A Study on the Synthesis and Characterization of Waterborne Polyurethanes for Water Vapor Permeable / Waterproof - Effect of PEG and DMPA Content 투습방수용 수분산 폴리우레탄의 합성 및 특성에 관한 연구 - PEG와 DMPA 함량의 영향 -원문보기
Kwak, Yong-Sil
(Department of Textile Engineering, Pusan National University)
,
Kim, Eun-Young
(Department of Textile Engineering, Pusan National University)
,
Kim, Han-Do
(Department of Textile Engineering, Pusan National University)
Polyurethane(PU) products are generally used in the automobile, paint, furniture, adhesive, the medical and textile industries. Recently, the increasing acceptance of waterborne polyurethane (WBPU) Is motivated by more stringent environmental requirements, such as the reduction of solvent emissions ...
Polyurethane(PU) products are generally used in the automobile, paint, furniture, adhesive, the medical and textile industries. Recently, the increasing acceptance of waterborne polyurethane (WBPU) Is motivated by more stringent environmental requirements, such as the reduction of solvent emissions into the atmosphere [1]. The application for textiles includes suede processing, soft-hand processing, wrinkle-free processing, antistatic processing, sizing and adhesives. (omitted)
Polyurethane(PU) products are generally used in the automobile, paint, furniture, adhesive, the medical and textile industries. Recently, the increasing acceptance of waterborne polyurethane (WBPU) Is motivated by more stringent environmental requirements, such as the reduction of solvent emissions into the atmosphere [1]. The application for textiles includes suede processing, soft-hand processing, wrinkle-free processing, antistatic processing, sizing and adhesives. (omitted)
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문제 정의
To improve the physical properties, a mixed or special type of polyol soft-segment PU was used for imparting PU with specific properties[7-11]. This article was focused on the effects of the PEG and DMPA compositions on the structure and physical properties of synthesized WBPU by using the PCL-PTMG-PCL triblock glycol as the soft-segment. In the synthesis of the PCL-PTMG-PCL triblock glycol from fixed molecular weights of PTMG by end-capped e-caprolatone(e-CL), the molecular weight was about 3000[12].
가설 설정
The sample designation, composition of waterborne polyurethanes prepared in this study are shown in Table 1. The particle size and viscosity of waterborne polyurethane dispersion and the water vapor permeability(WVP) of waterborne polyurethane coated fabrics are shown in Table 2. The particle size of WBPU dispersion increased with increasing PEG content. However, the viscosities of WBPU dispersion decreased a little with increasing DMPA content.
대상 데이터
The viscosity of waterborne polyurethane dispersion was measured at 2 5 ℃ using a Brookfield digital viscometer(Model LVDV- H + ). FTIR (Nicolet Impact 400D) spectrometer was used to identified the structure of TBG. For each IR spectrometer sample, 32 scans at 4cm"1 resolution were collected in the trasmittance model.
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