KR102354034B1 - Co-extrusion wood plastic composites with excellent flame resistance and slip resistance - Google Patents

Co-extrusion wood plastic composites with excellent flame resistance and slip resistance Download PDF

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KR102354034B1
KR102354034B1 KR1020210042581A KR20210042581A KR102354034B1 KR 102354034 B1 KR102354034 B1 KR 102354034B1 KR 1020210042581 A KR1020210042581 A KR 1020210042581A KR 20210042581 A KR20210042581 A KR 20210042581A KR 102354034 B1 KR102354034 B1 KR 102354034B1
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weight
parts
slip resistance
inner layer
double
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KR1020210042581A
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김수정
이원재
최원규
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(주)에코로
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/28—Moulding or pressing characterised by using extrusion presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/20—Carboxylic acid amides
    • 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
    • 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
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • 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
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/08—Copolymers of styrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/02172—Floor elements with an anti-skid main surface, other than with grooves

Abstract

The present invention provides a co-extrusion wood plastic composite deck material with excellent flame resistance and slip resistance, which includes an inner layer and a surficial layer, wherein the inner layer includes 10 to 200 parts by weight of wood flour, 1 to 50 parts by weight of a filler, and 1 to 10 parts by weight of a binder based on 100 parts by weight of an olefin-based resin; and the surficial layer includes 1 to 100 parts by weight of ethylene-based rubber, 1 to 20 parts by weight of wood flour, 10-30 parts by weight of an inorganic flame retardant mixture, 1 to 20 parts by weight of a filler, 0.1 to 5.0 parts by weight of a crosslinking agent, 1 to 15 parts by weight of an adhesive improving agent, 1-5 parts by weight of a UV stabilizer and 1-5 parts by weight of a binder based on 100 parts by weight of the olefin-based resin. In the co-extrusion wood plastic composite deck material according to the present invention, most of the existing general synthetic wood materials are used for the inner layer, and a material with excellent flame resistance and slip resistance is applied only to the surficial layer, so that the flame retardancy and excellent slip resistance are exhibited on the surface, and the cost is reduced by 20% or more compared to the existing deck materials with slip resistance.

Description

난연성 및 미끄럼 저항성이 우수한 이중압출 합성목재 데크재{Co-extrusion wood plastic composites with excellent flame resistance and slip resistance}Co-extrusion wood plastic composites with excellent flame resistance and slip resistance}

본 발명은 이중 압출로 제조되는 난연성 및 미끄럼 저항성이 우수한 합성목재 데크재에 관한 것으로, 더욱 상세하게는 데크재 내부층은 폴리올레핀계 수지와 목분 및 충진제 등 기존의 합성목재 조성으로 제조되나, 표피층은 난연성 및 미끄럼 저항성이 우수한 올레핀계 수지와 Ethylene계 고무, 무기난연제 혼합물을 혼합 적용한 이중압출 합성목재 데크재에 관한 것이다.The present invention relates to a synthetic wood deck material with excellent flame retardancy and slip resistance produced by double extrusion, and more specifically, the inner layer of the deck material is made of a polyolefin-based resin, wood powder and filler, etc. It relates to a double-extruded synthetic wood decking material obtained by mixing and applying a mixture of olefin resin, ethylene-based rubber, and inorganic flame retardant with excellent flame retardancy and slip resistance.

최근 높은 강도를 가지면서도 가벼운 토목, 건축자재에 대한 수요가 지속적으로 요구되고 있다. 이에 따라 천연 목재와 유사한 표면 질감 및 무늬를 갖는 목재와 플라스틱을 혼합하여 제조하는 Wood Plastic Composites(이하 WPC라 한다)라는 압출 제품이 각광받고 있다.Recently, there is a continuous demand for light civil engineering and building materials with high strength. Accordingly, extruded products called Wood Plastic Composites (hereinafter referred to as WPC), which are manufactured by mixing wood and plastic having a surface texture and pattern similar to natural wood, are in the spotlight.

상기 WPC의 경우 폴리에틸렌, 폴리프로필렌 등 다양한 열가소성 올레핀계 수지에 목분 및 각종 첨가제를 용융 압출함으로써 주로 제조된다. WPC는 플라스틱의 우수한 가공성과 목재의 수려한 외관, 그리고 기존 목재나 플라스틱 단일 소재의 경우와 대비하여 높은 강도, 저렴한 가격, 적용분야의 다양성 등 여러 장점이 있으며, 최근 야외용 데크 및 펜스 등 다양한 곳에 사용되고 있다.In the case of the WPC, it is mainly manufactured by melt-extruding wood flour and various additives into various thermoplastic olefin resins such as polyethylene and polypropylene. WPC has several advantages such as excellent processability of plastic, beautiful appearance of wood, high strength, low price, and variety of applications compared to the existing wood or plastic single material. .

최근 그 이용이 확산되고 있는 산책로 및 등산로의 데크재는 많은 사람들이 밟고 지나다니기 때문에 난연성 및 미끄럼 사고방지를 위한 설계가 중요하다.Since many people step on deck materials for trails and hiking trails, where their use is spreading recently, it is important to design for flame retardancy and to prevent slipping accidents.

특히, 야외에 설치되는, 산책로 및 등산로의 계단재는 겨울철에 화재에 의한 인명손상이 발생할 수 있는 요소가 많아 화재방지 기능이 무엇보다 중요하기 때문에 이중압출 합성목재의 표면에 화재방지 기능을 부여할 필요성이 요구되었다.In particular, the need to provide a fire prevention function to the surface of double-extruded synthetic wood because the fire prevention function is most important as there are many factors that can cause personal injury due to fire in winter for stairs materials installed outdoors this was requested

또한 산책로 및 등산로의 계단재는 습기가 높거나 비, 눈 등 미끄럼이 발생할 수 있는 요소가 많아 미끄럼 사고방지 기능도 중요하기 때문에 합성 목재의 표면에 요철무늬를 형성시키거나 길이 방향으로 홈을 형성하여 미끄럼 방지 기능을 부여하여 왔다.In addition, since the stairway material of trails and hiking trails is high in moisture or there are many factors that can cause slipping, such as rain and snow, it is important to prevent slipping accidents. It has been given a preventive function.

종래에는 미끄럼 방지를 위해 합성목재의 표면에 요철무늬를 형성시키거나 길이 방향으로 홈을 형성하여 미끄럼 방지 기능을 부여하여 왔으나, 이러한 표면 가공방식은 설치 초기에는 미끄럼 방지 효과가 있으나, 많은 사람들이 밟고 지나다니다 보면 금방 표면이 마모되어 미끄럼 방지기능을 상실하고 마는 문제점을 갖고 있다.Conventionally, to prevent slipping, an anti-slip function has been given by forming an uneven pattern on the surface of the synthetic wood or forming a groove in the longitudinal direction. It has a problem that the surface wears out quickly and loses its anti-slip function.

