KR20000003555A - Matrix using hybrid system of epoxy/vinyl ester resin - Google Patents

Matrix using hybrid system of epoxy/vinyl ester resin Download PDF

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KR20000003555A
KR20000003555A KR1019980024810A KR19980024810A KR20000003555A KR 20000003555 A KR20000003555 A KR 20000003555A KR 1019980024810 A KR1019980024810 A KR 1019980024810A KR 19980024810 A KR19980024810 A KR 19980024810A KR 20000003555 A KR20000003555 A KR 20000003555A
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matrix
vinyl ester
epoxy
weight
resin
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KR1019980024810A
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KR100275898B1 (en
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이재락
박수진
박원배
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김충섭
한국화학연구소
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/0405Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
    • C08J5/043Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00Use of ingredients characterised by shape
    • C08K7/02Fibres or whiskers
    • C08K7/04Fibres or whiskers inorganic
    • C08K7/14Glass
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation

Abstract

PURPOSE: Matrix containing epoxy resin and vinyl ester resin is provided which has thermal, mechanical and chemical resistant properties, fast hardening and good workability. CONSTITUTION: The title compound is manufactured by hybridizing 80-90 weight % of epoxy resin and 10-20 weight % of vinylester resin. For example, low density C12-C14 denaturalization-type diglycidyl ether of bisphenol-A(YD-114, Gukdo chemical co.) is added 0, 20, 30, 100 weight % of low density bisester(SR-825L, Sewon chemical co.) in presence of 12 phr of triethylenetetramine, 1 phr of methylethylketoneperoxide and 0.5 phr of cobalt-octoate. Flexural rigidity increased about 1%.

Description

에폭시/비닐 에스테르 수지의 하이브리드 시스템을 이용한 매트릭스Matrix using a hybrid system of epoxy / vinyl ester resins

본 발명은 에폭시/비닐 에스테르 수지의 하이브리드 시스템을 이용한 매트릭스에 관한 것이다. 더욱 상세하게는, 기존의 열경화성 수지인 에폭시와 비닐 에스테르를 하이브리드시켜 물성을 향상시컨 새로운 매트릭스에 관한 것이다.The present invention relates to a matrix using a hybrid system of epoxy / vinyl ester resins. More specifically, the present invention relates to a new matrix in which physical properties are improved by hybridizing epoxy and vinyl ester, which are existing thermosetting resins.

에폭시 수지는 열적, 기계적 및 내화학적 성질이 우수하여 코팅재료, 전기절연재료, 복합재료의 매트릭스, 토목·건축재료 등에 널리 사용되고 있다.Epoxy resins are widely used in coating materials, electrical insulating materials, matrix of composite materials, civil engineering and building materials because of their excellent thermal, mechanical and chemical properties.

비닐 에스테르 수지는 에폭시 수지가 갖는 우수한 열적, 기계적 및 내화학적 성질 이외에 불포화 폴리에스테르의 속경화성과 작업 용이성을 함께 갖추고 있어 이미 오래 전부터 여러 분야에서 사용되어 왔다. 특히 내식성과 내화학성을 필요로 하는 분야에서 섬유강화 복합재료의 매트릭스로 많이 사용되고 있는 수지이다.In addition to the excellent thermal, mechanical and chemical properties of epoxy resins, vinyl ester resins have been used in various fields for a long time because they combine the fast curing properties and the ease of operation of unsaturated polyesters. In particular, the resin is widely used as a matrix of fiber reinforced composite materials in fields requiring corrosion resistance and chemical resistance.

근래에는 매트릭스에 대한 새로운 성능들이 요구되고 있으며, 이러한 요구에 맞는 매트릭스의 개발이 절실히 필요하게 되었다. 새로운 매트릭스 개발 방법으로는 매트릭스 자체를 개발하는 방법과 기존의 매트릭스들을 선정하여 이들을 하이브리드시킴으로써 개개의 매트릭스가 갖는 장점을 살리고 단점을 보완시켜 향상된 물성을 지니는 매트릭스를 만드는 방법이 있다. 전자의 경우, 많은 연구시간과 연구비용을 필요로 하므로 후자에 관심이 모아지고 있는 추세이다.In recent years, new capabilities for matrices are required, and the development of matrices that meet these needs is urgently needed. New matrix development methods include the development of the matrix itself and the selection of existing matrices and hybridization of them to take advantage of the advantages of individual matrices and to compensate for the disadvantages to create matrices with improved physical properties. In the former case, a lot of research time and research costs require a lot of attention to the latter.

