I-Polyvinyl Chloride (PVC) I-Powder Coatings - Thuthukisa, Isicelo, Ukuhlinzeka

Leli phepha lidingida ukwakhiwa kwe-polyvinyl chloride (PVC) i-powder coatings ekhaya naphesheya, yethula ifomula eyisisekelo, ubuchwepheshe bokulungiselela kanye nenkomba yokusebenza ye PVC i-powder coatings, futhi yenza isingeniso esidingekayo ekusetshenzisweni kwayo ekunqandeni ukugqwala nokuhlobisa kwamapayipi ensimbi.

Isibikezelo

I-Powder coating iwuhlobo lwempushana eqinile engu-100%. Ihluke ekuhlanganiseni okujwayelekile okusekelwe ku-solvent kanye ne-soluble yamanzi, hhayi ukuncibilika noma amanzi njengendlela yokusabalalisa, kodwa ngosizo lomoya njengendlela yokusabalalisa. Esikhathini esidlule decade, ohulumeni bomhlaba ukukhiqiza ezinengilazi izimboni kanye namabhizinisi okubangelwa ukungcoliswa kwemvelo okwandisa ukunakwa, kwaqinisa imingcele ukusetshenziswa ezincibilikisayo. Ekupheleni kweminyaka engamashumi ayisishiyagalombili Euri-ope kanye ne-United States ekukhiqizeni okunamathelayo, ekukhiqizeni, ekusetshenzisweni kokwakhiwa kuvinjelwe ngokuphelele ukusetshenziswa kwezincibilikizo nezikhithi, ezinye izingxenye ze-United States futhi ngendlela yemithetho yamemezela umthetho wokunciphisa ukusetshenziswa kwe-solvent, izinhlinzeko zabaningi njenge-66 izihloko, kanye Euri-ope kanye ne-United States babeka phambili inhloso "ezintathu ze-E":

(1) Ukuguqulwa Kwemvelo
(2) Ukonga Amandla
(3) Inzuzo Yezomnotho

Kulo mongo, izimbotshana zempushana ziye zathuthuka ngokushesha ngenxa yemvelo yazo yokungangcoli, ukusetshenziswa okuphezulu kwezinto ezingavuthiwe, kanye nezinzuzo eziningi. Ngokukhethekile eWestern Europe kanye neNyakatho Melika, izinga lokukhula lonyaka le-powder coating lifinyelela ku-10%. Ngaphezu kwalokho, eminyakeni yamuva nje, i-China iphinde yabona izinga lokukhula elimangalisayo lonyaka le-100% lezingubo zempushana.

I-Polyvinyl chloride (PVC) Ama-Powder Coatings athandwa ikakhulukazi abasebenzisi ngenxa yezakhiwo zawo eziyingqayizivele zokuhlobisa kanye nesimo sezulu nokugqwala. Okwamanje, PVC i-powder coatings asetshenziswa kakhulu emikhakheni eyahlukene okuhlanganisa ukuvikelwa kwekhebula ngepayipi lensimbi, ipayipi elimelana nokugqwala kwamakhemikhali, ipayipi lokuthuthwa kwendle, amapayipi emboni kaphethiloli namakhemikhali, izimpawu zomgwaqo, izigxobo zokukhanyisa, isitimela somgwaqo omkhulu njll.

Inqubo Yokuthuthukisa

1.Ifomula eyisisekelo ye PVC i-powder coating

PVC i-powder coating yenziwe PVC i-resin njengento eyisisekelo ene-plasticizer, stabilizer, filler nezinye izithasiselo. Ifomula eyisisekelo iboniswa kuThebula (Umbala Omhlophe).

2.Ukulungiselela Ubuchwepheshe be PVC i-powder coating

Indlela yokulungiselela ye PVC i-powder enamathela, inqubo yayo iboniswa ku-Figure.

3.Imiphumela Yokuhlola Ukuhlaziywa Kokusebenza Komkhiqizo

Ngemva kwe-repeucwaningo olulinganiselwe nokuthuthukiswa, ukuhlola, futhi kuqhathaniswa nemikhiqizo engenisiwe, okunye kokusebenza kwe PVC I-powder coating ekugcineni ifinyelele noma yedlula ukusebenza kwemikhiqizo evela kwamanye amazwe yohlobo olufanayo, bheka ithebula.

Isicelo se PVC Ipayipi Lensimbi Eliboshwe Ngempushana

PVC ifilimu yokumboza i-powder iyisimo se-thermoplastic semi-hard. Uma kuqhathaniswa ne-polyethylene, izinga lokushisa elincibilikayo kanye nomehluko wokushisa wokubola kuncane, ngakho-ke uma usetshenziswa kufanele unake kakhulu izinga lokushisa lokubhaka nesikhathi. Ngenxa yokunamathela kwayo okungalungile, ngaphambi kokucwiliswa, ngokuvamile kudingeka kuhlanganiswe ungqimba lwe-primer ukuze kwandiswe ukunamathela kokunamathela.

1.Izakhiwo eziyinhloko zokugqoka

• PVC imikhiqizo ye-powder enamathela ihlanganisa: izinto zokuhlobisa zasendlini kanye nendwangu engangeni manzi, amathangi amakhemikhali, iphansi, ifilimu yokupakisha, ipayipi lengadi kanye nokufakwa kwezintambo.
• Izindlela zokucubungula zisebenzisa ukuxuba okomile, ukubumba umjovo, ukubunjwa kwe-extrusion hollow blow, i-calendering, kanye umbhede omanzi ukucwilisa.
• I-flame retardant (ingeziwe i-flame retardant)
• Ukumelana namanzi namakhemikhali, ukumelana nokuguga okuhle.

2.Indlela yokwakha eyinhloko kanye nebanga lesicelo

PVC i-powder coating isetshenziswa kakhulu kuma-mesh ensimbi, ishede lokugcina elibandayo, ifenisha yensimbi, ipayipi lensimbi nokunye. Inqubo yokumboza ngokuyinhloko imi kanje:

(1) Ukwelashwa kwangaphambili: ukwelashwa kwe-phosphate - ukususwa kokugqwala, i-phosphating.
(2) I-Primer coating: Gcoba i-primer, ngemva kokomisa, ubukhulu befilimu ye-primer buyi-5-10μm,
(3) ukufafaza nge-electrostatic noma ukucwiliswa kombhede owenziwe ngamanzi.
4. izinga lokushisa preheating:230-290℃,10min, ifilimu ukujiya: 500um;
Noma 290 ℃, 5min ngaphandle preheating, ifilimu ukujiya 200um.

PVC ipayipi lensimbi elihlanganisiwe liwusizo ekulweni nokugqwala kwe-petrochemical, liwusizo ku-highway guardrail, liwusizo esigxotsheni, ngemva kweminyaka eminingi yemiphumela yohlelo lokusebenza libonisa ukuthi PVC ukumelana namanzi enamathela, ukumelana nokuguga komkhathi kuhle, ngokuvamile kutholakala iminyaka engaphezu kwengu-15, kuqeda inkathazo yopende webhulashi kaningi, ukuqhathanisa okuphelele kwezindleko zayo eziphansi, ezisetshenziswa kumakhemikhali e-anti-corrosion, kungasetshenziswa futhi iminyaka engaphezu kwemihlanu, ukuze umsebenzisi axazulule inkinga ye-anti-corrosion.