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WO2007114529A1 - Procédé de fabrication de particules de polystyrène expansibles présentant une excellente capacité d'isolation thermique - Google Patents

Procédé de fabrication de particules de polystyrène expansibles présentant une excellente capacité d'isolation thermique Download PDF

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Publication number
WO2007114529A1
WO2007114529A1 PCT/KR2006/001194 KR2006001194W WO2007114529A1 WO 2007114529 A1 WO2007114529 A1 WO 2007114529A1 KR 2006001194 W KR2006001194 W KR 2006001194W WO 2007114529 A1 WO2007114529 A1 WO 2007114529A1
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WO
WIPO (PCT)
Prior art keywords
polystyrene particles
graphite
particles
polystyrene
alpha
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.)
Ceased
Application number
PCT/KR2006/001194
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English (en)
Inventor
Jin Hee Lee
Seok Won Lee
Han Bae Bang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kumho Petrochemical Co Ltd
Original Assignee
Korea Kumho Petrochemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Korea Kumho Petrochemical Co Ltd filed Critical Korea Kumho Petrochemical Co Ltd
Priority to PCT/KR2006/001194 priority Critical patent/WO2007114529A1/fr
Priority to KR1020070074967A priority patent/KR100801275B1/ko
Publication of WO2007114529A1 publication Critical patent/WO2007114529A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0066—Use of inorganic compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/16—Making expandable particles
    • C08J9/18—Making expandable particles by impregnating polymer particles with the blowing agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2325/00—Characterised by the use 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; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene
    • C08J2325/06—Polystyrene

