SU512999A1 - The method of obtaining highly sensitive to electronic excitation of cathode chromic sodalite - Google Patents

The method of obtaining highly sensitive to electronic excitation of cathode chromic sodalite

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Publication number
SU512999A1
SU512999A1 SU2033126A SU2033126A SU512999A1 SU 512999 A1 SU512999 A1 SU 512999A1 SU 2033126 A SU2033126 A SU 2033126A SU 2033126 A SU2033126 A SU 2033126A SU 512999 A1 SU512999 A1 SU 512999A1
Authority
SU
USSR - Soviet Union
Prior art keywords
microns
gel
aluminum
sodalite
hydrolysis
Prior art date
Application number
SU2033126A
Other languages
Russian (ru)
Inventor
Евгений Александрович Кириллов
Надежда Алексеевна Ксенофонтова
Евгений Григорьевич Скрябенков
Наум Петрович Сощин
Original Assignee
Предприятие П/Я Г-4937
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Publication date
Application filed by Предприятие П/Я Г-4937 filed Critical Предприятие П/Я Г-4937
Priority to SU2033126A priority Critical patent/SU512999A1/en
Application granted granted Critical
Publication of SU512999A1 publication Critical patent/SU512999A1/en

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(54) СПОСОБ ПОЛУЧЕНИЯ ВЫСОКОЧУВСТВИТЕЛЬНОГО К ЭЛЕКТРОННОМУ(54) METHOD FOR OBTAINING HIGH-SENSITIVE ELECTRONIC

Claims (2)

