CN113603390A - High-strength mineral composite material and preparation method thereof - Google Patents
High-strength mineral composite material and preparation method thereof Download PDFInfo
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- CN113603390A CN113603390A CN202110790805.0A CN202110790805A CN113603390A CN 113603390 A CN113603390 A CN 113603390A CN 202110790805 A CN202110790805 A CN 202110790805A CN 113603390 A CN113603390 A CN 113603390A
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- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 57
- 239000011707 mineral Substances 0.000 title claims abstract description 57
- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 62
- 239000003822 epoxy resin Substances 0.000 claims abstract description 52
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000000945 filler Substances 0.000 claims abstract description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004576 sand Substances 0.000 claims abstract description 16
- 239000004575 stone Substances 0.000 claims abstract description 16
- 239000004568 cement Substances 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 239000010881 fly ash Substances 0.000 claims abstract description 15
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 14
- 239000003292 glue Substances 0.000 claims abstract description 11
- 239000012615 aggregate Substances 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 26
- 229930185605 Bisphenol Natural products 0.000 claims description 22
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 18
- 239000003085 diluting agent Substances 0.000 claims description 15
- 125000003118 aryl group Chemical group 0.000 claims description 11
- 239000004850 liquid epoxy resins (LERs) Substances 0.000 claims description 11
- 239000007822 coupling agent Substances 0.000 claims description 10
- 239000002518 antifoaming agent Substances 0.000 claims description 8
- AHDSRXYHVZECER-UHFFFAOYSA-N 2,4,6-tris[(dimethylamino)methyl]phenol Chemical group CN(C)CC1=CC(CN(C)C)=C(O)C(CN(C)C)=C1 AHDSRXYHVZECER-UHFFFAOYSA-N 0.000 claims description 6
- HRWYHCYGVIJOEC-UHFFFAOYSA-N 2-(octoxymethyl)oxirane Chemical compound CCCCCCCCOCC1CO1 HRWYHCYGVIJOEC-UHFFFAOYSA-N 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- -1 modified alicyclic amine Chemical class 0.000 claims description 6
- 150000004982 aromatic amines Chemical class 0.000 claims description 5
- 239000013530 defoamer Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000000704 physical effect Effects 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 3
- 102220636508 ATPase inhibitor, mitochondrial_E51A_mutation Human genes 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
- C04B2111/2046—Shock-absorbing materials
-
- 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
-
- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Epoxy Resins (AREA)
Abstract
The invention belongs to the technical field of mineral composite materials, and discloses a high-strength mineral composite material and a preparation method thereof, wherein the high-strength mineral composite material comprises the following raw materials: glue, aggregate and filler; wherein the glue comprises a modified epoxy resin and a curing agent; the aggregate comprises fibers, sand materials with the grain diameter of 0.2-2mm and stone materials with the grain diameter of 3-15 mm; the filler comprises cement, mineral powder, fly ash and silica fume. The prepared high-strength mineral composite material can meet various physical property requirements of machine tool beds and base parts on the material, is low in comprehensive cost, high in strength, good in shock absorption, clean and environment-friendly in manufacturing process, and is a perfect substitute product for cast iron materials in the mechanical manufacturing industry.
Description
Technical Field
The invention relates to the technical field of mineral composite materials, in particular to a high-strength mineral composite material and a preparation method thereof.
Background
With the increasing level of technology, consumers have higher demands for mechanical products, and higher demands are made on the manufacturing industry. The machine tool is used as a basic core of the manufacturing industry, and the vibration, creep deformation, thermal deformation and other problems of basic components such as a machine body, a base and the like can have great influence on the overall performance and the processing precision of the machine tool.
At present, basic parts such as a lathe bed, a base and the like of a machine tool mainly adopt an iron casting or steel welding structure, the energy consumption is high, the carbon emission and the environmental pollution are serious, and the compressive strength of the existing cast iron lathe bed is 100MPa and lower, so that the market demand cannot be met.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a high-strength mineral composite material and a preparation method thereof, the prepared high-strength mineral composite material can meet various physical property requirements of machine tool bodies and base parts on the material, and is low in comprehensive cost, high in strength, good in shock absorption, clean and environment-friendly in manufacturing process and a perfect substitute product for cast iron materials in the mechanical manufacturing industry.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme.
