KR20220120753A - Non-asbestos gasket composition having high heat resistant and gasket structure using the same - Google Patents
Non-asbestos gasket composition having high heat resistant and gasket structure using the same Download PDFInfo
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Abstract
Description
본 발명은 가스켓 조성물로 이루어지는 탄성층 시트 사이에 금속 소재의 지지재를 삽입함으로써, 고온·고압에서 가스켓을 이루는 유·무기 조성물의 결합력을 유지하면서 연속사용온도 320℃ 이상의 내열성과 유연성 및 고탄성도를 유지할 수 있을 뿐만 아니라, 종래 탄소섬유나 그라파이트가 적용된 가스켓의 단점을 해결할 수 있도록 하는 비석면 가스켓 조성물 및 이를 이용하여 제조되는 가스켓 구조에 관한 것이다.The present invention provides heat resistance, flexibility, and high elasticity at a continuous use temperature of 320° C. or higher while maintaining the bonding force of the organic and inorganic compositions constituting the gasket at high temperature and high pressure by inserting a metal support material between the elastic layer sheets made of the gasket composition. The present invention relates to a non-asbestos gasket composition that can be maintained as well as solve the disadvantages of conventional gaskets to which carbon fiber or graphite is applied, and a gasket structure manufactured using the same.
일반적으로 가스켓은 석유화학, 발전소, 조선해양공업, 중공업, 건설, 해상플랜트 등 산업 전 분야에 광범위 실링(sealing) 재료로 사용되는 제품으로 배관내 유체의 누설방지 등을 목적으로 하며, 특히 고온의 열유, 유가스 등의 기름에서 우수한 밀봉성이 요구된다.In general, gaskets are products used as sealing materials in a wide range of industries including petrochemicals, power plants, shipbuilding and offshore industry, heavy industry, construction, and offshore plants. Excellent sealing properties are required in oils such as heat oil and oil gas.
보다 구체적으로 가스켓의 가장 중요한 성능은 유체에 대한 기밀성과 내열성을 들 수 있다. 특히, 최근의 가스켓의 주요 요구특성은 고내열성을 가지는 가스켓 성능을 바이어가 요구하고 있으며, 선진국을 비롯한 국내외 주요 사용처에서도 유지 및 관리 비용절감을 이유로 가스켓의 내열성 향상을 요구하고 있는 실정이다. More specifically, the most important performance of the gasket is airtightness and heat resistance to the fluid. In particular, as a major requirement of gaskets in recent years, buyers are demanding gasket performance with high heat resistance, and major domestic and overseas users, including developed countries, are also demanding improved heat resistance of gaskets for the reason of reducing maintenance and management costs.
현재 고내열성이 요구되는 가스켓의 경우 기존의 유기바인더와 세라믹으로 구성된 복합물로는 성능에 한계가 있어 내열특성 향상시키기 위한 소재 기술로는 대표적으로 탄소섬유, 흑연 그라파이트를 활용한 제품을 들 수 있다. In the case of gaskets that currently require high heat resistance, the performance of the existing composite composed of organic binders and ceramics is limited. As a material technology to improve heat resistance, representatively, products using carbon fiber and graphite graphite are mentioned.
관련 선행기술로써 특허문헌 1에서는 그라파이트(Graphite)를 이용한 가스켓으로써, 그라파이트와 바인더 역할을 하는 결합재를 2:1로 혼합된 혼합물로 가스켓을 제조함으로써, 가스켓에 대한 기밀성, 진동 흡수성, 내식성, 내마모성 등을 향상시키고자 하였다.As a related prior art, in Patent Document 1, as a gasket using graphite, the gasket is manufactured with a mixture of graphite and a binder serving as a binder in a 2:1 ratio, thereby providing airtightness, vibration absorption, corrosion resistance, abrasion resistance, etc. to the gasket. was intended to improve.
그리고 특허문헌 2는 고온 사용시에서도 인장 강도의 저하가 작고, 응력 완화가 작으며, 고온역에서도 사용 가능한 비석면계 시트 형상 가스켓에 관한 것으로, 석면 이외의 기재섬유, 수소화 아크릴로니트릴부타디엔의 라텍스, 충전재 및 고무 약품을 함유하는 시트 형성용 조성물을 성형하여 시트 형상 가스켓을 제조하되, 상기 충전재가 흑연 단독 또는 흑연과 이 흑연 이외의 충전재의 병용인 것을 특징으로 하는 시트 형상 가스켓을 제안하였다.And Patent Document 2 relates to a non-asbestos-based sheet-shaped gasket that has a small decrease in tensile strength even when used at high temperatures, has a small stress relaxation, and can be used even in a high temperature range, and includes base fibers other than asbestos, hydrogenated acrylonitrile-butadiene latex, fillers and a sheet-forming gasket by molding a composition for forming a sheet containing a rubber chemical, wherein the filler is graphite alone or graphite and a filler other than graphite are used in combination.
