KR102349448B1 - Insulating material reuseing polyethylene foam and the manufacturing method thereof - Google Patents

Insulating material reuseing polyethylene foam and the manufacturing method thereof Download PDF

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KR102349448B1
KR102349448B1 KR1020200159764A KR20200159764A KR102349448B1 KR 102349448 B1 KR102349448 B1 KR 102349448B1 KR 1020200159764 A KR1020200159764 A KR 1020200159764A KR 20200159764 A KR20200159764 A KR 20200159764A KR 102349448 B1 KR102349448 B1 KR 102349448B1
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weight
parts
polyethylene foam
article
flame retardant
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KR1020200159764A
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김영근
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주식회사 현대폴리텍
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    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
    • 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
    • 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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • 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
    • B29B2017/0424—Specific disintegrating techniques; devices therefor
    • B29B2017/0468—Crushing, i.e. disintegrating into small particles
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • 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
    • B29K2061/00—Use of condensation polymers of aldehydes or ketones or derivatives thereof, as moulding material
    • B29K2061/04—Phenoplasts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • B29L2023/225—Insulated
    • 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)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

A manufacturing method of a flame-retardant cold storage article using polyethylene foam according to the present invention comprises: a step of crushing already foam-molded polyethylene foam into a chip having a size of 5 to 10 mm in length and/or width to obtain a polyethylene foam chip; a step of preparing a flame retardant mixture consisting of 1 to 30 parts by weight of antimony trioxide, 1 to 3 parts by weight of molybdenum disulfide, 1 to 20 parts by weight of aluminum hydroxide or magnesium hydroxide, 0.1 to 5 parts by weight of stearic acid salt, 0.1 to 20 parts by weight of an antioxidant, and 0.1 to 3 parts by weight of CNT (carbon nanotube) or graphene based on 100 parts by weight of the polyethylene foam chip; a step of preparing 3 to 10 parts by weight of a phenolic resin based on 100 parts by weight of a filling material in which the polyethylene foam chip and the flame retardant mixture are mixed; a step of kneading a molding material for 25 to 35 minutes in a kneader after mixing the filling material based on the phenol resin; and a molding step of molding an article by putting the kneaded molding material into a mold. Accordingly, there is a beneficial effect in terms of recycling resources.

Description

폴리에틸렌 폼을 활용한 난연성 보냉 물품 및 그 제조방법{Insulating material reuseing polyethylene foam and the manufacturing method thereof}Flame-retardant cold storage article using polyethylene foam and manufacturing method thereof

이 발명은 폴리에틸렌 폼을 활용한 난연성 보냉 물품 및 그 제조방법에 관한 것으로, 보다 상세하게는 신발의 밑창 등 폴리에틸렌 폼으로 제조된 산업 폐기물을 재활용하여 LNG를 이송하는 파이프의 보냉 물품을 제조할 수 있도록 하는 폴리에틸렌 폼을 활용한 난연성 보냉 물품 및 그 제조방법에 관한 것이다.The present invention relates to a flame-retardant cold insulation article using polyethylene foam and a method for manufacturing the same, and more particularly, to manufacture a cold insulation article for a pipe that transports LNG by recycling industrial wastes made of polyethylene foam, such as shoe soles. It relates to a flame-retardant cold insulation article using polyethylene foam and a method for manufacturing the same.

액화천연가스(LNG)를 운반하는 운반선의 갑판 상에는 LNG 저장탱크와 연결되는 다수의 LNG 데크 파이프가 설치된다. 즉, LNG 운반선에는 복수의 LNG 저장탱크가 상호 분리된 구조로 형성되고, 각각의 LNG 저장탱크에는 데크 파이프가 독립적으로 연결되어 LNG의 적재 또는 하역 과정에서의 연결통로 역할을 하게 된다. 또한, LNG 운반선을 통해 운반된 LNG를 지상에 설치된 대형의 저장탱크로 이송하는 과정에서는 LNG 벙커링 파이프가 설치된다.A plurality of LNG deck pipes connected to an LNG storage tank are installed on the deck of a carrier that transports liquefied natural gas (LNG). That is, a plurality of LNG storage tanks are formed in a structure separated from each other in the LNG carrier, and a deck pipe is independently connected to each LNG storage tank to serve as a connecting passage in the process of loading or unloading LNG. In addition, an LNG bunkering pipe is installed in the process of transporting LNG transported through an LNG carrier to a large storage tank installed on the ground.

이와 같이 LNG를 이송하는데 사용되는 LNG 데크 파이프 또는 LNG 벙커링 파이프는 천연가스가 -162℃ 이하의 액화된 상태가 유지되도록 하기 위해서는 보냉이 필요하다.In this way, the LNG deck pipe or LNG bunkering pipe used to transport LNG requires cooling in order to maintain the liquefied state of natural gas below -162°C.

