KR101436820B1 - Hybrid composition materials with reduced weight and enhanced crash performances applied aramid hybrid mat - Google Patents

Hybrid composition materials with reduced weight and enhanced crash performances applied aramid hybrid mat Download PDF

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KR101436820B1
KR101436820B1 KR1020120109910A KR20120109910A KR101436820B1 KR 101436820 B1 KR101436820 B1 KR 101436820B1 KR 1020120109910 A KR1020120109910 A KR 1020120109910A KR 20120109910 A KR20120109910 A KR 20120109910A KR 101436820 B1 KR101436820 B1 KR 101436820B1
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hybrid
mat
aramid
gmt
composite material
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KR20140046509A (en
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김명원
표희진
박민호
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한화첨단소재 주식회사
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M17/00—Producing multi-layer textile fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/10—Fibres of continuous length
    • B32B2305/20—Fibres of continuous length in the form of a non-woven mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2377/00—Polyamides
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
    • D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/12—Vehicles

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Reinforced Plastic Materials (AREA)
  • Woven Fabrics (AREA)
  • Laminated Bodies (AREA)

Abstract

본 발명은 아라미드 하이브리드 매트를 이용하여 중량은 줄이고 충돌성능은 향상시킨 복합소재에 관한 것으로, 열가소성수지; 상기 열가소성수지와 성형 결합되어 있는 하이브리드매트;로 구성된 복합소재로서; 상기 하이브리드매트는 아라미드 섬유를 경사로 하고, 유리섬유를 위사로 하여 직조된 패브릭(Fabric)과; 상기 패브릭을 기존 GMT에서 사용된 글래스 화이버 넌-우번 매트(Glass Fiber Non-Woven Mat)에 적층 후 융합하여 이루어진 것을 특징으로 하는 아라미드 하이브리드 매트를 이용하여 중량은 줄이고 충돌성능은 향상시킨 복합소재를 제공한다.
본 발명에 따르면, 아라미드 섬유를 하이브리드 매트로 만들고, 이를 GMT와 복합시킴으로써 성형 작업성을 향상시키고, 물성 분포를 균일하게 할 수 있어 저중량 설계가 가능하며, 인장강도 증대를 통한 충돌저항성도 높이는 효과를 얻을 수 있다.The present invention relates to a composite material which is reduced in weight and improved in impact performance by using an aramid hybrid mat, and comprises a thermoplastic resin; And a hybrid mat molded and bonded to the thermoplastic resin; The hybrid mat comprises: a fabric woven with a glass fiber as a weave, the aramid fiber being inclined; The fabric is laminated on a glass fiber non-woven mat used in conventional GMT, and then fused. The composite material is reduced in weight and improved in impact performance by using an aramid hybrid mat do.
According to the present invention, by forming aramid fibers into hybrid mats and combining them with GMT, the molding workability can be improved, the physical property distribution can be made uniform, low weight design is possible, and the impact resistance can be increased by increasing the tensile strength Can be obtained.

Description

아라미드 하이브리드 매트를 이용하여 중량은 줄이고 충돌성능은 향상시킨 복합소재{HYBRID COMPOSITION MATERIALS WITH REDUCED WEIGHT AND ENHANCED CRASH PERFORMANCES APPLIED ARAMID HYBRID MAT}HYBRID COMPOSITION MATERIALS WITH REDUCED WEIGHT AND ENHANCED CRASH PERFORMANCE APPLIED ARAMID HYBRID MAT USING ARIMID HYBRID MAT

본 발명은 아라미드 하이브리드 매트를 이용하여 중량은 줄이고 충돌성능은 향상시킨 복합소재에 관한 것으로, 보다 상세하게는 자동차용 범퍼빔 소재로 인장강도가 우수한 아라미드 섬유(Aramid Fiber)와, 내충격성 및 성형성이 우수한 GMT(Glass fiber Mat reinforced Thermoplastic)를 융합하되 성형시 작업성 저하를 막고, 물성 산포를 균일하게 하여 인장강도와 인장탄성율을 높이고, 이를 통해 고속 충돌에 대한 충격흡수성은 향상시키되 중량은 줄일 수 있도록 한 복합소재에 관한 것이다.
More particularly, the present invention relates to an aramid fiber having excellent tensile strength as a bumper beam material for automobiles, and an aramid fiber having excellent impact resistance and moldability It is possible to improve the tensile strength and tensile elastic modulus by improving the impact absorbability against high speed collision, but it is possible to reduce the weight by fusion of this superior GMT (Glass fiber Mat reinforced thermoplastic) And the like.

