind of anchoring agent with excellent comprehensive performance, and is widely applied to the fields of bar-planting anchoring and the like. The anchoring agent has the advantages of high anchoring strength, simple operation process, no pollution and the like, and also has good moisture insulation resistance value. The invention patent CN110218024A discloses a resin-based screw spike anchoring agent for railway sleepers and a preparation method thereof.A raw material A, B, C is used by an inventor, wherein a component A comprises 80-95% of bisphenol A epoxy resin and 5-20% of monoepoxy group epoxy resin, a component B comprises 92-100% of modified aliphatic amine and 0-8% of an accelerator, and a component C is quartz sand, so that the resin-based screw spike anchoring agent can be used in a full-temperature range at the temperature of-20 ℃ to +35 ℃. At present, resin spike anchoring agents in the market are single in variety, only epoxy anchoring agents are used, the coagulation and solidification speed is relatively low, and the rapid on-line anchoring operation is not facilitated. There is a need to develop a novel anchoring adhesive which is pollution-free, high in insulation, high in early strength, high in pulling resistance, high in durability, free of corrosion to steel bars and acceptable in cost, so as to meet the anchoring requirement of the concrete sleeper screw spike.
Disclosure of Invention
The invention aims to solve the problems and provides an anchoring material for a sleeper screw spike and a preparation method of the material.
The anchoring material for the sleeper screw spike is characterized by comprising, by weight, 60-120 parts of vinyl ester resin, 0.5-5 parts of amine accelerator, 0.005-0.1 part of free radical polymerization inhibitor, 0.5-5 parts of peroxide initiator, 500-1500 parts of continuous graded quartz sand, 100-500 parts of silicon micropowder, 0.2-3 parts of secondary thiol compound, and 1-5 parts of a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment in total mass.
The vinyl ester resin does not contain styrene and methyl styrene monomers, contains 5-25% of a mixture of allyl monomers and acrylate monomers, and the functionality of the used diluent monomer is 2.1-2.5.
The amine accelerator is one or more of N, N ' -dimethylaniline, N ' -diethylaniline, N ' -dimethyl p-methylaniline and di (2-hydroxyethyl) p-methylaniline.
The free radical polymerization inhibitor is one or more of DPPH, hydroquinone and p-tert-butyl catechol.
The peroxide initiator is peroxide after pasty treatment, and the effective component is 45-65%.
The molecular weight of the secondary mercaptan is 400-600, the mercapto groups in the molecules are all located on secondary carbon, and the functionality of the mercapto groups in each molecule is 3-4.
The gel time and the hardening time of the anchoring material are both 8-12 min, and the time difference between the two times is not more than 1 min.
The fluidity of the anchoring material is more than 210mm, the 20-min compressive strength can reach more than 50MPa, and the 20-min pull-out resistance of the sleeper spike anchored by using the anchoring material can reach 100 KN.
The preparation method of the anchoring material for the sleeper screw spike is characterized by comprising the following steps of:
(1) respectively dissolving a certain amount of an accelerant, a polymerization inhibitor and a thiol compound in a certain amount of vinyl ester resin to prepare a mixture with the solute mass fraction of 1-5%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) Adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, and grinding and dispersing into paste to obtain the component B.
The anchoring material for the sleeper screw spike has the positive effects that:
the free radical cure mechanism of vinyl ester resins allows spike anchors based on their host resins to cure in a faster time than epoxy anchor systems. By designing and adjusting the molecular structures and relative proportions of the initiator, the accelerator and the polymerization inhibitor, the reaction induction period of a free radical reaction system can be adjusted more finely, so that the gel time and the curing time of the spike glue are adjusted and controlled, the sensitivity of the reaction speed to the temperature is reduced, the anchor glue always keeps better working performance before generating gel at different temperatures, and the anchor glue is rapidly cured after generating a gel phenomenon to realize faster strength development. The optimized graded filler further realizes fine adjustment of the flow characteristic, the reaction speed and other working performances of the system and the mechanical strength and other performances of the solidified body. Meanwhile, the reasonable use of the secondary mercaptan has good effects of controlling the chain growth and the chain transfer speed, improving the storage stability, the low-temperature reactivity and the reaction degree of the anchoring adhesive, reducing the stress concentration of a curing system, enhancing the flexibility of a curing body and the like. The secondary mercaptan has synergistic effect with the initiator, promoter and polymerization inhibitor in the system, and the obtained reaction system and cured body have excellent performance when the secondary mercaptan is compounded in proper proportion.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
2 parts of amine accelerator;
0.05 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Example 2:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
0.5 part of amine accelerator;
0.05 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Example 3:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
5 parts of amine accelerator;
0.05 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Example 4:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
2 parts of amine accelerator;
0.005 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Example 5:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
2 parts of amine accelerator;
0.1 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Example 6:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
2 parts of amine accelerator;
0.05 part of free radical polymerization inhibitor;
0.5 part of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
Assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Example 7:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
2 parts of amine accelerator;
0.05 part of free radical polymerization inhibitor;
5 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) Respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Example 8:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
2 parts of amine accelerator;
