CN102173718B - Composite board of kaolin and expanded vermiculite - Google Patents
Composite board of kaolin and expanded vermiculite Download PDFInfo
- Publication number
- CN102173718B CN102173718B CN 201110005673 CN201110005673A CN102173718B CN 102173718 B CN102173718 B CN 102173718B CN 201110005673 CN201110005673 CN 201110005673 CN 201110005673 A CN201110005673 A CN 201110005673A CN 102173718 B CN102173718 B CN 102173718B
- Authority
- CN
- China
- Prior art keywords
- kaolin
- expanded vermiculite
- vermiculite
- composite sheet
- composite board
- 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.)
- Expired - Fee Related
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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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing halogen
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/024—Steam hardening, e.g. in an autoclave
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Building Environments (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a composite board of kaolin and expanded vermiculite. The high-performance fire prevention and heat insulation composite board product is prepared by taking the kaolin and expanded vermiculite as main raw materials, taking sodium silicate as a bonder, and taking potassium fluosilicate as a curing accelerator through the steps of stirring and mixing, hot-forming, demoulding and the like. The kaolin is introduced, so that the intensity and fireproofing performance of the vermiculite product are improved by using the plasticity, dispersibility and thermostability of the kaolin; and the waterproofness and acid resistance of the vermiculite product are greatly improved by dispersing the kaolin in the layer structure of the expanded vermiculite and using insolubility and high acid solubility resistance of the kaolin. The composite board has the obvious characteristics of low price and environment-friendliness, and is non-inflammable and any harmful gas is not released at high temperature.
Description
Technical field
The invention belongs to fire-retardant material and field of heat insulating materials, the composite sheet and the method for manufacture thereof of particularly a kind of kaolin and expanded vermiculite.
Technical background
Vermiculite is a kind of stratum water aluminium silicate mineral that is rich in middle water, and dehydration is expanded when being heated, and volume can increase 8-15 rapidly doubly, reaches as high as 30 times, is referred to as expanded vermiculite after the expansion.Expanded vermiculite has fire prevention, light weight, sound-absorbing, antibiotic, advantage such as thermal conductivity is low, is a kind of good fire prevention, lagging material.
Patent of invention " vermiculite composite for injection moulding (CN1966452A) " is main raw material (80%) with the expanded vermiculite, adds the short silk 5% of spun glass, synthetical glue (thermosetting resin) 14%, and solidifying agent 1%, extruding forms or the roll extrusion moulding of heating continuously in mould.Product appearance, proportion, complete processing, firm degree are all similar with timber, be placed in the fire nonflammable, in discharging water 48 hours impermeable, indeformable.This invention is a sticker with the organic resin, when temperature is high, can discharge a large amount of toxic gases.
Patent of invention " composite sheet of a kind of nano silicon and expanded vermiculite and method of manufacture thereof (CN101554791A) " is utilized the high reaction activity of nano silicon in the water glass system; Improve the intensity and the toughness of vermiculite goods, improve the defectives such as water-repellancy difference of vermiculite goods.The nano silicon that this invention is used costs an arm and a leg, and lacks a very important parameters-water-intake rate in the performance of products index.
Other patents of invention, as adopting boosting-pressurize-stress-relief process repeatedly in " thermal insulating and fire-proof vermiculite decorative board (CN1149011A) " disclosed technology, production process is too numerous and diverse." a kind of water tolerance vermiculite heat preservation plate material and preparation method thereof (201010523139.6) " uses organosilicon acrylic resin as water-repellent modified dose, therefore do not have good fire-proof function.
Summary of the invention
The object of the invention is; The composite sheet of a kind of kaolin and expanded vermiculite is provided; It is main raw material that this composite sheet adopts kaolin, expanded vermiculite, is sticker with water glass, and potassium silicofluoride is a curing catalyst; Through mix, operation such as hot-forming, the demoulding, prepare high performance fire-proof and thermal-insulation composite sheet goods.The present invention introduces kaolin; Utilize its plasticity-, dispersiveness and high thermal resistance; The intensity and the fire line of vermiculite goods have not only been improved; Also be scattered in the laminate structure of expanded vermiculite, utilize its water insoluble and good antiacid dissolubility, improved the water resistance and the acid resistance of vermiculite goods greatly through kaolin.Its outstanding feature of composite sheet involved in the present invention is: cheapness, environmental protection, do not fire no the down any obnoxious flavour release of high temperature.
