New pegylated hyperbranched polyester as chemical modifier of epoxy resins in UV cationic photocuring

2011 ◽  
Vol 71 (4) ◽  
pp. 417-424 ◽  
Author(s):  
D. Foix ◽  
X. Fernández-Francos ◽  
X. Ramis ◽  
A. Serra ◽  
M. Sangermano
Keyword(s):  
Epoxy Resins ◽  
Chemical Modifier ◽  
Hyperbranched Polyester

Curing behavior and toughening performance of epoxy resins containing hyperbranched polyester

2004 ◽  
Vol 15 (11) ◽  
pp. 639-644 ◽  
Author(s):  
Gang Xu ◽  
Wenfang Shi ◽  
Ming Gong ◽  
Fei Yu ◽  
Jianping Feng
Keyword(s):  
Epoxy Resins ◽  
Hyperbranched Polyester ◽  
Curing Behavior

The mechanical behaviors of epoxy-terminated hyperbranched polyester (E-HBP) as toughener in different epoxy resins

2018 ◽  
Vol 1 (2) ◽  
pp. 310-319 ◽  
Author(s):  
Min Xia ◽  
Huilian Yang ◽  
Jian Ling ◽  
Qifa Yao ◽  
Guoping Li ◽  
...  
Keyword(s):  
Epoxy Resins ◽  
Hyperbranched Polyester ◽  
Mechanical Behaviors

Thermomechanical and morphological properties of epoxy resins modified with functionalized hyperbranched polyester

2006 ◽  
Vol 46 (11) ◽  
pp. 1502-1511 ◽  
Author(s):  
I. Blanco ◽  
G. Cicala ◽  
C. Lo Faro ◽  
O. Motta ◽  
G. Recca
Keyword(s):  
Epoxy Resins ◽  
Morphological Properties ◽  
Hyperbranched Polyester

Preparation and toughening performance investigation of epoxy resins containing carbon nanotubes modified with hyperbranched polyester

2017 ◽  
Vol 75 (3) ◽  
pp. 1013-1026 ◽  
Author(s):  
Zengheng Hao ◽  
Lu Li ◽  
Xia Liao ◽  
Xingyue Sheng ◽  
Yi Zhang
Keyword(s):  
Carbon Nanotubes ◽  
Epoxy Resins ◽  
Hyperbranched Polyester

Epoxy Resin Embedment

1968 ◽  
Vol 26 ◽  
pp. 100-101
Author(s):  
J. G. Adams ◽  
M. M. Campbell ◽  
H. Thomas ◽  
J. J. Ghldonl
Keyword(s):  
Electron Microscopy ◽  
Electron Beam ◽  
Epoxy Resin ◽  
Light Microscope ◽  
Epoxy Resins ◽  
Image Contrast ◽  
Tissue Preservation ◽  
Resin System ◽  
Excellent Quality

Since the introduction of epoxy resins as embedding material for electron microscopy, the list of new formulations and variations of widely accepted mixtures has grown rapidly. Described here is a resin system utilizing Maraglas 655, Dow D.E.R. 732, DDSA, and BDMA, which is a variation of the mixtures of Lockwood and Erlandson. In the development of the mixture, the Maraglas and the Dow resins were tested in 3 different volumetric proportions, 6:4, 7:3, and 8:2. Cutting qualities and characteristics of stability in the electron beam and image contrast were evaluated for these epoxy mixtures with anhydride (DDSA) to epoxy ratios of 0.4, 0.55, and 0.7. Each mixture was polymerized overnight at 60°C with 2% and 3% BDMA.Although the differences among the test resins were slight in terms of cutting ease, general tissue preservation, and stability in the beam, the 7:3 Maraglas to D.E.R. 732 ratio at an anhydride to epoxy ratio of 0.55 polymerized with 3% BDMA proved to be most consistent. The resulting plastic is relatively hard and somewhat brittle which necessitates trimming and facing the block slowly and cautiously to avoid chipping. Sections up to about 2 microns in thickness can be cut and stained with any of several light microscope stains and excellent quality light photomicrographs can be taken of such sections (Fig. 1).

Technical notes on routine TEM procedures

1987 ◽  
Vol 45 ◽  
pp. 630-631
Author(s):  
K. Chien ◽  
R.L. Van de Velde ◽  
R.C. Heusser
Keyword(s):  
Epoxy Resins ◽  
Pathology Laboratory ◽  
Silicone Fluid ◽  
Image Position

Sectioning quality of epoxy resins can be improved by the addition of a 1% silicone 200 fluid (Dow Corning), however this produces a softer block. To compensate, a harder plastic has been used for embedding various tissues encountered in our pathology laboratory. Exact amounts of the plastic mixture can be directly made up for embedding as shown: The chart reveals a Poly/Bed 812 (WPE 145) to anhydride ratio of 1:0.7 and a NMA to DDSA ratio of 7:3. 1% silicone fluid is added to above mixtures.Due to impurities within the DDSA and NMA, the polymerized epoxy blocks vary in darkness and appear to affect sectioning quality. After discussing this problem with Polysciences Inc., they have agreed to purify their anhydrides in an effort to standardize the consistency of the plastic.

Stain contamination and embedding in electron microscopy

1986 ◽  
Vol 44 ◽  
pp. 50-53
Author(s):  
Hilton H. Mollenhauer
Keyword(s):  
Electron Microscopy ◽  
Information Retrieval ◽  
Epoxy Resins ◽  
Image Contrast ◽  
Sample Preservation ◽  
Factors Associated ◽  
Amount Of Information ◽  
Electron Microscopical ◽  
Contrast Information

Many factors (e.g., resolution of microscope, type of tissue, and preparation of sample) affect electron microscopical images and alter the amount of information that can be retrieved from a specimen. Of interest in this report are those factors associated with the evaluation of epoxy embedded tissues. In this context, informational retrieval is dependant, in part, on the ability to “see” sample detail (e.g., contrast) and, in part, on tue quality of sample preservation. Two aspects of this problem will be discussed: 1) epoxy resins and their effect on image contrast, information retrieval, and sample preservation; and 2) the interaction between some stains commonly used for enhancing contrast and information retrieval.

Reliable Bonding of Composite Laminates Using Reflowable Epoxy Resins

2019 ◽  
Author(s):  
Frank Palmieri ◽  
Tyler Hudson ◽  
Roberto Cano ◽  
Erik Tastepe ◽  
Dean Rufeisen ◽  
...  
Keyword(s):  
Composite Laminates ◽  
Epoxy Resins
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