Waterproof anchoring agent, preparation method and application and performance evaluation method thereof
Patent Information
- Application Number
- CN202410057738.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-15
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2044-01-15
AI Technical Summary
但在浅埋富水地层,普通树脂锚固剂通常难以发挥作用,如采用过氧化甲苯作为固化剂遇水会加速其分解结块,影响固化效果;又如细小颗粒填料被水冲刷,影响锚固强度,或者持续淋水下,树脂胶泥将被冲刷出孔,进而造成锚固失效
[0025]本申请通过调整原料制作防水树脂锚固剂,以异氰酸酯作为固化剂,以高能粒子(硅酸盐)作为填料,制备出高强度、高活性和耐水性好的防水型树脂锚固剂,具有超快吸水、快速凝固、强度高的优异性能;同时在MT146.1-2011相关要求的基础上提供了一种新的评价方法,用以检测防水锚固剂的力学性能,通过特殊设计的锚固拉拔试验验证锚固剂的防水能力,并与普通树脂锚固剂对比,确定了防水锚固剂能在浅埋富水地层工况下的适用性。
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Abstract
Description
Technical Field
[0001] This application relates to the field of anchoring technology, and in particular to a waterproof anchoring agent, its preparation method, application, and performance evaluation method. Background Technology
[0002] Resin anchoring technology is widely used in water conservancy and hydropower, mining tunnels, and slope engineering due to its rapid curing at room temperature, good anchoring effect, and convenient construction. Its anchoring principle involves mixing resin with inorganic fillers, followed by cross-linking polymerization with a curing agent, bonding the anchor rod to the reinforced rock mass to form a unified load-bearing structure, thereby restraining rock deformation. However, in shallow, water-rich strata, ordinary resin anchoring agents often fail to function effectively. For example, using toluene peroxide as a curing agent accelerates its decomposition and clumping upon contact with water, affecting the curing effect; similarly, fine-particle fillers are washed away by water, affecting anchoring strength; or under continuous water spraying, the resin mortar will be washed out of the hole, leading to anchoring failure. Summary of the Invention
[0003] In view of this, the purpose of this application is to provide a waterproof anchoring agent and its preparation method, so that the waterproofing ability of the waterproof anchoring agent is significantly improved, avoiding the problems of anchoring failure and reduced anchoring effect caused by water spray or seepage when conventional anchoring agents are used in shallow buried water-rich strata.
[0004] Another objective of this application is to provide the application of the above-mentioned waterproof anchoring agent in anchoring construction, especially in anchoring construction in shallow water-rich strata.
[0005] Another objective of this application is to provide a method for evaluating the waterproof performance of waterproof anchoring agents.
[0006] In order to solve the above-mentioned technical problems / achieve the above-mentioned objectives, or at least partially solve the above-mentioned technical problems / achieve the above-mentioned objectives, as a first aspect of this application, a waterproof anchoring agent is provided, comprising unsaturated polyester resin, silicate, silane coupling agent, reactive diluent, curing agent, accelerator and quick-dissolving adhesive powder.
[0007] Optionally, by weight, it includes:
[0008] 80-120 parts unsaturated polyester resin, 300-500 parts silicate, 1-5 parts silane coupling agent, 1-5 parts reactive diluent, 5-10 parts curing agent, 1-5 parts accelerator and 1-5 parts quick-dissolving adhesive powder.
[0009] Further optionally, the unsaturated polyester resin includes an ether-type unsaturated polyester resin; the silicate includes one or more of talc, mica, feldspar, and kaolinite; the silane coupling agent includes KH series silane coupling agents; the reactive diluent includes one or more of styrene, α-phenylmethylene, and methylpropyl acid monomer; the curing agent includes isocyanate; the accelerator includes one or more of N,N-dimethyl-p-toluidine, N,N-dimethylaniline, E4, calcium isooctanoate, and vanadium isooctanoate; and the instant adhesive powder includes one or more of SAP polymer instant adhesive powder, NS-1 instant adhesive powder, and XS-1 instant adhesive powder.
[0010] As a second aspect of this application, a method for preparing the aforementioned waterproof anchoring agent is provided, comprising:
[0011] Weigh out unsaturated polyester resin and silicate and stir evenly. During the stirring process, add silane coupling agent and reactive diluent evenly to obtain the first component.
