KR20170052131A - Vacuum-packed waste rigid polyurethane and manufacturing method thereof - Google Patents
Vacuum-packed waste rigid polyurethane and manufacturing method thereof Download PDFInfo
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- KR20170052131A KR20170052131A KR1020150154194A KR20150154194A KR20170052131A KR 20170052131 A KR20170052131 A KR 20170052131A KR 1020150154194 A KR1020150154194 A KR 1020150154194A KR 20150154194 A KR20150154194 A KR 20150154194A KR 20170052131 A KR20170052131 A KR 20170052131A
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- polyurethane foam
- rigid polyurethane
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- 239000002699 waste material Substances 0.000 title claims abstract description 44
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 19
- 239000004814 polyurethane Substances 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 91
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 91
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000003566 sealing material Substances 0.000 claims abstract description 14
- 239000011810 insulating material Substances 0.000 claims abstract description 11
- 239000011358 absorbing material Substances 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 9
- 239000008188 pellet Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 2
- 238000007666 vacuum forming Methods 0.000 claims description 2
- 239000012212 insulator Substances 0.000 claims 1
- 230000000704 physical effect Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 10
- 238000010276 construction Methods 0.000 description 6
- 238000010298 pulverizing process Methods 0.000 description 6
- 238000004064 recycling Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 239000011381 foam concrete Substances 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
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- -1 polyethylene Polymers 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000004634 thermosetting polymer Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 238000009461 vacuum packaging Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 239000000835 fiber Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/22—After-treatment of expandable particles; Forming foamed products
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/88—Insulating elements for both heat and sound
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/30—Polymeric waste or recycled polymer
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
- E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
-
- 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)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Acoustics & Sound (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Electromagnetism (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Description
본 발명은 진공포장된 폐 경질 폴리우레탄 폼 및 그 제조방법에 관한 것으로, 보다 상세하게는 폐기되는 냉장고에서 선별 회수되거나 경질 폴리우레탄 폼의 생산과정에서 버려지는 폐 경질 폴리우레탄 폼을 수거하여 분쇄 및 진공포장한 후, 그 진공포장된 상태의 폐 경질 폴리우레탄 폼을 그대로 바닥충격음 완충재, 흡음재 또는 단열재로 재활용 할 수 있는 기술에 관한 것이다. The present invention relates to a vacuum packed, rigid polyurethane foam and a method for producing the same. More particularly, the present invention relates to a vacuum packaged waste rigid polyurethane foam which is selectively withdrawn from a refrigerator to be discarded or collected during the production of a rigid polyurethane foam, The present invention relates to a technique for reusing waste hard polyurethane foam in a vacuum packed state as a floor impact sound absorbing material, a sound absorbing material, or a heat insulating material after vacuum packing.
경질 폴리우레탄 폼은 열경화성 고분자로써 주로 냉장고, 냉동차 그리고 건축물의 단열재 또는 흡음재로 사용되고 있다. 그런데 이러한 경질 폴리우레탄 폼은 생산과정에서 일정한 가공작업을 수행한 후 여분의 것이 그대로 버려지는바, 그 양이 상당히 많을 뿐만 아니라, 또한 폐 냉장고, 건축폐기물 등의 처리 과정에서 폐 경질 폴리우레탄 폼이 폐기물로 대량으로 방출되고 있어, 폐 경질 폴리우레탄 폼의 재활용에 대한 관심이 높아지고 있다.Rigid polyurethane foam is a thermosetting polymer and is mainly used as a heat insulation material or sound absorbing material in refrigerators, refrigerators, and buildings. However, since the rigid polyurethane foam is subjected to a certain processing operation during the production process and the excess is discarded as it is, the amount thereof is considerably large. In addition, in the processing of the waste refrigerator and the construction waste, the hard polyurethane foam And is being released in large quantities as wastes, and there is a growing interest in the recycling of rigid polyurethane foams.
이에, 다양한 측면에서 폐 경질 폴리우레탄 폼을 재활용하고자 하는 시도가 있었으나, 열경화성 고분자인 폐 경질 폴리우레탄 폼을 재용융하여 단순 재활용시키기가 불가능하다.Accordingly, there has been an attempt to recycle the rigid polyurethane foam in various aspects, but it is impossible to re-melt the waste rigid polyurethane foam, which is a thermosetting polymer, for simple recycling.
또한, 폐 경질 폴리우레탄 폼은 발포체이므로 그 부피의 증대로 인하여 처리시 어려움이 있다.Further, since the rigid polyurethane foam is a foamed material, it is difficult to process it due to an increase in its volume.