The high-strength mineral composite material comprises the following raw materials: glue, aggregate and filler; wherein the glue comprises a modified epoxy resin and a curing agent; the aggregate comprises fibers, sand materials with the grain diameter of 0.2-2mm and stone materials with the grain diameter of 3-15 mm; the filler comprises cement, mineral powder, fly ash and silica fume.
Preferably, the modified epoxy resin comprises bisphenol epoxy resin E51, bisphenol epoxy resin NTEF170, hyperbranched aromatic liquid epoxy resin HTME2, an antifoaming agent DU607 and a coupling agent KH 650.
Further preferably, the modified epoxy resin comprises 40-45% of bisphenol epoxy resin E51, 40-45% of bisphenol epoxy resin NTEF170, 8-15% of hyperbranched aromatic liquid epoxy resin HTME2, 0.1-0.3% of defoaming agent DU607 and 1-2% of coupling agent KH 650.
Preferably, the curing agent comprises a main curing agent, an accelerator and a reactive diluent, and the proportion of the main curing agent, the accelerator and the reactive diluent is 85-90%, 1.5-3% and 5-15%, respectively.
More preferably, the main curing agent is a composite curing agent modified alicyclic amine curing agent LT8045 and/or a modified aromatic amine curing agent JK 215; the accelerant is DMP 30; the reactive diluent is XY746 octyl glycidyl ether.
Preferably, the aggregate comprises 3-5% of fiber, 30-45% of sand material with the grain diameter of 0.2-2mm and 55-65% of stone material with the grain diameter of 3-15 mm.
Preferably, the filler comprises 20-30% of cement, 20-30% of mineral powder, 20-35% of fly ash and 8-20% of silica fume.
Preferably, the glue, the aggregate and the filler respectively account for 9-15%, 70-84% and 7-15% of the total mass of the high-strength mineral composite material.
(II) a preparation method of the high-strength mineral composite material, which comprises the following steps:
step 1, mixing bisphenol epoxy resin E51, bisphenol epoxy resin NTEF170, hyperbranched aromatic liquid epoxy resin HTME2, a defoaming agent DU607 and a coupling agent KH650, and uniformly stirring to obtain modified epoxy resin;
step 2, mixing the main curing agent, the accelerator and the reactive diluent, and uniformly stirring to obtain a curing agent;
step 3, mixing the fibers, the sand material with the grain size of 0.2-2mm and the stone material with the grain size of 3-15mm, and uniformly stirring to obtain aggregate; mixing cement, mineral powder, fly ash and silica fume, and uniformly stirring to obtain a filler; mixing the aggregate and the filler, and uniformly stirring to obtain a mixture;
step 4, uniformly mixing the modified epoxy resin, the curing agent and the mixture, and adding the mixture into a vacuum extruder for extrusion to obtain an extrudate;
and 5, adding the extrudate into a mold, vibrating and filling, standing and demolding to obtain the high-strength mineral composite material.
Preferably, in the step 5, the shaking time is 30-40min, and the standing time is 8-12 h.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention applies hyperbranched technology to the modified epoxy resin system and applies the composite curing agent to cure at normal temperature, and finally the mineral composite material has compression strength, tensile strength, flexural strength, elastic modulus and thermal deformation temperature exceeding the national standards. The prepared high-strength mineral composite material has the advantages of high strength, small air holes, easiness in forming and good precision, the compressive strength can reach 190MPa, the tensile strength is 40-50, the elastic modulus is 45-50 (under the condition of no steel or carbon fiber), and the process technology is applied to produce moving parts of machine tools to provide good technical support.
(2) The high-strength mineral composite material prepared by the invention can meet various physical property requirements of machine tool beds and base parts on the material, and has the advantages of low comprehensive cost, high strength, good shock absorption and clean and environment-friendly manufacturing process, and the obtained mineral composite material is a perfect substitute product for basic components such as beds and bases of machine tools made of iron castings or steel in the mechanical manufacturing industry.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention.
Example 1
A method for preparing a high strength mineral composite comprising the steps of:
step 1, branching and modifying bisphenol epoxy resin E51A, bisphenol epoxy resin NTEF170B, hyperbranched aromatic liquid epoxy resin HTME2C, national institute antifoaming agent DU607 and coupling agent KH650 in a reaction kettle to obtain modified epoxy resin; wherein, the proportion of E51A, NTEF170B, HTME2C, DU607 and KH650 in the modified epoxy resin is respectively 44%, 43.8%, 10%, 0.2% and 2%.
