Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/3755
標題: 異佛爾酮二異氰酸鹽為原料以預聚物法製備不黃變軟質聚胺酯發泡體
Preparation of non-yellowing flexible polyurethane foam by using IPDI-based prepolymer approach
作者: 陳俊安
Chen, Chun-An
關鍵字: non-yellowing;發泡體;polyurethane foam;Aliphatic isocyanate;prepolymer approach;聚胺酯;不黃變;脂肪族異氰酸鹽;預聚物法
出版社: 化學工程學系所
引用: 1.R. Herrington and K. Hock, Flexible Polyurethane Foams, 1990 2.賴耿陽,聚脲脂樹脂PU原理與實用,復漢出版社,1997 3.柯耀盛,全水發泡系統製備不黃變聚胺酯軟質發泡體,國立中興大學化學工程研究所,2006 4.鐘正宏,聚胺酯發泡體之耐黃變性質與光穩定性質研究,國立勤益科技大學化工與材料工程研究所,2005 5.D. Randall and S. Lee, The Polyurethanes Book; John Wiley & Sons. LTD, 2002 6.何蓓心,聚氨基甲酸酯/黏土奈米複合發泡體之製作與其性質研究,逢甲大學紡織工程研究所,2006 7.余家豪,脂肪族聚胺酯反應動力學之研究及發泡體合成,國立台灣大學化學工程研究所,2006 8.曾文聰,PU發泡體的結構與性質,國立中央大學化學工程研究所,2000 9.A. Strachota and B. Strachotova, ”Comparison of Environmentally Friendly, Selective Polyurethane Catalysts”, Materials and Manufacturing Processes, 23: 566-570, 2008 10.潘國龍,利用二氧化碳發泡製備抗熱之硬質發泡體研究,國立中興大學化學工程研究所,2003 11.山西省化工研究所,聚胺酯彈性體手冊,化學工業出版社,2001 12.K. Morimoto and Y. Tagagi, US5147897, 1992 13.R. Lomolder and F. Plogmann, ”Selectivity of Isophorone Diisocyanate in the Urethane Reaction Influence of Temperature, Catalysis, and Reaction Partners”, Journal of Coatings Technology, Vol.69, No.868, 1997 14.B. Armin and T. Ulrich, WO02074826, 2002 15.J. W. Britain and P. G. Gemeinhardt, ”Catalysis of the Isocyanate-Hydroxyl Reaction”, Journal of applied polymer science, Vol.IV, NO.11, 207-211, 1960 16.S. G. Luo and H. M. Tan, ”Catalytic Mechanisms of Triphenyl Bismuth, Dibutyltin Dilaurate, and Their Combination in Polyurethane-Forming Reaction”, J Appl Polym Sci, 65: 1217-1225, 1997 17.X. D. Zhang and C. W. Macosko, ”Role of Silicone Surfactant in Flexible Polyurethane Foam”, Journal of Colloid and Interface Science, 215, 270–279, 1999 18.B. D. Kaushiva, Structure-Property Relationships of Flexible Polyurethane Foams, 1999 19.R. A. Neff and C. W. Macosko, ”Simultaneous Measurement of Viscoelastic Changes and Cell Opening during Processing of Flexible Polyurethane”, Rheol Acta, 35: 656-666, 1996 20.J. L. Han and C. H. Yu, ”Kinetic Study of the Urethane and Urea Reactions of Isophorone Diisocyanate”, Journal of applied polymer science, Vol.107, No.6, 3891-3902, 2008 21.I. S. Bechara and F. P. Carroll, ”Unusual Catalysts For Flexible Urethane Foams”, Journal of Cellular Plastics, 16:89-101, 1980 22.C. Wilhelm and J. L. Gardette, ”Infrared analysis of the photochemical behaviour of segmented polyurethanes: 1. Aliphatic poly(ester-urethane)”, Polymer, Vol.38, No.16, 4019-4031, 1997 23.L. Irusta, and M. J. Fernandez-Berridi, ”Photooxidative behaviour of segmented aliphatic polyurethanes”, Polymer Degradation and Stability, 63, 113-119, 1999 24.X. D. Zhang, H. T. David, and C. W. Macosko, ”A New Cell Opening Mechanism in Flexible Polyurethane Foam”, Journal of Cellular Plastics, 35, 458-476, 1999 25.R. Neff, A. adedeji, and C. W. Macosko, ”Urea Hard Segment Morphology in Flexible Polyurethane Foam”, J Polym SciB: Polym Phys 36: 573–581, 1998 26.K. Yasunaga, X. D. Zhang, and C. W. Macosko, ”Skin Development in Free Rise, Flexible