한편, 우리가 살아기는 생활주변에서는 신발의 밑창과 같은 생활용품, 건축용 보냉 제품, 각종 냉장 보냉재 또는 각종 단열재 등에서 폴리에틸렌 폼으로 제작된 후 폐기되는 폐기물을 쉽게 찾아 볼 수 있으며, 폐기되는 폐 폴리에틸렌 폼의 양은 매년 증가하고 있는 실정이다. 하지만, 폐 폴리에틸렌 폼은 이미 발포가 이루어진 상태이기 때문에 발포 폴리에틸렌 폼으로의 재사용은 불가능한 한계가 존재한다.On the other hand, around the life we live in, it is easy to find waste that is discarded after being made of polyethylene foam in household items such as shoe soles, cold storage products for construction, various refrigerated insulation materials or various insulation materials. The amount is increasing every year. However, since the waste polyethylene foam has already been foamed, there is a limit that it is impossible to reuse it as a foamed polyethylene foam.

그리고 폴리에틸렌 폼은 우레탄 폼이나 스틸렌 폼에 비하여 상대적으로 가격이 비쌀 뿐만 아니라 난연성으로 제작하는데 불리한 점이 있기 때문에 그 동안은 폐기되는 폴리에틸렌 폼을 난연성 제품으로 재활용하는 데에도 한계가 있었다.And, since polyethylene foam is relatively expensive compared to urethane foam or styrene foam, and has a disadvantage in producing flame retardant, there has been a limit to recycling discarded polyethylene foam as flame retardant products.

등록실용신안공보 20-0359096Registered Utility Model Publication 20-0359096 공개실용신안공보 20-2009-0010856Public Utility Model Publication 20-2009-0010856

이 발명은 신발의 밑창 등 폴리에틸렌 폼으로 제조된 산업 폐기물을 재활용하여 LNG를 이송하는 파이프의 보냉 물품을 제조할 수 있도록 하는 폴리에틸렌 폼을 활용한 난연성 보냉 물품 및 그 제조방법을 제공하는 데 목적이 있다.An object of the present invention is to provide a flame-retardant cold storage article using polyethylene foam, and a method for manufacturing the same, so that industrial waste manufactured from polyethylene foam, such as shoe soles, can be recycled to manufacture cold storage articles for pipes that transport LNG. .

전술한 바와 같은 목적을 달성하기 위한 폴리에틸렌 폼을 활용한 난연성 보냉 물품의 제조방법은 다음과 같이 이루어질 수 있다.A method of manufacturing a flame retardant cold insulation article using a polyethylene foam for achieving the object as described above may be made as follows.

이 발명의 일 실시예에 따른 폴리에틸렌 폼을 활용한 난연성 보냉 물품의 제조방법은 이미 발포 성형된 폴리에틸렌 폼을 길이 및/또는 폭이 5 ~ 10mm인 크기를 갖는 칩 형태로 파쇄하여 폴리에틸렌 폼 칩을 얻는 단계; 폴리에틸렌 폼 칩 100 중량부에 대하여, 삼산화 안티몬 1 ~ 30 중량부, 이황화 몰디브덴 1 ~ 3 중량부, 수산화 알루미늄 또는 수산화 마그네슘 1 ~ 20 중량부, 스테아리산 염 0.1 ~ 5 중량부, 산화방지제 0.1 ~ 20 중량부, CNT(탄소나노튜브) 또는 그래핀 0.1 ~ 3 중량부의 혼합비율로 이루어진 난연성 혼합물을 준비하는 단계; 폴리에틸렌 폼 칩과 난연성 혼합물이 혼합된 충진소재 100중량부에 대하여 3~10 중량부의 페놀 수지를 준비하는 단계; 페놀 수지를 베이스로 하여 충진소재를 혼합한 후, 혼련기에 넣어 25~35분 동안 성형소재를 혼련하는 단계; 및 혼련된 성형소재를 몰드에 넣어 물품을 성형하는 성형단계; 를 포함하여 이루어진다.The method of manufacturing a flame-retardant cold insulation article using a polyethylene foam according to an embodiment of the present invention is to obtain a polyethylene foam chip by crushing an already foamed polyethylene foam into a chip having a size of 5 to 10 mm in length and/or width step; Based on 100 parts by weight of the polyethylene foam chip, antimony trioxide 1 to 30 parts by weight, molybdenum disulfide 1 to 3 parts by weight, aluminum hydroxide or magnesium hydroxide 1 to 20 parts by weight, stearic acid salt 0.1 to 5 parts by weight, antioxidant 0.1 to 20 parts by weight, preparing a flame retardant mixture consisting of 0.1 to 3 parts by weight of CNT (carbon nanotube) or graphene; Preparing 3 to 10 parts by weight of a phenolic resin based on 100 parts by weight of a filling material in which the polyethylene foam chip and the flame retardant mixture are mixed; After mixing the filling material based on the phenol resin, kneading the molding material for 25 to 35 minutes in a kneader; and a molding step of molding the article by putting the kneaded molding material into a mold; is made including

이 발명의 일 실시예에 따른 폴리에틸렌 폼을 활용한 난연성 보냉 물품의 제조방법에서 충진소재에는 폴리에틸렌 폼 칩 100 중량부에 대하여 분말 형태의 탈크 또는 점토 1 ~ 20중량부가 더 혼합될 수 있다.1 to 20 parts by weight of talc or clay in powder form may be further mixed in the filling material in the method for manufacturing a flame retardant cold insulation article using polyethylene foam according to an embodiment of the present invention with respect to 100 parts by weight of the polyethylene foam chip.

