• Applied Chemistry for Engineering
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• v.28 no.4
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• pp.437-441
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• 2017

This study was carried out to investigate the volumetric expansion ratio and hardness of expanded graphite after coating with various resins which were used as an additive of fireproof sealant. The coating thickness of the resin, which represents the coating rate, was dependent of the drying speed of the resin and the viscosity of the resin. Therefore the coating thickness was shown as follows: polyvinyl acetate > acrylic resin > urethane resin > water soluble latex. Furthermore, the volumetric expansion ratio was as follows: urethane resin > water soluble latex > acrylic resin > polyinyl acetate and the hardness was as follows: polyvinyl acetate resin > acrylic resin > water soluble latex > urethane resin. This showed that the volume of expansion was reduced by expansion, which was not covered by coating, but significantly increased by increasing hardness and allowed it to be used as a refractory addition. According to the response surface methodology, the optimized addition amount and stirring speed of acrylic resin were 37.6 wt% and 441.4 rpm, respectively.

• The monthly packaging world
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• s.23
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• pp.69-72
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• 1995

• Proceedings of the Korean Printing Society Conference
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• 2001.06a
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• pp.91-91
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• 2001

환경문제에 대해 오래 전부터 관심을 가져온 선진국은 잉크의 수성화에 주력하여 왔으며, 그 결과 이미 수용성 소재의 양산체재에 들어가 수성 원료 사업을 대형화하는 추세에 있다. 이에 한화석유화학 중앙연구소에선 스티렌/아크릴계 수용성 High Solid 수지를 개발하여, 수성 잉크용 분산제, Resin Fortified Emulsion (RFE), UV Resist 잉크, 수성코팅제, 바닥광택제 등에 적요하기 위한 응용기술을 개발하였다. 본 연구는 수성 잉크의 주요 구성 성분인 grinding vehicle. let-down vehicle로 사용되는 수용성 High Solid 수지 (SAA 수지) 및 이를 이용한 에멀젼 수지의 합성과 수성 잉크로의 응용에 대한 것이다. SAA(HCC Soluryl Resin) 수지는 구조적으로 Styrene, Alpha-methyl Styrene, crylic Acid의 삼원공중합체이며 약 70%의 소수성 물질과 30%의 친수성 물질이 Random 하게 중합되어 있으며 약 5000∼15000정도의 낮은 분자량을 가진 물질로, 고고형분에서도 낮은 점도를 유지하기 위하여 분자량과 좁은 분자량과 좁은 분자량을 가지는 수지를 연속벌크중합방법으로 합성하였다. 또한 이를 고분자 유화제로서 사용하여 수지보강 에멀젼수지 (RFE 수지, HCC Soluryl Emulsion) 를 제조하는데 사용하였으며, SAA수지 및 RFE수지를 수성잉크용 분산제, 잉크 바인더용으로 적용하였다.

• Applied Chemistry for Engineering
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• v.24 no.2
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• pp.171-176
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• 2013

The need of volatile organic compound (VOC) free coating material has been increased to solve environmental problems such as the global warming. Nowadays, about 70~80% of coating materials used in the worldwide are a liquid type. Therefore, the development of non-solvent coating material that can minimize VOCs emissions is necessary to solve the global warming problem. In this study, acrylic monomers were added to develop non-solvent paints in order to improve disadvantages of the poor adhesion of a conventional phenolic resin caused by acidification. As a result, the blend resins of 2.818 Mpa phenol- formaldehyde resin/poly methyl methacrylate (PE/PMMA) has the best properties and performances for the adhesives.

• Conservation Science in Museum
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• v.21
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• pp.1-16
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• 2019

This study investigated the material properties of UV-curable Resin in order to identify stable materials for use in the restoration of glass cultural properties. Tested samples were based on acrylic UV-curable Resin (SECURE CP-7321®), to which urethane UV-curable Resin (FLGPCL04 Clear®) was added in 10% increments to produce eleven samples. The results showed that all eleven samples had similar properties in terms of refractive index, density, adhesive strength, and anti-yellowing. But the surface hardness and compressive strength were optimal and effective for maintaining the shape of artifacts after restoration treatment when the proportion of urethane resin was in the range of 10-20%. Based on these findings, the mixing sample [acrylic UV-curable Resin(9) : urethane UV-curable Resin(1)] was applied in the conservation treatment of a glass cultural propertie (Hwangbuk 519) excavated from the North Mound of Hwangnamdaechong, Tomb in Gyeongju.

• The Journal of Information Technology
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• v.5 no.4
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• pp.139-144
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• 2002

In this study, acrylic water-soluble coatings were prepared by the white pigment($TiO_2$) and acrylic resin. The basic properties of acrylic water-soluble coatings were measured, and the maintenance of perfume(lemon) was investigated by FT-IR spectrophotometer and sensory test.

• The Journal of Information Technology
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• v.5 no.2
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• pp.11-16
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• 2002

In this study, acrylic water-soluble coatings were prepared by the white pigment($TiO_2$) and acrylic resin. The basic properties of acrylic water-soluble coatings were measured, and the maintenance of perfume was investigated by FT-IR spectrophotometer and sensory test.

• The Journal of Information Technology
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• v.7 no.1
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• pp.105-110
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• 2004

In this study, acrylic water-soluble coatings were prepared by the white pigment($TiO_2$) and acrylic resin. The basic properties of acrylic water-soluble coatings were measured, and the maintenance of perfume was investigated by FT-IR spectrophotometer and sensory test.

• Elastomers and Composites
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• v.35 no.3
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• pp.196-204
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• 2000

SBR, polyurethane, acryl and epoxy latex were separately mixed with ethylene -vinylacetate emulsion(EVA) in the range of $0{\sim}50wt%$. For the mixtures, the various physical properties such as defoamerability, mechanical property, and water resistance were experimentally examined. The excellent defoamer was BYK-021 and the appropriate use of it was 0.3 phr for the total components. The shrinkage of compounds was influenced by the compatability of resins and the formation of voids. The mechanical properties was related to the cohesive force of resin particles, the coagulation of cement particles and the co-bonding of resin particles with cement particles. Mixing latex separately showed better properties then non-mixing in the shrinkage ratio, flexural strength, adhesive strength, and impact strength. The water resistance of composites mixed with cement was worse than that of EVA resin.

• Journal of Conservation Science
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• v.28 no.1
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• pp.53-62
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• 2012

The archival objects are tangible evidence related to the public service. They are unique and offer information representing the specific events, time or person. The archival objects as modern cultural heritage do not have the guideline to classify, manage and conserve them. Especially, it is difficult to apply general conservation process for burial artifacts, because there are few study example of conservation for metal archival objects and they have complex administrative value. We tried to find suitable material and application method for consolidation of copper alloy archival object. We choose three kinds of wax and acrylic resin for burial artifacts and had done comparative analysis of their characterizations following kinds and coating methods. As a result of evaluation by several surface analysis such as optical microscope, measuring film thickness, adhesive strength, contact angle and yellowing test, acrylic resin can use to archival objects of copper alloy, effectively but the method of heating after dip-coating with Wax B used before can get best effect of consolidation.