Chabwino nchiyani, zomatira zotentha za PUR kapena zomatira zotentha za EVA?

1. PUR(Polyurethane Reactive), dzina lathunthu ndi zomatira zotenthetsera zotentha za polyurethane zotsuka, chigawo chachikulu ndi isocyanate-terminated polyurethane prepolymer, gawo limodzi, 100% zolimba. ndi

2. Zofunika: PUR yotentha yosungunuka yomatira, kumamatira kosinthika ndi kulimba (kukhazikika), mphamvu yomangirira bwino, kukana kutentha kwapamwamba komanso kutsika, kukana madzi, kukana kwa abrasion, zero chemical resistance resistance ndi kukana kukalamba, koyenera kumangirira mapulasitiki ndi zitsulo. , amagwiritsidwa ntchito kwambiri mu zamagetsi, magalimoto, nsalu, electromechanical, Azamlengalenga ndi madera ena azachuma dziko. ndi

3. Polyurethane otentha-kusungunuka zomatira zomatira: PUR otentha-kusungunuka zomatira (chinthu chimodzi chinyezi kuchiritsa polyurethane zomatira), yomwe ndi imodzi mwa mitundu ya polyurethane otentha-kusungunuka zomatira. Malinga ndi mankhwala, pali mitundu iwiri ya zomatira zotentha za polyurethane: imodzi ndi zomatira za thermoplastic polyurethane hot melt, ndipo inayo ndi zomatira za polyurethane otentha zosungunuka. ndi

Thermoplastic polyurethane hot melt adhesive, yomwe imadziwikanso kuti hot melt polyurethane hot melt adhesive, imasungunuka ndi kutentha ndi kulimba ndi kuzizira. Zomatira zotentha za polyurethane zotentha zimagawidwa m'mitundu iwiri: mtundu wochiritsa chinyezi ndi mtundu wotsekedwa. Atatha kusungunuka ndi kutentha, amalumikizidwa ndi kulimba ndi kuzizira komanso momwe chinyezi chimayendera. Zomatira zotentha za PUR zomwe zatulutsidwa masiku ano zimatanthawuza zomatira zomata za polyurethane otentha.

2. Njira yochitira

Chomatira cha polyurethane chokhala ndi gawo limodzi chimapangidwa ndi ma terminal-NCO-based prepolymer monga maziko, okhala ndi utomoni wa thermoplastic, ma resin, ma antioxidants, chothandizira, zodzaza ndi zina zomwe sizigwirizana ndi magulu a isocyanate. Guluu wa PUR amatenthedwa ndikusungunuka mumadzimadzi, atakulungidwa pamwamba pa gawo lapansi kuti atsatidwe, zomatira ziwirizo zimayikidwa palimodzi, ndipo chomangiracho chimapangidwa pambuyo pozizira. Kuphatikizika kwa haidrojeni yogwira ntchito kumagwirizana ndi gulu la NCO kuti liwonjezere unyolo kuti likhale lopangidwa ndi polima yokhala ndi mawonekedwe osakanikirana ndi kugwirizana kwakukulu, zomwe zimawonjezera kumamatira. Gulu la -NCO mu isocyanate ndilosavuta kuchitapo kanthu ndi pawiri yomwe ili ndi haidrojeni yogwira.

3. Kusiyana pakati pa zomatira za PUR hot melt ndi zomatira za EVA:

1. Zomwe zimapangidwira ndizosiyana. PUR yotentha yosungunuka yomatira ndi ya polyurethane, ndipo EVA imatenga ethylene-vinyl acetate;

2. Zomwe zimapangidwira ndizosiyana. Zomatira zotentha za PUR zimachiritsidwa ndi chinyezi ndipo sizingasinthe pambuyo pa zomwe zachitika; EVA ndi yamagulu omangirira, imalimba pambuyo pozizira, imatha kusungunukanso ikatenthedwa, ndipo ntchitoyo imasinthidwa. ndi

3. Zomatira zotentha za PUR sizingasinthidwe pambuyo pochiritsa, zimakhala ndi mphamvu zapamwamba komanso zotsika komanso zotsika kutentha, kukana kutentha, kukana kuzizira, kukana kwa nthunzi wamadzi, kukana kwa mankhwala ndi kukana zosungunulira. Kukhazikika kwa zomatira zotentha za EVA ndizosauka, ndipo malo ochepetsera ndi otsika kuposa a polyester a PUR, omwe ambiri amakhala mozungulira 100 ° C, zomwe zimalepheretsa kugwiritsa ntchito kwake.

Ngati zomwe zili mkatizi ndi zothandiza kwa inu kapena kampani yanu, tili ndi zinthu zambiri zopangira purking zomatira za pur hot-melt, zomatira za eva hot-melt, zomatira zotentha zosungunuka ndi njira zina zopangira.Takulandirani kuti mukambirane, ndipo tidzakusinthirani zomwe mumakonda. Zomatira zomatira zotentha zotentha kwambiri komanso zotsika mtengo kwambiri