한국 등록특허 제10-2099148호Korean Patent Registration No. 10-2099148

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로 내부층과 표피층으로 이중 압출되는 합성목재 데크재에 있어서 표피층에만 Ethylene계 고무를 포함하며, 미끄럼 저항성을 극대화하면서도 표피층에 무기난연제 혼합물을 첨가하여 난연성을 부여하고자한다. 내부층과 표피층의 결합력 향상을 위하여 접착성 개선제를 적용함으로써 내부층과 표피층의 박리 강도를 향상시켜, 특히 등산로나 산책로 등에 설치하는 이중압출 합성목재로 내후성이 우수한 야외용 합성목재 데크제를 제공하고자 한다.The present invention is to solve the above problems. In a synthetic wood decking material that is double-extruded into an inner layer and a skin layer, only the skin layer contains ethylene-based rubber, and while maximizing slip resistance, an inorganic flame retardant mixture is added to the skin layer to improve flame retardancy. want to give By applying an adhesive improving agent to improve the bonding strength between the inner layer and the outer layer, the peel strength of the inner layer and the outer layer is improved. In particular, it is a double-extruded synthetic wood installed on hiking trails or walking trails. .

상기와 같은 목적을 달성하기 위하여 본 발명은, 내부층과 표피층으로 구성되고, 내부층은 올레핀계 수지 100 중량부에 대하여 목분 10~100 중량부, 충진제 1~50 중량부 및 결합제 1~10 중량부를 포함하고, 표피층은 올레핀계 수지 100 중량부에 대하여 Ethylene계 고무 1~50 중량부, 목분 1~20 중량부, 무기난연제 혼합물 10~30 중량부, 충진제 1~20 중량부, 가교제 0.1~5.0 중량부, 접착성 개선제 1~15 중량부, 자외선 안정제 1~5 중량부 및 결합제 1~5 중량부를 포함하는 것을 특징으로 하는 난연성과 미끄럼 저항성이 우수한 이중압출 합성목재 데크재를 제공한다.In order to achieve the above object, the present invention is composed of an inner layer and a skin layer, and the inner layer is 10 to 100 parts by weight of wood flour, 1 to 50 parts by weight of a filler, and 1 to 10 parts by weight of a binder based on 100 parts by weight of an olefinic resin. Including parts, the skin layer is 1 to 50 parts by weight of ethylene-based rubber, 1 to 20 parts by weight of wood flour, 10 to 30 parts by weight of an inorganic flame retardant mixture, 1 to 20 parts by weight of a filler, 0.1 to 5.0 parts by weight of a crosslinking agent based on 100 parts by weight of an olefinic resin It provides a double-extruded composite decking material excellent in flame retardancy and slip resistance, characterized in that it contains 1 to 15 parts by weight of an adhesive improving agent, 1 to 5 parts by weight of a UV stabilizer, and 1 to 5 parts by weight of a binder.

상기 Ethylene계 고무로는 대표적으로 EPDM(Ethylene Propylene Dien Monomer), CM(Chlorinated Polyethylene), CSM(Chlorosulfonated Polyethylene), Ethylene Acrylic Elastomer 등이 있다.Examples of the ethylene-based rubber include Ethylene Propylene Dien Monomer (EPDM), Chlorinated Polyethylene (CM), Chlorosulfonated Polyethylene (CSM), and Ethylene Acrylic Elastomer.

상기 Ethylene계 고무를 EPDM(Ethylene Propylene Dien Monomer)을 단독으로 사용하거나, CM(Chlorinated Polyethylene)을 단독으로 사용 하거나, CSM(Chlorsulfonated Polyethylene)을 단독으로 사용하거나, Ethylene Acrylic Elastomer을 단독으로 사용하거나, 또는 EPDM(Ethylene Propylene Dien Monomer)과 CM(chlorinated Polyethylene), CSM(Chlorsulfonated Polyethylene), Ethylene Acrylic Elastomer 중 2종 이상을 병용하여 사용할 수 있으며 무기난연제 혼합물을 10~30 중량부 첨가하는 것을 특징으로 하는 난연성 및 미끄럼 저항성이 우수한 이중압출 합성목재 데크재를 제공한다.For the ethylene-based rubber, EPDM (Ethylene Propylene Dien Monomer) is used alone, CM (Chlorinated Polyethylene) is used alone, CSM (Chlorsulfonated Polyethylene) is used alone, or Ethylene Acrylic Elastomer is used alone, or Two or more of EPDM (Ethylene Propylene Dien Monomer), CM (chlorinated polyethylene), CSM (Chlorsulfonated Polyethylene), and Ethylene Acrylic Elastomer can be used in combination, and 10 to 30 parts by weight of an inorganic flame retardant mixture is added. A double-extruded composite decking material with excellent slip resistance is provided.

상기 내부층은 접착성 개선제를 1~10 중량부 더 포함하는 이중압출 합성목재 데크재를 제공한다. The inner layer provides a double-extrusion composite wood decking material further comprising 1 to 10 parts by weight of an adhesion improving agent.

상기 무기난연제 혼합물은 금속 수산화물 난연제 중 수산화알루미늄, 수산화마그네슘 및 층상 복-수산화물인 Hydrotalcites 중에서 선택된 1종 또는 2종 이상에 질소-인 및 방향족 부분이 포함된 poly(4,4-diaminodiphenyl methane spirocyclic pentaerythritol bisphonate) (PDSPB)와 난연 보조재로 희토류 금속화합물인 Lanthanum Oxide(La2O3)를 70:29:1 중량 비율로 혼합한 혼합물인 것을 특징으로 하는 난연성 이중압출 합성목재 데크재를 제공한다.The inorganic flame retardant mixture is a poly(4,4-diaminodiphenyl methane spirocyclic pentaerythritol bisphonate containing nitrogen-phosphorus and aromatic moieties in one or two or more selected from Hydrotalcites, which is aluminum hydroxide, magnesium hydroxide, and layered double hydroxides among metal hydroxide flame retardants. ) (PDSPB) and a rare earth metal compound Lanthanum Oxide (La 2 O 3 ) as a flame retardant auxiliary material are mixed in a weight ratio of 70:29:1 to provide a flame retardant double extrusion composite wood decking material.

상기 접착성 개선제는 우레탄 디메타크릴레이트 (UDMA), 디펜타에릴트리톨 펜타아크릴레이트 모노포스페이트(dipentaerythritol pentaacrylate monophosphate, PENTA), 2-하이드록시에틸 메타크릴레이트(2-hydroxyethyl methacrylate, HEMA) 중에서 선택되는 어느 하나인 난연성 및 미끄럼 저항성이 우수한 이중압출 합성목재 데크재를 제공한다.The adhesion improving agent is urethane dimethacrylate (UDMA), dipentaerythritol pentaacrylate monophosphate (PENTA), 2-hydroxyethyl methacrylate (2-hydroxyethyl methacrylate, HEMA) in It provides a double-extruded composite wood decking material having excellent flame retardancy and slip resistance, which is any one selected.

상기 표피층은 두께가 1.0~1.5 mm인 것을 특징으로 하는 난연성 및 미끄럼 저항성이 우수한 이중압출 합성목재 데크재를 제공한다.The skin layer provides a double-extrusion composite wood deck material having excellent flame retardancy and slip resistance, characterized in that the thickness is 1.0 ~ 1.5 mm.