Polyurethane Foam”, Journal of Cellular Plastics, 33, 528-544, 1997 27.S. S. Sant’Anna, and D. A. Souza, ”Morphological and thermal analyses of flexible polyurethane foams containing commercial calcium carbonate”, Ecl. Quím., São Paulo, 33(2), 55-60, 2008 28.W. Li, A. J. Ryan, and I. K. Meier, ”Effect of Chain Extenders on the Morphology Development in Flexible Polyurethane Foam”, Macromolecules, 35 (16), 6306-6312, 2002 29.S. S. Sant’Anna and M. I. Yoshida, ”Physico-chemical Analysis of Flexible Polyurethane Foams Containing Commercial Calcium Carbonate”, Materials Research, Vol.11, No.4, 433-438, 2008
摘要: 
本實驗室已成功使用一次入料混合法配方製備開孔型不黃變聚胺酯軟質發泡體,本研究是以異佛爾酮二異氰酸鹽(IPDI)為主成分,並以水當發泡劑,預聚物的製備是在室溫下反應,關鍵的改變是本配方中使用部分IPDI預聚物,另外,搭配最佳化的發泡成分,藉由聚胺酯觸媒、界面活性劑、鏈延長劑,來調整發泡速率與交聯速率,進而平衡發泡體的狀況。
在本研究中最佳的聚胺酯配方為水3wt%和由IPDI與聚醚三官能基多元醇所製備預聚物含量為整個配方的65wt%,這個配方的調整導致反應速率變慢,使聚胺酯發泡數據的rising time(Rt)和tack free time(TFt)分別從55秒與309秒變成為130秒和495秒,同時發泡體中心的最大溫度從之前一次入料混合法的116℃適度的降為104℃,由於配方的改變,有效地補救之前一次入料混合法配方中觀察到的發泡體中心黃化(scorch)現象和發泡體底部出現的粉化形成。關於發泡體的性質,新配方製備出的發泡體增進了機械性質,其撕裂強度為1.22 kg/cm(v.s 0.94),抵抗強度為1.4 kg/cm2(v.s 1.22),延伸率為238%(from 200%),反撥彈性為39% (from 30%),硬度為25.6 Ib/50 in2。
隨著這些改善,相信新配方能更容易適合使用現有常見的發泡設備,進行大量的生產。

In this foaming process study, a successful one-shot
formulation for making non-yellowing open-cell polyurethane (PU) flexible foams has been achieved. Our study was based on isophorone diisocyanate (IPDI) as the main ingredient with water as a blowing additive, and carried out the initially mixing at room temperature. The key change in our formulation is the partial use of IPDI prepolymers in the formulation, coupling with our optimizations of foam ingredients including urethane catalyst, foaming surfactant and polyol extenders to balance the forming profiles dealing with blowing and cross-linking rates.
In doing so, we have determined that the optimal formulation was achieved with water used at 3wt% and IPDI-polyether triol prepolymer content at 65 wt% of the total formulation. This change of formulation resulted in retarding of the reaction profiles changes from previous 55 and 309 seconds for the foam rising time (Rt) and tact-free time (TFt) respectively to 130 and 495 seconds. In the meantime, the foam-core maximum temperature has been moderated to 104 ℃ from 116 ℃from our previous study. As the result, the scorching of the core and powder-formation under the foams, which observed in our previous formation, was effectively remedied. As for the foam properties, the new formulation produced foams with improved mechanical properties with its Splite tear strength of 1.22 kg/cm (vs 0.94), tensile strength strength of 1.4 kg/cm2 (vs 1.22), maximum elongation of 238% (from 200%), foam resiliency of 39% (from 30%) and the hardness of 25.6 Ib/50 in2.
With those improvements, it is believed that the new formulation could be more easily adapted for a large-scale production using the existing conventional foaming facility.
URI: http://hdl.handle.net/11455/3755
其他識別: U0005-1808200916391500
Appears in Collections:化學工程學系所

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