Step 2, mixing the main curing agent, the accelerator DMP30 and the reactive diluent XY746 octyl glycidyl ether, and uniformly stirring to obtain the curing agent; wherein the main curing agent is a composite curing agent modified alicyclic amine curing agent LT8045 and a modified aromatic amine curing agent JK215 in a mass ratio of 1: 1; the proportion of the main curing agent, the accelerator and the reactive diluent in the curing agent is respectively 90 percent, 2 percent and 8 percent.
Step 3, mixing the fibers, the sand material with the grain size of 0.2-2mm and the stone material with the grain size of 3-15mm, and uniformly stirring to obtain aggregate; wherein, the proportion of the fiber, the sand material with the grain diameter of 0.2-2mm and the stone material with the grain diameter of 3-15mm in the aggregate is respectively 3 percent, 40 percent and 57 percent. Mixing cement, mineral powder, fly ash and silica fume, and uniformly stirring to obtain a filler; wherein the proportion of the cement, the mineral powder, the fly ash and the silica fume in the filler is respectively 30%, 30% and 10%. And mixing the aggregate and the filler, and uniformly stirring to obtain a mixture.
Step 4, uniformly mixing the modified epoxy resin, the curing agent and the mixture, and adding the mixture into a vacuum extruder for extrusion to obtain an extrudate; wherein, the proportion of the glue (containing the modified epoxy resin and the curing agent with the mass ratio of 1: 1.5), the aggregate and the filler in the high-strength mineral composite material is respectively 10 percent, 80 percent and 10 percent.
And 5, adding the extrudate into a mold, vibrating at high frequency for 35min, filling, standing for 12h, and demolding to obtain the high-strength mineral composite material, wherein the compressive strength is 186MPa, the tensile strength is 40MPa, and the elastic modulus is 48.
Example 2
A method for preparing a high strength mineral composite comprising the steps of:
step 1, branching and modifying bisphenol epoxy resin E51A, bisphenol epoxy resin NTEF170B, hyperbranched aromatic liquid epoxy resin HTME2C, national institute antifoaming agent DU607 and coupling agent KH650 in a reaction kettle to obtain modified epoxy resin; wherein, the proportion of E51A, NTEF170B, HTME2C, DU607 and KH650 in the modified epoxy resin is respectively 40%, 44%, 13.7%, 0.3% and 2%.
Step 2, mixing the main curing agent, the accelerator DMP30 and the reactive diluent XY746 octyl glycidyl ether, and uniformly stirring to obtain the curing agent; wherein the main curing agent is a composite curing agent modified alicyclic amine curing agent LT8045 and a modified aromatic amine curing agent JK 215; the proportion of the main curing agent, the accelerator and the reactive diluent in the curing agent is 85 percent, 2 percent and 13 percent respectively.
Step 3, mixing the fibers, the sand material with the grain size of 0.2-2mm and the stone material with the grain size of 3-15mm, and uniformly stirring to obtain aggregate; wherein, the proportion of the fiber, the sand material with the grain diameter of 0.2-2mm and the stone material with the grain diameter of 3-15mm in the aggregate is respectively 4 percent, 42 percent and 54 percent. Mixing cement, mineral powder, fly ash and silica fume, and uniformly stirring to obtain a filler; wherein the proportion of the cement, the mineral powder, the fly ash and the silica fume in the filler is respectively 20%, 25%, 35% and 20%. And mixing the aggregate and the filler, and uniformly stirring to obtain a mixture.
Step 4, uniformly mixing the modified epoxy resin, the curing agent and the mixture, and adding the mixture into a vacuum extruder for extrusion to obtain an extrudate; wherein, the proportion of the glue (containing the modified epoxy resin and the curing agent with the mass ratio of 1: 2), the aggregate and the filler in the high-strength mineral composite material is respectively 9 percent, 78 percent and 13 percent.