이 발명의 일 실시예에 따른 폴리에틸렌 폼을 활용한 난연성 보냉 물품의 제조방법에서 성형단계에서 성형되는 물품은 LNG 이송 파이프를 감싸는 보냉재이며, 보냉재의 외각은 섬유강화플라스틱으로 피복된 상태가 되도록 하기 위해 몰드에는 보냉재의 외각을 이루는 외각부가 미리 배치되는 단계; 를 더 포함하여 이루어질 수 있다.In the method for manufacturing a flame-retardant cold insulation article using a polyethylene foam according to an embodiment of the present invention, the article molded in the forming step is an insulation material surrounding the LNG transport pipe, and the outer shell of the insulation material is coated with fiber-reinforced plastic. A step of pre-arranging an outer shell forming an outer shell of the cooling material in the mold; It may be made to further include.

이 발명의 일 실시예에 따른 폴리에틸렌 폼을 활용한 난연성 보냉 물품은 페놀 수지에 폴리에틸렌 폼 칩, 삼산화 안티몬, 이황화 몰디브덴, 수산화 알루미늄, 스테아리산 염, 산화방지제, CNT를 일정량씩 혼합되어 성형된 보냉부; 및 보냉부의 외각이 섬유강화플라스틱으로 피복되어 형성된 외각부; 로 구성될 수 있다.A flame-retardant cold insulation article using polyethylene foam according to an embodiment of the present invention is a cold storage formed by mixing a predetermined amount of a polyethylene foam chip, antimony trioxide, molybdenum disulfide, aluminum hydroxide, stearic acid salt, antioxidant, and CNT in a phenol resin. wealth; and an outer shell formed by coating the outer shell of the cooling unit with fiber-reinforced plastic; can be composed of

이 발명의 일 실시예에 따른 폴리에틸렌 폼을 활용한 난연성 보냉 물품에서 폴리에틸렌 폼 칩은 이미 발포 성형된 폴리에틸렌 폼을 길이 및/또는 폭이 5 ~ 10mm인 크기를 갖는 칩 형태로 파쇄된 것일 수 있다.In the flame retardant cold insulation article using the polyethylene foam according to an embodiment of the present invention, the polyethylene foam chip may be crushed into a chip shape having a size of 5 to 10 mm in length and/or width of a polyethylene foam already foamed.

이 발명의 일 실시예에 따른 폴리에틸렌 폼을 활용한 난연성 보냉 물품에서폴리에틸렌 폼 칩 100 중량부에 대하여, 삼산화 안티몬은 1 ~ 30 중량부, 이황화 몰디브덴은 1 ~ 3 중량부, 수산화 알루미늄은 1 ~ 20 중량부, 스테아리산 염은 0.1 ~ 5 중량부, 산화방지제는 0.1 ~ 20 중량부, CNT는 0.1 ~ 3 중량부씩 혼합될 수 있다.With respect to 100 parts by weight of the polyethylene foam chip, antimony trioxide is 1 to 30 parts by weight, molybdenum disulfide is 1 to 3 parts by weight, and aluminum hydroxide is 1 to 20 parts by weight, 0.1 to 5 parts by weight of stearic acid salt, 0.1 to 20 parts by weight of antioxidant, and 0.1 to 3 parts by weight of CNT may be mixed.

이 발명에 따른 폴리에틸렌 폼을 활용한 난연성 보냉 물품 및 그 제조방법에 의하면, 신발의 밑창 등 폐기되는 폴리에틸렌 폼을 재사용하여 LNG 이송 파이프의 보냉을 위한 보냉물품으로 사용할 수 있게 됨으로서 자원을 재활용하는 측면에서 유리한 효과가 있다.According to the flame-retardant cold insulation article using the polyethylene foam according to the present invention and its manufacturing method, the polyethylene foam, which is discarded such as the sole of a shoe, can be reused and used as a cold storage article for the cold storage of an LNG transport pipe, in terms of recycling resources has a beneficial effect.

나아가, 이 발명에 따른 폴리에틸렌 폼을 활용한 난연성 보냉 물품 및 그 제조방법에 의하면, 성형되는 물품에 난연성 물질이 포함됨에 따라서 난연성을 갖는 유용한 효과가 있다.Furthermore, according to the flame-retardant cold insulation article using the polyethylene foam according to the present invention and a method for manufacturing the same, there is a useful effect of having a flame retardancy as the flame-retardant material is included in the article to be molded.

