KR100366587B1 - Manufacturing Process of Thermoset Plastic Composition for Automobile Fender - Google Patents
Manufacturing Process of Thermoset Plastic Composition for Automobile Fender Download PDFInfo
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- KR100366587B1 KR100366587B1 KR10-1999-0037205A KR19990037205A KR100366587B1 KR 100366587 B1 KR100366587 B1 KR 100366587B1 KR 19990037205 A KR19990037205 A KR 19990037205A KR 100366587 B1 KR100366587 B1 KR 100366587B1
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- automobile fenders
- resin
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/06—Unsaturated polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
- B29K2105/128—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles in the form of a mat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
Abstract
본 발명은 자동차 펜더용 열경화성 수지의 제조방법에 관한 것으로서, 더욱 상세하게는 자동차 펜더를 제조함에 있어 종래에 자동차 펜더용 재질로 사용되고 있는 강판을 대신하여 핸드레이업(Hand Lay Up) 공법을 이용하되 불포화 폴리에스테르 수지를 기본수지로 사용하고, 여기에 보강제로서 유리섬유 또는 탄소섬유를 1겹 이상으로 적층함으로써, 종래에 비하여 우수한 물성을 갖고 설계변경이 용이할 뿐만 아니라, 원가절감 면에서 월등히 개선되어 전기자동차 등의 특수목적 소량 양산차종에 효과적으로 적용할 수 있는 자동차 펜더용 열경화성 수지의 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a thermosetting resin for automobile fenders, and more particularly, in the manufacture of automobile fenders, using a hand lay up method in place of a steel sheet conventionally used as a material for automobile fenders. By using unsaturated polyester resin as the basic resin and laminating one or more layers of glass fiber or carbon fiber as reinforcing agent, it has excellent physical properties compared to the conventional ones and is easy to change design, and is greatly improved in cost reduction. The present invention relates to a method for manufacturing thermosetting resins for automobile fenders that can be effectively applied to mass production vehicles of special purpose such as electric vehicles.
Description
본 발명은 자동차 펜더용 열경화성 수지의 제조방법에 관한 것으로서, 더욱 상세하게는 자동차 펜더를 제조함에 있어 종래에 자동차 펜더용 재질로 사용되고 있는 강판을 대신하여 핸드레이업(Hand Lay Up) 공법을 이용하되 불포화 폴리에스테르 수지를 기본수지로 사용하고, 여기에 보강제로서 유리섬유 또는 탄소섬유를 1겹 이상으로 적층함으로써, 종래에 비하여 우수한 물성을 갖고 설계변경이 용이할 뿐만 아니라, 원가절감 면에서 월등히 개선되어 전기자동차 등의 특수목적 소량 양산차종에 효과적으로 적용할 수 있는 자동차 펜더용 열경화성 수지의 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a thermosetting resin for automobile fenders, and more particularly, in the manufacture of automobile fenders, using a hand lay up method in place of a steel sheet conventionally used as a material for automobile fenders. By using unsaturated polyester resin as the basic resin and laminating one or more layers of glass fiber or carbon fiber as reinforcing agent, it has excellent physical properties compared to the conventional ones and is easy to change design, and is greatly improved in cost reduction. The present invention relates to a method for manufacturing thermosetting resins for automobile fenders that can be effectively applied to mass production vehicles of special purpose such as electric vehicles.
일반적으로, 자동차 차체 외판의 재질로는 강판이 사용되고 있다. 그러나, 강판을 재질로 사용할 경우에는 강판의 성형 특성상 3 ∼ 4 단계의 프레스 성형공정을 거쳐야하므로 금형제작비 및 시설투자비가 많이 소요되고, 강판코일에서 블랭킹 공정을 거치면서 원재료의 손실량이 커지는 문제가 있다. 또한, 강판을 사용할 때에는 일정하중 이상에서 영구 변형을 일으키므로 오일캐닝(oil canning) 현상이 발생하는 문제가 있다. 아울러, 강판은 비중이 7.8이므로 두께를 얇게 하더라도 부품의 중량이 커지는 문제와, 강판의 고유 특성인 부식의 문제를 극복할 수 없는 문제가 있다.In general, steel plate is used as a material of the vehicle body outer plate. However, when steel sheet is used as a material, it has to go through three to four stages of press molding process due to the forming characteristics of the steel sheet, which requires a lot of mold manufacturing cost and facility investment cost, and there is a problem in that the loss amount of raw materials is increased while the steel sheet coil is blanked. . In addition, there is a problem that the oil canning phenomenon occurs because the permanent deformation occurs over a certain load when using the steel sheet. In addition, since the steel sheet has a specific gravity of 7.8, even if the thickness is thin, there is a problem in that the weight of the component becomes large and the problem of corrosion, which is an inherent property of the steel sheet, cannot be overcome.
