Zofewa za silicon zimatha kupatsa nsalu zofewa, zosalala, zodzaza ndi zotanuka, komanso zotsutsana ndi makwinya, zosavala, zosagwira madzi komanso kusoka zinthu zabwino, zomwe zimasintha kwambiri mtengo wowonjezera wa mankhwala ndipo motero amakondedwa ndi makasitomala; Komabe, zolakwika monga mawanga amafuta a silicone nthawi zambiri zimachitika pakumalizidwa kofewa, zomwe zingayambitse vuto lalikulu pakupaka utoto ndi kumaliza.

 

①Makhalidwe a SiliconeWofewetsa

Mikhalidwe yoyenera yogwirira ntchito ndi mawonekedwe a physicochemical a zofewa za silicone zitha kufotokozedwa mwachidule mu mfundo zitatu izi:

 

1. Mtengo wa pH wa kusamba kwa ntchito ndi wosasunthika pakati pa 5 ndi 6.5;

2. Kutentha koyenera kwambiri kwa malo osambira a ntchito ndi 30-45 ℃;

3.Ionic, mitundu yambiri ndi cationic, yotsatiridwa ndi yopanda ionic; Pali mitundu ingapo yomwe imakhala ya anionic (poyerekeza ndi kufewa kwa mitundu yosiyanasiyana, mitundu ya cationic imakonda kulamulira).

 

②Magawo achitukuko ndi mawonekedwe aSiliconezofewa

Magawo akukula kwa zofewa za silicone zitha kugawidwa m'mibadwo inayi.

M'badwo woyamba: dimethyl silikoni mafuta ndi hydroxyl kusinthidwa silikoni mafuta. Makhalidwe: otsika mtengo, osasamba, osavuta kuswa emulsion.

M'badwo wachiwiri: Epoxy kusinthidwa silikoni zofewa, amino kusinthidwa silikoni zofewetsa Makhalidwe: Non hydrophilic, zosavuta kuswa emulsion, epoxy kusinthidwa imayang'ana pa youma, amino kusinthidwa imayang'ana pa kusalala, amino kusinthidwa silikoni mafuta ali ndi mavuto chikasu.

M'badwo wachitatu: Polyether kusinthidwa silikoni zofewetsa. Makhalidwe: Hydrophilicity yabwino, osati yosavuta kuswa emulsion, koma kusamva bwino kwa manja

M'badwo wachinayi: Linear block copolymer zosinthidwa organic silikoni zofewetsa mawonekedwe: zabwino hydrophilicity, wofewa dzanja kumva, otsika chikasu, ndi zovuta kuswa emulsion

 

③Mavuto wamba ndi mayankho pakugwiritsa ntchito

 

Ⅰ,Mphamvu ya pH pamafuta a silicone

Kukhazikika kwa zofewa kumakhudzidwa ndi pH mtengo. Nthawi zambiri utoto ndi kumaliza, nsalu za thonje zimayenera kuthandizidwa kale, zomwe nthawi zambiri zimaphatikizapo kugwiritsa ntchito zinthu za alkali kapena zamchere kuti zichotse zonyansa pansalu. Nsalu zina zimafunikanso kumalizidwa ndi silika, ndipo alkali yomwe imagwiritsidwa ntchito popanga izi ndizovuta kuyeretsa mkati mwa ulusi. Alkali imagwiritsidwanso ntchito popaka utoto ndi utoto wokhazikika kapena wa vat, kotero kuti nsaluyo imatha kukhala yamchere pomaliza.

Mafuta a silikoni wamba nthawi zambiri sagonjetsedwa ndi alkali ndipo amatha kusweka pansi pamikhalidwe yamchere. Patapita nthawi pa kumizidwa kugubuduza ndi kufewetsa processing, izo n'kudziphatika kwa odzigudubuza, chifukwa silikoni mafuta mawanga.

 

★ Yankho

 

Pamaso processing yofewa, nsalu pamwamba ayenera kutsukidwa ndi alkali wothandizira.

2.Onjezani acetic acid kumadzi ogwirira ntchito ndikusunga pH ya poyambira 5-6.

 

Ⅱ, Chikoka cha zokhazikika locomotive liwiro zinthu

 

Popanga nsalu zowonda kwambiri monga chiffon, silika wotsanzira, ndi ulusi wa bari, kuthamanga kwa makina opangira utoto kumathamanga kwambiri, nthawi zina kumafika mamita 60-80 pamphindi. Komabe, chifukwa cha otsika madzi zili nsalu woonda, permeability osauka wa nsalu palokha, ndi osauka hydrophilicity silikoni mafuta, wamba silikoni mafuta ali osauka kukameta ubweya kukana, ndi silikoni mafuta madzi obweretsedwa ndi nsalu adzayenderera mmbuyo pa mphero akugubuduza, amene mosavuta chifukwa chodzigudubuza kumamatira.

 

★ Yankho

 

1. Yesetsani kuwongolera liwiro lagalimoto momwe mungathere.

2. Kupititsa patsogolo kutsekemera kwa nsalu pamwamba.

3. Mukamagwiritsa ntchito, tcherani khutu m'malo mwa madzi ogwiritsira ntchito poyambira ndikuyeretsa zodzigudubuza nthawi zonse.

 

Ⅲ、 Mavuto omwe amatha kuchitika ndi zofewa pa silinda

 

Kuti akwaniritse kalembedwe kake ndikukwaniritsa zosowa zenizeni za fakitale, mafakitale ena nthawi zambiri amafunikira kumiza kufewetsa kumaliza mu silinda. Komabe, chifukwa cha kapangidwe kazinthu ndi zinthu zotsalira mu chotengera cha utoto, mafuta ena a silicone ndi zosakaniza zimatha kumamatira pakhoma la silinda. M'kupita kwa nthawi, zinthu zakuda zamafuta a viscous zidzapanga pakhoma la silinda, zomwe zimapanga mawanga amafuta a silicone pansalu.

 

★ Yankho:

 

1. Limbikitsani ntchito yoyeretsa.

2. Yesani kusankha mafuta a silicone ndi kukhazikika kwabwino mu silinda.

3.Musanagwiritse ntchito mafuta a silicone mu silinda, nsalu pamwamba pake iyenera kutsukidwa komanso yopanda alkali; Onjezani asidi moyenerera ndikusintha pH kukhala pafupifupi 6.