Zopaka Pulasitiki Powder

Kodi zokutira za pulasitiki za ufa ndi chiyani?

Zophimba za ufa wa pulasitiki ndi mtundu wa zophimba za thermoplastic zomwe zimaphatikizapo kuyika ufa wa pulasitiki wouma pa substrate, womwe umakonzedwa pansi pa kutentha kuti ukhale wolimba, wolimba, komanso wokongola. Njira imeneyi imagwiritsidwa ntchito kwambiri pophimba pamwamba pa zitsulo kuti ziteteze ku dzimbiri, kusweka, ndi kuwonongeka kwa nyengo, komanso kukongoletsa mawonekedwe awo okongola.

Njira yophikira ufa imakhudza masitepe angapo, kuyambira ndi kukonzekera gawo lapansi. Izi zimaphatikizapo kuyeretsa ndi kukonza pamwamba kuti pasakhale dothi, mafuta, ndi zinthu zina zodetsa zomwe zingasokoneze kumatirira kwa ufa. Kenako, ufawo umayikidwa pamwamba pogwiritsa ntchito bedi lokhala ndi madzi kapena mfuti yamagetsi yomwe imapangitsa kuti zigwirizane ndi gawo lapansi. Gawo lapansi lophimbidwa limatenthedwa mu uvuni, womwe umasungunula ufawo ndikupangitsa kuti utuluke ndikuchira, ndikupanga chophimba chosalala komanso chofanana.

ubwino

Ubwino umodzi waukulu wa zokutira ufa wa pulasitiki ndikuti ndi wokonda zachilengedwe. Mosiyana ndi zokutira zamadzimadzi zachikhalidwe, zomwe zimakhala ndi zosungunulira zomwe zimatha kutulutsa ma VOC (zosakaniza zamagulu) zowononga mumlengalenga, zokutira zaufa nthawi zambiri zimakhala zopanda zosungunulira ndipo zimatulutsa zinyalala zochepa. Izi zimawapangitsa kukhala okhazikika komanso ochezeka komanso ochezeka popaka zida zambiri.

Phindu lina la zokutira za ufa wa pulasitiki ndikuti limapereka chitetezo chabwino kwambiri cha dzimbiri. Kupaka ufa kumapanga chotchinga pakati pa gawo lapansi ndi chilengedwe, kuteteza chinyezi ndi zinthu zina zowononga kuti zisalowe pamwamba ndikuwononga. Izi zimapangitsa zokutira za ufa kukhala zoyenera kugwiritsidwa ntchito m'malo ovuta kapena owononga, monga zam'madzi kapena mafakitale.

Mitundu ya zokutira pulasitiki ufa

Chimodzi mwa zinthu zofunika kwambiri zomwe zimatsimikiza ubwino ndi magwiridwe antchito a zophimba za ufa wa pulasitiki ndi kapangidwe ka ufawo. Zophimba zambiri za ufa zimapangidwa kuchokera ku ma polima a thermoplastic , omwe amapanga mapeto olimba komanso olimba panthawi yokonza. Ma polima odziwika bwino omwe amagwiritsidwa ntchito mu zophimba za ufa wa thermoplastic ndi monga Polyethylene, polypropylene , polyester, polyvinyl chloride, chlorinated polyether, polyamide, cellulose, polyester, ndi zina zotero.

1. Chophimba cha ufa wa polyethylene chili ndi ntchito yabwino kwambiri yolimbana ndi dzimbiri, kukana mankhwala, kutchinjiriza magetsi bwino komanso kukana kuwala kwa UV. Chingagwiritsidwe ntchito pa matanki a mankhwala, ma impeller, mapampu, makoma amkati mwa mapaipi, zipolopolo za pamwamba, mapepala achitsulo, maukonde amkati mwa firiji, zida zamagalimoto, ndi zina zotero. Cholakwika chake ndi mphamvu yochepa yamakina komanso kusagwira bwino ntchito kwa substrate.

2. Chophimba cha ufa wa nayiloni , chomwe chimadziwikanso kuti polyamide, chimakhala ndi malo osungunuka kwambiri chifukwa cha kugwirizana kwa haidrojeni pakati pa maatomu a chlorine pa unyolo wa molekyulu ndi maatomu a haidrojeni pa zigawo za unyolo woyandikana nawo. Nayiloni ili ndi mphamvu zambiri zamakaniko, kukana kugwedezeka, kuuma, kukana kutopa, kukana kupsinjika kochepa, kuyamwa fumbi kochepa, ndi zina zotero. Ingagwiritsidwe ntchito pazinthu zapadera monga ma impeller amadzi, zida zamakina a nsalu, zida zoyambira injini ya dizilo, ma propeller a sitima, mawilo a magalimoto, mabulaketi a njinga zamoto, makina a zaulimi, zida zomangamanga ndi zamasewera. Chophimba cha ufa wa nayiloni sichili ndi poizoni, sichikoma, sichimalimbana ndi madzi amchere, nkhungu ndi mabakiteriya, ndipo ndi choyenera kupopera zida zamafakitale azakudya, mapaipi amadzi akumwa ndi ma phukusi azakudya.

3. Polyvinyl chloride powder ndi imodzi mwa ma polima omwe amagwiritsidwa ntchito kwambiri omwe amatha kupangidwa mochuluka pambuyo pa mafakitale. Ili ndi kukana kosungunulira kwambiri, kukana kwa dzimbiri kwamadzi ndi asidi, kukana kukana, kukana kutsitsi kwa mchere, kumatha kuletsa kuipitsidwa kwa chakudya, ndipo kumakhala ndi kutchinjiriza kwakukulu kwa kupopera mbewu mankhwalawa ndi electrostatic. Amagwiritsidwa ntchito kwambiri popaka mapanelo azitsulo, mipando yachitsulo, zida zamankhwala, etc.

4. Fluororesin ufa wokutira ukhoza kukonzedwa kuchokera ku ma polima osiyanasiyana a fluorinated, monga polytetrafluoroethylene (PTFEpolytrifluorochlorethylene (PTFCE), polyvinylidene fluoride (PVDF), etc. PTFE ali ndi malo osungunuka kwambiri mpaka 327 ℃ ndipo angagwiritsidwe ntchito kwa nthawi yayitali -250 ~ 250 ℃. Ilinso ndi kukana kwa dzimbiri kwabwino kwambiri, ngakhale mu aqua regia, ntchito yabwino kwambiri ya dielectric, yotsika kwambiri komanso yodzipangira mafuta, motero imadziwika kuti "mfumu ya pulasitiki". Amagwiritsidwa ntchito kwambiri mu petroleum, zokutira mankhwala odana ndi dzimbiri, kusindikiza, kunyamula zinthu zothira mafuta, zida zamagetsi ndi zamagetsi, njanji zoyambira zombo ndi zokutira zopanda ndodo. PTCE ndiyotsika mtengo kuposa PTFE, ndipo kutentha kwa processing kumatha kuchepetsedwa. Chophimbacho chingagwiritsidwe ntchito kwa nthawi yayitali pansi pa 130 ℃. Kutha kwake kukana alkali ndi fluor

Ponseponse, zokutira za pulasitiki za ufa ndi njira yosinthika komanso yothandiza yomwe imapereka maubwino ndi maubwino angapo kuposa zokutira zamadzimadzi. Kuchokera kuzinthu zokonda zachilengedwe kupita ku dzimbiri komanso kukana kwa nyengo, kupaka ufa ndi chisankho chodziwika bwino pamafakitale ndi ntchito zosiyanasiyana.

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