KR101754646B1 - A gasket of low specific gravity using a water soluble organic binder - Google Patents
A gasket of low specific gravity using a water soluble organic binder Download PDFInfo
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- KR101754646B1 KR101754646B1 KR1020160158380A KR20160158380A KR101754646B1 KR 101754646 B1 KR101754646 B1 KR 101754646B1 KR 1020160158380 A KR1020160158380 A KR 1020160158380A KR 20160158380 A KR20160158380 A KR 20160158380A KR 101754646 B1 KR101754646 B1 KR 101754646B1
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K3/1025—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by non-chemical features of one or more of its constituents
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Abstract
유기바인더의 함량을 높이고, 무기충진제의 함량을 낮춰 입자의 분산력을 향상시키고, 입자간의 결합력을 증대시켜 밀집도의 향상을 통해 제지공법으로도 가스켓을 생산할 수 있으며, 유연성이 높고 표면특성이 향상되어 가스켓의 내구성을 향상시키고 가스켓 내에 함유되는 조성물 중의 섬유의 분산이 용이하기 때문에, 적은 양의 섬유로도 높은 물성을 나타낼 수 있어서 제조경쟁력이 증대된 조성비를 갖는 수용성 유기바인더를 적용한 저비중 가스켓이 개시되어있다. 상기 목적을 달성하기 위해서 본 발명의 바람직한 일 실시 예에 따르면, 본 발명인 수용성 유기바인더를 적용한 저비중 가스켓은 물 1000g을 기준으로, 섬유 0.01~2wt%, 무기충진제 0.1~10wt%, 유기바인더 0.1~10wt%, 가교제, 가교촉진제, 정착제, 보류제, 응집제 및 소포제 0.01~0.1wt%로 이루어진다. It is possible to increase the content of the organic binder, to lower the content of the inorganic filler, to improve the dispersing ability of the particles, to increase the bonding force between the particles, to improve the density, to produce the gasket by the papermaking method, A low specific gravity gasket to which a water-soluble organic binder having a composition ratio that can exhibit high physical properties even with a small amount of fibers and which has a high manufacturing competitiveness has been disclosed since the durability of the gasket is improved and the fibers in the composition are easily dispersed have. To achieve the above object, according to a preferred embodiment of the present invention, a low specific gravity gasket applying the water-soluble organic binder according to the present invention comprises 0.01 to 2 wt% of fibers, 0.1 to 10 wt% of inorganic fillers, 10 wt%, a crosslinking agent, a crosslinking accelerator, a fixing agent, a retention agent, a flocculant, and an antifoaming agent in an amount of 0.01 to 0.1 wt%.
Description
본 발명은 수용성 유기바인더를 적용한 저비중 가스켓에 관한 것으로, 더욱 상세하게는 석면을 사용하지 않아서 친환경적이면서도, 종래의 가스켓과 대비하여 유기바인더, 충진제 및 섬유의 분산을 극대화하여 종래의 카렌더링 생산방식보다 분산성을 높임으로서 제지공법으로도 가스켓의 물성이 좋은 제품을 생산할 수 있는 원료의 혼합비율을 갖는 가스켓에 관한 것이다. The present invention relates to a low specific gravity gasket to which a water-soluble organic binder is applied. More specifically, the present invention relates to a gasket for low specific gravity applying the water-soluble organic binder, which is environmentally friendly and maximizes dispersion of organic binders, fillers and fibers, To a gasket having a mixing ratio of raw materials capable of producing a product having a good physical property of a gasket by a papermaking process.
