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WO2010005147A1 - Composition de résine ignifuge exempte d'halogène avec des ignifugeants secondaires à base de nanoargile et de borate de zinc - Google Patents

Composition de résine ignifuge exempte d'halogène avec des ignifugeants secondaires à base de nanoargile et de borate de zinc Download PDF

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Publication number
WO2010005147A1
WO2010005147A1 PCT/KR2008/005756 KR2008005756W WO2010005147A1 WO 2010005147 A1 WO2010005147 A1 WO 2010005147A1 KR 2008005756 W KR2008005756 W KR 2008005756W WO 2010005147 A1 WO2010005147 A1 WO 2010005147A1
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WIPO (PCT)
Prior art keywords
flame
weight
retardant
resin composition
parts
Prior art date
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Ceased
Application number
PCT/KR2008/005756
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English (en)
Inventor
Ju-Ha Lee
Gi-Joon Nam
Won-Jung Kim
Jung-Won Park
Whan-Ki Kim
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LS Cable and Systems Ltd
Original Assignee
LS Cable Ltd
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Filing date
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Publication of WO2010005147A1 publication Critical patent/WO2010005147A1/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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing atoms other than carbon or hydrogen
    • C08L23/0853—Ethene vinyl acetate copolymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/10—Metal compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond

Definitions

  • the present invention relates to a flame-retardant resin composition with nanoclay and a zinc borate secondary flame retardant. And, specifically, the present invention relates to a halogen-free flame-retardant resin composition including a base resin of a polyolefin-based polymer blend, an inorganic flame retardant, nanoclay treated with an organic modifier and a secondary flame retardant.
  • Polyolefin resin is widely used as a flame-retardant insulating material for an insulator or a sheath of an electric cable. But, polyolefin resin easily burns, and in case of fire, produces a large amount of smoke containing poisonous gas, resulting in such secondary damage as loss of lives.
  • the conventional art used a flame-retardant insulating materials employing such halogen elements as bromine and chlorine.
  • halogen-based flame-retardant insulating materials are not safe for manufacturing processes and uses.
  • halogen-based flame-retardant insulating materials produce poisonous gas such as dioxin, and thus are harmful to the environment. By this reason, recently the demand for a halogen-free flame-retardant polyolefin resin is increasing.
  • An object of the present invention is to provide a halogen-free flame-retardant resin composition with small amounts of an inorganic flame retardant and a secondary flame retardant, having better flame retardancy and mechanical properties than a conventional flame-retardant resin composition.
  • an aspect of the present invention provides a flame- retardant resin composition including a polyolefin resin and a polar-substituted reactive olefin resin.
  • the flame-retardant resin composition includes D) a base resin including a polyolefin resin and a polar-substituted reactive olefin resin, D) 1 to 15 parts by weight of a modified nanoclay based on 100 parts by weight of the base resin, D) 50 to 200 parts by weight of an inorganic flame retardant based on 100 parts by weight of the base resin, and D) 5 to 30 parts by weight of a zinc borate secondary flame retardant based on 100 parts by weight of the base resin, wherein the base resin is a mixture of 50 to 99 weight% polyolefin resin and 1 to 50 weight% polar-substituted reactive olefin resin.
  • the zinc borate secondary flame retardant may be a mixture including 15 to 60 weight% of boron trioxide (B 2 O 3 ) and 40 to 85 weight% of zinc oxide, or a mixture including 15 to 60 weight% of boron trioxide, 40 to 80 weight% of zinc oxide and a remainder of water.
  • the modified nanoclay of the present invention may be obtained by treating at least one selected from the group consisting of montmorillonite, hectorite, saponite and beidellite with an amino acid-based or alkyl ammonium-based organic modifier.
  • the present invention provides a cable having a sheath layer or insulating layer formed using the above-mentioned composition, and a heat shrinkable tube manufactured using the above-mentioned composition.
