CN111217574A - Preparation method of expanded vermiculite coated polystyrene foaming particle/cement composite foam material - Google Patents
Preparation method of expanded vermiculite coated polystyrene foaming particle/cement composite foam material Download PDFInfo
- Publication number
- CN111217574A CN111217574A CN201811410614.1A CN201811410614A CN111217574A CN 111217574 A CN111217574 A CN 111217574A CN 201811410614 A CN201811410614 A CN 201811410614A CN 111217574 A CN111217574 A CN 111217574A
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- expanded vermiculite
- curing
- eps
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000002245 particle Substances 0.000 title claims abstract description 55
- 239000010455 vermiculite Substances 0.000 title claims abstract description 37
- 235000019354 vermiculite Nutrition 0.000 title claims abstract description 37
- 229910052902 vermiculite Inorganic materials 0.000 title claims abstract description 37
- 239000004568 cement Substances 0.000 title claims abstract description 20
- 238000005187 foaming Methods 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 229920002223 polystyrene Polymers 0.000 title claims abstract description 16
- 239000004793 Polystyrene Substances 0.000 title claims abstract description 15
- 239000006261 foam material Substances 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003822 epoxy resin Substances 0.000 claims abstract description 18
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 18
- 239000000853 adhesive Substances 0.000 claims abstract description 13
- 230000001070 adhesive Effects 0.000 claims abstract description 13
- 239000011324 bead Substances 0.000 claims abstract description 8
- 239000006260 foam Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 239000006185 dispersion Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 6
- 239000003638 reducing agent Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 230000002035 prolonged Effects 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 239000004567 concrete Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000000126 substance Substances 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/12—Multiple coating or impregnating
Abstract
The invention discloses a preparation method of expanded vermiculite coated polystyrene foaming particles/cement composite foam material, which comprises the following steps: heating the EPS beads for 4-6min for foaming, and curing for 27-29 h; mixing epoxy resin and a curing agent to prepare epoxy resin adhesive, adding the epoxy resin adhesive into a container filled with expanded EPS particles, uniformly stirring, adding expanded vermiculite, continuously stirring until the expanded vermiculite is uniformly coated on the surfaces of the EPS particles, and curing for 1-2h to obtain the EPS particles coated with the expanded vermiculite; and (3) placing the rubber powder and the water reducing agent into a stirring pot filled with water for uniform dispersion, then adding sulphoaluminate cement, finally adding the EPS particles coated by the expanded vermiculite into the stirring pot, uniformly mixing, pouring into a mould, naturally curing, and then removing the mould to obtain the product. The composite foam material prepared by the method has higher strength, dry density and thermal conductivity coefficient, and in addition, the maximum heat release rate, the total heat release amount and the smoke release amount of the composite foam are reduced, and the ignition time is prolonged.
Description
Technical Field
The invention relates to a preparation method of expanded vermiculite coated polystyrene foaming particles/cement composite foam material.
Background
The polystyrene foam materials may be classified into molded type polystyrene (EPS) foam and extruded type polystyrene (XPS) foam according to the manner of molding. The EPS and XPS foams are widely applied to building thermal insulation materials due to the advantages of good thermal insulation effect, low water absorption, good weather resistance, convenient construction and the like. However, they are flammable materials and are prone to fire. Although inorganic heat-insulating materials (such as rock wool, expanded perlite and the like) have the advantages of low price, non-combustibility, good compatibility with common concrete materials in buildings and the like, the inorganic heat-insulating materials also have the defects of poor compressive strength, high water absorption, poor heat-insulating effect and the like.
The polystyrene foaming particles have the advantages of low density, good heat preservation effect and the like, and are often used as lightweight aggregate for preparing lightweight concrete or lightweight heat preservation mortar. However, EPS particles also have the defects of light weight, hydrophobicity, incompatibility with concrete materials and the like, and when the EPS particles are used as lightweight aggregates, the problems of 'floating up' of the EPS particles, easy delamination of mixed slurry and the like can occur. In order to solve the above problems, the surface of the EPS particles needs to be pretreated. The EPS particles are treated by using a coupling agent or a high molecular adhesive, so that the interface cohesive force can be improved to a certain extent, but the problems of poor dispersibility (the problem that the EPS particles are easy to float upwards) and poor fire resistance can not be well solved.
The Expanded Vermiculite (EV) has the advantages of light weight, porosity, hydrophilicity, non-inflammability, good compatibility with cement materials and the like, and can be compounded with cement-based materials to prepare light foamed thermal insulation materials.
