Compatibilized the thermosetting blend of epoxy and redistributed low molecular weight poly(phenylene oxide) with triallylisocyanurate

2016 ◽  
Vol 133 (20) ◽  
pp. n/a-n/a ◽  
Author(s):  
Wenjing Chen ◽  
Hongli Yang ◽  
Huawei Zou ◽  
Pengbo Liu
Keyword(s):  
Molecular Weight ◽  
Low Molecular Weight ◽  
Phenylene Oxide

Preparation, curing properties, and phase morphology of epoxy-novolac resin/multiepoxy-terminated low-molecular-weight poly(phenylene oxide) blend

2013 ◽  
Vol 54 (11) ◽  
pp. 2595-2604 ◽  
Author(s):  
Huan Wang ◽  
Jingzhao Mo ◽  
Baoqing Shentu ◽  
Zhixue Weng
Keyword(s):  
Molecular Weight ◽  
Phase Morphology ◽  
Low Molecular Weight ◽  
Novolac Resin ◽  
Phenylene Oxide

Synthesis and characterization of low-molecular-weight poly(2,6-dimethyl-1,4-phenylene oxide) in water

2012 ◽  
Vol 128 (5) ◽  
pp. 2919-2926 ◽  
Author(s):  
Lei Gui ◽  
Huan Wang ◽  
Baoqing Shentu ◽  
Zhixue Weng
Keyword(s):  
Molecular Weight ◽  
Synthesis And Characterization ◽  
Low Molecular Weight ◽  
Phenylene Oxide

Fluorinated low molecular weight poly(phenylene oxide): synthesis, characterization, and application in epoxy resin toward improved thermal and dielectric properties

2021 ◽  
pp. 110674
Author(s):  
Yubin Zhou ◽  
Zhongquan Peng ◽  
Jingqi Ji ◽  
Yancheng Wu ◽  
Zhigeng Chen ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Dielectric Properties ◽  
Epoxy Resin ◽  
Low Molecular Weight ◽  
Phenylene Oxide

Solubility and diffusivity of low molecular weight compounds in semi-crystalline poly-(2,6-dimethyl-1,4-phenylene)oxide: The role of the crystalline phase

2013 ◽  
Vol 443 ◽  
pp. 100-106 ◽  
Author(s):  
Michele Galizia ◽  
Christophe Daniel ◽  
Gaetano Guerra ◽  
Giuseppe Mensitieri
Keyword(s):  
Molecular Weight ◽  
Crystalline Phase ◽  
Low Molecular Weight ◽  
Phenylene Oxide ◽  
Low Molecular Weight Compounds

Synthesis and physical properties of low-molecular-weight redistributed poly(2,6-dimethyl-1,4-phenylene oxide) for epoxy resin

2008 ◽  
Vol 110 (3) ◽  
pp. 1880-1890 ◽  
Author(s):  
Hann-Jang Hwang ◽  
Su-Wen Hsu ◽  
Chun-Shan Wang
Keyword(s):  
Molecular Weight ◽  
Physical Properties ◽  
Epoxy Resin ◽  
Low Molecular Weight ◽  
Phenylene Oxide

Reactive blend of epoxy-novolac resin and epoxide-terminated low-molecular-weight poly(phenylene oxide)

2012 ◽  
Vol 127 (6) ◽  
pp. 4879-4888 ◽  
Author(s):  
Jingzhao Mo ◽  
Lei Xia ◽  
Pengju Pan ◽  
Baoqing Shentu ◽  
Zhixue Weng
Keyword(s):  
Molecular Weight ◽  
Low Molecular Weight ◽  
Novolac Resin ◽  
Phenylene Oxide ◽  
Reactive Blend

Block Copolymers Poly(2,6-dimethyl-1,4-phenylene oxide)-poly(6-hexanelactam). Preparation and Composition

1993 ◽  
Vol 58 (11) ◽  
pp. 2574-2582 ◽  
Author(s):  
Jaroslav Stehlíček ◽  
Rudolf Puffr
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Diblock Copolymer ◽  
Anionic Polymerization ◽  
Diblock Copolymers ◽  
Toluene Solution ◽  
Low Molecular Weight ◽  
Phenylene Oxide ◽  
End Groups ◽  
Tolylene Diisocyanate

Poly(2,6-dimethyl-1,4-phenylene oxide)-poly(6-hexanelactam) diblock copolymers were prepared from low-molecular weight poly(2,6-dimethyl-1,4-phenylene oxide) by transforming its phenolic end groups via the reaction with 2,4-tolylene diisocyanate and 6-hexanelactam to polymeric initiators and the subsequent anionic polymerization of 6-hexanelactam. The polymerization of 6-hexanelactam was carried out in bulk or toluene solution. The content of the 6-hexanelactam homopolymer was estimated by TLC showing that the pure diblock copolymer can be prepared in toluene. The reason for relatively low yields is discussed.

A high-performance oil-free backing pump for electron microscopes

1978 ◽  
Vol 36 (1) ◽  
pp. 110-111
Author(s):  
G.K.W. Balkau ◽  
E. Bez ◽  
J.L. Farrant
Keyword(s):  
Molecular Weight ◽  
Electron Microscope ◽  
Hot Spots ◽  
High Performance ◽  
Carbonaceous Material ◽  
Contamination Rate ◽  
Low Molecular Weight ◽  
Principal Source ◽  
Rotary Pumps ◽  
Electron Microscopes

The earliest account of the contamination of electron microscope specimens by the deposition of carbonaceous material during electron irradiation was published in 1947 by Watson who was then working in Canada. It was soon established that this carbonaceous material is formed from organic vapours, and it is now recognized that the principal source is the oil-sealed rotary pumps which provide the backing vacuum. It has been shown that the organic vapours consist of low molecular weight fragments of oil molecules which have been degraded at hot spots produced by friction between the vanes and the surfaces on which they slide. As satisfactory oil-free pumps are unavailable, it is standard electron microscope practice to reduce the partial pressure of organic vapours in the microscope in the vicinity of the specimen by using liquid-nitrogen cooled anti-contamination devices. Traps of this type are sufficient to reduce the contamination rate to about 0.1 Å per min, which is tolerable for many investigations.

Sign in / Sign up

Export Citation Format

Share Document