Chifukwa Chani Gwiritsani Silicone Mphira?
Wolemba Nick P pa February 21, '18
Mabotolo a silicone ndimapangidwe a labala okhala ndi zinthu zonse zachilengedwe, komanso silika wonyezimira kwambiri monga zigawo zikuluzikulu ziwiri. Ali ndi mawonekedwe ambiri omwe kulibe mankhwala ena obowoleza ndipo ali ndi maudindo ofunikira m'mafakitale ambiri, monga zamagetsi, zamagetsi, magalimoto, chakudya, zamankhwala, zida zapanyumba ndi zopumira. Silicone mphira ndiyosiyana kwambiri ndi mphira wamba chifukwa mamolekyulu omwe amapangidwa ndi ma polima amakhala ndi maunyolo atali a maatomu a silicone ndi oxygen. Polima iyi imakhala ndi chilengedwe komanso chamoyo. Gawo lachilengedwe limapangitsa kuti polima isagwirizane kwambiri ndi kutentha kwambiri ndipo imapatsa mphamvu zamagetsi zotetezera komanso kusowa kwa mankhwala, pomwe zinthu zomwe zimapangitsa kuti zikhale zosinthika kwambiri.
Makhalidwe
Kutentha fundo:
Silicone rubbers amakhala otentha kwambiri poyerekeza ndi rubbers wabwinobwino. Palibe pafupifupi kusintha kwa katundu ku 150oC motero amatha kugwiritsidwa ntchito mpaka kalekale. Chifukwa cha kutentha kwawo kosagwiritsidwa ntchito bwino amagwiritsidwa ntchito ngati zinthu za mphira zomwe zimagwiritsidwa ntchito kutentha kwambiri.
Kuzizira Kwazizira:
Mabotolo a Silicone ndi ozizira kwambiri. Chimbudzi cha rubbers wabwinobwino ndi pafupifupi -20oC mpaka -30oC. Chimbudzi cha ma silicone rubbers ndichotsika -60oC mpaka -70oC.
Kutsutsa Kwanyengo:
Mabotolo a Silicone ali ndi nyengo yabwino kwambiri. Pansi pa mpweya wa ozoni womwe umapangidwa chifukwa chotuluka m'mlengalenga, zinyalala zachilengedwe zimawonongeka kwambiri koma zopukutira za silicone zimakhalabe zosakhudzidwa. Ngakhale atakhala kuti ali ndi ma ultraviolet komanso nyengo yakanthawi yayitali, malo awo sanasinthe.
Zamagetsi Zamagetsi:
Mabotolo a silicone ali ndi zida zabwino kwambiri zotetezera magetsi ndipo amakhala osasunthika pafupipafupi komanso kutentha. Palibe kuwonongeka kwakukulu pamakhalidwe komwe kumawonedwa pomwe ma rubbers a silicone amizidwa m'madzi. Chifukwa chake ndiabwino kugwiritsidwa ntchito ngati ma insulators amagetsi. Makamaka ma rubbers a silicone amalimbana kwambiri ndi kutulutsa kwa corona kapena magetsi pamagetsi ake apamwamba kwambiri chifukwa chake amagwiritsidwa ntchito ngati zotetezera zida zamagetsi okwera kwambiri.
Kuchita kwamagetsi:
Magetsi opangira ma silicone opangira magetsi ndi omwe amapanga mphira wokhala ndi zida zamagetsi zamagetsi monga kaboni zomwe zimaphatikizidwa. Zinthu zosiyanasiyana zamagetsi zamagetsi kuyambira ma ohms-cm ochepa mpaka e + 3 ohms-cm zilipo. Kuphatikiza apo, zinthu zina ndizofanana ndi zomwe zimapangidwa ndi ma silicone wamba. Chifukwa chake chimagwiritsidwa ntchito ngati malo olumikizirana ndi ma kiyibodi, mozungulira zotenthetsera komanso ngati zida zosindikizira zida zotsutsana ndi malo amodzi ndi zingwe zamagetsi. Mwambiri, zida zamagetsi zamagetsi zamagetsi zomwe zimapezeka pamsika makamaka zomwe zimakhala ndi mphamvu zamagetsi zamagetsi kuyambira 1 mpaka e + 3 ohms-cm.