  • FIG. 1 is a graph illustrating a change in heat release rate with time in flame- retardant resin compositions prepared according to an example of the present invention and comparative examples using a cone calorimeter. Best Mode for Carrying out the Invention
  • a "polar-substituted reactive olefin resin” is a polymer obtained by polymerizing a double-bonded monomer having a polar functional group, or a copolymer obtained by grafting a monomer having a polar functional group onto a polyolefin resin, or a combination thereof.
  • nonanoclay is a kind of silicate mineral and is modified.
  • Nanoclay means a silicate clay mineral having nanometer-sized layers when exfoliated or dispersed in a polyolefin resin as a layered structure.
  • the nanoclay typically includes smectite minerals.
  • modified nanoclay is obtained by treating silicate mineral nanoclay with an organic reagent (hereinafter referred to as "an organic modifier") so that an organic material is inserted into the silicate mineral nanoclay, so as to decrease hydrophilicity and increase hydrophobicity of the hy- drophilic silicate mineral nanoclay.
  • an organic modifier organic reagent
  • the "modified nanoclay” has the improved compatibility with the polyolefin resin by increasing hydrophobicity through treatment with the organic modifier.
  • a flame-retardant resin composition according to the present invention includes a base resin of an olefin resin blend, an inorganic flame retardant, modified nanoclay and a zinc borate secondary flame retardant.
  • the base resin of the flame-retardant resin composition according to the present invention is a polymer blend including 50 to 99 weight% of a polyolefin resin and 1 to 50 weight% of a polar-substituted reactive olefin resin.
  • the flame-retardant resin composition according to the present invention includes 50 to 200 parts by weight of an inorganic flame retardant based on 100 parts by weight of the base resin, 5 to 30 parts by weight of a zinc borate secondary flame retardant based on 100 parts by weight of the base resin, and 1 to 15 parts by weight of modified nanoclay based on 100 parts by weight of the base resin.
  • the polyolefin resin of the base resin according to the present invention is a polymer obtained by polymerizing a monomer having unsaturated double bonds.
  • the polyolefin resin may be at least one selected from the group consisting of high-density, medium- density, low-density and linear low-density poly ethylenes, polypropylene, alpha-olefin block and random copolymers having 3 to 15 carbon atoms, an ethylene- vinyl acetate (EVA) copolymer, an ethylene-ethyl acrylate copolymer, and an ethylene-methyl acrylate copolymer, however the present invention is not limited in this regard.
  • EVA ethylene- vinyl acetate
  • the alpha-olefin block or random copolymer having 3 to 15 carbon atoms may be an ethylene/1 -octene copolymer or an ethylene/ 1-butene copolymer.
  • an ethylene-vinyl acetate (EVA) resin is used as polyolefin resin, preferably the ethylene- vinyl acetate (EVA) resin is polymer polymerized with 10 to 40 weight% of vinyl acetate monomer out of total monomers.
  • the polar-substituted reactive olefin resin of the base resin according to the present invention has a polar functional group that improves compatibility between nanoclay, a zinc borate secondary flame retardant and the tissue of the polymer resin.
  • ionic materials such as a metal hydroxide flame retardant, nanoclay and a zinc borate secondary flame retardant can be uniformly dispersed in the tissue of the base resin to increase flame retardant characteristics.
  • the polar-substituted reactive olefin resin of the present invention may be olefin resin having a polar functional group-containing monomer such as, for example, an ethylene-vinyl acetate copolymer. Meanwhile, for this purpose, a polar functional group may be grafted onto a backbone of olefin resin having less polarity.
  • the polar functional group-grafted olefin resin may be used as polar-substituted reactive olefin resin.
  • a grafting monomer is a general monomer, and if it has polarity, any monomer may be used as a grafting monomer without limit, for example maleic acid, maleic anhydride or glycidyl methacrylate.
  • the content of the grafting monomer may be controlled variously depending on the kind of the grafting monomer and characteristics required for nanocomposites to be produced, preferably 0.05 to 5 parts by weight based on 100 parts by weight of polyolefin resin to be grafted.
