KR101256800B1 - Halogen free flame-retardant crosslinked polyolefin insulation wire - Google Patents
Halogen free flame-retardant crosslinked polyolefin insulation wire Download PDFInfo
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- KR101256800B1 KR101256800B1 KR1020120094389A KR20120094389A KR101256800B1 KR 101256800 B1 KR101256800 B1 KR 101256800B1 KR 1020120094389 A KR1020120094389 A KR 1020120094389A KR 20120094389 A KR20120094389 A KR 20120094389A KR 101256800 B1 KR101256800 B1 KR 101256800B1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/448—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from other vinyl compounds
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
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Abstract
Description
본 발명은 저독성 난연 가교폴리올레핀 절연전선의 피복절연체 열경화성수지 조성물에 관한 것으로서, 더욱 상세하게는 유기과산화물을 사용한 화학적 가교방식에 의한 HFIX (Halogen Free Flame-retardant Crosslinked Polyolefin Insulation Wire; KS C 3341 규격) 절연전선용 피복재료의 조성물로 압출성형-고온고압 스팀 가교관 장치에서 연속압출 가교방식에 의한 전선의 제조에 사용되며, 유기과산화물에 의한 화학적 가교방식으로 제조되고, 기계적, 전기적, 열적, 환경적 특성 및 난연 특성을 만족시키는 특성을 갖는 절연전선의 피복절연체 열경화성수지 조성물에 관한 것이다. The present invention relates to a coating insulator thermosetting resin composition of low-toxic flame-retardant cross-linked polyolefin insulated wire, and more particularly to HFIX (Halogen Free Flame-retardant Crosslinked Polyolefin Insulation Wire; KS C 3341 standard) insulation by chemical crosslinking method using organic peroxide. It is a composition of coating material for electric wire and used for the production of electric wire by continuous extrusion crosslinking method in extrusion molding-high temperature high pressure steam cross-linking device, manufactured by chemical crosslinking method by organic peroxide, mechanical, electrical, thermal, environmental characteristics And a coating insulator thermosetting resin composition of an insulated wire having a property of satisfying flame retardant properties.
기존의 절연전선인 IV 및 HIV 전선의 절연피복체로 사용되는 PVC 조성물은 인체에도 유해할 뿐만 아니라, 환경에 오염성을 유발하여, 그 사용 자체가 엄격히 제한되거나 금지되고 있는 실정이다.PVC composition used as the insulation coating of the existing insulated wire IV and HIV wire is not only harmful to the human body, but also causes pollution to the environment, its use is strictly restricted or prohibited.
또한 기존의 절연전선인 IV 및 HIV 전선의 절연피복체로 사용되는 PVC 조성물은 열에 대한 가소성 특성을 가지고 있으므로 전선의 피복체로 사용시 도체 최대허용온도가 낮아 내열 안전성이 떨어진다. 이를 대체 개선한 전선이 HFIX 무독성 난연가교폴리올레핀 절연전선이다. 이 열경화성 가교폴리올레핀 재료는 인체에 무해하며 친환경적 특성을 가지며, 열경화성 특성으로 도체 허용온도가 열가소성에 비하여 높으므로 화재, 내열 및 신뢰성이 높아 사용 안정성이 높다.In addition, the PVC composition used as the insulation coating of the existing insulated wire IV and HIV wire has a plasticity property against heat, so when used as a sheath of the wire, the maximum allowable temperature of the conductor is low, which lowers heat resistance safety. An alternative improvement is the HFIX nontoxic flame retardant crosslinked polyolefin insulated wire. This thermosetting crosslinked polyolefin material is harmless to the human body and has environmentally friendly characteristics. The thermosetting property allows the conductor to have a higher allowable temperature than thermoplastics, and thus has high fire, heat resistance and reliability, and thus high use stability.
HFIX 전선의 제조방식으로는 크게는 3가지 방법으로 분류된다. 물론 그 3가지 제조방식에서 제조 가공되는 피복절연체의 조성물은 각기 다르며 다른 특성을 갖는다.The manufacturing method of HFIX wire is classified into three methods. Of course, the composition of the coating insulator manufactured and processed by the three manufacturing methods are different and have different characteristics.