The composite sheet of a kind of kaolin of the present invention and expanded vermiculite follows these steps to carry out:
A, be that water glass 40-61%, expanded vermiculite 30-42%, kaolin 8-16.5% and curing catalyst are that potassium silicofluoride 1.0-1.5% is even in airtight stirrer for mixing with sticker by weight percentage;
B, the mixture of step a is poured in the mould, wipeed off, hot-forming by the rate of compression 57-74% that sets, hot pressing temperature is 180 ℃, and pressure is 0.5MPa, pressurize 180 minutes, and the demoulding is handled the composite sheet that promptly gets kaolin and expanded vermiculite through deburring again.
The loose bulk density of used expanded vermiculite is 90-130kg/m among the step a
3
Used water glass is sodium type or potassium type water glass among the step a, and solid content is 30-40%, and modulus is 3.0-4.0.
During the demoulding, respectively overlay one deck polytetrafluoroethylene film among the step b at mould bottom and top layer.
The composite sheet of a kind of kaolin of the present invention and expanded vermiculite, water glass is widely used in every field because of its cheap price and outstanding high temperature resistance as mineral binder bond in the employed raw material of this sheet material.Curing catalyst (potassium silicofluoride) is slightly acidic; After water glass mixes, can promote water glass to solidify, quicken to generate silicic acid gel with high-crosslinking-degree silicon-oxy tetrahedron network structure; In the hot pressing along with the prolongation of heat-insulation pressure keeping time; The silicic acid gel degree of crosslinking constantly increases, and moisture is constantly discharged, and finally forms the silicon-oxy tetrahedron network of intensity height, good toughness.Combine kaolinic plasticity-, high thermal resistance, dispersiveness, water insoluble and antiacid dissolubility again, thereby prepare the novel expanded vermiculite sheet material of a kind of cheapness, environmental protection, excellent performance.Rate of compression of the present invention is the percentage ratio that is compressed volume, and described polytetrafluoroethylene film can repeatedly recycle.
The composite sheet of a kind of kaolin of the present invention and expanded vermiculite is through detecting, and its each item performance is:
Ultimate compression strength: 4.0-8.0MPa;
Tensile strength: 1.4-2.9MPa;
Unit weight: 460-820Kg/m
3
Thermal conductivity (35 ℃): 0.09-0.12w/mk;
Water-intake rate (GB5486-2008): 5-35%;
Fire line: the A level, do not fire;
The VOC burst size: the full-inorganic goods, do not have any VOC and discharge;
Workability: can follow closely, can saw, can dig.
Embodiment
Embodiment 1:
By weight percentage with sticker be sodium type water glass 40% (solid content is 30%, and modulus is 3.0), (loose bulk density is 130kg/m to expanded vermiculite 42%
3), kaolin 16.5% and curing catalyst be that potassium silicofluoride 1.5% is even in airtight stirrer for mixing;
Again mixture is poured in the mould, wipeed off, hot-forming then; Rate of compression is 67%, and hot pressing temperature is 180 ℃, and pressure is 0.5MPa; Pressurize 180 minutes, the demoulding is for conveniently stripped; Mould bottom and top layer respectively overlay one deck polytetrafluoroethylene film, handle the composite sheet that promptly gets kaolin and expanded vermiculite through deburring again.
The kaolin that makes through this method and the composite sheet of expanded vermiculite are through test, and its performance is:
Ultimate compression strength: 4.0MPa;
Tensile strength: 1.4MPa;
Unit weight: 600Kg/m
3
Thermal conductivity (35 ℃): 0.10w/mk;
Water-intake rate (GB5486-2008): 8%;
Fire line: the A level, do not fire;
The VOC burst size: the full-inorganic goods, do not have any VOC and discharge;
Workability: can follow closely, can saw, can dig.
Embodiment 2:
By weight percentage with sticker be potassium type water glass 61% (solid content is 35%, and modulus is 3.3), (loose bulk density is 90kg/m to expanded vermiculite 30%
3), kaolin 8% and curing catalyst be that potassium silicofluoride 1.0% is even in airtight stirrer for mixing;
Mixture is poured in the mould of making by ordinary method, wipeed off, hot-forming then; Rate of compression is 57%, and hot pressing temperature is 180 ℃, and pressure is 0.5MPa; Pressurize 180 minutes, the demoulding is for conveniently stripped; Mould bottom, end face respectively overlay one deck polytetrafluoroethylene film, handle the composite sheet that promptly gets kaolin and expanded vermiculite through deburring again.
