• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A drive shaft seal prepared from organopolysiloxane gum, a reinforcing silica filler, diatomaceous earth, organohydrogenpolysiloxane, and organic peroxide has improved oil leakage and noise reduction properties.
    公开号:SU978734A3
    申请号:SU802980757
    申请日:1980-09-12
    公开日:1982-11-30
    发明作者:Сумимура Син-Ити；Миякоси Сигео
    申请人:Торэй Силикон Компани,Лтд (Фирма)；
    IPC主号:
    专利说明:

    where P 14-16, or (2) in the following ratio of components, {May. h): Siloxane rubber 100 Silicon dioxide 35-50 Diatomaceous earth 20-60 Organic peroxide 0.5-0.6 Polymethylhydrile xyloxane, 5-2.5 As a high molecular weight siloxane rubber, the composition contains polydimethylmethylvinylsiloxane rubber and has been used as a template for the siloxane rubber and has been used as a part of the product or has been used to create a siloxane alkylate in a patterned polydimethylmethylvinylsiloxane rubber or polydimethylmethylyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicyllyllyl silicomer in the ally, Idolite, Idolite, Idolite as an organic peroxide, 2,5-bis tert-butyl paraxy-2, 5-dimethylhexane, 2,4-dichlorobenzoyl peroxide, and also may contain benzoyl peroxide, tert-butyl perbenoate, dicumyl peroxide, monochloroxyisoyl peroxide. The reinforcing filler — silicon dioxide represents white carbon black, precipitated silicon dioxide, or a dehydrated form of this silicon dioxide. In addition, the composition may contain targeted additives such as diphenylsilanediol, diphenylmethylsilanol, dihydroxyopigodimethylsiloxane, polytetra fluoroethylene in the form of a powder, graphite, magnesia, zinc oxide, powdered mica, thermos and thermolysis additives. Example 1. In the mixer load 10 O. ma.ch. polydimethylmethyl vinyl siloxane rubber containing 0.16 mol% methylvinylsiloxane groups (molecular weight 25900 O), 35 May, including precipitated silica with a specific surface area of 24O, 6O May, including diatomaceous earth and 3 ma.h. diphenylsilanediol, mix thoroughly for 2 hours with the temperature rising from room temperature to 170 ° C. After cooling the mixture to a temperature not higher than 60 ° C, 10 wt.h. chalky c in the dispersed powdery mica, in methylmethylsiloxac of formula (1) (mol mass 22OO) in the amount indicated in Table. 1, and 0.5 wt.h. paste containing 50 wt.% silicone oil and 50 wt.% 2,5-bis (tert-butylperoxy) -2,5-dimethyl hexane. The resulting composition is homogenized by stirring in a two-roll mixer and cured in a press for 2 minutes and then in a thermostat at 200 s for 4 hours. Physico-mechanical characteristics of the vulcanized samples (hardness, tensile strength, elongation at stretching) determined by conventional procedures. The production noise level is determined as follows. A sample cured in a mold for oil seals is placed in a test device (tester). In the tester, the shaft rotates at a speed of 3000 rpm, 5 observers slowly move away from the tester in order to determine the distance over which no noise is heard due to friction when the shaft rotates. Under the same conditions, to assess the sealing ability, the volume of oil leaks after continuous rotation of the shaft for 24 hours is determined. The oil resistance of vulcanizates is determined by changing the volume of the samples after they have been heated for 70 hours at 150s in engine oil 10W-30 and in a mable 5 No. 3 (kinematic viscosity 31.96-34.18 cSt at 37, aniline number 69.5 1, flash point 1 62.7 C), Table. 1 shows the composition of the composition, properties and properties of vulcanizates (example 1). Example 2. In the mixer load 100 MAH. polydimethylmethylvinylmethylphenylsiloxane rubber containing 0.2 mol.% methylvinylsiloxane groups and 4.8 mol.% methylphenylsiloxane groups (mol. weight 210000), 50 May. including white soot with a specific surface of 2OO m / g, 10 ma.h. dihydroxyoligodimethylsiloxane (mol. mass, 890), 0.5 May. v. vinyltriethoxysilane and 0.5 ma.h. polytetrafluoroethylene powder, carefully moved for 2 h at. After cooling, OO may be added to the mixture, including diatomaceous earth, 0.5 wt.h, iron oxide, methyl hydride cyclotetrasiloxane of formula 2 in the amount indicated in Table. 2, and 0.6 wt.h. peroxide 2., 4-dichlorobenzosch1a. The mixture obtained is homogenized in a roller mixer and vulcanized for 10 minutes at 12 ° C in a press and then in a thermostat at 250 ° C for 4 hours. The properties of the vulcanizates are determined according to the procedures outlined above. Table 2 shows the composition of the compositions and the properties of the vulcanizates (Example 2). Thus, the composition for compaction of rotating shafts containing polymethylhydride-siloxane in its composition, allows to obtain seals with high indicators of oil resistance, wear resistance, ensuring a low level of industrial noise.
