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Volume 65, Issue 7
Displaying 1-6 of 6 articles from this issue
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Yasunori TARU, Kyo TAKAOKA, Koichi KOBAYASHI, Masahisa TAKASAGO1992 Volume 65 Issue 7 Pages 409-414
Published: July 20, 1992
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSIn order to control the function at the surface of polypropylene (PP), nitration of the surface was carried out by the combined use of amino compounds and oxygen plasma treatment. The surface of the reformed PP was studied by using ESCA, EPMA and SEM.
In the case of the nitration with diamino compound, 1,2-diaminoethane (DAE), and plasma treatment, the quantity of nitrogen at the PP surface was about twice of that treated with monoamino compound, such as n-butylamine, aniline, or m-toluidine.
The effiency of the nitrogen at the PP surface was dependent on the order of the operation of the plasma treatment and the absorption of amino compounds, and a period after plasma treatment.
In the case of the combined use of tetraammonium chloride (TMAC) and plasma treatment, ammonium ion reacted with PP, but chloride ion dispersed.
The surface of PP on which DAE was absorbed was scooped out in mamy circle by plasma treatment, while many small cavities were formed on the TMAC-absorbed PP surface by plasma.View full abstractDownload PDF (1073K) -
Kouichi ANDOU1992 Volume 65 Issue 7 Pages 415-420
Published: July 20, 1992
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSThe evaluation standard of atomization for pneumatically atomizing devices has been the Sauter Mean Diameter (SMD). However, it was difficult for the SMD to express actual paint properties. According to our study, some evaluations of atomization other than the SMD based on particle size distribution were able to represent some paint properties as blow.
(1) Front transfer efficiency (similar to transfer efficiency, defined in the text) is correlated with the ratio of the particles above certain diameter (approximately 10-40 μm)
(2) Finished state of paint films is correlated with the particle diameter at a certain valume percent (close to 100%) of particles integrated from smallest diameter.
We also found it desirable to adopt new items for the evaluation of spray gun as follows.
(1) Minimum diameter of particles which can be transfer.
(2) Prevention of the generation of large particles.View full abstractDownload PDF (692K) -
Naoki OGURI, Akira ONISHI, Shigeki UCHINO, Xigao JIN1992 Volume 65 Issue 7 Pages 421-426
Published: July 20, 1992
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSA Curie-point direct injection probe that can be used as an injector for mass spectrometry is described. The probe consists of an injection probe and a radiofrequency power supply. The pyrolysis section of the injection probe is made of a ceramic and metals without using organic material around the Curie-point pyrolysis section in order to prevent noise development. The power is 48 W at 10 MHz. The temperature rise time and the heating time range of the probe are 0.2 s and 0.1-10 s, respectively. The details of the construction and the evaluation of the injection probe are described. The reproducibility is demonstrated for the thermal degradation of polystyrene and methyl methacrylate copolymer pyrolyzed at 445°C.View full abstractDownload PDF (591K) -
Koichi FUJISAWA, Yukikazu UEMURA1992 Volume 65 Issue 7 Pages 427-434
Published: July 20, 1992
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (1132K) -
Toyohiko YOSHIDA1992 Volume 65 Issue 7 Pages 435-440
Published: July 20, 1992
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (625K) -
Hidenobu ISHIKAWA1992 Volume 65 Issue 7 Pages 441-452
Published: July 20, 1992
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (1197K)
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