본 발명은 기존의 열경화성 수지인 에폭시 수지와 비닐 에스테르 수지를 특정 혼합비로 하이브리드시켜 우수한 열적, 기계적 및 내화학적 성질은 물론 속경화성과 작업용이성이 우수한 복합재료용 매트릭스를 제조하는 것을 목적으로 한다.An object of the present invention is to hybridize an epoxy resin and a vinyl ester resin, which is a conventional thermosetting resin, in a specific mixing ratio, and to prepare a matrix for a composite material having excellent thermal, mechanical and chemical resistance properties as well as fast curing and workability.

도 1은 에폭시/비닐 에스테르 수지의 하이브리드 시스템에서 비닐 에스테르의 함량에 따른 굴곡강도 및 굴곡탄성률을 나타낸 도면이다.1 is a view showing the flexural strength and flexural modulus according to the content of the vinyl ester in the hybrid system of epoxy / vinyl ester resin.

도 2는 에폭시/비닐 에스테르 수지의 하이브리드 시스템에서 비닐 에스테르의 함량에 따른 인장강도를 나타낸 도면이다.2 is a view showing the tensile strength according to the content of the vinyl ester in the hybrid system of epoxy / vinyl ester resin.

도 3은 에폭시/비닐 에스테르 수지의 하이브리드 시스템에서 비닐 에스테르의 함량에 따른 충격강도를 나타낸 도면이다.3 is a view showing the impact strength according to the content of the vinyl ester in the hybrid system of epoxy / vinyl ester resin.

종래에는 에폭시 수지의 기계적 특성을 향상시키기 위해서 에폭시 수지에 충전제, 첨가제 및 열가소성 수지 등을 첨가하였다. 그러나, 종래의 경우 에폭시 수지에 대한 모노머의 선정이 용이하지 않고 첨가제에 의한 부반응이 일어날 수 있어 가공성 등에 악영향을 미칠 수 있는 단점이 있다.Conventionally, fillers, additives, thermoplastic resins, and the like have been added to epoxy resins in order to improve the mechanical properties of the epoxy resins. However, in the conventional case, it is not easy to select a monomer for the epoxy resin and side reactions may occur due to additives, which may adversely affect workability.

본 발명자들은 이러한 단점을 해결하고자 연구를 거듭한 결과, 에폭시 비닐에스테르를 특정 비율로 하이브리드시킴으로써 기계적 특성은 물론 속경화성 및 작업용이성을 향상시켜 작업공정을 단순화시키고 작업시간을 크게 단축시킨다는 사실을 발견하고 본 발명을 완성하기에 이르렀다.The present inventors have conducted research to solve these shortcomings, and found that hybridization of epoxy vinyl ester at a specific ratio improves mechanical properties as well as fast curing and ease of use, thereby simplifying the work process and significantly reducing the work time. The present invention has been completed.

또한, 본 발명에 따라 에폭시에 값싼 비닐에스테르를 첨가함으로써 매트릭스의 비용을 크게 절감할 수 있는 장점이 있다.In addition, according to the present invention by adding a cheap vinyl ester to the epoxy there is an advantage that can significantly reduce the cost of the matrix.

본 발명에 따라 에폭시에 비닐에스테르를 하이브리드시키면 열경화나 상온 경화에 의해 매트릭스를 제조할 수 있는 장점이 있다.Hybridization of vinyl esters to epoxy according to the present invention has the advantage that the matrix can be prepared by thermosetting or room temperature curing.

본 발명은 에폭시 수지 80 내지 90중량%와 비닐 에스테르 수지 10 내지 20중량%를 하이브리드시킨 조성물을 포함하는 매트릭스를 제공한다.The present invention provides a matrix comprising a composition of 80 to 90% by weight epoxy resin and 10 to 20% by weight vinyl ester resin.

