Zosindikizira za silicone zakhala chisankho choyamba cha akatswiri ndi ma DIYers mofanana pankhani yosindikiza malo osiyanasiyana.Zosindikizira za silicone zili ndi zomatira zabwino kwambiri komanso kusinthasintha, zomwe zimapereka kukhazikika kwanthawi yayitali pazogwiritsa ntchito zosiyanasiyana.Mwa mitundu ya ma silicone sealants omwe amagulitsidwa pamsika, alkoxy silicone sealants ndi acetoxy silicone sealants ndi mitundu iwiri yotchuka.Munkhaniyi, tiwona mozama za zosindikizira izi, zabwino ndi zoyipa zake, ndikuthandizani kudziwa njira yabwino kwambiri pazosowa zanu zenizeni.
1. Kusiyana kwamapangidwe:
Choyamba, tiyeni tiwone kusiyana kwapangidwe pakati pa alkoxy ndi acetoxy.Gulu la alkoxy limapangidwa ndi gulu la alkyl (R-) lolumikizidwa ku atomu ya okosijeni (-O-).Kwenikweni, ndi kuphatikiza kwa gulu la alkyl ndi okosijeni.
Mbali inanso, acetoxy imachokera ku asidi acid.Zimaphatikizapo gulu la acetyl (CH3CO-) lomangika ku atomu ya okosijeni (-O-).Chifukwa chake, acetoxy imatha kuonedwa ngati gulu la alkyl losinthidwa ndi okosijeni mkati mwa acetyl moiety.
Kusiyana kwa mapangidwe kumabweretsa kusiyana kwa mankhwala ndi reactivity pakati pa alkoxy ndi acetoxy magulu.Monga gulu logwira ntchito la aliphatic, alkoxy amasonyeza khalidwe la nucleophilic ndipo nthawi zina amakhala ngati gulu lochoka.Khalidweli limadalira kwambiri momwe gulu la alkyl limamangiriridwa ku atomu ya okosijeni.Popeza magulu a alkoxy sagwira ntchito, electrophile yamphamvu kapena chothandizira chimafunika kuti ayambe kuchitapo kanthu.
Mosiyana ndi izi, magulu a acetoxy amawonetsa reactivity yosiyana chifukwa cha kukhalapo kwa magulu a acetyl.The acetyl moiety ndi pang'ono mpweya wabwino amathandiza kuti electrophilic chikhalidwe cha acetoxy gulu.Chifukwa chake, gulu la acetoxy limatenga nawo gawo pakuchita kwa acetylation, kusamutsa gawo la acetyl kupita ku mamolekyu ena.Mawonekedwe a acetylation amapezeka ponseponse pakaphatikizidwe ka mankhwala, zinthu zachilengedwe ndi mitundu yosiyanasiyana ya organic.
2. Alkoxy silicone sealants: Kutulutsa zotheka zatsopano
Alkoxy silicone sealants ndi zosindikizira zopangidwa mwapadera kutengera ukadaulo wochiritsa alkoxy.Zosindikizirazi zimadziwika chifukwa cholumikizana bwino kwambiri ndi magawo osiyanasiyana, kuphatikiza magalasi, zoumba, ndi mapulasitiki ena.Kukhoza kwawo kupirirakutentha kwambirindikukana kuwala kwa UVamawapanga kukhala kusankha koyamba kwa ntchito zakunja.Kuphatikiza apo, ma alkoxylated silicone sealants ndi abwino kwambirikukana nyengo, kutsimikizira zotsatira zokhalitsa.Chifukwa cha iwolow modulandi kusinthasintha kwakukulu, amatha kugwirizanitsa mayendedwe olowa, kuwapanga kukhala abwino kwa ntchito zosinthika.Ubwino waukulu wa alkoxylated silicone sealants ndi awofungo lochepapa kuchiritsa, zomwe zimapangitsa kuti zikhale zosavuta kugwiritsa ntchito m'malo otsekedwa.
3.Acetoxy Silicone Sealants: Kuyesedwa ndi Kuyesedwa
Acetoxy silicone sealants, kumbali ina, amadalira ukadaulo wochiritsa acetoxy.Zosindikizira izi zakhala zikugwiritsidwa ntchito kwambiri kwa zaka zambiri ndipo zimadziwika chifukwa cha kusindikiza kwawo kosiyanasiyana.Amapanga zomangira zolimba ndi zida zomangira zofala, kuphatikiza magalasi, zitsulo ndi zitsulo.Acetoxy silicone sealants amadziwika ndikuchiritsa mwachangundi zabwino kwambirikukana chinyezi.Kuchiritsa mwachangu kumeneku kumapangitsa kuti mapulojekiti akhale ofulumira komanso osavuta.Dziwani, komabe, kuti zosindikizira za acetoxy silicone zimatha kutulutsa fungo la vinyo wosasa pamene akuchiritsa, kotero kuti mpweya wokwanira ndi wofunikira.
4.Sankhani silicone sealant yoyenera
Kumvetsetsa mawonekedwe apadera amtundu uliwonse wa silicone sealant ndikofunikira kuti mupange chisankho mwanzeru.Zinthu monga kulimba kwa chomangira, kuthekera kolumikizana, nthawi yochiza, kusinthasintha, fungo ndi zofunikira za polojekiti zonse ziyenera kuganiziridwa.Kumene kukana kuwala kwa UV, kutentha kwambiri komanso nyengo yakunja ndikofunikira, ma alkoxylated silicone sealants nthawi zambiri amakonda.Acetoxy silicone sealants ali ndi katundu wochiritsa mwachangu ndipo ndi chisankho chabwino kwambiri pama projekiti omwe amafunikira nthawi yosinthira mwachangu komanso chomangira cholimba choyambirira.Komanso, ndikofunikira kudziwa kuti mitundu yonse ya zosindikizira zimapezeka mumitundu yosiyanasiyana, zomwe zimapereka zosankha zokongoletsa pamapulogalamu omwe amafunikira kumaliza kowoneka bwino.
Mapeto
Pamodzi, alkoxy ndi acetoxy silicone sealants amapereka phindu lapadera kutengera zofunikira za polojekiti.Chisankho chomaliza chimadalira zomatira, nthawi yochiza, kusinthasintha, fungo ndi zinthu zachilengedwe.Poganizira zomwe zafotokozedwa m'nkhaniyi, mutha kusankha molimba mtima chosindikizira cha silicone chomwe chikugwirizana ndi zosowa zanu.
Nthawi yotumiza: Jul-26-2023