  • a polar functional group-grafted copolymer that can be used in the present invention is preferably maleic anhydride-grafted polyethylene, glycidyl methacrylate-grafted polyethylene, a maleic anhydride-grafted ethylene-vinyl acetate copolymer, a glycidyl methacrylate-grafted ethylene-vinyl acetate copolymer, a maleic anhydride-grafted ethylene-ethyl acrylate copolymer or a glycidyl methacrylate-grafted ethylene-ethyl acrylate copolymer, more preferably, a maleic anhydride-grafted ethylene-vinyl acetate copolymer.
  • the base resin of the present invention includes 50 to 99 weight% of the polyolefin resin and 1 to 50 weight% of the polar-substituted reactive olefin resin.
  • the polar-substituted reactive olefin resin is included less than 1 weight% in the base resin, a property improving effect is not expected, and in the case that the polar- substituted reactive olefin resin is included more than 50 weight%, properties are deteriorated.
  • the modified nanoclay of the flame-retardant resin composition according to the present invention is exfoliated in the base resin, and has the remarkably improved affinity and compatability between a nanoclay component and an olefin resin matrix.
  • the nanoclay existing exfoliated in a plastic resin has a flexible sheet structure, wherein the sheet has thickness of several nanometers.
  • the nanoclay is thin, and thus can receive a plurality of silicate sheets. Accordingly, although a small amount of nanoclay is used, plenty of silicate particles can be dispersed in the plastic resin.
  • a polyolefin-silicate mineral nanocomposite containing nanoclay provides flame retardant characteristics upon use with a flame retardant such as metal hydroxide. This is because the nanocomposite retards a burning speed and obviously forms char on the surface. And, advantageously the nanocomposite considerably reduces drip and sparkling of flame during burning.
  • the modified nanoclay of the present invention includes various silicate minerals of nanometer size depending on characteristics required for a final nanocomposite.
  • a silicate mineral for use in an olefin-based masterbatch of the present invention is at least one selected from the group consisting of montmorillonite, hectorite, saponite, nontronite, beidellite, vermiculite and halloysite, however the present invention is not limited in this regard.
  • the present invention uses nanoclay (modified nanoclay) treated with an organic modifier to relieve strong hydrophilicity and polarity of silicate mineral nanoclay and increase compatibility with a hydrophobic polymer resin.
  • the organic modifier used to produce modified nanoclay may be an amino acid-based organic modifier (having an amino group and a carboxyl group) or an alkyl ammonium-based organic modifier such as quarternary ammonium (tetraalkyl ammonium).
  • the organic modifier dominates the surface of a silicate mineral of nanoclay to increase affinity between a resin and nanoclay.
  • the modified nanoclay is included less than 1 part by weight in the flame-retardant resin composition of the present invention, it is not preferable because the content of the modified nanoclay is insufficient to form char and improve flame re- tardancy, and in the case that the modified nanoclay is included more than 15 parts by weight, it is not preferable because a product manufactured using the composition has poor elongation and use of an excessive amount of modified nanoclay increases costs, not flame retardancy.
  • the inorganic flame retardant forms a solid film during burning to help easy formation of char which improves flame retardancy.
  • the inorganic flame retardant includes metal hydroxide, preferably aluminium hydroxide and magnesium hydroxide.
  • the aluminium hydroxide and magnesium hydroxide may be not surface-treated or may be surface-treated with a coating agent selected from the group consisting of vinyl silane, a fatty acid and aminopolysiloxane.
  • the inorganic flame retardant of the present invention is included less than 50 part by weight, the above-mentioned flame retardant effect is not obtained, and in the case that the inorganic flame retardant is included more than 200 parts by weight, the composition of the present invention has poor processing characteristics of an extrusion process and the unit cost of production increases, resulting in bad economical efficiency.
  • the zinc borate secondary flame retardant has supplementary flame retardant characteristics to assist the inorganic flame retardant to suppress smoking, promote char formation, prevent afterglow and reduce an amount of heat release. If it is capable of providing zinc ion and borates, any mixture can be used as the zinc borate secondary flame retardant.
  • a general formula of the zinc borate secondary flame retardant may be represented by X(ZnO y )-Z(B 2 O 3 ) 1 WH 2 O.
