KR101799588B1 - A eco-friendly ductility composition for injection molding - Google Patents
A eco-friendly ductility composition for injection molding Download PDFInfo
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- 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
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- C08L27/00—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 a halogen; Compositions of derivatives of such polymers
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Abstract
본 발명은 사출이 용이한 연성 친환경 조성물에 관한 것으로, 더욱 상세하게는 EVA(ethylene-vinyl acetate)/PVC(Polyvinyl chloride) 컴파운드 100 중량부에 대하여 친환경 가소제인 DOTP(Dioctyl Terephthalate) 5~15 중량부 및 목분 3~7 중량부를 포함하는 것을 특징으로 하는 사출이 용이한 연성 친환경 조성물에 관한 것이다.
본 발명에 따른 사출이 용이한 연성 친환경 조성물은 친환경 가소제 및 목분을 함유하여 친환경적인 효능이 있으며, 기존의 조성물과 비슷한 점도를 보유하여 사출이 용이한 효능이 있다.The present invention relates to a flexible eco-friendly composition which can be easily injected. More specifically, the present invention relates to an eco-friendly composition which is easily injectable, and more particularly, to an epoxy resin composition comprising 5 to 15 parts by weight of DOTP (Dioctyl Terephthalate) And 3 to 7 parts by weight of wood flour.
The flexible eco-friendly composition according to the present invention has an eco-friendly effect containing an environmentally friendly plasticizer and wood flour, and has a viscosity similar to that of the conventional composition and is easy to inject.
Description
본 발명은 사출이 용이한 연성 친환경 조성물에 관한 것으로, 더욱 상세하게는 EVA(ethylene-vinyl acetate)/PVC(Polyvinyl chloride) 컴파운드 100 중량부에 대하여 친환경 가소제인 DOTP(Dioctyl Terephthalate) 5~15 중량부 및 목분 3~7 중량부를 포함하는 것을 특징으로 하는 사출이 용이한 연성 친환경 조성물에 관한 것이다. The present invention relates to a flexible eco-friendly composition which can be easily injected. More specifically, the present invention relates to an eco-friendly composition which is easily injectable, and more particularly, to an epoxy resin composition comprising 5 to 15 parts by weight of DOTP (Dioctyl Terephthalate) And 3 to 7 parts by weight of wood flour.
본 발명에 따른 사출이 용이한 연성 친환경 조성물은 친환경 가소제 및 목분을 함유하여 친환경적인 효능이 있으며, 기존의 조성물과 비슷한 점도를 보유하여 사출이 용이한 효능이 있다.
The flexible eco-friendly composition according to the present invention has an eco-friendly effect containing an environmentally friendly plasticizer and wood flour, and has a viscosity similar to that of the conventional composition and is easy to inject.
PVC(Polyvinyl chloride)는 열가소성 플라스틱의 하나로 '폴리염화비닐', '염화비닐수지'라고도 한다. PVC (Polyvinyl Chloride) is one of the thermoplastic plastics. It is also called 'polyvinyl chloride' and 'vinyl chloride resin'.
즉 PVC는 염화비닐을 주성분으로 하는 플라스틱으로 필름, 시트, 성형품, 캡 등 광범위한 제품으로 가공된다.
In other words, PVC is made of vinyl chloride-based plastic and processed into a wide range of products such as films, sheets, molded parts, and caps.
PVC는 원래 딱딱한 물질이지만 프탈산계(phthalates, DEHP, DINP, DBP 등) 가소제나 아디핀산계(adipates,DHEA 등) 가소제를 사용해 유연성과 탄력성을 높인 뒤 제품화된다.
PVC is originally a hard material, but it is commercialized after using plasticizers such as phthalates (DEHP, DINP, DBP) plasticizers and adipates (DHEA) plasticizers to increase flexibility and elasticity.
그린피스는 프탈산계 가소제가 간과 신장 장애·생식 기형을 유발하고 내분비계 장애 물질임을 경고한 바 있고 지난 98년 한국소비자보호원은 PVC 소재 장난감에서 가소제를 다량 검출하여 가소제의 유해성에 대한 논란이 벌어지기도 했다.
Greenpeace has warned that phthalate plasticizers cause liver, kidney failure and reproductive malformations and that they are endocrine disruptors. In 1998, the Korea Consumer Protection Board (KCPA) detected a large amount of plasticizers in PVC-based toys, .