본 발명에 따른 이중압출 합성목재 데크재는 내부층에는 기존의 일반 합성목재 소재를 대부분 사용하면서 표피층에만 난연성 및 미끄럼 저항성이 우수한 Ethylene계 고무와 무기난연제 혼합물을 첨가하여 적용함으로써 표면층에서 난연성 및 우수한 미끄럼 저항성이 발휘된다. The double extruded synthetic wood decking material according to the present invention uses most of the existing general synthetic wood materials for the inner layer, and adds an ethylene-based rubber and inorganic flame retardant mixture with excellent flame retardancy and slip resistance only to the outer layer. this is performed

한편, 내부층과 표피층의 조성을 달리하면서도, 접착성 개선제를 적용함으로써 내부층과 표피층의 박리를 방지하여 우수한 내후성을 가지는 합성목재 데크재를 제조할 수 있다. On the other hand, while the composition of the inner layer and the skin layer are different, by applying the adhesion improving agent, it is possible to prevent peeling of the inner layer and the skin layer, thereby manufacturing a composite wood decking material having excellent weather resistance.

또한, 내부층에 기존의 합성목재의 조성에 필요한 성분을 그대로 함유함으로써, 기존의 합성목재 데크 대비 물리적 특성이 동등하면서 표피층에 첨가되는 다양한 기능 성분에 따라 우수한 기능성을 발휘할 수 있다.In addition, by containing the components necessary for the composition of the existing synthetic wood as it is in the inner layer, it is possible to exhibit excellent functionality according to the various functional components added to the skin layer while having the same physical properties compared to the existing synthetic wood deck.

도 1은 본 발명에 따른 이중압출 합성목재 데크재의 시작품 형태이다.1 is a prototype of a double-extrusion composite wood deck material according to the present invention.

이하, 실시예 및 실험예를 통해 본 발명을 보다 구체적으로 설명한다. 그러나 이들 예는 본 발명의 이해를 돕기 위한 것일 뿐 어떠한 의미로든 본 발명의 범위가 이들 예로 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail through Examples and Experimental Examples. However, these examples are only for helping the understanding of the present invention, and the scope of the present invention is not limited to these examples in any sense.

본 발명의 일 실시형태에 따르면, 내부층과 표피층으로 구성되고, 내부층은 올레핀계 수지 100 중량부에 대하여 목분 10~200 중량부, 충진제 1~50 중량부 및 결합제 1~10 중량부를 포함하고, 표피층은 올레핀계 수지 100 중량부에 대하여 Ethylene계 고무 1~100 중량부, 목분 1~20 중량부, 무기난연제 혼합물 10~30 중량부, 충진제 1~20 중량부, 가교제 0.1 ~5.0 중량부, 접착성 개선제 1~15 중량부, 자외선 안정제 1~5 중량부 및 결합제 1~5 중량부를 포함하는 것을 특징으로 하는 난연성 및 미끄럼 저항성이 우수한 이중압출 합성목재 데크재를 제공한다. According to an embodiment of the present invention, it is composed of an inner layer and a skin layer, and the inner layer includes 10 to 200 parts by weight of wood flour, 1 to 50 parts by weight of a filler, and 1 to 10 parts by weight of a binder based on 100 parts by weight of the olefin-based resin, and , the skin layer is 1 to 100 parts by weight of ethylene-based rubber, 1 to 20 parts by weight of wood flour, 10 to 30 parts by weight of an inorganic flame retardant mixture, 1 to 20 parts by weight of a filler, 0.1 to 5.0 parts by weight of a crosslinking agent, based on 100 parts by weight of the olefinic resin; It provides a double-extruded composite decking material having excellent flame retardancy and slip resistance, characterized in that it contains 1 to 15 parts by weight of an adhesion improving agent, 1 to 5 parts by weight of a UV stabilizer, and 1 to 5 parts by weight of a binder.

먼저, 본 발명에 따른 난연성 및 미끄럼 저항성이 우수한 이중압출 합성목재 데크재의 조성물에 대해 상세히 살펴보면 하기와 같다.First, a detailed look at the composition of the double-extruded synthetic wood decking material having excellent flame retardancy and slip resistance according to the present invention is as follows.

본 발명의 이중압출 합성목재 데크재는 내부층과 표피층으로 구성되며 표피층의 두께는 1.0~1.5 mm의 두께를 가지고 내부층을 전체적으로 감싸는 형태로 이중압출되어 제조된다. The double extrusion composite wood decking material of the present invention is composed of an inner layer and a skin layer, and the skin layer has a thickness of 1.0 to 1.5 mm and is manufactured by double extrusion in a form that surrounds the inner layer as a whole.

내부층은 올레핀계 수지, 목분, 충진제, 결합제가 혼합되어 형성된 조성물로 제조되고, 접착성 개선제를 더 포함할 수 있다. The inner layer is made of a composition formed by mixing an olefin-based resin, wood powder, a filler, and a binder, and may further include an adhesion improving agent.

내부층의 올레핀계 수지는 폴리프로필렌(polypropylene, PP)과 폴리에틸렌(polyethylene, PE) 및 이들의 공중합체 또는 이들의 혼합물일 수 있으며, 바람직하게는 폴리프로필렌(PP) 또는 고밀도폴리에틸렌(HDPE), 저밀도폴리에틸렌(LDPE) 중에서 선택되는 수지를 혼합하여 사용할 수 있다. 이러한 올레핀계 수지는 제조되는 데크재가 강성을 가지도록 하고, 선팽창률을 작게 하며 내후성을 가지도록 한다. The olefin-based resin of the inner layer may be polypropylene (PP) and polyethylene (PE), a copolymer thereof, or a mixture thereof, preferably polypropylene (PP) or high-density polyethylene (HDPE), low density A resin selected from polyethylene (LDPE) may be mixed and used. Such an olefin-based resin makes the deck material to be manufactured to have rigidity, to reduce the coefficient of linear expansion and to have weather resistance.

상기 내부층에는 목분이 포함되는데 목분은 유기 필러의 하나로, 목분(wood flour), 목펠릿(wood pellet), 목섬유(wood fiber) 또는 지분일 수 있으며, 경우에 따라서는 2가지 이상을 혼합하여 사용할 수 있다. 상기 목분은 내부층의 올레핀계 수지 100 중량부에 대하여 10~200 중량부를 포함한다. The inner layer includes wood flour, and wood flour is one of organic fillers, and may be wood flour, wood pellet, wood fiber, or stock, and in some cases, two or more may be mixed and used. can The wood powder includes 10 to 200 parts by weight based on 100 parts by weight of the olefin-based resin of the inner layer.

상기 충진제는 탈크, 탄산칼슘, 월라스토나이트, 카오리나이트, 활석 또는 운모일 수 있으며, 바람직하게는 탈크, 탄산칼슘일 수 있으며, 올레핀계 수지 100중량부에 대하여 1~50 중량부를 포함한다. 충진제는 기계적 강도 및 치수 안정성 등의 개선을 위해서 사용된다.The filler may be talc, calcium carbonate, wollastonite, kaolinite, talc or mica, preferably talc or calcium carbonate, and includes 1 to 50 parts by weight based on 100 parts by weight of the olefinic resin. Fillers are used to improve mechanical strength and dimensional stability.