[0012] Weigh out silicate, accelerator, curing agent and instant adhesive powder, and stir evenly to obtain the second component;
[0013] The first component and the second component constitute the waterproof anchoring agent.
[0014] As a third aspect of this application, the application of the waterproof anchoring agent described herein in anchoring construction is provided.
[0015] Optionally, the anchoring construction includes anchoring construction in shallowly buried water-rich strata.
[0016] As a fourth aspect of this application, an anchoring construction method is provided, comprising:
[0017] Drill holes in the pre-construction area, place the waterproof anchoring agent described in this application into the holes, and anchor them using an anchor drilling machine.
[0018] As a fifth aspect of this application, a method for evaluating waterproof anchoring agents is provided, comprising:
[0019] Concrete test blocks with anchor holes were prepared.
[0020] A water bag and anchoring agent are placed into the anchoring holes in the concrete test block, and anchoring is performed by an anchoring drill. The gel time is determined by contacting the surface anchoring agent. When the anchoring time reaches two hours, a pull-out test is performed. The anchoring agent includes a common non-waterproof anchoring agent as a reference and a waterproof anchoring agent to be tested.
[0021] Based on the peak pull-out strength of the anchoring agent and the residual strength after the peak pull-out strength of the anchoring agent drops, the anchoring strength enhancement coefficient k and the residual strength enhancement coefficient f are defined. The larger the value, the better the anchoring effect of the waterproof anchoring agent is compared with that of ordinary non-waterproof anchoring agent in shallow buried water-rich strata.
[0022] k = (F1 - F2) × v
[0023] f = [(F2-F2') / (F1-F1')] × v
[0024] Where v represents the percentage of water content in the anchor hole volume, F1 represents the peak pull-out strength of the waterproof anchor to be tested, F1' represents the residual strength of the waterproof anchor after the peak pull-out strength drops, F2 represents the peak pull-out strength of ordinary non-waterproof anchor, and F2' represents the residual strength of ordinary non-waterproof anchor after the peak pull-out strength drops.
[0025] This application prepares a waterproof resin anchoring agent by adjusting the raw materials, using isocyanate as a curing agent and high-energy particles (silicate) as fillers. This results in a high-strength, highly active, and water-resistant waterproof resin anchoring agent with excellent properties such as ultra-fast water absorption, rapid solidification, and high strength. Furthermore, based on the relevant requirements of MT146.1-2011, a new evaluation method is provided to test the mechanical properties of the waterproof anchoring agent. A specially designed anchor pull-out test verifies the waterproofing capability of the anchoring agent, and a comparison with ordinary resin anchoring agents confirms its applicability in shallow, water-rich strata. Attached Figure Description
[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.
[0027] Figure 1 The diagram shows the anchoring mechanism of the novel waterproof anchoring agent of this application and the traditional anchoring agent;
[0028] Figure 2 The diagram shown is a schematic of the anchoring process for the pull-out test of the waterproof performance of this application.
[0029] Figure 3 The figure shows the anchoring load-displacement curves of the waterproof anchoring agent and other anchoring agents in Embodiment 1 of this application. Detailed Implementation
[0030] This application discloses a waterproof anchoring agent, its preparation method, application, and performance evaluation method. Those skilled in the art can refer to this document and appropriately modify the process parameters to achieve the desired result. It is particularly important to note that all similar substitutions and modifications are obvious to those skilled in the art and are considered to be included in this application. The methods described in this application have been described through preferred embodiments. Those skilled in the art can obviously modify or appropriately change and combine the products, methods, and applications described herein without departing from the content, spirit, and scope of this application to realize and apply the technology of this application. Obviously, the described embodiments are only some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.
[0031] It should be noted that, in this document, relational terms such as "first" and "second," "step 1" and "step 2," and "(1)" and "(2)" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Moreover, the embodiments and features described in this application can be combined with each other without conflict.
[0032] In a first aspect of this application, a waterproof anchoring agent is provided, comprising an unsaturated polyester resin, a silicate, a silane coupling agent, an active diluent, a curing agent, an accelerator, and an instant adhesive powder.
[0033] In some embodiments of this application, the components, by weight, include:
[0034] 80-120 parts unsaturated polyester resin, 300-500 parts silicate, 1-5 parts silane coupling agent, 1-5 parts reactive diluent, 5-10 parts curing agent, 1-5 parts accelerator and 1-5 parts quick-dissolving adhesive powder.
