CN112341043A - High-strength flexible poly-grain microporous sand plate and preparation method thereof - Google Patents
High-strength flexible poly-grain microporous sand plate and preparation method thereof Download PDFInfo
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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
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/14—Polyepoxides
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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
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
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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
- C04B2111/52—Sound-insulating materials
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Epoxy Resins (AREA)
Abstract
The invention belongs to the technical field of sound barriers, and particularly relates to a high-strength flexible poly-grain microporous sand plate and a preparation method thereof, wherein the high-strength flexible poly-grain microporous sand plate comprises, by weight, 92-98 parts of round-grain sand, 2-5 parts of modified epoxy resin and 0.8-1.8 parts of modified epoxy resin curing agent. The high-strength flexible poly-grain microporous sand plate prepared by the method has the characteristics of light weight, less pollution, higher compression strength, bending strength and bending strength, smaller brittleness and low manufacturing cost.
Description
Technical Field
The invention belongs to the technical field of sound barriers, and particularly relates to a high-strength flexible poly-grain microporous sand plate and a preparation method thereof.
Background
In the prior metal-based sound barriers such as high-speed rails, light rails, expressways and the like, glass wool, foamed aluminum or polymer particle sand boards are mostly adopted as the built-in sound-absorbing filling materials, and the materials have application advantages, but have a plurality of defects, specifically:
the sound absorption coefficient of the glass wool is in the range of 0.75-0.85, although the glass wool is not easy to degrade for a long time and is easy to cause secondary pollution to the environment, the glass wool is widely applied because the price is relatively cheap, but the domestic glass wool has the problems of pulverization phenomenon, environmental pollution, vibration accumulation, easy water absorption, moisture absorption and serious reduction of sound absorption capability after long-term use;
the sound absorption coefficient of the foamed aluminum is within the range of 0.75, the sound absorption coefficient meeting the standard requirement of the urban viaduct sound barrier is within the range of 200-4000Hz, a resonant cavity of 40mm per month can be formed, the sound absorption effect is further improved, but the foamed aluminum serving as a built-in sound absorption material must meet the strength requirement, so the thickness requirement of the foamed aluminum is more than 2cm, and the comprehensive cost is relatively high;
the sound absorption coefficient of the polymerized particle sand plate is between 0.85 and 0.95, the forming process is simple, and the sound absorption coefficient is higher; however, the polymerized particle sand plate has large brittleness, is easy to damage, is mostly 2cm in thickness, and has a single square weight of 30 kg.
In summary, how to prepare a high-strength flexible poly-grain microporous sand plate is used for solving the problems of heavy weight of a sound barrier, secondary environmental pollution, high brittleness and high manufacturing cost, which are urgent needs to be solved in the field of technology.
Disclosure of Invention
The invention aims to solve the technical problems and provides a high-strength flexible poly-grain microporous sand plate and a preparation method thereof, which mainly solve the problems of heavy weight of a sound barrier, secondary environmental pollution, high brittleness, high manufacturing cost and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the high-strength flexible granular microporous sand plate is prepared with round granular sand 92-98 weight portions, modified epoxy resin 2-5 weight portions and modified epoxy resin curing agent 0.8-1.8 weight portions.
Preferably, the modified epoxy resin is a mixture of bisphenol A epoxy resin, bisphenol F epoxy resin, a reactive diluent, carboxyl-terminated liquid nitrile rubber and a coupling agent.
Preferably, the modified epoxy resin is prepared from the following raw materials in parts by weight: 35-40 parts of bisphenol A epoxy resin, 32-40 parts of bisphenol F epoxy resin, 10-15 parts of reactive diluent, 10-15 parts of carboxyl-terminated liquid nitrile rubber and 3-5 parts of coupling agent.
Preferably, the bisphenol A epoxy resin is one of E-51 and E-44, the reactive diluent is one of 1, 4-butanediol diglycidyl ether, 1, 6-hexanediol diglycidyl ether and alkyl glycidyl ether, and the coupling agent is one of HK-560, HK-570 and HK 590.