도1은 이 발명의 일 실시 예에 따른 폴리에틸렌 폼을 활용한 난연성 보냉 물품의 제조방법을 설명하기 위한 도면.
도2는 이 발명의 일 실시 예에 따라 제작된 난연성 보냉 물품의 단면 구성도.1 is a view for explaining a method of manufacturing a flame-retardant cold insulation article using a polyethylene foam according to an embodiment of the present invention.
2 is a cross-sectional configuration view of a flame retardant cold insulation article manufactured according to an embodiment of the present invention.

이하에서는 이 발명의 실시 예에 따른 폴리에틸렌 폼을 활용한 난연성 보냉 물품 및 그 제조방법에 대하여 첨부된 도면을 참조하여 구체적으로 설명한다.Hereinafter, a flame retardant cold insulation article using polyethylene foam according to an embodiment of the present invention and a method for manufacturing the same will be described in detail with reference to the accompanying drawings.

이 발명의 실시 예를 설명하기 위한 도면에서 이 발명을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 유사한 부분에 대해서는 유사한 도면부호를 붙이기로 한다. 명세서 전체에서, 어떤 부분이 다른 부분과 "연결"되어 있다고 할 때, 이는 "직접적으로 연결"되어 있는 경우뿐 아니라, 그 중간에 다른 부재를 사이에 두고 "간접적으로 연결"되어 있는 경우도 포함한다. 또한, 어떤 부분이 어떤 구성요소를 "포함"한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 구비할 수 있다는 것을 의미한다.In the drawings for describing an embodiment of the present invention, in order to clearly describe the present invention, parts irrelevant to the description are omitted, and similar reference numerals will be assigned to similar parts throughout the specification. Throughout the specification, when a part is "connected" with another part, it includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another member interposed therebetween. . In addition, when a part "includes" a certain component, this means that other components may be further provided without excluding other components unless otherwise stated.

도1은 이 발명의 일 실시 예에 따른 폴리에틸렌 폼을 활용한 난연성 보냉 물품의 제조방법을 설명하기 위한 도면이고, 도2는 이 발명의 일 실시 예에 따라 제작된 난연성 보냉 물품의 단면 구성도이다. 도면 중에 표시되는 도면부호 100은 이 발명의 실시 예에 따른 난연성 보냉 물품을 지시하는 것이다.1 is a view for explaining a method of manufacturing a flame-retardant cold insulation article using a polyethylene foam according to an embodiment of the present invention, Figure 2 is a cross-sectional configuration diagram of the flame-retardant cold insulation article manufactured according to an embodiment of the present invention . Reference numeral 100 indicated in the drawings indicates a flame-retardant cooling article according to an embodiment of the present invention.

먼저, 도2를 참조하여, 이 발명의 실시 예에 따른 난연성 보냉 물품(100)에 대하여 설명하면, 난연성 보냉 물품(100)의 요부인 보냉부(102)는 액상의 페놀 수지를 베이스로 하여 폴리에틸렌 폼 칩(110), 삼산화 안티몬, 이황화 몰디브덴, 수산화 알루미늄, 스테아리산 염, 산화방지제, CNT가 일정 비율로 혼합된 혼합물로 성형된다. 그리고 보냉부(102)의 외각에는 섬유강화플라스틱으로 피복 형성된 외각부(104)가 형성될 수 있다.First, with reference to FIG. 2 , the flame retardant cold insulating article 100 according to the embodiment of the present invention will be described. The cold storage unit 102, which is a main part of the flame retardant cold insulating article 100, is a liquid phenolic resin as a base and polyethylene The foam chip 110, antimony trioxide, molybdenum disulfide, aluminum hydroxide, stearic acid salt, antioxidant, and CNT are molded into a mixture in a certain ratio. In addition, the outer shell 104 coated with fiber-reinforced plastic may be formed on the outer shell of the cooling part 102 .

도1을 참조하여, 이 발명의 일 실시 예에 따른 폴리에틸렌 폼을 활용한 난연성 보냉 물품의 제조방법을 설명한다.With reference to FIG. 1, a method of manufacturing a flame retardant cold insulation article using a polyethylene foam according to an embodiment of the present invention will be described.

폴리에틸렌 폼을 활용한 난연성 보냉 물품의 제조방법은 폴리에틸렌 폼 칩 준비단계, 난연성 혼합물 준비 단계, 페놀 수지 준비 단계, 혼련 단계, 성형 단계를 포함하여 이루어진다.The method for manufacturing a flame retardant cold insulation article using polyethylene foam includes a polyethylene foam chip preparation step, a flame retardant mixture preparation step, a phenolic resin preparation step, a kneading step, and a molding step.