[0035] In other embodiments of this application, by weight, it includes:
[0036] 100 parts unsaturated polyester resin, 400 parts silicate, 1-5 parts silane coupling agent, 1-5 parts reactive diluent, 5-10 parts curing agent, 1-5 parts accelerator and 1-5 parts quick-dissolving adhesive powder.
[0037] In some embodiments of this application, the anchoring agent consists of two components, A and B. Component A, referred to as resin putty, is an unsaturated polyester resin and high-energy particles (i.e., silicates, general formula R). m (SiO3) n Or R(SiO3) n ), silane coupling agent and reactive diluent; component B is high-energy particles (i.e. silicates, general formula R) m (SiO3) n Or R(SiO3) n The components include curing agent, accelerator, and quick-setting adhesive powder. In some other embodiments of this application, the silicate content in components A and B is the same.
[0038] In some embodiments of this application, the unsaturated polyester resin includes ether-type unsaturated polyester resin. Ether-type unsaturated polyester resin is usually modified with ether substances. That is, during the production of unsaturated polyester, ether substances are added simultaneously when the original diacid and diol raw materials are added to the reactor, and the reaction is carried out normally to obtain ether-modified unsaturated polyester resin, such as ethylene glycol monoallyl ether modified unsaturated polyester resin. Compared with ketone-type and ester-type unsaturated polyester resins, ether-type unsaturated polyester resin has better water resistance, and the strength and time of bonding and hardening under water-rich conditions are not affected by water.
[0039] In some embodiments of this application, the silicate includes one or more of talc powder, mica powder, feldspar powder, and kaolinite powder, preferably two, in a mass ratio of 1-10:1-10, for example, talc powder:mica powder = 2:7 or feldspar powder:mica powder = 3:7 or a mixed silicate composed of equal proportions of each silicate, wherein the mica powder is 50-200 mesh, and the talc powder / feldspar powder is 200-400 mesh; the silane coupling agent includes KH series silane coupling agents, such as KH550, KH560, KH570, etc., wherein KH550 is more effective than KH560 and KH570; the reactive diluent is used to reduce the viscosity of the resin, including but not limited to styrene, α-phenylene, methylpropyl acid monomer, etc.; the curing agent The curing agent includes isocyanates, such as diisocyanates, more specifically hexamethylene diisocyanate (HDI), which is mainly formed by the addition of HDI monomers to water to obtain HDI biuret, followed by hydrophilic modification with polyethers to form a curing agent with good hydrophilicity; the accelerator includes one or more of N,N-dimethyl-p-toluidine, N,N-dimethylaniline, E4, calcium isooctanoate, and vanadium isooctanoate, preferably two, in a mass ratio of 1-10:1-10, for example, a mixed accelerator of N,N-dimethyl-p-toluidine:N,N-dimethylaniline = 4:6; the instant adhesive powder includes one or more of SAP polymer instant adhesive powder, NS-1 instant adhesive powder, and XS-1 instant adhesive powder, with SAP polymer instant adhesive powder being more effective.
[0040] In some embodiments of this application, the waterproof anchoring agent consists of two components, A and B. Component A, referred to as resin putty, comprises 100 parts of unsaturated polyester resin and high-energy particles (i.e., silicates, general formula R). m (SiO3) n Or R(SiO3) n Component B consists of 200 parts of KH550 coupling agent, 1-5 parts of reactive diluent (styrene diluent), and 1-5 parts of high-energy particles (i.e., silicates, general formula R). m (SiO3) n Or R(SiO3) n 200 parts, curing agent isocyanate (DI) 5-10 parts, accelerator DMT (N,N-dimethyl-p-toluidine) and DMA (N,N-dimethylaniline) 1-5 parts, and SAP polymer quick-dissolving powder 1-5 parts.