상기 결합제는 실란 수지 또는 무수 말레인산 변성 수지일 수 있으며, 바람직하게는 무수 말레인산 변성 수지를 사용할 수 있다. 상기 결합제는 다량 사용되는 유기 필러로 인한 제품의 강도 저하를 방지하고 천연 목재 수준의 탄성과 강도를 부여하기 위하여 사용된다. 결합제는 올레핀계 수지 100 중량부에 대하여 1~10 중량부가 적용된다. The binder may be a silane resin or a maleic anhydride-modified resin, and preferably a maleic anhydride-modified resin. The binder is used to prevent a decrease in strength of a product due to an organic filler used in a large amount and to impart elasticity and strength to the level of natural wood. 1 to 10 parts by weight of the binder is applied based on 100 parts by weight of the olefin-based resin.

상기 표피층은 올레핀계 수지, Ethylene계 고무, 목분, 무기난연제 혼합물, 충진제, 가교제, 접착성 개선제, 자외선 안정제, 결합제를 포함하여 구성된다. The skin layer is configured to include an olefin-based resin, an ethylene-based rubber, wood powder, an inorganic flame retardant mixture, a filler, a crosslinking agent, an adhesion improver, a UV stabilizer, and a binder.

표피층의 올레핀계 수지는 내부층의 올레핀계 수지와 동일한 종류의 수지가 적용될 수 있으며, 표피층에 요구되는 기능에 따라 다른 올레핀계 수지가 적용될 수도 있다.For the olefin-based resin of the skin layer, the same type of resin as the olefin-based resin of the inner layer may be applied, and a different olefin-based resin may be applied according to a function required for the skin layer.

표피층의 목분은 내부층에서 설명한 바와 같다. 구체적으로는 목분(wood flour), 목펠릿(wood pellet), 목섬유(wood fiber) 또는 지분일 수 있으며, 경우에 따라서는 2가지 이상을 혼합하여 사용할 수 있다. 그 사용 함량은 표피층에 적용되는 올레핀계 수지 100 중량부에 대하여 1~20 중량부이다. 표피층의 목분의 함량은 데크재 표면의 자연 질감과 강도 등을 도모하기 위한 것으로, 목분의 함량이 1중량부 미만이면 자연 질감 등이 미미하고, 20 중량부를 초과하는 경우에는 표피층의 결합력이 약해져 표피층의 표면 특성이 저하될 수 있다.The wood powder of the epidermis layer is the same as described for the inner layer. Specifically, it may be wood flour, wood pellet, wood fiber, or stock, and in some cases, two or more may be mixed and used. The content used is 1 to 20 parts by weight based on 100 parts by weight of the olefin-based resin applied to the skin layer. The content of wood powder in the epidermis layer is to promote the natural texture and strength of the surface of the deck material. surface properties may be deteriorated.

표피층의 무기난연제는 많은 종류가 있지만 본 발명에서는 수산화마그네슘, 수산화알루미늄, 멜라민시아네이트(MC), 암모늄폴리포스페이트(APP), 멜라민폴리포스페이트(MPP), 또는 층상 복-수산화물(Layered Double Hydroxide, LDH)인 Hydrotalcites [Mg6Al2CO3(OH)16·4H2O], micronized silicate, 고분자 난연제인 poly sulfonyl diphenylene thiophene phosphonate(PSTPP), Melamine Cyanuric Acid 염, 질소-인 및 방향족 부분이 포함된 poly(4,4-diaminodiphenyl methane spirocyclic pentaerythritol bisphonate) (PDSPB)일 수 있으며, 또한 난연성 상승 효과를 주기 위하여 난연 보조재가 추가될 수 있으며, 상기 난연 보조재로서는 화재시 표면층에 탄화층인 숯분(char) 형성이 빠르게 진행되는 AOM(Ammonium OctaMolybdate) 또는 주석 산화물인 Zinc Stannnate (ZnSnO3), 구리(II), 코발트(II), 니켈(II)의 금속 착화물 또는 Lanthanum Oxide(La2O3), Yttrium Oxide(Y2O3) 등 희토류 금속 화합물일 수 있으며, 바람직하게는 금속 수산화물 난연제 중 수산화알루미늄, 수산화마그네슘, 층상 복-수산화물인 Hydrotalcites 중에서 1종 또는 2종 이상에 질소-인 및 방향족 부분이 포함된 poly(4,4-diaminodiphenyl methane spirocyclic pentaerythritol bisphonate) (PDSPB)와 난연보조재로 희토류 금속화합물인 Lanthnum Oxide(La2O3)를 70:29:1 중량 비율로 혼합한 무기난연제 혼합물을 올레핀계 수지 100 중량부에 대하여 10~30 중량부를 포함한다.Although there are many types of inorganic flame retardants for the epidermal layer, in the present invention, magnesium hydroxide, aluminum hydroxide, melamine cyanate (MC), ammonium polyphosphate (APP), melamine polyphosphate (MPP), or layered double hydroxide (LDH) ), Hydrotalcites [Mg 6 Al 2 CO 3 (OH) 16 4H 2 O], micronized silicate, polymer flame retardant poly sulfonyl diphenylene thiophene phosphonate (PSTPP), Melamine Cyanuric Acid salt, nitrogen-phosphorus and poly containing aromatic moieties (4,4-diaminodiphenyl methane spirocyclic pentaerythritol bisphonate) (PDSPB) may be, and a flame retardant auxiliary material may be added to give a synergistic flame retardant effect, and as the flame retardant auxiliary material, the formation of char, which is a carbonized layer on the surface layer in case of fire, is Metal complexes of fast-acting Ammonium OctaMolybdate (AOM) or tin oxide, Zinc Stannnate (ZnSnO 3 ), Copper(II), Cobalt(II), Nickel(II) or Lanthanum Oxide (La 2 O 3 ), Yttrium Oxide ( Y 2 O 3 ) may be a rare earth metal compound, and preferably one or two or more of aluminum hydroxide, magnesium hydroxide, and hydrotalcites, which are layered double hydroxides among metal hydroxide flame retardants, poly containing nitrogen-phosphorus and aromatic moieties. (4,4-diaminodiphenyl methane spirocyclic pentaerythritol bisphonate) (PDSPB) and Lanthnum Oxide (La 2 O 3 ), a rare earth metal compound as a flame retardant auxiliary, were mixed in a 70:29:1 weight ratio. It contains 10 to 30 parts by weight based on parts.

무기난연제 혼합물 및 난연 보조재는 표피층에 난연성을 부여하기 위해서 사용된다. The inorganic flame retardant mixture and flame retardant auxiliary material are used to impart flame retardancy to the skin layer.

표피층의 난연성을 더욱 향상시키기 위하여, 필요에 따라, Oxi-PAN (Oxidized PolyAcryloNitrile) 섬유와 폴리페닐렌설파이드 (Polyphenylene Sulfide) 섬유가 혼합된 혼합 섬유를 더 포함할 수 있다. In order to further improve the flame retardancy of the epidermis layer, if necessary, Oxi-PAN (Oxidized PolyAcryloNitrile) fiber and polyphenylene sulfide (Polyphenylene Sulfide) fiber may further include a mixed fiber mixed.

