KR20180092571A - Method of recycling waste plastics - Google Patents

Method of recycling waste plastics Download PDF

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Publication number
KR20180092571A
KR20180092571A KR1020170018434A KR20170018434A KR20180092571A KR 20180092571 A KR20180092571 A KR 20180092571A KR 1020170018434 A KR1020170018434 A KR 1020170018434A KR 20170018434 A KR20170018434 A KR 20170018434A KR 20180092571 A KR20180092571 A KR 20180092571A
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South Korea
Prior art keywords
zinc
waste plastics
long fiber
recycling
filler
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KR1020170018434A
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Korean (ko)
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강진호
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주식회사 설성프라스틱
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Priority to KR1020170018434A priority Critical patent/KR20180092571A/en
Publication of KR20180092571A publication Critical patent/KR20180092571A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • B29B11/06—Making preforms by moulding the material
    • B29B11/10—Extrusion moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0286—Cleaning means used for separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B29K2105/162—Nanoparticles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

The present invention relates to a method of recycling waste plastics containing a long fiber filler, and especially, provides a method for manufacturing a recycling polymer composition, which comprises the following steps: pulverizing, washing and drying the waste plastics containing the long fiber filler; preparing a zinc-polymer nanocomposite by dispersing zinc nanoparticles having an average size of 2 to 20 nm and a reduced zinc-type crystal phase content of 50 wt% or more in synthetic rubber of the end of a carboxyl group; and melting and extruding a mixture containing materials of each step. According to the present invention, by incorporating the zinc-polymer nanocomposite, the physical properties of the polymer composition can be stabilized by regenerating the waste plastics, and thus it is possible to recycle long fiber type filler-containing waste plastics, which have been mostly disposed of till now.

Description

폐플라스틱의 재활용 방법{METHOD OF RECYCLING WASTE PLASTICS}METHOD OF RECYCLING WASTE PLASTICS BACKGROUND OF THE INVENTION [0001]

본 발명은 장섬유계 필러를 함유하는 폐플라스틱의 재활용 방법에 관한 것으로서, 특히 장섬유계 필러를 함유하는 폐플라스틱을 분쇄하여 세척, 건조한 후 아연-폴리머 나노복합체와 함께 혼합하여 용융, 압출함으로써 비교적 균질한 물성을 보유한 재생 폴리머 조성물을 제조하는 방법에 관한 것이다.The present invention relates to a method of recycling a waste plastic containing a long fiber filler, particularly, a waste plastic containing long fiber filler is pulverized, washed and dried, mixed with the zinc-polymer nanocomposite, melted and extruded, And a method for producing a recycled polymer composition having homogeneous physical properties.

최근 자동차 부품에의 플라스틱 재료의 사용이 늘고 있다. 특히 폴리프로필렌(PP) 수지는 가격이 저렴하고 비중이 낮으면서도 가공이 용이한 장점 때문에 종래에 자동차 부품용 소재로서 많이 사용되던 ABS 또는 나일론 수지를 대체하고 있는 추세이다. 그 예로서, 자동차 내장부품 용도로서 사용되는 PP 복합재료를 들 수 있다. 일반적으로 자동차 내장부품 소재로는 PP 수지에 여러 종류의 필러가 첨가되어 내충격성 및 강도을 보강한 것이 주로 사용된다. 최근에는 내충격성 및 인장강도를 모두 향상시키기 위해 복합재료 내에서 섬유 길이가 3㎜ 이상으로 존재하는 장섬유계 필러를 함유한 열가소성 폴리머 복합재료로 성형된 부품의 사용이 증가하고 있다. 상기 장섬유계 필러의 예로는 유리섬유, 합성섬유, 및 천연섬유 등을 들 수 있다.Recently, the use of plastic materials in automobile parts is increasing. In particular, polypropylene (PP) resins are inexpensive and have a low specific gravity and are easy to process, so they are replacing ABS or nylon resin, which was conventionally used as a material for automobile parts. As an example thereof, there can be mentioned a PP composite material used for automobile interior parts. Generally, automobile interior parts materials are mainly made by adding various kinds of fillers to PP resin and reinforcing impact resistance and strength. In recent years, in order to improve both the impact resistance and the tensile strength, there has been an increase in the use of parts molded from a thermoplastic polymer composite material containing a long fiber filler having a fiber length of 3 mm or more in a composite material. Examples of the long fiber type filler include glass fiber, synthetic fiber and natural fiber.

