Preparation and Characterization of Metatitanic Acid/Urea‐Formaldehyde Microcapsules as Wear‐Reducing Additives

2020 ◽  
Vol 45 (11) ◽  
pp. 1805-1812
Author(s):  
Jun Yan ◽  
Shaosen Lin ◽  
Mingqiu Wang ◽  
Weipu Zhao
Keyword(s):  
Urea Formaldehyde ◽  
Metatitanic Acid

Characterization of particleboard made from oil heat-treated rubberwood particles at different mixing ratios

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 6795-6810
Author(s):  
Nurul Fatiha Osman ◽  
Paimon Bawon ◽  
Seng Hua Lee ◽  
Pakhriazad Hassan Zaki ◽  
Syeed SaifulAzry Osman Al-Eldrus ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Oil Content ◽  
Urea Formaldehyde ◽  
Physical And Mechanical Properties ◽  
Thermal Characterization ◽  
High Dimensional ◽  
Mixing Ratios ◽  
Uf Resin ◽  
Heat Treated

Particleboard was produced by mixing oil heat-treated rubberwood particles at different ratios, with the goal of achieving high dimensional stability. Rubberwood particles were soaked in palm oil for 2 h and heat treated at 200 °C for 2 h. The treated particles were soaked in boiling water for 30 min to remove oil and were tested for chemical alteration and thermal characterization via Fourier-transform infrared spectroscopy and thermogravimetric analysis. Particleboard was fabricated by mixing treated rubberwood particles (30%, 50%, and 70%) with untreated particles (70%, 50%, and 30%, respective to previous percentages) and bonded with urea-formaldehyde (UF) resin. The results revealed that oil-heat treated particles had greater thermal stability than the untreated particles. The addition of oil heat treated particles improved the physical properties of the particleboard with no significant reduction in mechanical strength. However, this was only valid for ratios of 70% untreated to 30% treated and 50% untreated to 50% treated. When a ratio of 70% oil heat treated particles was used, both the physical and mechanical properties were reduced drastically, due to bonding interference caused by excessive oil content. Particleboard made with a ratio of 5:5 (treated to untreated) exhibited the best physical and mechanical properties.

Characterization of urea-formaldehyde adducts and resins by 13C-n.m.r. spectroscopy

Polymer ◽  
1977 ◽  
Vol 18 (9) ◽  
pp. 971-974 ◽  
Author(s):  
J.R. Ebdon ◽  
P.E. Heaton
Keyword(s):  
Urea Formaldehyde

Preparation and characterization of self-healing microcapsules with poly(urea-formaldehyde) grafted epoxy functional group shell

2009 ◽  
Vol 113 (3) ◽  
pp. 1501-1506 ◽  
Author(s):  
Rongguo Wang ◽  
Haiyan Li ◽  
Honglin Hu ◽  
Xiaodong He ◽  
Wenbo Liu
Keyword(s):  
Functional Group ◽  
Urea Formaldehyde ◽  
Self Healing

Characterization of urea—formaldehyde and melamine—formaldehyde adducts and resins by 15N n.m.r. spectroscopy

Polymer ◽  
1984 ◽  
Vol 25 (6) ◽  
pp. 821-825 ◽  
Author(s):  
J.R. Ebdon ◽  
P.E. Heaton ◽  
T.N. Huckerby ◽  
W.T.S. O'Rourke ◽  
J. Parkin
Keyword(s):  
Urea Formaldehyde ◽  
Melamine Formaldehyde
Sign in / Sign up

Export Citation Format

Share Document