KR950009491B1 - Fiber reinforced composite resin forming sheet - Google Patents
Fiber reinforced composite resin forming sheet Download PDFInfo
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- KR950009491B1 KR950009491B1 KR1019920012192A KR920012192A KR950009491B1 KR 950009491 B1 KR950009491 B1 KR 950009491B1 KR 1019920012192 A KR1019920012192 A KR 1019920012192A KR 920012192 A KR920012192 A KR 920012192A KR 950009491 B1 KR950009491 B1 KR 950009491B1
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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
- D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
- D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
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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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4218—Glass fibres
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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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4242—Carbon fibres
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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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/4334—Polyamides
- D04H1/4342—Aromatic polyamides
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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
- D04H1/48—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 in combination with at least one other method of consolidation
- D04H1/488—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 in combination with at least one other method of consolidation in combination with bonding agents
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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
- D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
- D04H5/04—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by applying or incorporating chemical or thermo-activatable bonding agents in solid or liquid form
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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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
Abstract
Description
제1도는 보강섬유 매트 제조장치의 개략도이고,1 is a schematic diagram of a reinforcing fiber mat manufacturing apparatus,
제2도는 제1도의 장치중 벤츄리관(VENTURI TUBE)의 확대도이다.FIG. 2 is an enlarged view of the venturi tube of the apparatus of FIG. 1.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 보강섬유 로빙(Roving) 2 : 벤츄리판1: Reinforcing Fiber Roving 2: Venturi Plate
3 : 보강단섬유 분산장치 4 : 바인너(binder) 분산장치3: reinforcing end fiber dispersing device 4: binder dispersing device
5 : 니들링머시인(needling machine) 6 : 보강섬유5: needling machine (needling machine) 6: reinforcing fiber
7 : 보강단섬유 8 : 컨베이어 벨트7: reinforcing end fiber 8: conveyor belt
9 : 롤러(roller) 10, 10' : 노즐9: roller 10, 10 ': nozzle
본 발명은 열가소성 수지와 섬유상 또는 매트형상의 보강재를 사용하여 경량이면서 재사용이 가능하고 기계적 강도 및 내열성이 우수한 판상의 섬유강화 열가소성 복합수지 성형체의 제조방법에 관한 것이다.The present invention relates to a method for producing a plate-shaped fiber-reinforced thermoplastic composite resin molded article that is lightweight, reusable, and has excellent mechanical strength and heat resistance by using a thermoplastic resin and a fibrous or mat-shaped reinforcing material.
일반적으로 판상의 섬유강화 열가소성 복합수지는 가벼우면서 기계적 강도가 뛰어나고 경화등의 과정이 필요없이 스탬핑성형법에 의해 목적하는 물질로 용이하게 제조할 수 있어 자동차부품, 기계부품, 건축자재, 전기·전자부품 등에 광범위하게 사용되고 있다.Generally, the plate-shaped fiber-reinforced thermoplastic composite resin is lightweight, has excellent mechanical strength, and can be easily manufactured with the desired material by stamping molding without the need for hardening process. Therefore, automobile parts, machine parts, building materials, electrical and electronic parts It is widely used for such purposes.
열가소성 복합수지의 스탬핑성형법은 판상의 프리프레그를 수지의 용융온도 이상으로 가열하여 판상의 재료가 유동성을 갖게하고, 가열된 금형내에 투입하여 압축성형한 후 금형을 냉각시켜 임의의 성형품을 제조하는 방법이다.Stamping molding method of thermoplastic composite resin is to heat the plate-shaped prepreg above the melting temperature of the resin to make the plate-like material flowable, insert it into a heated mold, compress the molding, and then cool the mold to manufacture an arbitrary molded article. to be.