폐 경질 폴리우레탄 폼의 재활용과 관련된 선행기술로서는, 폐 경질 폴리우레탄 폼을 파쇄하여 얻은 폐 폴리우레탄 칩을 몰드에 투입하고, 상기 몰드 내부에 폴리올과 폴리이소시아네이트를 포함하는 반응성 프리믹스를 주입하여 가압성형한 재생 폴리우레탄 폼의 제조방법이 공지된바 있으나, 그 성형과정에서 폴리올과 폴리이소시아네이트의 반응에 의하여 폴리우레탄 생성물을 유도하는 화학적 공정이 필수적으로 개재됨으로써 재활용 공정의 경제성 측면에서 취약한 단점을 가지고 있다(특허문헌 1).
Background Art [0002] As a prior art related to the recycling of rigid polyurethane foams, a waste polyurethane chip obtained by crushing a rigid polyurethane foam is introduced into a mold, a reactive premix containing a polyol and a polyisocyanate is injected into the mold, A method of producing a reclaimed polyurethane foam is known but a chemical process for inducing a polyurethane product by the reaction between a polyol and a polyisocyanate is essentially interposed in the process of forming the recycled polyurethane foam, (Patent Document 1).
또한, 폐 경질 폴리우레탄 폼을 분쇄한 후 호퍼에서 접착제와 혼합 및 배출한 다음, 이를 금형에 넣고 가온 압착성형하여 건축자재를 제조하는 폐 경질 폴리우레탄 폼의 재생방법도 알려져 있으나, 여전히 그 성형과정에서 우레탄계, 에폭시계 또는 아크릴계 접착제를 사용해야 하는 문제점이 있다(특허문헌 2).
Also, there is known a recycling method of a rigid polyurethane foam in which a waste rigid polyurethane foam is pulverized, mixed with an adhesive in a hopper, discharged and molded into a mold, followed by hot pressing to produce a building material. However, Based, epoxy-based, or acrylic-based adhesive is required to be used (Patent Document 2).
그리고 폐 폴리우레탄을 이용하여 단열재용 경질 폴리우레탄 폼을 제조하는 방법도 공지되었는바, 이는 폐 폴리우레탄을 일정한 크기로 쇄절 또는 분쇄하는 분쇄공정과 규소, 폐 폴리우레탄 및 미량의 첨가제로 인하여 응집된 혼합물을 연속 성형제조하여 경화건조시킴으로써 얻어지는 것인데, 난연성을 향상시키고자 규소를 이용하여 폐 폴리우레탄의 칩 표면을 코팅하는 공정이 수반되며, 난연성 단열재로서 시공하기 위해서는 제조된 경질 폴리우레탄 폼 단열재의 표면을 코팅제로 후처리 하여야 하는 단점이 있다(특허문헌 3).
It is also known that a rigid polyurethane foam for insulation is manufactured by using a waste polyurethane. This is because the waste polyurethane is subjected to a pulverizing process for shredding or pulverizing the waste polyurethane to a predetermined size and a pulverizing process for pulverizing the pulverized polyurethane by agglomeration due to silicon, waste polyurethane and trace additive The mixture is continuously formed and cured and dried. In order to improve the flame retardancy, a step of coating the surface of the chip of the waste polyurethane by using silicon is performed. In order to perform the construction as a flame-retardant insulating material, the surface of the hard polyurethane foam insulation It is disadvantageous to post-treat with a coating agent (Patent Document 3).
또한, 폐 경질 폴리우레탄 폼을 이용한 자동차용 흡음재를 개발하기 위하여 폐 폴리우레탄 폼 조각을 폴리올 및 메틸렌클로라이드로 표면처리한 다음, 폴리에틸렌테레프탈레이트 섬유 사이에 분포시켜 압축성형하는 방법도 공지되어 있으나(특허문헌 4), 기타 혼합물 없이 버려지는 폐 경질 폴리우레탄 폼만을 가공하여 그대로 흡음재 또는 단열재로 시공한 예는 아직까지 알려진바 없다.
In order to develop a sound absorbing material for automobiles using a rigid polyurethane foam, there has been known a method of surface-treating a waste polyurethane foam piece with polyol and methylene chloride, and then distributing the polyethylene foam in the space between the polyethylene terephthalate fibers to perform compression molding Document 4), and examples of the construction of waste rigid polyurethane foam that has been discarded without any other admixture, as such, as a sound absorbing material or an insulation material is not yet known.