일반적으로, 차량용 범퍼빔은 차량의 저속 충돌시 탄성적으로 변형하여 차량의 물리적인 손상을 최소화하기 위한 것으로서, 다른 자동차나 고정체와의 충돌시 그 충격을 흡수하여 탑승자의 안전을 도모하며, 동시에 차체의 변형을 최소화 할 수 있도록 자동차 전,후방에 배치되는 완충수단이다.Generally, a vehicle bumper beam is elastically deformed at a low-speed collision of a vehicle to minimize the physical damage of the vehicle. In the collision between the vehicle bumper beam and another vehicle or a fixed body, It is a shock absorber disposed on the front and rear of the vehicle so as to minimize the deformation of the vehicle body.

이러한 범퍼빔은 강도를 높일 경우 중량과 비용이 급증하고, 중량 및 비용을 줄이게 되면 강도가 낮아져 그 기능을 충분히 수행할 수 없게 된다.Such a bumper beam increases in weight and cost when the strength is increased, and decreases in strength and weight when the weight and cost are reduced, so that the bumper beam can not perform its function sufficiently.

이에, 경량화 소재를 사용하면서 강도는 높인 GMT(Glass fiber Mat reinforced Thermoplastic)가 개발된 바 있다.Accordingly, a glass fiber mat reinforced thermoplastic (GMT) having increased strength while using lightweight materials has been developed.

여기에서, 상기 GMT는 범용수지인 폴리프로필렌(Polypropylene) 수지와 글래스 화이버 매트(Glass fiber Mat) 강화재로 이루어진 복합소재로서, 특히 T-Die를 통해 압출된 용융상태의 폴리프로필렌과 글래스 화이버 넌-우번 매트(Glass fiber non-woven Mat)가 직접 함침되어 수지와의 결합력이 우수하고, 글래스(Glass) 자체의 강도가 매트(Mat)상으로 보강되어 우수한 강도를 보이며, 경량성, 디자인 자유도는 물론 열가소성 수지에서 기인하는 높은 생산성, 재활용성 등의 특징을 갖는 소재이다.Here, the GMT is a composite material composed of a polypropylene resin and a glass fiber mat reinforcement material, which are general resins, and particularly, a molten state polypropylene extruded through a T-die and a glass fiber- The glass fiber non-woven mat is directly impregnated to have excellent bonding strength with the resin, and the strength of the glass itself is reinforced with a mat (Mat) to show excellent strength, light weight, freedom of design, It is a material having characteristics such as high productivity and recyclability due to resin.

이와 같은 GMT는 경량화가 가능하고, 충돌 에너지의 흡수성이 우수하며, 디자인 자유도가 향상되고, 조립성은 물론 내부식성, 강성, 복원성, 차음성, 제진성, 탄성 내충격성 등이 우수하여 범퍼빔, 시트백(Seat Back), 언더커버(Undercover) 등에 사용될 차세대 복합소재로서 주목 받고 있다.The GMT can be lightweight, has excellent impact energy absorbability, has improved design freedom, and has excellent corrosion resistance, rigidity, stability, sound insulation, vibration damping property, elastic impact resistance, (Seat Back), Undercover, and so on.

