CN107383658A - Polystyrene flame-retardant thermal insulation material and preparation method thereof - Google Patents

Polystyrene flame-retardant thermal insulation material and preparation method thereof Download PDF

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Publication number
CN107383658A
CN107383658A CN201710657944.XA CN201710657944A CN107383658A CN 107383658 A CN107383658 A CN 107383658A CN 201710657944 A CN201710657944 A CN 201710657944A CN 107383658 A CN107383658 A CN 107383658A
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parts
polystyrene
insulation material
silica
thermal insulation
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汪琦
汪泽维
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Hefei Hong Ding Technology Co Ltd
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Hefei Hong Ding Technology Co Ltd
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    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
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    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
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    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
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    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/141—Hydrocarbons
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    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/143—Halogen containing compounds
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    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/149—Mixtures of blowing agents covered by more than one of the groups C08J9/141 - C08J9/143
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    • C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
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    • C08J2203/00—Foams characterized by the expanding agent
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    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
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Abstract

The present invention proposes a kind of polystyrene flame-retardant thermal insulation material and preparation method thereof, according to the number of parts by weight, including following components：200~300 parts of 80~100 parts of polystyrene, 6~12 parts of improved silica, 10~20 parts of magnesium sulfate, 10~20 parts of nanoclay, 5~10 parts of hydroxyethyl ether cellulose, 4~8 parts of fire retardant, 1~5 part of foaming agent, 0.5~1.5 part of stabilizer and water；The improved silica is mainly made up of silica, polyorganosiloxane resin and silane coupler.Preparation method：Polystyrene Silica hydrogel mixture is prepared first, then polystyrene Silica hydrogel mixture, fire retardant, water and foaming agent are added in foaming machine and foamed, remaining component is added thereto again and stirred, in mold bottom laying alkali-proof glass fiber mesh and pouring molding；One layer of grid cloth is finally repaved on slurry surface, natural curing forms.Not only fire resistance is good for the insulation material, and low with the stability high and thermal conductivity factor of size.