또 유럽연합 산하 '독성·생태독성·환경에 관한 과학위원회'는 PVC로 만든 장난감 제품이 인체에 유해한지에 대해 검토한 후 3세 이하의 아이가 장난감을 빨 때 잠재적인 유해화학물질인 DEHP와 DINP등이 아이에게 좋지 않은 영향을 미칠 수 있다고 판단한 바 있다.
The European Commission's Committee on Toxicity, Ecotoxicity, and the Environment reviewed the toxicity of toy products made of PVC on the human body, and found that DEHP, a potentially hazardous chemical, DINP, etc., can have a bad influence on the child.
그리고 이러한 물질들은 동물 실험에서 간과 콩팥에 심한 손상을 입힌다는 점이 실험적으로 밝혀진 적이 있다.
And it has been experimentally proven that these substances cause severe damage to the liver and kidneys in animal experiments.
또한 PVC가 연소하는 과정에서 다이옥신을 배출하는 것으로 알려졌는데, 이 다이옥신은 강한 독성을 가지고 있어 인체에 축적되면 기형아 출산과 암 발생의 원인이 되므로, PVC에 대한 안전성 문제가 더욱 대두하고 있다.
It is also known that dioxins are emitted during the combustion of PVC. This dioxin has a strong toxicity and accumulation in the human body may cause birth defects and cancer, and thus, safety problems against PVC are increasing.
이에 따라 유럽이나 미국 등 선진국에서는 가소제가 간이나 신장에 암을 유발하고 다른 장기에도 유해한 영향을 미칠 수 있다고 하여 가소제가 포함된 PVC 재질의 유아용 완구에 대한 판매 금지 또는 제품 회수 등의 안전 조치를 취하고 있다.
Accordingly, in advanced countries such as Europe and the United States, plasticizers may cause cancer in the liver and kidneys, and may have harmful effects on other organs. Therefore, we take safety measures such as prohibition of sales of PVC toys containing plasticizers or product recovery have.
우리나라는 PVC를 말랑말랑하게 해주는 물질인 DEHP를 치아발육기나 젖꼭지 등 어린이들이 입에 넣을 수 있는 일부 PVC 완구에 대해서만 사용을 금지하고 있다. 또한 2005년부터는 식품의약품안전청에서 병원의 수액팩과 혈액팩으로 PVC 팩을 사용하지 말라는 권고를 한 상태다.
Korea is prohibiting the use of DEHP, a substance that makes PVC waxy, only for some PVC toys that can be put into the mouth by children such as teeth makers and nipples. In 2005, the Korea Food & Drug Administration issued a recommendation not to use PVC packs with sap packs and blood packs in hospitals.
PVC의 가소제에 대한 유해성이 점차 입증되면서, 유해물질이 발생하지 않는 친환경 플라스틱 또는 친환경 가소제를 사용한 제품에 대한 관심이 증가하고 있다.
As the toxicity of PVC to plasticizers is increasingly recognized, there is growing interest in products that use environmentally friendly plastics or environmentally friendly plasticizers that do not generate hazardous substances.
에틸렌초산비닐 공중합체(ethylene-vinyl acetate copolymer)는 에틸렌과 초산 비닐 모노머를 공중합시켜 얻어지는 중합체로 EVA라고 한다. An ethylene-vinyl acetate copolymer is a polymer obtained by copolymerizing ethylene and vinyl acetate monomers and is referred to as EVA.
초산 비닐의 함유량이 증가함에 따라 밀도가 증가하지만 한편 결정화도는 저하하여 유연성은 늘어난다.
As the content of vinyl acetate increases, the density increases, while the degree of crystallization decreases and the flexibility increases.
EVA는 투명성, 유연성, 저온 취성 등이 우수하여 신발용 소재, 농업용 필름, 압출 코팅 등의 원료 수지로 사용되고 있으며, 연성이 우수하여 PVC(폴리염화비닐 polyvinyl chloride) 대체 소재로도 주목받고 있다. 또한 유해물질을 배출하는 PVC와 달리 인체에 무해한 특징이 있다.
EVA has excellent transparency, flexibility and low-temperature embrittlement, and is used as a raw material resin for shoe material, agricultural film, extrusion coating, etc. Also, it is attracting attention as a substitute material of PVC (polyvinyl chloride) because of its excellent ductility. Unlike PVC, which emits toxic substances, it is harmless to human body.