그런데, 상기 GMT 소재는 신율이 작아 고속 충돌시 판파단 현상이 발생되므로 최근 자동차 부품의 스펙 강화와 맞물려 소재 측면에서도 많은 개선이 요구되고 있으며, 특히 범퍼빔의 경우 고속 충돌 및 에어백 등과 관련하여 충돌에 대한 더 높은 성능 개선이 요구되고 있다. 즉, 고속 충돌에서 범퍼빔의 완전 파손이 일어날 경우 초기 에너지 흡수능의 향상, 신율, 강도 등을 예로 들 수 있다.However, since the GMT material has a small elongation and plate breakage occurs at high speed collision, it is necessary to improve the material aspect in recent years in conjunction with the specification of automobile parts. In particular, in the case of a bumper beam, A higher performance improvement is required. That is, when the bumper beam is completely broken in a high-speed collision, the initial energy absorbing capacity is improved, the elongation, and the strength.

이에 따라, 스틸 코드(Steel Cord)와 같은 금속섬유를 활용하려는 시도가 있었으며, 그 예로 WO 03/076234에서는 폴리머 매트릭스와 메탈 강화구조를 갖는 임팩트빔을 개시한 바 있고, US 5,290,079에서는 캡슐 장입형 유리섬유와 열가소성 수지, 연성의 메탈 스트랜드로 구성된 범퍼빔을 개시한 바 있으며, WO 05/118263에서는 메탈 코드와 넌 메탈릭 섬유로 구성된 Semi-Finished 시트를 개시한 바 있다.Accordingly, attempts have been made to utilize metal fibers such as steel cord, for example WO 03/076234 discloses an impact beam having a polymer matrix and a metal reinforced structure, US 5,290,079 discloses a capsule- A bumper beam composed of a fiber, a thermoplastic resin and a soft metal strand has been disclosed. In WO 05/118263, a semi-finished sheet composed of a metal cord and a non-metallic fiber has been disclosed.

하지만, 개시된 이들 기술들은 공정이 매우 복잡하고, 그에 따라 제조비용이 급격히 상승하는 단점이 있다.However, these disclosed techniques have a disadvantage in that the process is very complicated and the manufacturing cost rises sharply.

이에, 본 발명자들은 아라미드 섬유에 주목하였다.Thus, the present inventors paid attention to aramid fibers.

아라미드 섬유는 매우 높은 인장강도를 지닌 소재로서, 뛰어난 내열성과 내약품성을 지니고 있는 고기능성 섬유이며, 높은 고속 충격 강도를 요구하는 방탄복, 방탄헬멧 등에 주로 사용된다.Aramid fiber has high tensile strength. It is a highly functional fiber with excellent heat resistance and chemical resistance. It is mainly used for armor and bulletproof helmet which require high high-speed impact strength.

특히, 아라미드 섬유는 GMT 대비 2배 이상의 인장강도를 갖는다.In particular, aramid fibers have a tensile strength more than twice that of GMT.

다만, 아라미드 섬유는 상대적으로 가격이 높고, 열경화성 플라스틱이 아닌 열가소성 플라스틱에서의 사용은 극히 드물다.However, aramid fibers are relatively expensive and their use in thermoplastics, which are not thermosetting plastics, is extremely rare.

이와 관련하여, 고강도 실현을 위해 아라미드 섬유를 응용하여 복합소재를 만들려는 노력들이 시도되었는 바, 이를 테면 특허공고 제1997-0001183호, 등록특허 제0213308호, 공개특허 제2006-0117677호, 공개특허 제2012-0090780호 등을 들 수 있다.In this connection, efforts have been made to make a composite material by applying aramid fibers to realize high strength. Such efforts have been made, for example, in Patent Publications 1997-0001183, 0213308, 2006-0117677, No. 2012-0090780.

이중에서, 공개특허 제2006-0117677호는 본 출원인에 의해 시도된 것이다.In this case, Patent Publication No. 2006-0117677 has been attempted by the present applicant.

그럼에도 불구하고, 자동차용 범퍼빔과 같은 소재가 요구하는 경량화(중량 절감)와 고강도, 즉 높은 충돌저항성을 동시에 만족시키기에는 한계가 있었다.Nevertheless, there has been a limit to satisfy both light weight (weight saving) and high strength required for materials such as automobile bumper beams, that is, high collision resistance.