폴리페닐렌설파이드 (Polyphenylene Sulfide) 섬유는 난연 성능이 우수한 섬유로서, 본 발명의 일 실시형태에서는 상기 표피층이 난연 섬유로서 Oxi-PAN (Oxidized PolyAcryloNitrile) 섬유와 폴리페닐렌설파이드 (Polyphenylene Sulfide) 섬유가 혼합된 혼합 섬유를 더 포함함으로써, 난연 효과가 보다 우수한 성능 구현이 가능하다.Polyphenylene sulfide (Polyphenylene Sulfide) fiber is a fiber with excellent flame retardant performance, and in one embodiment of the present invention, the outer layer is a flame retardant fiber, Oxi-PAN (Oxidized PolyAcryloNitrile) fiber and polyphenylene sulfide (Polyphenylene Sulfide) fiber are mixed By further including the mixed fiber, it is possible to realize better performance with a flame retardant effect.

상기 Oxi-PAN (Oxidized PolyAcryloNitrile) 섬유와 폴리페닐렌설파이드 (Polyphenylene Sulfide) 섬유의 혼합 섬유 제조는 일반적인 방법에 의해 제조될 수 있으며, 예를 들어 상기 Oxi-PAN (Oxidized PolyAcryloNitrile) 섬유와 폴리페닐렌설파이드 (Polyphenylene Sulfide) 섬유를 롤러 등에 통과시키면서 혼합하여 제조할 수 있다. The Oxi-PAN (Oxidized PolyAcryloNitrile) fiber and the polyphenylene sulfide (Polyphenylene Sulfide) fiber mixed fiber can be prepared by a general method, for example, the Oxi-PAN (Oxidized PolyAcryloNitrile) fiber and polyphenylene sulfide fiber (Polyphenylene Sulfide) It can be produced by mixing the fiber while passing it through a roller.

상기 Oxi-PAN (Oxidized PolyAcryloNitrile) 섬유와 폴리페닐렌설파이드 (Polyphenylene Sulfide) 섬유의 혼합 섬유는 1:1 내지 1:2 부피 비율로 혼합된 형태일 수 있으며, 상기 혼합 섬유는 표피층 전체 대비 3.0 내지 6.0 vol%로 포함될 수 있다.The mixed fiber of the Oxi-PAN (Oxidized PolyAcryloNitrile) fiber and the polyphenylene sulfide fiber may be in a mixed form in a volume ratio of 1:1 to 1:2, and the mixed fiber is 3.0 to 6.0 compared to the entire epidermal layer It can be included as vol%.

상기 혼합 섬유의 함량이 표피층 전체 대비 3.0 vol% 미만의 경우에는 난연 성능 향상 효과가 미비할 수 있으며, 6.0 vol% 초과의 경우에는 재료비로 인한 경제성이 떨어질 수 있으며, 과다한 함량으로 접착 강도가 저하될 수 있다. If the content of the mixed fiber is less than 3.0 vol% of the entire epidermal layer, the effect of improving flame retardancy may be insignificant, and if it exceeds 6.0 vol%, economic feasibility may be reduced due to material cost, and the adhesive strength may be lowered due to excessive content can

상기 표피층의 충진제는 내부층과 동일하게 탈크, 탄산칼슘, 월라스토나이트, 카오리나이트, 활석 또는 운모일 수 있으며, 바람직하게는 탈크, 탄산칼슘일 수 있으며, 표피층의 올레핀계 수지 100 중량부에 대하여 1~20 중량부를 포함한다.The filler of the epidermis layer may be talc, calcium carbonate, wollastonite, kaolinite, talc or mica, preferably talc or calcium carbonate, as in the inner layer, with respect to 100 parts by weight of the olefinic resin of the epidermis layer. 1 to 20 parts by weight.

상기 표피층은 가교제를 올레핀계 수지 100 중량부에 대하여 0.1~5.0 중량부 포함한다. 상기 가교제는 디큐밀퍼옥사이드(Dicumyl peroxide) 또는 벤조일퍼옥사이드(Benzoyl peroxide)가 사용되며, 가교제는 내열성을 향상시키기 위한 것으로 가교제의 함량이 0.1 중량부 미만일 때에는 가교도가 떨어지고, 가교제의 함량이 5.0 중량부를 초과하는 경우에는 충분한 가교가 이루어지지 않게 되어 작업시간 조절이 어려워진다. The skin layer contains 0.1 to 5.0 parts by weight of the crosslinking agent based on 100 parts by weight of the olefin-based resin. The crosslinking agent is dicumyl peroxide (Dicumyl peroxide) or benzoyl peroxide (Benzoyl peroxide) is used, the crosslinking agent is for improving heat resistance, when the content of the crosslinking agent is less than 0.1 parts by weight, the degree of crosslinking is low, the content of the crosslinking agent is 5.0 parts by weight If it is exceeded, sufficient crosslinking is not made, making it difficult to control the working time.

상기 표피층은, 미끄럼 저항성을 향상시키기 위하여 Ethylene계 고무를 1~100 중량부 포함한다. Ethylene계 고무는 EPDM(Ethylene Propylene Dien Monomer), CM(Chlorinated Polyethylene), CSM(Chlorosulphonated Polyethylene), Ethylene Acrylic Elastomer 중에서 선택되는 어느 하나이다. 더욱 바람직하게는 EPDM(Ethylene Propylene Dien Monomer)과 CM(chlorinated Polyethylene)을 각각 단독 또는 병용하여 적용하는 것이 가장 바람직하다. The skin layer contains 1-100 parts by weight of ethylene-based rubber to improve slip resistance. Ethylene-based rubber is any one selected from EPDM (Ethylene Propylene Dien Monomer), CM (Chlorinated Polyethylene), CSM (Chlorosulphonated Polyethylene), and Ethylene Acrylic Elastomer. More preferably, EPDM (Ethylene Propylene Dien Monomer) and CM (chlorinated polyethylene) are most preferably applied alone or in combination.

대표적인 Ethylene계 고무 제조사로는 국내의 금호폴리켐, 해외는 Du Pont, Dow 등에서 생산되고 있다. Ethylene계 고무를 표피층에 적용함으로써 내열성, 내구성 및 고마찰 특성을 확보할 수 있으므로, 제조되는 데크재의 난연성 및 미끄럼 방지 기능을 나타내게 된다. Representative ethylene-based rubber manufacturers include Kumho Polychem in Korea and Du Pont and Dow in overseas markets. By applying the ethylene-based rubber to the skin layer, heat resistance, durability, and high friction characteristics can be secured, so that the manufactured deck material exhibits flame retardancy and anti-slip functions.

