SU972615A1

SU972615A1 - Heat-resistant base cement

Info

Publication number: SU972615A1
Application number: SU813304227A
Authority: SU
Inventors: Галина Сергеевна Царькова; Зинаида Петровна Рожкина; Эвелина Дмитриевна Патуткина; Татьяна Васильевна Тараскина
Priority date: 1981-06-19
Filing date: 1981-06-19
Publication date: 1982-11-07

Description

Таблица 1Table 1

Мастика готовитс следующим образом . К кремнийорганическому лаку в зкостью 40-50 с по вискозиметру ВЗ-4 добавл ютс при перемешивании окись лантана и мраморный порошок в несколько приемов дл лучшего перемешивани , полученна смесь выдерживаетс при комнатной температуре в течение не менее 12ч дл обеспечени смачивани частиц мраморного порошка лаком. Затем добавл етс стабилиза .тор МФСН-В, и смесь перемешиваетс 1до получени однородной массы.Mastic is prepared as follows. To the silicone varnish with a viscosity of 40–50 s, VZ-4 viscometer is added with stirring lanthanum oxide and marble powder in several steps for better mixing, the resulting mixture is kept at room temperature for at least 12 hours to ensure that the marble powder is wetted with lacquer. Then stabilization of the MFSN-B is added, and the mixture is stirred 1 until a homogeneous mass is obtained.

Известна Known

Предлагаемг1Я без добавкиWe offer no additive

5,45.4

41,3 41.3

О 20,3 ОO 20.3 o

37,337.3

Предлагаема мастика имеет жизнеспособности 36-40 ч при условии хранени в герметичной таре, Мастима отвердевает при 250-400°С в тече Лив 4-20 мин.The proposed mastic has a viability of 36-40 hours under the condition of storage in an airtight container; Mastima hardens at 250-400 ° C during Liv 4-20 minutes.

Claims

The adhesion of the proposed mastic in comparison with the known increases by 10 times, which will ensure the required strength of the fixture base to the lamp bulb with an increase in its service life. . . Invention Formula

Heat-resistant socle-based mastic, including silicone

table 2

We offer with the addition -,

1 2 3

45.6

54.5

47.5

26.8 26.6 22.6

38.0 38.8 36.7

varnish, hardener and filler, which, in order to increase lamp life by increasing its adhesive properties, it additionally contains lanthanum oxide, and polyorganosilosan stabilizer — a solution of polymethylazoboroxyl resin in toluene — components are taken in the following ratio, wt,%:

Organosilicon

16.3-19.96 lacquer The ratio of lacquer and filler is determined by technological factors: the requirement to obtain mastic of a certain consistency, the amount of hardener is chosen based on the minimum curing time of the composition. The addition of lanthanum oxide is in the range of 0.01-0.05%. Below the minimum amount, the effect of the additive does not appear. An increase in excess of 0.05 is impractical, since the adhesive characteristics remain practically unchanged. Qualitative indicators of mastics are given in table 2. Polyorganosilosan stabilizer 2,2-4,32 Lanthanum oxide 0,01-0,05 Filler (marble-shock) 76,53-78,63 Sources of information taken into account during the examination 1. OST societal mastic 16,0.686.492 -77.

2. Mastic OST 16.0.686.492-77.