Paint Thermoplastic Powder - Supplier, Development, Pros and Cons

Wogulitsa

China PECOAT® yapadera pakupanga ndi kutumiza kunja kwa utoto wa thermoplastic, mankhwala ali polyethylene ufa penti, pvc ufa penti, unga wa nayiloni penti, ndi fluidized bed zida zoviika.

Mbiri Yachitukuko ya Thermoplastic Powder Paint

Kuyambira vuto la mafuta m'ma 1970, zokutira za ufa zakula mwachangu chifukwa cha kusungirako zinthu, kusamala zachilengedwe, komanso kukwanira kupanga makina. Utoto wa ufa wa thermoplastic (wotchedwanso thermoplastic powder coating), imodzi mwa mitundu iwiri ikuluikulu ya utoto wa ufa, idayamba kutulukira chakumapeto kwa zaka za m'ma 1930.

M'zaka za m'ma 1940, ndi chitukuko cha mafakitale a petrochemical ndi mafakitale ena, kupanga utomoni monga polyethylene, polyvinyl chloride, ndi polyamide resin kunakula mofulumira, zomwe zinayambitsa kafukufuku wa utoto wa ufa wa thermoplastic. Poyamba, anthu ankafuna kugwiritsa ntchito kukana kwa mankhwala a polyethylene kuti azipaka zitsulo. Komabe, polyethylene ndi yosasungunuka mu zosungunulira ndipo sangapangidwe kukhala zokutira zosungunulira, ndipo zomatira zoyenera sizinapezeke kuti zimamatira pepala la polyethylene ku khoma lamkati lachitsulo. Choncho, kupopera mbewu mankhwalawa ndi lawi anagwiritsidwa ntchito kusungunula ndi kuvala polyethylene ufa pamwamba zitsulo, motero kutsegula chiyambi cha thermoplastic ufa utoto.

Fluidized bedi zokutira, yomwe panopa ndi njira yogwiritsidwa ntchito kwambiri komanso yodziwika bwino yopaka utoto wa ufa wa thermoplastic, inayamba ndi njira yowaza mwachindunji mu 1950. Mu njira iyi, ufa wa utomoni umawaza mofanana pamoto wotentha wa workpiece kuti apange chophimba. Pofuna kupanga njira yowaza kuti ikhale yokhayokha, njira yopangira bedi yamadzimadzi inayesedwa bwino ku Germany mu 1952. Njira yopangira bedi yamadzimadzi imagwiritsa ntchito mpweya kapena mpweya wa inert womwe umawomberedwa mu mbale ya porous permeable pansi pa bedi lamadzimadzi kuti likhale logawidwa mofanana. anamwazikana mpweya, zomwe zimapangitsa ufa mu fluidized bedi kuyenda mu boma pafupi madzimadzi, kuti workpiece akhoza wogawana anagawira padziko workpiece ndi kupeza yosalala ndi lathyathyathya pamwamba.

Mitundu ndi Zabwino ndi Zoyipa za Thermoplastic Powder Paint

Pakadali pano, utoto wa ufa wa thermoplastic umaphatikizapo mitundu yosiyanasiyana monga polyethylene/polypropylene zokutira zaufa, zokutira za ufa wa polyvinyl chloride, zokutira za ufa wa nayiloni, zokutira zaufa za polytetrafluoroethylene, ndi zokutira za ufa wa thermoplastic polyester. Zakhala zikugwiritsidwa ntchito kwambiri poteteza magalimoto, mapaipi oletsa dzimbiri, ndi zinthu zosiyanasiyana zapakhomo.

polyethylene (PE) ndi zokutira za ufa wa polypropylene (PP).

Polyethylene ndi polypropylene zinali zina mwa zinthu zoyamba kugwiritsidwa ntchito mu utoto wa ufa wa thermoplastic ndipo zinali ziwiri zofunika kwambiri. ma polima a thermoplastic m'zaka zapitazi. Pakadali pano, polyethylene yokhala ndi kachulukidwe kakang'ono komanso yotsika kwambiri yagwiritsidwa ntchito m'munda wa thermoplastic. Polyethylene yochuluka kwambiri imagwiritsidwa ntchito m'mafakitale, pamene polyethylene yotsika kwambiri imagwiritsidwa ntchito m'munda wa anthu.

