Title :
The properties of reactive hot melt polyurethane adhesives with acrylic polymer or macromonomer modifications
Author :
Jung, Jin Su ; Kim, Jae Hoon ; Kim, Min Seok ; Jeong, Han Mo ; Cho, Youn Bok ; Kim, Yong Sung ; Kim, Tae Kyoon ; Hwang, Jeong Mi ; Lee, Sang Yun ; Cho, Yang Lae
Author_Institution :
Dept. of Chem., Ulsan Univ., Ulsan
Abstract :
The properties of reactive hot melt polyurethane adhesives (RHAs) modified by dihydroxyl-terminated reactive acrylic macromonomers were examined and compared with those of RHAs modified with a non-reactive commercial acrylic copolymer. The melt viscosity and initial bond strength was increased when a portion of the polyols and tackifier was replaced by macromonomers or acrylic copolymers, which have higher glass transition temperatures. When RHA was modified by macromonomer, the storage modulus at low shear rate was reduced and set time was increased, which suggests that the chain entanglement was diminished by short-chain branches created by the macromonomers.
Keywords :
adhesives; polymer blends; polymer melts; viscosity; acrylic copolymers; acrylic polymer; dihydroxyl-terminated reactive acrylic macromonomers; initial bond strength; macromonomer modifications; macromonomers copolymers; melt viscosity; nonreactive commercial acrylic copolymer; polyols; reactive hot melt polyurethane adhesives; tackifier; Acceleration; Bonding; Chemicals; Cooling; Glass; Inductors; Polymers; Resins; Temperature; Viscosity;
Conference_Titel :
Strategic Technologies, 2008. IFOST 2008. Third International Forum on
Conference_Location :
Novosibirsk-Tomsk
Print_ISBN :
978-1-4244-2319-4
Electronic_ISBN :
978-1-4244-2320-0
DOI :
10.1109/IFOST.2008.4603008