< 폴리에틸렌 폼 칩 준비 >< Preparation of Polyethylene Foam Chips >

폴리에틸렌 칩은 폐기되는 신발 밑창 등과 같은 이미 발포 성형된 폴리에틸렌 폼을 수거하고 세척한 후, 소정의 크기로 파쇄하는 공정을 통해 준비된다. 폴리에틸렌 폼 칩의 파쇄는 파쇄기를 이용할 수 있고, 신발 밑창 등이 반듯한 형태가 아닐 수 있기 때문에 파쇄되는 폴리에틸렌 폼 칩의 형태도 반드시 일정할 형태일 필요는 없다. 다만, 파쇄기를 이용하여 이미 발포 성형된 폴리에틸렌 폼을 파쇄하는 과정에서 필요 이상으로 작은 크기로 파쇄하는 경우에는 먼지 발생과 같은 환경오염의 원인이 됨에 따라 길이 및/또는 폭이 5 ~ 10mm인 크기를 갖도록 하는 것이 바람직하다.Polyethylene chips are prepared through a process of collecting, washing, and crushing polyethylene foam that has already been foamed, such as discarded shoe soles, and the like. A crusher may be used for crushing the polyethylene foam chip, and the shape of the polyethylene foam chip to be crushed does not necessarily have to be in a uniform shape because the sole of a shoe may not have a straight shape. However, in the case of crushing the polyethylene foam that has already been foamed using a crusher to a smaller size than necessary, it may cause environmental pollution such as dust, so the size with a length and/or width of 5 to 10 mm is recommended. It is preferable to have

< 난연성 혼합물 준비 단계 >< Preparation of flame retardant mixture >

폴리에틸렌 폼 칩 100 중량부에 대하여, 삼산화 안티몬 1 ~ 30 중량부, 이황화 몰디브덴 1 ~ 3 중량부, 수산화 알루미늄 또는 수산화 마그네슘 1 ~ 20 중량부, 스테아리산 염 0.1 ~ 5 중량부, 산화방지제 0.1 ~ 20 중량부, CNT(탄소나노튜브) 또는 그래핀 0.1 ~ 3 중량부를 준비한다.Based on 100 parts by weight of the polyethylene foam chip, antimony trioxide 1 to 30 parts by weight, molybdenum disulfide 1 to 3 parts by weight, aluminum hydroxide or magnesium hydroxide 1 to 20 parts by weight, stearic acid salt 0.1 to 5 parts by weight, antioxidant 0.1 to Prepare 20 parts by weight, 0.1 to 3 parts by weight of CNT (carbon nanotube) or graphene.

삼산화 안티몬, 이황화 몰디브덴, 수산화 알루미늄 또는 수산화 마그네슘, 스테아리산 염, 산화방지제, CNT(탄소나노튜브) 또는 그래핀은 모두 분말 형태이다.Antimony trioxide, molybdenum disulfide, aluminum or magnesium hydroxide, stearic acid salt, antioxidant, CNT (carbon nanotube) or graphene are all in powder form.

그리고, 폴리에틸렌 폼 칩 100 중량부에 대하여 분말 형태의 탈크 또는 점토 1 ~ 20중량부가 더 준비될 수 있다. 다만, 성형된 제품의 경량화 측면에서 혼합비율은 제한되어야 한다.In addition, 1 to 20 parts by weight of talc or clay in powder form may be further prepared with respect to 100 parts by weight of the polyethylene foam chip. However, the mixing ratio should be limited in terms of reducing the weight of the molded product.

수산화 알루미늄 대신에 수산화 마그네슘이 사용될 수 있다. 다만, 방염성을 향상시키거나 충격강동 등의 기계적 강도를 저하시키기 때문에 폴리에틸렌 폼 칩 100 중량부에 대하여 20 중량부를 초과해서는 안 된다.Magnesium hydroxide may be used instead of aluminum hydroxide. However, it should not exceed 20 parts by weight based on 100 parts by weight of the polyethylene foam chip because it improves flame retardancy or reduces mechanical strength such as impact strength.

CNT 대신에 그래핀이 사용될 수 있다. CNT가 페놀 수지에 균일하게 분포되어야 폴리에틸렌 폼 칩 외부에 대한 코팅이 더 유리하게 되고, 폴리에틸렌 폼 칩 간의 접착력을 강하게 유지시켜 강도를 높일 수 있게 된다. 특히, CNT가 첨가됨으로써 난연 뿐만 아니라 기계적 강도가 증가되고 전기적 특성에 의해 대전방지제 역할을 하게 될 수 있다. CNT는 전기저항성이 매우 낮기 때문에 열 발산이 쉽고 통전 효과가 있어 열에너지를 쉽게 발산, 방사시켜 나연 효과를 제공하게 된다. Graphene may be used instead of CNTs. When CNTs are uniformly distributed in the phenolic resin, the coating on the outside of the polyethylene foam chip becomes more advantageous, and the strength can be increased by maintaining strong adhesion between the polyethylene foam chips. In particular, by adding CNTs, not only flame retardancy but also mechanical strength may be increased, and may serve as an antistatic agent by electrical properties. Since CNT has very low electrical resistance, it is easy to dissipate heat and has a conduction effect.

산화방지제는 페놀계, 인계, 황계 및 아민계 산화방지제가 사용될 수 있다. 난연성 혼합물 준비 단계에서는 난연 용도 이외에도 산화방지제, 열안정제, 광안정제, 유기 및 무기 안료 등의 충진재가 더 추가될 수 있다.As the antioxidant, phenol-based, phosphorus-based, sulfur-based and amine-based antioxidants may be used. In the flame retardant mixture preparation step, in addition to the flame retardant use, fillers such as antioxidants, heat stabilizers, light stabilizers, organic and inorganic pigments may be further added.