  • the zinc borate secondary flame retardant may be a mixture including 15 to 60 weight% of boron trioxide (B 2 O 3 ) and 40 to 85 weight% of zinc oxide (ZnO), or a mixture including 15 to 60 weight% of boron trioxide, 40 to 80 weight% of zinc oxide and a remainder of water.
  • B 2 O 3 boron trioxide
  • ZnO zinc oxide
  • the zinc borate secondary flame retardant is included less than 5 parts by weight, a supplementary flame retardant effect is not obtained, and in the case that the zinc borate secondary flame retardant is included more than 30 parts by weight, flame retardant characteristics are not significantly improved over the case that 5 to 30 parts by weight of a zinc borate secondary flame retardant is included, resulting in bad economical efficiency.
  • the flame-retardant resin composition of the present invention may further include additives other than the above-mentioned components.
  • the additives may include an antioxidant, a lubricant and a processing aid.
  • the antioxidant includes a thioester-based compound, a phenol-based compound, or mixtures thereof.
  • 0.5 to 10 parts by weight of the antioxidant is added based on 100 parts by weight of the base resin.
  • 0.5 to 10 parts by weight of the lubricant and 0.5 to 10 parts by weight of the processing aid are added based on 100 parts by weight of the base resin.
  • the resin composition of the present invention may be processed in various shapes by a typical method for processing a thermoplastic resin.
  • the typical method may use an extruding, molding or calendering process.
  • the halogen-free flame-retardant resin composition according to the present invention has excellent mechanical properties as described below, and thus has excellent processing characteristics, is capable of retarding a burning speed, and releases a small amount of heat, which leads to excellent flame retardancy.
  • the flame-retardant resin composition of the present invention has properties appropriate for polymer compositions for an equipment wire and a heat shrinkable tube or polymer materials for halogen-free flame-retardant cable and sheath requiring vertical flame re- tardance.
  • the flame retardancy of the flame-retardant resin composition according to the present invention may be measured using various indexes, and the indexes are as follows.
  • Sheet burning rate a criteria for measuring a burning speed of a sheet-shaped flame-retardant material. It is measured according to UL-94, a standard by Underwriters Laboratories of the USA. It is a value of the burn length divided by the burn time after burning of a predetermined sample. The smaller the value, the better the flame retardancy.
  • Peak Heat Release Rate a maximum instantaneous value of heat release flux per surface area of a sample. The smaller the value, the better the flame retardancy. It is generally indicated by unit of kW. In a burning experiment of a flame- retardant resin composition including metal hydroxide, two peak heat release rates are observed, and thus, a first peak heat release rate and a second peak heat release rate are recorded.
  • TTPHRR First Time to First Peak Heat Release Rate
  • TTPHRR Second Time to First Peak Heat Release Rate
  • TTI Time To Ignition
  • FPI Fire Performance Index
  • FIGRA Fire Growth RAte
  • An aspect of the present invention provides a flame-retardant resin composition having a sheet burning rate of 0.7 mm/s or less, FPI of 0.4 s/kW or more and a second FIGRA of 0.5 kW/s or less.
  • the sheet burning rate is 0.7 mm/s or less or FPI is 0.4 s/kW or more
  • flame retardant characteristics are excellent during burning, resulting in effective oxygen index or vertical flame retardance
  • the second FIGRA is 0.5 kW/s or less
  • stable char is formed after burning, resulting in effective flame retardant characteristics.
  • Flame-retardant resin compositions of example and comparative examples were prepared with the contents of Table 1, and the flame-retardant resin compositions according to the present invention and the prior art were compared with each other in aspect of flame retardancy and mechanical properties.
  • the flame-retardant resin composition of comparative example 1 included only an inorganic flame retardant, and the flame-retardant resin composition of comparative example 2 included additionally a zinc borate secondary flame retardant.
  • the flame- retardant resin composition of example 1 included an inorganic flame retardant, a zinc borate secondary flame retardant and modified nanoclay according to the present invention.