한편, 가소제는 딱딱한 플라스틱에 유연성 및 탄성을 주어 성형하기 쉽도록 하는 등 제품으로서의 특성을 갖출 수 있도록 첨가되는 물질을 말한다. 섞임성 및 가소성 외에도 내열성·내한성·내연성·전기적 성질 등도 향상시킬 수 있다.
On the other hand, a plasticizer is a substance added so as to have characteristics as a product, such as being easy to mold by imparting flexibility and elasticity to rigid plastic. Heat resistance, cold resistance, flame resistance, electrical properties and the like can be improved in addition to mixing and plasticity.
대표적인 플라스틱인 PVC는 원래 딱딱한 물질로 프탈산계(phthalates, DEHP, DINP, DBP 등) 가소제나 아디핀산계(adipates, DHEA 등) 가소제를 사용해 유연성과 탄력성을 높인 뒤 제품화된다.
PVC, which is a typical plastic, is originally manufactured as a hard material after increasing its flexibility and elasticity by using phthalates (DEHP, DINP, DBP, etc.) plasticizers or adipates (DHEA etc.) plasticizers.
그러나 앞서 서술한 바와 같이, 프탈산계 가소제가 간과 신장 장애ㆍ생식 기형을 유발하고 내분비계 장애 물질임이 알려지면서, 유해물질이 발생하지 않고 환경 친화적인 새로운 가소제가 요구되고 있다.
However, as described above, phthalate plasticizers cause liver, kidney disorder, reproductive anomalies, and are known to be endocrine disruptors, so that new environmentally friendly plasticizers without harmful substances are required.
친환경 가소제는, 환경호르몬 의심물질인 ortho-phthalates를 원료로 하지 않은 제품, 이를 원료로 하고 있더라도 최종 산물이 규제물질이 아닌 제품(DEHP, DINP, DIDP, DBP, BBP, DnOP 및 DiBP), 여러가지 규제 중금속류를 포함하고 있지 않은 제품 또는 식물성 원료를 사용한 제품으로 정의되고 있다.
Environmentally friendly plasticizers are products that do not use ortho-phthalates, which are suspected substances of environmental hormones, as raw materials, but products whose final products are not regulated substances (DEHP, DINP, DIDP, DBP, BBP, DnOP and DiBP) It is defined as products that do not contain heavy metals or products that use vegetable raw materials.
친환경 가소제의 종류로는 DOTP(Dioctyl Terephthalate), DPHP(Dipropylheptyl Phthalate), ATBC(acetyl tributyl citrate), DINCH(diisononylester) 등이 있다.
Examples of environmentally friendly plasticizers include DOTP (Dioctyl Terephthalate), DPHP (Dipropylheptyl Phthalate), ATBC (acetyl tributyl citrate) and DINCH (diisononylester).
디옥틸텔레프탈레이트(Dioctyl Terephthalate, DOTP)는 프탈레이트가 함유되지 않으며, 열안정성이 우수하고 대부분의 유기용제에서 용해된다.Dioctyl Terephthalate (DOTP) is free of phthalates, has excellent thermal stability and is soluble in most organic solvents.
DOTP는 뛰어난 전성, 낮은 휘발성과 훌륭한 가소효율성을 지니고 있으며, 많은 응용분야에서 ortho-phthalates를 대체할 수 있다.
DOTP has excellent volatility, low volatility and excellent digestibility, and can replace ortho-phthalates in many applications.
한편, 목분 폴리머(wood plastic composities, WPC) 또는 우드 플라스틱이라 불리는 소재는, 열가소성 수지(폴리에틸렌, 폴리프로필렌 또는 폴리염화비닐)와 목질강화제(목분 또는 목섬유)를 혼합한 소재이다.
On the other hand, materials called wood plastic composites (WPC) or wood plastic are materials obtained by mixing thermoplastic resins (polyethylene, polypropylene or polyvinyl chloride) with wood-reinforcing agents (wood or wood fibers).
WPC는 뒤틀림이 없고, 내충성, 미적 아름다움, 내구성 등을 보유하여, 데크재, 창호재, 울타리, 가드레일, 외벽재 및 지붕 등에 다양하게 이용되고 있다.
WPC has no distortion, has insecticide, aesthetic beauty, durability and is widely used for deck material, window fence, fence, guardrail, exterior wall and roof.