< 페놀 수지 준비 단계 >< Phenolic resin preparation step >

위에서 준비된 폴리에틸렌 폼 칩과 난연성 혼합물을 혼합한 충진소재 100중량부에 대하여 페놀 수지는 3~10 중량부를 준비한다.3 to 10 parts by weight of the phenolic resin are prepared with respect to 100 parts by weight of the filling material in which the polyethylene foam chip and the flame retardant mixture prepared above are mixed.

< 성형 소재 혼련 단계 >< Molding material kneading step >

준비된 페놀 수지를 베이스로 하여 충진 소재인 폴리에틸렌 폼 칩, 삼산화 안티몬, 이황화 몰디브덴, 수산화 알루미늄, 스테아리산 염, 산화방지제, CNT를 일정 비율로 혼합한 후, 혼련기를 이용한 상온 또는 상온 이하의 온도 조건에서 25~35분 동안 혼련하여 성형 소재를 준비한다.After mixing the polyethylene foam chip, antimony trioxide, molybdenum disulfide, aluminum hydroxide, stearic acid salt, antioxidant, and CNT in a certain ratio using the prepared phenolic resin as a base, a temperature condition at room temperature or below room temperature using a kneader Prepare the molding material by kneading for 25 to 35 minutes at

< 난연성 보냉 물품 성형 단계 >< Forming flame retardant cold insulation article >

혼련된 성형 소재는 몰드를 사용하여 난연성 보냉 물품으로 성형된다.The kneaded molding material is molded into a flame-retardant cold-insulating article using a mold.

이때 난연성 보냉 물품은 LNG 이송 파이프를 감싸는 보냉재일 수 있다.In this case, the flame-retardant cold insulating article may be an insulating material surrounding the LNG transport pipe.

특히, 난연성 보냉 물품(100)은 보냉부(102)와 외각부(104)로 이루어질 수 있다. 보냉부(102)는 위에서 소개된 공정들을 통해 형성되며, 외각부(104)는 별도의 복합소재 제조공정을 통해서 보냉부(102)를 성형하기 이전에 섬유강화플라스틱으로 성형되는 것이 바람직하다. 이와 같이 섬유강화플라스틱 소재의 외각부(104)가 형성되는 경우, 외각부(104)와 보냉부(102)가 일체화되도록 하기 위해서 몰드에는 외각부(104)가 미리 배치되도록 한다.In particular, the flame-retardant cold insulating article 100 may be formed of the cold insulating part 102 and the outer shell part 104 . The cooling unit 102 is formed through the processes introduced above, and the outer shell unit 104 is preferably formed of fiber-reinforced plastic prior to molding the cooling unit 102 through a separate composite material manufacturing process. When the outer shell portion 104 of the fiber-reinforced plastic material is formed in this way, the outer shell portion 104 is pre-arranged in the mold so that the outer shell portion 104 and the cold storage portion 102 are integrated.

폴리에틸렌 폼 칩 100 중량부에 대하여, 삼산화 안티몬 10 중량부, 이황화 몰디브덴 2 중량부, 수산화 알루미늄 10 중량부, 스테아리산 염 2 중량부, 산화방지제 12 중량부, CNT 2 중량부를 준비한다.Based on 100 parts by weight of the polyethylene foam chip, 10 parts by weight of antimony trioxide, 2 parts by weight of molybdenum disulfide, 10 parts by weight of aluminum hydroxide, 2 parts by weight of stearic acid salt, 12 parts by weight of antioxidant, and 2 parts by weight of CNT are prepared.

준비된 폴리에틸렌 폼 칩, 삼산화 안티몬, 이황화 몰디브덴, 수산화 알루미늄, 스테아리산 염, 산화방지제, CNT를 혼합한 충진소재 100중량부에 대하여 페놀 수지는 5 중량부를 준비한다.5 parts by weight of phenolic resin is prepared with respect to 100 parts by weight of the filling material mixed with the prepared polyethylene foam chip, antimony trioxide, molybdenum disulfide, aluminum hydroxide, stearic acid salt, antioxidant, and CNT.

준비된 페놀 수지를 베이스로 하여 폴리에틸렌 폼 칩, 삼산화 안티몬, 이황화 몰디브덴, 수산화 알루미늄, 스테아리산 염, 산화방지제, CNT를 혼합하여, 혼련기에 넣어 30분 동안 혼련한다.Using the prepared phenol resin as a base, polyethylene foam chips, antimony trioxide, molybdenum disulfide, aluminum hydroxide, stearic acid salt, antioxidant, and CNT are mixed, put into a kneader and kneaded for 30 minutes.