Monga unyolo wa molekyulu wa polyethylene ndi polypropylene ndi chomangira cha kaboni-carbon, onse amakhala ndi mawonekedwe osakhala a polar a olefins, motero zokutira za polyethylene ndi polypropylene ufa zimakhala ndi kukana kwamankhwala kwabwino ndipo zimagwiritsidwa ntchito kwambiri polimbana ndi dzimbiri. Amagwiritsidwa ntchito poteteza, kusunga, ndi zotengera, mapaipi, ndi mapaipi amafuta amankhwala ndi mankhwala opangira mankhwala. Monga zinthu zoziziritsa kukhosi, utoto wamtundu uwu umakhala wosakanizidwa bwino ndi gawo lapansi ndipo umafunikira chithandizo chapamwamba cha gawo lapansi, kapena kugwiritsa ntchito pulayimale kapena kusinthidwa kwa polyethylene ndi zinthu zina.

ubwino 

Utoto wa polyethylene ndiye utoto womwe umagwiritsidwa ntchito kwambiri komanso wopangidwa ndi thermoplastic powder.

Ili ndi zotsatirazi:

1. Kukana madzi abwino, kukana kwa asidi ndi alkali, ndi kukana mankhwala;
2. Kusungunula kwabwino kwamagetsi ndi katundu wotenthetsera kutentha;
3. Mphamvu yabwino kwambiri, kusinthasintha, ndi kukana kwamphamvu;
4. Good otsika kutentha kukana, akhoza kukhala maola 400 popanda akulimbana pa -40 ℃;
5. Mtengo wachibale wa zopangira ndi wotsika, wopanda poizoni komanso wokonda zachilengedwe.

Kulephera

Komabe, chifukwa cha mphamvu ya gawo lapansi la polyethylene, utoto wa ufa wa polyethylene ulinso ndi zovuta zina zomwe sizingapeweke:

1. Kulimba, kukana kuvala, ndi mphamvu zamakina za zokutira ndizosauka;
2. Kumamatira kwa zokutira kumakhala koyipa ndipo gawo lapansi liyenera kuthandizidwa mosamalitsa;
3. Kusasunthika kwanyengo, komwe kumakonda kupsinjika kusweka pambuyo pokumana ndi kuwala kwa ultraviolet;
4. Kusagwira bwino kwa kutentha kwapamwamba komanso kusagwirizana ndi kutentha kwachinyontho.

Polyvinyl kolorayidi (PVC) kupaka ufa

Polyvinyl kolorayidi (PVC) ndi polima wa amorphous wokhala ndi makristasi ochepa osakwanira. Ambiri PVC Zopangidwa ndi utomoni zimakhala ndi mamolekyu olemera pakati pa 50,000 ndi 120,000. Ngakhale mkulu maselo kulemera PVC utomoni ndi bwino thupi katundu, otsika maselo kulemera PVC utomoni wokhala ndi kukhuthala kotsika kosungunuka ndi kutentha kofewetsa ndi oyenera kwambiri ngati zida za utoto wa ufa wa thermoplastic.

PVC palokha ndi zinthu zolimba ndipo sizingagwiritsidwe ntchito ngati utoto wa ufa wokha. Popanga zokutira, kuchuluka kwa pulasitiki kumafunika kuwonjezeredwa kuti musinthe kusinthasintha kwa PVC. Nthawi yomweyo, kuwonjezera zopangira mapulasitiki kumachepetsanso kulimba kwa zinthu, modulus, komanso kulimba. Kusankha mtundu woyenera ndi kuchuluka kwa plasticizer kumatha kukwaniritsa malire ofunikira pakati pa kusinthasintha kwa zinthu ndi kuuma.