The kaolin that makes through this method and the composite sheet of expanded vermiculite are through test, and its performance is:
Ultimate compression strength: 4.6MPa;
Tensile strength: 1.5MPa;
Unit weight: 460Kg/m
3
Thermal conductivity (35 ℃): 0.12w/mk;
Water-intake rate (GB5486-2008): 35%;
Fire line: the A level, do not fire;
The VOC burst size: the full-inorganic goods, do not have any VOC and discharge;
Workability: can follow closely, can saw, can dig.
Embodiment 3:
By weight percentage with sticker be sodium type water glass 47% (solid content is 40%, and modulus is 3.6), (loose bulk density is 110kg/m to expanded vermiculite 36%
3), kaolin 15.8% and curing catalyst be that potassium silicofluoride 1.2% is even in airtight stirrer for mixing;
Mixture is poured in the mould of making by ordinary method, wipeed off, hot-forming then; Rate of compression is 72%, and hot pressing temperature is 180 ℃, and pressure is 0.5MPa; Pressurize 180 minutes, the demoulding is for conveniently stripped; Mould bottom, end face respectively overlay one deck polytetrafluoroethylene film, handle the composite sheet that promptly gets kaolin and expanded vermiculite through deburring again.
The kaolin that makes through this method and the composite sheet of expanded vermiculite are through test, and its performance is:
Ultimate compression strength: 8.0MPa;
Tensile strength: 2.9MPa;
Unit weight: 760Kg/m
3
Thermal conductivity (35 ℃): 0.11w/mk;
Water-intake rate (GB5486-2008): 7%;
Fire line: the A level, do not fire;
The VOC burst size: the full-inorganic goods, do not have any VOC and discharge;
Workability: can follow closely, can saw, can dig.
Embodiment 4:
By weight percentage with sticker be sodium type water glass 58% (solid content is 30%, and modulus is 3.0), (loose bulk density is 110kg/m to expanded vermiculite 33%
3), kaolin 8% and curing catalyst be that potassium silicofluoride 1.0% is even in airtight stirrer for mixing;
Mixture is poured in the mould of making by ordinary method, wipeed off, hot-forming then; Rate of compression is 61%, and hot pressing temperature is 180 ℃, and pressure is 0.5MPa; Pressurize 180 minutes, the demoulding is for conveniently stripped; Mould bottom, end face respectively overlay one deck polytetrafluoroethylene film, handle the composite sheet that promptly gets kaolin and expanded vermiculite through deburring again.
The kaolin that makes through this method and the composite sheet of expanded vermiculite are through test, and its performance is:
Ultimate compression strength: 5.3MPa;
Tensile strength: 1.9MPa;
Unit weight: 500Kg/m
3
Thermal conductivity (35 ℃): 0.09w/mk;
Water-intake rate (GB5486-2008): 15%;
Fire line: the A level, do not fire;
The VOC burst size: the full-inorganic goods, do not have any VOC and discharge;
Workability: can follow closely, can saw, can dig.
Embodiment 5:
By weight percentage with sticker be potassium type water glass 49% (solid content is 36%, and modulus is 4.0), (loose bulk density is 120kg/m to expanded vermiculite 35%
3), kaolin 14.5% and curing catalyst be that potassium silicofluoride 1.5% is even in airtight stirrer for mixing;
Mixture is poured in the mould of making by ordinary method, wipeed off, hot-forming then; Rate of compression is 74%, and hot pressing temperature is 180 ℃, and pressure is 0.5MPa; Pressurize 180 minutes, the demoulding is for conveniently stripped; Mould bottom, end face respectively overlay one deck polytetrafluoroethylene film, handle the composite sheet that promptly gets kaolin and expanded vermiculite through deburring again.
The kaolin that makes through this method and the composite sheet of expanded vermiculite are through test, and its performance is:
Ultimate compression strength: 6.4MPa;
Tensile strength: 2.1MPa;
Unit weight: 820Kg/m
3
Thermal conductivity (35 ℃): 0.11w/mk;
Water-intake rate (GB5486-2008): 5%;
Fire line: the A level, do not fire;
The VOC burst size: the full-inorganic goods, do not have any VOC and discharge;
Workability: can follow closely, can saw, can dig.