본 발명은 HFIX 전선의 연속압출가교방식에 의한 제조와 HFIX 전선이 요구하는 제반 특성을 만족하는 무독난연폴리올레핀절연전선용 피복절연체의 열경화성 수지 조성물을 제공함에 그 목적이 있다.It is an object of the present invention to provide a thermosetting resin composition of a coated insulator for a non-toxic flame retardant polyolefin insulated wire that satisfies all characteristics required by the HFIX wire by the continuous extrusion crosslinking method.
본 발명은 2차내후성방지제를 기준으로 하여 에틸렌비닐아세테이트 20 내지 40 중량부, 에틸렌메틸아크릴레이트 30 내지 40 중량부, 선형저밀도 폴리에틸렌 20 내지 30 중량부, 무수말레인산그랍티드 에틸렌 비닐아세테이트 10 내지 20 중량부, 씰란화합물 코팅처리 된 수산화마그네슘 150 내지 180 중량부, 1차산화방지제 3 내지 5 중량부, 2차산화방지제 1내지 2 중량부, 1차내후성방지제 0.5 내지 2 중량부, 2차내후성방지제 1 중량부, 압출가공향상제 2 내지 5 중량부, 가교조제 2 내지 5 중량부, 가교제 5 내지 8 중량부로 이루어지는 혼합조성물로 달성된다.The present invention is based on the secondary weather resistance agent based on 20 to 40 parts by weight of ethylene vinyl acetate, 30 to 40 parts by weight of ethylene methyl acrylate, 20 to 30 parts by weight of linear low density polyethylene, 10 to 20 parts by weight of maleic anhydride ethylene vinyl acetate Part, 150 parts by weight to 180 parts by weight of magnesium hydroxide coated with the sealane compound, 3 to 5 parts by weight of the primary antioxidant, 1 to 2 parts by weight of the secondary antioxidant, 0.5 to 2 parts by weight of the primary weathering inhibitor, and secondary weathering inhibitor 1 It is achieved by the mixed composition which consists of a weight part, 2-5 weight part of extrusion process improvement agents, 2-5 weight part of crosslinking adjuvant, and 5-8 weight part of crosslinking agents.
본 발명의 조성물은 압출성형과 동시에 고온고압스팀관내에서 연속적으로 가교되는 제조방식 소위 연속압출가교방식으로 HFIX(Halogen Free Flame-retardant Crosslinked Polyolefin Insulation Wire) 무독성 난연가교폴리올레핀 절연전선의 제조를 가능하게 하며, 인체에 무해하며 친환경적특성을 가지며, 또한 열경화성특성으로 도체 허용온도가 열가소성에 비하여 높으므로 화재, 내열 및 신뢰성이 높아 사용 안정성이 높다
The composition of the present invention enables the production of HFIX (Halogen Free Flame-retardant Crosslinked Polyolefin Insulation Wire) non-toxic flame-retardant cross-linked polyolefin insulated wire by the production method that is continuously crosslinked in a high temperature high pressure steam tube simultaneously with extrusion molding. It is harmless to the human body and has eco-friendly characteristics. Also, the thermosetting property allows the conductor to have a higher temperature than thermoplastics.
