摘要
利用不同硅烷偶联剂改性ATP(凹凸棒石)或SiO2-ATP,并制备了相应的UF(脲醛树脂)胶粘剂。探讨了改性ATP或SiO2-ATP的工艺条件及其对UF胶粘剂的甲醛释放量、剪切强度等影响。结果表明:含氨基的硅烷偶联剂(A-1160和KH-792)对ATP/UF或SiO2-ATP/UF胶粘剂的甲醛释放量、剪切强度的影响较大;当w(A-1160或KH-792)=15%(相对于ATP质量而言)、w(改性ATP)=10%(相对于甲醛和尿素总质量而言)时,经60℃、3 h吸附后,相应UF胶粘剂的甲醛释放量分别下降了53.27%或53.04%,剪切强度分别增加了57.27%或46.73%;当w(A-1160或KH-792)=15%、w(改性SiO2-ATP)=10%时,经60℃、2 h吸附后,相应UF胶粘剂的甲醛释放量分别下降了34.84%或48.82%,剪切强度分别增加了68.88%或55.38%。
The ATP(attapulgite) or SiO2-ATP were respectively modified by different silane couplers,the corresponding UF(urea formaldehyde resin) adhesives were prepared. The technological conditions and influences of modified ATP or SiO2-ATP on formaldehyde emission and shear strength of UF adhesives were discussed. The results showed that the influences of silane coupler containing amino(A-1160 or KH-792) on formaldehyde emission and shear strength of ATP/UF or SiO2-ATP/UF adhesives were larger. The corresponding UF adhesives had the lower formaldehyde emissions(under 53.27% or 53.04% with modified ATP after absorbing 3 h at 60 ℃, under 34.84% or 48.82% with modified SiO2-ATP after absorbing 2 h at 60 ℃ ) and higher shear strengths (above 57.27% or 46.73% with modified ATP after absorbing 3 h at 60 ℃, above 68.88% or 55.38% with modified SiO2-ATP after absorbing 2 h at 60 ℃) when mass fractions of A-1160 or KH-792 were 15% in ATP, mass fractions of modified ATP or SiO2-ATP were 10% in total formaldehyde and urea.
出处
《中国胶粘剂》
CAS
北大核心
2013年第12期21-26,共6页
China Adhesives
基金
江苏省高校自然科学研究重大项目(11KJA430007)
江苏省科技支撑计划项目(BE2011125
BE2011663)
江苏省高校科技创新团队资金项目(2011-24)
常州市科技支撑计划项目(CE20110017)
关键词
凹凸棒石
硅烷偶联剂
脲醛树脂
胶粘剂
甲醛释放量
剪切强度
attapulgite (ATP)
silane coupler
urea formaldehyde resin (UF)
adhesive
formaldehyde emission
shear strength