    /Table 1
    权利要求:
    Claims (1)
    [1]
    Composition for sealing rotating shafts based on high molecular weight 35 siloxane rubber, silicon dioxide, diatomaceous earth and organic peroxide, characterized in
    SN 3 (NNe), yn 5 that, in order to increase the abrasion and oil resistance and reduce the noise level during operation of seals made from vulcanizates based on this composition, it additionally contains polymethylhydridesiloxane of the formula
    N ~ ·.
    (о - ^ -) п-о-й <! Нз) э
    Sn e where P -14-16 il [HCH $ S {Q14 in the following ratio of components, parts by weight:
    Siloxane rubber Silicon dioxide Diatomaceous earth
    I AM
    one hundred
    35-50
    20-60
    Organic Peroxide 0.5-0.6
    Polymethylhydridesiloxane 0.5-2.0
    类似技术:
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    同族专利:
    公开号 | 公开日
    BR8005897A|1981-03-31|
    CA1162687A|1984-02-21|
    DE3034232C2|1991-04-18|
    JPS5643351A|1981-04-22|
    BE885210A|1981-03-12|
    GB2060667A|1981-05-07|
    FR2464976A1|1981-03-20|
    FR2464976B1|1983-08-05|
    JPS623182B2|1987-01-23|
    AU6237080A|1981-03-19|
    IT8024633D0|1980-09-12|
    AU535241B2|1984-03-08|
    DE3034232A1|1981-04-02|
    GB2060667B|1983-10-19|
    IT1141044B|1986-10-01|
    SE8006416L|1981-04-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3865778A|1974-02-07|1975-02-11|Gen Electric|Heat vulcanizable silicone rubber compositions resistant to oil degradation|
    JPS5952671B2|1976-09-27|1984-12-20|Toray Silicone Co|
    JPS5443019B2|1977-01-13|1979-12-18|
    JPS6039094B2|1977-09-26|1985-09-04|Toshiba Silicone|US4569980A|1982-06-15|1986-02-11|Toray Silicone Company, Limited|Releasable film forming compositions|
    DE3243194A1|1982-11-23|1984-05-24|Degussa Ag, 6000 Frankfurt|METHOD FOR PRODUCING SILICONE RUBBER VOLCANISATES|
    FR2557121B1|1983-12-21|1986-10-10|Rhone Poulenc Spec Chim|HOT VULCANIZABLE ORGANOPOLYSILOXANIC ELASTOMERIC COMPOSITIONS WITH IMPROVED PHYSICAL CHARACTERISTICS|
    US4774281A|1987-09-04|1988-09-27|Dow Corning Corporation|Low compression set silicone rubber|
    US5380770A|1992-04-09|1995-01-10|General Electric Company|Heat cured silicone rubber compositions containing a potassium aluminosilicate filler which provides resistance to hydrocarbon oils and adjustable shrinkage|
    KR20010069668A|2001-04-26|2001-07-25|이명수|a composition seal for rotation|
    JP4520159B2|2004-01-07|2010-08-04|信越化学工業株式会社|Silicone rubber composition|
    US20100225067A1|2009-03-06|2010-09-09|Gm Global Technology Operations, Inc.|Coated ring seal|
    WO2018092490A1|2016-11-17|2018-05-24|信越化学工業株式会社|Addition-curable liquid silicone rubber composition for automobile oil filter sealing member, and automobile oil filter sealing member|
    RU2720195C2|2018-08-09|2020-04-27|Общество с ограниченной ответственностью "Изотроп"|Heat-conducting compound|
    RU2720194C2|2018-08-09|2020-04-27|Общество с ограниченной ответственностью "Изотроп"|Composite heat-conducting material|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP54118407A|JPS623182B2|1979-09-14|1979-09-14|
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