본 발명은 2차내후성방지제를 기준으로 하여 에틸렌비닐아세테이트 20 내지 40 중량부, 에틸렌메틸아크릴레이트 30 내지 40 중량부, 선형저밀도 폴리에틸렌 20 내지 30 중량부, 무수말레인산그랍티드 에틸렌 비닐아세테이트 10 내지 20 중량부, 씰란화합물 코팅처리 된 수산화마그네슘 150 내지 180 중량부, 1차산화방지제 3 내지 5 중량부, 2차산화방지제 1내지 2 중량부, 1차내후성방지제 0.5 내지 2 중량부, 2차내후성방지제 1 중량부, 압출가공향상제 2 내지 5 중량부, 가교조제 2 내지 5 중량부 및 가교제 5 내지 8 중량부로 이루어지는 것을 특징으로 하는 저독성 난연 가교폴리올레핀 절연전선용 피복절연체 조성물 및 이를 이용하여 제조된 전선에 관한 것이다.The present invention is based on the secondary weather resistance agent based on 20 to 40 parts by weight of ethylene vinyl acetate, 30 to 40 parts by weight of ethylene methyl acrylate, 20 to 30 parts by weight of linear low density polyethylene, 10 to 20 parts by weight of maleic anhydride ethylene vinyl acetate Part, 150 parts by weight to 180 parts by weight of magnesium hydroxide coated with the sealane compound, 3 to 5 parts by weight of the primary antioxidant, 1 to 2 parts by weight of the secondary antioxidant, 0.5 to 2 parts by weight of the primary weathering inhibitor, and secondary weathering inhibitor 1 To a low toxicity flame-retardant cross-linked polyolefin insulated wire comprising a weight part, 2 to 5 parts by weight of the extrusion process improver, 2 to 5 parts by weight of the crosslinking aid and 5 to 8 parts by weight of the crosslinking agent, and a wire manufactured using the same will be.
본 발명의 열경화성 폴리올레핀 수지의 조성물은 유기과산화물에 의하여 압출성형과 동시에 고온고압 스팀가교관에서 연속적으로 단시간에 가교가 되어 제조되는 화학가교(Chemical crosslinked Polyolefin) 방식으로 제조되는 조성물이다.The composition of the thermosetting polyolefin resin of the present invention is a composition prepared by a chemical crosslinked polyolefin produced by cross-linking in a short time continuously in a high temperature and high pressure steam cross-linker at the same time extrusion molding with an organic peroxide.
본 발명의 열경화성 폴리올레핀 수지의 조성물은 압출성형 후 저온-상압-장시간에 걸쳐서 가교가 되는 수가교방식(Water crosslinked Polyolefin)과 압출성형 후 별도의 전자조사가교방식(Radition crosslinked Polyolefin)으로 제조되는 방식이 있다.The composition of the thermosetting polyolefin resin of the present invention is a cross-linked polyolefin (Water crosslinked polyolefin) that is cross-linked over a low temperature-pressure-long time after extrusion molding and a method of manufacturing a separate cross-linked polyolefin after extrusion molding (Radition crosslinked Polyolefin) have.
본 발명 조성물을 사용한 HFIX 전선의 제조방식인 화학가교방식, 즉 압출성형과 동시에 고온고압 스팀관내에서 연속적으로 가교되는 제조방식 소위 연속압출가교방식에 비하여, 수가교방식과 전자조사가교방식용 수지조성물은 압출성형한 반제품을 일정시간 경과 후 가교를 별도의 라인에서 시키는 소위 분리형 압출-가교 방식이므로, 본 발명 조성물인 연속압출가교방식에 비하여 단위 시간당 생산능력이 낮으며, 또한 최소단위의 완성품을 제조시 소요되는 제조리드타임이 길으므로 전체적으로 제조의 효율성인 생산성이 낮다.
Chemical crosslinking method of manufacturing the HFIX wire using the composition of the present invention, that is, the resin composition for the crosslinking method and the electron irradiation crosslinking method as compared to the so-called continuous extrusion crosslinking method of the production method that is continuously crosslinked in a high-temperature, high-pressure steam tube simultaneously with the extrusion molding. Since the extruded semi-finished product is a so-called separate extrusion-crosslinking method in which crosslinking is performed in a separate line after a certain time, production capacity per unit time is lower than that of the continuous extrusion crosslinking method of the present invention, and a finished product of a minimum unit is manufactured. Due to the long manufacturing lead time required, the overall productivity, which is the efficiency of manufacturing, is low.