그러나 탄소섬유의 경우 제품단가가 높다는 단점이 있으며, 상기 종래기술과 같은 흑연 그라파이트의 경우에는 가공성, 취급성이 떨어지며, 강성 및 유연성에 한계가 있다.However, carbon fiber has a disadvantage in that the product cost is high, and in the case of graphite graphite as in the prior art, workability and handling properties are poor, and there are limitations in rigidity and flexibility.
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 가스켓 조성물로 이루어지는 탄성층 시트 사이에 금속 소재의 지지재를 삽입함으로써, 고온·고압에서 가스켓을 이루는 유·무기 조성물의 결합력을 유지하면서 연속사용온도 320℃ 이상의 내열성과 유연성 및 고탄성도를 유지할 수 있을 뿐만 아니라, 종래 탄소섬유나 그라파이트가 적용된 가스켓의 단점을 해결할 수 있도록 함을 과제로 한다.The present invention is to solve the above problems, by inserting a metal support material between the elastic layer sheets made of the gasket composition, while maintaining the bonding force of the organic and inorganic composition constituting the gasket at high temperature and high pressure, continuous use temperature It is a task to not only maintain heat resistance of 320°C or higher, flexibility, and high elasticity, but also solve the disadvantages of conventional gaskets to which carbon fiber or graphite is applied.
본 발명은 비석면 가스켓 조성물에 있어서, 아크릴로니트릴부타디엔고무 70 ~ 90 중량% 및 부타디엔고무 10 ~ 30 중량%로 이루어진 기재 100 중량부에 대하여, 보강성 섬유 10 ~ 30 중량부, 무기충전제 200 ~ 400 중량부, 무기바인더 20 ~ 50 중량부, 가스켓 조성물용 첨가제 및 과산화물 가교제로 이루어지는 것을 특징으로 하는, 내열성이 우수한 비석면 가스켓 조성물을 과제의 해결 수단으로 한다.The present invention relates to a non-asbestos gasket composition, based on 100 parts by weight of a base material comprising 70 to 90% by weight of acrylonitrile butadiene rubber and 10 to 30% by weight of butadiene rubber, 10 to 30 parts by weight of reinforcing fibers, 200 to inorganic fillers A non-asbestos gasket composition having excellent heat resistance, characterized in that it consists of 400 parts by weight, 20 to 50 parts by weight of an inorganic binder, an additive for a gasket composition, and a peroxide crosslinking agent is used as a means to solve the problem.
여기서 상기 보강 섬유는 아라미드 섬유 또는 유리섬유 중에서 단독 또는 병용하여 사용하고, 상기 무기충전제는 고령토, 황상바륨, 마이카 중에서 단독 또는 2종 이상 병용하여 사용하며, 상기 무기바인더는 콜로이드 실라카, 실리카졸 또는 규산염 중에서 단독 또는 2종 이상 병용하여 사용하고, 상기 가스켓용 첨가제는 상기 기재 100 중량부를 기준으로, 금속산화물 5 ~ 10 중량부, 스테아린산 1 ~ 3 중량부, 진크디아크릴레이트 5 ~ 10 중량부 및 산화티타늄 5 ~ 20 중량부로 이루어지며, 상기 과산화물 가교제는 2,5-비스(터트부틸퍼옥시)-2,5-디메틸-3-헥엔, 디터트부틸퍼옥사이드, 2,5-비스(터트부틸퍼옥시)-2,5-디메틸-헥엔, 디벤조일퍼옥사이드, 비스(터트부틸퍼옥시이소프로필)벤젠, 부틸 4,4-비스(터트부틸퍼옥시)발러레이트, 1,1-비스(터트부틸퍼옥시)3,3,5-트리메틸클로로헥산, 터트부틸퍼옥시벤조에이트, 라우릴퍼옥사이드 또는 디큐밀퍼옥사이드 중에서 단독 또는 병용하여 사용하는 것이 바람직하다.Here, the reinforcing fiber is used alone or in combination among aramid fibers or glass fibers, the inorganic filler is used alone or in combination of two or more of kaolin, barium sulfate, and mica, and the inorganic binder is colloidal silica, silica sol or It is used alone or in combination of two or more types of silicates, and the gasket additive is based on 100 parts by weight of the base material, 5 to 10 parts by weight of metal oxide, 1 to 3 parts by weight of stearic acid, 5 to 10 parts by weight of zinc diacrylate, and 5 to 20 parts by weight of titanium oxide, and the peroxide crosslinking agent is 2,5-bis(tertbutylperoxy)-2,5-dimethyl-3-hexene, ditertbutylperoxide, 2,5-bis(tertbutylperoxy) Peroxy)-2,5-dimethyl-hexene, dibenzoyl peroxide, bis(tertbutylperoxyisopropyl)benzene, butyl 4,4-bis(tertbutylperoxy)valerate, 1,1-bis(tert) Butyl peroxy) 3,3,5-trimethylchlorohexane, tertbutylperoxybenzoate, lauryl peroxide or dicumyl peroxide is preferably used alone or in combination.
