KR20190043432A - Light Weight Fiber Reinforced Composite Board and Manufacturing Method Thereof - Google Patents
Light Weight Fiber Reinforced Composite Board and Manufacturing Method Thereof Download PDFInfo
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- KR20190043432A KR20190043432A KR1020170135502A KR20170135502A KR20190043432A KR 20190043432 A KR20190043432 A KR 20190043432A KR 1020170135502 A KR1020170135502 A KR 1020170135502A KR 20170135502 A KR20170135502 A KR 20170135502A KR 20190043432 A KR20190043432 A KR 20190043432A
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/047—Reinforcing macromolecular compounds with loose or coherent fibrous material with mixed fibrous material
- C08J5/048—Macromolecular compound to be reinforced also in fibrous form
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
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Abstract
Description
본 발명은 경량섬유강화복합보드 및 그 제조방법에 관한 것으로서, 특히 인장강도 및 굴곡강도 등의 물성이 우수하면서 경량의 복합보드를 제조할 수 있는 경량섬유강화복합보드의 제조방법에 관한 것이다.The present invention relates to a lightweight fiber-reinforced composite board and a method of manufacturing the same, and more particularly, to a method of manufacturing a lightweight fiber-reinforced composite board capable of producing a lightweight composite board having excellent physical properties such as tensile strength and bending strength.
산업의 발달에 따라 원유 고갈 및 환경오염에 따른 바이오 및 재활용이 가능한 친환경 소재에 대한 요구가 점차 커지고 있다. 자동차 산업에서도 자동차의 연비 개선을 위한 경량화 소재 개발과 환경오염을 예방할 수 있는 바이오 또는 천연소재를 이용한 재활용이 가능한 열가소성 섬유복합소재들에 대한 소재의 개발이 급증하고 있다.As the industry develops, there is a growing demand for eco-friendly materials that can be biodegraded and recycled due to oil depletion and environmental pollution. In the automobile industry, development of lightweight materials for improving fuel efficiency of automobiles and materials for thermoplastic fiber composite materials that can be recycled using bio or natural materials to prevent environmental pollution are rapidly increasing.
종래에는 섬유강화복합재료로 내열 및 강성이 우수한 천연섬유, 유리 섬유, 탄소 섬유, 아리미드 섬유 등의 보강 섬유에 접착성을 가지는 기지재로 에폭시 수지, 불포화에스테르계 수지, 펜올계 수지 등의 가교 또는 경화성 수지를 함침 또는 적층시키는 방법에 의해 금속을 대체하는 산업용 용도로 경량 섬유강화복합재료들의 개발들이 주류를 이루었다. 그러나 이와 같은 소재들은 기지재 수지의 함침, 가교 및 경화성 소재의 사용에 의한 고밀도 구조로 금속에 비해 경량화를 이루었으나 흡음성, 보온성, 충격흡수성 등의 기능성을 요구하는 저밀도의 경량화 제품에의 적용 어려움, 가교 및 경화 특성으로 인한 재활용의 어려움에 따른 환경문제 등의 문제점을 내포하고 있다.Background Art [0002] Conventionally, as a fiber-reinforced composite material, a base material having adhesiveness to reinforcing fibers such as natural fibers, glass fibers, carbon fibers, and aramid fibers excellent in heat resistance and rigidity is coated with an epoxy resin, an unsaturated ester resin, Or lightweight fiber-reinforced composites for industrial applications in which metal is replaced by a method of impregnating or laminating a curable resin. However, these materials are lightweight compared to metal due to the high density structure due to impregnation, cross-linking and curing of base resin. However, they are difficult to apply to low-density lightweight products requiring sound-absorbing properties, Environmental problems due to difficulty in recycling due to crosslinking and curing characteristics, and the like.
