摘要
采用聚己二酸丁二醇酯(PBA)、异氟尔酮二异氰酸酯(IPDI)、二羟甲基丙酸(DMPA)等原料合成水性聚氨酯(WPU)乳液,考察了含氟丙烯酸酯MBFA-12的用量对WPU乳液性能的影响,并考察了环氧树脂E-44用量对复合改性WPU乳液性能及胶膜的耐水性、力学性能的影响。结果表明,在MBFA-12与E-44复合改性WPU中,MBFA-12由于高含量的—CF3侧链的存在,侧重提高WPU的接触角,降低胶膜吸水率,加入量以50%左右为宜,过高则会降低WPU乳液的稳定性;环氧树脂E-44侧重提高胶膜的交联度,进一步提高耐水性,同时也明显提高胶膜的力学性能。
A series of aqueous polyurethane containing fluoromonome（WPU-F） were synthesized from polybutyl-ene adipate（PBA）, isophorone diisocyanaie （IPD1）,dimethylolbutyric acid （DMPA）,etc. Then the influence of the content of dodecafluoroheptyl methacry-late（MBFA-12）on the property of WPU emulsiun,as well as the effects of epoxy resin （E-44）on the properties of WPU emulsion and the water resistance and mechanical performance of the glue film were discussed. The results show that for WPU modified with MBFA-12 and E-44, due to the intensive side-chain CF3 in MBFA-12,which may mainly increase the contact angle of WPU and decrease water absorption of glue film,50% is the proper ratio,too high MBFA-12 content will decrease the stability of the WPU emulsion：E-44 mainly improves the crosslinking degree of glue fihn,further improves the water resistance,and significantly increases the mechanical properties of the glue fihn as well.
出处
《新型建筑材料》
北大核心
2010年第7期82-85,共4页
New Building Materials