Definitions

  • the present invention relates to a method for preparing expandable polystyrene particles containing graphite, and more particularly to a method for preparing expandable polystyrene particles, comprising adding graphite, an expanding agent and a C6-C10 aromatic hydrocarbon to aqueous suspended polystyrene particles and heating the mixture.
  • Polystyrene foam is generally prepared by pre-expanding expandable polystyrene particles to obtain pre-expanded beads, loading the pre-expanded beads into a closed mold having a number of small holes, heating and expanding the loaded beads with, for example, pressurized steam, to fill the gaps between the pre-expanded beads and, at the same time, bond the expanded beads to each other, cooling the expanded material and releasing the cooled material from the mold.
  • Such polystyrene foam is mainly used as thermal insulation material, for example, building wall material inserted between panels, and thus requires low thermal conductivity, low absorption rate, high strength and the like.
  • the improvement in the performance of thermal insulation material has the advantage of either reducing the production cost by reducing the use of expandable polystyrene particles required to obtain the same insulation performance, or making the slimming of an exterior wall possible by reducing the thickness of the insulation materials, thus enabling a dwelling space to be enlarged. Accordingly, the demand for the improvement in the performance of thermal insulation material has been continued.
  • the gas-phase conduction (b) is advantageous to reduce thermal conductivity, when Freon gas having high molecular weight is used in a foam; however, the gas is gradually dispersed from the foam and substituted with air, and thus the effect thereof on thermal conductivity is lowered with the passage of time.
  • the in-cell gas convection (d) is found in cells having a diameter of more than 4 mm, and is negligible in conventional resin foam. Thus, the highest effect on thermal conductivity is due to the between-cell-membrane radiation (c).
  • European Patent Publication No. 620246 discloses moldings produced from expanded polystyrene foam containing particulate athermanous materials, particularly carbon black and graphite.
  • the incorporation of the particulate athermanous material into the moldings is preferably performed by applying the material on the surface of the pre- expanded polystyrene particles or by embedding the material into the polystyrene particles which have not yet been expanded.
  • Korean Patent Publication No. 2001-0012557 discloses an expandable styrene polymer which contains graphite introduced into the expandable polystyrene particles by polymerizing a styrene monomer in the presence of graphite particles, and thus has improved thermal conductivity and good processability and physical properties.
  • this product obtained by adding graphite during polymerization, the cells can become large and non-uniform, thus causing a reduction in important physical properties such as absorption rate and strength.
  • a thermal insulation material which has no reduction in properties such as absorption rate and strength and, at the same time, contains an inorganic athermanous material, and thus has low thermal conductivity.
  • the present invention provides a method for preparing expandable polystyrene particles containing graphite particles, the method comprising adding graphite, an expanding agent and a C6-C10 aromatic hydrocarbon to aqueous suspended polystyrene particles and heating the mixture.
  • the present invention provides a novel method for preparing polystyrene particles containing graphite, and also provides expandable polystyrene particles containing graphite in a portion of the particle.
  • the expansion of such polystyrene particles can provide polystyrene foam that has excellent thermal insulation properties due to a significant reduction in thermal conductivity while maintaining the cell diameter of the existing polystyrene foam in order to maintain physical properties such as water absorption rate and strength.
  • the polymerized polystyrene particles are polymers and/or copolymers of styrenic monomers, including styrenes, alkylstyrenes (e.g., ethylstyrene, dimethylstyrene and para-methylstyrene), alpha-alkylstyrenes (e.g., alpha-methylstyrene, alpha-ethylstyrene, alpha-propylstyrene and alpha-butylstyrene), halogenated styrenes (e.g., chlorostyrene and bromostyrene), and vinyl toluene.
  • styrenic monomers including styrenes, alkylstyrenes (e.g., ethylstyrene, dimethylstyrene and para-methylstyrene), alpha-alkylstyrenes (e
  • the polystyrene particles may also be copolymers of said styrenic monomers with copoly- merizable monomers, for example, acrylonitrile, butadiene, alkylacrylate such as methylacrylate, alkylmethacrylate such as methylmethacrylate, isobutylene, vinyl chloride, and mixtures thereof.
  • aqueous suspended polystyrene particles refers to particles which have a conversion of monomer to polymer of at least 80%, and thus a specific gravity of more than 1, or show the gelling of the particles.
  • these particles preferably have a conversion of monomer to polymer of at least 90%, more preferably at least 95%, and most preferably 100%.
  • the polymerized polystyrene particles are suspended in aqueous solution to obtain aqueous suspended polystyrene particles.
  • the suspended polystyrene particles can be obtained using an emulsion polymerization, bulk polymerization, dispersion polymerization or suspension polymerization process, which is known in the art.
  • the polystyrene particles polymerized by suspension polymerization are used in order to easily provide polystyrene particles of a size suitable for use in thermal insulation materials.
  • the aqueous suspended polystyrene particles are obtained by resuspension of primary polystyrene obtained by suspension polymerization. This is performed by adding a suspending agent to pure water, and then adding a styrene monomer and a flame retardant thereto, followed by adding an initiator.