Disclosure of Invention
The invention aims to provide a preparation method of expanded vermiculite coated polystyrene foaming particles/cement composite foam material.
The invention is realized by the following technical scheme:
a preparation method of expanded vermiculite coated polystyrene foaming particles/cement composite foam material comprises the following steps: heating the EPS beads in a water vapor environment for 4-6min for foaming, and curing the foamed EPS particles in the air for 27-29 h; mixing 20-30 parts of epoxy resin and 8-12 parts of curing agent to prepare epoxy resin adhesive, adding the epoxy resin adhesive into a container filled with 15-25 parts of expanded EPS particles, stirring to uniformly coat the resin on the surfaces of the particles, adding 35-45 parts of expanded vermiculite after uniformly stirring, continuously stirring until the expanded vermiculite is uniformly coated on the surfaces of the EPS particles, and curing at 65-75 ℃ for 1-2 hours to obtain expanded vermiculite coated EPS particles; placing 10-20 parts of rubber powder and 7-9 parts of water reducing agent into a stirring pot filled with 55-65 parts of water for uniform dispersion, then adding 20-30 parts of sulphoaluminate cement for stirring to form uniform slurry, finally adding the EPS particles coated by the expanded vermiculite into the stirring pot, fully stirring and uniformly mixing, then pouring into a mould, and naturally curing for 4-6 days and then removing the mould to obtain the product; the raw materials are in parts by weight.
Preferably, in the preparation method, the EPS beads are heated in a water vapor environment for 5min for foaming.
Preferably, in the preparation method, the expanded EPS particles are aged in the air for 28 hours.
Preferably, in the preparation method, the curing is carried out for 1.5h at 70 ℃.
Preferably, in the preparation method, the natural curing is carried out for 5 d.
The invention has the technical effects that:
the method is simple, convenient, fast and easy to operate, and the prepared expanded vermiculite coated polystyrene foaming particles/cement composite foam material has higher strength, dry density and heat conductivity coefficient, and in addition, the maximum heat release rate, total heat release and smoke release of the composite foam are reduced, the ignition time is prolonged, and the fireproof effect is good.
Detailed Description
The following describes the substance of the present invention with reference to the examples.
Example 1
A preparation method of expanded vermiculite coated polystyrene foaming particles/cement composite foam material comprises the following steps: heating the EPS beads in a water vapor environment for 5min for foaming, and curing the foamed EPS particles in the air for 28 h; mixing 25 parts of epoxy resin and 10 parts of curing agent to prepare epoxy resin adhesive, adding the epoxy resin adhesive into a container filled with 20 parts of expanded EPS particles, stirring to uniformly coat the resin on the surfaces of the particles, adding 40 parts of expanded vermiculite after uniformly stirring, continuously stirring until the expanded vermiculite is uniformly coated on the surfaces of the EPS particles, and curing at 70 ℃ for 1.5 hours to obtain EPS particles coated with the expanded vermiculite; placing 15 parts of rubber powder and 8 parts of water reducing agent into a stirring pot filled with 60 parts of water for uniform dispersion, adding 25 parts of sulphoaluminate cement, stirring to form uniform slurry, finally adding the EPS particles coated by the expanded vermiculite into the stirring pot, fully stirring, uniformly mixing, pouring into a mould, naturally curing for 5 days, and then removing the mould to obtain the modified EPS material; the raw materials are in parts by weight.
Example 2
A preparation method of expanded vermiculite coated polystyrene foaming particles/cement composite foam material comprises the following steps: heating the EPS beads in a water vapor environment for 4min for foaming, and curing the foamed EPS particles in the air for 27 h; mixing 20 parts of epoxy resin and 8 parts of curing agent to prepare epoxy resin adhesive, adding the epoxy resin adhesive into a container filled with 15 parts of expanded EPS particles, stirring to uniformly coat the resin on the surfaces of the particles, adding 35 parts of expanded vermiculite after uniformly stirring, continuously stirring until the expanded vermiculite is uniformly coated on the surfaces of the EPS particles, and curing at 65 ℃ for 1h to obtain the EPS particles coated with the expanded vermiculite; placing 10 parts of rubber powder and 7 parts of water reducing agent into a stirring pot filled with 55 parts of water for uniform dispersion, adding 20 parts of sulphoaluminate cement, stirring to form uniform slurry, finally adding the EPS particles coated by the expanded vermiculite into the stirring pot, fully stirring, uniformly mixing, pouring into a mold, naturally curing for 4 days, and removing the mold to obtain the modified EPS material; the raw materials are in parts by weight.
