PAMAM can be used as modified additiv...

PAMAM can be used as modified additives for urea-formaldehyde resin adhesive

Posted in the Energy Forum

PAMAM

Jinan, China

#1 Jul 26, 2013
PAMAM can be used as modified additives for urea-formaldehyde resin adhesive
PAMAM can be used as modified additives for urea-formaldehyde resin adhesive, due to its special structure, a large number of end groups, as well as the nature of the end groups can greatly improve its urea-formaldehyde resin adhesive agent properties. PAMAM-NH2,-OH,-NH3Cl can well improve the performance of urea-formaldehyde adhesive, in particular the quaternary amine-modified PAMAM has more superior performance, compared with conventional curing agent of ammonium chloride, its shear strength increased by 64%.(1) PAMAM contains a large number of surface groups, easily array in the gas-liquid interface, urea-formaldehyde resin surface tension can be reduced , contact angle decreased, increasing the wettability of the wood material surface to provide adhesion.(2) PAMAM contains a large number of active groups to improve reactivity of the system. And form a chemical bridge between the adhesive and the base material to improve adhesion.(3) reducing the viscosity of the system to make it more uniform and efficient combination with wood.(4) dendrimer is more environmentally friendly as it can capture urea formaldehyde adhesives. Weihai CY Dendrimer Technology Co.,Ltd forwards from“Poly(amidoamine) Dendritic Structures, Bearing Different End Groups, as Adhesion Promoters for Urea–Formaldehyde Wood Adhesive System”Hisham A. Essawy, Heba A. Mohamed Department of Polymers and Pigments, National Research Center, Dokki 12311, Egypt Journal of Applied Polymer Science, Vol. 119, 760–767 (2011)
PAMAM

Jinan, China

#3 Jul 26, 2013
.Dendrimers can well improve the hydrophilicity of carbon fiber to further solve the limitations of its application.
Amino terminated dendrimers can well improve the hydrophilicity of carbon fiber, to further solve the limitations of its application. PAMAM modified carbon fibers can increase the wettability of the surface of carbon fibers, thereby increasing the affinity with the polymer matrix, for example combination with epoxy resin, compared with unmodified carbon fibers, its interfacial shear strength increased by 85 %. Weihai CY Dendrimer Technology Co. Ltd forwards from “Interfacial enhancement of carbon fiber composites by poly(amido amine) functionalization” Qingyu Peng , Yibin Li , Xiaodong He , Hongzhen Lv , Pingan Hu , Yuanyuan Shang , Chao Wang, Rongguo Wanga, Thirumany Sritharanc, Shanyi Du Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, PR China b Research Centre for Micro/Nanotechnology, Harbin Institute of Technology, Harbin 150080, PR China C School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore Composites Science and Technology 74 (2013) 37–42.

Tell me when this thread is updated:

Subscribe Now Add to my Tracker

Add your comments below

Characters left: 4000

Please note by submitting this form you acknowledge that you have read the Terms of Service and the comment you are posting is in compliance with such terms. Be polite. Inappropriate posts may be removed by the moderator. Send us your feedback.

Energy Discussions

Title Updated Last By Comments
News Fight against housing complex continues (Nov '16) Feb 15 Homeless Wino Pete 6
News Power generating station beginning to take shape (Jan '08) Feb 13 old-rules-new-pol... 135
News Inside The Herald - If a community is only wort... (Jan '08) Feb 12 much 2 late 59
News FPL unveils first solar-plus-storage system in ... Feb 9 Solarman 1
News People in Business (Jun '10) Jan 29 FART SUPPORTERS 2
News Rebacca Shoes Grand Opening (May '11) Jan 27 RICE FART 2
News Couple who fought AEP are left fighting the law... (Aug '10) Jan 26 Just_B_N_Me 260
More from around the web