상기 표피층은 접착성 개선제를 표피층의 올레핀계 수지 100 중량부에 대하여 1~10 중량부 포함한다. 접착성 개선제는 내부층과 표피층의 접착력을 향상시켜 접착계면이 용이하게 박리되는 것을 방지하기 위한 것이다. 접착성개선제는 우레탄 디메타크릴레이트 (UDMA), 디펜타에릴트리톨 펜타아크릴레이트 모노포스페이트(dipentaerythritol pentaacrylate monophosphate, PENTA), 2-하이드록시에틸 메타크릴레이트(2-hydroxyethyl methacrylate, HEMA) 중에서 선택되는 어느 하나 이상을 사용한다. The skin layer contains 1 to 10 parts by weight of the adhesive improving agent based on 100 parts by weight of the olefin-based resin of the skin layer. The adhesion improving agent is intended to prevent the adhesive interface from being easily peeled off by improving the adhesion between the inner layer and the skin layer. The adhesion improving agent is selected from urethane dimethacrylate (UDMA), dipentaerythritol pentaacrylate monophosphate (PENTA), and 2-hydroxyethyl methacrylate (HEMA). Use any one or more of

상기 접착성 개선제가 1 중량부 미만으로 적용되면 접착력의 향상 효과가 미미하며, 15 중량부를 초과하게 되면 접착성 향상의 효과가 크게 증가하지 않는다. 이러한 접착성개선제는 내부층의 재질과 표피층의 계면에 작용하여 관능기 사이에 결합력을 작용하여 계면 접합력을 증가시키는 것으로 이해된다.When the adhesion improving agent is applied in an amount of less than 1 part by weight, the effect of improving the adhesion is insignificant, and when it exceeds 15 parts by weight, the effect of improving the adhesion is not significantly increased. It is understood that the adhesion improving agent acts on the interface between the material of the inner layer and the skin layer to increase the interfacial bonding force by acting as a bonding force between the functional groups.

상기 접착성 개선제는 표피층에만 포함될 수 있으나, 상기 내부층에 접착성 개선제가 상기 내부층의 올레핀계 수지 100 중량부에 대하여 1~10 중량부 포함될 수 있다. 이렇게 내부층과 표피층에 동시에 접착성 개선제가 포함되는 경우에 내부층과 표피층의 계면에서 접착성 개선제가 견고하게 결합하게 되므로 박리강도 증진 효과가 크게 나타날 수 있다.The adhesion improving agent may be included only in the epidermis layer, but 1 to 10 parts by weight of the adhesion improving agent may be included in the inner layer based on 100 parts by weight of the olefin-based resin of the inner layer. When the inner layer and the epidermal layer contain the adhesive improving agent at the same time, the adhesive improving agent is strongly bonded at the interface between the inner layer and the epidermal layer, so that the peel strength enhancing effect can be greatly improved.

상기 표피층에 포함되는 자외선 안정제는 살리실레이트계, 벤조페논계, 벤조트리아졸계, 시아노아크릴레이트계, 벤조에이트계, 트리아진계 및 아민계의 자외선 안정제 중의 하나 이상이 사용된다. 자외선 안정제는 자외선(UV)에 의한 열화 방지를 위해 사용되며, 이는 자외선을 흡수 및/또는 차단 등의 기능을 가지는 것으로, 올레핀계 수지 100 중량부에 대하여 1~5 중량부가 적용된다.The UV stabilizer included in the epidermis layer is at least one of salicylate-based, benzophenone-based, benzotriazole-based, cyanoacrylate-based, benzoate-based, triazine-based and amine-based UV stabilizers. The ultraviolet stabilizer is used to prevent deterioration by ultraviolet (UV), which has a function of absorbing and/or blocking ultraviolet rays, and 1 to 5 parts by weight is applied based on 100 parts by weight of the olefin-based resin.

상기 표피층에는 내부층과 유사하게 결합제가 1~5 중량부 포함될 수 있다. 상기 결합제는 올레핀 수지, Ethylene계 고무, 무기난연제 혼합물 및 유기필러로 인한 제품의 강도 저하를 방지하고 천연 목재 수준의 탄성과 강도를 부여하기 위하여 사용된다.Similar to the inner layer, the skin layer may contain 1 to 5 parts by weight of a binder. The binder is used to prevent deterioration of product strength due to olefin resin, ethylene-based rubber, inorganic flame retardant mixture, and organic filler, and to provide elasticity and strength comparable to natural wood.

상기 표피층에는 목재의 느낌을 위하여 안료가 추가될 수 있으며, 그 외에도 윤활제, 항균제, 산화방지제, 노화방지제 등을 더 포함할 수 있으며, 이는 합성목재 데크재의 용도에 따라 선택되는 기능 성분이다.Pigments may be added to the skin layer for the feel of wood, and in addition, a lubricant, an antibacterial agent, an antioxidant, an anti-aging agent, etc. may be further included, which is a functional component selected according to the use of the synthetic wood decking material.

본 발명에 따른 난연성 및 미끄럼 저항성이 우수한 이중압출 합성목재 데크재는 내부층을 구성하는 각 성분을 펠릿 제조설비를 이용하여 펠릿 형태로 제조하고, 이렇게 제조되는 펠릿을 2축 압출기를 이용하여 합성목재 데크재의 내부를 형성하는 내부층을 먼저 성형한다. 이렇게 제조되는 내부층의 표면에 표피층의 각 조성물을 이용하여 표피층을 압출기에서 동시에 이중압출성형(co-extrusion)하여 합성목제 데크재를 제조할 수 있다. 상기 표피층은 도 1에 도시된 바와 같이 내부층의 어느 일측면 하나 이상을 감싸도록 제조된다. 이중압출에 의한 합성목재 데크재의 제조방법은 공지된 장비 및 방법에 따르므로 구체적인 설명을 생략한다. The double-extruded synthetic wood decking material with excellent flame retardancy and slip resistance according to the present invention is manufactured in the form of pellets by using a pellet manufacturing facility for each component constituting the inner layer, and the pellets thus manufactured using a twin-screw extruder are used for composite wood decking. The inner layer forming the inside of the ash is first formed. By using each composition of the skin layer on the surface of the inner layer prepared in this way, the skin layer can be simultaneously extruded in an extruder to manufacture a synthetic wooden decking material. As shown in FIG. 1 , the epidermal layer is manufactured to surround one or more of any one side of the inner layer. Since the manufacturing method of the composite wood deck material by double extrusion follows known equipment and methods, a detailed description thereof will be omitted.

내부층은 합성목재 데크재의 사용 목적 또는 용도에 따라 10 mm ~ 50 mm의 두께를 가지도록 제조될 수 있으며, 표피층은 1.0~1.5 mm의 두께를 가질 수 있으나 이에 의해 한정되는 것은 아니다. The inner layer may be manufactured to have a thickness of 10 mm to 50 mm depending on the purpose or use of the composite wood decking material, and the skin layer may have a thickness of 1.0 to 1.5 mm, but is not limited thereto.

이하, 본 발명에 따른 구체적인 실시예 및 비교예에 대해서 설명한다. 하기의 실시예는 본 발명의 이해를 돕기 위해 예시적으로 제공되는 것일 뿐, 이에 의해 본 발명의 기술적 범위가 한정되는 것은 아니다.Hereinafter, specific examples and comparative examples according to the present invention will be described. The following examples are provided only by way of illustration to help the understanding of the present invention, and the technical scope of the present invention is not limited thereby.