Kutopa Kukaniza:
Mwambiri rubbers wa silicone siopambana kuposa rubbers wabwinobwino potengera mphamvu pakupsinjika kwakukulu monga kukana kutopa. Komabe, kuti athane ndi vutoli, ma rubbers omwe amakhala bwino nthawi 8 kapena 20 pakulimbana ndi kutopa akupangidwa. Zogulitsazi zimagwiritsidwa ntchito m'njira zambiri monga ma kiyibodi amakina ogwiritsa pamaofesi ndi magawo a mphira a magalimoto onyamula.
Kukaniza Ma radiation:
Ma rubbers abwinobwino a silicone (dimenthyl silicone rubbers) samawonetsa kukana kwabwino kwa cheza cha radioactive makamaka poyerekeza ndi ma rubbers ena. Komabe methyl phenyl silicone rubbers, ndi phenyl radical yomwe imaphatikizidwa mu polima, imatha kulimbana ndi cheza cha radiation. Amagwiritsidwa ntchito ngati zingwe ndi zolumikizira m'malo opangira magetsi a nyukiliya.
Kukaniza Mpweya wotentha:
Mabotolo a silicone amakhala ndi mayamwidwe ochepa amadzi pafupifupi 1% ngakhale atamizidwa m'madzi kwa nthawi yayitali. Mphamvu zamagetsi zamagetsi komanso magetsi sizimakhudzidwa. Nthawi zambiri ma rubbers a silicone samawonongeka mukamakhudzana ndi nthunzi, zomwe zimakhudzidwa zimakhala zofunikira pakapanikizika kwa nthunzi. Polima ya Siloxane imaphwanyidwa ndi nthunzi yothamanga kwambiri pamwamba pa 150oC. Chodabwitsachi chikhoza kukonzedweratu ndi kupanga kwa mphira wa silicone, kusankha kwa othandizira ndi kuchiritsa positi.
Kuchita kwamagetsi:
Magetsi opangira ma silicone opangira magetsi ndi omwe amapanga mphira wokhala ndi zida zamagetsi zamagetsi monga kaboni zomwe zimaphatikizidwa. Zinthu zosiyanasiyana zamagetsi zamagetsi kuyambira ma ohms-cm ochepa mpaka e + 3 ohms-cm zilipo. Kuphatikiza apo, zinthu zina ndizofanana ndi zomwe zimapangidwa ndi ma silicone wamba. Chifukwa chake chimagwiritsidwa ntchito ngati malo olumikizirana ndi ma kiyibodi, mozungulira zotenthetsera komanso ngati zida zosindikizira zida zotsutsana ndi malo amodzi ndi zingwe zamagetsi. Mwambiri, zida zamagetsi zamagetsi zamagetsi zomwe zimapezeka pamsika makamaka zomwe zimakhala ndi mphamvu zamagetsi zamagetsi kuyambira 1 mpaka e + 3 ohms-cm.
Psinjika Anatipatsa:
Ma rubbers a silicone akagwiritsidwa ntchito ngati zida za mphira pakunyamula zomwe zimapangika pakapangidwe kake pakatenthedwe, kuthekera koti kuchira ndikofunikira kwambiri. Mitundu yama compression ya ma silicone imayikidwa pamatenthedwe osiyanasiyana kuchokera -60oC mpaka 250oC. Nthawi zambiri ma rubbers a silicone amafunika kuchiritsidwa positi. Makamaka pankhani yazopanga zotsika kwambiri. Chithandizo cha positi chimafunidwa ndipo kusankha kwama optimum vulcanizing agents ndikofunikira.
