摘要
以甲苯二异氰酸酯(TDI)、自制松节油聚酯多元醇、丙烯酸羟丙酯等为原料,制备了可紫外光固松节油聚氨酯丙烯酸酯预聚体(TPUA),再与光引发剂、活性稀释剂配制成可UV固化涂料。通过凝胶率、硬度,附着力及力学性能测试和热重分析研究了光引发剂、活性稀释剂的种类、用量及配比对涂膜性能的影响。结果表明,光引发剂ITX与1173复配,m(ITX)∶m(1173)=1∶0.5,用量为6%;二官能团的活性稀释剂EB154和三官能团的TMPTA复配,m(EB154)∶m(TMPTA)=3∶1,用量为64%时,涂膜的铅笔硬度达到4H,附着力0级,拉伸强度13.3MPa,断裂伸长率为214.2%,涂膜还具有良好的热稳定性。
The UV-curable turpentine polyurethane acrylate prepolymer（ TPUA） was synthesized by TDI,self-made turpentine polyester polyols and hydroxypropyl acrylate. Then the UV curing coating was prepared by TPUA,photoinitiator and reactive diluent. The effects of photoinitiator and reactive diluent type,amount and ratio on the coating properties were investigated by the tests of gel fraction,hardness,adhesion and mechaincal property and TG analysis. The results indicated that the hardness,adhesion,tensile strength and elongation at break of the coatings was 4 H,0 level,13. 3 MPa,214. 2% ,respectively at the conditions as followed：complex photoinitiator of ITX and 1173,m（ ITX） ∶ m（ 1173） = 1∶ 0. 5,photoinitiator amount 6% （ based on the prepolymer） ; complex reactive diluents of two functional reactive diluent EB154 and three functional reactive diluent TMPTA ,m（ EB154） ∶ m（ TMPTA） = 3∶1,diluent amount 64% （ based on the prepolymer）. The coatings also had good thermal stability.
出处
《热固性树脂》
CAS
CSCD
北大核心
2010年第6期40-42,共3页
Thermosetting Resin