도1, 2 및 3에서 나타낸 바와같이, 비닐에스테르의 함량이 20중량%를 초과하면 굴곡강도, 굴곡탄성률, 인장강도 및 충격강도가 급격히 떨어지고, 또한 비닐에스테르의 함량이 10중량% 미만인 경우는 상기 물성치가 약간 떨어진다.1, 2 and 3, when the content of the vinyl ester exceeds 20% by weight, the flexural strength, the flexural modulus, the tensile strength and the impact strength are sharply dropped, and when the content of the vinyl ester is less than 10% by weight, The physical properties drop slightly.

본 발명은 또한 에폭시 수지 80 내지 90중량%와 비닐 에스테르 수지 10 내지 20중량%를 하이브리드시킨 조성물을 로울러에 의해 섬유강화 복합재료에 도포시켜 매트릭스를 제조하는 방법을 제공한다.The present invention also provides a method of producing a matrix by applying a composition obtained by hybridizing 80 to 90% by weight of an epoxy resin and 10 to 20% by weight of a vinyl ester resin to a fiber reinforced composite material by roller.

본 발명에 따른 매트릭스는 바인더(binder)로서의 역할을 하기 위해서 섬유강화 복합재료에 본 발명에 따른 조성물을 도포시켜 만들 수 있다. 강화 섬유로는 유리섬유를 사용하는 것이 바람직하다.The matrix according to the invention can be made by applying the composition according to the invention to a fiber reinforced composite in order to act as a binder. It is preferable to use glass fiber as the reinforcing fiber.

본 발명에 따른 매트릭스는 에폭시 수지 80 내지 90중량%와 비닐 에스테르 수지 10 내지 20중량%를 하이브리드시킨 조성물을 로울러에 의해 섬유강화 복합재료에 도포시킴으로써 제조된다. 매트릭스 조성물은 100℃∼150℃에서 1 내지 2시간 동안 후경화를 실시하여 물성을 증가시킨다.The matrix according to the present invention is prepared by applying a composition obtained by hybridizing 80 to 90% by weight of epoxy resin and 10 to 20% by weight of vinyl ester resin to a fiber reinforced composite material by roller. The matrix composition is subjected to post curing at 100 ° C. to 150 ° C. for 1 to 2 hours to increase physical properties.

후경화 시스템은 경화과정을 거친 경화물의 물성을 증가시키기 위해 실시되는 방법중 하나이다. 인위적으로 열에너지를 가해줌으로써 경화물 내부에 존재하는 용제나 기타 불순물을 제거하고, 소량으로 존재할 수 있는 미반응물에 에너지를 가하여 반응하도록 하여 물성을 증가시키는 것이 목적이다.Post-cure system is one of the methods carried out to increase the properties of the cured cured product. The purpose is to increase the physical properties by removing the solvent or other impurities present in the cured product by artificially applying thermal energy and adding energy to the unreacted material that may be present in a small amount.

이하, 실시예에서 본 발명을 더욱 상세히 설명하지만, 본 실시예가 본 발명의 범위를 한정하는 것은 아니다.Hereinafter, although an Example demonstrates this invention in more detail, this Example does not limit the scope of the present invention.

실시예 1Example 1

저점도를 갖는 C12-C14변성타입의 비스페놀-A의 디글리시딜에테르(Diglycidyl Ether of Bisphenol-A, "DGEBA")계 에폭시 "YD-114"[국도화학(주) 제품]에 저점도이며 삼액형으로 제조된 비스페놀계 비닐에스테르 "SR-825L"[세원화성(주) 제품]을 0, 10, 20, 30, 100중량%로 첨가하여 하이브리드시켜 매트릭스 조성물을 제조하였다.Low viscosity C 12 -C 14 -A-modified bisphenol type diglycidyl ether of (Diglycidyl Ether of Bisphenol-A, "DGEBA") based epoxy "YD-114" [Kukdo Chemical Co., Ltd. product; a trough having a The bisphenol-based vinyl ester "SR-825L" (manufactured by Sewon Chemical Co., Ltd.), which was prepared in a three-component form, was added at 0, 10, 20, 30, and 100% by weight to prepare a matrix composition.