Step 5, adding the extrudate into a mold, vibrating at high frequency for 30min, filling, standing for 10h, and demolding to obtain the high-strength mineral composite material with compressive strength of 150Pa, tensile strength of 42Pa, and elastic modulus of 50Pa
Example 3
A method for preparing a high strength mineral composite comprising the steps of:
step 1, branching and modifying bisphenol epoxy resin E51A, bisphenol epoxy resin NTEF170B, hyperbranched aromatic liquid epoxy resin HTME2C, national institute antifoaming agent DU607 and coupling agent KH650 in a reaction kettle to obtain modified epoxy resin; wherein the proportion of E51A, NTEF170B, HTME2C, DU607 and KH650 in the modified epoxy resin is 45%, 42.4%, 11.5%, 0.1% and 1%, respectively.
Step 2, mixing the main curing agent, the accelerator DMP30 and the reactive diluent XY746 octyl glycidyl ether, and uniformly stirring to obtain the curing agent; wherein the main curing agent is a composite curing agent modified alicyclic amine curing agent LT8045 and a modified aromatic amine curing agent JK 215; the ratio of the main curing agent, the accelerator and the reactive diluent in the curing agent is respectively 87%, 3% and 10%.
Step 3, mixing the fibers, the sand material with the grain size of 0.2-2mm and the stone material with the grain size of 3-15mm, and uniformly stirring to obtain aggregate; wherein, the proportion of the fiber, the sand material with the grain diameter of 0.2-2mm and the stone material with the grain diameter of 3-15mm in the aggregate is respectively 5 percent, 30 percent and 65 percent. Mixing cement, mineral powder, fly ash and silica fume, and uniformly stirring to obtain a filler; wherein, the proportion of the cement, the mineral powder, the fly ash and the silica fume in the filler is respectively 25%, 35% and 15%. And mixing the aggregate and the filler, and uniformly stirring to obtain a mixture.
Step 4, uniformly mixing the modified epoxy resin, the curing agent and the mixture, and adding the mixture into a vacuum extruder for extrusion to obtain an extrudate; wherein, the proportion of the glue (containing the modified epoxy resin and the curing agent with the mass ratio of 2: 1), the aggregate and the filler in the high-strength mineral composite material is respectively 11 percent, 75 percent and 14 percent.
Step 5, adding the extrudate into a mold, vibrating at high frequency for 40min, filling, standing for 8h, and demolding to obtain the high-strength mineral composite material with compressive strength of 138Pa, tensile strength of 45MPa, and elastic modulus of 50Pa
Example 4
A method for preparing a high strength mineral composite comprising the steps of:
step 1, branching and modifying bisphenol epoxy resin E51A, bisphenol epoxy resin NTEF170B, hyperbranched aromatic liquid epoxy resin HTME2C, national institute antifoaming agent DU607 and coupling agent KH650 in a reaction kettle to obtain modified epoxy resin; wherein the proportion of E51A, NTEF170B, HTME2C, DU607 and KH650 in the modified epoxy resin is 45%, 44.8%, 8%, 0.2% and 2%, respectively.
Step 2, mixing the main curing agent, the accelerator DMP30 and the reactive diluent XY746 octyl glycidyl ether, and uniformly stirring to obtain the curing agent; wherein the main curing agent is a modified alicyclic amine curing agent LT 8045; the proportion of the main curing agent, the accelerator and the reactive diluent in the curing agent is respectively 86.5 percent, 1.5 percent and 12 percent.
Step 3, mixing the fibers, the sand material with the grain size of 0.2-2mm and the stone material with the grain size of 3-15mm, and uniformly stirring to obtain aggregate; wherein, the proportion of the fiber, the sand material with the grain diameter of 0.2-2mm and the stone material with the grain diameter of 3-15mm in the aggregate is respectively 4 percent, 40 percent and 56 percent. Mixing cement, mineral powder, fly ash and silica fume, and uniformly stirring to obtain a filler; wherein the proportion of the cement, the mineral powder, the fly ash and the silica fume in the filler is respectively 30%, 27%, 35% and 8%. And mixing the aggregate and the filler, and uniformly stirring to obtain a mixture.
Step 4, uniformly mixing the modified epoxy resin, the curing agent and the mixture, and adding the mixture into a vacuum extruder for extrusion to obtain an extrudate; wherein, the proportion of the glue (containing the modified epoxy resin and the curing agent in a mass ratio of 1: 1), the aggregate and the filler in the high-strength mineral composite material is respectively 15%, 70% and 15%.