Preferably, the modified epoxy resin curing agent is a mixture of a polyether amine curing agent, an alicyclic amine curing agent, an aliphatic amine curing agent and an accelerator.
Preferably, the modified epoxy resin curing agent is prepared from the following raw materials in parts by weight: 30-40 parts of polyether amine curing agent, 12-20 parts of alicyclic amine curing agent, 40-45 parts of aliphatic amine curing agent and 8-10 parts of accelerator.
Preferably, the polyether amine curing agent is one of imported D230 and D400, the alicyclic amine curing agent is one of imported IPDA and APHA, the fatty amine curing agent is one of diethylenetriamine, triethylenetetramine and tetraethylenepentamine, and the accelerator is one of salicylic acid, benzyl dimethylamine and K54.
Preferably, the average particle size of the round-grained sand is 1-2 mm.
The preparation method of the high-strength flexible poly-grain microporous sand plate comprises the following steps:
s1, fully stirring and mixing the components to prepare modified epoxy resin, fully stirring and mixing the components to prepare a modified epoxy resin curing agent, sequentially adding the prepared modified epoxy resin and the modified epoxy resin curing agent into a container, and mixing and stirring for 3-5 minutes to obtain a mixture A;
s2, adding the round-grained sand into the mixture A, and mixing and stirring for 3-5 minutes to obtain a mixture B;
s3, taking a die, pouring the mixture B into 1/2 of the depth of the die, laying a layer of fiber mesh cloth, pouring the rest 1/2 mixture B onto the fiber mesh cloth into the die, pressing and forming, putting the die into a baking oven with the baking temperature of 55-65 ℃ for baking for 50-60min, demolding, and curing at room temperature for 50-60 min.
Preferably, the fiber mesh cloth in the step (S3) is a basalt fiber mesh cloth.
Compared with the prior art, the invention has the beneficial effects that:
1. the high-strength flexible poly-grain microporous sand plate prepared by the invention is formed by stirring, mixing and pressing modified epoxy resin, a modified epoxy resin curing agent and round grain sand, has high compressive strength, high flexural strength and high bending strength, has the thickness of 5-8 mm, has the sound absorption coefficient of more than 0.85, has the weight of only about 15kg per square, is good in flexibility, light and environment-friendly, and is a substitute for a high-quality filling material arranged in a metal-based sound barrier. Compared with glass wool, the sound absorption coefficient is higher, and secondary pollution to the environment is avoided; compared with foamed aluminum, the manufacturing cost is lower, and the production cost is reduced; compared with the polymerized particle sand plate, the polymer particle sand plate is lighter in weight, has flexibility, can be bent at 45 degrees, is not fragile and is not easy to damage.
2. The previous preparation process of the poly-grain microporous sand plate mostly adopts single epoxy resin and single curing agent, and the epoxy resin and the curing agent which are not compounded have many defects, such as: poor water resistance, large brittleness, poor yellowing resistance, low physical and mechanical properties and long curing time. In actual production operation, due to the fact that unmodified epoxy resin is high in viscosity and high in operation difficulty, most produced products are poor in surface compactness and uneven in gaps, and appearance quality of the materials is affected; the modified epoxy resin is adopted, two kinds of epoxy resin are added for compounding, the reactive diluent and the liquid nitrile rubber are added, and the toughness and the flexibility of the resin are improved. The modified epoxy resin and the modified epoxy resin curing agent prepared by the invention greatly improve the toughness, flexibility, strength, curing time, water resistance, yellowing resistance, acid resistance and alkali resistance of the granular microporous sand plate.