따라서 본 발명자는 경질 폴리우레탄 폼의 생산과정에서 버려지는, 또는 경질 폴리우레탄 폼이 적용된 제품을 폐기처리 하는 과정에서 수거한 폐 경질 폴리우레탄 폼으로부터 첨가제를 사용하는 등의 특별한 화학적 처리공정 없이 간단한 성형과정을 통하여 경질 폴리우레탄 폼으로 제조할 수 있으면, 이를 통상의 경질 폴리우레탄 폼으로 상용화된 바닥충격음 완충재, 흡음재 또는 단열재와 동일한 용도로 시공할 수 있음에 착안하여 본 발명을 완성하기에 이르렀다.
Accordingly, the present inventors have found that, in the process of discarding a hard polyurethane foam produced in the process of discarding a product to which a hard polyurethane foam is applied or a hard polyurethane foam collected in the course of producing the rigid polyurethane foam, The present invention has been completed based on the fact that it can be made into a rigid polyurethane foam through a process such as a floor impact sound damping material, a sound absorbing material or a heat insulating material which is commercialized as a rigid polyurethane foam.
본 발명은 상기와 같은 문제점을 감안하여 안출된 것으로, 본 발명의 목적은 경질 폴리우레탄 제조시 버려지는, 또는 경질 폴리우레탄 폼이 적용된 제품을 폐기처리 하는 과정에서 수거한 폐 경질 폴리우레탄 폼을 재활용하여 통상의 상용화된 경질 우레탄과 동등 수준 이상의 물성을 나타낼 수 있는 진공포장된 폐 경질 폴리우레탄 폼 및 그 제조방법을 제공하고, 이를 그대로 바닥충격음 완충재, 흡음재 또는 단열재의 시공에 적용하고자 하는 것이다. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a method for recycling waste rigid polyurethane foam collected in the process of discarding a hard polyurethane foam, The present invention provides a vacuum packed, rigid polyurethane foam capable of exhibiting physical properties equal to or higher than that of a commercially available hard urethane, and a method of manufacturing the same, and is intended to be applied to the construction of a floor impact sound absorbing material, a sound absorbing material or a heat insulating material.
본 발명의 일 측면은 입자형의 폐 경질 폴리우레탄 폼; 및 상기 입자형의 폐 경질 폴리우레탄 폼을 수용하는 밀봉재를 포함하는 진공포장된 폐 경질 폴리우레탄 폼을 제공한다.One aspect of the present invention relates to a particulate, rigid polyurethane foam; And a sealing material for accommodating the rigid polyurethane foam in the form of particles. The present invention also provides a vacuum packaged rigid polyurethane foam.
상기 입자형의 폐 경질 폴리우레탄 폼은 분말상, 펠렛상 및 이들의 혼합물의 형태 중에서 선택된 1종 이상의 것을 특징으로 한다. The particulate rigid polyurethane foam is characterized by at least one selected from the group consisting of powder, pellet, and mixture thereof.
상기 입자형의 폐 경질 폴리우레탄 폼의 평균 입경은 0.1~10 mm인 것을 특징으로 한다.The particulate hard polyurethane foam has an average particle diameter of 0.1 to 10 mm.
상기 밀봉재는 알루미늄 증착 필름, 알루미늄 박, 증기차단막(vapor barrier) 및 플라스틱 필름으로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 한다.The sealing material may be at least one selected from the group consisting of an aluminum deposited film, an aluminum foil, a vapor barrier film, and a plastic film.
상기 진공포장된 폐 경질 폴리우레탄 폼은 바닥충격음 완충재용인 것을 특징으로 한다.The vacuum packaged rigid polyurethane foam is characterized by being a floor impact sound cushioning material.
상기 진공포장된 폐 경질 폴리우레탄 폼은 흡음재용인 것을 특징으로 한다.The vacuum packaged waste hard polyurethane foam is characterized by being a material for a sound absorbing material.
상기 진공포장된 폐 경질 폴리우레탄 폼은 단열재용인 것을 특징으로 한다.The vacuum packaged rigid polyurethane foam is characterized in that it is for insulation.
본 발명의 다른 측면은 입자형의 폐 경질 폴리우레탄 폼을 밀봉재에 수용하여 진공성형하는 단계;를 포함하는 진공포장된 폐 경질 폴리우레탄의 제조방법을 제공한다.Another aspect of the present invention provides a vacuum packaged waste hard polyurethane manufacturing method comprising the steps of accommodating a waste rigid polyurethane foam in a particulate form in a sealing material and vacuum forming the bag.