본 발명의 발명자들은 상기와 같은 자동차 차체 외판이 갖고 있는 문제점들을 해결하기 위하여 연구·노력한 결과, 새로운 개념의 자동차 차체 외판용 복합재를 개발하게 되었다. 따라서, 본 발명은 종래에 자동차 차체 외판용 재질로 사용되고 있는 강판을 대신하여 핸드레이업(Hand Lay Up) 공법을 이용하며, 불포화 폴리에스테르 수지를 사용하고, 여기에 보강제로서 유리섬유 또는 탄소섬유를 1겹 이상으로 적층함으로써, 종래에 비하여 우수한 물성을 갖고 설계변경이 용이할 뿐만 아니라, 원가절감 면에서 월등히 개선되어 전기자동차 등의 특수목적 소량 양산차종에 효과적으로 적용할 수 있는 자동차 펜더용 열경화성 수지의 제조방법을 제공하는 데 그 목적이 있다.The inventors of the present invention, as a result of research and efforts to solve the problems of the vehicle body shell as described above, has developed a new concept of a vehicle body shell composite material. Therefore, the present invention uses the Hand Lay Up method in place of the steel sheet conventionally used as the exterior material for automobile bodies, and uses an unsaturated polyester resin, wherein glass fiber or carbon fiber is used as a reinforcing agent. By laminating in one or more layers, the thermosetting resin for automobile fenders can be effectively applied to small-volume mass-produced vehicles for special purposes such as electric vehicles by not only having excellent physical properties and easy design changes, but also greatly improving in terms of cost reduction. The purpose is to provide a manufacturing method.
도 1은 본 발명에 사용되는 분할된 금형의 형상을 나타낸 것이다.Figure 1 shows the shape of the divided mold used in the present invention.
[도면의 주요 부분에 대한 부호의 설명][Description of Symbols for Main Parts of Drawing]
1 : 제 1 몰드(mold) 2 : 제 2 몰드(mold)1: first mold 2: 2nd mold
3 : 제 3 몰드(mold)3: third mold
본 발명에 사용되는 재질은 불포화 폴리에스테르 수지를 기본수지로 하고, 여기에 보강제로서 유리섬유 또는 탄소섬유가 20 ∼ 60 중량%로 함유되어 이루어진 자동차 차체 외판용 열경화성 수지를 사용한다.The material used for this invention uses unsaturated polyester resin as a base resin, and the thermosetting resin for automobile body exterior panels which consists of 20 to 60 weight% of glass fiber or carbon fiber as a reinforcement agent is used here.
또한, 본 발명은 자동차 차체 외판용 열경화성 수지를 제조하는 방법에 있어서, 자동차 펜더를 제조하기 위한 금형 위에 불포화 폴리에스테르 수지로 겔 코팅한 다음에, 다시 상기 겔 코팅된 면 위에 보강제로서 유리섬유 또는 탄소섬유를 핸드레이업(Hand Lay Up) 공법을 이용하여 1 ∼ 4 겹으로 적층하는 자동차 차체 외판용 열경화성수지를 제조하는 방법을 특징으로 한다.In addition, the present invention is a method of manufacturing a thermosetting resin for automobile body shell, the gel coating with an unsaturated polyester resin on a mold for manufacturing a car fender, and then again a glass fiber or carbon as a reinforcement on the gel-coated side It is characterized by a method of manufacturing a thermosetting resin for outer shell of a vehicle body in which fibers are laminated in one to four layers using a hand lay up method.
이와 같은 본 발명을 더욱 상세히 설명하면 다음과 같다.Referring to the present invention in more detail as follows.