이는 두 소재의 성형시 유발되는 작업성 불량과, 물성 산포 불량에 의해 기인된 것으로 파악되며, 지금까지 이러한 문제를 해결하기 위한 노력이 시도된 바 없었다.
It is understood that this is caused by poor workability caused by molding of the two materials and poor dispersion of physical properties, and efforts have not been made so far to solve such a problem.

본 발명은 상술한 바와 같은 종래 기술상의 제반 문제점들을 감안하여 이를 해결하고자 창출된 것으로, 아라미드 섬유와 GMT를 복합하여 중량은 줄이면서 인장강도를 높여 충돌저항성이 우수한 복합소재를 제공함에 그 주된 목적이 있다.
DISCLOSURE Technical Problem The present invention has been made in view of the above-mentioned problems in the prior art, and it is a primary object of the present invention to provide a composite material having a high impact resistance by reducing aramid fiber and GMT and increasing tensile strength have.

본 발명은 상기한 목적을 달성하기 위한 수단으로, 열가소성수지; 상기 열가소성수지와 성형 결합되어 있는 하이브리드매트;로 구성된 복합소재로서; 상기 하이브리드매트는 아라미드 섬유를 경사로 하고, 유리섬유를 위사로 하여 직조된 패브릭(Fabric)과; 상기 패브릭을 기존 GMT에서 사용된 글래스 화이버 넌-우번 매트(Glass Fiber Non-Woven Mat)에 적층 후 융합하여 이루어진 것을 특징으로 하는 아라미드 하이브리드 매트를 이용하여 중량은 줄이고 충돌성능은 향상시킨 복합소재를 제공한다.As a means for achieving the above object, the present invention provides a thermoplastic resin composition comprising: a thermoplastic resin; And a hybrid mat molded and bonded to the thermoplastic resin; The hybrid mat comprises: a fabric woven with a glass fiber as a weave, the aramid fiber being inclined; The fabric is laminated on a glass fiber non-woven mat used in conventional GMT, and then fused. The composite material is reduced in weight and improved in impact performance by using an aramid hybrid mat. do.

이때, 상기 패브릭은, 두 가닥씩의 경사가 위사와 교체된 후 앞뒤 쪽으로 꼬인 상태에서 경사가 제위치에 있도록 위사가 잡아주는 방식레노(Leno) 방식으로 직조된 것에도 그 특징이 있다.At this time, the fabric is also characterized in that it is woven by a leno method in which the weft is held so that the warp yarn is in a position where the warp yarns are twisted back and forth after the warp yarns of two strands are replaced with weft yarns.

또한, 상기 하이브리드매트는, 최종 복합소재의 비중이 1.28 이하로 유지하도록 하는 것에도 그 특징이 있다.
The hybrid mat is also characterized in that the specific gravity of the final composite material is maintained at 1.28 or less.

본 발명에 따르면, 아라미드 섬유를 하이브리드 매트로 만들고, 이를 GMT와 복합시킴으로써 성형 작업성을 향상시키고, 물성 분포를 균일하게 할 수 있어 저중량 설계가 가능하며, 인장강도 증대를 통한 충돌저항성도 높이는 효과를 얻을 수 있다.According to the present invention, by forming aramid fibers into hybrid mats and combining them with GMT, the molding workability can be improved, the physical property distribution can be made uniform, low weight design is possible, and the impact resistance can be increased by increasing the tensile strength Can be obtained.

특히, 본 발명은 기존 GMT 생산시 사용되던 설비를 변경하지 않고 그대로 사용할 수 있어 효용성이 뛰어나고, 설비비를 줄이는 효과도 얻을 수 있다.
Particularly, the present invention can be used as it is without changing the equipment used in the production of the GMT, so that the efficiency is excellent and the equipment cost can be reduced.