[0041] Taking the above-mentioned waterproof anchoring agent as an example, the relationship between the functions of each component is explained. Component A, resin mortar, is the main component of the anchoring agent. The active diluent, styrene diluent, can reduce the consistency of the resin. KH550 coupling agent has reactive groups that combine with silicate high-energy particles and resin. Through chemical coupling reaction on the surface of silicate high-energy particles, it can achieve good adhesion and adsorption with the resin, significantly improving the compactness, strength, and adhesion of the cross-linked polymer. At the same time, the resin anchoring agent with silicate high-energy particles as inorganic fillers will undergo silanization reaction with anchoring time, reacting with carbon dioxide in the air to generate silicon-oxygen-silicon bonds, as shown in formula (1). It forms petrified material in 35-40 days. Unlike the physical adhesion of traditional anchoring agents, this bonded anchor rod forms a dense cross-linked three-dimensional chemical bond bond with the rock, resulting in higher strength.
[0042] R m (SiO3) n +CO2→Si+O+Si (1)
[0043] Component B mainly functions to cure the resin putty. The curing agent isocyanate (DI) catalyzes the overflow of resin molecules, and the chain-linked silicate particles form a tight cross-linked structure, thereby improving the curing rate. The molecule contains isocyanate (-N=C=O), which can react with the activated hydrogen in the resin to generate urea bonds and urea acid bonds. The reaction principle is as shown in formula (2), thereby forming a high molecular polymer. At the same time, the isocyanate group (NCO) can ensure the free dispersion of the curing agent in water, which can tightly combine the resin and silicate high-energy particles into a cross-linked three-dimensional structure, which has high strength and thus improves the overall durability and rigidity.
[0044] RN=C=O+H-R'→R-NH-COOR' (2)
[0045] R and R' represent organic groups, depending on the groups in the isocyanate and unsaturated polyester resin. NH represents an amine group and COO represents an ester group.
[0046] Accelerators DMT (N,N-dimethyl-p-toluidine) and DMA (N,N-dimethylaniline) are used to adjust the gel curing time and the thermal stability of the resin; SAP polymer quick-dissolving powder has high water absorption, preventing water diffusion in the resin, and swells upon contact with water to act as a filler, enhancing the adhesion between the resin and the anchor rod and the rock. All components effectively ensure anchoring performance in shallow, water-rich strata under seepage or water spray conditions. The anchoring mechanism of this novel waterproof anchoring agent compared to traditional anchoring agents is as follows: Figure 1 As shown.
[0047] In a second aspect of this application, a method for preparing the aforementioned waterproof anchoring agent is provided, comprising:
[0048] Weigh out unsaturated polyester resin and silicate and stir evenly. During the stirring process, add silane coupling agent and reactive diluent evenly to obtain the first component.
[0049] Weigh out silicate, accelerator, curing agent and instant adhesive powder, and stir evenly to obtain the second component;
[0050] The first component and the second component constitute the waterproof anchoring agent.
[0051] In some embodiments of this application, the stirring speed is 100-150 r / min and the stirring time is 15 min; the first component and the second component correspond to the aforementioned component A and component B, and can be respectively loaded into a polyester film.
[0052] In a third aspect of this application, compared with ordinary resin anchoring agents in shallow, water-rich strata, the setting time is faster, the anchoring effect is better, and the anchoring failure rate is greatly reduced. Based on this, the application of the waterproof anchoring agent described in this application in anchoring construction is provided. More specifically, the anchoring construction includes anchoring construction in shallow, water-rich strata.
[0053] In a fourth aspect of this application, an anchoring construction method is provided, comprising:
[0054] Drill holes in the pre-construction area, place the waterproof anchoring agent described in this application into the holes, and anchor them using an anchor drilling machine.
[0055] In a fifth aspect of this application, an evaluation method for waterproof anchoring agents is provided based on the relevant requirements of MT146.1-2011, comprising:
[0056] Concrete test blocks with anchor holes were prepared.
[0057] A water bag and anchoring agent are placed into the anchoring holes in the concrete test block, and anchoring is performed by an anchoring drill. The gel time is determined by contacting the surface anchoring agent. When the anchoring time reaches two hours, a pull-out test is performed. The anchoring agent includes a common non-waterproof anchoring agent as a reference and a waterproof anchoring agent to be tested.
[0058] Based on the peak pull-out strength of the anchoring agent and the residual strength after the peak pull-out strength of the anchoring agent drops, the anchoring strength enhancement coefficient k and the residual strength enhancement coefficient f are defined. The larger the value, the better the anchoring effect of the waterproof anchoring agent is compared with that of ordinary non-waterproof anchoring agent in shallow buried water-rich strata.
