• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2006년도 춘계 학술발표회 논문집(II)
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• pp.373-376
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• 2006

The purpose of this study was manufactured and evaluated the bond performance of recycled polyethylene terephthalate(PET) bottle fiber reinforced concrete. Four deformed recycled PET bottle fibers were manufactured and pullout test was conducted in accordance with the JCI-SF 8. Test parameters included four different type of fiber geometry and two types of mortar specimens. According to bond test results, it was found that embossing type recycled PET bottle fiber was significant improving the pullout load and interface toughness.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2003년도 가을 학술발표회 논문집
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• pp.203-204
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• 2003

Generally, polymeric foam has many advantages, such as light-weight, good impact absorptivity and adiabatic properties. Poly (ethylene terephthalate) PET has good recyclability and no toxicity. Hence, if we make foam of PET, it could be used for various applications such as heat insulating material, recyclable packing material, and food vessel. Thus these properties are attractive interests to manufacturers. (omitted)

• 폴리머
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• 제26권3호
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• pp.389-399
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• 2002

단파장 자외선을 이용하여 폴리에틸렌테레프탈레이트(PET) 섬유 표면의 화학적 성질을 개질 하였다. 자외선 조사에 의하여 PET 섬유의 화학결합이 절단되어 섬유표면에 COOH기가 생성되고 자외선 조사시간에 비례하여 COOH기가 증가함을 FT-IR과 XPS 분석에 의하여 확인하였으며 XPS측정을 통하여 PET 섬유 표면에 생성된 COOH기가 12개월후에도 변화가 없음을 알 수 있었다. 또한 자외선 조사 PET 섬유에 기능성을 부여하기 위하여 사용한 친수성의 양이온성 천연화합물이, 자외선 조사 PET 섬유에 용이하게 흡착되는 현상으로부터 자외선 조사에 의하여 PET 섬유표면에 음이온성을 나타내는 COOH기가 존재함을 흡착실험을 통하여 확인하였다. 항균성 및 소취성을 측정한 결과 자외선 조사시간이 30분 이상인 경우에 99% 이상의 항균성과 75% 이상의 소취성을 나타내는 기능성 PET 섬유의 제조가 가능하였다.

• 한국염색가공학회지
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• 제29권3호
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• pp.148-154
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• 2017

Many researches have been made on the processing technology of Poly(ethylene terephthalate) (PET), which is widely used for clothing and non-clothing applications. In this study, we coated PET filaments with m-aramid resin to improve heat resistance and antimicrobial properties. In order to enhance adhesion between PET and m-aramid polymer, the adhesive polymer was coated on the PET filaments using a winding speed of 100m/min and then treated with m-aramid. Scanning electron microscopy was used to analyze the surface of the adhesive polymer and m-aramid treated PET filament. The change of initial degradation temperature according to treatment was confirmed by thermogravimetric analysis. Antimicrobial activity analysis using bacterial reduction method showed that PET filament treated with adhesive polymer and m-aramid had an increased antibacterial effect compared to untreated PET filament.

• Composites Research
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• 제33권5호
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• pp.282-287
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• 2020

본 연구에서는 저 융점 폴리에틸렌 테레프탈레이트(PET) 섬유(Low melting PET fiber: LMF)가 복합화된 PET 시트의 고밀도화 공정을 통해 고강도 PET 시트를 제조하였다. 복합화된 LMF는 열처리 과정에서 용융되어 개개의 PET 섬유를 연결해 섬유간의 계면결합력을 향상시켰다. 또한 PET시트의 고밀도화는 거대기공밀도를 감소시키고 중첩된 PET 네트워크간의 결합력을 향상시켜 결과적으로 압축 전 LMF-PET 시트와 비교하여 연신율은 유지하면서 약 410% 향상된 인장강도를 보여주었다. 또한 강화된 결합력은 PET 섬유 네트워크의 수축을 방지하여 우수한 치수안정성을 나타내었다.

• 한국의류학회지
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• 제17권3호
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• pp.380-390
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• 1993

