Comprehensive properties study of low-temperature imidized polyimide with curing accelerators

2020 ◽  
Vol 8 (42) ◽  
pp. 14886-14894
Author(s):  
Chao Huang ◽  
Jinhui Li ◽  
Deliang Sun ◽  
Rui Xuan ◽  
Yuying Sui ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Low Temperature ◽  
Comprehensive Properties ◽  
Low Temperature Imidization

Six curing accelerators of QL, IQL, 2-QL, 4-QL, 8-QL, and THQL were incorporated with PAA for low-temperature imidization. The results proved that the acidity and molecular structure possess significant effect on the properties of polyimides.

Low-temperature vibrational spectra and molecular structure of L-alanine

1990 ◽  
Vol 53 (2) ◽  
pp. 856-860 ◽  
Author(s):  
A. A. Ivanov ◽  
E. V. Korolik ◽  
N. I. Insarova ◽  
R. G. Zhbankov ◽  
V. P. Golubovich
Keyword(s):  
Molecular Structure ◽  
Low Temperature ◽  
Vibrational Spectra

Redetermination of the Crystal and Molecular Structure of Cyclohexasulfur, S6 [1]

1978 ◽  
Vol 33 (12) ◽  
pp. 1554-1555 ◽  
Author(s):  
Jürgen Steidel ◽  
Joachim Pickardt ◽  
Ralf Steudel
Keyword(s):  
Molecular Structure ◽  
Structural Analysis ◽  
Low Temperature ◽  
Single Crystals ◽  
Crystal And Molecular Structure ◽  
Torsion Angles ◽  
X Ray ◽  
Bond Angles

A low temperature (-90 °C) X-ray structural analysis of S6 single crystals yielded improved data for the bond distances (206.8 pm), bond angles (102.6°), and torsion angles (73.8°) of the D3d molecule which are in agreement with current theories of homonuclear sulfur bonds.

Low temperature breakdown behavior analysis of natural esters from the perspective of molecular structure

2020 ◽  
Vol 318 ◽  
pp. 114032
Author(s):  
Wenyu Ye ◽  
Jian Hao ◽  
Mengzhao Zhu ◽  
Jian Li ◽  
Ruijin Liao
Keyword(s):  
Molecular Structure ◽  
Low Temperature ◽  
Behavior Analysis

A Low Temperature Vaporization of Pb(THD)2 with NH3

1994 ◽  
Vol 361 ◽  
Author(s):  
June Key Lee ◽  
Wan In Lee ◽  
Seshu B. Desu
Keyword(s):  
Molecular Structure ◽  
Thin Films ◽  
Low Temperature ◽  
Elemental Analysis ◽  
Carrier Gas

ABSTRACTPb(THD)2 is one of the most popular CVD precursors for lead. It was found in this study that the volatility of Pb(THD)2 can be considerably improved by using ammonia as a carrier gas. An adduct between Pb(THD)2 and NH3 is generated in-situ, when the NH3 carrier gas is passed through the bubbler containing Pb(THD)2. The ammoniated precursor was isolated and its molecular structure was characterized by elemental analysis, infrared and NM.R. PbO thin films could be prepared with this precursor system while maintaining the bubbler temperature at 110° C, which is considerably lower than the temperature used with the Pb(THD)2 precursor in the commonly used carrier gas.

Study on Application of the Blends of Nitrile Rubber with Acrylate Rubber in the Coat-Metal Sealing Gasket

2011 ◽  
Vol 393-395 ◽  
pp. 1438-1442 ◽  
Author(s):  
Zu Min Qiu ◽  
Chao Yan Qin ◽  
Jun Ming Qiu
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Heat Resistance ◽  
Nitrile Rubber ◽  
Temperature Resistance ◽  
Oil Resistance ◽  
Comprehensive Properties ◽  
The Cost ◽  
Low Temperature Resistance

This paper discussed the effect of different blending ratio with BNR and ACM on the mechanical properties, heat resistance, low temperature resistance and oil resistance of coat-metal sealing gasket. The result showed that the comprehensive properties of the NBR/ACM blends at the ratio of 85/15 were preferable to the NBR and ACM, the low temperature resistance and oil resistance of NBR are taken into account. The cost of the blends were lower than the ACM. The blends can be used for coat-metal sealing gasket instead of NBR.

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