이에 따라 장섬유계 필러를 함유하는 폴리머 복합재료를 재활용할 수 있는 기술에 대한 연구가 활발히 진행되고 있다. 그러나 종래 플라스틱 재료의 재활용기술을 적용할 경우 장섬유계 필러가 함유된 폴리머 복합재료는 재활용되기 어렵다. 그 이유는, 재활용을 위한 세척공정에서 폐플라스틱의 장섬유계 필러와 매트릭스 수지와의 계면을 따라 페플라스틱 내부로 세척용 물이 침투, 흡수됨으로써 그 다음 공정인 압출 및 냉각공정을 거쳐 제조된 재생 폴리머재료의 물성이 전반적으로 저하되는 현상이 나타나기 때문이다. 이에 따라 현재의 플라스틱 재활용 업계에서는 기존 재활용기술이 적용 가능한 폴리머 복합재료만 따로 분리하여 재활용하고, 장섬유계 필러를 일정 수준 이상으로 함유한 폴리머 복합재료는 폐기물로 분류되어 매립이나 소각으로 전량 폐기 처리되고 있는 실정이다.Accordingly, researches on techniques for recycling a polymer composite material containing a long fiber filler have been actively conducted. However, when the conventional plastic material recycling technique is applied, the polymer composite material containing the long fiber filler is difficult to be recycled. The reason for this is that, in the cleaning process for recycling, the water for washing penetrates and absorbs into the plastic plastic along the interface between the long fiber type filler of the waste plastic and the matrix resin, And the physical properties of the polymer material are generally lowered. Accordingly, in the current plastic recycling industry, only the polymer composite material applicable to the existing recycling technology is separated and recycled, and the polymer composite material containing the long fiber type filler at a certain level or more is classified as waste, and is disposed of by incineration or landfill .

따라서 장섬유계 필러를 함유한 폐플라스틱의 재생을 위하여, 사용과정에서의 수지 재료의 열화, 재생과정에서의 이물질 혼입으로 인한 오염 및 이종재료 수지의 혼입, 그리고 수분흡수 및 물리화학적 변성 등에 의해 야기되는 물성의 저하를 보완할 수 있는 폐플라스틱의 재활용방법이 요구되고 있다.Therefore, in order to regenerate the waste plastic containing the long fiber filler, deterioration of the resin material during use, contamination due to foreign matter contamination during the regeneration process, incorporation of dissimilar material resin, and moisture absorption and physico- There is a need for a recycling method of waste plastics that can compensate for the deterioration of physical properties.

본 발명자들은 상기와 같은 문제점을 해결하기 위하여 연구 노력한 결과, 장섬유계 필러를 함유한 폐플라스틱의 재활용이 가능할 수 있는 조건을 설정하였다. 이에 따르면 장섬유계 필러를 함유한 재활용 폴리머를 사용함에 따른 물성의 저하를 보완할 수 있는 폐플라스틱 기반의 재생 폴리머 조성물의 제조방법을 제공하는데 그 목적이 있다.As a result of efforts to solve the above problems, the inventors of the present invention have set conditions under which waste plastics containing long fiber fillers can be recycled. The object of the present invention is to provide a method for producing a recycled polymer composition based on a waste plastic, which can compensate for a decrease in physical properties due to the use of a recycled polymer containing a long fiber filler.

본 발명은 장섬유계 필러를 함유하는 폐플라스틱의 재활용 방법에 관한 것으로서, 특히 폐플라스틱의 열화 및 이물질 혼입으로 인하여 분쇄물을 세척, 건조하여 용융 압출한 후 나타나는 물성의 저하를 보완하기 위하여 상기 분쇄물에 아연-폴리머 나노복합체를 혼합하는 것을 포함하는 폐플라스틱 기반의 재생 폴리머 조성물의 제조방법을 제공하는 것을 그 특징으로 한다.The present invention relates to a method of recycling waste plastic containing a long fiber filler, and more particularly, to a method of recycling waste plastics containing a long fiber type filler, which comprises washing the pulverized product with deterioration of waste plastics and incorporating foreign materials, The present invention provides a method for producing a recycled polymer composition based on a waste plastic, which comprises mixing zinc-polymer nanocomposite with water.

본 발명에 의하면 장섬유계 필러를 함유한 폐플라스틱의 재생과정에서 아연-폴리머 나노복합체를 혼입하여 용융, 압출함으로써 재생 폴리머 조성물을 제공할 수 있다. 그 결과, 폐플라스틱 재생과정에서의 수분흡수 및 물리화학적 변성 등에 의해 야기되는 물성 저하를 보완함과 동시에, 폐플라스틱 로트별에 따른 물성의 변화를 최소화할 수 있게 되었다.According to the present invention, the regenerated polymer composition can be provided by mixing and extruding the zinc-polymer nanocomposite in the regeneration process of the waste plastic containing the long fiber filler. As a result, the physical properties caused by water absorption and physico-chemical modification in the process of recycling waste plastics can be compensated for, and at the same time, changes in physical properties depending on waste plastic lot can be minimized.