Matenthedwe madutsidwe:
Kutentha kwa mphira wa silicone kuli pafupifupi 0,5 e + 3 cal.cm.sec. C. Mtengo uwu umawonetsa bwino matenthedwe otentha a rubbers a silicone, chifukwa chake amagwiritsidwa ntchito ngati zokutira zotenthetsera komanso zotchinga zotenthetsera.
Mkulu kwamakokedwe ndi Misozi Mphamvu:
Mwambiri mphamvu yong'ambika kwa rubbers wa silicone ili pafupi 15kgf / cm. Komabe, zopangira zolimba kwambiri komanso zopukutira (30kgf / cm mpaka 50kgf / cm) zimapezekanso mwa kukonzanso polima komanso kusankha ma filler ndi othandizira olumikizana. Zogulitsazi zimagwiritsidwa ntchito bwino popanga zoumba zovuta, zomwe zimafunikira mphamvu yayikulu ya misozi, ming'alu yopangidwa ndi ma taper osinthika ndi mapangidwe akulu.
Kusapangika:
Zipilala za silicone sizimayaka mosavuta ngakhale zitakokedwa pafupi ndi lawi. Komabe akagwidwa moto, amayaka mosalekeza. Ndikuphatikizira kwa mphindi yaying'ono yamoto, zida za silicone zitha kukhala zosazima komanso zotha kuzimitsa.
Izi sizimatulutsa utsi kapena mpweya wa poizoni zikawotcha, chifukwa sizikhala ndi mankhwala amtundu wa halogen omwe amapezeka m'matope. Chifukwa chake amagwiritsidwa ntchito pazinthu zamagetsi zamagetsi ndi makina amuofesi komanso zida zatsekedwa mu ndege, mayendedwe apansi panthaka komanso nyumba zamkati. Amakhala zinthu zofunika kwambiri pachitetezo.
Kukwaniritsa Gasi:
Zingwe za ma silicone rubbers zimakhala ndi kuthekera kwabwino kwa mpweya ndi nthunzi yamadzi komanso kusankha bwino poyerekeza ndi mphira wamtundu.
Kukhazikika Kwachilengedwe:
Zilonda za silicone nthawi zambiri zimakhala zolimbitsa thupi. Amakhalanso ndi zinthu zokhala ndi chidwi monga sizimayambitsa magazi kugundana mosavuta. Chifukwa chake akugwiritsidwa ntchito ngati ma catheters, ulusi wopanda pake ndi mapapo a mtima, katemera, zoyimitsira labala zamankhwala ndi magalasi a matenda akupanga.
Kuwonetsera ndi Kujambula:
Zobwezeretsa zachilengedwe zonse zimakhala zakuda chifukwa chophatikizidwa ndi kaboni. Ponena za rubbers wa silicone, ndizotheka kupanga rubbers wowonekera bwino pophatikizira silika wabwino yemwe samawononga kuwonekera koyambirira kwa silicone.
Chifukwa chowonekera bwino kwambiri, utoto ndi mitundu yosavuta. Chifukwa chake zinthu zokongola ndizotheka.
Zosakanikirana Zosasokoneza:
Mabotolo a silicone alibe mankhwala ndipo amakhala ndi nkhungu yabwino kwambiri yotulutsa katundu. Mwakutero sawononga zinthu zina. Chifukwa cha malowa, amagwiritsidwa ntchito ngati makina osindikizira, makina osindikiza, mapepala ndi zina zambiri.
Zomwe zatchulidwazi zikukhulupiliridwa kuti ndizolondola koma sizikutanthauza kuti ndizophatikiza zonse. Momwe magwiridwe antchito amakhudzira kagwiritsidwe ntchito ka chinthu chilichonse, zomwe zili patsamba lino zitha kuwonedwa ngati chitsogozo. Ndiudindo wokhawo wa kasitomala kuwunika zomwe angafune, makamaka ngati katundu wazinthu zathu ndi okwanira kuti agwiritse ntchito.
Post nthawi: Nov-05-2019