그러나 WPC에서 목분을 30% 이상 혼합하여 제조할 경우, 강도는 증가하지만 제조과정에서 점도가 급격히 증가하여 사출 공정에 어려움을 겪는다.
However, when WPC is produced by mixing more than 30% of wood powder, the strength increases, but the viscosity increases rapidly during the manufacturing process, which makes the injection process difficult.
이에 본 발명자는 사출이 용이한 연성 친환경 조성물에 관한 발명을 안출하였으며, EVA/PVC 컴파운드, DOTP 및 목분을 적정비율 함유하는 조성물을 도출함으로써, 본 발명을 완성하였다.
Accordingly, the present inventor has discovered an invention relating to a flexible eco-friendly composition which can be easily injected, and completed the present invention by deriving a composition containing EVA / PVC compound, DOTP and wood flour at an appropriate ratio.
한편 본 발명과 관련된 선행기술로는 공개특허공보 제10-2006-0037386호에 플라스틱과 목재를 포함하는 복합재료에 대해 기재되어 있다. In the prior art related to the present invention, a composite material including plastics and wood is disclosed in Japanese Patent Application Laid-Open No. 10-2006-0037386.
상기 선행기술은 톱밥, 목질 섬유 및/또는 목재 조각 형태의 목재 55~90 질량%와, 부분 가교결합 멜라민 수지 에테르 또는 부분 가교결합 열가소성 플라스틱 및 가교결합 멜라민 수지 에테르의 혼합물 45~10 중량%를 함유하는 복합 재료에 관한 것이다.
The prior art comprises 45 to 10% by weight of a mixture of 55 to 90% by mass of wood in the form of sawdust, wood fiber and / or wood chips, and partially crosslinked melamine resin ether or partially crosslinked thermoplastic plastics and crosslinked melamine resin ether To a composite material.
또한 공개특허공보 제10-1998-0074715호에는 톱밥이 배합되는 사출용 수지의 조성방법에 관한 것으로, 자연환경에서 양산되고 있는 나무, 낙엽, 볏짚, 보릿짚, 갈대 등을 포함하여 분쇄하여 조성되는 톱밥 등에 아교풀을 9:1의 중량비로 배합하고, 이를 사출용수지와 7:3 내지 3:7의 중량비율로 혼합 조성하여 사출용 수지의 원료로 사용할 수 있도록 한 것이다.
In addition, Japanese Unexamined Patent Application Publication No. 10-1998-0074715 discloses a method for forming an injection resin in which sawdust is blended. In this method, a sawdust, which is produced by crushing a wood, a fallen straw, a straw straw, And glue are mixed in a weight ratio of 9: 1 and mixed with an injection resin at a weight ratio of 7: 3 to 3: 7 to be used as a raw material for an injection resin.
그러나 상기 선행기술들은 모두 목재를 30% 이상 함유하고 있어, 앞서 서술한 바와 같이 사출공정에 어려움이 발생할 문제점이 있다.
However, the above prior arts all contain more than 30% of wood, which causes difficulties in the injection process as described above.
또한 등록특허공보 제10-1322898호에 기재된 사출형 복합재료는, 목분을 포함하는 식물성 천연 분말을 PP, PE, PVC, EVA, Nylon 또는 PET 중 어느 하나 이상을 포함하는 범용 플라스틱과 혼합하여 펠렛 형상으로 압출 성형하는 것을 특징으로 하고 있다.
The injection-molded composite material described in Patent Publication No. 10-1322898 is obtained by mixing a vegetable natural powder including wood powder with a general-purpose plastic containing at least one of PP, PE, PVC, EVA, Nylon or PET to form a pellet shape Is extrusion-molded.
그러나 상기 선행기술은 가소제에 대해 기재되어 있지 않아, 가소제 사용에 따른 효과에 대해서는 알 수 없는 문제점이 있다.However, the prior art does not disclose the plasticizer, and thus there is a problem that the effect of using the plasticizer is unknown.
본 발명에서 해결하고자 하는 과제는 사출이 용이한 연성 친환경 조성물을 제공하는 데에 있다. A problem to be solved by the present invention is to provide a ductile eco-friendly composition which is easily injected.