3. The basalt fiber gridding cloth is arranged in the middle of the high-strength flexible poly-grain microporous sand plate, and the basalt fiber gridding cloth takes basalt fiber woven fabric as a base material and is coated with a macromolecular emulsion-resistant soaking coating, so that the basalt fiber gridding cloth has good alkali resistance, flexibility and warp-wise high tensile resistance, can be widely used for inner and outer walls of buildings, and is fireproof, heat-insulating, crack-resistant and the like, and each performance of the basalt fiber gridding cloth is superior to that of glass fiber; the basalt fiber mesh cloth, the modified epoxy resin curing agent and the round-grained sand participate in curing reaction together, so that the bending strength and the bending strength of the material are improved, the adhesive proportion is reasonably selected, the strength of the sound absorption plate is ensured, a large number of small communicated gaps are contained in the sound absorption plate, the sound absorption coefficient of the material is ensured, and the sound absorption effect of the material is improved.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to these examples. 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.
Example 1
The high-strength flexible granular microporous sand plate is prepared with round grains of sand 92 weight portions with average grain size of 1mm, modified epoxy resin 3 weight portions and modified epoxy resin curing agent 1.3 weight portions.
The modified epoxy resin is prepared from the following raw materials in parts by weight: e-4440 parts, bisphenol F epoxy resin 32 parts, 1, 4-butanediol diglycidyl ether 10 parts, carboxyl-terminated liquid nitrile rubber 15 parts and HK-5703 parts.
The modified epoxy resin curing agent is prepared from the following raw materials in parts by weight: d23030 parts, APHA 20 parts, tetraethylenepentamine 40 parts and salicylic acid 10 parts.
The preparation method of the high-strength flexible poly-grain microporous sand plate comprises the following steps:
s1, fully stirring and mixing the components to prepare modified epoxy resin, fully stirring and mixing the components to prepare a modified epoxy resin curing agent, sequentially adding the prepared modified epoxy resin and the modified epoxy resin curing agent into a container, and mixing and stirring for 3 minutes to obtain a mixture A;
s2, adding the round-grained sand into the mixture A, and mixing and stirring for 3 minutes to obtain a mixture B;
s3, taking a die, pouring the mixture B into 1/2 of the depth of the die, laying a layer of basalt fiber mesh cloth, pouring the rest 1/2 mixture B into the die on the fiber mesh cloth, pressing and forming, putting the die into a baking oven with the baking temperature of 55 ℃ for baking for 50min, demolding, and curing at room temperature for 50 min.
Example 2
The high-strength flexible poly-grain microporous sand plate is prepared from (by weight parts) round-grain sand 95 with average grain diameter of 1mm, modified epoxy resin 2, and modified epoxy resin curing agent 0.8.
The modified epoxy resin is prepared from the following raw materials in parts by weight: e-5135 parts, bisphenol F epoxy resin 35 parts, 1, 6-hexanediol diglycidyl ether 15 parts, carboxyl-terminated liquid nitrile rubber 10 parts and HK-5605 parts.
The modified epoxy resin curing agent is prepared from the following raw materials in parts by weight: 40 parts of D40040 parts, 12 parts of IPDA (isophorone diisocyanate), 40 parts of triethylene tetramine and 548 parts of K.
The preparation method of the high-strength flexible poly-grain microporous sand plate is characterized by comprising the following steps of:
s1, fully stirring and mixing the components to prepare modified epoxy resin, fully stirring and mixing the components to prepare a modified epoxy resin curing agent, sequentially adding the prepared modified epoxy resin and the modified epoxy resin curing agent into a container, and mixing and stirring for 4 minutes to obtain a mixture A;
s2, adding the round-grained sand into the mixture A, and mixing and stirring for 4 minutes to obtain a mixture B;
s3, taking a die, pouring the mixture B into 1/2 of the depth of the die, laying a layer of basalt fiber mesh cloth, pouring the rest 1/2 mixture B into the die on the fiber mesh cloth, pressing and forming, putting the die into a baking oven with the baking temperature of 60 ℃ for baking for 55min, demolding, and curing at room temperature for 55 min.
Example 3
The high-strength flexible poly-grain microporous sand plate is prepared from (by weight parts) round-grain sand 98 parts with average grain size of 2mm, modified epoxy resin 5 parts, and modified epoxy resin curing agent 1.8 parts.