0.05 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.2 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) Adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Example 9:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
2 parts of amine accelerator;
0.05 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
3 parts of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) Adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Comparative example 1:
the anchoring material comprises the following raw materials in parts by weight:
50 parts of vinyl ester resin;
2 parts of amine accelerator;
0.05 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Comparative example 2:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
0.4 part of amine accelerator;
0.05 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Comparative example 3:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
6 parts of amine accelerator;
0.05 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Comparative example 4:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
2 parts of amine accelerator;
0.001 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Comparative example 5:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
2 parts of amine accelerator;
0.2 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Comparative example 6:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
2 parts of amine accelerator;
0.05 part of free radical polymerization inhibitor;
0.4 part of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
Assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Comparative example 7:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
2 parts of amine accelerator;
0.05 part of free radical polymerization inhibitor;
6 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.5 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) Respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Comparative example 8:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
2 parts of amine accelerator;
0.05 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
0.1 part of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) Adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Comparative example 9:
the anchoring material comprises the following raw materials in parts by weight:
100 parts of vinyl ester resin;
2 parts of amine accelerator;
0.05 part of free radical polymerization inhibitor;
3 parts of peroxide initiator;
800 parts of quartz sand;
200 parts of silicon micropowder;
4 parts of thiol compound;
assistant and pigment, etc. 2 parts
The preparation steps comprise:
(1) respectively dissolving quantitative accelerator, polymerization inhibitor and thiol compound in quantitative vinyl ester resin to prepare a mixture with solute mass fraction of 1%;
(2) adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) Adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, wherein the mass fraction of the peroxide is 50%, and grinding and dispersing the mixture into paste to obtain the component B.
Description of the effects:
the specific characterization method comprises the following steps:
(1) the gel time and the curing time were measured according to the standard "test method for unsaturated polyester resins" GBT 7193-2008.
(2) The compressive strength test was carried out according to the specification of "Cement mortar Strength test" GBT 17671-.
(3) The pullout resistance test was performed according to the specification of "concrete sleeper screw anchoring" Q/CR 352-.
(4) The fluidity test method refers to the regulations of 'Cement mortar fluidity test method' GB/T2419, and the test is completed within 6 min.
(5) The treatment modes in the durability test include UV treatment, acid solution treatment, alkali solution treatment, and salt solution treatment.
From the results of example 1 and comparative example 1, it can be seen that the acrylate latex added in comparative example 1 is too large, the coating durability is reduced, the durability test is not passed, and the elongation at break is too high, increasing the risk of peeling off the coating;
from the results of example 1 and comparative example 2, it can be seen that the amount of titanium dioxide filler added in comparative example 2 is too large and the elongation at break of the coating is too low;
As can be seen from the results of the example 1 and the comparative example 3, the reflective heat insulation effect of the coating is obviously reduced because no titanium dioxide filler is added in the comparative example 3;
from the results of example 1 and comparative example 4, it can be seen that the insulating temperature difference of the coating is reduced without adding hollow glass beads in comparative example 4;
from the results of example 1 and comparative example 5, it can be seen that the amount of hollow glass microspheres added in comparative example 5 is too large, and the elongation at break of the coating is too low;
as can be seen from the results of example 1 and comparative example 6, the hollow polymer/titanium dioxide composite microspheres are not added in comparative example 6, and the heat insulation temperature difference of the coating is reduced;
from the results of the example 1 and the comparative example 7, it can be known that the amount of the hollow polymer/titanium dioxide composite microspheres added in the comparative example 7 is too large, and the heat insulation temperature difference of the coating is reduced;
from the results of example 1 and comparative example 8, it can be seen that the coating has a reduced insulating temperature difference without adding a light conversion material in comparative example 8;
from the results of the embodiment 1 and the comparative example 9, it can be known that the amount of the light conversion material added in the comparative example 9 is too large, the temperature increasing effect caused by the heat effect of the light conversion material is higher than the temperature reducing effect caused by the light conversion effect, and the heat insulation temperature difference of the coating is reduced;
in conclusion, the spike glue can meet the requirements in all aspects within the formula range claimed by the invention. Some of the properties of the spike glue will be significantly deficient when the formulation is outside the claimed scope of the invention.
Claims (9)
1. The anchoring material for the screw spike of the sleeper is characterized by comprising, by weight, 60-120 parts of vinyl ester resin, 0.5-5 parts of amine accelerator, 0.005-0.1 part of free radical polymerization inhibitor, 0.5-5 parts of peroxide initiator, 500-1500 parts of continuous graded quartz sand, 100-500 parts of silicon micropowder, 0.2-3 parts of secondary thiol compound and 1-5 parts of leveling agent, defoaming agent, wetting dispersant, thixotropic agent, thickening agent and pigment in total mass.