그러나, 상기의 스탬핑성형법으로 복잡한 형태나 리브형상이 있는 성형품을 제조할 경우 성형풍의 특정부분에 균열이 생기거나 미성형 부분이 발생하고 또는 보강섬유가 수지와 같이 흐르지 않아서 불균일한 성형품이 얻어질 수 있는 단점이 있다.However, when manufacturing a molded article having a complicated shape or rib shape by the above stamping molding method, cracks or unformed parts may occur in a certain part of the molding wind, or a reinforcing fiber does not flow with the resin, resulting in an uneven molded product. There is a disadvantage.
또한, 보강섬유와 수지와의 접착성이 나빠서 보강섬유층과 수지층간의 상분리가 일어나거나 물성이 저하되는 경향이 있다. 따라서, 보강섬유와 열가소성 수지와의 접착성을 우수하게 하여 물성과 내열성이 우수한 섬유강화 연가소성 플라스틱 성형체를 제조하는 방법이 제안된 바 있다. 예를들어, 여러가지 열가소성 수지에 보강섬유와의 접착성을 좋게하여 성형체의 특성을 향상시키기 위하여 미국특허 제4,455,343호 및 제4,457,970호에는 실란등으로 보강섬유 표면을 처리하고 보강섬유 매트를 니들링(NEEDLE PUNCHING)하여 스탬핑성형시에 보강섬유가 잘 흐를 수 있도록 하는 방법이 기재되어 있으나 리브형상부나 얇은 부분에 보강섬유가 충분히 충전되지 않고 물성이 미흡한 단점이 있다.In addition, there is a tendency that phase separation between the reinforcing fiber layer and the resin layer occurs or the physical properties are degraded due to poor adhesion between the reinforcing fiber and the resin. Therefore, there has been proposed a method of producing a fiber-reinforced flexible plastic molded article having excellent adhesion between the reinforcing fibers and the thermoplastic resin and excellent in physical properties and heat resistance. For example, US Pat. Nos. 4,455,343 and 4,457,970 treat the surface of the reinforcing fibers with silane or the like and need the reinforcing fiber mat to improve the properties of the molded body by improving the adhesion of the reinforcing fibers to various thermoplastic resins. NEEDLE PUNCHING has been described a method for flowing the reinforcing fibers well during stamping molding, but there is a disadvantage that the reinforcing fibers are not sufficiently filled in the rib-shaped portion or thin portion and the physical properties are insufficient.
따라서, 본 발명의 목적은 보강섬유와 열가소성 수지와의 접착성이 우수하여 기계적 강도 및 내열성이 뛰어나고 스탬핑성형시에 리브형상부나 얇은 부분까지 보강성유가 흘러 들어가는 섬유강화 열가소성 복합수지성형체의 제조방법을 제공하는데 있다.Accordingly, an object of the present invention is to provide a method for producing a fiber-reinforced thermoplastic composite resin molded article having excellent adhesion between the reinforcing fibers and the thermoplastic resin, excellent mechanical strength and heat resistance, and reinforcing oil flows into the rib or thin part during stamping molding. To provide.
상기 목적을 발성하기 위하여 본 발명에서는 보강성유를 매트형태로 제조하되 종방향과 횡방향 각각에서 다수개의 벤츄리관을 이용하여 보강섬유를 분산시키므로서 보강섬유 배향에 의한 배향성 유발문제를 해결하고, 항침성과 유동성을 향상시키기 위하여 보강단섬유를 사용하고, 보강섬유간 또는 보강섬유와 열가소성수지와의 결합력을 향상시키기 위하여 바인더(binder)를 사용하여 보강섬유 매트를 제조하고 열가소성 복합수지를 항침시켜 판상의 성형체를 제조하므로서 제반특성이 우수한 섬유강화 열가소성 복합수지 성형체를 얻을 수 있었다.In order to achieve the above object, in the present invention, the reinforcing oil is manufactured in the form of a mat, but the problem of causing orientation by reinforcing fiber orientation is solved by dispersing the reinforcing fiber by using a plurality of venturi tubes in each of the longitudinal and transverse directions, In order to improve performance and fluidity, reinforcing short fibers are used, and reinforcing fiber mats are prepared by using binders to improve the bonding strength between reinforcing fibers or reinforcing fibers and thermoplastic resin, By producing a molded article, a fiber-reinforced thermoplastic composite resin molded article having excellent general characteristics was obtained.