한편, 본 발명은 상기와 같은 조성물을 이용하여 제조되는 가스켓 구조에 있어서, 상기 조성물로 이루어지는 한쌍의 탄성층 시트(10) 사이에 지지재(20)가 삽입되어 이루어지는 것을 특징으로 하는, 가스켓 구조를 과제의 해결 수단으로 한다.On the other hand, in the present invention, in the gasket structure manufactured using the composition as described above, the gasket structure is characterized in that the
여기서, 상기 상기 지지재(20)는 금속 소재의 메쉬망(mesh net)인 것이 바람직하다.Here, the
본 발명은 고온·고압에서 가스켓을 이루는 유·무기 조성물의 결합력을 유지하면서 연속사용온도 320℃ 이상의 내열성과 유연성 및 고탄성도를 유지할 수 있을 뿐만 아니라, 종래 탄소섬유나 그라파이트가 적용된 가스켓의 단점을 해결할 수 있는 장점이 있다.The present invention can not only maintain heat resistance, flexibility and high elasticity at a continuous use temperature of 320° C. or higher while maintaining the bonding strength of the organic and inorganic composition constituting the gasket at high temperature and high pressure, but also solve the disadvantages of the conventional gasket to which carbon fiber or graphite is applied. There are advantages that can be
도 1은 본 발명에 따른 가스켓의 구조를 나타낸 사시도 및 분해사시도1 is a perspective view and an exploded perspective view showing the structure of a gasket according to the present invention;
본 발명은 내열성이 우수한 비석면 가스켓 조성물 및 이를 이용하여 제조되는 가스켓 구조에 관한 것으로써, 본 발명의 기술적 구성을 이해하는데 필요한 부분만이 설명되며 그 이외 부분의 설명은 본 발명의 요지를 흩트리지 않도록 생략될 것이라는 것을 유의하여야 한다.The present invention relates to a non-asbestos gasket composition having excellent heat resistance and a gasket structure manufactured using the same, and only the parts necessary for understanding the technical configuration of the present invention will be described. It should be noted that this will be omitted.
먼저, 본 발명에 따른 내열성이 우수한 비석면 가스켓 조성물을 설명하면 다음과 같다.First, a non-asbestos gasket composition having excellent heat resistance according to the present invention will be described as follows.
본 발명에 따른 내열성이 향상된 비석면 가스켓 조성물은, 아크릴로니트릴부타디엔고무 70 ~ 90 중량% 및 부타디엔고무 10 ~ 30 중량%로 이루어진 기재 100 중량부에 대하여, 보강성 섬유 10 ~ 30 중량부, 무기충전제 200 ~ 400 중량부, 무기바인더 20 ~ 50 중량부, 가스켓 조성물용 첨가제 및 과산화물 가교제로 이루어지는 것을 특징으로 한다.The non-asbestos gasket composition with improved heat resistance according to the present invention contains 10 to 30 parts by weight of reinforcing fibers with respect to 100 parts by weight of a base material comprising 70 to 90% by weight of acrylonitrile butadiene rubber and 10 to 30% by weight of butadiene rubber, 10 to 30 parts by weight of inorganic 200 to 400 parts by weight of a filler, 20 to 50 parts by weight of an inorganic binder, an additive for a gasket composition, and a peroxide crosslinking agent.
상기 아크릴로니트릴부타디엔고무는 기재 100 중량부를 이루기 위하여, 70 ~ 90 중량%를 사용하는 것이 바람직하다. 사용량이 70 중량% 미만일 경우, 가스켓의 내유특성이 저하되는 문제가 있으며, 90 중량%를 초과할 경우에는 내열성 개선효과가 떨어지는 문제가 있다.The acrylonitrile butadiene rubber is preferably used in an amount of 70 to 90% by weight in order to constitute 100 parts by weight of the base material. When the amount used is less than 70% by weight, there is a problem in that the oil resistance of the gasket is lowered, and when it exceeds 90% by weight, there is a problem in that the effect of improving heat resistance is deteriorated.