  • an ethylene- vinyl acetate (EVA) copolymer polymerized with 28 weight% vinyl acetate monomer was used as polyolefin resin.
  • a modified resin for example a maleic anhydride-grafted EVA copolymer was used as polar-substituted reactive olefin resin.
  • maleic anhydride was used as polar-substituted reactive olefin resin.
  • 0.05 to 5 parts by weight of maleic anhydride was used based on 100 parts by weight of the EVA resin.
  • the polyolefin resin and the polar-substituted reactive olefin resin were blended in a weight ratio of 80:20 to produce a base resin.
  • the example 1 used Sud-Chemie's Nanofil 5 (Germany), i.e., nanoclay wherein montmorillonite, a member of the smectite family is surface- treated with a quarternary ammonium chloride organic modifier, for example dis- tearyldimethyl ammonium chloride.
  • the modified nanoclay was melt-blended and exfoliated in the base resin by compounding.
  • a process for exfoliating nanoclay in a resin includes melting, polymerization and compounding. The compounding process is advantageous in commercial production.
  • a mixture including 48 weight% of boron trioxide, 47.5 weight% of zinc oxide and 4.5 weight% of water was used as the zinc borate secondary flame retardant.
  • LDPE Low Density Poly Ethylene wax
  • a phenolic primary antioxidant for example [pentaerythritol tetrakis(3-3,5-di-tert-butyl-4-hydroxyphenyl propionate)] was used as an antioxidant, and a monomer with high reactivity leading to a rapid curing reaction by a free radical reaction and a high crosslinking density, for example trimethylolpropane trimethacrylate was used as a crosslinking aid.
  • the resin composition of comparative example 1 included a larger amount of magnesium hydroxide flame retardant than that of example 1.
  • the sheet burning test was made according to UL-94 standard that was modified slightly for relative comparison. The sheet burning test was performed on each sample of 25 cm length and 1.0 mm thickness for 30 seconds one time, and burn time (second) and burn length (mm) was measured.
  • the cone calorimeter test was performed by applying a heat flux of 50 kW/m 2 to the sample at 787 0 C, and burning characteristics were measured by recording magnitude and growth rate of fire and amounts of radiation of smoke and poisonous gas.
  • the sample for the cone calorimeter test had 100 mm x 100 mm size and 3 mm thickness.
  • Table 2 shows the test results of flame retardancy and mechanical properties of the samples according to example and comparative examples, and FIG. 1 shows a change in heat release rate with time.
  • the sample of example 1 according to the present invention had the considerably improved flame retardancy.
  • a sheet burning rate of the sample of example 1 was reduced by at least 40% when compared with the sample of comparative 1.
  • a peak heat release rate of the sample of example 1 was reduced remarkably when compared with the sample of comparative 1.
  • the compositions of example and comparative examples showed a similar level in time to first peak heat release rate.
  • the composition of the present invention showed even longer time to second peak heat release rate than that of the prior art, and thus it is found that the composition of the present invention had a remarkable improvement in flame retardancy.
  • time to peak heat release rate the compositions of example and comparative examples showed a similar level in time to first peak heat release rate, however the composition of the present invention showed the considerably increased time to second peak heat release rate than that of the prior art, and thus had a remarkable improvement in flame retardancy.
  • Table 2 shows an increase in time to peak heat release rate of the composition of example 1.
  • the time to second peak heat release rate indicates stability of char, and the time to second peak heat release rate of the example 1 was about two times than that of the comparative example 1.
  • the example 1 and the comparative example 1 had a similar level in the first FIGRA, however the example 1 had superiority over the comparative example 1 in the second FIGRA.
  • composition of the present invention has excellent performance, in particular
  • the samples of comparative examples included a larger amount of magnesium hydroxide flame retardant than the sample of example 1, however the peak heat release rate of the sample of example 1 was reduced remarkably. In particular, the reduced second peak heat release rate of example 1 was about half of those of the comparative examples.
  • the flame retardancy of the present invention and the prior art was compared with each other through indexes, for example a sheet burning rate, a fire performance index and a fire growth rate.