가스켓에 사용되는 재료로서는 종래 석면이 알려져 있으나, 석면은 인체에 대한 악영향이 지적되기에 현재는 그 사용이 재검토되고 있으며, 이 때문에 석면을 대신하는 대체물을 제조하고자 하는 방안으로 등록특허 10-1326558호에서는 석면의 대체로서 섬유기초재를 사용하고 고무를 혼합하여 친환경적이면서도 생산성 및 제조원가를 절감시킨 가스켓의 조성물을 개시하고 있으나, 상술한 등록특허에서 개시하고 있는 고무바인더들을 혼합하여 사용하는 조성물은 고무바인더 고유 특징인 유지의 침투에 대한 저항성인 내유성을 하락시키는 요인으로 작용하고, 가스켓의 성능을 좌우하는 일 요소인 가교 시스템이 복잡해지는 문제로 인하여 가스켓의 성능을 최적화하지 못하는 문제를 야기한다. 또한, 고무를 이용한 종래의 가스켓은 고무를 톨루엔에 팽윤시키고, 팽윤시킨 고무에 유기섬유, 무기섬유, 무기충진제, 유기충진제, 각종 약품을 투입하여 혼합한 후에 이를 카렌더링 제조방법인 적층 성형방법으로 가스켓 시트를 제조하였다. 카렌더링 제조방법은 시트의 생산 크기가 카렌더의 둘레길이에 의존하게 되기 때문에 제지공법을 통한 롤 형태의 제품을 생산하기가 불가능하다. 이러한 카렌더링 제조방법을 통한 적층 성형방법은 종래의 가스켓을 만들기 위한 가스켓 조성물의 성분간의 분산이 용이하지 않고, 입자 사이에 섬유가 견고하게 결합할 수 있는 결합력이 약한 원인에 기인한다. 따라서, 고온에서 사용하더라도 늘임과 조임이 가능하도록 유연성이 좋고 표면특성이 좋으며, 입자간의 밀집도를 높여 입자와 섬유 사이의 견고성을 증대시킬 수 있다면 종래의 적층 성형방법이 아닌 제지공법으로 가스켓을 생산할 수 있으므로, 이러한 공법이 효율적으로 적용가능한 조성물로 형성된 가스켓의 기술이 요청되는 실정이다. Conventional asbestos has been known as a material used for gaskets. However, asbestos has been pointed out to have adverse effects on the human body, its use has been reconsidered. Therefore, as a method for manufacturing a substitute for asbestos, Patent No. 10-1326558 Discloses a composition of a gasket which is environmentally friendly and which reduces productivity and manufacturing cost by using a fiber base material as a substitute for an asbestos. However, the composition using the rubber binders disclosed in the above- Which is an inherent characteristic of the gasket, is a factor that lowers the oil resistance which is resistance to the permeation of the oil, and it causes the problem that the performance of the gasket can not be optimized due to the complication of the crosslinking system which is one factor that determines the performance of the gasket. Further, conventional gaskets using rubber are prepared by swelling rubber in toluene, adding organic fibers, inorganic fibers, inorganic fillers, organic fillers, and various chemicals to the swollen rubber and mixing them, A gasket sheet was produced. Since the production size of the sheet depends on the circumferential length of the calender, it is impossible to produce a roll-shaped product by the paper making process. The lamination molding method through the car-rendering manufacturing method is caused by the fact that the dispersion of the components of the gasket composition for forming the conventional gasket is not easy and the bonding force capable of firmly bonding the fibers between the particles is weak. Therefore, even if it is used at high temperature, it is possible to produce a gasket by a papermaking method instead of a conventional lamination molding method as long as it is flexible and has good surface characteristics so that it can be stretched and tightened, Therefore, there is a demand for a technique of a gasket formed by a composition to which such a method can be efficiently applied.
본 발명의 목적은 상술한 종래의 가스켓 조성물과는 달리, 입자의 분산력을 향상시키고, 입자간의 결합력을 증대시켜 밀집도의 향상을 통해 제지공법으로도 가스켓을 생산할 수 있는 조성비를 갖는 수용성 유기바인더를 적용한 저비중 가스켓을 제공함에 있다.An object of the present invention is to provide a water-soluble organic binder having a composition ratio capable of producing a gasket by a papermaking process by improving the dispersibility of particles and increasing the bonding force between particles by increasing density, unlike the conventional gasket composition described above To provide a low specific gravity gasket.
본 발명의 다른 목적은 상기 기능을 제공할 수 있으면서도 유연성이 높고 표면특성이 향상되어 가스켓의 내구성을 향상시킨 수용성 유기바인더를 적용한 저비중 가스켓을 제공함에 있다.Another object of the present invention is to provide a low specific gravity gasket to which the water-soluble organic binder capable of providing the above function and having improved flexibility and improved surface characteristics and improved durability of the gasket.
