Chikwama choluka ndiukadaulo wopangira thumba

Pulasitikimatumba olukaamapangidwa ndi polypropylene (PP) monga zopangira zazikulu, ndipo amapangidwa ndi extrusion, kujambula waya, kuluka, kuluka ndi kupanga thumba.
Polypropylene ndi thermoplastic translucent and the semi-crystalline thermoplastic yokhala ndi mphamvu zambiri, kutchinjiriza bwino, kuyamwa kwamadzi otsika, kutentha kwambiri kwa thermoforming, kachulukidwe kakang'ono komanso crystallinity yayikulu.Ndilo lalikulu zopangira za matumba nsalu.Zodzaza zosinthidwa nthawi zambiri zimakhala ndi ulusi wagalasi, zodzaza mchere, mphira wa thermoplastic, ndi zina zotero.

Matumba opangidwa ndi pulasitiki ali ndi ntchito zambiri.Pakali pano, matumba pulasitiki nsalu zimagwiritsa ntchito ma CD mankhwala ulimi, thumba ma CD simenti, ma CD chakudya, zomangamanga geotechnical, zoyendera alendo, zipangizo kulamulira kusefukira, etc. matumba nsalu makamaka monga matumba pulasitiki nsalu (matumba nsalu popanda filimu), gulu pulasitiki nsalu. matumba ndi nsalu zosiyanasiyana zoluka.Kapangidwe ka matumba apulasitiki oluka ndi motere: kuluka kusindikiza, kudula, ndi kusoka m’matumba oluka.
Malinga ndi zida zomwe zimagwiritsidwa ntchito, imatha kudulidwa kaye kenako kusindikizidwa kapena kusindikizidwa kenako ndikudula.Okonza okha amatha kumaliza kusindikiza, kudula, kusoka ndi njira zina mosalekeza, ndipo amathanso kupangidwa kukhala matumba a valve, matumba apansi, ndi zina zotero. Kwa nsalu zomveka bwino, matumba amatha kupangidwa ndi gluing msoko wapakati.Njira yopangira matumba apulasitiki opangidwa ndi pulasitiki ndikuphatikiza kapena kuvala nsalu zolukidwa, zida zokutira ndi pepala kapena filimu.The chifukwa chubu kapena chidutswa cha nsalu akhoza kudula, kusindikizidwa, kusokedwa ndi kupanga wamba pansi msoko thumba, kapena kukhomerera, apangidwe, kudula, kusindikizidwa ndi kusokera mu thumba simenti, ndipo analandira chidutswa cha nsalu kungakhale Kusoka, gluing, kusindikiza, kudula ndi kumata m'matumba apansi.Ithanso kuwotcherera ndikukulungidwa kuti ipange ma tarpaulins ndi geotextiles.Nsalu zosaoneka bwino zimatha kukutidwa kapena kutsekedwa kuti zipange tarpaulins, geotextiles, etc.
Zizindikiro zaukadaulo za njira yopangira mawaya athyathyathya zimagawidwa m'magulu anayi:

1. Mlozera wa ntchito zamakina.Makamaka mphamvu yamakokedwe, mphamvu yachibale, elongation panthawi yopuma, liwiro la mzere, kupatuka kwa mzere;

2. Physical and chemical modification index.Pali makamaka kusakaniza kusinthidwa, kusakaniza chiŵerengero, ntchito yowonjezera yowonjezera yowonjezera chiŵerengero, ndi chiŵerengero chophatikizira cha zinyalala ndi zipangizo zobwezerezedwanso;

3. Tolerance dimension index.Pali makamaka lathyathyathya waya makulidwe, lathyathyathya waya m'lifupi ndi zina zotero.

4. Physical rheological index.Pali makamaka chiŵerengero cha kulembedwa, chiŵerengero cha kukula, chiŵerengero cha kulembera ndi chiŵerengero chobwezeretsa;
The polyethylene zinthu mu thumba akalowa ndondomeko ndi mkangano, kusungunuka, plasticized ndi extruded stably ndi extruder;
Finyani mu filimu ya cylindrical kudzera pamutu wakufa;yambitsani mpweya woponderezedwa kuti ukulitse kupanga thovu la tubular;
Gwiritsani ntchito mphete yamphepo yoziziritsa kuti muziziziritsa komanso mawonekedwe, kukoka fupa la herringbone ndikulipinda;
Kupyolera mu ma traction roller, ma roller oyendetsa ndi opiringitsa,
Pomaliza, kudula ndi kusindikiza kutentha kumachitidwa kuti amalize kupanga thumba lamkati lamkati, ndipo pamapeto pake thumba ladzaza.
Polypropylene yoyera yopanga ulusi wathyathyathya sangathe kukwaniritsa zofunikira, ndipo gawo lina la polyethylene yothamanga kwambiri, calcium carbonate ndi masterbatch amtundu ziyenera kuwonjezeredwa.Kuwonjezera pang'ono mkulu kuthamanga polyethylene kungachepetse mamasukidwe akayendedwe ndi kusungunuka liwiro la zinthu otaya pa extrusion, kuonjezera fluidity, kusintha toughness ndi softness wa thonje lathyathyathya ndi thumba nsalu, kukhalabe elongation ena pa yopuma, ndi kusintha otsika. mphamvu ya kutentha kwa polypropylene..
Kuwonjezera polypropylene kumtengowo kungachepetse kutentha kwa processing ndi kuthamanga.Imawongolera kuyenda kwazinthu ndi kumamatira, komanso kumawonjezera mphamvu zolimba.Kuwonjezera kwa calcium carbonate kungasinthe zolakwika za kuwonekera ndi kuwala, kuchepetsa magetsi owopsa omwe amapangidwa ndi mikangano panthawi yotambasula ndi kuluka, kuonjezera kumatira kwa inki kwa zizindikiro zosindikizidwa, ndi kuchepetsa kuchepa kwachilengedwe kwa zinthu zomalizidwa panthawi yosungira.