본 발명을 좀 더 구체적으로 설명하면 다음과 같다.The present invention is described in more detail as follows.
본 발명에 사용되는 열가소성 수지로는 플리에틸렌, 폴리프로필렌, 폴리스티렌 등과 같은 폴리올레핀 수지에 보강섬유와의 접착성을 향상시키기 위하여 아크릴산, 메타크릴산, 무수말레인산 등을 공중합시킨 복합수지가 바람직하다.As the thermoplastic resin used in the present invention, a composite resin obtained by copolymerizing acrylic acid, methacrylic acid, maleic anhydride, etc. in order to improve adhesion with reinforcing fibers to polyolefin resin such as polyethylene, polypropylene, polystyrene, and the like is preferable.
본 발명에 사용되는 섬유상 보강재는 유리섬유, 탄소섬유, 아라미드섬유 등이 있으며, 스탬핑성형시에 수지와 함께 금형내의 충전될 수 있도록 유동성이 있는 매트형태의 것이 사용된다.Fibrous reinforcing materials used in the present invention include glass fibers, carbon fibers, aramid fibers, and the like, and are used in the form of a mat having fluidity so as to be filled in a mold together with a resin during stamping molding.
매트형태의 섬유상 보강재는 굵기가 3∼25㎛인 모노필라멘트를 30∼300개로 집속하고 제1도에 도시된 장치를 이용하여 보강섬유 매트를 제조한다. 제1도는 본 발명의 보강섬유 매트 제조장치의 개략도로서, 롤러(9)에 의해 이송되는 컨베이어 벨트(8)의 수평면에 대하여 각도가 위로 향하게 배치되고 좌우로 회전이 가능하여 보강섬유(6)가 고루 분산될 수 있도록 횡방향과 종방향의 위치에 설치된 다수개의 벤츄리판(2)을 통하여 보강섬유 로빙(1)으로부터 보강섬유(6)를 흡입하여 컨베이어 벨트(8)상에 분산시킨 다음, 이송되는 분산된 보강섬유(6)에 보강단섬유 분산장치(3)를 이용하여 보강단섬유(7)를 분산하고, 보강섬유(6)간 또는 보강섬유(6)와 열가소성 수지와의 결합력을 좋게하여 물성을 향상시키기 위해서 바인더 분산장치(4)를 사용하여 바인더를 분사한 후에 니들링머시인(5)으로 니들펀칭하므로서 분산된 보강섬유(6)가 서로 엮이고 3차원 구조를 갖는 보강섬유 매트가 구조된다.The fibrous reinforcing material in the form of a mat focuses 30-30 pieces of monofilament having a thickness of 3 to 25 µm and manufactures a reinforcing fiber mat using the apparatus shown in FIG. 1 is a schematic view of the reinforcing fiber mat manufacturing apparatus of the present invention, the angle of which is disposed upward with respect to the horizontal plane of the conveyor belt (8) conveyed by the roller (9) is rotatable from side to side so that the reinforcing fibers (6) The reinforcing fibers 6 are sucked from the reinforcing fiber rovings 1 through a plurality of venturi plates 2 installed in the transverse and longitudinal positions so as to be evenly distributed and dispersed on the conveyor belt 8, and then conveyed. The reinforcing end fibers 7 are dispersed by using the reinforcing end fiber dispersing apparatus 3 in the dispersed reinforcing fibers 6, and the bonding force between the reinforcing fibers 6 or between the reinforcing fibers 6 and the thermoplastic resin is improved. Reinforcing fiber mat having three-dimensional structure where the dispersed reinforcing fibers 6 are woven together by needle punching with a needling machine 5 after spraying a binder using the binder dispersing apparatus 4 to improve physical properties. Is rescued.
