Abstract:
PURPOSE: A polyurethane foam composition is provided to show an excellent mechanical property including the repulsive elasticity, elongation, permanent compression set by using castor oil based polyol which is a reproducible bio polyol. CONSTITUTION: A polyurethane foam composition includes polyol and a diisocyanate mixture. The polyol comprises (a) polyol obtained by adding propylene oxides and ethylene oxides to glycerine, (b) polymer polyol obtained by adding propylene oxides and ethylene oxides to polyol, and (c) polyol obtained by adding ethylene oxides and propylene oxides to castor oil. The diisocyanate mixture comprises 60-90 weight% of 4,4'-diphenylmethanediisocyanate, and 10-40 weight% of 2,4-toluenediisocyanate, 2,6-tolurenediisocyanate or their mixture.
Abstract:
PURPOSE: A method for fabricating artificial leather with air permeability is provided to strengthening bonding force between a fabric and a film and to prevent peeling or separation of the film. CONSTITUTION: A method for fabricating artificial leather with air permeability comprises: a step of napping the surface of a fabric(S2); a step of coating the back side of the fabric with napping using resin with hydrolysis resistance and flame retardancy for reinforcing the back side of the fabric(S2); a step of coating the napping surface of the fabric with water soluble PU resin solution to form a film(S4); a step of embossing the surface of the fabric(S5); a step of spraying water soluble resin solution on the film surface; and a step of spraying top protect resin on the film surface. [Reference numerals] (S1) Attaching softener; (S2) Napping; (S3) Strengthening back side; (S4) Coating; (S4-1) Primary application; (S4-2) Smoothing; (S4-3) Secondary application; (S5) Patterning; (S6) Painting; (S7) Strengthening surface
Abstract:
PURPOSE: A flexible polyurethane foam composition is provided to ensure moldability identical to the foam for existing automobile seats and to maintain continued antibacterial activity through chemical reaction between an isocyan group and a hydroxy group of modified cardanol or modified cardanol derivatives. CONSTITUTION: A flexible polyurethane foam composition with excellent antimicrobial durability comprises a resin premix and isocyanate. The resin premix comprises: 100 parts by weight of a polyol mixture containing 50~95 weight% of polyether polyol and 5~50 weight% of graft polymer polyol; 0.1~1 parts by weight of single or two or more antimicrobial agents selected from alkoxylated modified cardanol and modified cardanol derivatives; 0.3~1.5 parts by weight of amine-based catalyst; 0.3~3 parts by weight of surfactants; and 2~5 parts by weight of blowing agents.
Abstract:
본 발명은 기능성 폴리우레탄 폼에 관한 것으로, 보다 상세하게는 레진 프리믹스와 이소시아네이트 성분의 반응 생성물을 함유하는 폴리우레탄 폼으로서, 상기 레진 프리믹스는 폴리올 성분 및 발포제를 포함하고, 상기 이소시아네이트 성분은 전체 이소시아네이트 성분 중량 대비 모노머릭 메틸렌 디페닐 디이소시아네이트(MMDI) 4 ~ 70 중량%; 카르보디이미드 메틸렌 디페닐 디이소시아네이트(CMDI) 5 ~ 70 중량%; 및 폴리머릭 메틸렌 디페닐 디이소시아네이트(PMDI) 10 ~ 80 중량%; 를 포함하며, 자동차 시트 등에 적용 가능하여 운전 중에 발생하는 진동의 상당 부분을 흡수하여 진동 전달률이 최소화되는 기능성 폴리우레탄 폼에 관한 것이다.
Abstract:
본 발명은 나노케나프를 함유하는 폴리프로필렌 복합재료 조성물에 관한 것으로서, 더욱 상세하게는 섬유직경이 100 nm ~ 100 ㎛인 나노케나프를 충전제로 함유하는 폴리프로필렉 복합재료 조성물에 관한 것이다. 본 발명의 복합재료 조성물은 기존의 유리섬유, 탄소나노튜브 등의 충전제를 친환경적인 소재로 대체하면서도 우수한 기계적 강도를 가지므로, 자동차 내외장재 등에 적용하여 자동차의 경량화에 따른 연비 개선 효과를 거둘 수 있을 것으로 기대된다.