Example 3
A preparation method of expanded vermiculite coated polystyrene foaming particles/cement composite foam material comprises the following steps: heating the EPS beads in a water vapor environment for 6min for foaming, and curing the foamed EPS particles in the air for 29 h; mixing 30 parts of epoxy resin and 12 parts of curing agent to prepare epoxy resin adhesive, adding the epoxy resin adhesive into a container filled with 25 parts of expanded EPS particles, stirring to uniformly coat the resin on the surfaces of the particles, adding 45 parts of expanded vermiculite after uniformly stirring, continuously stirring until the expanded vermiculite is uniformly coated on the surfaces of the EPS particles, and curing for 2 hours at 75 ℃ to obtain the EPS particles coated with the expanded vermiculite; placing 20 parts of rubber powder and 9 parts of water reducing agent into a stirring pot filled with 65 parts of water for uniform dispersion, adding 30 parts of sulphoaluminate cement, stirring to form uniform slurry, finally adding the EPS particles coated by the expanded vermiculite into the stirring pot, fully stirring, uniformly mixing, pouring into a mould, naturally curing for 6 days, and then removing the mould to obtain the modified EPS material; the raw materials are in parts by weight.
The method is simple, convenient, fast and easy to operate, and the prepared expanded vermiculite coated polystyrene foaming particles/cement composite foam material has higher strength, dry density and heat conductivity coefficient, and in addition, the maximum heat release rate, total heat release and smoke release of the composite foam are reduced, the ignition time is prolonged, and the fireproof effect is good.
Claims (5)
1. A preparation method of expanded vermiculite coated polystyrene foaming particles/cement composite foam material is characterized by comprising the following steps: heating the EPS beads in a water vapor environment for 4-6min for foaming, and curing the foamed EPS particles in the air for 27-29 h; mixing 20-30 parts of epoxy resin and 8-12 parts of curing agent to prepare epoxy resin adhesive, adding the epoxy resin adhesive into a container filled with 15-25 parts of expanded EPS particles, stirring to uniformly coat the resin on the surfaces of the particles, adding 35-45 parts of expanded vermiculite after uniformly stirring, continuously stirring until the expanded vermiculite is uniformly coated on the surfaces of the EPS particles, and curing at 65-75 ℃ for 1-2 hours to obtain expanded vermiculite coated EPS particles; placing 10-20 parts of rubber powder and 7-9 parts of water reducing agent into a stirring pot filled with 55-65 parts of water for uniform dispersion, then adding 20-30 parts of sulphoaluminate cement for stirring to form uniform slurry, finally adding the EPS particles coated by the expanded vermiculite into the stirring pot, fully stirring and uniformly mixing, then pouring into a mould, and naturally curing for 4-6 days and then removing the mould to obtain the product; the raw materials are in parts by weight.
2. The method of claim 1, wherein: the EPS beads were heated in a steam atmosphere for 5min to foam.
3. The method of claim 1, wherein: and (3) curing the expanded EPS particles in the air for 28 h.
4. The method of claim 1, wherein: curing at 70 ℃ for 1.5 h.
5. The method of claim 1, wherein: and naturally curing for 5 d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410614.1A CN111217574A (en) | 2018-11-24 | 2018-11-24 | Preparation method of expanded vermiculite coated polystyrene foaming particle/cement composite foam material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410614.1A CN111217574A (en) | 2018-11-24 | 2018-11-24 | Preparation method of expanded vermiculite coated polystyrene foaming particle/cement composite foam material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111217574A true CN111217574A (en) | 2020-06-02 |
Family
ID=70809347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811410614.1A Pending CN111217574A (en) | 2018-11-24 | 2018-11-24 | Preparation method of expanded vermiculite coated polystyrene foaming particle/cement composite foam material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111217574A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113173722A (en) * | 2021-03-31 | 2021-07-27 | 恒尊集团有限公司 | Sintering-free lightweight aggregate, preparation method thereof and lightweight concrete |
-
2018
- 2018-11-24 CN CN201811410614.1A patent/CN111217574A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113173722A (en) * | 2021-03-31 | 2021-07-27 | 恒尊集团有限公司 | Sintering-free lightweight aggregate, preparation method thereof and lightweight concrete |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200602 |
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| WD01 | Invention patent application deemed withdrawn after publication |