본 발명은 종래에 자동차 차체 외판용 재질로 사용되고 있는 강판을 대신하여 불포화 폴리에스테르 수지를 사용하고, 여기에 보강제로 유리섬유 또는 탄소섬유를 1겹 이상으로 적층하여 자동차 차체 외판을 제조하는 방법에 관한 것이다.The present invention relates to a method for manufacturing an automobile body shell by using an unsaturated polyester resin instead of a steel sheet conventionally used as a material for automobile body shells, by laminating one or more layers of glass fibers or carbon fibers as a reinforcing agent. will be.
본 발명을 자동차 차체 외판용 열경화성 수지의 제조방법을 들어 상세히 하고자 한다.The present invention will be described in detail with respect to the manufacturing method of the thermosetting resin for automobile body shell.
먼저, 본 발명에 따른 자동차 펜더용 열경화성 수지를 제조하기 위한 방법으로는 다음과 같은 핸드레이업(Hand Lay Up) 공법을 사용하였다. 먼저, 자동차펜더를 제조하기 위한 금형인 3 개의 단편으로 제작된 금형을 제작하는 바, 이를 설명하고자 한다.First, a method of manufacturing a thermosetting resin for automobile fenders according to the present invention used the following hand lay up (Hand Lay Up) method. First, a mold made of three pieces, which are molds for manufacturing an automobile fender, will be described.
우선, 마스터 모델(positive mold, 목형이나 목업(Mockup)이라고 함)을 제조한 다음, 이를 기준으로 FRP 또는 에폭시 수지로 금형(negative mold)을 제조한다. 상기 제조된 금형은 첨부도면 도 1에 나타낸 바와 같이 일반적으로 상/하 금형으로 이루어진 통상의 금형이 아닌 분할형 금형으로 제작하므로 언더-컷(under-cut)이 존재하여 탈형이 되지 않는 문제를 해결할 수 있다.First, a master model (called a positive mold, called a mockup or a mockup) is manufactured, and then a mold is made of FRP or epoxy resin based on this. Since the manufactured mold is manufactured as a divided mold rather than a normal mold consisting of upper and lower molds as shown in FIG. 1, an under-cut exists to solve the problem of not being demolded. Can be.
그 다음에, 본 발명에서는 상기한 자동차 펜더를 제조하기 위한 금형인 3 개의 단편으로 제작된 금형 위에 불포화 폴리에스테르 수지로 겔 코팅하는 과정을 거친다.Then, the present invention is subjected to a gel coating process with an unsaturated polyester resin on a mold made of three pieces, which are molds for manufacturing the above-described automotive fender.
여기서, 불포화폴리에스테르 수지는 열경화성(熱硬化性) 플라스틱에 속하는 고분자화합물로서, 일반적으로 유리섬유로 강화되는데, 이러한 플라스틱을 플라스틱(fiber reinforced plastics:FRP)이라 한다. 여기서, 상기 불포화 폴리에스테르 수지로는 변성 비스페놀계 수지, 비스페놀계 수지, 이소계 수지, 오소계 수지, 테레계 수지 및 비닐에스테르계 수지 중에서 선택하여 사용할 수 있다.Herein, the unsaturated polyester resin is a high molecular compound belonging to a thermosetting plastic, and is generally reinforced with glass fibers. Such plastics are called plastic reinforced plastics (FRP). Herein, the unsaturated polyester resin may be selected from modified bisphenol resins, bisphenol resins, iso resins, ortho resins, tere resins and vinyl ester resins.
그 다음에 상기 겔 코팅된 면 위에 보강제로 유리섬유 또는 탄소섬유를 1 ∼ 4 겹으로 적층하는 과정을 거친다.Thereafter, a process of laminating 1 to 4 layers of glass fibers or carbon fibers as a reinforcing agent on the gel-coated side.
이때, 상기 보강제는 절단 촙스트랜드 매트(Chopped Strand Mat), 우븐 로빙 매트(Woven Roving Mat), 천(Cloth Mat) 또는 방적사 매트(Yarn Mat) 형태로 적층되는데, 그 적층순서는 요구되는 물성에 따라 달리할 수 있다.In this case, the reinforcing agent is laminated in the form of a chopped strand mat, a woven roving mat, a cloth mat or a yarn mat. It can be different.
