CN102807683A - Method for preparing flame-retardant moulded anti-dripping EPS (expandable polystyrene) foam material - Google Patents
Method for preparing flame-retardant moulded anti-dripping EPS (expandable polystyrene) foam material Download PDFInfo
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- CN102807683A CN102807683A CN2011101486028A CN201110148602A CN102807683A CN 102807683 A CN102807683 A CN 102807683A CN 2011101486028 A CN2011101486028 A CN 2011101486028A CN 201110148602 A CN201110148602 A CN 201110148602A CN 102807683 A CN102807683 A CN 102807683A
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Abstract
The invention relates to a solid flame retardant, in particular to a method for preparing a flame-retardant anti-dripping moulded EPS (expandable polystyrene) foam material by coating expandable graphite on surfaces of polystyrene pre-foamed granules. The technical scheme includes that solid flame retardant/adhesive mixed solution is uniformly coated on surfaces of polystyrene pre-foamed granules in the intermediate link of a traditional EPS foam material production process after polystyrene resin granules are pre-foamed, and then the next step of the traditional operation is performed, namely the polystyrene pre-foamed granules with the solid flame retardants adhered are added into an EPS steam molding machine for molding to obtain the flame-retardant anti-dripping EPS foam material, wherein the mass fraction of the solid flame retardants such as expandable graphite is 5-45%, and environment friendliness is realized while the flame-retardant and anti-dripping performances of EPS foam products are guaranteed. In addition, the method can be applied to any EPS foam material production factories and convenient to use.
Description
One, technical field
The present invention relates to a kind of solid flame retardant coated PS pre-frothing particle surface, and then prepare the method for flame-retardant anti-dropping molded polystyrene (EPS) foam materials; Be particularly related to expansible black lead is coated PS pre-frothing particle surface, and then prepare the method for flame-retardant anti-dropping eps foam material.
Two, background technology
Polystyrene foamed material is a kind of heat-insulating commonly used, lagging material.Because the requirement of fire safety aspect, it is fire-retardant that traditional flame retardant polystyrene foam material generally adopts hexabromocyclododecane (HBCD) to carry out, to reach fire retardant effect preferably.
The fire-retardant eps foam material of preparation HBCD, fire retardant HBCD can only add in the polymerization process of producing polystyrene resin.Although HBCD can make the eps foam material have certain flame retardant resistance, it is the Halogen flame-retardant system, produces a large amount of smog during burning, does not meet current environmental requirement.In addition, the eps foam material fire-retardant with HBCD has drippage when burning, can produce secondary disaster.
Along with the REACH of European Union rules are classified HBCD as and shown great attention to material (SVHC), and Northern European countries promotes it is included into the persistence organic pollutant (POPs) in the Convention of Stockholm, and the use of HBCD has been restricted and might be disabled.Therefore, seek new flame-retardant system and become the fire-retardant task of top priority of polystyrene foamed plastics.
Expansible black lead receives much concern as a kind of Halogen efficient flame-retarding agent in recent years.Expansible black lead is to carry out the chemical graft processing by natural flake graphite to form, and sharply expands when being heated, and forms the carbon-coating coverture at material surface, thereby reaches flame retardant effect.
Expansible black lead joined in the polystyrene foamed material by rights can reach flame retardant effect preferably.The method that in the past adopted is that expansible black lead is added when the screw extrusion press extrusion foaming, but this method only is applicable to extruded polystyrene (XPS) foam materials.
Three, summary of the invention
The object of the present invention is to provide a kind of with solid flame retardant particularly expansible black lead molded polystyrene (EPS) foam materials is carried out the novel method of fire-retardant finish.
The technical scheme that realizes the object of the invention is: in the middle-chain of eps foam material traditional mode of production process; After the pre-frothing of polystyrene resin pellet; Solid flame retardant/sizing agent mixed solution is evenly coated PS pre-frothing particle surface; Carry out next step of traditional operation then, the PS pre-frothing particle of bonding solid flame retardant is added to the moulding of EPS mould machine inner mold, obtain flame-retardant anti-dropping eps foam material.