The modified epoxy resin is prepared from the following raw materials in parts by weight: e-5140 parts, bisphenol F type epoxy resin 40 parts, alkyl glycidyl ether 10 parts, carboxyl-terminated liquid nitrile rubber 15 parts and HK-5905 parts.
The modified epoxy resin curing agent is prepared from the following raw materials in parts by weight: d40030 parts, IPDA 15 parts, diethylenetriamine 45 parts and benzyl dimethylamine 10 parts.
The preparation method of the high-strength flexible poly-grain microporous sand plate is characterized by comprising the following steps of:
s1, fully stirring and mixing the components to prepare modified epoxy resin, fully stirring and mixing the components to prepare a modified epoxy resin curing agent, sequentially adding the prepared modified epoxy resin and the modified epoxy resin curing agent into a container, and mixing and stirring for 5 minutes to obtain a mixture A;
s2, adding the round-grained sand into the mixture A, and mixing and stirring for 5 minutes to obtain a mixture B;
s3, taking a die, pouring the mixture B into 1/2 of the depth of the die, laying a layer of basalt fiber mesh cloth, pouring the rest 1/2 mixture B into the die on the fiber mesh cloth, pressing and forming, putting the die into a baking oven with the baking temperature of 65 ℃ for baking for 60min, demolding, and curing at room temperature for 60 min.
Comparative example 1
The difference from example 1 is: the modified epoxy resin is prepared from the following raw materials in parts by weight: e-4450 parts, bisphenol F epoxy resin 20 parts, 1, 4-butanediol diglycidyl ether 20 parts, carboxyl-terminated liquid nitrile rubber 20 parts and HK-5708 parts, and the rest of the steps and parameters are the same as those of example 1.
Comparative example 2
The difference from example 1 is: the modified epoxy resin curing agent is prepared from the following raw materials in parts by weight: d23050 parts, APHA 30 parts, tetraethylenepentamine 25 parts, salicylic acid 5 parts, and the rest steps and parameters are the same as those in example 1.
Comparative example 3
The difference from example 1 is: the modified epoxy resin curing agent is prepared from the following raw materials in parts by weight: d23030 parts, tetraethylenepentamine 40 parts, salicylic acid 10 parts, and the rest steps and parameters are the same as those in example 1.
Comparative example 4
The difference from example 1 is: the modified epoxy resin curing agent is prepared from the following raw materials in parts by weight: APHA 20 parts, tetraethylenepentamine 40 parts, salicylic acid 10 parts, the rest steps and parameters are the same as example 1.
Comparative example 5
The difference from example 1 is: the modified epoxy resin curing agent is prepared from the following raw materials in parts by weight: d23030 parts, APHA 20 parts and salicylic acid 10 parts, and the rest steps and parameters are the same as those in example 1.
Comparative example 6
The difference from example 1 is: in the step S3, the basalt fiber mesh cloth is removed, a mold is taken, the mixture B is poured into the mold for press molding, the mold is placed into a baking oven with the baking temperature of 55 ℃ for baking for 50min, the mold is demolded and cured for 50min at room temperature, and the other steps and parameters are the same as those of the example 1.
Experimental example 1: the invention relates to the quality condition of a high-strength flexible poly-grain microporous sand plate
In the experiment, 150 moulds with the specification of 200mm × 100mm × 8mm are used for preparing the granular polymer microporous sand plate and divided into 3 groups, namely an embodiment 1 group, an embodiment 2 group and an embodiment 3 group, wherein the flexural strength and the compressive strength of each group are tested by using a universal testing machine produced by Jinan Square-round testing equipment Limited company, the surface density is tested by using a surface density measuring instrument produced by Kaiduo Intelligent science and technology (Shanghai) Limited company, and the sound absorption coefficient is tested according to the standard of GB/T16731-1997 sound absorption performance grading of sound absorption products for buildings. The specific quality of each group is compared in table 1.
