Silikoni pawiri kwa nkhungu kupanga: specifications luso

Silikoni pawiri ndi nkhani yabwino kupanga amatha kuumba mafupawa Lifecasting ndi zinthu zina zovuta. Monga lalabala madzi, likupereka yosavuta, kusintha, mkulu sanakhulupirike mawonekedwe. Komanso lili ndi ubwino zina - wautali moyo ndi kukana mankhwala ndi kuwonongeka. Izi ndi zinthu akulimbikitsidwa kupanga njira yokhalitsa zitsanzo yovuta. Silikoni amatha kuumba kwa pulasitala mukhoza kupanga nthawi zosakwana lalabala nkhungu, ngati inu ntchito "mwamphamvu" catalysts. The drawback yekha ndiye kuti ndi okwera mtengo kusiyana lalabala, ndipo si choncho zotanuka, zikubweretsa anawononga ndiponso kuwonongeka.

Zikuchokera silikoni Zofunika

Nkhanizi tichipeza pakachitsulo phala monga m'munsi ndi pulatinamu chothandizira, amene Iyamba oipa.

Polenga mitundu ntchito silikoni pawiri bwino, wofiira, wachikasu, woyera ndi ena mitundu. The hardener Mwina mulinso phale osiyana kapena kukhala colorless.

Pambuyo kusakaniza zigawo zikuluzikulu ziwiri pa chipinda kutentha silikoni zikuchokera yolimba ndipo rubbery maonekedwe. Avereji akuchiritsa nthawi ambiri - pakati pa maola 18-24, koma nthawi kuumitsa akhoza yafupika pogwiritsa ntchito catalysts mkulu-ntchito.

Mitundu ya mankhwala silikoni

The mankhwala mphira ambiri kuti apange amatha kuumba - ichi RTV, RTV-2 ndi HTV. Mosiyana ndi mphira RTV (chipinda kutentha vulcanizing) silikoni HTV amafuna zinthu solidification kutentha choposa 100 ° C.

Mwa anthu amene kubala silikoni pawiri, aliyense akuyesera kuchita zambiri silicones ndi catalysts ndi kukhuthala osiyana, mtundu ndi zina.

Pali magulu awiri aakulu a RTV-silicones

1. Tin catalyzed silicones.

2. Silicones pa catalysts pulatinamu.

Aliyense ali ndi ubwino ndi kuipa. Tin-catalyzed silicones zambiri mtengo ndiponso yosavuta kugwiritsa ntchito. Ali ndi kukhuthala kwa otsika sing'anga, kotero otaya mankhwala kuzungulira bwino. Mosiyana, pulatinamu kuletsedwa mankhwala ambiri anapeza m'chilengedwe, sulfure, tini amines, poliyesitala kumene chopangidwa, epoxy kapena urethane mphira nkhani. Ngakhale pambuyo ❖ kuyanika Nkhani akiliriki lacquer silikoni pawiri kupanga pulatinamu-ikamauma pamaso pa sulfure ndi anachita ndi pamalo tinny. Izi zimapangitsa iwo zosafunika kwa zinthu zambiri zachilengedwe. Komabe, pambuyo kuumitsa, ali apamwamba mankhwala, microbiological ndi luso kutentha zosagwira, ndi zambiri kukhala kusintha kwa zaka zambiri. Mosiyana, malata-catalyzed silicones amakonda kukhala Chimaona patapita zaka zingapo ntchito ndi kuyamba unagawanika kapena kuichotsa. Pazifukwa izi, silicones malata gulu nthawi zambiri ankakonda kugwira otsika buku kuponyera. Ndipo pulatinamu ntchito ntchito yofunika, makamaka lalikulu zedi.

nthawi yosungirako

silicones zambiri zikhoza kugwiritsidwa ntchito kwa zaka 5 kuchokera tsiku kugula ngati kusungidwa bwino muli losindikizidwa mu ozizira, youma. Komabe catalysts kutaya mogwira mwamsanga, ngakhale pamene kusungidwa bwino, iwo yabwino ntchito mu chaka.

komwe ntchito

Silikoni RTV-2 pawiri ntchito yopanga Mabaibulo angapo mafano a. Iwenso uli mankhwala a poliyesitala, epoxy resins, phula, pulasitala, makandulo, zidole, sopo, etc.

Silikoni pawiri "Pentelast" ndi chakudya komanso otetezeka. Ubwino wa nkhaniyi ndi kuti kwambiri kusintha ndipo alibe kuwononga mankhwala pa kuchotsa, amatha kuumba ngati jombo angagwiritsidwe ntchito mobwerezabwereza. Popeza kuti chakudya amasankha silikoni ndi pulatinamu chothandizira, ndi kuti mukhoza amatha kuumba silikoni chifukwa amatha kuumba pulasitala kwa chofufumitsa ndi muffins, makeke ndi mankhwala ena Confectionery.