Kwa wathunthu PVC mtundu wa utoto wa ufa, zokhazikika nazonso ndizofunikira. Kuthetsa kukhazikika kwa kutentha kwa PVC, mchere wosakaniza wa calcium ndi zinki ndi kukhazikika kwabwino kwa kutentha, barium ndi cadsopo mium, mercaptan tin, dibutyltin zotumphukira, epoxy compounds, etc. zapangidwa. Ngakhale ma stabilizer otsogolera amakhala ndi kukhazikika kwamafuta, adachotsedwa pamsika chifukwa chazifukwa zachilengedwe.

Panopa, kwambiri ntchito mankhwala kwa PVC Utoto wa ufa ndi zida zosiyanasiyana zapakhomo ndi ma rack ochapira mbale. PVC mankhwala ali bwino kusamba kukana ndi kukana kuipitsidwa chakudya. Angathenso kuchepetsa phokoso la mbale zoyikamo mbale. Zovala zophimbidwa ndi mbale PVC mankhwala sangapange phokoso poyika tableware. PVC zokutira ufa angagwiritsidwe ntchito ndi fluidized bedi yomanga kapena electrostatic kupopera mbewu mankhwalawa, koma amafuna osiyana tinthu tinthu kukula. Tiyeneranso kuzindikira kuti PVC utoto wa ufa umatulutsa fungo loipa pa nthawi yomizidwa ndipo ndi lovulaza thupi la munthu. Kugwiritsa ntchito kwawo kwayamba kale kuletsedwa m'mayiko akunja.

ubwino

Ubwino wa utoto wa polyvinyl chloride ufa ndi:

1. Mitengo yamtengo wapatali yotsika;
2. Kukana kwabwino kwa kuipitsa, kukana kusamba, komanso kukana dzimbiri;
3. Mphamvu zamakina apamwamba komanso ntchito yabwino yotchinjiriza magetsi.

Kulephera

Kuipa kwa utoto wa polyvinyl chloride powder ndi:

1. Kusiyana kwa kutentha pakati pa kutentha kosungunuka ndi kutentha kwa kutentha kwa PVC utomoni ndi wochepa. Panthawi yophimba, kutentha kumafunika kuyendetsedwa bwino kuti zisawonongeke.
2. Chophimbacho sichigonjetsedwa ndi ma hydrocarbon onunkhira, esters, ketoni, ndi zosungunulira za chlorinated, ndi zina zotero.

Polyamide (nayiloni) yokutira ufa

Utoto wa Polyamide, womwe umadziwika kuti nayiloni, ndi utomoni wogwiritsidwa ntchito kwambiri ndi thermoplastic. Nayiloni ili ndi mawonekedwe abwino kwambiri, kuuma kwakukulu, komanso kukana kwamphamvu kwambiri. Ma coefficients osunthika komanso osasunthika a zokutira za nayiloni ndi ochepa, ndipo ali ndi lubricity. Choncho, amagwiritsidwa ntchito muzitsulo zamakina a nsalu, magiya, ma valve, ndi zina zotero. Zovala za nayiloni za ufa zimakhala ndi mafuta abwino, phokoso lochepa, kusinthasintha kwabwino, kumamatira kwambiri, kukana mankhwala, ndi kukana zosungunulira. Atha kugwiritsidwa ntchito ngati zokutira zoyenera zoletsa kuvala komanso zopaka mafuta m'malo amkuwa, aluminiyamu, cadmium, zitsulo, ndi zina zotero. Kuchuluka kwa filimu yokutira ya nayiloni ndi 1/7 yokha yamkuwa, koma kukana kwake kuvala kumakhala kasanu ndi katatu kuposa mkuwa.

Zovala za ufa wa nayiloni sizowopsa, zopanda fungo, komanso zopanda pake. Kuphatikizana ndi mfundo yakuti satengeka ndi fungus kapena kulimbikitsa kukula kwa bakiteriya, amagwiritsidwa ntchito bwino pamakampani opanga zakudya kuti azivala zida zamakina ndi mapaipi kapena kuvala malo omwe amakumana ndi chakudya. Chifukwa cha kukana kwake kwamadzi komanso madzi amchere, amagwiritsidwanso ntchito kwambiri popaka zida zamakina ochapira, ndi zina zambiri.