본 발명의 또 다른 목적은 가스켓 내에 함유되는 조성물 중의 섬유, 충진제 및 바인더의 분산이 용이하기 때문에, 적은 양의 섬유로도 높은 물성을 나타낼 수 있어서 제조경쟁력이 증대된 조성비를 갖는 수용성 유기바인더를 적용한 저비중 가스켓을 제공함에 있다.It is still another object of the present invention to provide a gasket which can be easily dispersed in a composition contained in a gasket, and thus can exhibit high physical properties even with a small amount of fibers, To provide a low specific gravity gasket.
상기 목적을 달성하기 위해서 본 발명의 바람직한 일 실시 예에 따르면, 본 발명인 수용성 유기바인더를 적용한 저비중 가스켓은 물 1000g을 기준으로, 섬유 0.01~2wt%, 무기충진제 0.1~10wt%, 유기바인더 0.1~10wt%, 가교제, 가교촉진제, 정착제, 보류제, 응집제 및 소포제 0.01~0.1wt%로 이루어진다. To achieve the above object, according to a preferred embodiment of the present invention, a low specific gravity gasket applying the water-soluble organic binder according to the present invention comprises 0.01 to 2 wt% of fibers, 0.1 to 10 wt% of inorganic fillers, 10 wt%, a crosslinking agent, a crosslinking accelerator, a fixing agent, a retention agent, a flocculant, and an antifoaming agent in an amount of 0.01 to 0.1 wt%.
본 발명의 또 다른 실시 예에 따르면, 본 발명인 수용성 유기바인더를 적용한 저비중 가스켓의 상기 무기충진제는 고령토, 탈크, 카본블랙, 그라파이트, 실리카 중에 선택된 어느 하나이다. According to another embodiment of the present invention, the inorganic filler of the low specific gravity gasket to which the water-soluble organic binder of the present invention is applied is any one selected from kaolin, talc, carbon black, graphite and silica.
본 발명의 또 다른 실시 예에 따르면, 본 발명인 수용성 유기바인더를 적용한 저비중 가스켓의 상기 유기바인더는 SBR라텍스, NBR라텍스, NR라텍스 중에 선택된 어느 하나이다. According to another embodiment of the present invention, the organic binder of the low specific gravity gasket to which the water soluble organic binder of the present invention is applied is any one selected from SBR latex, NBR latex and NR latex.
상술한 구성을 통해서, 본 발명인 수용성 유기바인더를 적용한 저비중 가스켓은 환경친화적이면서도, 입자의 분산력을 향상시키고, 입자간의 결합력을 증대시켜 밀집도의 향상을 통해 제지공법으로도 가스켓을 생산함으로써 기존의 카렌더링 생산방식보다 섬유, 충진제 및 바인더의 분산을 극대화하여 생산할 수 있는 효과가 있다. Through the above-described construction, the low specific gravity gasket applying the water-soluble organic binder according to the present invention is environmentally friendly and improves the dispersibility of the particles and increases the bonding force between the particles, thereby improving the density of the gasket. It is possible to maximize dispersion of fibers, fillers and binders rather than rendering production methods.
또한, 저비중이면서도 유연성이 높고 표면특성이 향상되어 가스켓의 내구성을 향상시킬 수 있다. In addition, it is possible to improve the durability of the gasket by having high specific gravity, high flexibility, and improved surface characteristics.
또한, 가스켓 내에 함유되는 조성물 중의 섬유의 분산이 용이하기 때문에, 적은 양의 섬유로도 높은 물성을 나타낼 수 있어서 제조경쟁력이 증대된 조성비를 갖는 수용성 유기바인더를 적용한 저비중 가스켓을 생산할 수 있다.In addition, since the fibers in the composition contained in the gasket can be easily dispersed, it is possible to produce a low specific gravity gasket employing a water-soluble organic binder having a composition ratio that can exhibit high physical properties even with a small amount of fibers.
