Preparation method of epoxy resin sand based permeable material

This is the first report on a versatile and facile preparation method for well-defined and surface-skinless epoxy resin-based monolithic particles by polymerization-induced phase separation in an oil-in-oil emulsion system in the presence of a designed block copolymer.

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A simple preparation method and characterization of epoxy reinforced microporous phenolic open-cell sound absorbent foam

RSC Advances ◽

10.1039/c5ra09908k ◽

2015 ◽

Vol 5 (83) ◽

pp. 68003-68013 ◽

Cited By ~ 13

Author(s):

Rui Gong ◽

Qian Xu ◽

Yineng Chu ◽

Xingyue Gu ◽

Jie Ma ◽

...

Keyword(s):

Epoxy Resin ◽

Preparation Method ◽

Open Cell ◽

Simple Preparation

A series of micro-porous phenolic open-cell sound absorbent foams reinforced by epoxy resin were fabricated by a physical foaming method.

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The Influence of the Fastener Hole Preparation Method on the Fastener Pull-Through Process in a Carbon Composite

Transactions on Aerospace Research ◽

10.2478/tar-2017-0005 ◽

2017 ◽

Vol 2017 (1) ◽

pp. 45-53

Author(s):

Maciej Karny

Keyword(s):

Carbon Fibre ◽

Epoxy Resin ◽

Preparation Method ◽

Uv Light ◽

Failure Mechanisms ◽

Carbon Composite ◽

Fastener Hole ◽

Plate Production ◽

Pull Through ◽

Special Fibre

Abstract This article studies the pull-through resistance of a titanium carbon fibre-epoxy resin laminate fastener. Coupons with fastener holes made with different methods were compared – drilled, milled on a CNC plotter and special fibre application during laminate production. The tests were conducted according to the ASTM D7332 test standard. The studies showed that the fastener hole preparation method impacts the laminate’s resistance to fastener pull-through. Coupons with holes made with standard (drilling and milling) methods showed fastener pull-through resistance higher, on average, by 6.5% than in coupons with holes placed during plate production. Fastener work to rupture was also higher for coupons with milled and drilled holes. Microscopic observations in UV-light, using a fluorescent penetrant, showed differences in failure mechanisms between individual coupons, especially the lack of fibres in the 0° direction, in immediate vicinity to a hole prepared during laminate application.

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A simple preparation method of epoxy resin/silica nanocomposite for Tg loss materialElectronic supplementary information (ESI) available: infrared spectrum of silica directly obtained from TEOS and acetic anhydride in autoclave, SEM image of Sample 3-5, 1H NMR spectra of DGEBA-1, DGEBA-3, allyl-DGEBA-3, Si-DGEBA-3, hydridodimethylsilyloxy-POSS and POSS-DGEBA-3. See http://www.rsc.org/suppdata/jm/b3/b315474b/

Journal of Materials Chemistry ◽

10.1039/b315474b ◽

2004 ◽

Vol 14 (7) ◽

pp. 1195 ◽

Cited By ~ 38

Author(s):

Masahiro Fujiwara ◽

Katsunori Kojima ◽

Yuko Tanaka ◽

Ryoki Nomura

Keyword(s):

Infrared Spectrum ◽

Acetic Anhydride ◽

Epoxy Resin ◽

1H Nmr ◽

Nmr Spectra ◽

Preparation Method ◽

1H Nmr Spectra ◽

Supplementary Information ◽

Sem Image ◽

Simple Preparation

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Carbon Fiber Reinforced Epoxy Resin Matrix Composites

Materials Science Advanced Composite Materials ◽

10.18063/msacm.v1i1.500 ◽

2018 ◽

Vol 1 (1) ◽

Author(s):

Yu Zhiyuan

Keyword(s):

Epoxy Resin ◽

Preparation Method ◽

Polymer Matrix Composites ◽

Resin Matrix ◽

Resin Composites ◽

Matrix Composites ◽

Fuel Cell Application ◽

Reinforced Polymer ◽

Automotive Fuel ◽

Epoxy Resin Composites

Carbon fi ber reinforced polymer matrix composites have been the focus of research. As the most widely used epoxyresin in all matrix materials, it is also the most studied. In this paper, the modification of TDE-85 epoxy resin, thecuring properties of curing agent and the preparation method of prepreg were reviewed. The progress and applicationof carbon fi ber reinforced epoxy resin composites at home and abroad were reviewed, made carbon fi ber / epoxy resincomposite materials in the automotive fuel cell application prospects.

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A Novel Preparation Method of Electrically Conductive Adhesives by Powder Spraying Process

Materials ◽

10.3390/ma12172793 ◽

2019 ◽

Vol 12 (17) ◽

pp. 2793

Author(s):

Hongyu Dong ◽

Xin Li ◽

Yi Dong ◽

Shaoqing Guo ◽

Liangfu Zhao

Keyword(s):

Epoxy Resin ◽

Preparation Method ◽

Preparation Process ◽

Conductive Adhesives ◽

Electrically Conductive ◽

Conventional Process ◽

Electrically Conductive Adhesive ◽

Conductive Fillers ◽

Powder Spraying ◽

Spraying Process

In a conventional electrically conductive adhesive (ECA) preparation process, typical ECAs are made by adding an appropriate amount of electrically conductive fillers, such as silver, into a polymer matrix, such as epoxy resin, to form a uniformly dispersed mixture by mixing and stirring operations. However, during the preparation process, secondary pollution and mass loss are caused by the vigorous mixture process. At the same time, the stirring operation introduces many small and stable bubbles, which affect the electrical conductivity of the ECAs. In light of these problems with the conventional preparation of ECAs, we developed a novel ECA preparation method that employs a powder spraying process: silver flakes are sprayed into the epoxy resin with a certain mass fraction to form formulated pastes. The as-prepared ECAs exhibited excellent properties compared with those prepared by the conventional process. This proves that the powder spraying process is feasible and superior to the conventional process.