  • the kind of suspending agent greatly influences the particle size distribution of prepared particles; the present invention utilized, as the suspending agent, tricalcium phosphate, which is generally known to be effective for a narrow particle size distribution and uniform particle growth in the suspension polymerization of styrene.
  • the flame retardant hexabromocyclododecane, which is generally frequently used in the art, was used.
  • a peroxide initiator can be used as the initiator.
  • the polymerization is performed by maintaining the styrene monomer at a temperature of 80-90 0 C for 6-7 hours in the presence of a benzoyl peroxide initiator, and then conducting a reaction at a temperature of 120-130 0 C for 30 minutes to 2 hours using tertiary butyl peroxide, an initiator which is decomposed at high temperature, in order to allow the remaining monomer to sufficiently react.
  • the resulting polystyrene suspension can be used after discharge, dewatering, drying and then resuspension, and it may also be used directly without any treatment.
  • the discharged, dewatered and dried polystyrene particles can be dispersed in water containing a suspending agent.
  • a suspending agent a conventional suspending agent, which is used in the suspension polymerization of polystyrene, may be used, and tricalcium phosphate is preferably used as the suspending agent.
  • the aqueous suspended polystyrene particles are obtained by the suspension polymerization of the styrene monomer.
  • polystyrene particles means polystyrene particles having a conversion to polymer of at least 80%, which have a polystyrene density of more than 1 or show gelling of the particles.
  • Graphite, an expanding agent, and a C6-C10 aromatic hydrocarbon may be added, after styrene preferably reaches a conversion to suspension polymer of at least 80%, more preferably 99%, and most preferably 100%. If these additives are added in a state in which the polymerization of the styrene monomer is not made, graphite will completely penetrate into the particles, thus reducing the physical properties of the expanded particles.
  • the graphite used to reduce thermal conductivity in the present invention natural graphite or synthetic graphite can be used. It preferably has a particle size of 1-50 microns, and preferably 2-10 microns, and a bulk density of 100-500 g/1 and a specific surface area of 5-20 m /g.
  • the graphite particles are preferably used in an amount of 0.05-20 parts by weight, and more preferably 0.5-10 wt%, based on the weight of the styrene polymer.
  • the expanding agent which is used to expand the polystyrene particles in the present invention, may be a conventional expanding agent which is used in expandable styrene polymers.
  • the expanding agent is preferably added in an amount of 3-10 wt% based on the weight of the styrene polymer.
  • Suitable expanding agents which can be used in the present invention, include aliphatic hydrocarbons, including alicyclic compounds having 4-6 carbon atoms.
  • the expanding agent is preferably pentane, and more preferably a mixture of cyclopentane and pentane.
  • the C6-C10 aromatic hydrocarbons can serve to soften the surface of the polystyrene particles, making the penetration of graphite into the surface of the polystyrene particles smooth.
  • the C6-C10 aromatic hydrocarbon may be a polymerizable hydrocarbon having an ethylenically unsaturated functional group, for example, a styrenic monomer selected from the group consisting of styrene, alkylstyrenes (e.g., ethylstyrene, dimethylstyrene and para-methylstyrene), and alpha-alkylstyrenes (e.g., alpha-methylstyrene, alpha- propylstyrene and alpha-butylstyrene).
  • alkylstyrenes e.g., ethylstyrene, dimethylstyrene and para-methylstyrene
  • the C6-C10 aromatic hydrocarbon may be a non-polymerizable hydrocarbon having no ethylenically unsaturated functional group.
  • the C6-C10 aromatic hydrocarbons include benzene, toluene, p-xylene, m-xylene, ethylbenzene, propylbenzene, and isopropylbenzene, and may preferably be toluene and ethyl benzene.
  • the C6-C10 aromatic hydrocarbon may be a mixture of the polymerizable hydrocarbon and the non- polymerizable hydrocarbon.
  • the C6-C10 aromatic hydrocarbon is preferably used in an amount of 0.1-70 wt% based on the weight of the polystyrene particles. If the amount of the aromatic hydrocarbon is reduced, the efficiency of penetration of graphite can be lowered, and the amount of the hydrocarbon is excessively large, a reduction in the thermal resistance of the final moldings can occur, and the deformation of the polymerized particles or the reduction in the dispersion stability thereof can also occur.
  • the non-polymerizable hydrocarbon is preferably used in an amount of 0.1-10 wt%, because, if it is used alone or in a mixture with the polymerizable hydrocarbon, it can result in a reduction in thermal resistance.
  • the graphite, the expanding agent, the C6-C10 aromatic hydrocarbon, and the aqueous suspended polystyrene particles are preferably heated above the glass transition temperature (Tg) of the polystyrene particles, such that the polystyrene particles can be softened.
  • the heating is preferably conducted at a temperature at least 10 0 C higher than the glass transition temperature of the suspended polystyrene particles.
  • the heating time can be adjusted such that suitable penetration of graphite into the polystyrene particles will be achieved.
  • the heating time is longer than 3 hours.
  • the heating is conducted for a long period of time or at excessively high temperatures, a reduction in expansion ability can result due to the exhaustion of unreacted monomers.
  • the heating is conducted at a temperature of 110-130 0 C for 3-7 hours for a polystyrene ho- mopolymer, and in this case, a suitable effect of introducing graphite can be obtained.
  • the novel expandable polystyrene particles having graphite particles introduced therein are obtained by adding the graphite, the expanding agent and the C6-C10 aromatic hydrocarbon to the aqueous suspended polystyrene particles and heating the mixture.