이후, 몰드에 외각부(104)를 이루도록 미리 성형된 소재를 배치한 상태에서, 도 2에 도시된 바와 같은 난연성 보냉 물품(100)을 성형 제작하였다. 도2에 도시된 난연성 보냉 물품(100)은 LNG를 이송하는 LNG 데크 파이프 또는 LNG 벙커링 파이프의 외부를 감싸는 용도로 사용될 수 있다.Thereafter, in a state in which the pre-molded material was disposed to form the outer shell 104 in the mold, the flame retardant cold insulation article 100 as shown in FIG. 2 was molded and manufactured. The flame-retardant cooling article 100 shown in FIG. 2 may be used to wrap the outside of an LNG deck pipe or an LNG bunkering pipe for transporting LNG.

한편, 실시예 1에 준비된 페놀 수지를 베이스로 하여 폴리에틸렌 폼 칩, 삼산화 안티몬, 이황화 몰디브덴, 수산화 알루미늄, 스테아리산 염, 산화방지제, CNT를 혼합하고, 혼련기에 넣어 30분 동안 혼련한 후 시편(가로 세로 10 Cm, 두께 3T)을 제작하여 UL94 난연규정에 따른 실험을 하였고, 그 결과는 아래의 표1과 같았다.On the other hand, using the phenol resin prepared in Example 1 as a base, polyethylene foam chips, antimony trioxide, molybdenum disulfide, aluminum hydroxide, stearic acid salt, antioxidant, and CNT were mixed, put in a kneader and kneaded for 30 minutes, and then the specimen ( 10 Cm in width and 3T in thickness) were tested according to the UL94 flame retardant regulations, and the results are shown in Table 1 below.

가연성flammable 난연Flame Retardant 밀도(g/cc)Density (g/cc) 0.03 ~ 0.0350.03 to 0.035 인장강도(kg/㎠)Tensile strength (kg/㎠) 3.0~ 0.23.0 to 0.2 신율 (%)Elongation (%) 80~15080-150 압축강도(kg/㎠) Compressive strength (kg/㎠) 0.4~0.30.4~0.3 압축영구변형(%)Compression set (%) 55 인열강고(kg/㎝)Tear strength (kg/cm) 2.52.5 열전도율(kcal/mh℃)Thermal conductivity (kcal/mh℃) 0.03~0.0350.03-0.035

전술한 이 발명의 설명은 예시를 위한 것이며, 이 발명이 속하는 기술분야의 통상의 지식을 가진 자는 본 발명의 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 쉽게 변형이 가능하다는 것을 이해할 수 있을 것이다. 그러므로 이상에서 기술한 실시 예들은 모든 면에서 예시적인 것이며 한정적이 아닌 것으로 이해해야만 한다. 예를 들어, 단일형으로 설명되어 있는 각 구성요소는 분산되어 실시될 수도 있으며, 마찬가지로 분산된 것으로 설명되어 있는 구성요소들도 결합된 형태로 실시될 수 있다.The foregoing description of the present invention is for illustration, and those of ordinary skill in the art to which this invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and likewise components described as distributed may also be implemented in a combined form.

100 : 난연성 보냉 물품
102 : 보냉부
104 : 외각부
110 : 폴리에틸렌 폼 칩100: flame retardant cold storage article
102: cold storage unit
104: outer shell
110: polyethylene foam chip

Claims (6)

