Kuyika zisindikizo ndi zida zosindikiza kutentha ndi izi;

1. Kuyika njira yosindikiza

Njira zosindikizira phukusi zimaphatikizapo kusindikiza kotentha, kusindikiza kozizira, kusindikiza zomatira, ndi zina zotero. Kusindikiza kutentha kumatanthauza kugwiritsa ntchito gawo lamkati la thermoplastic wosanjikiza mumapangidwe amakanema ambiri, omwe amachepetsa kusindikiza mukatenthetsa, ndikukhazikika pomwe gwero la kutentha limakhala kuchotsedwa. Kutentha kosindikiza mapulasitiki, zokutira ndi kusungunuka kotentha ndizomwe zimagwiritsidwa ntchito posindikiza kutentha. Kusindikiza kozizira kumatanthauza kuti imatha kusindikizidwa posindikiza popanda kutentha. Chofunda chofala kwambiri chosindikiza ndi zokutira m'mphepete zomwe zimagwiritsidwa ntchito m'mphepete mwa thumba. Kusindikiza kwa zomata sikugwiritsidwa ntchito kwenikweni polemba zinthu zingapo, zomwe zimagwiritsidwa ntchito popangira zinthu zomwe zili ndi pepala.

2. Kutentha kosindikiza

(1)Polyethylene (PE) ndi mtundu wa milky yoyera, yopepuka komanso yopanda kanthu yolimba. Ndiwosavomerezeka, wopanda poizoni komanso wopepuka kuposa madzi. Chingwe cha PE macromolecular chimasinthasintha bwino ndipo ndichosavuta kuchikometsa. Ndi nkhani yovuta kutentha. Monga cholembera, choyipa chachikulu cha PE ndikubvuta kwa mpweya, kupezeka kwakukulu kwa mpweya ndi nthunzi, mphamvu zochepa ndi kukana kutentha; ndikosavuta kunyozetsedwa ndi kuwala, kutentha ndi mzati, motero antioxidant ndi kuwala komanso kulimbitsa kutentha nthawi zambiri kumawonjezeredwa kuzinthu za PE kuti zisawonongeke; PE imakhala ndi vuto losautsa chilengedwe, ndipo silimalimbana ndi dzimbiri la h2s04, HNO3 ndi oxidant yake, ndipo lidzawonongedwa ndi ma hydrocarboni aliphatic kapena ma hydrocarbon okhala ndi chlorine akamatenthedwa; ntchito yosindikiza ya PE ndiyosauka, ndipo pamwamba pake siyopanda polar, chifukwa chake chithandizo cha corona chiyenera kuchitidwa musanasindikize ndi kulumikizana kowuma kukonza kuyanjana ndi kulumikizana kouma kwa inki yosindikiza.

Pe yomwe imagwiritsidwa ntchito posindikiza kutentha makamaka imaphatikizapo:
① otsika osalimba polyethylene (LDPE), amatchedwanso kuthamanga polyethylene;
② mkulu osalimba polyethylene (HI) Pe, amatchedwanso otsika kuthamanga polyethylene;
③ sing'anga polyethylene (nu) PE :); liniya otsika osalimba polyethylene (LLDPE);
④ metallocene catalyzed polyethylene.

(2)Katundu wa filimu ya polypropylene (CPP) yomwe imagwiritsidwa ntchito posindikiza kutentha ndi yosiyana pang'ono ndi ya polypropylene yochokera ku biaxially chifukwa cha kapangidwe kake kosiyanasiyana. Ubwino ndi zovuta za CPP zikuwonetsedwa pazomwe zili mu "polypropylene".

(3) PVC (yofupikitsidwa ngati PVC) ndi utoto wopanda utoto, wowonekera komanso wolimba womwe uli ndi mphamvu yamagulu angapo yamphamvu komanso mphamvu yama intermolecular, motero imakhala yolimba komanso botolo lolimba la pulasitiki.

PVC ndi yotchipa komanso yosunthika. Zitha kupangidwa kukhala zotengera zolimba zolimba, thovu lowonekera komanso makanema osunthika komanso zida zopangira pulasitiki. Chifukwa cha kawopsedwe ndi kuwola kwake kwa dzimbiri, kumwa kwake kumachepa ndipo pang'onopang'ono m'malo mwa zida zina.

(4) EVA (ethylene vinyl acetate copolymer) poly (ethylene vinyl acetate) (EVA) poly (ethylene vinyl acetate) (EVA) poly (ethylene vinyl acetate) (EVA) poly (ethylene vinyl acetate) (EVA) poly (ethylene vinyl acetate) ( EVA) poly (ethylene vinyl acetate) (EVA) poly (ethylene vinyl acetate) (eva-eva) poly (ethylene vinyl acetate) (EVA) poly (ethylene vinyl acetate) (EVA. EVA ndi translucent kapena pang'ono yamkaka yoyera yolimba yokonzedwa ndi copolymerization ya ethylene ndi vinylacetic acid viniga. Makhalidwe ake amasintha ndi zomwe zili mu monomers ziwirizi.Choncho, posankha mtundu wa EVA, iyenera kutsimikiziridwa molingana ndi kagwiritsidwe, ndipo itha kugwiritsidwa ntchito ngati pulasitiki, zomatira zotentha komanso zokutira .
EVA ZINAWATHERA chimagwiritsidwa ntchito ngati wosanjikiza mkati mwa gulu gulu chifukwa elasticity wake wabwino ndi otsika kutentha kusindikiza mphamvu. Amagwiritsidwa ntchito pomangiriza, zokutira, zokutira, zotchingira chingwe ndi zotengera zamtundu ndi zomata zake zabwino (zabwino kapena zowongolera zina ndi zida zambiri za polar ndi zopanda polar).

(5)PVDC (polyvinylidene chloride) PVDC nthawi zambiri imanena za copolymer ya vinylidene chloride. Ma polima omwe amapezeka ndi polymerization ali ndi crystallinity yayikulu, malo ochepetsera (185-200'c) komanso pafupi ndi kuwonongeka kwa kutentha (210-2250). Ili ndi kusagwirizana koyipa ndi tackifier wamba, kotero nkovuta kuti ipangidwe.
PVDC ndichinthu cholimba komanso chowonekera bwino chokhala ndi miyala yayitali kwambiri komanso yobiriwira yachikaso. Ili ndi chiwopsezo chotsatsira kwambiri kuti madzi akumeze gasi, gasi ndi kununkhiza, ndipo ali ndi chinyezi chabwino kwambiri, kulimba kwa mpweya ndi kusungira kununkhira. Ndizabwino kwambiri zotchinga. Ndi kugonjetsedwa ndi asidi, soda ndi zosungunulira zosiyanasiyana, mafuta kugonjetsedwa, refractory ndi kudziletsa kuzimitsa.