Effect of interfacial electrical conditions on adhesion of ${\alpha}-Fe_2O_3$ particles to PET fabric and the removal of ${\alpha}-Fe_2O_3$ particles from PET fabric, were investigated as functions of pH, electrolyte and ionic strength. The ${\zeta}$ potential of PET fiber and ${\alpha}-Fe_2O_3$ particles in the electrolyte solution were measured by streaming potential and microelectrophoresis methods respectively. The potential energy of interaction between ${\alpha}-Fe_2O_3$ particles and PET fabric were calculated by using the heterocoagulation theory for a sphere-plate model. The negative ${\zeta}$ potential of ${\alpha}-Fe_2O_3$ particle and PET fiber increased with pH, and then decreased certain pH and isoelectric points of ${\alpha}-Fe_2O_3$ particles and PET fiber were pH 6.5 and pH 3.5, respectively. The negative ${\zeta}$ potential of ${\alpha}-Fe_2O_3$ particle and PET fiber affected by electrolytes, were relatively high with polyanion electrolytes in solutions and were low with neutral salts. However, at surfactant solution, ${\zeta}$ potential was levelled off. The influence of the ionic strength on the ${\zeta}$ potential of ${\alpha}-Fe_2O_3$ particle was small but the negative ${\zeta}$ potential of PET fiber increased with the ionic strength. In the presence of anionic surfactant, the ${\zeta}$ potential of ${\alpha}-Fe_2O_3$ particle and PET fiber increased regardless of solution conditions. The interaction energy between ${\alpha}-Fe_2O_3$ particle and PET fabric increased with pH. The interaction energy was relatively high with polyanion electrolytes in solution, and the influence of ionic strength on the interaction energy was small, and the effective thickness of electrical double layer increased with decreasing the ionic strength.

• 한국염색가공학회지
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• 제32권4호
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• pp.208-216
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• 2020

In this study, C.I. Disperse Red 60 (DR60), C.I. Disperse Yellow 54 (DY54) dyes were used to investigate the washing fastness characteristics of PET fibers according to supercritical CO2 and aqueous dyeing process. The changes in K/S values and L⁎ values before and after washing of dyed PET fibers were observed according to the KS K ISO 105 washing fastness measurement method. In addition, it was confirmed by changing the ΔE⁎ and ΔL⁎ values of control PET fibers. Overall, it was confirmed that both the supercritical CO2 and aqueous dyeing process had excellent washing fastness ratings of 4-5 for DR60 and DY54 dyes. Comparatively, the K/S and L⁎ values for before and after washing of PET fibers with supercritical CO2 dyeing process was higher than that of the aqueous dyeing process and the ΔE⁎ and ΔL⁎ values of the control PET fibers were low. From the results, we observed that the supercritical CO2 dyeing process of PET fibers has better washing fastness characteristics than the aqueous dyeing process.

• 펄프종이기술
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• 제44권5호
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• pp.14-20
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• 2012

In this paper, the flame-retardant wall paper was successfully prepared with recycled polyethylene terephthalate (PET) short cut fiber with flame-retardant property and wood pulp using polyvinyl alcohol (PVA) as binder followed by treatment of non-halogen flame retardant. Physical properties such as formation index, tensile strength, elongation, and burst strength increased as defibrillation increased except tear strength. Bulk increased but formation index, tensile strength, elongation and burst strength decreased along with addition of PET short cut fiber. It was also found that tear strength rose significantly up to 30% of PET short cut fiber and then declined (fell) rapidly. As addition level of PVA increased tensile strength, elongation and burst strength increased, but tear strength decreased slightly. Addition of 20% of PET short cut fiber and 13% of PVA provided the flame-retardant wall paper with both improved flameproofing and physical properties.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2001년도 가을 학술발표회 논문집
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• pp.351-354
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• 2001

Poly(ethylene terephthalate) (PET)는 물리적, 기계적 성질이 우수한 엔지니어링 플라스틱의 하나로 섬유, 필름, 및 여러 가지 용도로 다양하게 사용되고 있다. PET는 DMT(dimethyl terephthalate) 또는 TPA(terephthalic acid)와 EG(ethylene glycol)를 축합 중합하여 제조한다. (중략)

• 콘크리트학회논문집
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• 제21권3호
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• pp.265-273
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• 2009

환경문제에 대한 높은 관심으로 친환경 콘크리트의 개발을 위해 많은 연구가 수행되어지고 있으며, 특히 콘크리트 배합시 시멘트 사용량을 줄이기 위한 노력이 계속되고 있다. 시멘트 사용량을 줄이기 위한 방법으로는 포졸란 반응재료들이 혼화재로 사용되고 있다. 우리나라 전역에 널리 매장되어 있는 황토는 친환경 재료로서, 포졸란 반응을 하는 활성황토는 콘크리트의 혼화재로 활용성이 증가하고 있다. 본 연구는 황토와 재생 PET 섬유가 콘크리트의 건조수축에 미치는 영향을 조사하기 위하여 수행되었다. 따라서 본 연구에서는 황토와 재생 PET 섬유를 혼입한 콘크리트 거동 특성을 분석하기 위하여 건조수축 시험을 통해 황토와 재생 PET 섬유를 혼입한 콘크리트의 재료특성을 평가하였다. 실험결과, 외부구속균열 및 자유수축변형 실험을 통하여 혼화재로서 황토가 콘크리트의 건조수축을 줄이는 효과가 있음을 확인하였으며, 재생 PET 섬유는 건조수축에 의한 외부구속균열을 제어하는 효과가 있는 것으로 분석되었다.