상기 입자형의 폐 경질 폴리우레탄 폼은 (i) 폐 경질 폴리우레탄 폼을 분쇄하여 수득되거나; 또는 (ii) 경질 폴리우레탄 폼 단열재를 포함하는 폐 가전의 해체 공정에 의해 선별 및 분쇄되어 폐기된 단열재를 수거하여 수득된 것을 특징으로 한다.The particulate rigid polyurethane foam is obtained by (i) pulverizing a rigid polyurethane foam; Or (ii) picking up and grinding the waste heat insulating material by a dismantling process of the waste electrical appliance including the hard polyurethane foam insulating material and collecting the discarded heat insulating material.
본 발명에 따르면, 폐 경질 폴리우레탄 폼을 재활용함으로써 바닥충격음 완충재, 흡음재 또는 단열재로서 종래 통상의 상용화된 경질 폴리우레탄 대비 동등 수준 이상의 물성을 나타내는 진공포장된 폐 경질 폴리우레탄을 제공할 수 있다.According to the present invention, it is possible to provide a vacuum packed waste hard polyurethane exhibiting physical properties equal to or higher than those of conventional conventional hard polyurethane as a floor impact sound cushioning material, a sound absorbing material, or a heat insulating material by recycling waste hard polyurethane foam.
또한, 본 발명에 따르면, 입자형의 폐 경질 폴리우레탄을 진공포장하는 간단한 공정만으로 폐 경질 폴리우레탄 폼을 재활용할 수 있는 진공포장된 폐 경질 폴리우레탄 폼의 제조방법을 제공할 수 있다.Further, according to the present invention, it is possible to provide a method of manufacturing a vacuum packaged waste rigid polyurethane foam which can recycle the rigid polyurethane foam by a simple process of vacuum-packaging the rigid, rigid polyurethane in the form of particles.
도 1의 (a)는 바닥충격음 완충재를 사용하지 않고 시공한 주택 바닥의 단면 모식도, 도 1의 (b)는 비교예 1의 발포 스티렌계 바닥충격음 완충재를 사용하여 시공한 주택 바닥의 단면 모식도, 도 1의 (c)는 실시예 1의 폐 경질 폴리우레탄 폼을 사용하여 시공한 주택 바닥의 단면 모식도.
도 2의 (a)는 경량 충격음(light-weight impact sound) 레벨을 나타낸 그래프, 도 2의 (b)는 중량 충격음(heavy-weight impact sound) 레벨을 나타낸 그래프.FIG. 1 (a) is a cross-sectional view of a floor of a house constructed without using a floor impact sound cushioning material, FIG. 1 (b) is a cross-sectional view of a floor of a house constructed using the foamed styrene floor impact sound cushioning material of Comparative Example 1, Fig. 1 (c) is a cross-sectional view of a floor of a house constructed using the rigid polyurethane foam of Example 1; Fig.
FIG. 2 (a) is a graph showing a light-weight impact sound level, and FIG. 2 (b) is a graph showing a heavy-weight impact sound level.
이하에서는 본 발명에 따른 진공포장된 폐 경질 폴리우레탄 폼 및 그 제조방법에 관하여 첨부된 도면과 함께 구체적으로 설명한다.Hereinafter, a vacuum packaged waste rigid polyurethane foam according to the present invention and a method for producing the same will be described in detail with reference to the accompanying drawings.
본 발명의 일 측면은 입자형의 폐 경질 폴리우레탄 폼; 및 상기 입자형의 폐 경질 폴리우레탄 폼을 수용하는 밀봉재;를 포함하는 진공포장된 폐 경질 폴리우레탄 폼을 제공한다.One aspect of the present invention relates to a particulate, rigid polyurethane foam; And a sealing material for receiving the rigid polyurethane foam in the form of particles. The present invention also provides a vacuum packaged rigid polyurethane foam.
일 구현예에 따르면, 상기 입자의 평균 입경은 0.1~10 mm인 것이 바람직한바, 상기 분말의 평균 입경이 0.1 mm 미만이면 강도와 같은 기계적 물성이 저하될 수 있고 밀도가 높아질 수 있으며, 10 mm를 초과하면 동탄성계수, 손실계수와 같은 물성이 좋지 않아 흡음성과 단열성이 저하될 수 있다. According to one embodiment, the average particle diameter of the particles is preferably 0.1 to 10 mm. When the average particle diameter of the powder is less than 0.1 mm, the mechanical properties such as strength may be deteriorated and the density may be increased. If it exceeds, the physical properties such as the dynamic elastic modulus and the loss coefficient may not be good, so that the sound absorbing property and the heat insulating property may be deteriorated.
본 발명에서는 0.1~10 mm의 입자 중 0.1~3 mm의 입자를 분말이라 하고, 3 mm 초과 10 mm 이하의 입자를 펠렛이라 할 수 있다.