이때 사용된 아민계 에폭시 경화제 트리에틸렌테트라민(TETA), 비닐 에스테르 개시제 메틸에틸케톤퍼옥시드(MEKP) 및 비닐 에스테르 촉진제 코발트-옥토에이트(Co-Oct)의 함량은 각각 12phr, 1phr, 0.5phr로 고정하였다. 제조된 비닐 에스테르 함량 변화에 따른 매트릭스 조성물의 변형속도(cross-head speed)를 2㎜/분으로 고정하고, 지지대 사이의 거리와 시편 두께의 비율을 16:1로 고정한 후, 만능 시험기(Instron #1125)를 사용하여 굴곡강도 및 굴곡탄성률을 측정하였다. 그 결과, 도 1에서 나타낸 바와같이 비닐 에스테르가 각각 10중량% 및 20중량% 첨가된 경우, 에폭시 자체보다 굴곡강도가 약 1% 및 2% 증가하였으며, 굴곡탄성률의 경우 거의 같은 수준을 나타냈다.The content of the amine epoxy curing agent triethylenetetramine (TETA), vinyl ester initiator methylethyl ketone peroxide (MEKP) and vinyl ester promoter cobalt-octoate (Co-Oct) used was 12 phr, 1 phr, 0.5 phr, respectively. Fixed. After fixing the cross-head speed of the matrix composition according to the produced vinyl ester content change at 2 mm / min, and fixing the ratio of the distance between the supports and the specimen thickness at 16: 1, the universal testing machine (Instron # 1125) was used to measure the flexural strength and flexural modulus. As a result, as shown in Figure 1, when the vinyl ester is added 10% by weight and 20% by weight, respectively, the flexural strength was increased by about 1% and 2% than the epoxy itself, the flexural modulus was almost the same level.

실시예 2Example 2

중점도를 갖는 DGEBA계 에폭시 "YD-128"[국도화학(주) 제품]에 저점도이며 삼액형으로 제조된 비스페놀계 비닐에스테르 "SR-825L"[세원화성(주) 제품]을 상기 실시예 1과 같이 하이브리드시켜 매트릭스 조성물을 제조하였다. 변형속도를 5㎜/분으로 고정하고, 만능 시험기를 사용하여 인장강도를 측정한 결과 비닐 에스테르가 각각 10중량% 및 20중량% 첨가된 경우, 도 2에서 나타낸 바와같이 에폭시 자체보다 인장강도가 약 4% 및9% 증가하였다.The bisphenol-based vinyl ester "SR-825L" [Sewon Hwasung Co., Ltd.] produced in a three-pack type with low viscosity in DGEBA epoxy "YD-128" [product of Kukdo Chemical Co., Ltd.] having a medium viscosity is obtained in the above examples. Hybrid as in 1 to prepare a matrix composition. When the strain rate was fixed at 5 mm / min and the tensile strength was measured using a universal testing machine, when 10 wt% and 20 wt% of the vinyl ester were added, the tensile strength was lower than that of the epoxy itself as shown in FIG. 2. 4% and 9% increase.

실시예 3Example 3

고점도를 갖는 반고형 타입의 DGEBA계 에폭시 "YD-134"[국도화학(주) 제품]에 저점도이며 삼액형으로 제조된 비스페놀계 비닐에스테르 "SR-825L"[세원화성(주) 제품]을 상기 실시예 1과 같이 하이브리드시켜 매트릭스 조성물을 제조하였다. 플라스틱 충격 시험기를 사용하여 충격강도를 측정하였다. 그 결과, 도 3에서 나타낸 바와같이 역시 비닐 에스테르가 각각 10중량% 및 20중량% 첨가된 경우, 에폭시 자체보다 충격강도가 약 2% 및 3% 증가하였다.Semi-solid type DGEBA epoxy "YD-134" [Kukdo Chemical Co., Ltd.] with high viscosity and low viscosity and three-component bisphenol vinyl ester "SR-825L" manufactured by Sewon Chemical Co., Ltd. Hybridization was carried out as in Example 1 to prepare a matrix composition. Impact strength was measured using a plastic impact tester. As a result, as shown in Figure 3 also when the vinyl ester is added 10% by weight and 20% by weight, respectively, the impact strength was increased by about 2% and 3% than the epoxy itself.

