聚氨酯工业
聚氨酯工業
취안지공업
POLYURETHANE INDUSTRY
2014年
6期
17-21
,共5页
脂肪族聚氨酯%弹性体%软段结构%形态%力学性能%耐热性能
脂肪族聚氨酯%彈性體%軟段結構%形態%力學性能%耐熱性能
지방족취안지%탄성체%연단결구%형태%역학성능%내열성능
aliphatic polyurethane%elastomer%soft segment structure%morphology%mechanical property%ther-mal property
分别采用聚丙二醇( PPG)、聚四氢呋喃二元醇( PTMG)、聚己二酸一缩二乙二醇三羟甲基丙烷酯多元醇(726)和聚己二酸新戊二醇酯二元醇(756)4种不同软段制备了基于异佛二酮二异氰酸酯( IPDI )的脂肪族聚氨酯弹性体( PUE ),并通过FT?IR、DSC 和TGA 等表征了软段结构对PUE结构与性能的影响。结果表明,在相同硬段含量的条件下, PTMG制备的PUE具有最高的交联密度和最低的氨酯羰基氢键化程度。聚酯型PUE的耐热性和热氧老化性能均优于聚醚型PUE,由756合成的PUE具有最好的老化性能和热稳定性。
分彆採用聚丙二醇( PPG)、聚四氫呋喃二元醇( PTMG)、聚己二痠一縮二乙二醇三羥甲基丙烷酯多元醇(726)和聚己二痠新戊二醇酯二元醇(756)4種不同軟段製備瞭基于異彿二酮二異氰痠酯( IPDI )的脂肪族聚氨酯彈性體( PUE ),併通過FT?IR、DSC 和TGA 等錶徵瞭軟段結構對PUE結構與性能的影響。結果錶明,在相同硬段含量的條件下, PTMG製備的PUE具有最高的交聯密度和最低的氨酯羰基氫鍵化程度。聚酯型PUE的耐熱性和熱氧老化性能均優于聚醚型PUE,由756閤成的PUE具有最好的老化性能和熱穩定性。
분별채용취병이순( PPG)、취사경부남이원순( PTMG)、취기이산일축이을이순삼간갑기병완지다원순(726)화취기이산신무이순지이원순(756)4충불동연단제비료기우이불이동이이청산지( IPDI )적지방족취안지탄성체( PUE ),병통과FT?IR、DSC 화TGA 등표정료연단결구대PUE결구여성능적영향。결과표명,재상동경단함량적조건하, PTMG제비적PUE구유최고적교련밀도화최저적안지탄기경건화정도。취지형PUE적내열성화열양노화성능균우우취미형PUE,유756합성적PUE구유최호적노화성능화열은정성。
The aliphatic polyurethane elastomers ( PUE) based isophorone diisocyanate ( IPDI) were prepared from four kinds of soft segment polypropylene glycol, poly(tetramethylene ether glycol (PTMG), poly(neopentyl glycol adipate) glycol and poly( diethylene glycol?co?trimethylolpropane adipate) glycol, respectively. The struc?ture and properties of these PUEs were investigated by FT?IR,DSC and TGA,etc. The results showed that PUE pre?pared from PTMG had the highest crosslink density and the lowest degree of hydrogen bond in urethane carbonyl. However, PUEs based on polyester glycol had better thermal properties and aging properties than the PUEs based on polyether glycol. The polyurethane elastomer prepared from poly ( neopentyl glycol adipate) glycol had the best thermal and aging properties.