[0059] k = (F1 - F2) × v
[0060] f = [(F2-F2') / (F1-F1')] × v
[0061] Where v represents the percentage of water content in the anchor hole volume, F1 represents the peak pull-out strength of the waterproof anchor to be tested, F1' represents the residual strength of the waterproof anchor after the peak pull-out strength drops, F2 represents the peak pull-out strength of ordinary non-waterproof anchor, and F2' represents the residual strength of ordinary non-waterproof anchor after the peak pull-out strength drops.
[0062] In the comparative experiments provided in this application, unless otherwise specified, all experimental conditions and materials remain consistent to ensure comparability. All materials used in this application are commercially available.
[0063] The following provides a further description of the waterproof anchoring agent, its preparation method, application, and performance evaluation method provided in this application.
[0064] Example 1:
[0065] Waterproof anchoring agent of this invention:
[0066] (1) Weigh 100 parts of ethylene glycol monoallyl ether modified unsaturated polyester resin (diacid: isophthalic anhydride; diol: ethylene glycol) and 200 parts of silicate high-energy particles (mica powder: talc powder = 7:2, mica powder 50-200 mesh, talc powder 200-400 mesh) using an electronic balance. Stir for 15 minutes at a speed of 100-150 r / min. During this process, add 3 parts of KH550 coupling agent and 1 part of styrene diluent. After preparation, place the mixture into a polyester film as component A.
[0067] (2) Add 200 parts of silicate high-energy particles (mica powder: talc powder = 7:2, mica powder 50-200 mesh, talc powder 200-400 mesh), 1 part of accelerator (DMT: DMA = 4:6), 10 parts of curing agent hexamethylene diisocyanate, and 5 parts of SAP polymer quick-dissolving powder to a mixing tank in sequence, and stir for 15 minutes at a speed of 100-150 r / min. After preparation, place it in a polyester film as component B.
[0068] Ordinary anchoring agent:
[0069] Referring to the above preparation method, component A, resin mortar, consists of 100 parts of phthalic acid-type unsaturated polyester resin and 200 parts of stone powder, which are placed in a polyester film; component B consists of 200 parts of limestone powder (coarse stone powder and fine stone powder in a 1:1 ratio, coarse stone powder 10-50 mesh, fine stone powder 100-200 mesh), 10 parts of benzoyl peroxide curing agent, and 1 part of accelerator (DMT:DMA = 4:6), which are placed in a polyester film.
[0070] Comparative Example 1:
[0071] Referring to the preparation method in Example 1, component A resin mortar consists of 100 parts of ethylene glycol monoallyl ether modified unsaturated polyester resin, 200 parts of silicate high-energy particles (mica powder: talc powder = 7:2, mica powder 50-200 mesh, talc powder 200-400 mesh), 3 parts of KH550 coupling agent, and 1 part of styrene diluent. Component B consists of 200 parts of silicate high-energy particles (mica powder: talc powder = 7:2, mica powder 50-200 mesh, talc powder 200-400 mesh), 10 parts of benzoyl peroxide curing agent, 1 part of accelerator (DMT: DMA = 4:6), and 5 parts of SAP high-polymer quick-dissolving adhesive powder.
[0072] Comparative Example 2:
[0073] Referring to the preparation method in Example 1, component A of the resin mortar consists of 100 parts of ethylene glycol monoallyl ether modified unsaturated polyester resin, 200 parts of silicate high-energy particles (mica powder: talc powder = 7:2, mica powder 50-200 mesh, talc powder 200-400 mesh), 3 parts of KH550 coupling agent, and 1 part of styrene diluent, an active diluent. Component B consists of 200 parts of silicate high-energy particles (mica powder: talc powder = 7:2, mica powder 50-200 mesh, talc powder 200-400 mesh), 10 parts of hydrophilic hexamethylene diisocyanate curing agent, 1 part of accelerator (DMT: DMA = 4:6), and 5 parts of NS-1 quick-dissolving adhesive powder.
[0074] Experimental example:
[0075] Concrete test blocks were fabricated to simulate the surrounding rock conditions in shallow, water-rich areas. Water bags represented water accumulation or seepage within the hole during anchoring in these areas. The anchoring holes were obtained by demolding pre-embedded steel pipes and were roughened before anchoring to simulate the roughness of a real borehole. Anchoring agents of components A and B, along with the water bags, were placed into the anchoring holes, and anchoring was performed using an anchoring drill. The gel time was determined by contact with the surface anchoring agent. After two hours of anchoring, a pull-out test was conducted. The anchoring diagram is shown below. Figure 2 The results are shown Figure 3 .