Description

Polystyrene flame-retardant thermal insulation material and preparation method thereof
Technical field
The invention belongs to building material technical field, and in particular to a kind of polystyrene flame-retardant thermal insulation material and its preparation side Method.
Background technology
At present, the external thermal insulation system applied to China mainly has following several forms：Expansion polystyrene plate (EPS) Thin-coat plaster wall outer heat preservation system, large die built-in (having net, without net) external thermal insulation system, glue powder polyphenyl granule exterior wall external thermal insulation system System, polyurethane (spraying, sheet material) external thermal insulation system, extruded sheet (XPS) external thermal insulation system etc..Wherein EPS sheet is with valency The advantages that lattice are cheap, construction is simple occupies the very big share in insulation market.
The thermal conductivity factor of EPS particles is low, and thermal and insulating performance is excellent, is preferable insulation material.PS foamed plastics category is easy Combustible material, its limited oxygen index are only 10%, and generation styrene monomer, styrene dimer and hydrocarbon are decomposed after meeting fire (such as benzene, low alkylbenzene and a small amount of oxygen-containing aromatic compound), has preferable calorific value.PS foamed plastics is also easy to produce band when burning The melting drippage of naked light, can ignite other combustibles, even if removing burning things which may cause a fire disaster remains to sustained combustion, therefore be applied stacking and building Fire easily occurs during work.
The relevant halogen-free flameproof eps foam research work disclosed now is to be loaded to fire retardant by binding agent mostly Eps foam particle surface forms flame retardant coating, that is, it is dispersed phase to form a flame retardant coating, and polystyrene is microcosmic more for matrix Phase system.As CN102391588A reports one kind using phenolic resin as binding agent, expanded graphite and red phosphorus are fire retardant to make The method of standby high flame retardant polystyrene foam, but the flame retardant coating addition needed for this method is larger, itself and polystyrene The ratio between base-material is up to 1.3-2.2:1, this is higher by the density for making gained foam, and production cost is also higher.
The content of the invention
The present invention proposes a kind of polystyrene flame-retardant thermal insulation material, and not only fire resistance is good for the insulation material, and has The stability high and thermal conductivity factor of size is low.
The technical proposal of the invention is realized in this way：
80~100 parts of polystyrene, 6~12 parts of improved silica, 10~20 parts of magnesium sulfate, nanoclay 10~20 Part, 5~10 parts of hydroxyethyl ether cellulose, 4~8 parts of fire retardant, 1~5 part of foaming agent, 0.5~1.5 part of stabilizer and water 200~ 300 parts；The improved silica is mainly made up of silica, polyorganosiloxane resin and silane coupler.
Further, the preparation method of the improved silica：
The scattered ultrasonic disperse that carries out in acetone of silica is obtained into suspension, adds silane coupler and poly- silica Alkane resin, it is then 50~60 DEG C of 2~3h of reaction in oil bath temperature, is then centrifuged for separation.
Further, the silane coupler is KH550, KH560 or KH570.
Nanoclay described further is that montmorillonite, kaolinite and sepiolite are one or more kinds of.
Fire retardant described further is the mixture of TDE and antimony oxide, and the foaming agent is pentamethylene With the mixture or calcium carbonate of carbon dioxide.
It is special using pentamethylene (thermal conductivity factor is 0.012W/ (mK)) low thermal conductivity in some embodiments of the present invention Property, the mean coefficient of heat conductivity of residual gas in polystyrene foam product stomata is reduced, reduces leading for Polystyrene heat insulation material Hot coefficient.
Further, the stabilizer is stearate.
It is a further object to provide a kind of preparation method of polystyrene flame-retardant thermal insulation material, including following step Suddenly：
1) required polystyrene and improved silica are weighed by formula rate first, then heats both in steam Mixed under conditions of 100~150 DEG C, obtain polystyrene Silica hydrogel mixture；
2) and then polystyrene Silica hydrogel mixture, fire retardant, water and foaming agent are added in foaming machine and foamed, stirred Uniformly and then addition magnesium sulfate, nanoclay, hydroxyethyl ether cellulose and stabilizer are mixed evenly, and obtain mixed slurry；
3) alkali-proof glass fiber mesh is laid in mold bottom, by mixed slurry pouring molding；Finally on slurry surface One layer of grid cloth is repaved, natural curing forms.
Beneficial effects of the present invention：
1st, binding agent silica is modified by polyorganosiloxane resin and coupling agent used in insulation material of the invention, Not only density is low for it, thermal conductivity factor is low, and aeroge has good adhesive property when in gel state in addition, can divide Under the collective effect for dissipating nanoclay and fire retardant therein, live charcoal can be met without burning, when it is located at as binding agent When between foam beads, it is possible to which the protection layer of charcoal for forming a foam-like envelopes flammable polystyrene foam particles, resistance Only propagation of flame, and then play good fire retardation.