[실시예 1 내지 4][Examples 1 to 4]

하기 [표 1]에서 보인 바와 같은 성분 및 함량으로 내부층을 형성(1차 압출)한 후, 상기 내부층의 전체 표면에 두께 1.2 mm의 표피층을 전면 피복 형성(2차 압출)하여, 도 1에 보인 바와 같은 합성목재 데크재(길이 2.4 m, 폭 140 mm, 두께 22 mm)로 제조하였다. 이 때 하기 [표 1]에 표시된 바와 같이, 각 실시예에 따라 내부층과 표피층을 구성하는 성분 및 함량을 달리하였다.After forming the inner layer (primary extrusion) with the components and contents as shown in [Table 1] below, an epidermal layer having a thickness of 1.2 mm is formed on the entire surface of the inner layer (second extrusion) to form the entire surface (second extrusion), FIG. It was made of a composite wood deck material (length 2.4 m, width 140 mm, thickness 22 mm) as shown in Fig. At this time, as shown in [Table 1] below, the components and contents constituting the inner layer and the epidermal layer were varied according to each Example.

표피층의 무기난연제 혼합물은 실시예 1~4와 같이 15~30 중량부로 조성하여 적용하였다.The inorganic flame retardant mixture of the epidermis layer was formulated and applied in an amount of 15 to 30 parts by weight as in Examples 1-4.

충진제는 탈크, 가교제는 벤조일퍼옥시드(benzoyl peroxide), 자외선안정제는 벤조트리아졸, 접착성 개선제는 우레탄 디메타크릴레이트(UDMA), 결합제는 무수 말레인산 변성 수지를 표 1에 따른 함량으로 적용하였다.The filler was talc, the crosslinking agent was benzoyl peroxide, the UV stabilizer was benzotriazole, the adhesion improving agent was urethane dimethacrylate (UDMA), and the binder was maleic anhydride-modified resin in an amount according to Table 1.

[비교예][Comparative example]

통상과 같은 방법으로 합성목재 데크재를 제조하였으며, 표피층에 무기난연제 혼합물 및 접착성 개선제를 사용하지 않은것 이외에는 실시예 1과 동일하다.Synthetic wood decking was prepared in the same manner as usual, and it was the same as in Example 1, except that an inorganic flame retardant mixture and an adhesion improving agent were not used in the skin layer.

구분division 성분ingredient 실시예1
(중량부)Example 1
(parts by weight) 실시예2
(중량부)Example 2
(parts by weight) 실시예3
(중량부)Example 3
(parts by weight) 실시예4
(중량부)Example 4
(parts by weight) 비교예
(중량부)comparative example
(parts by weight)


표피층


epidermal layer PPpp 3030 3030 3030 3030 3030 PEPE 7070 7070 7070 7070 7070 EPDMEPDM 4040 4040 4040 4040 4040 목분wood flour 1010 1010 1010 1010 1010 난연제
혼합물flame retardant
mixture 3030 2525 2020 1515 00 충진제
(탈크)filler
(talc) 1010 1010 1010 1010 1010 가교제crosslinking agent 0.50.5 0.50.5 0.50.5 0.50.5 0.50.5 UV안정제UV Stabilizer 33 33 33 33 33 접착성
개선제adhesive
improver 33 33 33 33 00 결합제binder 33 33 33 33 33


내부층


inner layer PPpp 5050 5050 5050 5050 5050 PEPE 5050 5050 5050 5050 5050 목분wood flour 180180 180180 180180 180180 180180 충진제
(탈크)filler
(talc) 3030 3030 3030 3030 3030 결합제binder 22 22 22 22 22 접착성
개선제adhesive
improver 00 00 00 33 00

이하, 표 2에서는 상기의 방법으로 제조되는 실시예 1 내지 4 및 비교예의 이중압출 합성목재 데크제의 난연성, 내미끄럼성 및 박리력의 측정결과를 나타낸 것이다.Hereinafter, Table 2 shows the measurement results of the flame retardancy, slip resistance and peeling force of the double-extrusion composite wood decking of Examples 1 to 4 and Comparative Examples prepared by the above method.

구분division 실시예1Example 1 실시예2Example 2 실시예3Example 3 실시예4Example 4 비교예comparative example 층간 박리력
(Kgf/15mm)delamination force
(Kgf/15mm) 2.542.54 2.782.78 2.962.96 3.253.25 2.162.16 내미끄럼성
(BPN)slip resistance
(BPN) 3232 3838 4141 4444 2828 난연성
(UL-94)flame retardant
(UL-94) 3.2 mm 두께3.2 mm thick V-0V-0 V-0V-0 V-0V-0 V-1V-1 불합격fail 1.6 mm 두께1.6 mm thick V-0V-0 V-0V-0 V-0V-0 V-1V-1 불합격fail

<측정방법> <Measuring method>

1. 층간 박리력은 접착강도 측정기를 사용하여 약 150 mm/min의 속력으로 상승하는 하중을 가하여, 내부층과 표피층 간의 층간 박리강도(kgf/15mm)를 180도 박리각도에서 측정하였다. 1. The delamination force between the layers was measured using an adhesive strength measuring instrument at a peeling angle of 180 degrees by applying a rising load at a speed of about 150 mm/min.

2. 내미끄럼성(BPN)은 KS F 2375 방법으로 측정하였다. 2. Slip resistance (BPN) was measured by KS F 2375 method.

층간 박리력은 표피층에 접착성 개선재를 동일하게 적용시 무기난연제 혼합물 첨가량이 적을 경우에 높게 나타났으며, 그 함량이 증가할수록 박리력이 떨어졌으며, 내부층과 표피층에 접착성 개선제를 같이 적용하고 무기난연제 혼합물 첨가량이 적을 경우에 실시예 4처럼 가장 높게 나타났다. The interlayer peeling force was high when the amount of the inorganic flame retardant mixture added was small when the same adhesion improving material was applied to the epidermis layer, and the peeling force decreased as the content increased. And when the addition amount of the inorganic flame retardant mixture was small, as in Example 4, it was the highest.

그리고 내미끄럼성의 경우 수치가 높을수록 우수한데, 표피층에 무기난연제 혼합물의 첨가량이 낮으면 내미끄럼성이 우수하게 측정되었다. And in the case of slip resistance, the higher the value, the better. When the amount of the inorganic flame retardant mixture added to the skin layer was low, the slip resistance was excellently measured.

3. 난연성은 표피층만 단독으로 시험하였으며, 본 발명의 실시예 1 내지 4ㅇ와 같이 무기 난연제 혼합물을 첨가한 경우 UL-94 난연성 시험에 적합한 것으로 판명되었다.3. For flame retardancy, only the epidermis layer was tested, and it was found to be suitable for the UL-94 flame retardancy test when an inorganic flame retardant mixture was added as in Examples 1 to 4 of the present invention.

이상에서 기술한 실시예들은 모든 면에서 예시적인 것이며 한정적인 것이 아닌 것으로서 이해되어야 하고, 본 발명의 범위는 상기 상세한 설명보다는 후술하는 청구범위에 의하여 나타나며, 청구범위의 의미 및 범위 그리고 그 등가 개념으로부터 도출되는 모든 변경 또는 변형된 형태가 본 발명의 범위에 포함되는 것으로 해석되어야 한다.The embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the above detailed description, and from the meaning and scope of the claims and their equivalents. All derived changes or modifications should be construed as being included in the scope of the present invention.