상기의 보강섬유 매트 제조시 제2도에 도시된 바와같은 벤츄리관(2)의 하단부 노즐(10)을 통하여 공기를 주입시키므로서 보강섬유(6)를 이동시키고 상단부 노즐(10')을 통하여 압력공기를 주입시키므로서 보강섬유(6)를 여러가닥으로 분리하고 회전력을 준 상태로서 분산이 가능하게 된다. 보강단섬유 분산장치(3)와 바인더 분사장치(4)는 반드시 필요한 것은 아니고, 필요에 따라 사용이 가능하고, 열가소성 복합수지 성형체의유동성을 우수하게 하기 위하여 보강단섬유를 10∼40% 사용하는 것이 효과적이다.In the manufacturing of the reinforcing fiber mat, the reinforcing fiber 6 is moved by injecting air through the lower end nozzle 10 of the venturi tube 2 as shown in FIG. 2 and the pressure through the upper end nozzle 10 '. By injecting air, the reinforcing fibers 6 are separated into several strands and are dispersed in a state in which rotational force is given. The reinforcing short fiber dispersing apparatus 3 and the binder injecting device 4 are not necessarily required, and can be used as necessary, and 10 to 40% of the reinforcing short fiber is used to improve the fluidity of the thermoplastic composite resin molded body. Is effective.
보강섬유가 유리섬유인 경우, 수지와의 접착성을 증대시키기 위하여 커플링제로서 아민계 실란이나 비닐계 실란으로 보강섬유의 표면을 처리한다. 커플링제의 처리는 커플리제 0.01∼5중량부를 물에 용해한 수용액에 침지, 분무, 도포등의 방법으로 완전히 함침시킨 후, 60∼120℃에서 10∼20분 동안 건조시키면서 커플링제를 섬유표면에 반응시킨다.When the reinforcing fiber is glass fiber, the surface of the reinforcing fiber is treated with an amine silane or a vinyl silane as a coupling agent in order to increase the adhesiveness with the resin. The treatment of the coupling agent is completely impregnated with 0.01 to 5 parts by weight of the coupling agent in an aqueous solution dissolved in water by immersion, spraying, or coating, and then the coupling agent is reacted with the fiber surface while drying at 60 to 120 ° C. for 10 to 20 minutes. Let's do it.
커플링제로 사용하는 아민계 실란에는 γ-메타크릴록시-프로필트리메톡시실란, γ-아미노프로필트리메톡시실란, γ-아미노페닐트리메톡시실란 등이 있으며, 비닐계실란에는 비닐트리에톡시실란, 비닐트리메톡시실란, 비닐-트리스- 2-메톡시에톡시)실란 등이 있다.The amine silane used as the coupling agent includes γ-methacryloxy-propyltrimethoxysilane, γ-aminopropyltrimethoxysilane, γ-aminophenyltrimethoxysilane, and the vinyl silane as vinyltriethoxysilane. And vinyltrimethoxysilane and vinyl-tris-2-methoxyethoxy) silane.
또한, 보강섬유가 유리섬유 이외의 것일때는 비스페놀 A형 에폭시수지, 노블락형 에폭시수지, 글리시딜에스테르형 에폭시수지 등과 같은 에폭시수지를 커플리제로 사용한다.In addition, when the reinforcing fibers are other than glass fibers, epoxy resins such as bisphenol A epoxy resins, noblock type epoxy resins, glycidyl ester type epoxy resins, and the like are used as coupling agents.
판상의 섬유강화 열가소성 플라스틱 즉, 매트형상의 보강재에 열가소성 수지를 함침시킨 프리프레그는 보강섬유의 함량이 전체 중량의 10∼70%, 두께는 2∼7㎜인 것이 바람직하다.The prepreg in which the plate-shaped fiber-reinforced thermoplastics, that is, the mat-shaped reinforcing material is impregnated with a thermoplastic resin, preferably contains 10 to 70% of the total weight of the reinforcing fibers and a thickness of 2 to 7 mm.