2. The anchoring material for a sleeper screw according to claim 1 wherein said vinyl ester resin is free of styrene and methyl styrene monomers, contains 5-25% of a mixture of an allyl monomer and an acrylate monomer, and uses a diluent monomer having a functionality of 2.1-2.5.
3. An anchoring material for sleeper screws according to claim 1 characterized in that said amine type accelerator is one or more of N, N ' -dimethylaniline, N ' -diethylaniline, N ' -dimethyl-p-methylaniline, bis (2-hydroxyethyl) p-methylaniline.
4. An anchoring material for sleeper screws as claimed in claim 1 wherein said radical inhibitor is one or more of DPPH, hydroquinone and p-tert-butylcatechol.
5. The anchoring material for the sleeper screw spike as claimed in claim 1, wherein the peroxide initiator is a peroxide after being pasted, and the effective component is 45-65%.
6. An anchoring material for sleeper screws as claimed in claim 1 wherein the molecular weight of said secondary thiol is between 400 and 600, the thiol groups in the molecule are all on secondary carbon and the thiol functionality in each molecule is between 3 and 4.
7. The anchoring material for the screw spike of sleeper as claimed in claim 1, wherein the gel time and the hardening time of the anchoring material are 8-12 min and the difference between the gel time and the hardening time is not more than 1 min.
8. The anchoring material for the sleeper screw spike according to claim 1, wherein the fluidity of the anchoring material is more than 210mm, the 20min compressive strength can be up to 50MPa or more, and the 20min pullout resistance of the sleeper screw spike anchored by using the anchoring material can be up to 100 KN.
9. Method for the preparation of an anchoring material for screw spikes of sleepers according to claims 1 to 8, characterised in that it comprises the following steps:
(1) respectively dissolving a certain amount of an accelerant, a polymerization inhibitor and a thiol compound in a certain amount of vinyl ester resin to prepare a mixture with the solute mass fraction of 1-5%;
(2) Adding a certain amount of an accelerator-resin mixture, a polymerization inhibitor-resin mixture, a thiol compound-resin mixture, a certain amount of vinyl ester resin, quartz sand, silica micropowder, a leveling agent, a defoaming agent, a wetting dispersant, a thixotropic agent, a thickening agent and a pigment into a high-speed dispersion kettle, and uniformly stirring and dispersing to obtain a component A;
(3) adding a certain amount of peroxide initiator, a certain amount of solvent and a thixotropic agent into grinding equipment, and grinding and dispersing into paste to obtain the component B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911280860.4A CN111847983A (en) | 2019-12-13 | 2019-12-13 | Anchoring material for sleeper screw spike |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911280860.4A CN111847983A (en) | 2019-12-13 | 2019-12-13 | Anchoring material for sleeper screw spike |
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|---|---|
| CN111847983A true CN111847983A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911280860.4A Pending CN111847983A (en) | 2019-12-13 | 2019-12-13 | Anchoring material for sleeper screw spike |
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| CN101238178A (en) * | 2005-06-29 | 2008-08-06 | 圣戈本磨料股份有限公司 | High-performance resin for abrasive products |
| CN102516922A (en) * | 2011-11-28 | 2012-06-27 | 中国铁道科学研究院金属及化学研究所 | Embedded sleeve anchoring adhesive, and preparation method and application thereof |
| CN103320074A (en) * | 2013-06-17 | 2013-09-25 | 武汉健桥新材料科技有限公司 | Low-temperature-environment fast-curing anchoring adhesive and preparation method thereof |
| TW201800389A (en) * | 2016-03-17 | 2018-01-01 | 富士軟片股份有限公司 | Method for producing polyfunctional thiol compound, polyfunctional thiol compound, curable composition, and method for producing curable composition |
| CN110184011A (en) * | 2019-06-21 | 2019-08-30 | 上海本诺电子材料有限公司 | A kind of low-temperature fast-curing epoxy glue |
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2019
- 2019-12-13 CN CN201911280860.4A patent/CN111847983A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101238178A (en) * | 2005-06-29 | 2008-08-06 | 圣戈本磨料股份有限公司 | High-performance resin for abrasive products |
| CN102516922A (en) * | 2011-11-28 | 2012-06-27 | 中国铁道科学研究院金属及化学研究所 | Embedded sleeve anchoring adhesive, and preparation method and application thereof |
| CN103320074A (en) * | 2013-06-17 | 2013-09-25 | 武汉健桥新材料科技有限公司 | Low-temperature-environment fast-curing anchoring adhesive and preparation method thereof |
| TW201800389A (en) * | 2016-03-17 | 2018-01-01 | 富士軟片股份有限公司 | Method for producing polyfunctional thiol compound, polyfunctional thiol compound, curable composition, and method for producing curable composition |
| CN110184011A (en) * | 2019-06-21 | 2019-08-30 | 上海本诺电子材料有限公司 | A kind of low-temperature fast-curing epoxy glue |
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