2nd, insulation material apparent density of the invention is 32~38kg/m3；Vertical combustion grade can reach V-0, the limit For oxygen index (OI) up to 38~42%, thermal conductivity factor is 0.024~0.028W/mK.
Embodiment
The limited oxygen index of polystyrene flame-retardant thermal insulation material prepared by following embodiment is with reference to GB/T2406.2- 2009 standard testings；Apparent density is according to ISO845:2006 standard testings；Vertical combustion grade is marked with reference to UL-94 Quasi- test；Thermal conductivity factor is with reference to ASTM E1461 standard testings；Compressive strength is surveyed with reference to GB/T8813-2008 standards Examination.
Embodiment 1
The preparation method of improved silica：
The silica of 20 parts by weight is dispersed in progress ultrasonic disperse in the acetone of 100 parts by weight and obtains suspension, then The silane coupler of 2 parts by weight and the polyorganosiloxane resin of 4 parts by weight are added, is then 50 DEG C of reaction 3h in oil bath temperature, so Centrifuge afterwards.
Embodiment 2
The preparation method of improved silica：
The silica of 30 parts by weight is dispersed in progress ultrasonic disperse in the acetone of 100 parts by weight and obtains suspension, then The silane coupler of 3 parts by weight and the polyorganosiloxane resin of 5 parts by weight are added, is then 60 DEG C of reaction 2h in oil bath temperature, so Centrifuge afterwards.
Embodiment 3
A kind of polystyrene flame-retardant thermal insulation material, according to the number of parts by weight, including following components：
9 parts of the improved silica of 90 parts of polystyrene, embodiment 1,15 parts of magnesium sulfate, 16 parts of montmorillonite, hydroxyethyl ether 70 parts of 7 parts of cellulose, 6 parts of fire retardant, 4 parts of pentamethylene, 1 part of stearate and water；Fire retardant is TDE and three oxygen Change the mixture of two antimony, its mass ratio is 3:1.
Preparation method：
1) required polystyrene and improved silica are weighed by formula rate first, then heats both in steam Mixed under conditions of 130 DEG C, obtain polystyrene Silica hydrogel mixture；
2) and then polystyrene Silica hydrogel mixture, fire retardant, water and pentamethylene are added in foaming machine and foamed, stirred Uniformly and then addition magnesium sulfate, montmorillonite, hydroxyethyl ether cellulose and stearate are mixed evenly, and obtain mixed slurry；
3) alkali-proof glass fiber mesh is laid in mold bottom, by mixed slurry pouring molding；Finally on slurry surface One layer of grid cloth is repaved, natural curing forms.
Embodiment 4
A kind of polystyrene flame-retardant thermal insulation material, according to the number of parts by weight, including following components：
6 parts of the improved silica of 80 parts of polystyrene, embodiment 2,10 parts of magnesium sulfate, 20 parts of kaolinite, hydroxyethyl ether 60 parts of 10 parts of cellulose, 4 parts of fire retardant, 1 part of calcium carbonate, 0.5 part of stearate and water；Fire retardant is TDE and three The mixture of two antimony is aoxidized, its mass ratio is 4:1.
Preparation method：
1) improved silica of required polystyrene and embodiment 2 is weighed by formula rate first, then incite somebody to action both Mixed under conditions of steam heats 100 DEG C, obtain polystyrene Silica hydrogel mixture；
2) and then polystyrene Silica hydrogel mixture, fire retardant, water and calcium carbonate are added in foaming machine and foamed, stirred Uniformly and then addition magnesium sulfate, kaolinite, hydroxyethyl ether cellulose and stearate are mixed evenly, and obtain mixed slurry；
3) alkali-proof glass fiber mesh is laid in mold bottom, by mixed slurry pouring molding；Finally on slurry surface One layer of grid cloth is repaved, natural curing forms.
Embodiment 5
A kind of polystyrene flame-retardant thermal insulation material, according to the number of parts by weight, including following components：
12 parts of the improved silica of 100 parts of polystyrene, embodiment 2,20 parts of magnesium sulfate, 10 parts of sepiolite, ethoxy 5 parts of ether cellulose, 8 parts of fire retardant, 1 part of HFC-134a, 3 parts of pentamethylene, 2 parts of carbon dioxide, 1.5 parts of stearate and water 80 Part；The fire retardant is the mixture of TDE and antimony oxide, and its mass ratio is 2:1.
Preparation method：
1) improved silica of required polystyrene and embodiment 2 is weighed by formula rate first, then incite somebody to action both Mixed under conditions of steam heats 150 DEG C, obtain polystyrene Silica hydrogel mixture；
2) and then polystyrene Silica hydrogel mixture, fire retardant, water, pentamethylene and carbon dioxide are added in foaming machine and sent out Bubble, stir and then add magnesium sulfate, sepiolite, hydroxyethyl ether cellulose and stearate and be mixed evenly, mixed Close slurry；
3) alkali-proof glass fiber mesh is laid in mold bottom, by mixed slurry pouring molding；Finally on slurry surface One layer of grid cloth is repaved, natural curing forms.
The properties of the polystyrene flame-retardant thermal insulation material with above-mentioned formula are surveyed according to corresponding standard Examination, as a result referring to table 1.
The performance test results of the embodiment of the present invention 3~5 of table 1
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.