상기 부타디엔고무는 기재 100 중량부를 이루기 위하여 10 ~ 30 중량%를 사용하는 것이 내열성 개선을 위해 바람직하다. 사용량이 10 중량% 미만일 경우, 가스켓의 내열성이 개선 효과가 미비하며, 30 중량%를 초과할 경우에는 내유성이 저하되며, 가공성이 떨어지는 문제가 있다.The butadiene rubber is preferably used in an amount of 10 to 30% by weight to form 100 parts by weight of the base material to improve heat resistance. When the amount used is less than 10% by weight, the effect of improving the heat resistance of the gasket is insignificant, and when it exceeds 30% by weight, oil resistance is lowered, and workability is poor.
상기 본 발명에서 사용되는 보강성 섬유는 기재 100 중량부에 대해서 10 ~ 30 중량부를 사용하는 것이 바람직한데, 10 중량부 미만에서는 보강 효과가 떨어지며, 30 중량부를 초과할 경우에는 내열성이나 가공성이 저하되는 문제가 있다.The reinforcing fiber used in the present invention is preferably used in an amount of 10 to 30 parts by weight based on 100 parts by weight of the base material, but when it is less than 10 parts by weight, the reinforcing effect is reduced, and when it exceeds 30 parts by weight, heat resistance or workability is reduced. there is a problem.
한편, 상기 보강 섬유는 아라미드 섬유 또는 유리섬유 중에서 단독 또는 병용하여 사용하는 것이 바람직하지만, 반드시 여기에 한정되는 것은 아니고 이미 공지된 다양한 보강 섬유의 적용이 가능하다.On the other hand, the reinforcing fibers are preferably used alone or in combination among aramid fibers or glass fibers, but are not necessarily limited thereto, and various known reinforcing fibers can be applied.
상기 본 발명에서 사용되는 무기충전제는 기재 100 중량부에 대해서 200 ~ 400 중량부를 사용하는 것이 바람직한데, 그 사용량이 200 중량부 미만에서는 가스켓의 내열성이 떨어지는 문제가 있으며, 400 중량부를 초과할 경우에는 컴파운드의 작업성이 저하되는 문제가 있다.It is preferable to use 200 to 400 parts by weight of the inorganic filler used in the present invention with respect to 100 parts by weight of the base material. There is a problem that the workability of the compound is reduced.
한편, 상기 무기충전제는, 고령토, 황상바륨, 마이카 중에서 단독 또는 2종 이상 병용하여 사용하는 것이 바람직하지만, 반드시 여기에 한정되는 것은 아니고 이미 공지된 다양한 무기충전제의 적용이 가능하다.On the other hand, the inorganic filler is preferably used alone or in combination of two or more of kaolin, barium sulfate, and mica, but is not necessarily limited thereto, and various known inorganic fillers can be applied.
상기 본 발명에서 사용되는 무기바인더는 흐름성 및 유연성 개선을 위해 첨가되는 것으로 기재 100 중량부에 대하여 20 ~ 50 중량부를 사용하며, 그 사용량이 20 중량부 미만에서는 흐름성 및 유연성 개선 효율이 미비해질 우려가 있으며, 50 중량부를 초과할 경우 오히려 물성이 저하될 우려가 있다.The inorganic binder used in the present invention is added to improve flowability and flexibility and uses 20 to 50 parts by weight based on 100 parts by weight of the base material, and if the amount used is less than 20 parts by weight, the efficiency of improving flowability and flexibility will be insufficient. There is a concern, and when it exceeds 50 parts by weight, there is a possibility that the physical properties are rather deteriorated.
한편, 상기 무기바인더는, 콜로이드 실라카, 실리카졸 또는 규산염 중에서 단독 또는 2종 이상 병용하여 사용하는 것이 바람직하지만, 반드시 여기에 한정되는 것은 아니고 이미 공지된 다양한 무기바인더의 적용이 가능하다.Meanwhile, the inorganic binder is preferably used alone or in combination of two or more of colloidal silica, silica sol or silicate, but is not necessarily limited thereto, and various known inorganic binders can be applied.
한편, 본 발명에서 사용되는 가스켓 조성물용 첨가제 및 과산화물 가교제는 이 기술 분야에서 이미 널리 사용되는 첨가제 및 가교제로써 특정 종류 및 함량에 한정하지는 않고, 가스켓 조성물을 구성할 수 있는 이미 공지된 다양한 첨가제 및 가교제를 적용할 수 있다.On the other hand, additives and crosslinking agents for gasket compositions used in the present invention are already widely used additives and crosslinking agents in this technical field, and are not limited to a specific type and content, and various known additives and crosslinking agents that can constitute the gasket composition can be applied.