신발 밑창용으로 발포 성형된 후 폐기된 폴리에틸렌 폼을 길이 및/또는 폭이 5 ~ 10mm인 크기를 갖는 칩 형태로 파쇄하여 폴리에틸렌 폼 칩을 얻는 단계;
상기 단계에서 얻은 재활용 폴리에틸렌 폼 칩 100 중량부에 대하여, 삼산화 안티몬 1 ~ 30 중량부, 이황화 몰디브덴 1 ~ 3 중량부, 수산화 알루미늄 또는 수산화 마그네슘 1 ~ 20 중량부, 스테아리산 염 0.1 ~ 5 중량부, 산화방지제 0.1 ~ 20 중량부, CNT(탄소나노튜브) 또는 그래핀 0.1 ~ 3 중량부의 혼합비율로 이루어진 난연성 혼합물을 준비하는 단계;
상기 단계에서 준비된 재활용 폴리에틸렌 폼 칩과 난연성 혼합물이 혼합된 충진소재 100중량부에 대하여 3~10 중량부의 페놀 수지를 준비하는 단계;
상기 페놀 수지를 베이스로 하여 충진소재를 혼합한 후, 혼련기에 넣어 25~35분 동안 성형소재를 혼련하는 단계; 및
상기 단계에서 혼련된 성형소재를 몰드에 넣어 물품을 성형하는 성형단계; 를 포함하여 이루어지는 것을 특징으로 하는 재활용 폴리에틸렌 폼을 활용한 난연성 보냉 물품의 제조방법.
Crushing the discarded polyethylene foam after foam molding for shoe soles into chips having a size of 5 to 10 mm in length and/or width to obtain polyethylene foam chips;
Based on 100 parts by weight of the recycled polyethylene foam chip obtained in the above step, 1 to 30 parts by weight of antimony trioxide, 1 to 3 parts by weight of molybdenum disulfide, 1 to 20 parts by weight of aluminum hydroxide or magnesium hydroxide, 0.1 to 5 parts by weight of stearic acid salt , preparing a flame-retardant mixture consisting of 0.1 to 20 parts by weight of antioxidant, CNT (carbon nanotube) or 0.1 to 3 parts by weight of graphene;
Preparing 3 to 10 parts by weight of a phenolic resin with respect to 100 parts by weight of the filling material in which the recycled polyethylene foam chip and the flame retardant mixture prepared in the above step are mixed;
After mixing the filling material with the phenol resin as a base, kneading the molding material for 25 to 35 minutes in a kneader; and
A molding step of molding the article by putting the molding material kneaded in the above step into a mold; A method of manufacturing a flame retardant cold insulation article using recycled polyethylene foam, characterized in that it comprises a.
 제1항에 있어서,
상기 충진소재에는 상기 폴리에틸렌 폼 칩 100 중량부에 대하여 분말 형태의 탈크 또는 점토 1 ~ 20중량부가 더 혼합되는 것을 특징으로 하는 재활용 폴리에틸렌 폼을 활용한 난연성 보냉 물품의 제조방법.
The method of claim 1,
The method of manufacturing a flame retardant cold insulation article using recycled polyethylene foam, characterized in that the filling material is further mixed with 1 to 20 parts by weight of talc or clay in powder form with respect to 100 parts by weight of the polyethylene foam chip.
 제1항 또는 제2에 있어서,
상기 성형단계에서 성형되는 물품은 LNG 이송 파이프를 감싸는 보냉재이며, 상기 보냉재의 외각은 섬유강화플라스틱으로 피복된 상태가 되도록 하기 위해 상기 몰드에는 상기 보냉재의 외각을 이루는 외각부가 미리 배치되는 단계; 를 더 포함하여 이루어지는 것을 특징으로 하는 재활용 폴리에틸렌 폼을 활용한 난연성 보냉 물품의 제조방법.
3. The method of claim 1 or 2,
The article to be molded in the forming step is an insulation material surrounding the LNG transport pipe, and an outer shell forming the outer shell of the insulation material is previously disposed in the mold so that the outer shell of the insulation material is coated with fiber-reinforced plastic; A method of manufacturing a flame retardant cold insulation article using recycled polyethylene foam, characterized in that it further comprises a.
 제1항의 방법에 의해서 제조된 재활용 폴리에틸렌 폼을 활용한 난연성 보냉 물품.
A flame retardant cold insulation article using the recycled polyethylene foam manufactured by the method of claim 1.
 제2항의 방법에 의해서 제조된 재활용 폴리에틸렌 폼을 활용한 난연성 보냉 물품.
A flame retardant cold insulation article using the recycled polyethylene foam manufactured by the method of claim 2 .
 제3항의 방법에 의해서 제조된 재활용 폴리에틸렌 폼을 활용한 난연성 보냉 물품.
A flame-retardant cold storage article using the recycled polyethylene foam manufactured by the method of claim 3 .
KR1020200159764A 2020-11-25 2020-11-25 Insulating material reuseing polyethylene foam and the manufacturing method thereof KR102349448B1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990004827U (en) * 1997-07-05 1999-02-05 시명선 Carver structure for gas pipe cooling of LNG carrier
KR20040005035A (en) * 2002-07-08 2004-01-16 (주) 나노텍 Recycling Phenol Foam Complex
KR200359096Y1 (en) 2004-05-28 2004-08-16 주식회사 광스틸 A building panel using recycled poly ethylene foam
KR20040087100A (en) * 2003-04-04 2004-10-13 시대무역(주) Flame Retardant Non-Crosslinking Polyethylene Foam Composition
JP2006199760A (en) * 2005-01-18 2006-08-03 Chuo Bussan:Kk Method for producing polyethylene-based flame-retardant resin foam, and tubular thermal insulation material and thermal insulation piping using the tubular thermal insulation material
KR20090010856U (en) 2008-04-21 2009-10-26 김정수 A structure keeping warm insulation using non-crosslinking polyethylene foam

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990004827U (en) * 1997-07-05 1999-02-05 시명선 Carver structure for gas pipe cooling of LNG carrier
KR20040005035A (en) * 2002-07-08 2004-01-16 (주) 나노텍 Recycling Phenol Foam Complex
KR20040087100A (en) * 2003-04-04 2004-10-13 시대무역(주) Flame Retardant Non-Crosslinking Polyethylene Foam Composition
KR200359096Y1 (en) 2004-05-28 2004-08-16 주식회사 광스틸 A building panel using recycled poly ethylene foam
JP2006199760A (en) * 2005-01-18 2006-08-03 Chuo Bussan:Kk Method for producing polyethylene-based flame-retardant resin foam, and tubular thermal insulation material and thermal insulation piping using the tubular thermal insulation material
KR20090010856U (en) 2008-04-21 2009-10-26 김정수 A structure keeping warm insulation using non-crosslinking polyethylene foam

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