I-Thermoplastic Powder Paint - Umhlinzeki, Unjiniyela, Izinzuzo kanye Nobubi

Umthengisi

China PECOAT® ekhethekile ekukhiqizeni nasekuthekeliseni kwamanye amazwe upende we-thermoplastic powder, umkhiqizo une i-polyethylene powder upende, pvc powder upende, inayiloni powder upende, futhi umbhede omanzi imishini yokucwilisa.

Umlando Wokuthuthukiswa Kwepende ye-Thermoplastic Powder

Selokhu kwaba nenkinga kawoyela ngeminyaka yawo-1970s, ukumbozwa ngempushana kuye kwakhula ngokushesha ngenxa yokongiwa kwezinsizakusebenza, ubungane bemvelo, nokufaneleka kokukhiqizwa okuzenzakalelayo. I-Thermoplastic powder peint (ebuye ibizwe ngokuthi i-thermoplastic powder coating), enye yezinhlobo ezimbili eziyinhloko zikapende oyimpushana, yaqala ukuvela ngasekupheleni kwawo-1930.

Ngawo-1940, ngokuthuthukiswa kwemboni ye-petrochemical nezinye izimboni, ukukhiqizwa kwama-resin afana ne-polyethylene, i-polyvinyl chloride, ne-polyamide resin kwanda ngokushesha, okuholela ocwaningweni lopende lwe-thermoplastic powder. Ekuqaleni, abantu babefuna ukusebenzisa ukuphikiswa okuhle kwamakhemikhali e-polyethylene ukuze bawufake embotsheni yensimbi. Kodwa-ke, i-polyethylene ayincibiliki ku-solvents futhi ayikwazi ukufakwa ezimbotsheni ezisekelwe ku-solvent, futhi izinamathiselo ezifanele azitholakalanga ukunamathela ishidi le-polyethylene odongeni lwangaphakathi lwensimbi. Ngakho-ke, ukufuthwa kwelangabi kwakusetshenziselwa ukuncibilika nokumboza impushana ye-polyethylene endaweni yensimbi, ngaleyo ndlela kuvule ukuqala kopende lwempuphu ye-thermoplastic.

I-fluidized bed coating, okwamanje okuyindlela esetshenziswa kakhulu futhi evamile yokumboza ngopende we-thermoplastic powder, yaqala ngendlela yokufafaza eqondile ngo-1950. Kule ndlela, i-resin powder ifafazwa ngokulinganayo endaweni eshisayo ye-workpiece ukuze yakhe ukumboza. Ukuze kwenziwe indlela yokufafaza ibe ngokuzenzakalela, indlela yokumboza umbhede omanzi yavivinywa ngempumelelo eJalimane ngo-1952. Indlela yokumboza umbhede omanzi isebenzisa umoya noma igesi engasebenzi ephephezelwa epuleti elivuvukalayo elinezimbotshana elingaphansi kombhede omanzi ukuze kwakheke ukusabalalisa ngokulinganayo. ukugeleza komoya okuhlakazekile, okwenza i-powder embhedeni omanzi igeleze ibe yisimo esiseduze noketshezi, ukuze i-workpiece ingasatshalaliswa ngokulinganayo ebusweni bomsebenzi futhi ithole indawo ebushelelezi futhi eyisicaba.

Izinhlobo Nezinzuzo Nezingozi Zokupenda Kwe-Thermoplastic Powder

Njengamanje, upende we-thermoplastic powder uhlanganisa izinhlobo ezahlukene ezifana ne-polyethylene /i-polypropylene i-powder coatings, i-polyvinyl chloride powder coatings, okokunamathela okuyimpushana enayiloni, i-polytetrafluoroethylene powder coatings, kanye ne-thermoplastic polyester powder coatings. Zisetshenziswe kakhulu ekuvikelweni kwethrafikhi, ekuvimbeleni ukugqwala kwamapayipi, nasezintweni ezahlukahlukene zasendlini.

polyethylene (PE) kanye ne-polypropylene (PP) i-powder coating

I-Polyethylene ne-polypropylene kwakuphakathi kwezinto zokuqala ezasetshenziswa kupende lwempuphu ye-thermoplastic futhi kwakuyizinto ezimbili ezibaluleke kakhulu. ama-polymers we-thermoplastic ekhulwini elidlule. Njengamanje, kokubili i-high-density kanye ne-low-density polyethylene isetshenziswe emkhakheni we-thermoplastic. I-polyethylene ene-high-density ivame ukusetshenziswa emkhakheni wezimboni, kuyilapho i-polyethylene ephansi kakhulu isetshenziswa emkhakheni wezomphakathi.