Malo ofunikira ogwiritsira ntchito zokutira za ufa wa nayiloni ndi kuvala mitundu yosiyanasiyana ya zogwirira ntchito, osati chifukwa chakuti ali ndi zinthu zofunika monga kukana kuvala ndi kumenyana ndi kukanda, komanso chifukwa chakuti kutentha kwawo kochepa kumapangitsa kuti zogwirira ntchito zikhale zofewa. Izi zimapangitsa kuti zipangizozi zikhale zoyenera kwambiri pogwiritsira ntchito zida zokutira, zogwirira zitseko, ndi mawilo owongolera.

Poyerekeza ndi zokutira zina, mafilimu okutira nayiloni ali ndi vuto losalimbana ndi mankhwala ndipo sali oyenera kugwiritsidwa ntchito m'malo opangira mankhwala monga ma acid ndi alkalis. Chifukwa chake, utomoni wina wa epoxy nthawi zambiri umawonjezeredwa ngati zosintha, zomwe sizingangowonjezera kukana kwa dzimbiri kwa zokutira za nayiloni komanso kulimbitsa mphamvu yolumikizana pakati pa filimu yokutira ndi gawo lapansi lachitsulo. Ufa wa nayiloni umakhala ndi kuchuluka kwa mayamwidwe amadzi ndipo umakhala ndi chinyezi pakumanga ndi kusunga. Choncho, iyenera kusungidwa pansi pa zotsekedwa ndipo sayenera kugwiritsidwa ntchito kwa nthawi yayitali pansi pa chinyezi ndi kutentha. Chinthu china choyenera kukumbukira ndi chakuti nthawi ya pulasitiki ya ufa wa nayiloni ndi yochepa kwambiri, ndipo ngakhale filimu yophimba yomwe sikusowa pulasitiki ikhoza kukwaniritsa zomwe mukufuna, zomwe ndi gawo lapadera la ufa wa nayiloni.

Polyvinylidene fluoride (PVDF) utoto wa ufa

Chophimba choyimira kwambiri cholimbana ndi nyengo mu utoto wa ufa wa thermoplastic ndi zokutira za ufa wa polyvinylidene fluoride (PVDF). Monga polima yoyimilira kwambiri ya ethylene polima, PVDF ili ndi makina abwino komanso kukana kwamphamvu, kukana kwamphamvu kwambiri, kusinthasintha kwapadera komanso kuuma, ndipo imatha kukana mankhwala owononga ambiri monga ma acid, alkali, ndi ma okosijeni amphamvu. Kuphatikiza apo, sichisungunuka m'mafuta osungunulira omwe amagwiritsidwa ntchito kwambiri popanga zokutira, zomwe zimachitika chifukwa cha ma bond a FC omwe ali mu PVDF. Nthawi yomweyo, PVDF imakwaniritsanso zofunikira za FDA ndipo itha kugwiritsidwa ntchito pokonza chakudya ndipo imatha kukumana ndi chakudya.

Chifukwa cha kusungunuka kwake kwakukulu, PVDF imakonda kukhala ndi zibowo komanso kusamata bwino kwachitsulo muzopaka filimu zopyapyala, ndipo mtengo wake ndi wokwera kwambiri. Choncho, nthawi zambiri, sichigwiritsidwa ntchito ngati maziko okhawo a zokutira ufa. Nthawi zambiri, pafupifupi 30% ya utomoni wa acrylic amawonjezedwa kuti izi zitheke. Ngati zomwe zili mu acrylic resin ndizokwera kwambiri, zidzakhudza kukana kwa nyengo ya filimu yokutira.

Kuwala kwa filimu yokutira ya PVDF ndikocheperako, nthawi zambiri kumakhala pafupifupi 30±5%, komwe kumalepheretsa kugwiritsa ntchito kukongoletsa pamwamba. Pakadali pano, imagwiritsidwa ntchito kwambiri ngati zokutira zomanga nyumba zazikulu, zogwiritsidwa ntchito padenga, makoma, ndi mafelemu a mazenera a aluminiyamu otuluka, okhala ndi kukana kwanyengo kwabwino kwambiri.

Gwiritsani Ntchito Kanema