이렇게 보강제를 적층시킨 후, 수작업으로 롤러를 사용하여 수지를 함침시키면서, 상온에서 경화시키는 바, 경화시간은 5 ∼ 15분으로 할 수 있다. 따라서, 완전히 경화되기 전에 다시 적층하는 과정을 되풀이 하기 때문에, 성형품의 두께는 보강제를 몇 층으로 적층(lay-up)하느냐에 달려 있다. 이때, 경화시간이 5분 미만일 경우에는 적절히 경화가 되지않아 층간이 협차될 수 있어 품질문제를 야기시킬 수 있고, 반면에 15분을 초과할 경우에는 너무 많이 경화되어 제작완료 후, 층간분리 현상이 발생할 수 있어 바람직하지 않다.After laminating | stacking a reinforcing agent in this way, it hardens | cures at normal temperature, impregnating resin using a roller by hand, and hardening time can be made into 5 to 15 minutes. Therefore, since the lamination process is repeated before it is completely cured, the thickness of the molded article depends on how many layers the reinforcing agent is laid up. At this time, when the curing time is less than 5 minutes, it may not be cured properly and the interlayers may be narrowed, which may cause quality problems. On the other hand, when the curing time is over 15 minutes, after too much curing, the separation between layers may occur. It is not desirable to occur.
여기서, 이렇게 보강제로 첨가되는 유리섬유 또는 탄소섬유는 전체 외판용 열경화성 수지에 대하여 20 ∼ 60 중량%로 한정하여 함유시키는 것이 바람직한 바, 만일 그 함량이 20 중량% 미만이면 강성이 부족하여 두께를 증가시켜야 되고, 경량화 효과가 작아져 바람직하지 않고, 반면에 60 중량%를 초과하여 과량으로 함유되면 원료 수지와의 함침성이 나빠져 오히려 성형성이 나빠지고, 강도 등의 물성이 감소하는 문제가 있어 바람직하지 않다.Here, the glass fiber or carbon fiber added as a reinforcing agent is preferably limited to 20 to 60% by weight relative to the entire thermosetting resin for the outer shell, if the content is less than 20% by weight, the rigidity is insufficient to increase the thickness On the other hand, if the weight reduction effect is small, it is not preferable. On the other hand, when it is contained in excess of 60% by weight, impregnation with the raw material resin is worsened, moldability is worsened, and physical properties such as strength are decreased. Not.
이하 본 발명을 실시예에 의거 더욱 상세히 설명하겠는 바, 본 발명이 실시예에 의해 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited by Examples.
실시예 1Example 1
우선, 강판 CAD 데이타를 입수하여, 수치제어(Numerical Control) 가공 및 마감공정(finishing)을 통해 마스터 모델(positive mold)을 제작한 후, FRP로 negative mold를 제작한 다음, 불포화 폴리에스테르 수지(PC 202, 애경산업)를 사용하여 젤 코팅(gel coating)한 후, 보강제를 총 4겹으로 적층하되, 1 겹으로 보강제를 적층시킨 후, 수작업으로 롤러를 사용하여 수지를 함침시키면서, 상온에서 10분 동안 경화시키는 공정을 4회 반복하여 수행하였다. 이때, 보강제의 적층순서는 유리섬유 우븐로빙매트(WP 580 P, 한국 Owense-Corning사), 유리섬유 촙드스트랜드매트(CSM 300, 한국 Owense-Corning사), 유리섬유 우븐로빙매트(WP 580 P, 한국 Owense-Corning사), 유리섬유 촙드스트랜드매트(CSM 300, 한국 Owense-Corning사) 순으로 하였다. 최종 성형물의 두께는 2.5 ㎜이었다.First, obtain CAD data of steel sheet, make a master mold through numerical control processing and finishing, then make negative mold with FRP, and then use unsaturated polyester resin (PC 202, Aekyung Industrial Co., Ltd., after gel coating, laminating the reinforcing agent in total of 4 layers, laminating the reinforcing agent in 1 layer, and then manually impregnating the resin using a roller for 10 minutes at room temperature. The curing process was carried out four times. At this time, the stacking order of the reinforcing agent is glass fiber woven roving mat (WP 580 P, Owense-Corning Korea), glass fiber chopped strand mat (CSM 300, Owense-Corning Korea), glass fiber woven roving mat (WP 580 P, Owense-Corning Korea) and fiberglass chopped strand mat (CSM 300, Owense-Corning Korea). The thickness of the final molding was 2.5 mm.