본 발명의 바람직한 일 실시 예를 설명하면, 본 발명인 수용성 유기바인더를 적용한 저비중 가스켓은 물 1000g을 기준으로, 섬유 0.01~2wt%, 무기충진제 0.1~10wt%, 유기바인더 0.1~10wt%, 가교제, 가교촉진제, 정착제, 보류제, 응집제 및 소포제 0.01~0.1wt%로 이루어진다. 즉, 물 1000g 기준으로 환산했을 때, 상기의 중량비만큼 포함되며, 바람직하게는 섬유 0.44wt%, 무기충진제 1.07wt%, 유기바인더 0.97wt%, 가교제 0.031wt%, 가교촉진제 0.017wt%, 정착제 0.012wt%, 보류제 0.012wt%, 응집제 0.024wt%이며, 소포제는 기포 발생시 미미한 양을 첨가하므로 중량비는 의미가 적으므로 기재는 생략한다. 종래의 가스켓은 조성물의 분산이 용이하지 않아서 제지공법으로 롤형태의 가스켓 생산이 불가능하지만, 본 발명에 의한 가스켓 조성물의 구성은 입자간의 분산이 극대화될 수 있도록, 재료의 취사선택 및 각 재료의 투입비율이 임계적 의의를 갖는다. 이러한 분산이 극대화된 특성으로 인하여 가스켓의 고온에서의 늘림 및 조임이 가능한 유연성이 증대되며 표면특성이 향상되므로 가스켓을 롤형태의 제지공법으로도 생산하기에 더욱 적합한 배합이 된다. 상기 섬유는 아라미드섬유, 셀로로즈섬유, 폴리아크릴니트릴섬유, 나일론 섬유에서 선택되며, 상기 무기충진제는 고령토, 탈크, 카본블랙, 그라파이트, 실리카 중에 선택된 어느 하나이다. 본 발명에 의한 무기충진제의 함량은 저비중으로도 입자와 섬유 사이의 결합력이 증대되어 적은 양의 섬유로도 가스켓의 수득이 가능하다. 표 1은 무기충진제에 따른 물성을 비교한 것으로서, 본 발명에 의한 조성에 의해 실험한 결과, 상기 무기충전제 중에 탈크가 이러한 결합력을 최대한 발휘하는 것으로 아래 실험결과로 확인되었다.A low specific gravity gasket to which the water-soluble organic binder according to the present invention is applied is characterized by containing 0.01 to 2 wt% of fibers, 0.1 to 10 wt% of inorganic fillers, 0.1 to 10 wt% of organic binders, A crosslinking accelerator, a fixing agent, a retaining agent, a flocculating agent and an antifoaming agent in an amount of 0.01 to 0.1 wt%. In other words, when converted to 1,000 g of water, the amount is included by the above weight ratio, preferably 0.44 wt% of fibers, 1.07 wt% of inorganic filler, 0.97 wt% of organic binder, 0.031 wt% of crosslinking agent, 0.017 wt% 0.012 wt.%, A retaining agent 0.012 wt.%, And a flocculant 0.024 wt.%. The antifoaming agent adds a slight amount when bubbles are generated, so the weight ratio is meaningless. The conventional gasket is not easy to disperse the composition, so that it is not possible to produce a roll-shaped gasket by the paper-making method. However, the composition of the gasket composition of the present invention is such that the dispersion among the particles can be maximized, The ratio has a critical significance. This dispersion maximizes the flexibility of the gasket to be stretched and tightened at high temperatures and improves the surface properties, which makes it more suitable for producing gaskets by the roll-type paper-making method. The fiber is selected from aramid fiber, cellulosic fiber, polyacrylonitrile fiber and nylon fiber, and the inorganic filler is any one selected from kaolin, talc, carbon black, graphite and silica. The content of the inorganic filler according to the present invention increases the bonding force between the particles and the fibers even at a low specific gravity, so that a gasket can be obtained even with a small amount of fibers. Table 1 is a comparison of the physical properties according to the inorganic filler. As a result of the experiment with the composition according to the present invention, it was confirmed that the talc in the inorganic filler exerts the bonding force to the maximum, as a result of the following experiment.
