蓖麻油PU／HCAA互穿网络型聚合物的合成及其拉伸性能研究  

Preparing of Interpenetrating Polymer Networks from CO-PU/HCAA and Its Tension Strength Property

作　　者：彭翠华[1] 谭晓明[2] 朱志文[2] 王友平[2] 

机构地区：[1]华中师范大学化学学院,武汉430079 [2]孝感学院化学与材料科学学院,432100

出　　处：《聚氨酯工业》2008年第3期29-32,共4页Polyurethane Industry

基　　金：湖北省科技攻关项目(项目编号:2005101AAC64)

摘　　要：利用蓖麻油(CO)、甲苯二异氰酸酯(TDI)和丙烯酸-2-羟-3-氯丙酯(HCAA)等为原料,采用分步法制备出了蓖麻油聚氨酯-羟基丙烯酸酯互穿网络聚合物(CO-PU/HCAA IPN),利用红外光谱进行了结构表征并测定了CO-PU/HCAA IPN的力学性能。结果表明,在常温条件下,蓖麻油聚氨酯预聚体CO-PU能够与HCAA形成IPN;随着固化时间的延长,CO-PU/HCAA IPN的拉伸强度逐渐增大,8 d后达到最大值;随着CO-PU预聚体与HCAA双键摩尔比的增加,CO-PU/HCAA IPN的拉伸强度先增大后减小,在6∶1时达到最大值;增加CO-PU预聚体中摩尔比nNCO/nOH,CO-PU/HCAA IPN的拉伸强度先增大后减小,在摩尔比2.5时达到最大值;BPO和DBTDL的质量分数分别为0.5%和0.2%时,CO-PU/HCAA IPN的拉伸强度最大。The castor oil-based polyurethane/2-hydroxyl-3-chloropropyl acrylate interpenetrating polymer networks （CO-PU/HCAA IPN） were synthesized by CO, toluene diisocyanate（TDI） and HCAA, using fractional step method. The structure was characterized by FFIR and tensile strength was measured. The results showed that COPU arid HCAA Could prepare IPN in normal temperature and the tensile strength of IPN was gradually increased with curing time increasing, with the maximum at 8th day. With the increasing of CO-PU and HCAA double bond molar ratio, the tensile strength of CO-PU IPN increased at first and then decreased, the maximum was at 6： 1. With the increasing of nNCO/nOH, the tensile strength of CO-PU IPN increased at first and then decreased, the maximum was at 2. 5. The CO-PU/HCAA had the maximum tensile strength when the BPO content was 0. 5% and DBTDL content was 0. 2%.

关 键 词：互穿网络聚合物 蓖麻油 聚氨酯 羟基丙烯酸酯 拉伸性能 

分 类 号：O631.3[理学—高分子化学]