도 1은 본 발명 복합소재의 일 예에 따른 예시적인 층상구조를 보인 단면도이다.
도 2는 본 발명에 따른 복합소재를 제조하기 위한 직조 예를 보인 예시도이다.
도 3은 본 발명에 따른 복합소재를 제조하기 위한 설비를 예시한 모식도이다.1 is a cross-sectional view illustrating an exemplary layered structure according to an example of the composite material of the present invention.
2 is an exemplary view showing a weaving example for producing a composite material according to the present invention.
FIG. 3 is a schematic view illustrating a facility for manufacturing a composite material according to the present invention.

이하에서는, 첨부도면을 참고하여 본 발명에 따른 바람직한 실시예를 보다 상세하게 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명 설명에 앞서, 이하의 특정한 구조 내지 기능적 설명들은 단지 본 발명의 개념에 따른 실시예를 설명하기 위한 목적으로 예시된 것으로, 본 발명의 개념에 따른 실시예들은 다양한 형태로 실시될 수 있으며, 본 명세서에 설명된 실시예들에 한정되는 것으로 해석되어서는 아니된다.Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

또한, 본 발명의 개념에 따른 실시예는 다양한 변경을 가할 수 있고 여러 가지 형태를 가질 수 있으므로, 특정 실시예들은 도면에 예시하고 본 명세서에 상세하게 설명하고자 한다. 그러나, 이는 본 발명의 개념에 따른 실시예들을 특정한 개시 형태에 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경물, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다.In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

본 발명에 따른 복합소재는 도 1에 도시된 바와 같이, 열가소성수지(110)와 하이브리드매트(120)가 교대로 반복 적층된 구조를 갖는다.As shown in FIG. 1, the composite material according to the present invention has a structure in which a thermoplastic resin 110 and a hybrid mat 120 are alternately repeatedly laminated.

이때, 상기 열가소성수지(110)는 신율과 성형성을 고려하여 사용되는 것으로 GMT에 사용되는 폴리프로필렌이 바람직하며, 상기 하이브리드매트(120)는 인장강도와 인장탄성율을 높여 강도 보강 및 중량 절감을 위해 사용되는 것으로 아라미드 하이브리드 매트(Aramid Hybrid Mat)가 바람직하다.In this case, the thermoplastic resin 110 is preferably used in consideration of elongation and formability, and is preferably polypropylene used for GMT. The hybrid mat 120 may have a tensile strength and a tensile elasticity, Aramid Hybrid Mat is preferred as it is used.

특히, 상기 하이브리드매트(120)는 아라미드 섬유를 경사로 하고, 유리섬유를 위사로 하여 직조된 패브릭(Fabric)과; 상기 패브릭을 기존 GMT에서 사용된 글래스 화이버 넌-우번 매트(Glass Fiber Non-Woven Mat)에 적층 후 융합하여 제조된다.In particular, the hybrid mat 120 includes a fabric woven with a glass fiber as a weave with an aramid fiber inclined; The fabric is laminated to Glass Fiber Non-Woven Mat used in conventional GMT and fused.

이렇게 아라미드 섬유와 유리섬유를 복합적으로 직조하여 하이브리드매트(120)를 만드는 이유는 유리섬유의 경우 비중이 2.51-2.54이고, 아라미드 섬유의 비중은 1.44이므로 유리섬유로만 하이브리드매트를 만들 경우 중량이 증대되는 단점이 있음에 반해, 아라미드 섬유로만 하이브리드매트를 만들면 인장강도나 인장탄성율 측면과 중량 절감 측면에서 매우 유리할 것이지만 아라미드 섬유는 유리섬유 대비 가격이 매우 비싸기 때문에 유리섬유 전체를 아라미드 섬유로 대체할 경우 제조원가를 맞출 수 없게 된다.The reason why the hybrid mat 120 is made by combining the aramid fiber and the glass fiber is that the specific gravity of the glass fiber is 2.51-2.54 and the specific gravity of the aramid fiber is 1.44. In contrast to the disadvantages, if a hybrid mat is made only of aramid fiber, it will be very advantageous in terms of tensile strength, tensile modulus, and weight saving. However, since aramid fiber is very expensive compared to glass fiber, You will not be able to match.