실시예 1Example 1
에틸렌비닐아세테이트(EVA) 30g, 에틸렌메틸아크릴레이트(EMA) 35g, 선형저밀도 폴리에틸렌(DF 810: polyethylene) 25g, 무수말레인산그랍티드 에틸렌 비닐아세테이트(FUS N493: ethylene octane co-polymer) 10g, 씰란화합물 코팅처리된 수산화마그네슘(TAJIMA M: magnesium dihydroxide coated silane) 150g, 2가지 산화방지제 중에서 1차 산화방지제(ZNO: zinc oxide) 5g, 2차 산화방지제(ANT-1010: tetrakis(methylene-3-(3,5-di-tert-butyl-4-hydroxylphenyl)propionate)methane) 1g, 2가지 내후성 방지제 중에서 1차 내후성방지제(MTI: mercaptobenzo tri-imidazole) 1g, 2차 내후성방지제(S/A: stearic acid) 1g, 압출가공향상제(AM-CP: oleamide) 2g, 가교조제(WB-16: mixture of calsium soap and amide of saturaded fatty acid) 4g, 가교제(F40K-SP2: 1,3-bis(tert-butylperoxyisopropyl)benzene) 6g을 준비하여 120℃ 정도의 오픈 롤에서 혼련시킨 후, 170℃ 온도의 프레스에서 20분간 성형한다. 이 후, 100℃ 이하의 온수에서 8시간 정도 성형된 시편을 수가교시킨 후 물성 측정용 시편을 제조하고 상기 고분자 조성물을 이용하여 절연 전선을 제조하였다. 이때, 상기 전선의 절연재료 두께는 0.5 내지 5mm로 하였다.30 g of ethylene vinyl acetate (EVA), 35 g of ethylene methyl acrylate (EMA), 25 g of linear low density polyethylene (DF 810: polyethylene), 10 g of maleic anhydride ethylene vinyl acetate (FUS N493: ethylene octane co-polymer), silane compound coating 150 g of treated magnesium hydroxide (TAJIMA M: magnesium dihydroxide coated silane), 5 g of primary antioxidant (ZNO: zinc oxide), 2nd antioxidant (ANT-1010: tetrakis (methylene-3- (3, 5-di-tert-butyl-4-hydroxylphenyl) propionate) methane) 1g, 1g primary weathering inhibitor (MTI: mercaptobenzo tri-imidazole) out of 2 weathering inhibitors, 1g secondary weathering inhibitor (S / A: stearic acid) , 2g of extrusion process improver (AM-CP: oleamide), 4g of crosslinking aid (WB-16: mixture of calsium soap and amide of saturaded fatty acid), crosslinking agent (F40K-SP2: 1,3-bis (tert-butylperoxyisopropyl) benzene ) 6g was prepared and kneaded in an open roll of about 120 ° C, and then molded for 20 minutes in a press at 170 ° C. do. Subsequently, after cross-linking the specimen molded in hot water at 100 ° C. or less for about 8 hours, a specimen for measuring physical properties was prepared, and an insulated wire was manufactured using the polymer composition. At this time, the thickness of the insulating material of the wire was 0.5 to 5mm.
본 발명에 따른 조성물로 제조된 절연재로 피복된 전선의 기술적 효과를 평가하기 위해 제조된 절연전선은 도체로 이루어진 중심코어부 및 중심코어부를 감싸도록 절연재가 피복된 구조로 이루어진다. 상기 피복 절연재는 전술한 상기 조성물을 이용하여 제조하였다.
The insulated wire manufactured to evaluate the technical effect of the wire coated with the insulating material made of the composition according to the present invention has a structure in which the insulating material is coated to surround the center core part and the center core part made of a conductor. The coating insulation was prepared using the composition described above.
실시예 2 내지 10Examples 2 to 10
상기 조성비율을 이용하여 실시예 1과 같이 제조하였다.
It was prepared as in Example 1 using the composition ratio.
본 발명에 따른 실시예 경우 재료의 상온 체적저항을 측정한 결과 본 발명의 요구치인 1×1015 Ωㆍ㎝ 이상의 값을 나타내었다. 또한 전선 상태에서 IEC 332-3 Cat.C의 난연성을 만족하였을 뿐만 아니라, 재료상에서 기본적으로 요구되는 산소지수가 30% 이상을 나타내었다. 기본적으로 요구되는 상온에서의 기계적 특성과 가열 후의 물리적 특성 및 핫세트도 만족할 만한 수준이었다. In the case of the embodiment according to the present invention, the measurement of the room temperature volume resistance of the material showed a value of 1 × 10 15 Ω · cm or more, which is a requirement of the present invention. In addition to satisfying the flame retardancy of IEC 332-3 Cat.C in the wire state, the basic oxygen required for the material showed more than 30%. Basically required mechanical properties at room temperature, physical properties after heating and hot set were also satisfactory.