TABLE 1 quality evaluation tables of examples 1 to 3 of the present invention
As can be seen from Table 1, the agglomerated particle microporous sand plate of the present application has a flexural strength MPa, a compressive strength MPa and an areal density kg/m2And the technical indexes such as sound absorption coefficient and the like are higher than the standard requirement, and the method has good application prospect.
Experimental example 2: the influence of different specific gravities of the raw materials on the high-strength flexible poly-grain microporous sand plate
In this experiment, 150 molds of 200mm × 100mm × 8mm size were used to prepare the agglomerated microporous sand plate, and the agglomerated microporous sand plate was divided into 3 groups, which were named as example 1 group, comparative example 1 group and comparative example 2 group, and the test of each index was performed according to the method of experiment 1, and the specific quality of each group is compared with that of table 2.
TABLE 2 evaluation chart of quality of each group of the agglomerated grain microporous sand plate
As can be seen from Table 2, the specific gravities of the respective raw materials of the modified epoxy resin and the modified epoxy resin curing agent, which are important components of the agglomerated microporous sand boards in the comparative example 1 group and the comparative example 2 group, are different from those of the examples of the present invention in the flexural strength, the compressive strength and the surface density of the board in kg/m2And the technical standards such as sound absorption coefficient are obviously inferior to those of the group of the embodiment 1, so that the different specific gravities of the components of the modified epoxy resin and the modified epoxy resin curing agent can influence various technical indexes of the prepared granular microporous sand plate, and the performance of the granular microporous sand plate can be reduced and meet the performance requirement of the invention if the specific gravities of the granular microporous sand plate exceed the specific gravity range of the invention.
Experimental example 3: influence of the composition of different raw materials on the quality of the high-strength flexible poly-grain microporous sand plate
In this experiment, 200 molds of 200mm × 100mm × 8mm size were used to prepare the agglomerated microporous sand plate, and the agglomerated microporous sand plate was divided into 4 groups, example 1 was set as 1 group, and comparative examples 3 to 5 were each set as 1 group, and the indexes were measured according to the method of example 1, and the specific quality of each group is shown in table 3.
TABLE 3 quality evaluation tables of comparative examples 3 to 5 of the present invention
As can be seen from table 3, the compositions of the raw materials of the modified epoxy resin curing agent in the granular cellular sand plate in the group of comparative examples 3 to 5 are different, and the technical standards such as the flexural strength, the compressive strength, the areal density, the sound absorption coefficient and the like are obviously inferior to those in the group of example 1, so that the composition of the different raw materials of the modified epoxy resin curing agent has a great influence on the performance of the granular cellular sand plate in the present application, and the modified epoxy resin curing agent made of the raw materials in any proportion can not improve the performance of the granular cellular sand plate.
Experimental example 4: influence of basalt fiber mesh on quality of high-strength flexible poly-grain microporous sand plate
In this experiment, 100 molds of 200mm × 100mm × 8mm size were used to prepare the granulated cellular sand boards, and the molds were divided into 2 groups, example 1 was set as group 1, comparative example 6 was set as group 1, and the test of each index was performed by the method in example 1, and the specific quality comparison of each group is shown in table 4.
TABLE 4 quality evaluation tables of inventive example 1 group and comparative example 6 group
It can be known from table 4 that the particle agglomeration microporous sand plate in the group of comparative examples 6 lacks basalt fiber mesh cloth, and the technical standards of the folding strength, the compressive strength, the areal density, the sound absorption coefficient and the like are obviously inferior to those of the group of example 1, so that the basalt fiber mesh cloth is an indispensable part of the particle agglomeration microporous sand plate, the composition of the basalt fiber mesh cloth is omitted, and the folding strength, the compressive strength and the sound absorption coefficient of the obtained particle agglomeration microporous sand plate can not meet the standard requirements.
