Positive ArF resist with 2EAdMA/GBLMA resin system

1999 ◽  
Author(s):  
Yasunori Uetani ◽  
Hiroaki Fujishima ◽  
Kaoru Araki ◽  
Kazuhisa Endo ◽  
Ichiki Takemoto
Keyword(s):  
Resin System

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).

Long-term release of chlorhexidine from dental adhesive resin system using human serum albumin nanoparticles

2014 ◽  
Vol 71 (4) ◽  
pp. 875-886 ◽  
Author(s):  
Hyun-Jin Kim ◽  
Tae-Yub Kwon ◽  
Kyo-Han Kim ◽  
Soon-Taek Kwon ◽  
Dae-Hyun Cho ◽  
...  
Keyword(s):  
Human Serum Albumin ◽  
Serum Albumin ◽  
Human Serum ◽  
Resin System ◽  
Adhesive Resin ◽  
Dental Adhesive ◽  
Albumin Nanoparticles

Marginal integrity of ceramic inlays luted with a self-curing resin system

2003 ◽  
Vol 19 (4) ◽  
pp. 270-276 ◽  
Author(s):  
Marco Ferrari ◽  
Alessandra Dagostin ◽  
Andrea Fabianelli
Keyword(s):  
Resin System ◽  
Ceramic Inlays ◽  
Marginal Integrity

scholarly journals Triblock Copolymer Toughening of a Carbon Fibre-Reinforced Epoxy Composite for Bonded Repair

Polymers ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 888 ◽  
Author(s):  
Andrew Charles ◽  
Andrew Rider
Keyword(s):  
Fracture Toughness ◽  
Triblock Copolymer ◽  
Peel Strength ◽  
Positive Pressure ◽  
Resin System ◽  
Strength Performance ◽  
Performance Improvements ◽  
Bonded Repair ◽  
Epoxy Resin System ◽  
Bonded Composite

Epoxy resins are the most widely used systems for structural composite applications; however, they lack fracture toughness, impact strength and peel strength due to high cross-linking densities. Use of conventional toughening agents to combat this can lead to reductions in mechanical, thermal and processability properties desirable for bonded composite applications. In this work, an asymmetric triblock copolymer of poly(styrene)–b–poly(butadiene)–b–poly(methylmethacrylate) was used to modify an epoxy resin system, with the materials processed using both vacuum bag and positive pressure curing techniques. Interlaminar fracture toughness testing showed improvements in initiation fracture toughness of up to 88%, accompanied by a 6 °C increase in glass transition temperature and manageable reductions in gel-time. Shear testing resulted in a 121% increase in ultimate shear strain with only an 8% reduction in shear strength. Performance improvements were attributed to nano-structuring within the toughened resin system, giving rise to matrix cavitation and dissipation of crack front strain energy upon loading.

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