실시예 4Example 4

저점도를 갖는 C12-C14변성타입의 DGEBA계 에폭시 "YD-114"[국도화학(주) 제품]에 저점도이며 삼액형으로 제조된 비스페놀계 비닐에스테르 "SR-825L"[세원화성(주) 제품]을 상기 실시예 1과 같이 하이브리드시켜 매트릭스 조성물을 제조한 후, 섬유강화재로 쓰인 네덜란드의 Parabeam B.V.사가 제조한 삼차원 유리직물에 자체 제작한 알루미늄 로울러를 사용하여 도포시켜 시편을 제조하였다. 제조된 매트릭스 변화에 따른 섬유강화 복합재료의 변형속도를 5㎜/분으로 고정하고, 만능 시험기를 사용하여 압축강도를 측정한 결과, 매트릭스에 불포화 폴리에스테르가 각각 10중량% 및 20중량% 첨가된 수지를 사용한 경우, 에폭시 자체를 매트릭스로 사용한 경우의 압축강도에 비해 약 1% 및 2%의 증가를 나타냈다.Low viscosity of the C 12 -C 14 DGEBA-type epoxy-modified type "YD-114" [Kukdo Chemical Co., Ltd. product; having a low viscosity is a three-part bisphenol-based vinyl ester "SR-825L" [prepared by the three won Mars ( Note) product] was prepared by hybridization as in Example 1, and then coated on a three-dimensional glass fabric manufactured by Parabeam BV of the Netherlands used as a fiber reinforcement using a self-made aluminum roller to prepare a specimen. The strain rate of the fiber-reinforced composite material according to the prepared matrix was fixed at 5 mm / min and the compressive strength was measured using a universal testing machine. As a result, 10 wt% and 20 wt% of unsaturated polyester were added to the matrix In the case of using the resin, an increase of about 1% and 2% was shown compared to the compressive strength when the epoxy itself was used as the matrix.

실시예 5Example 5

중점도를 갖는 DGEBA계 에폭시 "YD-114"[국도화학(주) 제품]에 저점도이며 삼액형으로 제조된 비스페놀계 비닐에스테르 "SR-825L"[세원화성(주) 제품]을 상기 실시예 2와 같이 하이브리드시켜 상기 실시예 4와 같이 시편을 제조하였다. 제조된 매트릭스 변화에 따른 섬유강화 복합재료의 변형속도를 5㎜/분으로 고정하고, 만능 시험기를 사용하여 압축강도를 측정한 결과, 매트릭스에 불포화 폴리에스테르가 각각 10중량% 및 20중량% 첨가된 수지를 사용한 경우, 에폭시 자체를 매트릭스로 사용한 경우의 압축강도에 비해 약 2% 및 3%의 증가를 나타냈다.The bisphenol-based vinyl ester "SR-825L" [Sewon Hwaseong Co., Ltd.] produced in a three-pack type with low viscosity in DGEBA epoxy "YD-114" [product of Kukdo Chemical Co., Ltd.] having a medium viscosity is obtained in the above examples. Hybrid as in 2 to prepare a specimen as in Example 4. The strain rate of the fiber-reinforced composite material according to the prepared matrix was fixed at 5 mm / min and the compressive strength was measured using a universal testing machine. As a result, 10 wt% and 20 wt% of unsaturated polyester were added to the matrix, respectively. In the case of using the resin, an increase of about 2% and 3% was shown compared to the compressive strength when the epoxy itself was used as the matrix.