본 발명에서 해결하고자 하는 또 다른 과제는 EVA(ethylene-vinyl acetate)/PVC(Polyvinyl chloride) 컴파운드 100 중량부에 대하여 친환경 가소제인 DOTP(Dioctyl Terephthalate) 5~15 중량부 및 목분 3~7 중량부를 포함하는 것을 특징으로 하는 사출이 용이한 연성 친환경 조성물을 제공하는 데에 있다. Another object to be solved by the present invention is to provide a resin composition comprising 5 to 15 parts by weight of DOTP (Dioctyl Terephthalate), an environmentally friendly plasticizer, and 3 to 7 parts by weight of wood powder, based on 100 parts by weight of an ethylene-vinyl acetate (PVC) And which is easy to inject.
본 발명에서 해결하고자 하는 또 다른 과제는 따른 친환경 가소제 및 목분을 함유하여 친환경적인 효능이 있으며, 기존의 조성물과 비슷한 점도를 보유하여 사출이 용이한 효능을 보유한 조성물을 제공하는 데에 있다.
Another object of the present invention is to provide a composition having an environmentally friendly effect containing an environmentally friendly plasticizer and wood flour according to the present invention and possessing a viscosity similar to that of the conventional composition and having an easily injectable effect.
본 발명은 EVA(ethylene-vinyl acetate)/PVC(Polyvinyl chloride) 컴파운드 100 중량부에 대하여 친환경 가소제인 DOTP(Dioctyl Terephthalate) 5~15 중량부 및 목분 3~7 중량부를 포함하는 것을 특징으로 하는 사출이 용이한 연성 친환경 조성물을 제공함으로써 기술적 과제를 해결하고자 한다.The present invention relates to an injection molding machine, which comprises 5 to 15 parts by weight of DOTP (Dioctyl Terephthalate) which is an environmentally friendly plasticizer and 3 to 7 parts by weight of wood powder, based on 100 parts by weight of an ethylene-vinyl acetate (EVA) And to solve the technical problem by providing an easily ductile eco-friendly composition.
본 발명은 친환경 가소제 및 목분을 함유하여 친환경적인 효능이 있으며, 기존의 조성물과 비슷한 점도를 보유하여 사출이 용이한 효능을 보유한 연성 친환경 조성물을 제공함으로써 기술적 과제를 해결하고자 한다.
The present invention aims at solving the technical problem by providing a eco-friendly composition containing an environmentally friendly plasticizer and wood flour, having an environmentally friendly effect and possessing a viscosity similar to that of the conventional composition and having an easily injectable effect.
본 발명에 따른 조성물은 EVA를 포함함으로써, 친환경적인 조성물을 제공할 수 있는 효능을 보유하고 있다. The composition according to the present invention has an effect of providing an environmentally friendly composition by including EVA.
본 발명에 따른 조성물은 PVC와 EVA를 혼합하여 사용함으로써, 촉감과 탄력의 품질이 향상되는 효능을 보유하고 있다.The composition according to the present invention has the effect of improving the tactile property and elasticity quality by using a mixture of PVC and EVA.
본 발명에 따른 조성물은 친환경 가소제인 DOTP를 사용하여, 유해물질이 발생하지 않는 효능을 보유하고 있다. The composition according to the present invention uses DOTP, which is an environmentally friendly plasticizer, to have no harmful substances.
본 발명에 따른 조성물은 목분을 첨가하여, 환경 친화적인 이미지를 더욱 강조함과 동시에, 사출에 용이한 효능을 보유하고 있다.The composition according to the present invention further enhances environmentally friendly images by adding wood powder, and has an effect of easy injection.
본 발명에 따른 조성물은 방향 성분을 추가로 포함하여, 향기가 나는 효능을 보유하고 있다.
The composition according to the present invention further contains a fragrance component and has a fragrant efficacy.
도 1은 본 발명에 따른 사출이 용이한 연성 친환경 조성물을 사출성형하여 제조한 것을 나타낸 사진이다.
도 2는 EVA-Pure와 EVA-5% Wood 복합체에 대한 점도(viscosity) 측정 결과를 나타낸 그래프이다.
도 3은 EVA/PVC-Pure와 EVA/PVC-5% Wood 복합체에 대한 점도(viscosity) 측정 결과를 나타낸 그래프이다. FIG. 1 is a photograph showing that the flexible eco-friendly composition which is easily injectable according to the present invention is produced by injection molding.
FIG. 2 is a graph showing the viscosity measurement results for EVA-Pure and EVA-5% Wood composites.
