• Journal of the Semiconductor & Display Technology
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• v.18 no.3
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• pp.52-59
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• 2019

Styrene-butadiene rubber (SBR) composites, incorporated with graphene, molybdenum disulfide and their hybrid in different filling ratio, were fabricated by a two roll-mill. The dispersion states of all the samples' matrix were employed by carbon black dispersion tester. The curing properties of the pre-vulcanized rubber composites were investigated, after molding by heating press machine, the tensile strength, storage modulus, friction coefficient, the swelling property had also been tested according to ASTM. The composite G1M10 (filling with 1 phr graphene and 10 phr molybdenum) showed the best mechanical properties and viscoelastic properties in this research with a better filler dispersion state and more compact matrix structure.

• Carbon letters
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• v.27
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• pp.72-80
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• 2018

In the present work, a comparative study of the mechanical behavior of two series of elastomeric composites, based on carboxylated styrene butadiene rubber (X-SBR) and reinforced with rice bran carbon (RBC) and graphite, is reported. Hybrid composites of X-SBR filled with RBC-graphite were also investigated in terms of the cure characteristics, hardness, tensile properties, abrasion resistance, and swelling. It was observed that the cure times decreased with the incorporation of a carbon filler whereas the torque difference, tensile strength, tensile modulus, hardness, and swelling resistance increased compared to the neat X-SBR revealing a favorable characteristic of crosslinking. Dynamic rheological analysis showed that the G' values of the composites, upon the addition of RBC-graphite, were changed to some extent. This demonstrates that the presence of a strongly developed network of fillers will ensure a reinforcing characteristic in a polymer matrix.

• Elastomers and Composites
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• v.55 no.4
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• pp.300-305
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• 2020

In recent times, polymeric foams have been popularly used in various applications. To meet the demand for these applications, polymer foams with excellent mechanical and thermal properties are required. In particular, silicone foam has gained significant attention owing to its superior thermal properties and low density. In this study, the mechanical and thermal properties of silicone foams filled with wollastonite were investigated. A maximum tensile strength of 98.3 kPa was obtained by adding 15 phr of wollastonite. The specific gravity did not exhibit a marked difference up to 10 phr, but it increased substantially above 15 phr wollastonite. Thermogravimetric analysis indicated that adding wollastonite to the silicone foam increased both the amount of residue and the thermal decomposition temperature. The morphologies of the silicone foams filled with wollastonite were observed by scanning electron microscopy.

• Prospectives of Industrial Chemistry
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• v.23 no.5
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• pp.21-32
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• 2020

유기전자소자는 용액공정을 통한 대량생산이 가능하기 때문에 기존 무기전자소자에 비해 제조비용이 저렴하고 대면적 생산이 가능하며, 유기분자의 본연 특징으로 인해 유연하고 가벼운 소자를 구현할 수 있다. 그러나 무기 반도체에 비하여 현저히 낮은 전하이동도 특성은 유기전자소자의 상용화에 걸림돌이 되고 있다. 따라서 공액고분자의 결정화도, 모폴로지, 분자배향 최적화를 통한 자기조립 박막 제조는 전하이동을 원활히 하기 때문에 유기전자소자의 개발에 필수적이다. 본 기고에서는 유기전자소자의 활성층으로 사용되는 공액고분자의 자기조립을 유도하기 위한 다양한 특성을 갖는 용매 첨가제의 효과에 대해서 알아보고, 특히 첨가제의 용해도 계수가 공액고분자의 자기조립 거동에 미치는 영향에 대해 자세히 논의하고자 한다.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2004.11a
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• pp.31-36
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• 2004

• Macromolecular Research
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• v.17 no.11
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• pp.825-828
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• 2009

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2002.04b
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• pp.186-186
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• 2002

• Bulletin of the Korean Chemical Society
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• v.27 no.3
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• pp.432-434
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• 2006

• Bulletin of the Korean Chemical Society
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• v.31 no.7
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• pp.2085-2087
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• 2010

• Bulletin of the Korean Chemical Society
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• v.31 no.2
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• pp.497-499
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• 2010