일 예로써, 기재 100 중량부에 대해서 금속산화물 5 ~ 10 중량부, 스테아린산 1 ~ 3 중량부, 진크디아크릴레이트 5 ~ 10 중량부 및 산화티타늄 5 ~ 20 중량부를 사용할 수 있으며, 이는 통상적으로 고무용 조성물에서 사용되는 종류 및 범위라 할 수 있다.As an example, 5 to 10 parts by weight of metal oxide, 1 to 3 parts by weight of stearic acid, 5 to 10 parts by weight of zinc diacrylate, and 5 to 20 parts by weight of titanium oxide may be used with respect to 100 parts by weight of the substrate, which is usually high It can be said to be the type and range used in the dance composition.
한편, 본 발명에서는 상술한 바와 같이, 컴파운드의 가교를 위해 과산화물 가교제를 사용할 수 있으며, 기재 100 중량부에 대해서 5 ~ 10 중량부를 사용하는 것이 바람직한데, 5 중량부 미만에서는 가교효율이 떨어져 내열성 개선효과가 떨어지며, 10 중량부를 초과할 경우에는 가스켓의 유연성이 떨어지며, 가공시 스코치 발생에 따른 기계적 강도의 저하되는 문제가 있다. 한편, 본 발명에서 사용되는 가교제는 유기과산화물계 화합물이 바람직하며, 유기과산화물계 가교제로는 2,5-비스(터트부틸퍼옥시)-2,5-디메틸-3-헥엔, 디터트부틸퍼옥사이드, 2,5-비스(터트부틸퍼옥시)-2,5-디메틸-헥엔, 디벤조일퍼옥사이드, 비스(터트부틸퍼옥시이소프로필)벤젠, 부틸 4,4-비스(터트부틸퍼옥시)발러레이트, 1,1-비스(터트부틸퍼옥시)3,3,5-트리메틸클로로헥산, 터트부틸퍼옥시벤조에이트, 라우릴퍼옥사이드, 디큐밀퍼옥사이드 등을 사용할 수 있다.On the other hand, in the present invention, as described above, a peroxide crosslinking agent may be used for crosslinking the compound, and it is preferable to use 5 to 10 parts by weight based on 100 parts by weight of the substrate. The effect is reduced, and when it exceeds 10 parts by weight, the flexibility of the gasket is deteriorated, and there is a problem in that mechanical strength is lowered due to scorch during processing. Meanwhile, the crosslinking agent used in the present invention is preferably an organic peroxide compound, and the organic peroxide crosslinking agent is 2,5-bis(tertbutylperoxy)-2,5-dimethyl-3-hexene, ditertbutylperoxide. , 2,5-bis(tertbutylperoxy)-2,5-dimethyl-hexene, dibenzoyl peroxide, bis(tertbutylperoxyisopropyl)benzene, butyl 4,4-bis(tertbutylperoxy)valer Late, 1,1-bis(tertbutylperoxy)3,3,5-trimethylchlorohexane, tertbutylperoxybenzoate, lauryl peroxide, dicumyl peroxide, and the like can be used.
다음으로, 상기 조성물을 이용하여 제조되는 가스켓 구조을 설명하면 다음과 같다.Next, a gasket structure manufactured using the composition will be described as follows.
본 발명은 도 1에 도시된 바와 같이, 한쌍의 탄성층 시트(10) 사이에 지지재(20)가 삽입되어 이루어진다.In the present invention, as shown in FIG. 1 , the
여기서, 상기 탄성층 시트(10)는 상술한 조성물을 이용하여 제조되며, 지지재(20)는 금속 소재의 메쉬망(mesh net)을 적용한다.Here, the
보다 구체적으로 본 발명은 아크릴로니트릴부타디엔고무 70 ~ 90 중량% 및 부타디엔고무 10 ~ 30 중량%로 이루어진 기재 100 중량부에 대하여, 보강성 섬유 10 ~ 30 중량부, 무기충전제 200 ~ 400 중량부, 무기바인더 20 ~ 50 중량부, 가스켓 조성물용 첨가제 및 과산화물 가교제를 니이더(kneader) 믹서에 90 ~ 110℃에서 15 ~ 30분간 혼련하고 이를 오픈롤(open roll)에서 시트 상으로 두 개의 탄성층 시트(10)를 제조한 후, 상기 두 개의 탄성층 시트(10) 사이에 지지재(20)인 금속 소재(예를 들면, 철, 스테인레스, 구리 등)의 메쉬망(mesh net)을 삽입하고, 이 상태에서 열 프레스를 이용하여 150 ~ 170℃, 100 ~ 150 bar에서 10 ~ 15분간 성형하여 제조한다.More specifically, the present invention relates to 100 parts by weight of a substrate consisting of 70 to 90% by weight of acrylonitrile butadiene rubber and 10 to 30% by weight of butadiene rubber, 10 to 30 parts by weight of reinforcing fibers, 200 to 400 parts by weight of inorganic filler, 20 to 50 parts by weight of an inorganic binder, an additive for a gasket composition, and a peroxide crosslinking agent are kneaded in a kneader mixer at 90 to 110° C. for 15 to 30 minutes, and the resultant is kneaded into a sheet in an open roll into two elastic layer sheets. After preparing (10), a mesh net of a metal material (eg, iron, stainless steel, copper, etc.) as a
한편, 열프레스를 이용한 성형 조건이 상기 범위를 벗어날 경우 가스켓 시트의 유연성이 떨어지며, 압축/복원율이 저하되는 문제가 있다.On the other hand, when the molding conditions using the heat press are out of the above range, there is a problem in that the flexibility of the gasket sheet is lowered, and the compression/recovery rate is lowered.
