Kutchuka kwa matumba oluka

Makasitomala ambiri kudzera patsamba lathu ku upangiri wamafoni pa kutchuka kwa mitundu ya zikwama zoluka, ndiye lero DongLai woluka chikwama cha Xiaobian kufotokoza kutchuka kwamitundu yamathumba oluka.

Mitundu yamatumba oluka

Matumba olukidwa amatchedwanso matumba a chikopa cha njoka. Ndi mtundu wa pulasitiki, womwe umagwiritsidwa ntchito kwambiri pakuyika. Zopangira nthawi zambiri zimakhala polyethylene, polypropylene ndi zida zina zamapulasitiki. Pano pali chidule chachidule cha mtundu wa chikwama cholukidwa ndi ntchito.

Polyethylene ndiye zopangira zazikulu zakunja, polypropylene ndiye chinthu chachikulu chapakhomo. Ndi utomoni wa thermoplastic wopangidwa ndi polymerization wa ethylene. M'makampani, amaphatikizanso ma copolymers a ethylene okhala ndi α-olefin pang'ono. Polyethylene ndi odorless, sanali poizoni, waxy, ali kwambiri otsika kutentha kukana (osachepera ntchito kutentha mpaka -70 ~ -100 ℃), zabwino mankhwala bata, ambiri asidi ndi zamchere kukana dzimbiri (acid kukana, makutidwe ndi okosijeni), insoluble mu zosungunulira ambiri kutentha firiji, otsika mayamwidwe madzi, kwambiri magetsi kutchinjiriza ntchito; Komabe, polyethylene imakhudzidwa kwambiri ndi zovuta zachilengedwe (mankhwala ndi makina opangira) ndipo imakhala yosakanizidwa ndi ukalamba wotentha. The zimatha polyethylene zimasiyanasiyana zosiyanasiyana, makamaka kutengera kapangidwe maselo ndi kachulukidwe. Njira zosiyanasiyana zopangira zimatha kutulutsa kachulukidwe kosiyana (0.91-0.96g/cm3). Polyethylene imatha kukonzedwa mofanana ndi mapulasitiki wamba a thermoplastic amawumbidwa (onani Kukonza Pulasitiki). Amagwiritsidwa ntchito kwambiri popanga filimu, zotengera, mapaipi, waya umodzi, waya ndi chingwe, zofunikira za tsiku ndi tsiku, etc. Ikhoza kugwiritsidwa ntchito ngati zipangizo zamakono zowonongeka kwa TV, radar, etc. Mu 1983, mphamvu zonse zopangira polyethylene padziko lonse lapansi zinali matani 24.65, ndipo nyumba yomwe ikumangidwa inali ndi mphamvu ya matani 3.16.

Polypropylene (PP)

Utoto wa thermoplastic wopangidwa ndi polymerization wa propylene. Pali mitundu itatu ya masinthidwe, ndiyo, isotopic yonse, atactic ndi indirect. Zogulitsa zamafakitale zimapangidwa makamaka ndi zida za isotopic. Polypropylene imaphatikizansopo copolymer ya propylene ndi ethylene pang'ono. Nthawi zambiri imakhala yokhazikika, yopanda mtundu, yopanda fungo komanso yopanda poizoni. Chifukwa cha malamulo ake dongosolo, mkulu crystallinity, malo osungunuka mpaka 167 ℃, kutentha kukana. Ndi kachulukidwe ka 0.90g/cm3, ndiye pulasitiki yopepuka kwambiri yosunthika. Kukana kwa dzimbiri, kulimba kwamphamvu 30MPa, mphamvu, kukhazikika komanso kuwonekera ndizabwino kuposa polyethylene. Choyipa chake ndi chakuti kukana kwa kutentha kumachepa, ndikosavuta kukalamba, koma kumatha kusinthidwa ndikuwonjezera antioxidant kuti mugonjetse.

Mtundu wa thumba loluka ndi loyera kapena loyera nthawi zambiri, lopanda poizoni komanso lopanda kukoma, kuvulaza thupi la munthu nthawi zambiri kumakhala kochepa. Ngakhale zopangidwa ndi mapulasitiki amitundu yosiyanasiyana, koma chitetezo champhamvu cha chilengedwe, mphamvu yobwezeretsanso;

Chikwama choluka chimagwiritsidwa ntchito kwambiri, chimagwiritsidwa ntchito kwambiri kunyamula katundu wamitundu yosiyanasiyana, ndipo chimagwiritsidwa ntchito kwambiri m'makampani;

Pulasitiki nsalu thumba ndi polypropylene utomoni waukulu zopangira, extrusion ndi kutambasula mu lathyathyathya ulusi, ndiyeno nsalu mu thumba.

Chikwama chopangidwa ndi pulasitiki chopangidwa ndi pulasitiki chopangidwa ndi nsalu ngati maziko, kudzera mumayendedwe otaya.

Amagwiritsidwa ntchito kulongedza ufa kapena zida zolimba za granular ndi zolemba zosinthika. Chikwama chopangidwa ndi pulasitiki chophatikizika chimagawidwa pawiri m'thumba limodzi ndi atatu m'thumba limodzi molingana ndi kapangidwe kake.

Malinga ndi njira yosokera, imatha kugawidwa m'thumba la pansi, thumba lakumanzere lakumunsi, thumba loyikapo ndi thumba lovala lopaka ndi guluu.

Malinga ndi m'lifupi ogwira thumba, akhoza kugawidwa mu 450, 500, 550, 600, 650 ndi 700 mm. Mafotokozedwe apadera adzagwirizana ndi onse awiri.

Pamwambapa ndi kutchuka kwa mapangidwe ang'onoang'ono amitundu yonse yomaliza yolumikizana ndi chikwama cholukidwa, kudzera pakugawana zomwe zili, kutchuka kwamitundu yolukidwa yamatumba ali ndi chidziwitso china, ngati mukufuna kulowa mozama muthumba lazidziwitso zamsika, mutha kulumikizana ndi wogulitsa kukampani yathu, kapena kum'mawa ndi chikwama choluka pamalopo kufufuza, kulumikizana kwapapepala kumakambidwa.