따라서, 이들을 적정 비율로 혼용하여, 기존 GMT 대비 중량은 줄이면서 인장강도와 인장탄성율을 높여 충돌저항성을 극대화시키므로써 기계적 물성인 강도 향상에 우수한 효과를 얻을 수 있도록 한 것이다.Accordingly, by mixing these materials at an appropriate ratio, the weight is reduced compared to the conventional GMT, and the tensile strength and the tensile elastic modulus are increased to maximize the impact resistance, thereby achieving excellent effects in improving mechanical strength.

이때, 아라미드 섬유의 적정 혼용 비율을 확인하기 위해 하이브리드매트(120)를 GMT에 보강하여 만든 복합소재 샘플에 대한 물성(표 1에 기재됨)을 실험적으로 검증함으로써 최적 비율을 확인할 수 있었다.At this time, in order to confirm the proper mixing ratio of the aramid fibers, the optimum ratios could be confirmed by experimentally verifying the physical properties (as shown in Table 1) of the composite material sample prepared by reinforcing the hybrid mat 120 with GMT.

이 경우, 아라미드의 함유량은 GMT를 구성하기 위해 사용되는 함유량으로서, GMT 시트의 전체 중량에 대한 아라미드 섬유의 중량비를 말한다.In this case, the content of aramid is the content used to make GMT, which is the weight ratio of aramid fibers to the total weight of the GMT sheet.

또한, 하이브리드매트의 총 함유율은 본 발명의 경우 기존 GMT에 유리섬유를 단독으로 보강하던 비율 보다 당연히 더 적게 들어가도 되는 사항이므로 기존보다는 5% 작은 양으로 시험대상 시료 A,B를 동동하게 유지하였다.In addition, the total content of the hybrid mats in the present invention is less than the ratio of glass fibers alone reinforced with GMT, which is less than 5% of the conventional mats.


항목
Item
단위
unit 관련
규격relation
standard 기존
GMTexisting
GMT 복합소재Composite material AA GMT
대비GMT
prepare BB GMT
대비
GMT
prepare
하이브리드매트
총
함유율Hybrid Mat
gun
Content rate %% -- 45
(유리
섬유)45
(Glass
fiber) 40
(유리섬유+아라미드)40
(Glass fiber + aramid) 88%88% 40
(유리섬유+아라미드)40
(Glass fiber + aramid) 88%
88%
아라미드섬유함유율Aramid fiber content %% -- -- 1.81.8 -- 6.06.0 -
-
비중importance -- ASTM
D792ASTM
D792 1.281.28 1.181.18 91%91% 1.201.20 93%
93%
인장
강도Seal
burglar kgf/㎠kgf / cm2 ASTM
D638ASTM
D638 2,7972,797 2,5542,554 91%91% 3,1663,166 131%
131%
인장
탄성율Seal
Modulus of elasticity kgf/㎠kgf / cm2 ASTM
D638ASTM
D638 134,062134,062 128,999128,999 96%96% 154,046154,046 114%
114%

상기 표 1에서와 같이, 본 발명에서는 기존 대비 중량을 줄이면서도 인장강도와 인장탄성율은 높일 수 있음을 확인할 수 있었다.As shown in Table 1, in the present invention, it was confirmed that the tensile strength and the tensile elastic modulus can be increased while reducing the weight.

한편, 상기 하이브리드매트(120)를 GMT 생산라인에 투입할 경우, 작업성 저하와 물성 산포 불균일의 문제가 야기되는데, 이는 직조 방식 때문에 기인된다. On the other hand, when the hybrid mat 120 is put into a GMT production line, problems of workability deterioration and uneven distribution of physical properties are caused, which is caused by the weaving method.