본 발명에 적합한 상용화제의 예를 들면 말레인산 변형 폴리프로필렌, 실란계 화합물, 에폭시변성 폴리비닐 화합물 등을 들 수 있다. 또한 본 발명에 따른 재생 폴리머 조성물은 산화방지제, 착색제, 이형제, 윤활제, 광안정제, 고무와 같은 다양한 첨가제를 추가로 함유할 수 있으며, 이들 첨가제의 사용량은 원하는 최종 용도 및 특성을 포함한 다양한 요인에 따라 적절히 조정되어 적용될 수 있다.Examples of compatibilizing agents suitable for the present invention include maleic acid-modified polypropylene, silane-based compounds, and epoxy-modified polyvinyl compounds. The regenerated polymer composition according to the present invention may further contain various additives such as an antioxidant, a colorant, a release agent, a lubricant, a light stabilizer, and a rubber, and the amount of these additives to be used may vary depending on various factors Can be appropriately adjusted and applied.

본 발명에 적합한 상용화제의 예를 들면 말레인산 변형 폴리프로필렌, 실란계 화합물, 에폭시변성 폴리비닐 화합물 등을 들 수 있다. 또한 본 발명에 따른 재생 폴리머 조성물은 산화방지제, 착색제, 이형제, 윤활제, 광안정제, 고무와 같은 다양한 첨가제를 추가로 함유할 수 있으며, 이들 첨가제의 사용량은 원하는 최종 용도 및 특성을 포함한 다양한 요인에 따라 적절히 조정되어 적용될 수 있다.Examples of compatibilizing agents suitable for the present invention include maleic acid-modified polypropylene, silane-based compounds, and epoxy-modified polyvinyl compounds. The regenerated polymer composition according to the present invention may further contain various additives such as an antioxidant, a colorant, a release agent, a lubricant, a light stabilizer, and a rubber, and the amount of these additives to be used may vary depending on various factors Can be appropriately adjusted and applied.

본 발명에 적합한 상용화제의 예를 들면 말레인산 변형 폴리프로필렌, 실란계 화합물, 에폭시변성 폴리비닐 화합물 등을 들 수 있다. 또한 본 발명에 따른 재생 폴리머 조성물은 산화방지제, 착색제, 이형제, 윤활제, 광안정제, 고무와 같은 다양한 첨가제를 추가로 함유할 수 있으며, 이들 첨가제의 사용량은 원하는 최종 용도 및 특성을 포함한 다양한 요인에 따라 적절히 조정되어 적용될 수 있다.Examples of compatibilizing agents suitable for the present invention include maleic acid-modified polypropylene, silane-based compounds, and epoxy-modified polyvinyl compounds. The regenerated polymer composition according to the present invention may further contain various additives such as an antioxidant, a colorant, a release agent, a lubricant, a light stabilizer, and a rubber, and the amount of these additives to be used may vary depending on various factors Can be appropriately adjusted and applied.

Claims (1)

장섬유계 필러가 함유되어 있는 폐플라스틱을 분쇄한 후 세척, 건조하여 재생 플라스틱을 준비하는 단계;
평균크기 2~20㎚이며 환원형 아연 결정상의 함량이 50중량% 이상인 아연 나노입자를 카르복실기-말단 합성고무에 분산하여 아연-폴리머 나노복합체를 준비하는 단계; 그리고
상기 각 단계별로 준비된 물질들을 기계적으로 혼합한 후 용융, 압출하는 단계를 포함하는 재생 폴리머 조성물의 제조방법.Pulverizing waste plastic containing long fiber filler, washing and drying to prepare a recycled plastic;
Preparing a zinc-polymer nanocomposite by dispersing zinc nanoparticles having an average size of 2 to 20 nm and a reduced zinc-type crystal phase content of 50 wt% or more in a carboxyl-terminal synthetic rubber; And
And mechanically mixing the prepared materials for each of the above-mentioned steps, followed by melting and extruding the mixture.
KR1020170018434A 2017-02-10 2017-02-10 Method of recycling waste plastics KR20180092571A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102394680B1 (en) * 2021-08-13 2022-05-04 김민영 Method of preparing polymer composition including recycle polyolefin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102394680B1 (en) * 2021-08-13 2022-05-04 김민영 Method of preparing polymer composition including recycle polyolefin

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