본 발명인 수용성 유기바인더를 적용한 저비중 가스켓은 물 1000g을 기준으로, 섬유 0.01~2wt%, 탈크 0.1~10wt%, 유기바인더 0.1~10wt%, 가교제, 가교촉진제, 정착제, 보류제, 응집제 및 소포제 0.01~0.1wt%로 가스켓을 완성하였다. The low specific gravity gasket to which the water-soluble organic binder according to the present invention is applied is characterized by containing 0.01 to 2% by weight of fibers, 0.1 to 10% by weight of talc, 0.1 to 10% by weight of organic binders, a crosslinking accelerator, The gasket was completed at 0.01 to 0.1 wt%.
[비교예 1][Comparative Example 1]
본 발명인 수용성 유기바인더를 적용한 저비중 가스켓은 물 1000g을 기준으로, 섬유 0.01~2wt%, 고령토 0.1~10wt%, 유기바인더 0.1~10wt%, 가교제, 가교촉진제, 정착제, 보류제, 응집제 및 소포제 0.01~0.1wt%로 가스켓을 완성하였다. The low specific gravity gasket to which the water-soluble organic binder according to the present invention is applied is characterized in that it comprises 0.01 to 2 wt% of fibers, 0.1 to 10 wt% of kaolin, 0.1 to 10 wt% of organic binder, 0.1 to 10 wt% of a crosslinking agent, a crosslinking accelerator, The gasket was completed at 0.01 to 0.1 wt%.
[비교예 2][Comparative Example 2]
본 발명인 수용성 유기바인더를 적용한 저비중 가스켓은 물 1000g을 기준으로, 섬유 0.01~2wt%, 운모분 0.1~10wt%, 유기바인더 0.1~10wt%, 가교제, 가교촉진제, 정착제, 보류제, 응집제 및 소포제 0.01~0.1wt%로 가스켓을 완성하였다. The low specific gravity gasket to which the water-soluble organic binder of the present invention is applied is characterized in that it comprises 0.01 to 2% by weight of fibers, 0.1 to 10% by weight of mica, 0.1 to 10% by weight of organic binder, a crosslinking agent, a crosslinking accelerator, The gasket was completed with the defoamer 0.01-0.1 wt%.
본 발명에 의한 가스켓 조성물 중에 무기충진제로 탈크, 고령토, 운모분을 사용하여 실험한 결과, 탈크를 적용한 가스켓 시트의 물성이 가장 좋게 나오는 것을 확인할 수 있다. 또한, 탈크와 고령토의 입자크기를 비교하면 다음과 같다. As a result of an experiment using talc, kaolin and mica as an inorganic filler in the gasket composition according to the present invention, it was confirmed that the properties of the gasket sheet to which talc was applied were the best. In addition, the particle size of talc and kaolin is as follows.
밀도 : 2.6~2.8g/cm2 Particle size: 11um
Density: 2.6 to 2.8 g / cm 2
밀도 : 2.6g/cm2 Particle size: 2um
Density: 2.6 g / cm 2
입자분석결과 본 발명에 의한 조성물 중 무기충진제로 탈크를 적용했을 때와, 고령토를 적용했을 때를 비교해보면, 양 경우의 밀도는 비슷하지만, 고령토에 비하여 탈크의 입자가 더욱 촘촘히 형성되어 있음을 알 수 있으며, 입자의 크기도 고령토보다 더욱 크고, 입자 사이에 섬유가 견고하게 결합할 수 있는 결합력이 훨씬 뛰어남을 알 수 있다. 즉, 이러한 특성으로 인하여 종래의 가스켓 제조를 적층성형방식에서 벗어나 롤형태의 제지형태로 효과적으로 생산가능하게되며, 적은 양의 섬유로도 가스켓을 수득할 수 있어서 제조경쟁력이 뛰어나다. As a result of the particle analysis, when the talc was applied as an inorganic filler in the composition of the present invention and the kaolin was applied, the density of the both cases was similar but the talc particles were formed more tightly than kaolin And the size of the particles is larger than that of kaolin, and it can be seen that the bonding force between the particles to firmly bond the fibers is much better. That is, due to such characteristics, conventional gasket manufacturing can be effectively produced in a roll-shaped paper form out of the lamination molding method, and a gasket can be obtained even with a small amount of fibers.