Safety Dziwani

The silikoni pawiri ndi wosavuta mankhwala odorless pamene ntchito molondola, kaya catalysts ndi thickeners kungakhale angaononge maso ndi khungu Komabe, mbali imeneyi ya thupi kutetezedwa.

Kayendesedwe polenga amatha kuumba

• Pamwamba anakopera chitsanzo kuchapidwa ndi degreased. Ngati ndi kotheka, ndi lubricant ntchito phula, yankho sopo kapena petrolatum.

• chuma bwinobwino osokonezeka, kuyambira precipitate akhoza kupangidwa pa yosungirako.

• Pre-okonzeka chidebe limene amachititsa anthu kuganiza. Choncho chidebe kungakhale chikho pulasitiki, botolo kapena bokosi. Ziyenera kukhala molunjika pansi ndi mbali popanda ming'alu ndi mabowo.

• Mu woyera chidebe kuchepetsedwa maziko ndi hardener mpaka misa homogeneous.

• Pofuna amati kuchuluka kwa silikoni chofunika, muyenera kuwerengera voliyumu anatsanulira, kotero kuti mankhwala akhala zophimbidwa. Njira ina - inu mungakhoze basi kuphimba pamwamba pa mankhwala, pamodzi ndi mabowo ndi mphako, pambuyo cha kuwuma kwa silikoni kuti lembani gawo lina, mu silikoni choncho ndi ndalama. Kuti uniformly kuphimba chitsanzo, ndi zofunika kutsanulira silikoni kapena ntchito magulu awiri kapena kuposa. Gulu lachiwiri ndi kuika pamwamba pa Unalimbitsa choyamba, komabe yomata. Mukhozanso ntchito gauze kapena zipangizo ikuthandizira kuti anapatsa pakati pa zigawo, chomwe chimathandiza kutulutsa mtundu olimba.

• catalysts anali osokonezeka mu kufanana malingana ndi mtundu wa silikoni. Ena mwa iwo ntchito m'munsi kwa chothandizira chiŵerengero cha 50:50. Chipwirikiti kungakhale umakaniko kapena pamanja ndi supuni kapena ndodo. Sangathe kuchita yaitali ndondomeko iyi si yochulukirapo 2, mpaka pamene ndondomeko limapanga kwambiri thovu mpweya osakaniza. Pofuna kudziwa ngati kugwirizana yunifolomu zinachititsa, bwino kutenga mtundu hardener.

• Pambuyo oyambitsa osakaniza udzathiridwa mwamsanga. Mabukuwa akuchiritsa ku mkhalidwe rubbery pasanathe maola 24. Pa kutentha m'munsimu +23 ° C kolowera nthawi yaitali.

Kodi muyenera kuganizira

Air thovu akhoza kusanduka kanthu, ngati poyambitsa Kusakaniza yaing'ono gawo zosakaniza ndi ntchito burashi, chitsanzo kubisa. Choncho, Kulipira zimatheka thovu komanso zikumveka wa mawonekedwe ndondomeko. Pambuyo depositing wosanjikiza woonda mankhwala kusiya pa mpumulo firiji mpaka, mpaka osakaniza ndi ufulu mpweya ndipo musaumitse. Ndiye kusakaniza gawo otsalira a hardener ndi tsinde ndi waikamo mu zigawo pa zinthu za mawonekedwe yotsirizidwa. M'mikhalidwe choyezera, ndondomeko imeneyi mosavuta, monga anachita mothandizidwa ndi makina kuti sansani nkhungu anatsanulira ndi kumasula mpweya. Zinthu mobisa zingakhoze kugwedezeka, kudzikonda pogogoda pamwamba.

Ngati chitsanzo alibe malire zachilengedwe kupewa kufalitsa silikoni pa kuthira, izo zidzakhala zofunikira kumanga ndi kusunga khoma kuzungulira chitsanzo. Izi zikhoza kuchitika pogwiritsa ntchito nkhani iliyonse inert monga matabwa matabwa, matabwa, zikatoni, etc. Alimbikitse ndi asindikize akhoza khoma mwa zomatira tepi kuti silikoni si kutayikira kudzera kudula lapansi.

Chenjezo! Mitundu ina ya silikoni akhoza pang'ono discolored, mitundu ina ya miyala imene munthu nkhungu wapangidwa. Patsogolo ntchitoyi akufuna kuti ayese ndi kuyetsa chitsanzo negligible patsogolo ntchito chuma zinthu zamtengo wapatali.