  • the graphite is not uniformly distributed in the expandable polystyrene particle, but rather is present in a portion of the particle, because the graphite is added after completion of the polymerization of the monomer or after at least 80% of the monomer is polymerized.
  • the graphite is present in the surface layer of the expandable polystyrene particle.
  • an expandable polystyrene foam which contains graphite particles and has excellent insulating properties such as low thermal conductivity and high absorption rate and strength, is obtained by expanding the expandable polystyrene particles, which were obtained by adding the graphite, the expanding agent and the C6-C10 aromatic hydrocarbon to the aqueous suspended polystyrene particles and heating the mixture.
  • expansion conditions conventional conditions, which are used in the expansion of expandable polystyrene, can be used and are not specifically limited.
  • the expandable particles containing graphite can be expanded to a cell diameter of 70-200 microns by any person skilled in the art, and the expanded foam has excellent properties with respect to thermal conductivity, absorption rate, strength and the like.
  • the expandable polystyrene particles are spherical particles which have a specific gravity of 1.04 and contain the expanding agent uniformly distributed therein. These expandable polystyrene particles are prepared into a final polystyrene foam via a step of preparing pre-expanded beads through physical expansion using high-temperature steam. Regarding the cross-sectional shape of the pre-expanded beads, the boundary surface between the pre-expanded beads has a honeycomb shape, and the inside of each of the pre-expanded beads consists of innumerable cells.
  • the expanding agent will not be uniformly distributed inside the polystyrene particles, but rather will be concentrated around the graphite particles, so that the cells of the resulting polystyrene foam become large and non-uniform, resulting in deterioration in the physical properties of the foam.
  • the graphite is caused to be present in the surface layer of the polystyrene particles so as to improve thermal conductivity without influencing the diameter of the cells.
  • the content in reactor was allowed to react for 6 hours while maintaining the polymerization temperature of 88 0 C.
  • the content in the reactor was allowed to react at 125 0 C for 1 hour, followed by cooling, and the reaction product was discharged, dewatered and dried, thus obtaining polystyrene particles.
  • the particle size of the obtained polystyrene particles was in the range of 0.5-1.2 mm.
  • Suspending agent tricalcium phosphate; DET-10; Doobon Inc.: 0.25 wt%
  • Suspending agent tricalcium phosphate; DET-10; Doobon Inc.: 0.24 wt%
  • Example 1 graphite and toluene were sequentially fed into a reactor at room temperature in amounts as described below, allowed to react at 70 0 C for 1 hour, and heated to 125 0 C for 4 hours while adding a styrene monomer over 30 minutes. After completion of heating to 125 0 C, an expanding agent (pentane; SK Chemicals Co.) was added thereto, and the mixture was maintained at that temperature for 5 hours.
  • the expandable polystyrene particles thus obtained were dewatered, dried and then coated with a blending agent. The coated particles were evaluated for physical properties, and the evaluation results are shown in Table 1 below.
  • Expanding agent (pentane; SK Chemicals Co., Ltd.): 3.73 wt%
  • the content in the reactor was allowed to react for 6 hours while maintaining the polymerization temperature of 88 0 C, and an expanding agent was added thereto. In order to remove an unreacted styrene monomer and to impart expansion ability, the content in the reactor was then allowed to react at 125 0 C for 4 hours, followed by cooling. The cooled particles were discharged, dewatered, dried and then coated with a blending agent.
  • Suspending agent tricalcium phosphate; DET-10; Doobon Inc.: 0.24 wt%
  • Expanding agent (pentane; SK Chemicals Co., Ltd.): 3.81 wt%
  • the expandable polystyrene particles were prepared in the same manner as in Comparative Example 1.
  • the expandable polystyrene particles thus obtained were expanded, incorporated and applied with polypropylene glycol (PPG-400; Kumho Petrochemical Co., Ltd.) in an amount of 5 wt% based on the weight of the expanded beads, and then coated with 5 wt% of graphite (natural graphite; HCN-905; Korea Coma Ind. Co., Ltd.).
  • the coated beads were formed into the desired shape and evaluated for physical properties.
  • the physical properties of the graphite-coated article thus obtained are shown in Table 1 below.
  • This Comparative Example 3 was conducted in order to observe the physical properties of a final molding obtained while adding graphite during polymerization. This Example was carried out in the same manner as in Comparative Example 1, except that the polymerization of a styrene monomer was conducted after dissolving a given amount of polystyrene particles in the styrene monomer in order to increase the stability of a suspension.
  • pure water, polystyrene solution, a suspending agent, a flame retardant and graphite were sequentially fed into a reactor at room temperature, into which an initiator was fed during the heating of the mixture to a polymerization temperature of
  • Suspending agent polyvinyl alcohol; PVA-217; KURARAY: 0.24 wt%
  • Flame retardant Flame retardant (hexabromocyclododecane; CD75PTM; GLC): 0.35 wt%
  • Graphite naturally graphite; a mean particle size of 5 D; HCN-905; Korea Coma Ind.
  • Density mass (g) of formed article/volume (m ) of formed article.
  • Cell diameter mean diameter (D; measured with a microscope) between cell walls.
  • Water absorption rate value (g/100 cm ) obtained by dividing the amount of absorbed water by surface area according to "a method for measuring the amount of water absorbed in expanded polystyrene insulation materials" defined in Korean Industrial Standard KSM 3808.
  • Compression strength value (kgf/cm ) measured according to "a method for measuring the compression strength of expanded polystyrene insulation materials" defined in Korean Industrial Standard KSM 3808.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