또한, 종래의 평가에서는 적용하지 않았던 저발연 특성을 평가한 결과 IEC 601034에 준하는 연기밀도 80% 이상과 NES 711에 준하는 10 이하의 연기지수 특성을 만족하였으며, 종래의 전선과는 차별되게 최근 부각되고 있는 연소에 의해 환경과 인체 및 설비에 영향을 미치는 독성가스의 배출 정도를 측정한 결과 NES 713에 준하는 1 이하의 독성지수 및 IEC 60754-1에 준하는 0.5% 이하의 할로겐 함량 특성이 우수하게 나타남을 알 수 있었다. In addition, as a result of evaluating the low smoke characteristics that were not applied in the conventional evaluation, it satisfies the smoke index characteristic of 80% or more according to IEC 601034 and the smoke index characteristic of 10 or less according to NES 711. The emission level of toxic gases affecting the environment, human body and equipment by the combustion of the combustion system showed that the toxicity index below 1 according to NES 713 and halogen content below 0.5% according to IEC 60754-1 were excellent. Could know.
본 발명에 따른 실시예에서 표면 처리된 금속수산화물 및 무기첨가제를 사용함에 따라 전선의 백화 현상이 현저히 저하되었으며, 재료의 압출 가공성이 매우 양호하여 표면 외관이 매끄러울 뿐만 아니라 압출 가공 중에 스코치 현상이 발생하지 않았다.In the embodiment according to the present invention, the surface whitening phenomenon was significantly lowered by using the surface-treated metal hydroxide and inorganic additive, and the extrusion processability of the material was very good, so that the surface appearance was smooth and the scorch phenomenon occurred during the extrusion process. Did not do it.
비교예에서는 불포화 유기 실란이 결합된 비닐 아세테이트의 함량이 28%인In the comparative example, the vinyl acetate content of the unsaturated organic silane bound was 28%.
에틸렌-비닐 아세테이트 공중합체 수지와 불포화 유기 실란이 결합된 저밀도 폴리에틸렌 수지의 블렌드를 기본수지로 사용하고, 표면 처리하지 않은 수산화 마그네슘을 및 난연 조제를 첨가하였는데, 비닐 아세테이트의 함량이 28중량%인 에틸렌 비닐 아세테이트와 저밀도 폴리에틸렌에 표면 처리하지 않은 금속수산화물을 적용함에 따라 상온 신장율이 저하되고 재료의 체적저항율이 낮게 나타났다. 또한, 체적저항율을 향상시키기 위해 적용한 저밀도 폴리에틸렌으로 인해 산소지수가 요구치를 만족하지 못하였을 뿐만 아니라 컴파운드 및 압출 가공중에 실란과 금속수산화물 표면의 하이드록시기가 반응하여 스코치가 발생하였다.A blend of an ethylene-vinyl acetate copolymer resin and a low density polyethylene resin combined with an unsaturated organic silane was used as the base resin, and untreated magnesium hydroxide and a flame retardant aid were added. The application of untreated metal hydroxides to vinyl acetate and low density polyethylene resulted in lower room temperature elongation and lower volume resistivity of the material. In addition, the low-density polyethylene applied to improve the volume resistivity not only did not meet the oxygen index requirement but also caused scorch due to the reaction of hydroxy groups on the surface of the silane and the metal hydroxide during compounding and extrusion.