본 발명에 의한 상기 유기바인더는 SBR라텍스, NBR라텍스, NR라텍스 중에 선택된 어느 하나이다. 본 발명에서의 가교제나 가교촉진제는 라텍스의 고형분의 물성을 향상시키기 위하여 투입하는데, 특정 종류에 한정하지는 않고 가스켓 조성물을 구성할 수 있는 다양한 가교제를 적용할 수 있으나, 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, 디큐밀퍼옥사이드로 이루어진 군에서 선택되는 어느 하나를 사용한다. 본 발명에 의한 상기 정착제는 이온성 EPI/Amine계 Polymer (Epichlorohydrine-Dimethylamine Polymer)를 사용하며, 미세섬유를 정착시켜 지합을 개선할 수 있으며, 보류제는 양이온성 Polymer (Polyacrylamaid)
를 사용하며, 탈수성능을 향상시키기 위하여 투입하나, 상기 정착제와 상기 보류제를 동시에 적용하면 섬유, 충진제 및 라텍스 성분의 지합을 더욱 향상시킬 수 있다. 본 발명에 의한 응집제는 무기 응집제로는 황산알루미늄 (AL2(SO4)3)을 사용하고, 유기 응집제로는 고분자 응집제 (Polyacrylamaid)를 사용하며, 미세하게 부유하고 있는 무기충진제 및 섬유를 결합시켜 시트의 균일성을 확보하도록 하며, 소포제는 제조공정에서 발생하는 기포를 억제하거나 제거하기 위하여 사용한다. The organic binder according to the present invention is any one selected from SBR latex, NBR latex and NR latex. The crosslinking agent or crosslinking accelerator in the present invention is added to improve the physical properties of the solid component of latex. Various crosslinking agents which can constitute the gasket composition can be applied, but the crosslinking agent is not limited to a specific type, 2,5-dimethyl-3-hexene, ditertbutyl peroxide, 2,5-bis (tertbutylperoxy) Bis (tertbutylperoxy) benzene, butyl 4,4-bis (tertbutylperoxy) valerate, 1,1-bis (tertbutylperoxy) 3,3,5-trimethylchlorohexane, , Lauryl peroxide, and dicumyl peroxide. The fixing agent according to the present invention uses an ionic EPI / epinephrine-dimethylamine polymer (EPI / Amine-based polymer) and can improve the adhesion by fixing fine fibers. The retention agent is a cationic polymer (Polyacrideid)
And is added to improve the dewatering performance, but if the fixing agent and the retaining agent are applied at the same time, the composition of the fiber, the filler and the latex component can be further improved. As the coagulant according to the present invention, aluminum sulfate (AL2 (SO4) 3) is used as an inorganic coagulant, a polymer flocculant is used as an organic coagulant, and inorganic filler and fiber, And the defoaming agent is used to suppress or remove the bubbles generated in the manufacturing process.
앞서 설명한 본 발명을 실시하기 위한 구체적인 내용에는 본 발명의 바람직한 실시 예를 참조하여 설명하였지만, 해당 기술분야의 당업자라면 후술 될 특허청구범위에 기재된 발명의 사상 및 기술 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변형시킬 수 있음을 이해할 수 있을 것이다.
While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that various modifications and changes may be made.
Claims (3)
The low specific gravity gasket according to claim 1, wherein the organic binder is selected from the group consisting of SBR latex, NBR latex, and NR latex.
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| KR101676864B1 (en) * | 2015-08-26 | 2016-11-17 | 한국신발피혁연구원 | Composition for non-asbestos gasket with high heat resistance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100378744B1 (en) * | 1994-08-09 | 2003-05-22 | 스터어링 케미컬즈 인터내셔널 인코오포레이팃드 | Asbestos-free gaskets containing blends of organic fibrous and particulate components |
| KR101676864B1 (en) * | 2015-08-26 | 2016-11-17 | 한국신발피혁연구원 | Composition for non-asbestos gasket with high heat resistance |
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