또한, 경량화 및 친환경을 위한 자동차 내장재용 열가소성 섬유강화복합소재의 제조에 있어서도 보강섬유로 내열성 및 강성이 우수한 천연섬유, 무기섬유, 고융점 열가소성 섬유 등이 사용되고, 접착성 기지재 섬유로 낮은 비중에 의한 경량화 및 우수한 가공성을 가지는 폴리에틸렌, 폴리프로필렌, 저융점 폴리아미드, 저융점 폴리에스테르 등의 열가소성 유기섬유들을 사용하여 개발이 이루어지고 있으나, 그들 열가소성 기지재 섬유들의 낮은 강성 및 내열성으로 인해 자동차 내장재용 소재가 요구하는 신뢰성을 만족 못시키는 문제로 인해 응용에 제한적이고, 가교 및 열경화성 반응을 가지는 수지들을 첨가하는 방법에 의해 주로 응용되어 지고 있다. 이러한 재료들은 경량화 목적으로 높은 비중을 가지는 금속 등을 대체하는 소재로 기계적 물성에는 만족하지만 다양한 제품형태로의 변형 시 허용될 수 있는 변형의 폭이 작고, 경량화의 한계점, 재활용이 불가능하여 환경오염의 문제점 등을 여전히 내포하고 있다.In addition, natural fibers, inorganic fibers and high melting point thermoplastic fibers, which are excellent in heat resistance and rigidity, are used as reinforcing fibers in the production of thermoplastic fiber reinforced composite materials for automobile interior materials for lighter weight and eco-friendliness. And thermoplastic organic fibers such as polyethylene, polypropylene, low-melting-point polyamide and low-melting-point polyester having light weight and excellent processability have been developed. However, due to the low rigidity and heat resistance of the thermoplastic- Which is limited to applications due to the problem of not satisfying the reliability required by the material, and is mainly applied by a method of adding resins having cross-linking and thermosetting reaction. These materials are substitutes for metals with a high specific gravity for lightweight purposes. They are satisfactory in mechanical properties, but they are small in the width of deformation that can be tolerated when deformed into a variety of product forms, are limited in weight and can not be recycled. Problems still remain.
이와 같은 종래의 문제점을 해결하기 위한 본 발명은 인장강도 및 굴곡강도 등의 물성이 우수하면서 경량의 복합보드를 제조할 수 있는 경량섬유강화복합보드 및 그 제조방법을 제공하는 것을 그 목적으로 한다.In order to solve the above problems, the present invention provides a lightweight fiber-reinforced composite board capable of producing a lightweight composite board having excellent properties such as tensile strength and bending strength, and a method of manufacturing the same.
상기와 같은 목적을 달성하기 위한 본 발명은,According to an aspect of the present invention,
열가소성 유기섬유 및 천연섬유를 이용하여 경량섬유강화복합보드의 제조방법에 있어서,A method of manufacturing a lightweight fiber-reinforced composite board using thermoplastic organic fibers and natural fibers,
상기 열가소성 유기섬유는 폴리프로필렌(PP) 섬유와 폴리에틸렌 테레프탈레이트(PET)로 이루어지고,Wherein the thermoplastic organic fiber is made of polypropylene (PP) fiber and polyethylene terephthalate (PET)
상기 천연섬유는 케냐프(Kenaf)섬유로 이루어지는 것을 특징으로 하는 경량섬유강화복합보드의 제조방법을 제공한다.Wherein the natural fiber is made of Kenaf fiber. The present invention also provides a method for manufacturing a lightweight fiber-reinforced composite board.
특히, 상기 열가소성 유기섬유 및 상기 천연섬유를 카딩한 웹을 적층한 후 니들펀칭하고, 가열분위기 내에서 압착하여 섬유간에 계면접착시키는 것이 좋다.In particular, it is preferable that the thermoplastic organic fibers and the web on which the natural fibers are carded are laminated, needle punched, and compressed in a heating atmosphere to cause interfacial adhesion between the fibers.
상기 폴리프로필렌 섬유는 접착성 폴리프로필렌 섬유, 고결정성 폴리프로필렌 섬유 중 선택된 1종 이상으로 이루어질 수 있다.The polypropylene fiber may be composed of at least one selected from an adhesive polypropylene fiber and a highly crystalline polypropylene fiber.