In the present invention, particles of 0.1 to 3 mm in diameter of 0.1 to 10 mm are referred to as powder, and particles of more than 3 mm and less than 10 mm can be referred to as pellets.
또한, 상기 밀봉재는 공기 불투과성와 불투수성을 나타내므로, 흡음 또는 단열 효과를 향상시킬 수 있어 바람직하다.Further, since the sealing material exhibits air impermeability and impermeability, it is preferable to improve sound absorption or heat insulating effect.
아울러 상기 밀봉재는 소재적인 특성을 고려하면 알루미늄 증착 필름, 알루미늄 박, 증기차단막 및 플라스틱 필름로 이루어진 군으로부터 선택된 1종 이상의 것일 수 있다. 상기 알루미늄 증착 필름은 알루미늄이 표면에 증착된 알루미늄 복합체 형태일 수 있고, 상기 증기차단막(vapor barrier)은 알루미늄 코팅 필름 내부에 내화용 실을 포함하는 필름일 수 있다. In addition, the sealing material may be at least one selected from the group consisting of an aluminum deposited film, an aluminum foil, a vapor barrier film, and a plastic film in consideration of material characteristics. The aluminum evaporated film may be in the form of an aluminum composite on which aluminum is deposited on the surface, and the vapor barrier may be a film containing a refractory seal inside the aluminum coated film.
상기 밀봉재는 상기 입자형의 폐 경질 폴리우레탄 폼을 수용하여 진공포장된 상태의 것인데, 상기 입자형의 폐 경질 폴리우레탄 폼은 그 성상이 분말상 또는 펠렛상과 같은 입자형이어도 특유의 기공을 여전히 갖고 있으므로 흡음재 또는 단열재 시공에 그대로 적용할 수 있다.
The sealing material is in a vacuum packed state in which the particulate rigid polyurethane foam is accommodated. The particulate rigid polyurethane foam is still in particulate form, such as powder or pellet, Therefore, it can be applied to the construction of sound absorbing material or insulation.
본 발명의 다른 측면은 입자형의 폐 경질 폴리우레탄 폼을 밀봉재에 수용하여 진공성형하는 단계;를 포함하는 진공포장된 폐 경질 폴리우레탄 폼의 제조방법을 제공한다.Another aspect of the present invention provides a method of manufacturing a vacuum packaged waste hard polyurethane foam, comprising the step of vacuum-molding a waste rigid polyurethane foam in the form of particles in a sealing material.
또한, 로울러를 이용하여 상기 폐 경질 폴리우레탄 폼의 두께와 표면을 일정하게 하는 단계를 추가로 포함할 수 있다.The method may further include the step of making the thickness and the surface of the rigid polyurethane foam constant by using a roller.
상기 입자형의 폐 경질 폴리우레탄 폼은 (i) 폐 경질 폴리우레탄 폼을 분쇄하여 수득되거나; 또는 (ii) 경질 폴리우레탄 폼 단열재를 포함하는 폐 가전, 예컨대, 폐 냉장고의 해체 공정에 의해 선별 및 분쇄되어 폐기된 단열재를 수거하여 수득될 수 있다.
The particulate rigid polyurethane foam is obtained by (i) pulverizing a rigid polyurethane foam; Or (ii) collecting the waste heat insulating material selected and crushed by a waste household appliance including a hard polyurethane foam insulation, for example, a waste refrigerator.
실시예Example
이하에서 실시예 등을 통해 본 발명을 더욱 상세히 설명하고자 하며, 다만 이하에 실시예 등에 의해 본 발명의 범위와 내용이 축소되거나 제한되어 해석될 수 없다. 또한, 이하의 실시예를 포함한 본 발명의 개시 내용에 기초한다면, 구체적으로 실험 결과가 제시되지 않은 본 발명을 통상의 기술자가 용이하게 실시할 수 있음은 명백하다.
Hereinafter, the present invention will be described in more detail with reference to Examples and the like, but the scope and content of the present invention can not be construed to be limited or limited by the following Examples. In addition, it is apparent that, based on the teachings of the present invention including the following examples, those skilled in the art can easily carry out the present invention in which experimental results are not specifically shown.
실시예 1Example 1
폐 경질 폴리우레탄 폼을 수거하여 이물질을 제거한 후, 상기 이물질이 제거된 폐 경질 폴리우레탄 폼을 분쇄하여 평균크기 0.3 mm의 분말상 폐 경질 폴리우레탄 폼을 수득하였다. The waste hard polyurethane foam was collected to remove foreign matter, and then the waste hard polyurethane foam from which the foreign substance was removed was pulverized to obtain a powdery rigid polyurethane foam having an average size of 0.3 mm.