이하, 본 발명을 실시예에 의거하여 더욱 구체적으로 설명하겠는 바, 본 발명이 다음 실시예에 의해 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited by the following examples.
1. 가스켓의 제조1. Manufacture of gasket
(실시예 1)(Example 1)
아크릴로니트릴부타디엔고무 70 중량% 및 부타디엔고무 30 중량%로 이루어진 기재 100 중량부에 대하여, 보강성 섬유(아라미드 섬유) 10 중량부, 무기충전제(고령토) 200 중량부, 무기바인더(콜로이드 실라카) 20 중량부, 금속산화물(산화아연) 5 중량부, 스테아린산 1 중량부, 진크디아크릴레이트 5 중량부 및 산화티타늄 5 중량부 및 과산화물 가교제(디큐밀퍼옥사이드) 5 중량부로 구성된 조성물을 니이더(kneader) 믹서에 90℃에서 30분간 혼련하고 이를 오픈롤(open roll)에서 시트 상으로 두 개의 탄성층 시트(10)를 제조한 후, 상기 두 개의 탄성층 시트(10) 사이에 지지재(20)인 메쉬망(mesh net)을 삽입하고, 이 상태에서 열 프레스를 이용하여 150℃, 150 bar에서 10분간 성형하여 제조하였다.Based on 100 parts by weight of the base material composed of 70% by weight of acrylonitrile-butadiene rubber and 30% by weight of butadiene rubber, 10 parts by weight of reinforcing fiber (aramid fiber), 200 parts by weight of inorganic filler (kaolin), inorganic binder (colloidal silica) A composition consisting of 20 parts by weight, 5 parts by weight of metal oxide (zinc oxide), 1 part by weight of stearic acid, 5 parts by weight of zinc diacrylate, 5 parts by weight of titanium oxide, and 5 parts by weight of a peroxide crosslinking agent (dicumyl peroxide) was kneaded. ) After kneading in a mixer at 90° C. for 30 minutes, and preparing two
(실시예 2)(Example 2)
아크릴로니트릴부타디엔고무 90 중량% 및 부타디엔고무 10중량%로 이루어진 기재 100 중량부에 대하여, 보강성 섬유(유리섬유) 30 중량부, 무기충전제(황상바륨) 400 중량부, 무기바인더(실리카졸) 50 중량부, 금속산화물(산화아연) 10 중량부, 스테아린산 3 중량부, 진크디아크릴레이트 10 중량부 및 산화티타늄 20 중량부 및 과산화물 가교제(디벤조일퍼옥사이드) 10 중량부로 구성된 조성물을 니이더(kneader) 믹서에 110℃에서 15분간 혼련하고 이를 오픈롤(open roll)에서 시트 상으로 두 개의 탄성층 시트(10)를 제조한 후, 상기 두 개의 탄성층 시트(10) 사이에 지지재(20)인 메쉬망(mesh net)을 삽입하고, 이 상태에서 열 프레스를 이용하여 170℃, 100 bar에서 15분간 성형하여 제조하였다.Based on 100 parts by weight of the base material consisting of 90% by weight of acrylonitrile butadiene rubber and 10% by weight of butadiene rubber, 30 parts by weight of reinforcing fiber (glass fiber), 400 parts by weight of inorganic filler (barium sulfate), inorganic binder (silica sol) 50 parts by weight, 10 parts by weight of metal oxide (zinc oxide), 3 parts by weight of stearic acid, 10 parts by weight of zinc diacrylate and 20 parts by weight of titanium oxide and 10 parts by weight of a peroxide crosslinking agent (dibenzoyl peroxide) with a kneader ( kneader) in a mixer at 110° C. for 15 minutes, and after preparing two
(비교예 1)(Comparative Example 1)
실시예 1과 동일하게 제조하되, 메쉬망(mesh net)을 삽입하지 않았다.It was prepared in the same manner as in Example 1, but a mesh net was not inserted.
