A Novel Elastic Urea–Melamine–Formaldehyde Foam: Structure and Properties

2016 ◽  
Vol 55 (32) ◽  
pp. 8743-8750 ◽  
Author(s):  
Yalong Liu ◽  
Xiaowen Zhao ◽  
Lin Ye
Keyword(s):  
Structure And Properties ◽  
Melamine Formaldehyde ◽  
Foam Structure

Preparation of a novel melamine foam structure and properties

2021 ◽  
pp. 51992
Author(s):  
Chao Yan ◽  
Ye‐Jun Luo ◽  
Wen‐Ge Zhang ◽  
Zi‐Fan Zhu ◽  
Pei‐Ying Li ◽  
...  
Keyword(s):  
Structure And Properties ◽  
Foam Structure ◽  
Melamine Foam

scholarly journals A Comparison of Mechanical Properties and Scaling Law Relationships for Silica Aerogels and their Organic Counterparts

1990 ◽  
Vol 207 ◽  
Author(s):  
R. W. Pekalaa ◽  
L. W. Hrubesh ◽  
T. M. Tillotson ◽  
C. T. Alviso ◽  
J. F. Poco ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Scaling Law ◽  
Silica Aerogels ◽  
Solution Chemistry ◽  
Low Density ◽  
Structure And Properties ◽  
Melamine Formaldehyde ◽  
Unique Type ◽  
Resorcinol Formaldehyde ◽  
Organic Aerogels

AbstractAerogels are a unique type of ultrafine cell size, low density foam. Traditional aerogels are inorganic, but the synthesis of organic aerogels has also been reported. In all cases, solution chemistry can be used to tailor the structure and properties of the resultant aerogels. This study examines the microstructural dependence of the compressive mechanical properties of silica, resorcinol-formaldehyde, carbon, and melamine-formaldehyde aerogels.

Thermosetting polyester foams by infiltration in soluble preforms

2017 ◽  
Vol 54 (4) ◽  
pp. 707-718 ◽  
Author(s):  
Fabrizio Quadrini ◽  
Carmine Lucignano ◽  
Loredana Santo
Keyword(s):  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Unsaturated Polyester Resin ◽  
Structure And Properties ◽  
Compression Tests ◽  
Foam Structure ◽  
Cyclic Compression ◽  
Foam Properties

Rigid thermosetting foams are produced by infiltration of an unsaturated polyester resin into a soluble preform. In the experimentation, preforms were made of carbamide particles which were compacted at different values of pressure to change the foam structure and properties. After resin polymerization, carbamide particles are evacuated by immersion in water, leaving pores into the samples. Foams with porosity ranging from 52% to 77% were obtained as a function of the preform density. Quasi-static and cyclic compression tests were performed to evaluate foam properties. By increasing porosity, the foam strength reduces as well as the energy adsorbed at failure, and the energy lost in each single loading–unloading cycle.

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