그리고 상기 폴리프로필렌 섬유, 상기 폴리에틸렌 테레프탈레이트 섬유 및 상기 케냐프 섬유를 60:30:10의 중량비로 혼합하여 카딩하는 것이 좋다. 또한, 상기 폴리프로필렌 섬유, 상기 폴리에틸렌 테레프탈레이트 섬유 및 상기 케냐프 섬유를 50:30:20의 중량비로 혼합하여 카딩하는 것이 좋다.The polypropylene fiber, the polyethylene terephthalate fiber, and the kenaf fiber may be mixed and carded at a weight ratio of 60:30:10. The polypropylene fiber, the polyethylene terephthalate fiber and the kenaf fiber may be mixed and carded at a weight ratio of 50:30:20.
상기 폴리에틸렌 테레프탈레이트 섬유(PET)는 저융점 폴리에틸렌 테레프탈레이트 섬유와 고탄성 폴리에틸렌 테레프탈레이트 섬유로 이루어지는 것이 바람직하다. 특히, 상기 저융점 폴리에틸렌 테레프탈레이트 섬유, 상기 고탄성 폴리에틸렌 테레프탈레이트 섬유 및 상기 케냐프 섬유를 55:40:5의 중량비로 혼합하여 카딩하는 것이 좋다.The polyethylene terephthalate fiber (PET) is preferably composed of a low melting point polyethylene terephthalate fiber and a high-elasticity polyethylene terephthalate fiber. In particular, the low melting point polyethylene terephthalate fiber, the high elastic polyethylene terephthalate fiber and the kenaf fiber are preferably mixed and carded at a weight ratio of 55: 40: 5.
아울러, 본 발명은 상기의 제조방법에 의해 제조된 것을 특징으로 하는 경량섬유강화복합보드를 제공한다.In addition, the present invention provides a lightweight fiber-reinforced composite board, which is manufactured by the above-described manufacturing method.
본 발명의 경량섬유강화복합보드의 제조방법은 인장강도 및 굴곡강도 등의 물성이 우수하면서 경량의 복합보드를 제조할 수 있는 효과가 있다.The method for producing a lightweight fiber-reinforced composite board of the present invention has the effect of producing a lightweight composite board with excellent physical properties such as tensile strength and flexural strength.
이하, 본 발명의 경량섬유강화복합보드 및 그 제조방법에 대해 상세히 설명하면 다음과 같다.Hereinafter, the lightweight fiber-reinforced composite board of the present invention and its manufacturing method will be described in detail.
본 발명의 경량섬유강화복합보드의 제조방법은 열가소성 유기섬유 및 천연섬유를 카딩하여 웹을 형성하고, 형성된 웹들을 적층한 후 니들펀칭하고, 가열분위기 내에서 압착하여 섬유간에 계면접착시켜 제조한다.The method for producing a lightweight fiber-reinforced composite board of the present invention comprises forming a web by coating thermoplastic organic fibers and natural fibers, laminating the formed webs, needle punching, pressing in a heating atmosphere and interfacial bonding between fibers.
상기 열가소성 유기섬유는 천연섬유와 미세 다공성 구조를 형성하고, 천연섬유와의 계면접착하여 인장강도 및 굴곡강도 등의 물성을 향상시키기 위한 것으로서, 폴리프로필렌(PP) 섬유와 폴리에틸렌 테레프탈레이트(PET)를 함께 사용한다.The thermoplastic organic fibers are made of polypropylene (PP) fibers and polyethylene terephthalate (PET) to improve physical properties such as tensile strength and flexural strength by forming a microporous structure with natural fibers and interfacial bonding with natural fibers. Used together.
특히 폴리프로필렌 섬유는 접착성 폴리프로필렌 섬유, 고결정성 폴리프로필렌 섬유 중 선택된 1종 이상을 사용할 수 있다. Particularly, as the polypropylene fiber, at least one selected from an adhesive polypropylene fiber and a highly crystalline polypropylene fiber can be used.