3 is a graph showing the results of viscosity measurement for EVA / PVC-Pure and EVA / PVC-5% Wood composites.
본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 안 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.
The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may properly define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.
따라서 본 명세서에 기재된 실시예와 실험예는 본 발명의 가장 바람직한 일실시예에 불과한 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.
Therefore, the embodiments and the examples described herein are merely the most preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents and variations Examples should be understood.
본 발명에 따른 사출이 용이한 연성 친환경 조성물은 PVC와 EVA를 혼합한 컴파운드를 이용함으로써, 촉감과 탄력의 품질이 향상되는 효능을 보유하고 있다.
The flexible eco-friendly composition according to the present invention has an effect of improving the quality of touch and elasticity by using a compound containing a mixture of PVC and EVA.
또한 본 발명에 따른 조성물은 친환경 가소제 및 목분을 사용하여 유해물질이 발생하지 않고, 환경 친화적인 조성물을 제공할 수 있음과 동시에, 점도의 변화가 미미하여 사출공정에 어려움이 없는 것을 특징으로 하고 있다.
Further, the composition according to the present invention is characterized in that it can provide a composition which does not generate harmful substances by using an environmentally friendly plasticizer and wood powder, and which is environmentally friendly, and has little change in viscosity, so that there is no difficulty in the injection process.
본 발명에 따른 사출이 용이한 연성 친환경 조성물은 다음과 같이 제조될 수 있다.
The flexible eco-friendly composition which can be easily injected according to the present invention can be prepared as follows.
PVC 컴파운드와 EVA 컴파운드를 믹서에 넣고 혼합하여 PVC/EVA 컴파운드를 제조한다. 혼합 비율은 PVC 100 중량부 기준으로 EVA가 10~200 중량부 혼합될 수 있으며, 바람직하게는 PVC와 EVA가 동량으로 혼합될 수 있다.
PVC compound and EVA compound are mixed in a mixer and mixed to produce PVC / EVA compound. The blending ratio may be 10 to 200 parts by weight of EVA based on 100 parts by weight of PVC, and preferably, PVC and EVA may be mixed in the same amount.
믹서에 소재를 투입한 후, 150~190℃의 온도와 20~60 rpm의 용융블랜딩 조건에서 혼합될 수 있다.
After the material is put into the mixer, it can be mixed at a temperature of 150 to 190 DEG C and a melt blending condition of 20 to 60 rpm.
혼합된 PVC/EVA 컴파운드에 가소제와 목분을 첨가한다. Add plasticizer and wood flour to the mixed PVC / EVA compound.
가소제는 DIDP(Diisodecyl Phthalate), DOP(Di2-Ethylhexyl Phthalate), DINP(Diisonony Phthalate), DOA(Di2-Ethylhexyl Adipate), TOTM(Trioctyl Timellitate), DOS(Di2-Ethylhexyl Sebacate), DOZ(Di2-Ethylhexyl Azelate) 또는 DBP(Dibutyl Phthalate) 등이 사용될 수 있으나, 바람직하게는 유해물질이 분비되지않는 친환경 가소제인 DOTP(Dioctyl Terephthalate)가 사용될 수 있다.
The plasticizer may be selected from the group consisting of DIDP (Diisodecyl Phthalate), DOP (Di2-Ethylhexyl Phthalate), DINP (Diisonony Phthalate), DOA (Di2- Ethylhexyl Adipate), TOTM (Trioctyl Timellitate) ) Or DBP (Dibutyl Phthalate) may be used, but DOTP (Dioctyl Terephthalate) which is an eco-friendly plasticizer which does not release toxic substances can be used.
가소제는 PVC/EVA 컴파운드 100 중량부 기준으로, 5~15 중량부 첨가될 수 있으며, 바람직하게는 10 중량부 첨가될 수 있다.
The plasticizer may be added in an amount of 5 to 15 parts by weight, preferably 10 parts by weight, based on 100 parts by weight of the PVC / EVA compound.
목분은 목재를 잘게 분쇄한 것인데, 설계 조건에 따라 전처리 후 섬유만으로 된 것을 사용할 수도 있다.
Wood flour is finely pulverized wood. Depending on the design conditions, it is possible to use only fiber after pretreatment.
목분은 30~180 ㎛ 크기의 목분이 혼합될 수 있으며, 오븐에서 충분히 수분이 제거된 후 사용될 수도 있다.