실시예 6Example 6

고점도를 갖는 반고형 타입의 DGEBA계 에폭시 "YD-134"[국도화학(주) 제품]에 저점도이며 삼액형으로 제조된 비스페놀계 비닐에스테르 "SR-825L"[세원화성(주) 제품]을 상기 실시예 3과 같이 하이브리드시켜 상기 실시예 4와 같이 시편을 제조하였다. 제조된 매트릭스 변화에 따른 섬유강화 복합재료의 변형속도를 5㎜/분으로 고정하고, 만능 시험기를 사용하여 압축강도를 측정한 결과, 매트릭스에 불포화 폴리에스테르가 각각 10중량% 및 20중량% 첨가된 수지를 사용한 경우, 에폭시 자체를 매트릭스로 사용한 경우의 압축강도에 비해 약 3% 및 4%의 증가를 나타냈다.Semi-solid type DGEBA epoxy "YD-134" [Kukdo Chemical Co., Ltd.] with high viscosity and low viscosity and three-component bisphenol vinyl ester "SR-825L" manufactured by Sewon Chemical Co., Ltd. The specimen was prepared as in Example 4 by hybridization as in Example 3. The strain rate of the fiber-reinforced composite material according to the prepared matrix was fixed at 5 mm / min and the compressive strength was measured using a universal testing machine. As a result, 10 wt% and 20 wt% of unsaturated polyester were added to the matrix, respectively. In the case of using the resin, it showed about 3% and 4% increase compared to the compressive strength when the epoxy itself was used as the matrix.

실시예 7Example 7

저점도를 갖는 C12-C14변성타입의 DGEBA계 에폭시 "YD-114"[국도화학(주) 제품]에 저점도이며 삼액형으로 제조된 비스페놀계 비닐에스테르 "SR-825L"[세원화성(주) 제품]을 상기 실시예 1과 같이 하이브리드시켜 매트릭스 조성물을 제조한 후에 100℃에서 1시간 동안 후경화를 실시하였다. 본 발명에서 후경화 후의 매트릭스를 상기 실시예 1과 같이 측정하였다. 그 결과, 도 1에서 나타낸 바와같이 역시 비닐 에스테르가 각각 10중량% 및 20중량% 첨가된 경우 에폭시 자체의 굴곡강도에 비해 약 1% 및 2%의 증가를 보이며, 굴곡탄성률의 경우 에폭시 자체의 값과 유사한 값을 나타냈다.Low viscosity of the C 12 -C 14 DGEBA-type epoxy-modified type "YD-114" [Kukdo Chemical Co., Ltd. product; having a low viscosity is a three-part bisphenol-based vinyl ester "SR-825L" [prepared by the three won Mars ( NOTE) Products were hybridized as in Example 1 to prepare a matrix composition, and then subjected to post-curing at 100 ° C. for 1 hour. In the present invention, the matrix after the post cure was measured in the same manner as in Example 1. As a result, as shown in FIG. 1, when the vinyl ester was added 10 wt% and 20 wt%, respectively, the flexural strength of the epoxy itself was increased by about 1% and 2%, and the flexural modulus was the value of the epoxy itself. Values similar to

실시예 8Example 8

중점도를 갖는 DGEBA계 에폭시 "YD-128"[국도화학(주) 제품]에 저점도이며 삼액형으로 제조된 비스페놀계 비닐에스테르 "SR-825L"[세원화성(주) 제품]을 상기 실시예 1과 같이 하이브리드시켜 매트릭스 조성물을 제조한 후에 120℃에서 1시간 30분 동안 후경화를 실시하였다. 후경화 후의 매트릭스를 상기 실시예 2와 같이 측정하였다. 그 결과, 도 2에서 나타낸 바와같이 역시 비닐 에스테르가 각각 10중량% 및 20중량% 첨가될 경우, 에폭시 자체의 인장강도에 비해 약 3% 및 4% 증가하였다.The bisphenol-based vinyl ester "SR-825L" [Sewon Hwasung Co., Ltd.] produced in a three-pack type with low viscosity in DGEBA epoxy "YD-128" [product of Kukdo Chemical Co., Ltd.] having a medium viscosity is obtained in the above examples. After the hybridization as described in 1 to prepare a matrix composition was subjected to post-cure at 120 ℃ 1 hour 30 minutes. The matrix after postcure was measured in the same manner as in Example 2. As a result, as shown in FIG. 2, when 10% by weight and 20% by weight of vinyl ester were added, the tensile strength of the epoxy itself increased by about 3% and 4%.

