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| 折扣與優(yōu)惠：團購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要:以丙烯酸丁酯、醋酸乙烯酯為原料，AIBN為引發(fā)劑，采用溶液聚合法制備溶劑型聚丙烯酸酯壓敏膠。討論了不同種類及用量的增粘樹脂對壓敏膠初粘性和剝離強度的影響。討論了加入極性單體HPA和SEBS與丙烯酸酯共聚后壓敏膠性能的變化。以N210、TDI、一縮二乙二醇為原料合成聚氨酯，聚氨酯再與含2%HPA的聚丙烯酸酯共聚合成壓敏膠。研究了加入增粘樹脂后壓敏膠剝離強度的變化。實驗結(jié)果表明，在丙烯酸酯壓敏膠體系中，加入增粘樹脂后，壓敏膠的初粘力下降，180°剝離強度增加。相較于138增粘樹脂和萜烯樹脂 ，801增粘樹脂的加入使得壓敏膠的各項性能最佳。當加入801增粘樹脂的量為20%時，剝離強度較大，為18.76N/25mm。在聚氨酯丙烯酸酯共聚體系中，隨著聚氨酯的加入量增加，初粘力變化不大，剝離強度先增加后降低。加入增粘樹脂后發(fā)現(xiàn)，當聚氨酯含量為30%、801增粘樹脂含量為20%時，壓敏膠的180°剝離強度達到最大，為40.90 N/25mm。 關(guān)鍵詞：丙烯酸酯壓敏膠；增粘樹脂；初粘力；剝離強度
Abstract:Acrylate pressure-sensitive adhesives were successfully synthesized with butyl acrylate , vinyl acetate as the raw materials , AIBN as initiator . They were synthesized by radical solution polymerization . The effect of the different kinds and amounts of tackifying resin on the pressure-sensitive adhesives was discussed . The properties were changed when polar monomer HPA and SEBS added to the system . Polyurethane was prepared by polyether 210 , toluene diisocyanate and diethylene glycol as the raw materials . Then , the copolymerization of polyurethane and acrylate was studied . The effect of the different proportions of tackifying resin on the peel strength of pressure-sensitive adhesive was investigated . The results showed that , compared to 138 tackifying resin and terpene resin , 801 tackifying resin makes pressure-sensitive adhesive of the best performance . The peel strength was largest when 20% 801 tackifying resin was added to the system . When the content of polyurethane in the copolymer was 30% , 801 tackifying resin was 20% , the peel strength of pressure-sensitive adhesive was 40.90N/25mm . Key words：acrylate pressure-sensitive adhesive ；tackifying resin ；initial adhesion ；peel strength
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