그 후, 밀봉재로서 알루미늄박을 사용하여 진공성형한 후 상기 밀봉재 내부에 상기 분말상의 폐 경질 폴리우레탄 폼이 수용된 형태의 진공포장된 폐 경질 폴리우레탄 폼을 제조하였다.Thereafter, after vacuum molding using an aluminum foil as a sealing material, a vacuum packed waste rigid polyurethane foam in which the powdery rigid polyurethane foam was contained in the sealing material was prepared.
또한, 상기 폐 경질 우레탄 폼의 두께와 표면을 일정하게 만들기 위하여 미리 30 mm 로 간격을 벌려 고정한 두 개의 고무 로울러 사이를 수회 통과시켜 제품의 완성도를 높이는 작업을 수행하였다.
Further, in order to make the thickness and the surface of the rigid urethane foam to be constant, a work of increasing the completeness of the product was performed by passing between two rubber rollers which were previously fixed at intervals of 30 mm.
실시예 2Example 2
실시예 1과 동일한 방법으로 폐 경질 폴리우레탄을 제조하되, 평균크기 8 mm의 펠렛상 폐 경질 폴리우레탄을 수득한 후, 진공포장된 폐 경질 폴리우레탄 폼을 제조하였다.A hard-packed, rigid polyurethane foam was prepared in the same manner as in Example 1 except that a pellet-like rigid polyurethane foam having an average size of 8 mm was obtained.
또한, 상기 폐 경질 우레탄 폼의 두께와 표면을 일정하게 만들기 위하여 미리 30 mm로 간격을 벌려 고정한 두 개의 고무 로울러 사이를 수회 통과시켜 제품의 완성도를 높이는 작업을 수행 하였다.
Further, in order to make the thickness and the surface of the rigid urethane foam to be constant, a work of increasing the completeness of the product was performed by passing between two rubber rollers which were previously fixed with a gap of 30 mm.
실시예 3Example 3
실시예 1 및 실시예 2에서 각각 제조된 분말상 폐 경질 폴리우레탄과 펠렛상 경질 폴리우레탄을 동일한 중량으로 혼합하여 진공포장된 폐 경질 폴리우레탄 폼을 제조하였다.The powdery rigid polyurethane foam prepared in Examples 1 and 2 and the rigid polyurethane foamed pellets were mixed in equal weight to prepare a vacuum packed rigid polyurethane foam.
또한, 상기 폐 경질 우레탄 폼의 두께와 표면을 일정하게 만들기 위하여 미리 30 mm 로 간격을 벌려 고정한 두 개의 고무 로울러 사이를 수회 통과시켜 제품의 완성도를 높이는 작업을 수행 하였다.
Further, in order to make the thickness and the surface of the rigid urethane foam to be constant, a work of increasing the completeness of the product was performed by passing between two rubber rollers which were previously fixed with a gap of 30 mm.
비교예 1Comparative Example 1
상용의 발포 스티렌계 바닥충격음 완충재(발포성 폴리스티렌 소재 소리앤 제품, (주)건배산업)를 구매하여 준비하였다.
A commercially available foamed styrene floor impact sound cushioning material (Sound & products of foamable polystyrene, manufactured by Toei Industry Co., Ltd.) was prepared and prepared.
도 1의 (a)는 바닥충격음 완충재를 사용하지 않고 시공한 주택 바닥의 단면 모식도이고, 도 1의 (b)는 비교예 1의 발포 스티렌계 바닥충격음 완충재를 사용하여 시공한 주택 바닥의 단면 모식도이며, 도 1의 (c)는 실시예 1의 폐 경질 폴리우레탄 폼을 사용하여 시공한 주택 바닥의 단면 모식도이다.FIG. 1 (a) is a sectional view of a floor of a house constructed without using a floor impact sound cushioning material, and FIG. 1 (b) is a sectional view of a floor of a house constructed using the foamed styrene floor impact sound cushioning material of Comparative Example 1 And FIG. 1 (c) is a schematic cross-sectional view of the floor of a house constructed using the rigid polyurethane foam of Example 1.
상기 바닥은 하부로부터 바닥슬라브(4), 경량 기포콘크리트(3), 마감몰타르(2) 및 최종마감재(1)가 순차적으로 적층되어 시공될 수 있으며, 바닥충격음 완충재(10, 20)은 상기 바닥슬라브(4)와 경량 기포콘크리트(3) 사이에 위치할 수 있다.The bottom floor impact
상기 단면도에서 하부의 바닥 콘크리트 슬라브(4)의 두께는 200 mm이고, 비교예 1과 실시예 1의 바닥충격음 완충재(10, 20)는 30 mm이며, 경량 기포콘크리트(3)의 40 mm이며, 마감몰타르(2)의 두께는 40 mm이다.