실시예 9Example 9

고점도를 갖는 반고형 타입의 DGEBA계 에폭시 "YD-134"[국도화학(주) 제품]에 저점도이며 삼액형으로 제조된 비스페놀계 비닐에스테르 "SR-825L"[세원화성(주) 제품]을 상기 실시예 1과 같이 하이브리드시켜 매트릭스 조성물을 제조한 후에 150℃에서 2시간 동안 후경화를 실시하였다. 경화 후의 매트릭스를 상기 실시예 3과 같이 측정하였다. 그 결과, 도 3에서 나타낸 바와같이 역시 비닐 에스테르가 각각 10중량% 및 20중량% 첨가될 경우, 에폭시 자체의 충격강도에 비해 약 1% 및 2% 증가하였다.Semi-solid type DGEBA epoxy "YD-134" [Kukdo Chemical Co., Ltd.] with high viscosity and low viscosity and three-component bisphenol vinyl ester "SR-825L" manufactured by Sewon Chemical Co., Ltd. After the hybridization as in Example 1 to prepare a matrix composition was subjected to post-curing at 150 ℃ for 2 hours. The matrix after curing was measured in the same manner as in Example 3. As a result, as shown in Figure 3 also when the vinyl ester is added 10% by weight and 20% by weight, respectively, about 1% and 2% increase compared to the impact strength of the epoxy itself.

본 발명에 따른 매트릭스는 기존의 열경화성 수지인 에폭시 수지와 비닐 에스테르 수지를 특정 혼합비로 하이브리드시킴으로써 열적, 기계적 및 내화학적 성질은 물론 속경화성과 작업용이성이 우수하다.The matrix according to the present invention is excellent in thermal hardening and workability as well as thermal, mechanical and chemical resistance by hybridizing the existing thermosetting resin epoxy resin and vinyl ester resin in a specific mixing ratio.

Claims (5)

에폭시 수지 80 내지 90중량%와 비닐 에스테르 수지 10 내지 20중량%를 하이브리드시킨 조성물을 포함하는 매트릭스.A matrix comprising a composition of 80 to 90% by weight epoxy resin and 10 to 20% by weight vinyl ester resin. 제 1항에 있어서, 상기 하이브리드된 매트릭스가 섬유강화 복합재료를 포함하는 매트릭스.The matrix of claim 1, wherein the hybridized matrix comprises a fiber reinforced composite. 제 2항에 있어서, 강화섬유가 유리섬유인 것을 특징으로 하는 매트릭스.3. The matrix according to claim 2, wherein the reinforcing fibers are glass fibers. 에폭시 수지 80 내지 90중량%와 비닐 에스테르 수지 10 내지 20중량%를 하이브리드시킨 조성물을 로울러에 의해 섬유강화 복합재료에 도포시켜 매트릭스를 제조하는 방법.A method of producing a matrix by applying a composition obtained by hybridizing 80 to 90% by weight of an epoxy resin and 10 to 20% by weight of a vinyl ester resin to a fiber-reinforced composite by a roller. 제 4항에 있어서, 에폭시 수지를 100 내지 150℃에서 1 내지 2시간 동안 후경화를 실시한 후 비닐 에스테르를 첨가하는 것을 특징으로 하는 매트릭스의 제조 방법.The process for producing a matrix according to claim 4, wherein the epoxy resin is subjected to post-curing at 100 to 150 ° C for 1 to 2 hours and then vinyl ester is added.
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Publication number Priority date Publication date Assignee Title
CN115181396A (en) * 2022-06-17 2022-10-14 航天材料及工艺研究所 Preparation method of vinyl resin and composite material with controllable viscosity and gel time

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115181396A (en) * 2022-06-17 2022-10-14 航天材料及工艺研究所 Preparation method of vinyl resin and composite material with controllable viscosity and gel time
CN115181396B (en) * 2022-06-17 2023-08-29 航天材料及工艺研究所 Preparation method of vinyl resin and composite material with controllable viscosity and gel time

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