프리프레그의 두께가 2㎜ 이하이거나 보강섬유의 함량이 전체중량의 70% 이상일 경우에는 스탬핑성형시에 보강섬유의 유동성이 매우 작아서 한쪽에 보강섬유가 물리는 경향이 있으며, 7㎜ 이상이거나 10% 이하일 경우에는 내부까지 열전달이 잘 이루어지지 않고 표면과 내부의 온도차가 커서 불균일한 제품이 얻어진다.If the thickness of the prepreg is 2 mm or less or the content of the reinforcing fiber is 70% or more of the total weight, the flowability of the reinforcing fiber is very small during stamping molding, so the reinforcing fiber tends to be bitten on one side, and the reinforcing fiber is more than 7 mm or less than 10%. In this case, heat transfer is not performed well to the inside, and the temperature difference between the surface and the inside is large, resulting in an uneven product.
본 발명에 따른 섬유강화 열가소성 복합체는 보강섬유와 열가소성 수지와의 접착성이 우수하여 기계적 물성 및 내열성이 우수하고, 스탬핑성형시에 보강섬유의 흐름성이 좋아서 성형품의 전부분에 균일하게 보강섬유가 분포되는 제품을 제공할 수 있다.The fiber-reinforced thermoplastic composite according to the present invention has excellent adhesion between the reinforcing fibers and the thermoplastic resin, and thus has excellent mechanical properties and heat resistance, and has good flowability of the reinforcing fibers at the time of stamping molding. It can provide a distributed product.
다음의 실시예 및 비교예는 본 발명을 좀 더 상세히 설명하는 것이지만, 본 발명의 범주를 한정하는 것은 아니다. 실시예 및 비교에에 있어서 제조한 성형품의 각종 평가는 다음의 방법에 따라 실시하였다.The following examples and comparative examples illustrate the invention in more detail, but do not limit the scope of the invention. Various evaluation of the molded article manufactured in the Example and the comparison was performed according to the following method.
(1) 인장강도(1) tensile strength
ASTM D-638에 의거 실시하였다.It carried out according to ASTM D-638.
(2) 굴곡강도 및 굴곡탄성율(2) flexural strength and flexural modulus
ASTM D-790에 의거 실시하였다.It carried out according to ASTM D-790.
(3) 아이조드 충격강도(3) Izod impact strength
ASTM D-256에 의거 1/8인치 시편에 노치(NOTCHED)를 하여 실시하였다.Notched was performed on the 1/8 inch specimen according to ASTM D-256.
(4) 열변형온도(4) heat deflection temperature
ASTM D-648에 의거 1/8인치 시편에 18.6㎏/㎠의 하중을 가하여 측정하였다.It was measured by applying a load of 18.6 kg / cm 2 to the 1/8 inch specimen according to ASTM D-648.
(5) 흐름성(5) flowability
제조한 열가소성 복합수지의 프리프레그를 5㎝×6㎝ 크기로 절단하여 180℃의 전기오븐에서 10분간 예열한 후 가열된 5㎝×30㎝의 금형에 투입하여 100톤 프레스로30초간 압축하여, 압축후 길이비율로 측정하였다.The prepreg of the thermoplastic composite resin thus prepared was cut into a size of 5 cm × 6 cm, preheated in an electric oven at 180 ° C. for 10 minutes, and then put into a heated 5 cm × 30 cm mold and compressed for 30 seconds using a 100 ton press. It was measured by the length ratio after compression.