Compared with prior art, the present invention has remarkable advantage: the 1) fire retardants such as expansible black lead selected for use of the present invention are eco-friendly fire retardants, meet current environmental requirement; 2) the fire-retardant eps foam material of HBCD, fire retardant HBCD must be at the upper reaches add during the polyreaction of plant produced polystyrene resin pellet; The present invention takes the method at solid flame retardants such as PS pre-frothing particle surface coating expansible black leads, then can use in any eps foam material produce producer, uses simple.
Four, concrete experiment method
Practical implementation method of the present invention is, the starting material polystyrene resin pellet of EPS is carried out pre-frothing, obtains PS pre-frothing particle.The solid flame retardant for preparing/sizing agent mixed solution evenly is sprayed on the PS pre-frothing particle in the stirrer, and behind the thorough mixing, the PS pre-frothing bead that is coated with solid flame retardant gets into the fluidizing drying bed drying of carrying out.At last drying pre-frothing particle adding completely mould is carried out molded operation, obtain flame-retardant anti-dropping eps foam material.
Embodiment 1 usefulness adhesive for polyurethane and expansible black lead prepare flame-retardant anti-dropping eps foam material
A: preparation coating mixed solution:
Weighing 0.5kg adhesive for polyurethane is added in the ethanolic soln of 3kg95%, after fully stirring, is made into graphite sizing agent mixed solution to wherein adding the 1kg expansible black lead, stirring once more.
B: the pre-frothing of polystyrene resin pellet and coating thereof are handled:
The polystyrene resin pellet is put into steam pre-frothing equipment carry out foaming treatment and adjust expansion ratio, obtain PS pre-frothing particle, evenly stir in the stirrer of packing into.
The graphite sizing agent mixed solution that obtains in the A step evenly is sprayed in the stirrer on the 5kg PS pre-frothing particle, and after fully stirring, mixture gets into the fluidizing drying bed drying of carrying out.
C: molded after the pre-frothing particle coats
The PS pre-frothing particle of the coating expansible black lead of step B preparation is put into the EPS mould machine, at 0.5～0.6kg/cm
3Vp under, heated 15～20 seconds, keep 100 seconds and the cooling, obtain flame-retardant anti-dropping eps foam material, its oxygen index is 27.
Embodiment 2 usefulness Precondensed UreaFormaldehyde Resin gluing agent and expansible black lead prepare flame-retardant anti-dropping eps foam material
A: preparation coating mixed solution:
The agent of weighing 0.75kg Precondensed UreaFormaldehyde Resin gluing is added in the water of 2.5kg, after fully stirring, is made into graphite sizing agent mixed solution to wherein adding the 1kg expansible black lead, stirring once more.
B: the pre-frothing of polystyrene resin pellet and coating thereof are handled:
The polystyrene resin pellet is put into EPS steam foaming machine carry out foaming treatment and adjust expansion ratio, obtain PS pre-frothing particle, evenly stir in the stirrer of packing into.
The graphite sizing agent mixed solution that obtains in the A step is evenly coated on the PS pre-frothing particle of 5kg in the stirrer, after fully stirring, mixture gets into the fluidizing drying bed drying of carrying out.
C: molded after the pre-frothing particle coats
The PS pre-frothing particle of the coating expansible black lead of step B preparation is put into the EPS mould machine, at 0.5～0.6kg/cm
3Vp under, heated 15～20 seconds, keep 100 seconds and the cooling, to produce flame-retardant anti-dropping eps foam material, its oxygen index is 26.
Embodiment 3 usefulness acrylate adhesives and expansible black lead prepare flame-retardant anti-dropping eps foam material
A: preparation coating mixed solution:
Weighing 0.75kg acrylate adhesive is added in the water of 2.5kg, after fully stirring, is made into graphite sizing agent mixed solution to wherein adding the 1kg expansible black lead, stirring once more.
B: the pre-frothing of polystyrene resin pellet and coating thereof are handled:
The polystyrene resin pellet is put into steam pre-frothing equipment carry out foaming treatment and adjust expansion ratio, obtain PS pre-frothing particle, evenly stir in the stirrer of packing into.
The graphite sizing agent mixed solution that obtains in the A step is evenly coated on the PS pre-frothing particle of 5kg in the stirrer, after fully stirring, mixture gets into the fluidizing drying bed drying of carrying out.