그리고 상기 폴리에틸렌 테레프탈레이트는 인장강도 등의 물성 및 신율을 향상시키기 위한 것이다. 상기 폴리프로필렌 섬유와 상기 천연섬유로서 케냐프를 이용하여 경량섬유강화복합보드를 제작할 경우 신율이 2~3%정도로서 낮은 문제가 있으나, 폴리에틸렌 테레프탈레이트를 함께 혼용하여 카딩하여 웹을 형성할 경우 신율이 10% 이상을 개선되는 이점이 있다.The polyethylene terephthalate is intended to improve physical properties such as tensile strength and elongation. When the lightweight fiber-reinforced composite board is produced by using the polypropylene fiber and the kenaf fiber as the natural fiber, the elongation is as low as about 2 to 3%. However, when the web is formed by using polyethylene terephthalate together, There is an advantage of improving over 10%.
특히, 상기 폴리에틸렌 테레프탈레이트 섬유(PET)는 굴곡강도, 인장강도 뿐만 아니라 양호한 신율을 확보하기 위해 저융점 폴리에틸렌 테레프탈레이트 섬유와 고탄성 폴리에틸렌 테레프탈레이트 섬유를 함께 사용하는 것이 바람직하다. Particularly, it is preferable that the polyethylene terephthalate fiber (PET) is used together with a low-melting polyethylene terephthalate fiber and a high-elasticity polyethylene terephthalate fiber in order to secure not only bending strength and tensile strength but also good elongation.
상기 천연섬유로서 열가소성 유기섬유와의 계면접착성이 우수하고 양호한 인장강도 및 굴곡강도 등의 물성을 가지는 케냐프, 황마(jute) 및 아마를 사용할 수 있다. 특히, 상기 천연섬유로서 인장강도 및 굴곡강도가 우수하게 평가된 케냐프를 사용하는 것이 바람직하다.As natural fibers, kenaf, jute and flax, which have excellent interfacial adhesion with thermoplastic organic fibers and have good tensile strength and flexural strength, can be used. Particularly, it is preferable to use kenaf which is excellent in tensile strength and bending strength as the natural fiber.
상기 폴리프로필렌 섬유, 상기 폴리에틸렌 테레프탈레이트 섬유 및 상기 천연섬유를 60:30:10의 중량비 또는 50:30:20의 중량비로 혼합하여 카딩하는 것이 좋다. 상기 폴리프로필렌 섬유 및 상기 폴리에틸렌 테레프탈레이트 섬유가 많이 혼합될 경우 인장강도 등의 물성은 우수하나 미세 공극이 적어 경량화에 한계가 있고, 상기 천연섬유가 많이 혼합될 경우 상기 폴리프로필렌 섬유 등과의 서로 접착이 잘 되지 않아 인장강도 및 굴곡강도 등의 물성이 좋지 못하다.The polypropylene fiber, the polyethylene terephthalate fiber and the natural fiber may be mixed and carded at a weight ratio of 60:30:10 or 50:30:20. When the polypropylene fibers and the polyethylene terephthalate fibers are mixed with each other in a large amount, physical properties such as tensile strength are excellent. However, there is a limit to the weight reduction due to a small number of micropores. When a large amount of the natural fibers are mixed, And the physical properties such as tensile strength and flexural strength are not good.
한편, 굴곡강도, 인장강도 등의 물성 뿐만 아니라 우수한 신율을 가진 섬유강화복합보드를 제조하기 위하여 상기 저융점 폴리에틸렌 테레프탈레이트 섬유, 상기 고탄성 폴리에틸렌 테레프탈레이트 섬유 및 상기 케냐프 섬유를 55:40:5의 중량비로 혼합하여 카딩하는 것이 좋다.On the other hand, in order to produce a fiber-reinforced composite board having excellent properties such as flexural strength and tensile strength as well as excellent elongation, the low-melting polyethylene terephthalate fiber, the high-elastic polyethylene terephthalate fiber and the kenaf fiber were mixed in a ratio of 55: 40: 5 It is preferable to mix them in a weight ratio.