(비교예 2)(Comparative Example 2)
실시예 2와 동일하게 제조하되, 메쉬망(mesh net)을 삽입하지 않았다.It was prepared in the same manner as in Example 2, but a mesh net was not inserted.
2. 가스켓의 평가2. Assessment of gaskets
상기 실시예 1, 2 및 비교예 1, 2에 따른 가스켓 조성물에 대하여 아래의 시험방법에 준하여 특성을 평가하여 그 결과를 아래 [표 1]에 나타내었다.The properties of the gasket compositions according to Examples 1 and 2 and Comparative Examples 1 and 2 were evaluated according to the following test method, and the results are shown in [Table 1] below.
1) 내열성1) Heat resistance
권장면압(특별한 규정이 없으면 400kgf/cm2 규정)으로 장착된 해당 가스켓을 320℃에서 72시간 동안 온도를 유지하고 냉각 한 후 1,100 kgf·cm의 조임 압력을 가하였을 때, 손상 또는 파손정도를 평가하였다.Assess the degree of damage or breakage when the gasket installed with the recommended surface pressure (400kgf/cm 2 unless otherwise specified) is maintained at 320℃ for 72 hours and cooled and then a tightening pressure of 1,100 kgf·cm is applied. did.
2) 유연성2) Flexibility
권장면압(특별한 규정이 없으면 400kgf/cm2 규정)으로 장착된 해당 가스켓을 320℃에서 72시간 동안 온도를 유지하고 냉각 한 후 봉에 권취하였을 때, 손상 또는 파손정도를 평가하였다.The degree of damage or breakage was evaluated when the gasket installed at the recommended surface pressure (400kgf/cm 2 unless otherwise specified) was maintained at 320℃ for 72 hours and then cooled and wound on a rod.
○ : 양호(일부 손상 또는 파손됨)
× : 나쁨(손상 또는 파손됨)◎: Excellent (not damaged or damaged)
○: Good (partially damaged or damaged)
× : bad (damaged or broken)
상기 [표 1]에서와 같이, 본 발명의 실시예에 따른 가스켓은 비교예에 비하여, 연속사용온도 320℃ 이상의 내열성과 유연성 및 고탄성도를 유지할 수 있음을 알 수 있다.As shown in [Table 1], it can be seen that the gasket according to the embodiment of the present invention can maintain heat resistance, flexibility, and high elasticity at a continuous use temperature of 320° C. or higher, compared to the comparative example.
상술한 바와 같이, 본 발명에 따른 내열성이 우수한 비석면 가스켓 조성물 및 이를 이용하여 제조되는 가스켓 구조를 상기의 바람직한 실시 예를 통해 설명하고, 그 우수성을 확인하였지만 해당 기술 분야의 당업자라면 하기의 특허청구범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.As described above, the non-asbestos gasket composition having excellent heat resistance according to the present invention and the gasket structure manufactured using the same have been described through the above preferred embodiments, and the superiority thereof has been confirmed. It will be understood that various modifications and variations of the present invention can be made without departing from the spirit and scope of the present invention as described in its scope.
10 : 탄성층 시트
20 : 지지재10: elastic layer sheet
20: support material
Claims (4)
아크릴로니트릴부타디엔고무 70 ~ 90 중량% 및 부타디엔고무 10 ~ 30 중량%로 이루어진 기재 100 중량부에 대하여, 보강성 섬유 10 ~ 30 중량부, 무기충전제 200 ~ 400 중량부, 무기바인더 20 ~ 50 중량부, 가스켓 조성물용 첨가제 및 과산화물 가교제로 이루어지는 것을 특징으로 하는, 내열성이 우수한 비석면 가스켓 조성물.
A non-asbestos gasket composition comprising:
Based on 100 parts by weight of the base material consisting of 70 to 90% by weight of acrylonitrile butadiene rubber and 10 to 30% by weight of butadiene rubber, 10 to 30 parts by weight of reinforcing fiber, 200 to 400 parts by weight of inorganic filler, 20 to 50 parts by weight of inorganic binder A non-asbestos gasket composition having excellent heat resistance, characterized in that it consists of a part, an additive for a gasket composition, and a peroxide crosslinking agent.