Wood flour may be mixed with wood of size 30 to 180 μm and may be used after sufficient moisture has been removed from the oven.
목분은 PVC/EVA 컴파운드 100 중량부 기준으로 3~7 중량부 혼합될 수 있으며, 바람직하게는 5 중량부 혼합될 수 있다. The wood flour can be mixed with 3 to 7 parts by weight, preferably 5 parts by weight, based on 100 parts by weight of the PVC / EVA compound.
목분의 혼합 비율이 30 중량부를 초과하는 경우, 사출을 위한 조성물의 점도가 급격히 상승하여 사출하는 조건을 재설정해야하므로, 사출 공정에 어려움이 발생하게 된다. 따라서 목분의 혼합비율은 30 중량부를 초과하지 않도록 설계될 수 있다.
When the mixing ratio of the wood powder is more than 30 parts by weight, the viscosity of the composition for injection increases sharply and the injection conditions must be reset, which makes difficult the injection process. Therefore, the mixing ratio of wood flour can be designed so as not to exceed 30 parts by weight.
또한 여기에 방향성분을 추가하여 사출이 용이한 연성 친환경 조성물에서 향기가 나도록 설계할 수도 있다.It is also possible to design the composition so as to give a fragrance to a flexible eco-friendly composition which is easy to inject by adding an orientation component thereto.
방향 성분은 향기 중합체(polymer)가 사용될 수 있으며, 과일향기, 꽃향기 등 다양한 종류의 향이 사용될 수 있다.
As a directional component, a perfume polymer may be used, and various kinds of fragrances such as fruit fragrance, floral fragrance and the like may be used.
참고예Reference example
1. 성분에 따른 조성물의 제조 1. Preparation of compositions according to composition
도 1은 본 발명에 따른 사출이 용이한 연성 친환경 조성물을 사출성형하여 제조한 것을 나타낸 사진으로, 왼쪽에서부터 PVC, EVA, EVA + 5% 목분, EVA/PVC 및 EVA/PVC + 5% 목분으로 제조된 것이다.
FIG. 1 is a photograph showing injection molded molding of a flexible eco-friendly composition according to the present invention. FIG. 1 is a photograph of PVC, EVA, EVA + 5% wood powder, EVA / PVC and EVA / PVC + 5% wood powder .
PVC만으로 제조한 조성물과 비교하여, EVA로 제조하거나, EVA를 추가한 조성물이 고무 특성이 뛰어나고 탄력이나 촉감이 더욱 개선된 것을 확인하였다. 또한 목분을 첨가한 경우, 나무 색을 띠어 친환경적인 이미지를 주는 것을 알 수 있다.
Compared with a composition made only of PVC, it was confirmed that the composition prepared by EVA or the composition containing EVA had excellent rubber properties and improved elasticity and feel. In addition, when wood powder is added, it can be seen that it gives an eco-friendly image with a wood color.
실험예Experimental Example
1. 점도( 1. Viscosity (
viscosityviscosity
) 측정) Measure
1-1. 실험 과정1-1. Experimental course
목본을 혼합한 조성물의 경우, 점도가 너무 높아져 사출 성형에 어려움이 발생하게 된다. In the case of a composition in which the woody material is mixed, the viscosity becomes too high to cause difficulty in injection molding.
본 실험예에서는 본 발명에 따른 사출이 용이한 연성 친환경 조성물의 점도를 측정하여 이를 확인하고자 하였다.
In this Example, the viscosity of a flexible eco-friendly composition which can be easily injected according to the present invention was measured and confirmed.
실험에 사용된 조성물을 제조하기 위해 PVC/EVA 조성물의 시편은 인터널 믹서(Internal Mixer) 안으로 투입한 후 160-180℃, 30-50 rpm의 용융블랜딩 조건에서 토오크가 안정화 될 때까지 충분히 혼합한 후 목분과 가소제를 투입하여 제조하였으며, 이 용융 혼합물을 인터널 믹서로부터 꺼내어 핫프로스(hot Press) 사이에 위치시킨 후 컴프레션 몰딩(Compression Molding)에 의해 시편을 제작하였다. To prepare the compositions used in the experiment, the specimens of the PVC / EVA composition were placed in an internal mixer and mixed thoroughly at 160-180 ° C, 30-50 rpm melt blending conditions until the torque stabilized And the plasticizer was added. After the molten mixture was taken out from the internal mixer and placed between hot presses, a specimen was prepared by compression molding.