ВОЗБУЖДЕНИЮ КАТОДОХРОМНОГО СОДАЛИТА 12 эование гелей гидроокиси алюмини  и поликрем- l ниевой кислоты, в частности, получеюи 1Х гидролизом соответственно этилата алюмини  и кремнеэтилового эфира, способствует большей гомогенизации смеси исходных компонентов и позвол ет получить содалит с высокими катодохромными свойствами при прокаливании смеси всего лишь в одну стадию: . коэффиш1ент контрастности в отраженном свете 20-30:1. Процесс получени  целевого продукта по предлагаемому способу составл ет 1 -1,5 суток вместо 3-4 суток по известному способу. Пример 1. К 156 мл 3%-ного гел  гидроокиси алюмини  добавл ют приперемеижвании 24 мл 10%-ного раствора гидроокиси натри , 11.,7 мл 10%-ного раствора хлористого натри  и 72 мл 5%-ного гел  поликрем ниевой кислоты. Полученный алюмосиликатный гель сушат при 100°С до полного удалени  влаги, после чего прокаливают на воздухе при в течение 6 час. Получают мелкодисперсный порошок со слецуюшим гранулометрическим составом: 0-2 мк 10%, 2-4 мк 65%, 4-6 мк 20%, 6-12 мк 5%. При возбуждении полученного хлорсодалита элект ронным лучом с напр жением 18 кв и плотностью тока 5 ма/см коэффиш1ент контрастности его в отражен ном свете составл ет 20:1. Пример 2. К 103 мл 3%-нЬго гел  гидроокиси алюмини , полученного гидролизом этилата алюмини , добавл ют 21 мл 10%-ного раствора гидроокиси натри , 7,1 мл 15%-ного раствора бромистоводородной кислоты и 62 мл 5%-ного гел  поликремниевЪй кислоты , полученной гидролизом кремнеэтилового эфира. По з енный алюмосиликатный гель сушат до полного удалени  влаги, после чего прокаливают наь воздухе при в течение 4 час. Готовый продукт представл ет собой мелкодисперсный порошок следующего гранулометрического состава: 0-2 мл 10%, 2-4 мк 72%, 4-6 мк 15%, 6-12 мк 3%. 1 оэффициент контрастности полученного бромсодалита при возуждении его электронным лучом с напр жением 18 кв и плотностью тока 5 ма/см составл ет 30:1. Формула изобретени  1.Способ получени  высокочувствительного к электронному возбуждению катодохромного содалита , включаюший смешение в стехиометрическом соотношении гидроокиси натри  и соединений, содержащих алюминий, кремний и галоген, в присутствии жидкой фазы, сушку и последующую прокалку смеси , о т л и ч а ю щ и и с   тем, что, с целью упрощени  процесса получени  целевого продукта без снижени  его чувствительности к электронному возбуждению , в качестве соединений, содержащих алюминий и кремний, примен ют гели гидроокиси алюмини  и по.гшкремииевой кислоты, соответственно. EXCITING CATHODCHROME SODALITE 12 The appearance of aluminum hydroxide and polysilicic acid gels, in particular, obtained by 1X by hydrolysis of aluminum ethoxide and silica ethyl ether, respectively, contributes to a greater homogenization of the mixture of the starting components and allows obtaining sodalite with high cathodochrome properties during calcination of the mixture with only cathode chromium when calcining the mixture in only one stage: The contrast ratio in the reflected light is 20-30: 1. The process of obtaining the desired product by the proposed method is 1-1.5 days instead of 3-4 days by a known method. Example 1. To 156 ml of a 3% aluminum hydroxide gel, 24 ml of a 10% sodium hydroxide solution, 11., 7 ml of a 10% sodium chloride solution, and 72 ml of a 5% polysilicic acid gel are added by stirring. The resulting aluminosilicate gel is dried at 100 ° C until moisture is completely removed, and then calcined in air for 6 hours. A fine powder is obtained with the following particle size distribution: 0-2 microns 10%, 2-4 microns 65%, 4-6 microns 20%, 6-12 microns 5%. When the obtained chlorosodalite is excited by an electron beam with a voltage of 18 kV and a current density of 5 mA / cm, its contrast ratio in reflected light is 20: 1. Example 2. To 103 ml of a 3% aluminum hydroxide gel prepared by the hydrolysis of aluminum ethylate were added 21 ml of a 10% sodium hydroxide solution, 7.1 ml of a 15% hydrobromic acid solution and 62 ml of a 5% gel. polysilicic acid obtained by hydrolysis of silica ethyl ester. The dried aluminosilicate gel is dried until moisture is completely removed, and then calcined at air for 4 hours. The finished product is a fine powder of the following particle size distribution: 0-2 ml 10%, 2-4 microns 72%, 4-6 microns 15%, 6-12 microns 3%. 1, the contrast coefficient of the obtained bromodalite when excited by an electron beam with a voltage of 18 kV and a current density of 5 mA / cm is 30: 1. Claim 1. Method of obtaining highly sensitive to electronic excitation of cathode chromic sodalite, including mixing in a stoichiometric ratio of sodium hydroxide and compounds containing aluminum, silicon and halogen, in the presence of a liquid phase, drying and subsequent calcining of the mixture, melt and and in order to simplify the process of obtaining the desired product without reducing its sensitivity to electronic excitation, aluminum hydroxide gels are used as compounds containing aluminum and silicon. and pgrcrmicic acid, respectively. 2.Способ по п. 1,отличающийс  тем, что гели гидроокиси алюмини  и поликремниевой кис-, лоты получают соответственно гидролизом этилата, aлю alни  и кремнеэтилового эфира.2. A method according to claim 1, characterized in that the gels of aluminum hydroxide and polysilicic acid are prepared by the hydrolysis of ethylate, alni and silica ethyl ether, respectively.
SU2033126A 1974-06-11 1974-06-11 The method of obtaining highly sensitive to electronic excitation of cathode chromic sodalite SU512999A1 (en)

Priority Applications (1)

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SU2033126A SU512999A1 (en) 1974-06-11 1974-06-11 The method of obtaining highly sensitive to electronic excitation of cathode chromic sodalite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU2033126A SU512999A1 (en) 1974-06-11 1974-06-11 The method of obtaining highly sensitive to electronic excitation of cathode chromic sodalite

Publications (1)

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SU512999A1 true SU512999A1 (en) 1976-05-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5366834A (en) * 1989-11-15 1994-11-22 Nichia Kagaku Kogyo K.K. Method of manufacturing a cathode ray tube phosphor screen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5366834A (en) * 1989-11-15 1994-11-22 Nichia Kagaku Kogyo K.K. Method of manufacturing a cathode ray tube phosphor screen

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