C: molded after the pre-frothing particle coats
The PS pre-frothing particle of the coating expansible black lead of step B preparation is put into the EPS mould machine, at 0.5～0.6kg/cm
3Vp under, heated 15～20 seconds, keep 100 seconds and the cooling, obtain flame-retardant anti-dropping eps foam material, its oxygen index is 26.
Embodiment 4 usefulness Polyurethane gluing agent and expansible black lead and wilkinite prepare flame-retardant anti-dropping eps foam material
A: preparation coating mixed solution:
Weighing 0.6kg adhesive for polyurethane is added in the ethanol of 4kg95%, after fully stirring, is made into graphite sizing agent mixed solution to wherein adding 0.75kg expansible black lead and 0.50kg wilkinite, stirring once more.
B: the pre-frothing of polystyrene resin pellet and coating thereof are handled:
The polystyrene resin pellet is put into steam pre-frothing equipment carry out foaming treatment and adjust expansion ratio, obtain PS pre-frothing particle, evenly stir in the stirrer of packing into.
The graphite sizing agent mixed solution that obtains in the A step evenly is sprayed on the PS pre-frothing particle of 5kg in the stirrer, after fully stirring, mixture gets into the fluidizing drying bed drying of carrying out.
C: molded after the pre-frothing particle coats
The coating expansible black lead and the bentonitic PS pre-frothing particle of step B preparation are put into the EPS mould machine, at 0.5～0.6kg/cm
3Vp under, heated 15～20 seconds, keep 100 seconds and the cooling, obtain flame-retardant anti-dropping eps foam material, its oxygen index is 29.
Embodiment 5 usefulness adhesive for polyurethane and expansible black lead and ammonium polyphosphate prepare flame-retardant anti-dropping eps foam material
A: preparation coating mixed solution:
Weighing 0.5kg adhesive for polyurethane is added in the ethanol of 3.5kg95%, and after fully stirring, to wherein 1kg expansible black lead and 0.25kg ammonium polyphosphate (APP), stirring once more is made into graphite sizing agent mixed solution.
B: the pre-frothing of polystyrene resin pellet and coating thereof are handled:
The polystyrene resin pellet is put into EPS steam pre-frothing equipment carry out foaming treatment and adjust expansion ratio, obtain PS pre-frothing particle, evenly stir in the stirrer of packing into.
Evenly coat with the graphite sizing agent mixed solution that obtains in the A step on the PS pre-frothing particle of 5kg in the stirrer, after fully stirring, mixture gets into the fluidizing drying bed drying of carrying out.
C: molded after the pre-frothing particle coats
The coating expansible black lead of step B preparation and the EPS pre-frothing particle of APP are put into the EPS mould machine, at 0.5～0.6kg/cm
3Vp under, heated 15～20 seconds, keep 100 seconds and the cooling, to produce flame-retardant anti-dropping eps foam material, its oxygen index is 28.
Claims (4)
1. the even applying solid fire retardant of intermediate materials PS pre-frothing particle surface in molded polystyrene (EPS) foam materials manufacturing processed carries out traditional moulding foaming operation with this then, obtains flame-retardant anti-dropping eps foam material.
2. according to claim 1, solid flame retardant can be chosen expansible black lead separately; Also can mix use with other one or more components (as: ammonium polyphosphate, PTFE, zinc borate, perlite, wilkinite, vermiculite etc.).
3. according to claim 1, the massfraction of the solid flame retardant of surface coated is 5%～45%.