한편 비교예에서 동일한 복합 수지와 난연화 구조에 난연성을 향상시키기 위해 난연 조제로 적인을 첨가한 결과 절연 재료를 적용한 전선은 연기밀도와 연기지수 그리고 독성 지수를 만족하지 못하였다. 따라서 본 발명과 같이 저발연 저독성 특성을 갖는 수가교 절연 전선 특성을 나타낼 수 없으며, 불포화 유기 실란이 결합된 비닐 아세테이트의 함량이 28%인 에틸렌 비닐 아세테이트 공중합체 수지에 스테아린산으로 표면 처리한 수산화 마그네슘을 사용한 경우 컴파운드 밀 압출 가공성은 향상되었으나 상온 신장율이 높음에 따라 가열 후 신장 잔율이 저하되는 현상이 발생하였는데 이로 인해 불포화 유기 실란의 결합도를 높이기 위해 실란 함량과 과산화물의 양을 조절할 필요성이 대두되었으며 상온 체적저항율과 전선의 절연저항이 현저히 저하되었다. On the other hand, as a result of adding red as a flame retardant aid to the same composite resin and flame retardant structure in the comparative example to improve the flame retardancy, the wire applied insulation material did not satisfy the smoke density, smoke index and toxicity index. Therefore, as shown in the present invention, the crosslinked insulated wire property having low smoke and low toxicity properties cannot be exhibited, and magnesium hydroxide surface-treated with stearic acid on ethylene vinyl acetate copolymer resin containing 28% of vinyl acetate bonded with unsaturated organic silane. When used, the compound mill extrusion processability was improved, but as the room temperature elongation rate was high, the elongation residual rate decreased after heating. As a result, it was necessary to adjust the silane content and the amount of peroxide to increase the bondability of unsaturated organic silanes. The volume resistivity and the insulation resistance of the wire were significantly reduced.
비교예 경우 불포화 유기 실란이 결합된 비닐 아세테이트의 함량이 28%인 에틸렌 비닐 아세테이트 공중합체 수지에 표면 처리하지 않은 수산화 알루미늄을 사용하였다. 또한, 수산화 알루미늄 단독으로는 산소지수를 만족하기 어려워 난연성을 향상시키기 위하여 적인을 첨가하였다. 기본적으로 전기적 특성이 우수한 저밀도 폴리에틸렌을 사용함으로써 체적저항과 절연 저항에 대한 특성을 만족하였으나 난연성을 위해 과량 첨가된 수산화 알루미늄과 적인으로 인하여 기계적 특성이 저In the comparative example, aluminum hydroxide, which was not surface treated, was used for the ethylene vinyl acetate copolymer resin having a content of 28% vinyl acetate bonded to an unsaturated organic silane. In addition, the aluminum hydroxide alone is difficult to satisfy the oxygen index, so that the addition of red in order to improve the flame retardancy. Basically, low-density polyethylene with excellent electrical properties is used to satisfy the characteristics of volume and insulation resistance, but the mechanical properties are low due to excessive addition of aluminum hydroxide and redness for flame retardancy.
하되었으며, 연기지수 및 독성지수가 높게 나타났다. The smoke index and toxicity index were high.
또한, 분해 온도가 낮은 비표면 처리된 수산화 알루미늄으로 인하여 컴파운드 및 압출 가공 중에 실란의 가교에 의한 스코치와 분해가 발생하였다.In addition, due to the low surface temperature of the non-surfaced aluminum hydroxide, scorch and decomposition due to crosslinking of the silane occurred during compounding and extrusion.
비교예의 특성 평가결과로부터 알 수 있듯이 전기적 특성을 향상시키고 백화 현상을 저하시키기 위해 복합수지를 적절히 혼용할 경우 압출 가공 특성과 난연성 및 저발연 특성이 상충되는 현상이 발생한다. 무기 첨가제의 표면이 특정한 유기물로 처리되지 않을 경우 압출 가공성과 전기적 특성을 근본적으로 개선하기는 어렵다.
As can be seen from the characteristics evaluation results of the comparative example, when the composite resin is properly mixed in order to improve the electrical properties and reduce the whitening phenomenon, the phenomenon of the extrusion processing property and the flame retardancy and the low smoke property occurs. If the surface of the inorganic additive is not treated with a specific organic material, it is difficult to fundamentally improve the extrudability and electrical properties.
Claims (2)
Insulated wire, made of the composition of claim 1.
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