Step 5, adding the extrudate into a mold, vibrating at high frequency for 35min, filling, standing for 10h, and demolding to obtain the high-strength mineral composite material with compressive strength of 155Pa, tensile strength of 40MPa, and elastic modulus of 45MPa
In the above embodiment, the novel hyperbranched aromatic liquid epoxy resin HTME2 is used to modify a bisphenol epoxy resin E51 and a bisphenol epoxy resin NTEF170 system, the viscosity of the obtained novel modified epoxy resin system is very low, the novel modified epoxy resin system is chemically modified, the molecular structure is completely changed, a composite curing agent with low viscosity is used for curing, the filler addition reaches 15%, the gel time reaches 4-5 hours, the stone, sand and filler have sufficient infiltration time, and the obtained mineral composite material has high strength, small pores, easy forming and good precision, and various indexes exceed national standards.
Although the present invention has been described in detail in this specification with reference to specific embodiments and illustrative embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A high-strength mineral composite material is characterized by comprising the following raw materials: glue, aggregate and filler; wherein the glue comprises a modified epoxy resin and a curing agent; the aggregate comprises fibers, sand materials with the grain diameter of 0.2-2mm and stone materials with the grain diameter of 3-15 mm; the filler comprises cement, mineral powder, fly ash and silica fume.
2. The high strength mineral composite of claim 1, wherein the modified epoxy resin comprises bisphenol epoxy resin E51, bisphenol epoxy resin NTEF170, hyperbranched aromatic liquid epoxy resin HTME2, defoamer DU607, coupling agent KH 650.
3. The high strength mineral composite of claim 2 wherein the modified epoxy resin comprises 40-45% bisphenol epoxy resin E51, 40-45% bisphenol epoxy resin NTEF170, 8-15% hyperbranched aromatic liquid epoxy resin HTME2, 0.1-0.3% defoamer DU607, 1-2% coupling agent KH 650.
4. The high strength mineral composite of claim 1 wherein the curing agent comprises a primary curing agent, an accelerator, and a reactive diluent in a ratio of 85-90%, 1.5-3%, and 5-15%, respectively.
5. The high strength mineral composite according to claim 4, wherein the main curing agent is a composite curing agent modified alicyclic amine curing agent LT8045 and/or a modified aromatic amine curing agent JK 215; the accelerant is DMP 30; the reactive diluent is XY746 octyl glycidyl ether.
6. The high strength mineral composite according to claim 1, wherein the aggregate comprises 3-5% of fibers, 30-45% of sand having a grain size of 0.2-2mm and 55-65% of stone having a grain size of 3-15 mm.
7. The high strength mineral composite of claim 1 wherein the filler comprises 20-30% cement, 20-30% mineral fines, 20-35% fly ash, and 8-20% silica fume.
8. The high strength mineral composite of claim 1 wherein the gum, the aggregate, and the filler comprise 9-15%, 70-84%, and 7-15% of the total mass of the high strength mineral composite, respectively.
9. A preparation method of a high-strength mineral composite material is characterized by comprising the following steps:
step 1, mixing bisphenol epoxy resin E51, bisphenol epoxy resin NTEF170, hyperbranched aromatic liquid epoxy resin HTME2, a defoaming agent DU607 and a coupling agent KH650, and uniformly stirring to obtain modified epoxy resin;
step 2, mixing the main curing agent, the accelerator and the reactive diluent, and uniformly stirring to obtain a curing agent;
step 3, mixing the fibers, the sand material with the grain size of 0.2-2mm and the stone material with the grain size of 3-15mm, and uniformly stirring to obtain aggregate; mixing cement, mineral powder, fly ash and silica fume, and uniformly stirring to obtain a filler; mixing the aggregate and the filler, and uniformly stirring to obtain a mixture;
step 4, uniformly mixing the modified epoxy resin, the curing agent and the mixture, and adding the mixture into a vacuum extruder for extrusion to obtain an extrudate;
and 5, adding the extrudate into a mold, vibrating and filling, standing and demolding to obtain the high-strength mineral composite material.
10. The method as claimed in claim 9, wherein the shaking time is 30-40min and the standing time is 8-12h in step 5.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113979670A (en) * | 2021-11-22 | 2022-01-28 | 罗振华 | High-strength wear-resistant composite material and preparation method and application thereof |
| CN115321879A (en) * | 2022-08-31 | 2022-11-11 | 思特博恩(常州)新材料科技有限公司 | High-strength mineral lathe bed composite material and preparation method thereof |
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