Preparation and properties of crosslinkable waterborne polyurethanes containing aminoplast(I)
作者： Ji Yun Kwon , Han Do Kim
DOI: 10.1007/BF03219097
关键词:
摘要: A series of crosslinkable, waterborne polyurethanes (I-WBPUs) were prepared by in-situ polymerization using isophorone diisocyanate (IPDI)/poly(tetramethylene oxide) glycol (PTMG,Mn=2,000)/ dimethylol propionic acid (DMPA)/ethylene diamine (EDA)/triethylamine (TEA)/aminoplast [hexakis(methoxymethyl)melamine (HMMM)] as a crosslinking agent. Typical (B-WBPUs) blended from WBPU dispersion and aqueous HMMM solution was also to compare with the I-WBPUs. The reaction between verified FTIR XPS analysis. effect contents on dynamic mechanical thermal, mechanical, adhesion properties I-WBPU B-WBPU films investigated. storage modulus (E′), glass transition temperatures soft segment (Tgs) amorphous regions higher order (Tgh), melting temperature (Tm), integral procedural decomposition (IPDT), residual weight,T10% andT50% (the where 10 50% weight loss occurred), tensile strength, initial modulus, hardness, adhesive strength both systems increased increasing content. However, these system than those at same These results confirmed used in this study be more effective method improve materials compared simple blending process.
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