نتایج جستجو برای: urea formaldehyde resin

تعداد نتایج: 77915  

2009
B. J. Blaiszik

Microcapsules containing a solvent and reactive epoxy resin are a critical component for the development of cost-effective, low toxicity, and low flammability self-healing materials. We report a robust in situ encapsulation method for protection of a variety of oil soluble solvents and reactive epoxy resins surrounded by a thin, polymeric, urea–formaldehyde (UF) shell. Resin–solvent capsules ar...

Journal: :پژوهش های علوم و فناوری چوب و جنگل 0

in this study, the possibility of using canola stem residues for particleboard manufacturing was studied. the ratio of canola straw to the industrial particles was as 25:50, 50:50, 75:25 and 100:00 percents, respectively. urea formaldehyde resin was used as binder at three levels of 8, 10 and 12 percent based on oven dried weight of particles and the press time was at three level of 5, 6 and 7 ...

Journal: :international journal of environmental research 0
h. sid kalal nuclear fuel cycle school, nuclear science and technology research institute, aeoi, p.o.box 11365-3486, tehran, iran h. hoveidi graduate faculty of environment, university of tehran, p.o. box 14155-6135, tehran, iran m. thagiof nuclear fuel cycle school, nuclear science and technology research institute, aeoi, p.o.box 11365-3486, tehran, iran n. pakizevand nuclear fuel cycle school, nuclear science and technology research institute, aeoi, p.o.box 11365-3486, tehran, iran m.r. almasian nuclear fuel cycle school, nuclear science and technology research institute, aeoi, p.o.box 11365-3486, tehran, iran m.a. firoozzare nuclear fuel cycle school, nuclear science and technology research institute, aeoi, p.o.box 11365-3486, tehran, iran

a chelating resin is prepared by condensation polymerization of aniline with formaldehyde andcharacterized by ft-ir, elemental analysis and studied for the preconcentration and determination of traceplatinum ion from environmental water sample using inductively coupled plasma-atomic emission spectroscopy(icp-aes). the optimum ph value for sorption of the metal ions was 5. the maximum adsorption...

2007
E. Y. A. Okino D. E. Teixeira C. H. S. Del Menezzi

The objective of this research was to determine the physical and mechanical properties of oriented strandboard (OSB) using strands of Cupressus glauca Lam., before and after a thermal treatment, as well as to evaluate the susceptibility of the boards to fungi attack. Boards with nominal density of 0.70 g/cm3 were produced with 5% and 8% of urea-formaldehyde (UF) resin. Physical and mechanical p...

2006
Yi Zheng Zhongli Pan Ruihong Zhang Bryan M. Jenkins Sherry Blunk

The Athel tree, Tamarix aphylla (L), can potentially be used as a biomass crop to help manage saline subsurface drainage water in arid land irrigated agriculture. In this study, Athel wood was used to manufacture medium-density particleboard with an aim of developing new applications for the saline wood. The research investigated the effects of different types of adhesives, particle sizes, bark...

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