[실시예 1]Example 1
멜트인댁스가 4인 폴리프로필렌수지 1000g에 무수말레인산 30g과 시바가이기(CIBA-GEIGY)사의 안정제인 이가녹스(IRGANOX) B215 1.5g을 200℃로 가열된 쌍나사 압출기에 동시에 투입하여 반응시킨 다음 압출하여 칩상태로 만들고, 80℃의 제습건조기에 넣어 건조시킨 다음 캐스팅 머시인(CASTING MACHINE)을 이용하여 0.5㎜ 두께의 시이트(SHEET)로 만든다.30 g of maleic anhydride and 1.5 g of IGANOX B215, a stabilizer of CIBA-GEIGY, were simultaneously added to a twin screw extruder heated at 200 ° C. to 1000 g of polypropylene resin having a melt in dextrose 4 Extruded into chips, dried in an 80 ° C. dehumidifying dryer, and dried into a sheet of 0.5 mm thickness using a casting machine.
커플링제로 γ-메타크릴록시 -프로필트리메톡시실란을 처리한 입경 20μ의 모노필라멘트를 200개로 집속한 유리섬유(한국화이버사 제품)을 제1도에 도시한 설비로 유리섬유 매트를 제조하였다. 유리단섬유와 유리섬유 바인더는 사용하지 않았으며 1㎠당 니들링 수는 20회로 하였다. 최종 매트의 중량은 800g/㎡, 비중은 0.15g/㎤이었다.A glass fiber mat was prepared by using the equipment shown in FIG. 1 of a glass fiber (manufactured by Fiber Korea Corporation) having a monofilament having a particle diameter of 20 μs treated with γ-methacryloxy-propyltrimethoxysilane as a coupling agent as 200. . Short glass fibers and glass fiber binders were not used, and the number of needlings per 1 cm 2 was 20 times. The final mat had a weight of 800 g / m 2 and specific gravity of 0.15 g / cm 3.
이 유리섬유 매트를 사용하여 유리섬유의 함량이 40중량부가 되게 폴리프로필렌시이트를 교대로 적층시킨 다음 190℃로 가열된 핫 프레스(HOT PRESS)에 넣고 10분 동안 함침시켰다.Using this glass fiber mat, polypropylene sheets were alternately laminated so that the glass fiber content was 40 parts by weight, and then placed in a hot press heated to 190 ° C. and impregnated for 10 minutes.
유리섬유 매트에 플리프로필렌시이트를 함침시킨 프리프레그의 두께는 4㎜이었다.The thickness of the prepreg in which the glass fiber mat was impregnated with polypropylene sheet was 4 mm.
[실시예 2 및 비교예 1]Example 2 and Comparative Example 1
실시예 2는 유리섬유 매트 제조에 있어서, 연속장섬유를 90중량부, 5㎝ 길이의 단섬유를 10중량부 사용한 것을 제외하고는 실시예 1과 동일한 방법으로 행하였다. 최종 매트의 중량은 850g/㎡, 비중은 0.17g/㎤이었다.Example 2 was carried out in the same manner as in Example 1 except that 90 parts by weight of continuous long fibers and 10 parts by weight of short fibers having a length of 5 cm were used in the production of glass fiber mats. The final mat weighed 850 g / m 2 and specific gravity 0.17 g / cm 3.
비교예 1은 한국화이버사의 유리단섬유 랜덤매트인 CM300A를 니들링만 행하여 유리섬유 매트를 제조한 것을 제외하고는 실시예 1과 동일한 방법으로 제조하였다.Comparative Example 1 was prepared in the same manner as in Example 1 except that the glass fiber mat was manufactured by only needling the CM300A, a short glass fiber random mat manufactured by Fiber Korea.
상기에서 실시한 실시예 및 비교예의 물성 및 내열성을 측정하여 비교하였다.The physical properties and heat resistance of the Examples and Comparative Examples carried out above were measured and compared.
Claims (5)
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| DE102016223524A1 (en) * | 2016-11-28 | 2018-05-30 | Sc Sebert Tehnologie Srl | Damping and spring arrangement and method for its production |
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