상기 폴리프로필렌 섬유, 상기 폴리에틸렌 테레프탈레이트 섬유 및 상기 케냐프섬유는 60~80mm의 길이로 절단하여 카딩한다. 섬유장을 60mm 미만으로 절단할 경우 인장강도 및 굴곡강도 등이 좋지 못하고, 80mm 초과인 경우 폴리프로필렌 섬유, 폴리에틸렌 테레프탈레이트 섬유 및 케냐프 섬유가 균일하게 카딩되지 않을 우려가 있는 문제가 있다.The polypropylene fiber, the polyethylene terephthalate fiber and the kenaf fiber are cut to a length of 60 to 80 mm and carded. When the fiber length is less than 60 mm, the tensile strength and the flexural strength are not good. When the length is more than 80 mm, the polypropylene fiber, the polyethylene terephthalate fiber and the kenaf fiber may not be uniformly carded.
다음으로 상기 열가소성 유기섬유 및 상기 천연섬유를 카딩하여 웹을 형성하고, 형성된 웹을 최종 경량섬유강화복합보드의 두께에 따라 적층하고, 니들펀칭한다.Next, the thermoplastic organic fibers and the natural fibers are carded to form a web, the formed web is laminated according to the thickness of the final lightweight fiber-reinforced composite board, and needle punching is performed.
그리고, 상기 니들펀칭된 웹을 가열분위기 내에서 압착하여 섬유간에 계면접착하여 경량섬유강화복합보드를 제조한다. 이때 가열온도는 240~260℃인 것이 바람직하다. 가열온도가 240℃ 미만일 경우 상기 폴리에틸렌 테레프탈레이트가 녹지 않아 계면 접착성이 좋지 못하여 인장강도 및 굴곡강도가 좋지 못하고, 260℃ 초과일 경우 미세기공의 공극율이 저하되는 문제가 있다.Then, the needle-punched web is pressed in a heating atmosphere to make interfacial adhesion between fibers to produce a lightweight fiber-reinforced composite board. The heating temperature is preferably 240 to 260 ° C. If the heating temperature is less than 240 ° C, the polyethylene terephthalate does not melt and the interfacial adhesion is poor, so that the tensile strength and the bending strength are not good. When the heating temperature is higher than 260 ° C, the porosity of the micropores is lowered.
이와 같이 제조된 경량섬유강화복합보드는 인장강도 및 굴곡강도 등의 물성이 우수하고, 미세기공의 공극율이 높아 경량화를 실현할 수 있는 이점이 있다. 본 발명의 경량섬유강화복합보드는 자동차의 내장재 등으로 널리 사용될 수 있다.The lightweight fiber-reinforced composite board thus produced has excellent physical properties such as tensile strength and flexural strength, and has an advantage of being lightweight due to high porosity of micropores. The lightweight fiber-reinforced composite board of the present invention can be widely used as an interior material of an automobile.
다음으로, 본 발명의 경량섬유강화복합보드 및 그 제조방법을 실시예를 들어 상세히 설명하면 다음과 같고, 본 발명의 권리범위는 하기의 실시예에 한정되는 것은 아니다.Next, the lightweight fiber-reinforced composite board of the present invention and its manufacturing method will be described in detail with reference to the following examples, but the scope of the present invention is not limited to the following examples.
[실시예][Example]
열가소성 섬유로서, 일반 폴리프로필렌 섬유(8De, 64mm), 접착성 폴리프로필렌 섬유(6De, 64mm), 고결정성 폴리프로필렌 섬유(6De, 64mm)와, 천연섬유로서 케냐프(kenaf)(80mm), 황마(jute)(80mm), 아마(flax)(80mm)를 표 1과 같이 혼합한 상태에서 카딩한 후 170℃에서 5분동안 열처리하여 복합보드를 제조하였다. (8De, 64mm), adhesive polypropylene fiber (6De, 64mm), highly crystalline polypropylene fiber (6De, 64mm) as the thermoplastic fiber, kenaf (80mm) as the natural fiber, jute (80 mm) and flax (80 mm) were mixed as shown in Table 1, and then heat treated at 170 ° C for 5 minutes to prepare a composite board.