Njengoba iketango lamangqamuzana e-polyethylene ne-polypropylene kuyisibopho se-carbon-carbon, kokubili kunezici ezingezona ze-olefin, ngakho-ke i-polyethylene kanye ne-polypropylene powder coatings zinokumelana okuhle kwamakhemikhali futhi zisetshenziswa kabanzi emkhakheni wokulwa nokubola. Asetshenziselwa ukuvikela, ukugcina, kanye neziqukathi zokuthutha, amapayipi, namapayipi kawoyela amakhemikhali kanye nezinto ezisebenza ngamakhemikhali. Njengento ye-inert, lolu hlobo lopende lwempushana lunamatheli kahle ku-substrate futhi ludinga ukwelashwa okuqinile kwendawo engaphansi, noma ukusetshenziswa kwe-primer noma ukuguqulwa kwe-polyethylene nezinye izinto.

Advantage 

I-polyethylene resin iwupende osetshenziswa kakhulu futhi okhiqizwa i-thermoplastic powder.

Inezinzuzo ezilandelayo:

1. Ukumelana namanzi okuhle kakhulu, ukumelana ne-asidi ne-alkali, nokumelana namakhemikhali;
2. Ukufakwa kahle kukagesi kanye nezakhiwo zokushisa ezishisayo;
3. Ukuqina okuhle kakhulu, ukuguquguquka, kanye nokumelana nomthelela;
4. Ukumelana okuhle kwezinga lokushisa eliphansi, kungagcina amahora angama-400 ngaphandle kokuqhekeka ku -40 ℃;
5. Intengo ehlobene yezinto zokusetshenziswa iphansi, ayinabo ubuthi futhi ayihambisani nemvelo.

Ukungalungi

Kodwa-ke, ngenxa yezakhiwo ze-substrate polyethylene, upende we-polyethylene powder nawo unezinkinga ezithile ezingenakugwenywa:

1. Ukuqina, ukumelana nokugqoka, namandla omshini wokumboza ampofu kakhulu;
2. Ukunamathela kokugqoka kumpofu futhi i-substrate idinga ukuphathwa ngokuqinile;
3. Ukumelana nesimo sezulu esibi, okuvame ukucindezeleka ukuqhekeka ngemva kokuchayeka emisebeni ye-ultraviolet;
4. Ukumelana nezinga lokushisa eliphansi kanye nokumelana nokushisa okumswakama.

I-Polyvinyl chloride (PVC) i-powder coating

I-Polyvinyl chloride (PVC) i-polymer e-amorphous equkethe inani elincane lamakristalu angaphelele. Iningi PVC imikhiqizo ye-resin inesisindo samangqamuzana phakathi kuka-50,000 no-120,000. Nakuba high isisindo samangqamuzana PVC ama-resin anezakhiwo ezingcono zomzimba, isisindo esiphansi samangqamuzana PVC ama-resin ane-viscosity encibilikayo ephansi kanye nezinga lokushisa elithambile afaneleka kakhulu njengezinto zopende we-thermoplastic powder.

PVC yona ngokwayo iyimpahla eqinile futhi ayikwazi ukusetshenziswa njengento yopende oyimpushana iyodwa. Lapho wenza ama-coatings, inani elithile le-plasticizer lidinga ukungezwa ukulungisa ukuguquguquka kwe PVC. Ngasikhathi sinye, ukungeza ama-plasticizer kunciphisa amandla ezinto eziqinile, i-modulus, nobulukhuni. Ukukhetha uhlobo olufanele kanye nenani le-plasticizer kungafinyelela ibhalansi oyifunayo phakathi kokuguquguquka kwezinto ezibonakalayo nobulukhuni.