  • indexes for example a sheet burning rate, a fire performance index and a fire growth rate.
  • the example 1 had superiority over the comparative examples 1 and 2 in a fire performance index and a sheet burning rate, and the example 1 and the comparative examples 1 and 2 showed a similar level in fire growth rate.
  • the present invention forms stable char during burning and releases a small amount of heat, and thus is effective in retarding a burning speed after ignition.
  • the flame -retardant resin composition of the present invention has a low heat release rate and a stable char formation, resulting in excellent flame retardancy. And, because of excellent elongation and processing characteristics, the flame-retardant resin composition of the present invention can obtain excellent mechanical properties and flame retardancy with only small amounts of nanoclay and a zinc borate secondary flame retardant.
  • the present invention provides a flame -retardant resin composition that does not contain halogen and thus is thought to be environmentally friendly, and has excellent flame retardant characteristics with only small amounts of nanoclay and a zinc borate secondary flame retardant.
  • the flame-retardant resin composition of the present invention uses small amount of a flame retardant and a secondary flame retardant, and thus provides improvement in mechanical properties such as elongation and tensile strength when compared with a conventional flame-retardant composition.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention porte sur une composition de résine ignifuge qui comprend une résine de base comprenant une résine de polyoléfine et une résine d'oléfine réactive à substitution polaire; 1 à 15 parties en poids d'une nanoargile modifiée sur la base de 100 parties en poids de la résine de base; 50 à 200 parties en poids d'un ignifugeant inorganique sur la base de 100 parties en poids de la résine de base, et 5 à 30 parties en poids d'un ignifugeant secondaire de borate de zinc sur la base de 100 parties en poids de la résine de base. La composition de résine ignifuge, qui est exempte d'halogène et qui présente d'excellentes caractéristiques de retard de flamme et de bonnes propriétés mécaniques, est ainsi appropriée pour des compositions de polymères pour un fil d'appareillage et un tube pouvant thermorétrécir ou des matériaux polymères pour un câble et une gaine ignifuges sans halogène nécessitant un retard de flamme verticale.
PCT/KR2008/005756 2008-07-07 2008-09-30 Composition de résine ignifuge exempte d'halogène avec des ignifugeants secondaires à base de nanoargile et de borate de zinc Ceased WO2010005147A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2008-0065560 2008-07-07
KR1020080065560A KR101012908B1 (ko) 2008-07-07 2008-07-07 나노점토와 붕산아연계 보조 난연제를 적용한 비할로겐난연 수지 조성물

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WO2010005147A1 true WO2010005147A1 (fr) 2010-01-14

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Cited By (5)

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CN102775819A (zh) * 2012-08-27 2012-11-14 句容宁武新材料发展有限公司 一种无机复合阻燃剂的改性方法
WO2013091575A1 (fr) * 2011-12-22 2013-06-27 Dow Global Technologies Llc Compositions et procédés de production de polyoléfines réticulées
WO2013036573A3 (fr) * 2011-09-07 2013-06-27 Polyone Corporation Composés polyoléfiniques non halogénés présentant de bonnes propriétés de transformation
CN109749200A (zh) * 2018-12-29 2019-05-14 安徽天康(集团)股份有限公司 一种中高压电力电缆
CN118956051A (zh) * 2024-10-15 2024-11-15 广东澳通特种电缆有限公司 一种耐极端环境的特种电缆

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Publication number Priority date Publication date Assignee Title
US10497491B2 (en) 2017-03-30 2019-12-03 Ls Cable & System Ltd. Halogen-free flame-retardant polyolefin insulation composition and cable having an insulating layer formed from the same
WO2018182094A1 (fr) * 2017-03-30 2018-10-04 엘에스전선 주식회사 Composition isolante à base de polyoléfine ignifuge sans halogène, et câble comprenant une couche isolante formée à partir de celle-ci
CN109370024B (zh) * 2018-09-14 2021-08-24 河南科技大学 一种增韧无卤阻燃eva/pa6复合材料及其制备方法

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