4. according to claim 1, the sizing agent system of surface coated solid flame retardant is: adhesive for polyurethane, urea-formaldehyde resin adhesive, acrylate adhesive, the glutinous agent of melamine resin adehsive etc.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101486028A CN102807683A (en) | 2011-06-03 | 2011-06-03 | Method for preparing flame-retardant moulded anti-dripping EPS (expandable polystyrene) foam material |
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| CN2011101486028A CN102807683A (en) | 2011-06-03 | 2011-06-03 | Method for preparing flame-retardant moulded anti-dripping EPS (expandable polystyrene) foam material |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103709593A (en) * | 2013-12-10 | 2014-04-09 | 林百川 | Polystyrene/phosphatized phenolic resin syntactic foam, and preparation method thereof |
| CN103709594A (en) * | 2013-12-10 | 2014-04-09 | 林百川 | Syntactic foam and preparation method thereof |
| CN104072939A (en) * | 2014-06-20 | 2014-10-01 | 山东圣泉化工股份有限公司 | Modified polystyrene board and preparation method thereof |
| CN106188918A (en) * | 2016-07-14 | 2016-12-07 | 宜昌万新工贸进出口有限公司 | A kind of fire-retardant heat insulation plate and its preparation method and application |
| CN106587698A (en) * | 2015-10-19 | 2017-04-26 | 济南大学 | Modified molding polystyrene foam material preparation method |
| CN107501773A (en) * | 2017-08-30 | 2017-12-22 | 济南大学 | The preparation method and the application in polystyrene thermal insulation plate of a kind of Novel adhesive and fire retardant |
| EP3333216A1 (en) * | 2016-12-08 | 2018-06-13 | JOMA-Dämmstoffwerk GmbH | Flame retardant plastic foams |
| CN110172214A (en) * | 2019-06-03 | 2019-08-27 | 河北科技大学 | A kind of flame-retardant polystyrene thermal insulation material and preparation method thereof |
| CN111635597A (en) * | 2020-06-12 | 2020-09-08 | 中国科学院长春应用化学研究所 | A kind of polystyrene thermal insulation material and preparation method thereof |
| CN111763386A (en) * | 2020-07-25 | 2020-10-13 | 曹峰 | EPS flame-retardant heat-insulation wall board |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101121796A (en) * | 2006-06-23 | 2008-02-13 | 南京理工大学 | A polymer-based flame-retardant composite material |
| CN101835827A (en) * | 2007-05-30 | 2010-09-15 | 英尼奥斯诺瓦国际有限公司 | flame retardant polystyrene |
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2011
- 2011-06-03 CN CN2011101486028A patent/CN102807683A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101121796A (en) * | 2006-06-23 | 2008-02-13 | 南京理工大学 | A polymer-based flame-retardant composite material |
| CN101835827A (en) * | 2007-05-30 | 2010-09-15 | 英尼奥斯诺瓦国际有限公司 | flame retardant polystyrene |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103709593A (en) * | 2013-12-10 | 2014-04-09 | 林百川 | Polystyrene/phosphatized phenolic resin syntactic foam, and preparation method thereof |
| CN103709594A (en) * | 2013-12-10 | 2014-04-09 | 林百川 | Syntactic foam and preparation method thereof |
| CN104072939A (en) * | 2014-06-20 | 2014-10-01 | 山东圣泉化工股份有限公司 | Modified polystyrene board and preparation method thereof |
| CN106587698A (en) * | 2015-10-19 | 2017-04-26 | 济南大学 | Modified molding polystyrene foam material preparation method |
| CN106188918A (en) * | 2016-07-14 | 2016-12-07 | 宜昌万新工贸进出口有限公司 | A kind of fire-retardant heat insulation plate and its preparation method and application |
| CN106188918B (en) * | 2016-07-14 | 2017-09-19 | 宜昌万新工贸进出口有限公司 | A kind of fire-retardant heat insulation plate and its preparation method and application |
| EP3333216A1 (en) * | 2016-12-08 | 2018-06-13 | JOMA-Dämmstoffwerk GmbH | Flame retardant plastic foams |
| CN107501773A (en) * | 2017-08-30 | 2017-12-22 | 济南大学 | The preparation method and the application in polystyrene thermal insulation plate of a kind of Novel adhesive and fire retardant |
| CN110172214A (en) * | 2019-06-03 | 2019-08-27 | 河北科技大学 | A kind of flame-retardant polystyrene thermal insulation material and preparation method thereof |
| CN110172214B (en) * | 2019-06-03 | 2021-08-13 | 河北科技大学 | A kind of flame-retardant polystyrene thermal insulation material and preparation method thereof |
| CN111635597A (en) * | 2020-06-12 | 2020-09-08 | 中国科学院长春应用化学研究所 | A kind of polystyrene thermal insulation material and preparation method thereof |
| CN111763386A (en) * | 2020-07-25 | 2020-10-13 | 曹峰 | EPS flame-retardant heat-insulation wall board |
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Application publication date: 20121205 |