The thickness of the bottom
상기 도 1의 (a), (b) 및 (c)에 나타난 바와 같이 시공된 주택 바닥에 대해서 KS F2863-2(표준 중량 충격원에 대한 바닥 충격음 차단성능 평가법)에 따라 차음성능 실험을 실시하였다.As shown in FIGS. 1 (a), 1 (b), and 1 (c), a sound insulation performance test was conducted according to KS F2863-2 (floor impact sound isolation performance evaluation method for standard weight impact source) .
도 2의 (a)는 경량 충격음(light-weight impact sound) 레벨을 나타낸 그래프이고, 도 2의 (b)는 중량 충격음(heavy-weight impact sound) 레벨을 나타낸 그래프로서, 본 발명에 따른 실시예 1의 폐 경질 폴리우레탄 폼은 바닥충격음 완충재를 사용하지 않은 경우보다 음압레벨(sound pressure level)이 낮아 차음성능이 우수하며, 비교예 1과 같은 상용의 발포 스티렌계 바닥충격음 완충재와 비교하여, 경량 충격음과 중량 충격음에 대해 모두 동등 수준 이상의 소음방지 성능을 나타내는 것을 알 수 있다.
FIG. 2 (a) is a graph showing the light-weight impact sound level, and FIG. 2 (b) is a graph showing the heavy-weight impact sound level, 1 of the present invention is superior in sound insulating performance because sound pressure level is lower than that of a floor impact sound cushioning material without using a floor impact sound cushioning material and compared with the foamed styrene floor impact sound cushioning material of Comparative Example 1, It can be seen that both of the impact noise and the heavy impact sound are equivalent to or higher than the equivalent level.
또한, 실시예 1 내지 3의 동탄성계수와 손실계수를 측정하여, 바닥충격음 차단성능 기준(관련법 및 조항: 주택건설 기준 등에 관한 규정 제14조의 3항 및 4항)에 부합하는지 여부를 확인하였다.In addition, the dynamic modulus of elasticity and loss coefficient of Examples 1 to 3 were measured, and it was confirmed whether or not it meets the floor impact sound blocking performance standard (Article 14 and
그 결과, 표 1에 나타난 바와 같이, 실시예 1 내지 3의 폐 경질 폴리우레탄 폼은 바닥충격음 차단성능 기준을 만족하며, 동탄성계수와 손실계수가 상기 바닥충격음 차단성능 기준 범위 내에서도 낮은 수치를 나타내는 바, 차음 성능이 더욱 우수한 것을 알 수 있다.
As a result, as shown in Table 1, the rigid polyurethane foams of Examples 1 to 3 satisfied the floor impact sound isolation performance standard, and exhibited low dynamic modulus and loss coefficient even within the floor impact sound blocking performance standard Bar, and sound insulation performance are further improved.
또한, 상기 실시예 1에서 제조된 진공포장된 폐 경질 폴리우레탄은 0.022(±2)의 열전도율(W/mK, 평균온도 20±5 ℃)을 나타내어 비교예 1의 사용의 발포스티렌계 바닥충격음 완충재와 동등 수준 이상의 단열효능을 나타내는 것을 알 수 있다.
Further, the vacuum packed waste hard polyurethane prepared in Example 1 exhibited a thermal conductivity (W / mK, average temperature: 20 ± 5 ° C) of 0.022 (± 2), indicating that the foamed styrene- Which is higher than or equal to the heat insulating property.
이상 살펴본 바와 같이, 본 발명에 따른 폐 경질 폴리우레탄은 흡음성과 단열성이 우수하며, 상용의 경질 폴리우레탄과 동등 수준 이상의 물성을 나타내는 바, 폐 경질 폴리우레탄의 바닥충격음 완충재, 흡음재, 단열재로서의 재활용 가능성을 확인할 수 있다.
As described above, the rigid polyurethane according to the present invention is excellent in sound absorption and heat insulation, exhibits physical properties equal to or higher than that of a rigid polyurethane of the present invention, and can be recycled as a floor impact sound cushioning material, sound absorbing material, can confirm.
위에서 기재한 구현예 외에도, 본 발명이 속하는 기술분야의 당업자라면 본 발명의 출원 당시의 기술 상식 및 본 명세서의 기재 내용에 기초하여, 본 발명이 그 기술적 사상이나 필수적 특징을 변경하지 않고서 다른 구체적인 형태로 실시될 수 있다는 점은 자명하다.It will be apparent to those skilled in the art that the present invention is not limited to the embodiments described above and that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined by the appended claims. As shown in FIG.