즉, 도 2에 예시된 바와 같이, 하이브리드매트(120)(경사:아라미드, 위사:유리섬유)를 직조할 때 가장 일반적인 방법은 플레인(Plain) 방식(위사 및 경사가 한가닥씩 교대로 얽혀지는 직조방식)이지만, 이 경우에는 도 3과 같은 GMT 생산라인에 투입될 때 위사가 흐트러지는 현상으로 물성 산포 불균일이 매우 크고 강하게 초래되어 물성 불량이 야기된다.2, the most common method for weaving the hybrid mat 120 (warp: aramid, weft: fiberglass) is the Plain method, in which wefts and wefts are alternately intertwined However, in this case, the weft is disturbed when it is put into the GMT production line as shown in FIG. 3, resulting in a very large and strong uneven distribution of physical properties, resulting in poor physical properties.

때문에, 본 발명에서는 플레인 방식이 아닌 레노(Leno) 방식을 유지하는데, 레노 방식은 두 가닥씩의 경사가 위사와 교체된 후 앞뒤 쪽으로 꼬인 상태에서 경사가 제위치에 있도록 위사가 단단히 잡아주는 방식을 말한다.Therefore, in the present invention, the Leno method is maintained not in a plain manner, but in the Leno method, a warp is firmly held in such a manner that the warp yarn is in a position where the warp yarns are twisted back and forth after two warp yarns are replaced with weft yarns It says.

이후, 직조된 아라미드 하이브리드 매트(하이브리드매트)를 기존 GMT 생산라인에 그대로 투입하기만 하면 기존 설비를 변경없이 곧바로 사용하여 생산할 수 있으므로 생산효율이 높아지고, 설비 비용이 추가로 발생하지 않아 매우 효율적이며, 작업성도 좋다.Then, simply putting the woven aramid hybrid mat (hybrid mat) into the existing GMT production line can produce it without using the existing equipment, so that the production efficiency is increased, the equipment cost is not increased, Workability is also good.

예컨대, 도 3과 같이, 용융된 열가소성 수지(110)-하이브리드매트(120)-용융된 열가소성 수지(110)-하이브리드매트(120)-용융된 열가소성 수지(110)와 같은 층상 구조가 되도록 배열하고, 라미네이팅존(200)을 통과하면 복합소재로 간단히 효율 좋게 제조할 수 있게 된다.For example, as shown in FIG. 3, the molten thermoplastic resin 110, the hybrid mat 120, the melted thermoplastic resin 110, the hybrid mat 120, and the melted thermoplastic resin 110 are arranged in a layered structure And passes through the laminating zone 200, the composite material can be simply and efficiently manufactured.

이렇게 제조된 복합소재는 비중이 1.20으로서 1.28의 비중을 갖는 기존 GMT(유리섬유 45% 포함) 보다 비중을 낮출 수 있어 경량화가 가능하고(중량 절감), 인장강도와 인장탄성율도 최소 10%, 최대 30%까지 높일 수 있어 충돌 저항성이 더 우수하게 된다.The composite material thus produced has a specific gravity of 1.20, which can be lighter (weight saving) by lowering the specific gravity than conventional GMT (including 45% of glass fibers) having a specific gravity of 1.28, and has a tensile strength and tensile elastic modulus of at least 10% It can be increased up to 30%, resulting in better collision resistance.

여기에서, 본 발명에 따른 복합소재가 범퍼빔으로써 충돌저항성이 기존 GMT 대비 얼마나 높은지, 그리고 중량 절감 효과는 있는지를 확인하기 위해 상기 복합소재로 범퍼빔을 만들었고, 기존 GMT로 만든 범퍼빔과 비교하여 표 2에 나타내었다.Here, the composite material according to the present invention was used as a bumper beam, and the bumper beam was made of the composite material in order to check how high the impact resistance is in comparison with the conventional GMT and the weight saving effect. Compared with the conventional bumper beam made of GMT Table 2 shows the results.