Ukuze uthole okuphelele PVC ifomula kapende oyimpushana, iziqinisi nazo ziyingxenye ebalulekile. Ukuxazulula ukuzinza okushisayo kwe PVC, usawoti oxubile we-calcium ne-zinc ngokuzinza okuhle kokushisa, i-barium kanye cadinsipho ye-mium, i-mercaptan tin, i-dibutyltin derivatives, i-epoxy compounds, njll. yenziwe. Yize ama-lead stabilizer enokuqina okuhle kakhulu kwe-thermal, akhishiwe emakethe ngenxa yezizathu zemvelo.

Njengamanje, imikhiqizo esetshenziswa kakhulu PVC upende oyimpushana yizinto zikagesi ezahlukahlukene zasendlini kanye namaracks omshini wokuwasha izitsha. PVC imikhiqizo inokumelana okuhle nokuwasha kanye nokumelana nokungcoliswa kokudla. Bangakwazi futhi ukunciphisa umsindo wezindawo zokubeka izitsha. Ama-dish racks ahlanganiswe PVC imikhiqizo ngeke yenze umsindo lapho ibeka i-tableware. PVC i-powder coatings ingasetshenziswa ngokwakhiwa kombhede owenziwe ngamanzi noma ngokufafaza nge-electrostatic, kodwa idinga osayizi bezinhlayiyana zempushana. Kufanele futhi kuqashelwe ukuthi PVC upende oyimpuphu ukhipha iphunga elimnandi ngesikhathi sokucwiliswa futhi uyingozi emzimbeni womuntu. Ukusetshenziswa kwazo sekuqalile ukuvinjelwa emazweni angaphandle.

Advantage

Izinzuzo zopende we-polyvinyl chloride powder yilezi:

1. Amanani aphansi wempahla eluhlaza;
2. Ukumelana okuhle nokungcola, ukumelana nokugeza, nokumelana nokugqwala;
3. Amandla aphezulu emishini kanye nokusebenza okuhle kokufakwa kukagesi.

Ukungalungi

Ububi bepende ye-polyvinyl chloride powder yilezi:

1. Umehluko wezinga lokushisa phakathi kwezinga lokushisa elincibilikayo kanye nezinga lokushisa lokubola kwe PVC i-resin incane. Phakathi nenqubo yokumboza, izinga lokushisa lidinga ukulawulwa ngokuqinile ukuze kuvinjelwe ukumbozwa ukubola.
2. I-coating ayimelani nama-hydrocarbons anephunga elimnandi, ama-ester, ama-ketone, nezinyibilikisi ezine-chlorine, njll.

I-Polyamide (inayiloni) i-powder coating

I-Polyamide resin, evame ukubizwa ngokuthi inayiloni, iyinhlaka ye-thermoplastic esetshenziswa kakhulu. Inayiloni inezici ezinhle kakhulu ezihlanganisayo, ubulukhuni obuphezulu, nokumelana nokugqoka okuvelele. Ama-coefficients aguquguqukayo futhi amile okuhlanganisa enayiloni mancane, futhi anokugcoba. Ngakho-ke, asetshenziswa ekuthwaleni kwemishini yendwangu, amagiya, ama-valve, njll. Izembatho ze-nylon ze-powder zine-lubricity enhle, umsindo ophansi, ukuguquguquka okuhle, ukunamathela okuhle kakhulu, ukumelana kwamakhemikhali, nokumelana ne-solvent. Zingasetshenziswa njengengubo efanelekile engagqoki futhi yokugcoba ukuze ithathe indawo yethusi, i-aluminium, cadi-mium, insimbi, njll. Ukuminyana kwefilimu yokumboza inayiloni kungu-1/7 kuphela wethusi, kodwa ukumelana kwayo nokugqoka kuphindwe kasishiyagalombili kunethusi.

Izembatho zenayiloni eziyimpushana azinabuthi, azinaphunga futhi azinambitheki. Ngokuhambisana neqiniso lokuthi azithinteki ekuhlaselweni yisikhunta noma ukukhuthaza ukukhula kwamagciwane, asetshenziswa ngempumelelo embonini yokucubungula ukudla ukuze amboze izingxenye zemishini nezinhlelo zamapayipi noma ukumboza izindawo ezihlangana ngqo nokudla. Ngenxa yokumelana kahle kwamanzi namanzi anosawoti, ibuye isetshenziselwe ukumboza izingxenye zomshini wokuwasha, njll.