그리고, 제조된 성형물로부터 시편을 채취하여 비중, 굴곡강도 및 굴곡탄성율을 표준시험방법(ASTM 등)에 따라 측정하였고, 내덴트 강성은 손가락 치구와 손바닥 치구로 나누어 성형물에 하중을 가하여 변형되는 정도를 측정하는 방법으로 평가하였다.Specimens were collected from the manufactured moldings, and specific gravity, flexural strength, and flexural modulus were measured according to standard test methods (ASTM, etc.), and the dent stiffness was divided into finger jig and palm jig and applied to the molding to determine the degree of deformation. It evaluated by the method of measuring.
실시예 2Example 2
상기 실시예 1과 동일한 방법으로 제작하되, 보강제로서, 탄소섬유로 제조한 촙드스트랜드매트를 동시에 사용하여 성형하였다. 이때, 보강제의 적층순서는 유리섬유 우븐로빙매트(WP 580 P, 한국 Owense-Corning사), 유리섬유 촙드스트랜드매트(CSM 300, 한국 Owense-Corning사), 유리섬유 우븐로빙매트(WP 580 P, 한국 Owense-Corning사), 탄소섬유 촙드스트랜드매트(CF 1104, 한국 카본사) 순으로 하였다. 최종 성형물의 두께는 2.9 ㎜이었다.It was manufactured in the same manner as in Example 1, but was molded using a chopped strand mat made of carbon fiber at the same time as a reinforcing agent. At this time, the stacking order of the reinforcing agent is glass fiber woven roving mat (WP 580 P, Owense-Corning Korea), glass fiber chopped strand mat (CSM 300, Owense-Corning Korea), glass fiber woven roving mat (WP 580 P, Owense-Corning Korea) and carbon fiber chopped strand mat (CF 1104, Korea Carbon). The thickness of the final molding was 2.9 mm.
그리고, 상기 실시예 1과 동일한 방법으로 비중, 굴곡강도, 굴곡탄성율 및 내덴트 강성을 측정하였다.In addition, specific gravity, flexural strength, flexural modulus, and dent stiffness were measured in the same manner as in Example 1.
비교예 1Comparative Example 1
통상적인 자동차 차체 강판제로 제작한 자동차 펜더(아토즈, 현대자동차)를 사용하였다.An automobile fender (Atoz, Hyundai Motor) made of a conventional automobile body steel sheet was used.
즉, 원부자재인 강판 코일(coil)을 블랭킹하고, 강판 금형을 사용하여 프레스(press) 성형한 후, 트리밍(trimming)하고, 플랜지(flange)면을 캠(cam)으로 두드려 최종형상을 만들었다.That is, the steel sheet coil (coil), which is a raw and subsidiary material, was blanked, press-molded using a steel sheet mold, trimmed, and the flange surface was tapped with a cam to form a final shape.
그리고, 상기 실시예 1과 동일한 방법으로 비중, 굴곡강도, 굴곡탄성율 및 내덴트 강성을 측정하였다.In addition, specific gravity, flexural strength, flexural modulus, and dent stiffness were measured in the same manner as in Example 1.
상기한 결과를 통해서 볼 때, 본 발명(실시예 1 ∼ 2)은 내덴트 강성이 월등히 향상됨을 알수 있었다. 또한, 비중이 종래의 강판제 외판(비교예 1)과 비교하여 월등히 작아 월등히 우수한 경량화 효과를 얻을 수 있었다.From the above results, it was found that the present invention (Examples 1 to 2) significantly improved the dent stiffness. Moreover, the specific gravity was much smaller than the conventional steel plate (comparative example 1), and the outstanding weight reduction effect was acquired.
상술한 바와 같이, 본 발명에 따라 제조된 자동차용 펜더는 내덴트(Dent)성, 차제강성, 내부식성 등의 물성이 향상되었다. 또한,종래에는 차체 외판을 제조시 최소 3 ∼ 4개의 금형이 필요하였으나, 본 발명은 1개의 금형만으로도 제작이 가능하므로 패널 제조공정이 단순하고, 재질변경이 용이하고, 금형 수정이 용이하므로 설계변경에 따른 파트 컨솔리에이션(Part Consolidation) 가능하다. 아울러, 경량화 효과를 약 30% 정도 얻을수 있고, 50% 정도의 원가절감 효과를 얻을 수 있다.As described above, the automotive fender manufactured according to the present invention has improved physical properties such as dent resistance, vehicle stiffness, and corrosion resistance. In addition, in the past, at least three to four molds were required to manufacture the outer shell of the vehicle body. However, the present invention can be manufactured with only one mold, so the panel manufacturing process is simple, the material can be easily changed, and the mold can be easily modified. Part consolidation is possible. In addition, a weight reduction effect of about 30% can be obtained, and a cost reduction effect of about 50% can be obtained.
