• 한국의류학회지
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• 제11권3호
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• pp.79-88
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• 1987

In order to investigate the hand values and mechanical properties such as tensile, shearing, bending, compression, surface and thickness & weight of the women's summer fabrics were measured by KES-F system. Sorts of 78 commercial fabrics of women's summer cloth were classfied into 43 silk and 35 polyester fabrics according to materials. The experimental results were analysed statistically to relate the hand values and the mechanical properties and concerning to formation of weared clothes and transformation behavior were investigated. The main results are summarized as follows; 1. Polyester fabrics show higher tensile deformation than those of silk fabric. And also polyster fabric has a easy to shape-less and makes a silhouette which goes along with the body. 2. Silk fabrics is superior to polyester fabrics in formation and shear elasticity building box-shaped silhouette. 3. Polyester fabrics show sufficient ability to recover from tending deformation and drapability On the other hand, the compressibility and bending rigidity of silk fabrics were superior to polyester fabrics. 4. Regardless of materials, the bending properties is closely assocsiated with stiffness, anti-drape stiffness and flexibility with soft feeling. Fullness & softness and crispness is primarily influenced by surface properties. There is substantive relationship between scrooping and sheaing properties.

• 폴리머
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• 제24권4호
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• pp.459-468
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• 2000

유리 또는 아라미드 섬유를 보강재로 사용한 섬유강화 복합재료의 기계적 물성을 증진시키기 위하여 복합재료 적층판을 서로 다른 매트릭스 수지와 섬유를 선정하여 이들의 인장, 굴곡 특성을 조사하였다. 불포화 폴리에스테르와 개질된 표면의 아라미드 섬유 복합재료의 경우, 굴곡 물성의 최대값은 실란 농도가 0.5 wt%일 때 관찰되었다. 불포화 폴리에스테르 수지와 유리섬유 복합재료의 인장 물성은 vinylester계가 가장 높게 나타났으며, 굴곡물성은 isophthalic계가 가장 높은 물성을 나타내었다. 유리섬유와 불포화 폴리에스테르 수지 복합재료의 기계적 물성을 증진시키기 위해 겹침 적층판과 기계적 물성과의 상관 관계에 대해서도 연구가 병행되었다.

• 한국염색가공학회지
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• 제19권1호
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• pp.1-11
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• 2007

Dyeing of polyester/cotton blends is usually carried out through the two-bath or one-bath two-step dyeing method using proper disperse dyes and reactive dyes for each fiber. However, the dyeing requires relatively long and complicated procedure as well as there are some problems such as lower dyeability. In the present study, new one-bath one-step dyeing process was investigated using disperse dyes having amino groups and hetero-bifunctional bridge compound(DBDCBS) including dichloro-s-triazinyl groups and ${\alpha},{\beta}$-dibromopropionylamido groups to improve the dyeability of cotton component in polyester/cotton blends. And the one-bath dyeing properties of polyester/cotton blends was evaluated by various dyeing conditions such as pH, temperature and dye concentration, The optimum dyeing condition was pH 4 and $110-120^{\circ}C$. Color fastness were relatively good because of the colvalent bond formation between DBDCBS-reacted cotton fiber and disperse dye.

• 공업화학
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• 제16권1호
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• pp.93-100
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• 2005

두 종류의 4관능 폴리에스터 폴리올에 대해 trimellitic anhydride와 glycidyl metacrylate를 반응하여 두 종류의 8관능 광경화형 폴리에스터 폴리올 변성 하이퍼브랜치 메타아크릴레이트를 합성하고 광경화된 필름의 물성을 조사하였다. Thermogravimetric analyzer (TGA)로 측정한 UV 경화필름의 열안정성은 HBMA-2 (hyperbranched methacrylate-2)가 HBMA-1 (hyperbranched methacrylate-1)보다 우수하였다. 또한 HBMA-2가 HBMA-1보다 경도, 내마모성, 인장강도가 우수하였으며, 내후성 테스트에서도 HBMA-2의 yellow index 값이 높은 결과를 보여주었다.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2011년도 제37회 추계학술대회논문집
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• pp.536-538
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• 2011

본 연구에서는 노출온도와 노출시간에 따른 CNT 강화 불포화 폴리에스터 복합재의 수분흡수 거동을 조사하고 흡수된 수분이 인장특성에 미치는 영향을 평가하였다. 이때 노출온도는 $25^{\circ}C$와 $75^{\circ}C$의 두 경우를 고려하였으며, 노출시간은 600시간까지를 고려하였다. 연구결과에 따르면 수분흡수율은 CNT의 함량과 노출온도가 높을수록 크게 나타났으며, 또한 인장강도는 CNT가 함유된 경우 CNT의 보강효과로 인해 노출시간에 따른 인장강도의 감소가 낮게 나타났다.