Indawo ebalulekile yesicelo sezingubo ze-nylon powder ukugqoka izinhlobo ezihlukahlukene zokubamba, hhayi nje ngenxa yokuthi zinezici ezibalulekile ezifana nokumelana nokugqoka kanye nokumelana nokuqala, kodwa futhi ngenxa yokuthi ukuqhutshwa kwazo okuphansi kokushisa kwenza izibambo zizizwe zithambile. Lokhu kwenza lezi zinto ezisetshenziswayo zifaneleke kakhulu izibambo zamathuluzi okugcoba, izibambo zeminyango, namasondo okuqondisa.

Uma kuqhathaniswa nezinye izinto zokumboza, amafilimu anenayiloni enamathela anokumelana namakhemikhali ampofu futhi awafanele ukusetshenziswa ezindaweni zamakhemikhali njengama-acids nama-alkali. Ngakho-ke, amanye ama-epoxy resins ngokuvamile anezelwa njengezilungisi, ezingakwazi nje ukuthuthukisa ukumelana nokugqwala kwezingubo zenayiloni kodwa futhi zithuthukise amandla okubopha phakathi kwefilimu yokumboza ne-substrate yensimbi. Impushana yenayiloni inezinga eliphezulu lokumunca amanzi futhi isengozini yomswakama ngesikhathi sokwakhiwa nokugcinwa. Ngakho-ke, idinga ukugcinwa ngaphansi kwezimo ezivaliwe futhi akufanele isetshenziswe isikhathi eside ngaphansi kwezimo ezinomswakama nezishisayo. Esinye isici okufanele siqaphele ukuthi isikhathi se-plasticizing se-nylon powder sifushane, futhi ngisho nefilimu yokugqoka engadingi i-plasticizing ingafinyelela umphumela oyifunayo, okuyisici esiyingqayizivele se-nylon powder.

I-Polyvinylidine fluoride (PVDF) upende oyimpuphu

Okumele kakhulu ukumelana nesimo sezulu kupende lwempuphu ye-thermoplastic i-polyvinylidene fluoride (PVDF) powder coating. Njenge-ethylene polymer emelana kakhulu nesimo sezulu, i-PVDF inokumelana okuhle komshini nomthelela, ukumelana nokugqokwa okuhle kakhulu, ukuguquguquka okuvelele nobulukhuni, futhi ingamelana namakhemikhali amaningi agqwalayo njengama-asidi, ama-alkali, nama-oxidants aqinile. Ngaphezu kwalokho, ayincibiliki kumakhemikhali amakhemikhali avame ukusetshenziswa embonini yokumboza, okubangelwa amabhondi e-FC aqukethwe ku-PVDF. Ngesikhathi esifanayo, i-PVDF iphinde ihlangabezane nezidingo ze-FDA futhi ingasetshenziswa ekucubunguleni ukudla futhi ingathintana nokudla.

Ngenxa ye-viscosity yayo ephezulu yokuncibilika, i-PVDF ijwayele ukungena emigodini yokunamathisela kanye nokunamathela kwensimbi okungekuhle embotsheni yefilimu emincane, futhi intengo yezinto ezibonakalayo iphezulu kakhulu. Ngakho-ke, ezimweni eziningi, ayisetshenziswa njengesisekelo sodwa sezinto zokumboza i-powder. Ngokuvamile, cishe u-30% we-acrylic resin yengezwa ukuthuthukisa lezi zakhiwo. Uma okuqukethwe kwe-acrylic resin kuphezulu kakhulu, kuzothinta ukumelana nesimo sezulu sefilimu yokugqoka.

Isicwebezelisi sefilimu enamathelayo ye-PVDF iphansi kakhulu, ngokuvamile icishe ibe ngu-30±5%, ekhawulela ukusetshenziswa kwayo ekuhlobiseni kwendawo. Njengamanje, isetshenziswa kakhulu njengengubo yokwakha yezakhiwo ezinkulu, esetshenziswa kumapulangwe ophahleni, ezindongeni, namafreyimu ewindi e-aluminium extruded, anokumelana nesimo sezulu esihle kakhulu.

Sebenzisa Ividiyo