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-1999-0037205A KR100366587B1 (en) | 1999-09-02 | 1999-09-02 | Manufacturing Process of Thermoset Plastic Composition for Automobile Fender |
| JP35243999A JP2001079866A (en) | 1999-09-02 | 1999-12-10 | Production of thermosetting resin for car fender |
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-1999-0037205A KR100366587B1 (en) | 1999-09-02 | 1999-09-02 | Manufacturing Process of Thermoset Plastic Composition for Automobile Fender |
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| KR20010026057A KR20010026057A (en) | 2001-04-06 |
| KR100366587B1 true KR100366587B1 (en) | 2003-01-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20030097294A (en) * | 2002-06-20 | 2003-12-31 | 현대자동차주식회사 | A molding method for thermosetting resin composition |
| JP4568186B2 (en) * | 2005-07-22 | 2010-10-27 | ダイハツ工業株式会社 | Dent stiffness prediction method |
| US20100143692A1 (en) * | 2008-12-10 | 2010-06-10 | Ryan James P | Carbon and Glass Fiber Reinforced Composition |
| JP5302910B2 (en) * | 2010-01-29 | 2013-10-02 | ダイハツ工業株式会社 | Dent stiffness prediction method |
| JP5302909B2 (en) * | 2010-01-29 | 2013-10-02 | ダイハツ工業株式会社 | Dent stiffness prediction method |
| CN103552249B (en) * | 2013-10-12 | 2017-01-11 | 奇瑞汽车股份有限公司 | Carbon fiber composite reinforcing plate for upper beam of automobile water tank, and manufacturing method thereof |
| CN111055928A (en) * | 2019-11-29 | 2020-04-24 | 中国第一汽车股份有限公司 | Novel carbon fiber material fender and flagpole fixed knot construct |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6438222A (en) * | 1987-08-04 | 1989-02-08 | Sekisui Chemical Co Ltd | Manufacture of molded object made of fiber reinforced plastic |
| JPH06246840A (en) * | 1993-02-26 | 1994-09-06 | Fuji Heavy Ind Ltd | Material indication method for frp molded article |
| JPH0732380A (en) * | 1993-07-19 | 1995-02-03 | Hitachi Kasei Mold Kk | Glass fiber-reinforced unsaturated polyester resin light-weight molding and manufacture thereof |
| JPH0740451A (en) * | 1993-07-30 | 1995-02-10 | Dainippon Ink & Chem Inc | Manufacture of fiber-reinforced plastics and molded item therof |
| KR970033760A (en) * | 1995-12-15 | 1997-07-22 | 김태구 | Grain molding method of crush pad |
-
1999
- 1999-09-02 KR KR10-1999-0037205A patent/KR100366587B1/en not_active IP Right Cessation
- 1999-12-10 JP JP35243999A patent/JP2001079866A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6438222A (en) * | 1987-08-04 | 1989-02-08 | Sekisui Chemical Co Ltd | Manufacture of molded object made of fiber reinforced plastic |
| JPH06246840A (en) * | 1993-02-26 | 1994-09-06 | Fuji Heavy Ind Ltd | Material indication method for frp molded article |
| JPH0732380A (en) * | 1993-07-19 | 1995-02-03 | Hitachi Kasei Mold Kk | Glass fiber-reinforced unsaturated polyester resin light-weight molding and manufacture thereof |
| JPH0740451A (en) * | 1993-07-30 | 1995-02-10 | Dainippon Ink & Chem Inc | Manufacture of fiber-reinforced plastics and molded item therof |
| KR970033760A (en) * | 1995-12-15 | 1997-07-22 | 김태구 | Grain molding method of crush pad |
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| KR20010026057A (en) | 2001-04-06 |
| JP2001079866A (en) | 2001-03-27 |
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