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Direct Observation of Heat Exchanger Deposits by Cross Sectioning

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100061835 ◽

1967 ◽

Vol 25 ◽

pp. 364-365

Author(s):

R. W. Anderson ◽

D. L. Senecal

Keyword(s):

Electron Microscopy ◽

Transmission Electron Microscopy ◽

Heat Exchanger ◽

Direct Observation ◽

Cross Sections ◽

Preparation Method ◽

Specimen Preparation ◽

Flowing Water ◽

Transmission Electron ◽

Deposit Layer

A problem was presented to observe the packing densities of deposits of sub-micron corrosion product particles. The deposits were 5-100 mils thick and had formed on the inside surfaces of 3/8 inch diameter Zircaloy-2 heat exchanger tubes. The particles were iron oxides deposited from flowing water and consequently were only weakly bonded. Particular care was required during handling to preserve the original formations of the deposits. The specimen preparation method described below allowed direct observation of cross sections of the deposit layers by transmission electron microscopy.The specimens were short sections of the tubes (about 3 inches long) that were carefully cut from the systems. The insides of the tube sections were first coated with a thin layer of a fluid epoxy resin by dipping. This coating served to impregnate the deposit layer as well as to protect the layer if subsequent handling were required.

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Ultrastructural investigation of spontaneous pituitary gonadotroph cell adenomas in aging Sprague-Dawley rats

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100077086 ◽

1983 ◽

Vol 41 ◽

pp. 702-703

Author(s):

D. J. McComb ◽

J. Beri ◽

F. Zak ◽

K. Kovacs

Keyword(s):

Electron Microscopy ◽

Animal Model ◽

Epoxy Resin ◽

Immunoelectron Microscopy ◽

Tumor Type ◽

Gonadal Function ◽

Sprague Dawley ◽

Male And Female ◽

Reticulin Fibers ◽

Sprague Dawley Rats

Gonadotroph cell adenomas of the pituitary are infrequent in human patients and are not invariably associated with altered gonadal function. To date, no animal model of this tumor type exists. Herein, we describe spontaneous gonadotroph cell adenomas in old male and female Sprague-Dawley rats by histology, immunocytology and electron microscopy.The material consisted of the pituitaries of 27 male and 38 female Sprague Dawley rats, all 26 months of age or older, removed at routine autopsy. Sections of formal in-fixed, paraffin-embedded tissue were stained with hematoxylin-phloxine-saffron (HPS), the PAS method and the Gordon-Sweet technique for the demonstration of reticulin fibers. For immunostaining, sections were exposed to anti-rat β-LH, anti-ratβ-TSH, anti-rat PRL, anti-rat GH and anti-rat ACTH 1-39. For electron microscopy, tissue was fixed in 2.5% glutaraldehyde, postfixed in 1% OsO4 and embedded in epoxy-resin. Tissue fixed in 10% formalin, embedded in epoxy resin without osmification, was used for immunoelectron microscopy.

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Surface Structure in Microtomed Sections Caused by Glass and Diamond Knives

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100066334 ◽

1971 ◽

Vol 29 ◽

pp. 456-457

Author(s):

J. Temple Black ◽

William G. Boldosser

Keyword(s):

Plastic Deformation ◽

Epoxy Resin ◽

Carbon Coating ◽

Surface Damage ◽

Body Angle ◽

Normal Manner ◽

Bottom Side ◽

Cutting Direction ◽

Made In ◽

Diamond Knife

Ultramicrotomy produces plastic deformation in the surfaces of microtomed TEM specimens which can not generally be observed unless special preparations are made. In this study, a typical biological composite of tissue (infundibular thoracic attachment) infiltrated in the normal manner with an embedding epoxy resin (Epon 812 in a 60/40 mixture) was microtomed with glass and diamond knives, both with 45 degree body angle. Sectioning was done in Portor Blum Mt-2 and Mt-1 microtomes. Sections were collected on formvar coated grids so that both the top side and the bottom side of the sections could be examined. Sections were then placed in a vacuum evaporator and self-shadowed with carbon. Some were chromium shadowed at a 30 degree angle. The sections were then examined in a Phillips 300 TEM at 60kv.Carbon coating (C) or carbon coating with chrom shadowing (C-Ch) makes in effect, single stage replicas of the surfaces of the sections and thus allows the damage in the surfaces to be observable in the TEM. Figure 1 (see key to figures) shows the bottom side of a diamond knife section, carbon self-shadowed and chrom shadowed perpendicular to the cutting direction. Very fine knife marks and surface damage can be observed.

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