점도를 측정하기 위하여 지름 5 cm 시편으로 점도(Viscosity)를 측정하였다.
Viscosity was measured with a 5 cm diameter specimen to measure the viscosity.
1-2. 실험 결과1-2. Experiment result
도 2는 EVA-Pure와 EVA-5% Wood 조성물에 대한 점도(viscosity) 측정 결과를 나타낸 그래프이다.
2 is a graph showing the results of viscosity measurement for EVA-Pure and EVA-5% Wood compositions.
EVA를 사용한 조성물과 목분을 5% 첨가한 EVA 조성물의 점도를 측정한 결과, 다양한 전단응력에서 큰 변화없이 비슷한 점도의 특성을 보이는 것을 확인하였다.
As a result of measuring the viscosity of the composition using EVA and the EVA composition containing 5% of wood powder, it was confirmed that they exhibited similar viscosity characteristics without significant change in various shear stresses.
도 3은 EVA/PVC-Pure와 EVA/PVC-5% Wood 조성물에 대한 점도(viscosity) 측정 결과를 나타낸 그래프이다.
3 is a graph showing viscosity measurement results for EVA / PVC-Pure and EVA / PVC-5% Wood compositions.
위 결과와 마찬가지로, EVA/PVC를 사용한 조성물과 목분을 5% 첨가한 EVA/PVC 조성물의 점도에 큰 변화없이 비슷한 값을 나타내는 것을 알 수 있다.
Similar to the above results, it can be seen that the viscosity of the composition using EVA / PVC and the EVA / PVC composition containing 5% of wood powder showed similar values without significant change.
따라서 이상의 결과로, 본 발명에 따른 조성물은 사출공정에서 점도의 급격한 변화가 없어, 사출공정이 용이한 효능을 보유함을 알 수 있다.
Accordingly, it can be seen that the composition according to the present invention does not show a rapid change in viscosity in an injection process, and has an effect of facilitating the injection process.
Claims (5)
상기 EVA/PVC 컴파운드는 EVA와 PVC가 동량으로 혼합된 것이고,
상기 목분은 30~180 ㎛ 크기이며,
상기 EVA/PVC 컴파운드, DOTP 및 목분은 150~190℃의 온도와 20~60 rpm의 용융블랜딩 조건으로 혼합되는 것을 특징으로 하는 사출이 용이한 연성 친환경 조성물.
10 parts by weight of DOTP (Dioctyl Terephthalate), an environmentally-friendly plasticizer, and 5 parts by weight of wood powder, based on 100 parts by weight of an ethylene-vinyl acetate (EVA)
The EVA / PVC compound is a mixture of EVA and PVC in the same amount,
The wood powder has a size of 30 to 180 mu m,
Wherein the EVA / PVC compound, DOTP, and wood powder are mixed at a temperature of 150 to 190 DEG C and a melt blending condition of 20 to 60 rpm.
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| CN108774372B (en) * | 2018-06-22 | 2021-03-19 | 安徽索亚装饰材料有限公司 | Acrylonitrile modified wood powder reinforced wood-plastic foaming material |
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| KR100219741B1 (en) | 1997-03-21 | 1999-09-01 | 이영철 | Compounding method of injection molding resin containing sawdust |
| DE10333893A1 (en) | 2003-07-22 | 2005-02-10 | Kompetenzzentrum Holz Gmbh | Plastics and wood composites |
| KR101322898B1 (en) | 2007-05-11 | 2013-10-29 | 주식회사 포스코 | Method for manufacturing molten irons comprising nickels |
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| US20070037926A1 (en) | 2005-08-12 | 2007-02-15 | Olsen David J | Polyvinyl chloride compositions |
| WO2008027435A1 (en) | 2006-08-30 | 2008-03-06 | Eastman Chemical Company | Terephthalates as plasticizers in vinyl acetate polymer compositions |
| KR101115679B1 (en) * | 2008-04-01 | 2012-03-14 | 주식회사 엘지화학 | Environmental polyvinyl chloride resin composition |
| CN103740005A (en) * | 2014-01-16 | 2014-04-23 | 黑生贤 | Production formula and process of waste PVC (polyvinyl chloride) wood-plastic composition |
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