구분division 기존 GMT-범퍼빔Original GMT-Bumper Beam 본 발명-범퍼빔In the present invention, 비고Remarks 충돌성능 만족 중량(g)Collision Performance Satisfactory Weight (g)
4,653
4,653
3,908
3,908 16%의 중량 절감 효과 있음16% weight saving 충돌성능Crash performance 만족satisfied 만족satisfied

상기 표 2에서와 같이, 본 발명에 따른 복합소재는 충돌저항성도 우수하여 충돌성능도 만족하면서, 기존 GMT 대비 16%에 이르는 중량 절감효과도 있는 것으로 확인되었다.As shown in Table 2, the composite material according to the present invention is excellent in collision resistance and satisfies crashworthiness, and has a weight saving effect of 16% compared to the conventional GMT.

따라서, 본 발명에 따른 복합소재를 이용한 자동차용 범퍼빔 등 관련 분야에서 경량화와 내충격성 향상용 소재로 광범위하게 활용될 것으로 기대된다.
Therefore, it is expected to be widely used as a material for improving the weight and impact resistance in related fields such as automobile bumper beam using the composite material according to the present invention.

110: 열가소성 수지 120: 하이브리드매트
200: 라미네이팅존110: thermoplastic resin 120: hybrid mat
200: Laminating zone

Claims (3)

열가소성수지; 상기 열가소성수지와 성형 결합되어 있는 하이브리드매트;로 구성된 복합소재로서;
상기 하이브리드매트는 아라미드 섬유를 경사로 하고, 유리섬유를 위사로 하여 직조된 패브릭(Fabric)과;
상기 패브릭을 기존 GMT에서 사용된 글래스 화이버 넌-우번 매트(Glass Fiber Non-Woven Mat)에 적층 후 융합하여 이루어진 것을 특징으로 하는 아라미드 하이브리드 매트를 이용하여 중량은 줄이고 충돌성능은 향상시킨 복합소재.
Thermoplastic resin; And a hybrid mat molded and bonded to the thermoplastic resin;
The hybrid mat comprises: a fabric woven with a glass fiber as a weave, the aramid fiber being inclined;
Wherein the fabric is laminated on a glass fiber non-woven mat used in conventional GMT, and then fused. The composite material is reduced in weight and improved in impact performance by using an aramid hybrid mat.
청구항 1에 있어서;
상기 패브릭은, 두 가닥씩의 경사가 위사와 교체된 후 앞뒤 쪽으로 꼬인 상태에서 경사가 제위치에 있도록 위사가 잡아주는 방식레노(Leno) 방식으로 직조된 것을 특징으로 하는 아라미드 하이브리드 매트를 이용하여 중량은 줄이고 충돌성능은 향상시킨 복합소재.
The method of claim 1,
The fabric is woven in a Leno system in which the warp yarns are held so that the warp yarns are in a position where the warp yarns are twisted back and forth after the two warp yarns are replaced with weft yarns. And collision performance is improved.
청구항1에있어서;
상기 하이브리드매트는, 최종 복합소재의 비중이 1.28 이하로 유지하도록 하는 것을 특징으로 하는 아라미드 하이브리드 매트를 이용하여 중량은 줄이고 충돌성능은 향상시킨 복합소재.The method of claim 1,
Wherein the hybrid mat has a specific gravity of 1.28 or less as a final composite material. The composite material has reduced weight and improved impact performance by using an aramid hybrid mat.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100213308B1 (en) 1994-06-30 1999-08-02 하기주 Manufacturing method of aramid complex fabric
KR20090128603A (en) * 2008-06-11 2009-12-16 (주)엘지하우시스 Method of preparing complex sheet
KR101037609B1 (en) 2009-05-14 2011-05-30 한화엘앤씨 주식회사 Hybrid composite material with enhanced crash performances

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100213308B1 (en) 1994-06-30 1999-08-02 하기주 Manufacturing method of aramid complex fabric
KR20090128603A (en) * 2008-06-11 2009-12-16 (주)엘지하우시스 Method of preparing complex sheet
KR101037609B1 (en) 2009-05-14 2011-05-30 한화엘앤씨 주식회사 Hybrid composite material with enhanced crash performances

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