• 유체기계공업학회:학술대회논문집
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• 유체기계공업학회 2000년도 유체기계 연구개발 발표회 논문집
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• pp.359-365
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• 2000

Port facilities and marine structures used in marine environment were encountered to corrosion damages because of the influence of $Cl^-$. Generally, to protect these accidents, mainly applied anti-corrosion paint and epoxy coating. But it was still remained erosion-corrosion damage such as impingement erosion, cavitation erosion, deposit attack. There was needs to develope the new coating materials to protective those corrosion damages. This paper, polyester glass flake, vinylester glass flake lining and epoxy coating for SS were investigated electrochemical tests and cavitation erosion test for corrosion behaviour under sea water. The main results obtained are as follows, 1) Surface of epoxy coating appear erosion pin hole but surface of polyester glass flake and vinylester glass flake lining do not appear erosion pin hole after impingement-cavitation erosion test in sea water. 2) Weight loss of polyester glass flake and vinylester glass flake lining do not occur after impingement-cavitation erosion test in sea water. 3) Corrosion current density of polyester glass flake lining less drained than epoxy coating and substrate under corrosion potential.. 4) Corrosion current density of vinylester glass flake lining with three coating less drained than that of polyester glass flake lining with two coating.

• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 2002년도 추계학술발표대회 논문집
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• pp.269-272
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• 2002

UV curing technology becomes important in various sectors of applications due to the high efficiency, environmental protection, and saving of energy. The effect of different proportion of vinylester (VE) and unsaturated polyester (UP) for VE/UP blend system was investigated in context of mechanical properties. The compositions of VE/UP blend were varied within 0:100, 20:80, 40:60, 60:40, 80:20, and 100:0 by weight percent. 1 wt% 1-hydroxy-cyclohexyl-phenyl-ketone was used as photoinitiator. The used intensity of UV light was in the range of $40~70 mW/\textrm{cm}^2$. The flexural strength of vinylester was not sensitive to the intensity of UV light. But the unsaturated polyester was very sensitive to the intensity of UV light. The flexural strength of vinylester was always superior to that of unsaturated polyester. The addition of the vinylester increased the flexural strength of blend system.

• Composites Research
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• 제28권3호
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• pp.118-123
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• 2015

In the current study explain about the bio-based composites made by groundnut shell as reinforcement with polyester resin matrix. Groundnut shell is an abundantly available natural waste byproduct and poly ester resin is widely used to fabricate of composites for good balance of mechanical properties because it is relatively low price and ease of handling. Evaluate the mechanical properties of manufactured groundnut shell/polyester composites by varying the amounts (wt %) of groundnut shell. Particulate shell reinforced polyester composites incorporating varying amounts of groundnut shell (5, 10, 15 and 20%) were characterized for their tensile strength, flexural strength, and impact strength. The mechanical properties improved with increasing particle loading up to 15% and decreased thereafter. Increasing in strength with increased particle shell loading was attributed to increase in surface area which enhanced load transfer between the polyester matrix and ground shall particulates. Scanning electron microscopic studies have been carried out to study the morphology of the composite. Thermal studies and water absorption properties of the composites also studied in this paper.

• 한국의류산업학회지
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• 제10권4호
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• pp.537-543
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• 2008

The purpose of this study was to evaluate the comfort and fabric hand characteristics of selected lining fabrics made of acetate and polyester. The comfort of the linings was determined by human subjects wearing suit blazers constructed with different lining materials in an environmental chamber controlled at $30.6^{\circ}C$ air temperature and 50% relative humidity. The hand characteristics of the lining fabrics were determined by five trained panelists using standard fabric reference samples. The effect of lining fabrics on the subjects' thermal sensations was not statistically significant. But the subjects voted warmer when wearing the polyester surah lined blazer or the polyester taffeta blazer than wearing the acetate blazers. The results of the subjective comfort evaluation indicated that, in general, the subjects rated the acetate linings significantly less sticky, clammy, damp, and non-absorbent than the polyester linings. Acetate surah was rated a little higher than the other acetate fabrics on these comfort descriptors. The results of the subjective hand evaluation indicated that the lining fabrics rated low on the geometric and mechanical hand characteristics and rated moderate on noise. Acetate surah scored the highest on most of the hand characteristics, whereas, polyester taffeta scored the lowest.

• 한국잠사곤충학회지
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• 제44권1호
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• pp.37-41
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• 2002

실용성은 우수하나 위생성과 고급성이 매우 떨어지는 PET직물을 세리신을 이용하여 표면 개질함으로서 새로운 기능성을 부여하고자 하였다. Glutaraldehyde를 사용하여 세리신을 PET 직물에 가교시킬 경우 약 0.22%의 부착율을 보였으며, GA 수용액의 pH는 산으로 갈수록 좋고 세리신 수용액의 pH는 등전점에서 멀어질수록 반응이 쉽고 균일하게 일어났다. PDC 방법으로 세리신을 PET 직물의 부착시킬 경우 0.6%의 부착율을 보였는데 이는 가교제에 의한 경우보다 많이 부착이 되지만 직물에 균일하게 부착되지 않았다. 가교제 또는 PDC 방법을 통하여 PET 직물의 표면을 세리신으로 처리해도 수분율에 큰 영향을 주지 않았다. 즉 감량가공처리만으로도 흡수율이 크게 증가하였으며 이후 세리신을 처리하더라도 흡수율은 향상되지 않았으나 마찰대전성은 크게 향상되었다.