Claims (1)
1. the composite sheet of kaolin and expanded vermiculite is characterized in that following these steps to carrying out:
A, be that water glass 40-61%, expanded vermiculite 30-42%, kaolin 8-16.5% and curing catalyst are that potassium silicofluoride 1.0-1.5% is even in airtight stirrer for mixing with sticker by weight percentage, wherein the loose bulk density of used expanded vermiculite is 90-130kg/m
3, used water glass is sodium type or potassium type water glass, and solid content is 30-40%, and modulus is 3.0-4.0;
B, the mixture of step a is poured in the mould, wipeed off, hot-forming by the rate of compression 57-74% that sets; Hot pressing temperature is 180 ℃, and pressure is 0.5MPa, pressurize 180 minutes; The demoulding; Handle the composite sheet promptly get kaolin and expanded vermiculite through deburring again, wherein during the demoulding, respectively overlay one deck polytetrafluoroethylene film at mould bottom and top layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110005673 CN102173718B (en) | 2011-01-12 | 2011-01-12 | Composite board of kaolin and expanded vermiculite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110005673 CN102173718B (en) | 2011-01-12 | 2011-01-12 | Composite board of kaolin and expanded vermiculite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102173718A CN102173718A (en) | 2011-09-07 |
| CN102173718B true CN102173718B (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110005673 Expired - Fee Related CN102173718B (en) | 2011-01-12 | 2011-01-12 | Composite board of kaolin and expanded vermiculite |
Country Status (1)
| Country | Link |
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| CN (1) | CN102173718B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449793A (en) * | 2013-05-23 | 2013-12-18 | 荣氏新材料（湖北）股份有限公司 | Vermiculite steel composite plate for ammunition box |
| CN113024997A (en) * | 2021-04-23 | 2021-06-25 | 厦门纽优新型工艺有限公司 | Heat insulation material capable of being hot-pressed and formed and preparation process thereof |
| CN113277828A (en) * | 2021-06-04 | 2021-08-20 | 陆宇皇金建材（河源）有限公司 | Mineral board and preparation method thereof |
| CN114853442B (en) * | 2022-05-17 | 2023-06-06 | 石家庄易辰防火保温材料有限公司 | Steel structure fireproof protection board prepared from vermiculite grades with different types and particle sizes |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101045832A (en) * | 2007-03-22 | 2007-10-03 | 袁景华 | Polymer coating composite and preparation method thereof |
| CN101051691A (en) * | 2007-05-14 | 2007-10-10 | 武汉理工大学 | Geo polymer base composite material double pole plate and its preparing method |
| CN101344006A (en) * | 2008-08-20 | 2009-01-14 | 厦门大学 | Tunnel fire-proof slab and preparation method thereof |
| CN101554791A (en) * | 2009-05-19 | 2009-10-14 | 佛山市冠富蛭石制品有限公司 | Composite board of nano silicon dioxide and expanded vermiculite and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2812012B1 (en) * | 2000-07-18 | 2003-06-13 | Lafarge Platres | PLASTERBOARD WITH IMPROVED FIRE RESISTANCE AND ITS REPAIR |
-
2011
- 2011-01-12 CN CN 201110005673 patent/CN102173718B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101045832A (en) * | 2007-03-22 | 2007-10-03 | 袁景华 | Polymer coating composite and preparation method thereof |
| WO2008113609A3 (en) * | 2007-03-22 | 2009-03-12 | Xuhong Turella Yuan | Geopolymer composition, coating obtainable therefrom and methods |
| CN101051691A (en) * | 2007-05-14 | 2007-10-10 | 武汉理工大学 | Geo polymer base composite material double pole plate and its preparing method |
| CN101344006A (en) * | 2008-08-20 | 2009-01-14 | 厦门大学 | Tunnel fire-proof slab and preparation method thereof |
| CN101554791A (en) * | 2009-05-19 | 2009-10-14 | 佛山市冠富蛭石制品有限公司 | Composite board of nano silicon dioxide and expanded vermiculite and manufacturing method thereof |
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|---|---|
| CN102173718A (en) | 2011-09-07 |
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