상기 보강 섬유는, 아라미드 섬유 또는 유리섬유 중에서 단독 또는 병용하여 사용하고,
상기 무기충전제는, 고령토, 황상바륨, 마이카 중에서 단독 또는 2종 이상 병용하여 사용하며,
상기 무기바인더는, 콜로이드 실라카, 실리카졸 또는 규산염 중에서 단독 또는 2종 이상 병용하여 사용하고,
상기 가스켓용 첨가제는, 상기 기재 100 중량부를 기준으로, 금속산화물 5 ~ 10 중량부, 스테아린산 1 ~ 3 중량부, 진크디아크릴레이트 5 ~ 10 중량부 및 산화티타늄 5 ~ 20 중량부로 이루어지며,
상기 과산화물 가교제는, 2,5-비스(터트부틸퍼옥시)-2,5-디메틸-3-헥엔, 디터트부틸퍼옥사이드, 2,5-비스(터트부틸퍼옥시)-2,5-디메틸-헥엔, 디벤조일퍼옥사이드, 비스(터트부틸퍼옥시이소프로필)벤젠, 부틸 4,4-비스(터트부틸퍼옥시)발러레이트, 1,1-비스(터트부틸퍼옥시)3,3,5-트리메틸클로로헥산, 터트부틸퍼옥시벤조에이트, 라우릴퍼옥사이드 또는 디큐밀퍼옥사이드 중에서 단독 또는 병용하여 사용하는 것을 특징으로 하는, 내열성이 우수한 비석면 가스켓 조성물.
The method of claim 1,
The reinforcing fibers are used alone or in combination among aramid fibers or glass fibers,
The inorganic filler is used alone or in combination of two or more of kaolin, barium sulfate, and mica,
The inorganic binder is used alone or in combination of two or more of colloidal silica, silica sol or silicate,
The additive for the gasket consists of 5 to 10 parts by weight of metal oxide, 1 to 3 parts by weight of stearic acid, 5 to 10 parts by weight of zinc diacrylate, and 5 to 20 parts by weight of titanium oxide, based on 100 parts by weight of the base material,
The peroxide crosslinking agent is 2,5-bis(tertbutylperoxy)-2,5-dimethyl-3-hexene, ditertbutylperoxide, 2,5-bis(tertbutylperoxy)-2,5-dimethyl -Hene, dibenzoyl peroxide, bis(tertbutylperoxyisopropyl)benzene, butyl 4,4-bis(tertbutylperoxy)valerate, 1,1-bis(tertbutylperoxy)3,3,5 - A non-asbestos gasket composition with excellent heat resistance, characterized in that it is used alone or in combination with trimethylchlorohexane, tertbutyl peroxybenzoate, lauryl peroxide or dicumyl peroxide.
상기 조성물로 이루어지는 한쌍의 탄성층 시트(10) 사이에 지지재(20)가 삽입되어 이루어지는 것을 특징으로 하는, 가스켓 구조.
In the gasket structure manufactured using the composition according to claim 1,
A gasket structure, characterized in that a support material (20) is inserted between a pair of elastic layer sheets (10) made of the composition.
상기 지지재(20)는,
금속 소재의 메쉬망(mesh net)인 것을 특징으로 하는, 가스켓 구조.4. The method of claim 3,
The support material 20,
A gasket structure, characterized in that it is a mesh net of a metal material.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070092649A (en) | 2006-03-09 | 2007-09-13 | 니치아스 가부시키가이샤 | Process for producing sheet-shaped gasket |
| KR20090116837A (en) | 2008-05-08 | 2009-11-12 | 안남숙 | Gasket for flange using exhaust pipe of ship |
| KR20130007765A (en) * | 2011-07-11 | 2013-01-21 | 제일 이엔에스 주식회사 | A composite for non-asbestos sheet and gasket |
| KR20170130700A (en) * | 2016-05-19 | 2017-11-29 | 제일 이엔에스 주식회사 | Organic-inorganic hybrid composite for non-asbestos gasket with high heat resistance and manufacturing method of composite for gasket using the same |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070092649A (en) | 2006-03-09 | 2007-09-13 | 니치아스 가부시키가이샤 | Process for producing sheet-shaped gasket |
| KR20090116837A (en) | 2008-05-08 | 2009-11-12 | 안남숙 | Gasket for flange using exhaust pipe of ship |
| KR20130007765A (en) * | 2011-07-11 | 2013-01-21 | 제일 이엔에스 주식회사 | A composite for non-asbestos sheet and gasket |
| KR20170130700A (en) * | 2016-05-19 | 2017-11-29 | 제일 이엔에스 주식회사 | Organic-inorganic hybrid composite for non-asbestos gasket with high heat resistance and manufacturing method of composite for gasket using the same |
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