Claims (6)

내부층과 표피층으로 구성되고,
내부층은 올레핀계 수지 100 중량부에 대하여 목분 10~200 중량부, 충진제 1~50 중량부 및 결합제 1~10 중량부를 포함하고,
표피층은 올레핀계 수지 100 중량부에 대하여 Ethylene계 고무 1~100 중량부, 목분 1~20 중량부, 무기난연제 혼합물 10~30 중량부, 충진제 1~20 중량부, 가교제 0.1 ~5.0 중량부, 접착성 개선제 1~15 중량부, 자외선 안정제 1~5 중량부 및 결합제 1~5 중량부를 포함하며,
상기 표피층은 Oxi-PAN (Oxidized PolyAcryloNitrile) 섬유와 폴리페닐렌설파이드 (Polyphenylene Sulfide) 섬유가 혼합된 혼합 섬유를 더 포함하고, 상기 혼합 섬유는 상기 표피층 전체 대비 3.0 내지 6.0 vol%로 포함되며, 상기 Oxi-PAN (Oxidized PolyAcryloNitrile) 섬유와 폴리페닐렌설파이드 (Polyphenylene Sulfide) 섬유의 혼합 섬유는 1:1 내지 1:2 부피 비율로 혼합된 형태인 것을 특징으로 하며, 상기 무기난연제 혼합물은 금속 수산화물 난연제 중 수산화알루미늄, 수산화마그네슘 및 층상 복-수산화물인 Hydrotalcites 중에서 선택된 1종 또는 2종 이상에 질소-인 및 방향족 부분이 포함된 poly(4,4-diaminodiphenyl methane spirocyclic pentaerythritol bisphonate) (PDSPB)와 난연 보조재로 희토류 금속화합물인 Lanthanum Oxide(La2O3)를 70:29:1 중량 비율로 혼합한 혼합물인 것을 특징으로 하는 난연성 및 미끄럼 저항성이 우수한 이중압출 합성목재 데크재.It consists of an inner layer and an epidermal layer,
The inner layer contains 10 to 200 parts by weight of wood flour, 1 to 50 parts by weight of a filler, and 1 to 10 parts by weight of a binder based on 100 parts by weight of the olefinic resin,
The skin layer contains 1 to 100 parts by weight of ethylene-based rubber, 1 to 20 parts by weight of wood flour, 10 to 30 parts by weight of an inorganic flame retardant mixture, 1 to 20 parts by weight of a filler, 0.1 to 5.0 parts by weight of a crosslinking agent, based on 100 parts by weight of the olefinic resin. 1 to 15 parts by weight of a property improving agent, 1 to 5 parts by weight of a UV stabilizer, and 1 to 5 parts by weight of a binder,
The epidermal layer further comprises a mixed fiber in which Oxi-PAN (Oxidized PolyAcryloNitrile) fibers and polyphenylene sulfide fibers are mixed, and the mixed fibers are included in 3.0 to 6.0 vol% of the entire epidermal layer, and the Oxi -PAN (Oxidized PolyAcryloNitrile) fiber and polyphenylene sulfide (Polyphenylene Sulfide) fiber mixed fiber is characterized in that it is mixed in a volume ratio of 1:1 to 1:2, and the inorganic flame retardant mixture is hydroxylated in a metal hydroxide flame retardant Poly(4,4-diaminodiphenyl methane spirocyclic pentaerythritol bisphonate) (PDSPB) containing nitrogen-phosphorus and aromatic moieties in one or two or more selected from aluminum, magnesium hydroxide and hydrotalcites, a layered double hydroxide, and a rare earth metal as a flame retardant auxiliary material Double extrusion composite decking material with excellent flame retardancy and slip resistance, characterized in that it is a mixture of the compound Lanthanum Oxide (La 2 O 3 ) in a weight ratio of 70:29:1. 제1항에 있어서,
상기 내부층은 접착성 개선제를 1~10 중량부 더 포함하는 것을 특징으로 하는 난연성 및 미끄럼 저항성이 우수한 이중압출 합성목재 데크재.According to claim 1,
The inner layer is double-extruded composite wood decking material excellent in flame retardancy and slip resistance, characterized in that it further comprises 1 to 10 parts by weight of an adhesion improving agent. 제1항에 있어서,
상기 Ethylene계 고무는 EPDM(Ethylene Propylene Dien Monomer)인 것을 특징으로 하는 난연성 및 미끄럼 저항성이 우수한 이중압출 합성목재 데크재.According to claim 1,
The ethylene-based rubber is EPDM (Ethylene Propylene Dien Monomer) double-extrusion composite wood deck material with excellent flame retardancy and slip resistance, characterized in that. 삭제delete 제1항에 있어서,
상기 접착성 개선제는 우레탄 디메타크릴레이트 (UDMA), 디펜타에릴트리톨 펜타아크릴레이트 모노포스페이트(dipentaerythritol pentaacrylate monophosphate, PENTA), 2-하이드록시에틸 메타크릴레이트(2-hydroxyethyl methacrylate, HEMA) 중에서 선택되는 어느 하나 이상인 것을 특징으로 하는 난연성 및 미끄럼 저항성이 우수한 이중압출 합성목재 데크재.According to claim 1,
The adhesion improving agent is urethane dimethacrylate (UDMA), dipentaerythritol pentaacrylate monophosphate (PENTA), 2-hydroxyethyl methacrylate (2-hydroxyethyl methacrylate, HEMA) Double-extruded composite wood decking with excellent flame retardancy and slip resistance, characterized in that at least one selected. 제1항에 있어서,
상기 표피층의 두께는 1.0~1.5mm 인 것을 특징으로 하는 난연성 및 미끄럼 저항성이 우수한 이중압출 합성목재 데크재.
According to claim 1,
The thickness of the skin layer is a double-extruded composite wood deck material excellent in flame retardancy and slip resistance, characterized in that the thickness is 1.0 ~ 1.5mm.
KR1020210042581A 2021-04-01 2021-04-01 Co-extrusion wood plastic composites with excellent flame resistance and slip resistance KR102354034B1 (en)

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KR20160142596A (en) * 2015-06-03 2016-12-13 (주) 삼정디씨피 Wood polymer composite having multi-layer structure
JP2017503201A (en) * 2013-12-19 2017-01-26 ヒョンダイ モーター カンパニー Sound absorbing and insulating material excellent in moldability and appearance and method for producing the same
KR102099148B1 (en) 2019-10-22 2020-04-09 (주)우드린 Fire-retardant synthetic wood manufacturing method
KR102141518B1 (en) * 2020-04-16 2020-08-06 (주)에코로 Double-extrusion synthetic wood deck panel with excellent slip resistance

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017503201A (en) * 2013-12-19 2017-01-26 ヒョンダイ モーター カンパニー Sound absorbing and insulating material excellent in moldability and appearance and method for producing the same
KR20160142596A (en) * 2015-06-03 2016-12-13 (주) 삼정디씨피 Wood polymer composite having multi-layer structure
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