[0076] Figure 3 The results show the pull-out test results of anchoring anchors with different anchoring agents using tension jacks. According to the curve, the waterproof anchoring agent in Example 1 has the largest ultimate pull-out load and peak strength. In Comparative Example 2, replacing the quick-dissolving adhesive powder with NS-1 will correspondingly reduce the ultimate pull-out load and peak strength.
[0077] Comparative Example 1, which uses a conventional benzoyl peroxide curing agent, showed a significant reduction in its ultimate tensile load and peak strength.
[0078] Ordinary anchoring agents have the worst ultimate pull-out load and peak strength, which is consistent with the anchoring effect under shallow buried water-rich conditions. Ordinary anchoring agents have a very poor anchoring effect or cannot anchor at all.
[0079] Based on the above experimental results, this embodiment provides two calculation formulas: First, to evaluate the anchoring effect of waterproof anchoring agents in water-rich conditions using ordinary anchoring agents as a basis. Second, to define the anchoring strength enhancement coefficient k and the residual strength enhancement coefficient f based on the peak pull-out strength of the anchoring agent and the residual strength after the peak pull-out strength drops. k > 0 indicates positive optimization, and the larger the value, the better the anchoring effect and the better the performance of the waterproof anchoring agent. k < 0 indicates negative optimization, meaning no effect. f represents the smaller the strength loss after anchoring failure, i.e., the larger the residual strength, and the better the anchoring effect; similarly, the larger the value, the better the effect.
[0080] In summary, the larger the values of k and f, the better the anchoring effect of the waterproof anchoring agent compared to ordinary non-waterproof anchoring agents in shallow, water-rich strata.
[0081] k = (F1 - F2) × v
[0082] f = [(F2-F2') / (F1-F1')] × v
[0083] Where v represents the percentage of water content in the anchor hole volume, F1 represents the peak pull-out strength of the waterproof anchor to be tested, F1' represents the residual strength of the waterproof anchor after the peak pull-out strength drops, F2 represents the peak pull-out strength of ordinary non-waterproof anchor, and F2' represents the residual strength of ordinary non-waterproof anchor after the peak pull-out strength drops.
[0084] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A waterproof anchoring agent, characterized in that, By weight, it includes: 80-120 parts unsaturated polyester resin, 300-500 parts silicate, 1-5 parts silane coupling agent, 1-5 parts reactive diluent, 5-10 parts curing agent, 1-5 parts accelerator and 1-5 parts quick-dissolving adhesive powder; The unsaturated polyester resin is an ether-type unsaturated polyester resin; the silicate is one or more of talc powder, mica powder, feldspar powder, and kaolinite powder; the silane coupling agent includes KH series silane coupling agents; the reactive diluent includes one or more of styrene, α-phenylmethylene, and methylpropyl acid monomer; the curing agent is isocyanate; the accelerator includes one or more of N,N-dimethyl-p-toluidine, N,N-dimethylaniline, E4, calcium isooctanoate, and vanadium isooctanoate; and the instant adhesive powder is SAP polymer instant adhesive powder.
2. The method for preparing the waterproof anchoring agent according to claim 1, characterized in that, include: Weigh out unsaturated polyester resin and silicate and stir evenly. During the stirring process, add silane coupling agent and reactive diluent evenly to obtain the first component. Weigh out the same amount of silicate as the silicate in the first component, and mix it with the accelerator, curing agent and quick-dissolving adhesive powder to obtain the second component; The first component and the second component constitute the waterproof anchoring agent, and the amount of silicate in the first component and the second component is the total amount of silicate in the waterproof anchoring agent.
3. The application of the waterproof anchoring agent according to claim 1 in anchoring construction.
4. The application according to claim 3, characterized in that, The anchoring construction includes anchoring construction in shallow buried water-rich strata.
5. An anchoring construction method, characterized in that, include: Drill holes in the pre-construction area, place the waterproof anchoring agent as described in claim 1 into the holes, and anchor it using an anchor drilling machine.
Citation Information
Patent Citations
Polymer thixotropic anchoring agent for grouting anchor rod
CN116904012A