(N)Average flexural strength
(N)
표 1에서 확인되는 바와 같이 천연섬유의 경유 케냐프가 황마 및 아마에 비하여 인장강도 등의 물성이 우수함을 확인할 수 있다. 그리고 실시예 1-3 내지 1-6의 복합보드의 인장강도가 608.65N 이상으로 우수하게 평가되었다.As can be seen in Table 1, it can be confirmed that the durability of the natural fiber of kenaf is superior to that of jute and flax in physical properties such as tensile strength. The tensile strength of the composite boards of Examples 1-3 to 1-6 was evaluated to be 608.65N or more.
천연섬유 중 케냐프 섬유를 기준으로 굴곡강도를 비교해 보았을 때, 일반PP섬유와 혼합된 보드의 굴곡강도도 우수하였으나, 접착성 PP와 고결정 PP섬유와 혼합하였을 때 더욱 굴곡강도가 우수한 경향을 보였다.Comparing the flexural strengths of the natural fibers with those of the kenaf fibers, the flexural strength of the boards mixed with the ordinary PP fibers was also excellent, but the flexural strength tended to be higher when the adhesive PPs were mixed with the high crystalline PP fibers .
한편, 실시예 1-1 및 실시예 1-3의 복합보드에 대하여 신율을 측정하였고, 그 결과는 표 2와 같다.On the other hand, the elongation was measured for the composite board of Example 1-1 and Example 1-3, and the results are shown in Table 2.
표 2에서 확인되는 바와 같이, 천연섬유로서 케냐프 섬유를 기준으로 일반PP 및 접착성 PP를 각 혼합하여 제조한 복합보드에 대한 신율이 3.1% 미만으로 낮게 측정되었다.As can be seen in Table 2, the elongation was measured as low as less than 3.1% for a composite board prepared by mixing common PP and adhesive PP on the basis of kenaf fibers as natural fibers.
이에 신율과 굴곡강도를 높이기 위해 표 3과 같이 PET를 적용하여 분석을 진행하였다. PET섬유로서는 LM(low melting) PET 및 고탄성 PET를 사용하였다. LM PET는 도레이케미칼의 LM(low melting) PET 섬유로서 코어와 시스부분으로 이루어져 있으며, 코어부분은 일반 PET, 시스부분은 저융점 PET로 구성된 섬유이다. 그리고 고탄성 PET섬유는 도레이케미칼의 Hollow PET섬유로서 섬유 단면부 중앙에 빈공간이 있는 중공 섬유이며, 이 중공으로 인하여 고탄성 특성을 가진다.In order to increase the elongation and bending strength, PET was applied as shown in Table 3. As the PET fiber, LM (low melting) PET and high elasticity PET were used. LM PET is LM (low melting) PET fiber of TORAY CHEMICAL. It consists of core and sheath parts. The core part is made of ordinary PET and the sheath part is made of low melting point PET. The high-elasticity PET fiber is Hollow PET fiber of TORAY CHEMICAL, which is a hollow fiber with hollow space at the center of the fiber cross-section and has high elasticity due to the hollow.
섬유종류 및 배합비(wt%)
Fiber type and mixing ratio (wt%)
(Mpa)Flexural strength
(Mpa)
(MPa)The tensile strength
(MPa)
(%)Elongation
(%)
50:20:30MPP: PET:
50:20:30
55:40:5LM PET: PET:
55: 40: 5
표 3에서 보는 바와 같이, 고탄성 PET를 적용할 경우 일반 PET를 적용하는 것보다 인장강도는 약간 낮았지만 신율과 굴곡강도는 높아지는 것을 볼 수 있다.As shown in Table 3, when the high-elasticity PET is applied, the tensile strength is slightly lower than that of the general PET, but the elongation and flexural strength are increased.