L'invention concerne un procédé destiné à préparer des particules de polystyrène expansiblescontenant des particules de graphite. Ces particules de polystyrène expansibles contenant les particules de graphite sont préparées par ajout d'un graphite, d'un agent d'expansion et d'un hydrocarbure aromatique C6-C10 à des particules de polystyrène en suspension dans une solution aqueuse et par chauffage du mélange. Les particules de polystyrène expansibles préparées selon ce procédé permettent d'améliorer la conductivité thermique et présentent d'excellentes propriétés d'isolation thermique étant donné qu'elles forment de fines cellules après expansion.
PCT/KR2006/001194 2006-03-31 2006-03-31 Procédé de fabrication de particules de polystyrène expansibles présentant une excellente capacité d'isolation thermique Ceased WO2007114529A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/KR2006/001194 WO2007114529A1 (fr) 2006-03-31 2006-03-31 Procédé de fabrication de particules de polystyrène expansibles présentant une excellente capacité d'isolation thermique
KR1020070074967A KR100801275B1 (ko) 2006-03-31 2007-07-26 단열 특성이 우수한 발포성 폴리스티렌 입자의 2단계 제조방법

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PCT/KR2006/001194 WO2007114529A1 (fr) 2006-03-31 2006-03-31 Procédé de fabrication de particules de polystyrène expansibles présentant une excellente capacité d'isolation thermique

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA016792B1 (ru) * 2009-04-10 2012-07-30 Сергей Валерьевич Кажуро Способ получения пенопласта с графитовым наполнителем и теплоизоляционное изделие на его основе
JP2013181070A (ja) * 2012-02-29 2013-09-12 Sekisui Plastics Co Ltd スチレン系樹脂粒子、その製造方法、発泡性粒子、発泡粒子及び発泡成形体
WO2015052384A1 (fr) * 2013-10-11 2015-04-16 Bewi Styrochem Oy Billes de polystyrène de faible conductivité thermique
CN109679352A (zh) * 2018-12-28 2019-04-26 深圳德邦界面材料有限公司 一种导电泡棉及其制备方法
CN113444280A (zh) * 2020-03-24 2021-09-28 河北五洲开元环保新材料有限公司 一种有机插层水滑石改性可发性聚苯乙烯珠粒的制备方法
CN117802657A (zh) * 2023-12-29 2024-04-02 宁波意法科技有限公司 一种发热雪尼尔纱及其制备工艺

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Publication number Priority date Publication date Assignee Title
JPH05112665A (ja) * 1991-03-20 1993-05-07 Hitachi Chem Co Ltd 発泡性樹脂組成物、これを用いた熱可塑性発泡模型及び金属鋳造物の製造法
US6130265A (en) * 1997-05-14 2000-10-10 Basf Aktiengesellschaft Method for producing expandable styrene polymers containing graphite particles
WO2002055594A1 (fr) * 2001-01-13 2002-07-18 Basf Aktiengesellschaft Polymeres styreniques expansibles contenant des particules de carbone
WO2003033579A2 (fr) * 2001-10-11 2003-04-24 Basf Aktiengesellschaft Procede pour produire des polymeres de styrene expansibles
KR20060030155A (ko) * 2004-10-05 2006-04-10 금호석유화학 주식회사 단열 특성이 우수한 발포성 폴리스티렌 입자의 제조 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05112665A (ja) * 1991-03-20 1993-05-07 Hitachi Chem Co Ltd 発泡性樹脂組成物、これを用いた熱可塑性発泡模型及び金属鋳造物の製造法
US6130265A (en) * 1997-05-14 2000-10-10 Basf Aktiengesellschaft Method for producing expandable styrene polymers containing graphite particles
WO2002055594A1 (fr) * 2001-01-13 2002-07-18 Basf Aktiengesellschaft Polymeres styreniques expansibles contenant des particules de carbone
WO2003033579A2 (fr) * 2001-10-11 2003-04-24 Basf Aktiengesellschaft Procede pour produire des polymeres de styrene expansibles
KR20060030155A (ko) * 2004-10-05 2006-04-10 금호석유화학 주식회사 단열 특성이 우수한 발포성 폴리스티렌 입자의 제조 방법

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA016792B1 (ru) * 2009-04-10 2012-07-30 Сергей Валерьевич Кажуро Способ получения пенопласта с графитовым наполнителем и теплоизоляционное изделие на его основе
JP2013181070A (ja) * 2012-02-29 2013-09-12 Sekisui Plastics Co Ltd スチレン系樹脂粒子、その製造方法、発泡性粒子、発泡粒子及び発泡成形体
WO2015052384A1 (fr) * 2013-10-11 2015-04-16 Bewi Styrochem Oy Billes de polystyrène de faible conductivité thermique
CN109679352A (zh) * 2018-12-28 2019-04-26 深圳德邦界面材料有限公司 一种导电泡棉及其制备方法
CN113444280A (zh) * 2020-03-24 2021-09-28 河北五洲开元环保新材料有限公司 一种有机插层水滑石改性可发性聚苯乙烯珠粒的制备方法
CN113444280B (zh) * 2020-03-24 2022-12-06 河北五洲开元环保新材料有限公司 一种有机插层水滑石改性可发性聚苯乙烯珠粒的制备方法
CN117802657A (zh) * 2023-12-29 2024-04-02 宁波意法科技有限公司 一种发热雪尼尔纱及其制备工艺

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