본 발명의 범위는 상기의 상세한 설명보다는 후술할 특허청구범위에 의하여 나타내어지며, 특허청구범위의 의미 및 범위 그리고 그 등가개념으로부터 도출되는 모든 변경 또는 변형된 형태가 본 발명의 범위에 포함되는 것으로 해석되어야 한다.It will be understood by those skilled in the art that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention as defined by the appended claims and their equivalents. .
1: 최종 마감재
2: 마감 몰타르
3: 경량 기포콘크리트
4: 바닥 콘크리트 슬라브
10: 발포 스티렌계 바닥충격음 완충재
20: 폐 경질 폴리우레탄 폼 바닥충격음 완충재1: Final finish
2: Finishing mortar
3: Lightweight foam concrete
4: Floor concrete slab
10: foamed styrene floor impact sound cushioning material
20: Lung rigid polyurethane foam floor impact sound cushioning material
Claims (9)
상기 입자형의 폐 경질 폴리우레탄 폼을 수용하는 밀봉재를 포함하는 진공포장된 폐 경질 폴리우레탄 폼.Particulate, rigid polyurethane foam; And
A vacuum packaged, rigid, rigid polyurethane foam comprising a sealing material for receiving the rigid polyurethane foam in the form of particles.
상기 입자형의 폐 경질 폴리우레탄 폼은 분말상, 펠렛상 및 이들의 혼합물의 형태 중에서 선택된 1종 이상인 것을 특징으로 하는 진공포장된 폐 경질 폴리우레탄 폼.The method according to claim 1,
Wherein the particulate waste rigid polyurethane foam is at least one selected from the group consisting of powder, pellet, and mixture thereof.
상기 입자형의 폐 경질 폴리우레탄 폼의 평균 입경은 0.1~10 mm인 것을 특징으로 하는 진공포장된 폐 경질 폴리우레탄 폼.The method according to claim 1,
Wherein the average particle diameter of the particulate waste rigid polyurethane foam is 0.1 to 10 mm.
상기 밀봉재는 알루미늄 증착 필름, 알루미늄 박, 증기차단막(vapor barrier) 및 플라스틱 필름으로 이루어진 군으로부터 선택된 1종 이상의 것을 특징으로 하는 진공포장된 폐 경질 폴리우레탄 폼.The method according to claim 1,
Wherein the sealing material is at least one selected from the group consisting of an aluminum deposited film, an aluminum foil, a vapor barrier, and a plastic film.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460991A (en) * | 2016-02-24 | 2017-12-12 | 张日龙 | A kind of building panel |
| KR20190028040A (en) * | 2017-09-08 | 2019-03-18 | 에스와이화학 주식회사 | Preparation method of heat shinkable film-packed waste rigid polyurethane foam |
| CN111941632A (en) * | 2020-08-25 | 2020-11-17 | 重庆君秀科技有限公司 | Energy-saving self-heat-insulation prefabricated wall body for building |
| CN112282495A (en) * | 2020-10-23 | 2021-01-29 | 陈�峰 | Noise-reduction protection partition wall prefabricated wallboard |
| CN112281691A (en) * | 2020-10-23 | 2021-01-29 | 陈�峰 | Highway sound insulation advertisement wallboard |
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2015
- 2015-11-04 KR KR1020150154194A patent/KR20170052131A/en not_active Application Discontinuation
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460991A (en) * | 2016-02-24 | 2017-12-12 | 张日龙 | A kind of building panel |
| KR20190028040A (en) * | 2017-09-08 | 2019-03-18 | 에스와이화학 주식회사 | Preparation method of heat shinkable film-packed waste rigid polyurethane foam |
| CN111941632A (en) * | 2020-08-25 | 2020-11-17 | 重庆君秀科技有限公司 | Energy-saving self-heat-insulation prefabricated wall body for building |
| CN112282495A (en) * | 2020-10-23 | 2021-01-29 | 陈�峰 | Noise-reduction protection partition wall prefabricated wallboard |
| CN112281691A (en) * | 2020-10-23 | 2021-01-29 | 陈�峰 | Highway sound insulation advertisement wallboard |
| CN112282495B (en) * | 2020-10-23 | 2022-06-17 | 长沙市维创环保工程设备有限公司 | Noise-reduction protection partition wall prefabricated wallboard |
| CN112281691B (en) * | 2020-10-23 | 2022-12-02 | 陈�峰 | Highway sound insulation advertisement wallboard |
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