Claims (8)
상기 열가소성 유기섬유는 폴리프로필렌(PP) 섬유 또는 폴리에틸렌 테레프탈레이트(PET)로 이루어지고,
상기 천연섬유는 케냐프(Kenaf)섬유로 이루어지는 것을 특징으로 하는 경량섬유강화복합보드의 제조방법
A method of manufacturing a lightweight fiber-reinforced composite board using thermoplastic organic fibers and natural fibers,
Wherein the thermoplastic organic fiber is made of polypropylene (PP) fiber or polyethylene terephthalate (PET)
Wherein the natural fibers are made of Kenaf fibers.
상기 열가소성 유기섬유 및 상기 천연섬유를 카딩한 웹을 적층한 후 니들펀칭하고, 가열분위기 내에서 압착하여 섬유간에 계면접착시키는 것을 특징으로 하는 경량섬유강화복합보드의 제조방법.
The method according to claim 1,
Wherein the thermoplastic organic fibers and the web on which the natural fibers are carded are laminated and then needle punched and compressed in a heating atmosphere to cause interfacial adhesion between the fibers.
상기 폴리프로필렌 섬유는 접착성 폴리프로필렌 섬유, 고결정성 폴리프로필렌 섬유 중 선택된 1종 이상으로 이루어지는 것을 특징으로 하는 경량섬유강화복합보드의 제조방법.
3. The method of claim 2,
Wherein the polypropylene fiber is composed of at least one selected from an adhesive polypropylene fiber and a highly crystalline polypropylene fiber.
상기 폴리프로필렌 섬유, 상기 폴리에틸렌 테레프탈레이트 섬유 및 상기 케냐프 섬유를 60:30:10의 중량비로 혼합하여 카딩하는 것을 특징으로 하는 경량섬유강화복합보드의 제조방법.
3. The method of claim 2,
Wherein the polypropylene fiber, the polyethylene terephthalate fiber, and the kenaf fiber are mixed and carded at a weight ratio of 60:30:10.
상기 폴리프로필렌 섬유, 상기 폴리에틸렌 테레프탈레이트 섬유 및 상기 케냐프 섬유를 50:30:20의 중량비로 혼합하여 카딩하는 것을 특징으로 하는 경량섬유강화복합보드의 제조방법.
3. The method of claim 2,
Wherein the polypropylene fiber, the polyethylene terephthalate fiber, and the kenaf fiber are mixed and carded at a weight ratio of 50:30:20.
상기 폴리에틸렌 테레프탈레이트 섬유(PET)는 저융점 폴리에틸렌 테레프탈레이트 섬유와 고탄성 폴리에틸렌 테레프탈레이트 섬유로 이루어지는 것을 특징으로 하는 경량섬유강화복합보드의 제조방법.
3. The method of claim 2,
Wherein the polyethylene terephthalate fiber (PET) is composed of a low melting point polyethylene terephthalate fiber and a high-elasticity polyethylene terephthalate fiber.
상기 저융점 폴리에틸렌 테레프탈레이트 섬유, 상기 고탄성 폴리에틸렌 테레프탈레이트 섬유 및 상기 케냐프 섬유를 55:40:5의 중량비로 혼합하여 카딩하는 것을 특징으로 하는 경량섬유강화복합보드의 제조방법.
The method according to claim 6,
Wherein the low melting point polyethylene terephthalate fiber, the high elastic polyethylene terephthalate fiber and the kenaf fiber are mixed at a weight ratio of 55: 40: 5 and carded.
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| KR20150065423A (en) * | 2013-12-05 | 2015-06-15 | 한일이화 주식회사 | Light-weight, multi-layered composite substrate and method of making the same |
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| KR100824695B1 (en) * | 2006-10-25 | 2008-04-24 | (주)에이피엠티 | Lightweight laminated sheet and its manufacturing method |
| KR101279522B1 (en) * | 2013-01-02 | 2013-07-05 | 가온전선 주식회사 | Natural fiber reinforced composite board for vehicle headliner of multi-layers structure using thermoplastic matrix fibers of high crystalline and bonding to improve heat resistance and strength, and method for preparing the board |
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