Galasi lopaka utoto ndi galasi lomwe limagwiritsidwa ntchito kwambiri popanga magalasi omanga, lomwe limadziwikanso kuti galasi lamtendere. Galasi lopaka utoto limapangidwa ndi magalasi angapo, kuwonjezera pa galasi, lina lililonse ndi sangweji yomwe ili pakati pa galasi, nthawi zambiri pamakhala mitundu itatu ya masangweji: EVA, PVB, SGP.
Dzina la PVB sandwich Trust ndi limodzi mwa mayina odziwika bwino. PVB ndi chinthu chodziwika bwino chomwe chimagwiritsidwa ntchito popanga magalasi omanga ndi magalasi a magalimoto pakadali pano.
Njira yosungira ndi kukonza ya PVB interlayer ndi yovuta kwambiri kuposa EVA, ndipo zofunikira pa kutentha ndi chinyezi ndizokwera. Kukonza PVB kumapempha kuwongolera kutentha pakati pa 18℃-23℃, kuwongolera chinyezi pa 18-23%, PVB imatsatira chinyezi cha 0.4%-0.6%, pambuyo potenthetsera, njira yozungulira kapena vacuum imagwiritsidwa ntchito ndi autoclade kuti asiye kutentha ndi kupanikizika, kutentha kwa autoclade: 120-130℃, kupanikizika: 1.0-1.3MPa, nthawi: 30-60min. Zipangizo za ogula za PVB zimafunikira ndalama zokwana miliyoni imodzi, ndipo pali zovuta zina kwa mabizinesi ang'onoang'ono. Zaka zingapo zapitazo, makamaka ku Dupont yakunja, Shou Nuo, madzi ndi opanga ena amagwiritsa ntchito, PVB yakunyumba imabwezeretsedwanso deta kuti asiye kukonza kwachiwiri, koma kukhazikika kwa khalidwe sikuli bwino kwambiri. M'zaka zaposachedwa, opanga ogula a PVB akuchulukirachulukira.
PVB ili ndi chitetezo chabwino, choteteza mawu, chowonekera bwino komanso chokana kugwiritsa ntchito mankhwala owononga mphamvu, koma kukana madzi a PVB sikwabwino, ndipo n'kosavuta kutsegula pamalo ozizira kwa nthawi yayitali.
EVA imayimira ethylene-vinyl acetate copolymer. Chifukwa cha kukana kwake madzi ndi dzimbiri, imagwiritsidwa ntchito kwambiri mu ma CD, functional shed film, thovu shoe material, hot melt glue, waya ndi chingwe ndi zoseweretsa, ndi zina zotero, China nthawi zambiri imagwiritsa ntchito EVA ngati chidziwitso chokha.
EVA imagwiritsidwanso ntchito ngati sandwich ya galasi lopangidwa ndi laminated, ndipo mtengo wake ndi wokwera. Poyerekeza ndi PVB ndi SGP, EVA ili ndi ntchito yabwino komanso kutentha kochepa kwa ablation, ndipo imatha kukonzedwa kutentha kukafika pafupifupi 110℃. Zida zake zonse zofunika kwa ogula zimafuna pafupifupi 100,000 yuan.
Filimu ya EVA ili ndi ntchito yabwino, yomwe ingalepheretse kutsekeka kwa waya ndikugubuduzika mu filimuyi kuti ipange galasi lokongola lokongoletsa ndi mapatani ndi mapatani. EVA ili ndi kukana bwino madzi, koma imalimbana ndi kuwala kwa mankhwala, ndipo kutentha kwa dzuwa kwa nthawi yayitali kumakhala kosavuta kukhala kwachikasu ndi kwakuda, kotero imagwiritsidwa ntchito makamaka pogawa mkati.
SGP imayimira ionic intermediate membrane (Sentryglass Plus), yomwe ndi sandwich yopangidwa ndi DuPont yomwe imagwira ntchito bwino kwambiri. Kugwira kwake ntchito bwino kumaonekera mu:
1, makhalidwe abwino kwambiri a makina, mphamvu yayikulu. Pansi pa makulidwe omwewo, mphamvu yonyamula ya sangweji ya SGP ndi kawiri kuposa ya PVB. Pansi pa katundu ndi makulidwe omwewo, kupindika kwa galasi la SGP ndi kotala la PVB.
2. Mphamvu yong'ambika. Pa makulidwe omwewo, mphamvu yong'ambika ya filimu yomatira ya PVB ndi yowirikiza kasanu kuposa ya PVB, ndipo imatha kumamatiridwanso ku galasi pansi pa kung'ambika, popanda kugwetsa galasi lonse.
3, kukhazikika kwamphamvu, kukana kunyowa. Filimu ya SGP ndi yopanda utoto komanso yowonekera bwino, ikakhala ndi dzuwa ndi mvula kwa nthawi yayitali, imalimbana ndi kuwala kwa mankhwala, si yachikasu mosavuta, imakhala yachikasu <1.5, koma kuchuluka kwachikasu kwa filimu ya sandwich ya PVB ndi 6 ~ 12. Chifukwa chake, SGP ndiye wokondedwa wa galasi loyera kwambiri.
Ngakhale kuti njira yogwiritsira ntchito SGP ili pafupi ndi ya PVB, mtengo wake ndi wokwera, kotero kugwiritsa ntchito ku China sikofala kwambiri, ndipo anthu ambiri sakudziwa bwino za izi.
Nthawi yotumizira: Ogasiti-09-2024