It will be appreciated by persons skilled in the art that the above discussion of any embodiment is merely exemplary and is not intended to imply that the scope of the disclosure, including the claims, is limited to these examples, that features from any of the above embodiments, or from different embodiments, may be combined, that the steps of performing may be performed in any order, and that there are numerous other variations of the various aspects of the invention described above that are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The high-strength flexible poly-grain microporous sand plate is characterized by comprising, by weight, 92-98 parts of round grain sand, 2-5 parts of modified epoxy resin and 0.8-1.8 parts of modified epoxy resin curing agent.
2. The high-strength flexible poly-granular cellular sand plate according to claim 1, wherein the modified epoxy resin is a mixture of bisphenol A epoxy resin, bisphenol F epoxy resin, reactive diluent, carboxyl-terminated liquid nitrile rubber and coupling agent.
3. The high-strength flexible poly-grain cellular sand plate according to claim 2, wherein the modified epoxy resin is prepared from the following raw materials in parts by weight: 35-40 parts of bisphenol A epoxy resin, 32-40 parts of bisphenol F epoxy resin, 10-15 parts of reactive diluent, 10-15 parts of carboxyl-terminated liquid nitrile rubber and 3-5 parts of coupling agent.
4. The high strength flexible poly-granular micro-porous sand plate as claimed in claim 3, wherein the bisphenol A type epoxy resin is one of E-51 and E-44, the reactive diluent is one of 1, 4-butanediol diglycidyl ether, 1, 6-hexanediol diglycidyl ether and alkyl glycidyl ether, and the coupling agent is one of HK-560, HK-570 and HK 590.
5. The high-strength flexible poly-grain microporous sand plate according to claim 1, wherein the modified epoxy resin curing agent is a mixture of a polyether amine curing agent, an alicyclic amine curing agent, an aliphatic amine curing agent and an accelerator.
6. The high-strength flexible poly-grain microporous sand plate according to claim 5, wherein the modified epoxy resin curing agent is prepared from the following raw materials in parts by weight: 30-40 parts of polyether amine curing agent, 12-20 parts of alicyclic amine curing agent, 40-45 parts of aliphatic amine curing agent and 8-10 parts of accelerator.
7. The high-strength flexible poly-granular microporous sand plate according to claim 5, wherein the polyether amine curing agent is one of imported D230 and D400, the alicyclic amine curing agent is one of imported IPDA and APHA, the aliphatic amine curing agent is one of diethylenetriamine, triethylenetetramine and tetraethylenepentamine, and the accelerator is one of salicylic acid, benzyl dimethylamine and K54.
8. The high strength flexible poly-grain cellular sand sheet of claim 1, wherein said round grains have an average grain size of 1-2 mm.
9. The method for preparing the high-strength flexible poly-grain micro-porous sand plate according to any one of the claims 1 to 8, which is characterized by comprising the following steps:
s1, fully stirring and mixing the components to prepare modified epoxy resin, fully stirring and mixing the components to prepare a modified epoxy resin curing agent, sequentially adding the prepared modified epoxy resin and the modified epoxy resin curing agent into a container, and mixing and stirring for 3-5 minutes to obtain a mixture A;
s2, adding the round-grained sand into the mixture A, and mixing and stirring for 3-5 minutes to obtain a mixture B;
s3, taking a die, pouring the mixture B into 1/2 of the depth of the die, laying a layer of fiber mesh cloth, pouring the rest 1/2 mixture B onto the fiber mesh cloth into the die, pressing and forming, putting the die into a baking oven with the baking temperature of 55-65 ℃ for baking for 50-60min, demolding, and curing at room temperature for 50-60 min.
10. The method of claim 9, wherein the fiber mesh cloth is a basalt fiber mesh cloth in the step (S3).
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| 曾毅等主编: "《装甲防护材料技术》", 31 January 2014, 国防工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115536311A (en) * | 2022-09-27 | 2022-12-30 | 江苏万普交通科技有限公司 | Self-cleaning frequency-adaptive sound-absorbing rock and preparation method thereof |
| CN115536311B (en) * | 2022-09-27 | 2023-10-03 | 江苏万普交通科技有限公司 | Self-cleaning frequency-adaptive sound-absorbing rock and preparation method thereof |
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