Claims (7)

  1. A kind of 1. polystyrene flame-retardant thermal insulation material, it is characterised in that according to the number of parts by weight, including following components：
    80~100 parts of polystyrene, 6~12 parts of improved silica, 10~20 parts of magnesium sulfate, 10~20 parts of nanoclay, hydroxyl 200~300 parts of 5~10 parts of ethylether cellulose, 4~8 parts of fire retardant, 1~5 part of foaming agent, 0.5~1.5 part of stabilizer and water； The improved silica is mainly made up of silica, polyorganosiloxane resin and silane coupler.
  2. 2. polystyrene flame-retardant thermal insulation material according to claim 1, it is characterised in that the system of the improved silica Preparation Method：
    The scattered ultrasonic disperse that carries out in acetone of silica is obtained into suspension, adds silane coupler and polysiloxanes tree Fat, it is then 50~60 DEG C of 2~3h of reaction in oil bath temperature, is then centrifuged for separation.
  3. 3. polystyrene flame-retardant thermal insulation material according to claim 2, it is characterised in that the silane coupler is KH550, KH560 or KH570.
  4. 4. polystyrene flame-retardant thermal insulation material according to claim 1, it is characterised in that the nanoclay is de- to cover Soil, kaolinite and sepiolite are one or more kinds of.
  5. 5. polystyrene flame-retardant thermal insulation material according to claim 1, it is characterised in that the fire retardant is decabrominated dipheny The mixture of ethane and antimony oxide, the foaming agent are the mixture or calcium carbonate of pentamethylene and carbon dioxide.
  6. 6. polystyrene flame-retardant thermal insulation material according to claim 1, it is characterised in that the stabilizer is stearic acid Salt.
  7. 7. the preparation method of polystyrene flame-retardant thermal insulation material as claimed in claim 1, it is characterised in that including following step Suddenly：
    1) required polystyrene and improved silica are weighed by formula rate first, both are then heated 100 in steam Mixed under conditions of~150 DEG C, obtain polystyrene Silica hydrogel mixture；
    2) and then polystyrene Silica hydrogel mixture, fire retardant, water and foaming agent are added in foaming machine and foamed, stirred Then magnesium sulfate, nanoclay, hydroxyethyl ether cellulose and stabilizer are added to be mixed evenly, obtains mixed slurry；
    3) alkali-proof glass fiber mesh is laid in mold bottom, by mixed slurry pouring molding；Finally repaved on slurry surface One layer of grid cloth, natural curing form.
CN201710657944.XA 2017-08-03 2017-08-03 Polystyrene flame-retardant thermal insulation material and preparation method thereof Pending CN107383658A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108439865A (en) * 2018-03-19 2018-08-24 济南大学 A kind of flame-retardant polystyrene cement base thermal insulation board and preparation method thereof
CN108841095A (en) * 2018-07-16 2018-11-20 江苏省苏安能节能建材科技有限公司 A kind of fire-retardant heat insulation plastic foamboard and its preparation and application
CN110330734A (en) * 2019-07-24 2019-10-15 安徽艾普塑料科技有限公司 A kind of eps foam clad plate and preparation process for washing machine
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CN113103610A (en) * 2021-04-02 2021-07-13 吉林吉大蓝创科技有限公司 Preparation method of nano mesoporous functional mineral composite heat insulation core material

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Application publication date: 20171124