Chii chinonzi PFA zvinhu? Kuongorora kwakadzama uye mamiriro ekushandisa
Muindasitiri yemakemikari uye mune akawanda anoda maindasitiri ekushandisa, kusarudzwa kwechinhu chakakodzera kwakakosha - chii chinonzi PFA? Mubvunzo uyu unowanzouya mupfungwa dzenyanzvi dzinoda zvinhu zvinopikisa kupisa kwakanyanya uye kuora. Muchinyorwa chino, isu tinopa yakadzama mhedziso yemhando uye zvivakwa zvePFA zvinhu uye yavo yakawanda yakawanda yemamiriro ekushandisa.
Chii chinonzi PFA?
PFA (Perfluoroalkoxy) is a fluoropolymer that belongs to the polytetrafluoroethylene (PTFE) family.PFA material inowedzera kufambiswa kwezvinhu kuburikidza nekuisa alkoxy substituents, uye ine thermoformability iri nani uye yakakwirira mechanical simba zvichienzaniswa nePTFE.Makemikari emiti yePFAPTFE ari nani, asi akafanana neayo ePFAPTFE akafanana neayo ePFAPTFE. PTFE, asi nekuda kwekuita kwayo zvirinani uye kubuda pachena, PFA ine mukana mune zvakawanda zvikumbiro panodiwa kuumbwa chaiko.
Zvinhu zvakakosha zvePFA Zvishandiso
PFA zvinhu zvinoshandiswa zvakanyanya kune yavo yakanakisa makemikari kuramba uye kugadzikana kwekupisa. Pazasi pane zvimwe zvakakosha zvePFA zvinhu:
High Temperature Resistance: PFA zvinhu zvinokwanisa kuchengetedza zvimiro zvavo zvemuviri uye kemikari pakupisa kwakanyanya, kusvika kune yakanyanya tembiricha yebasa ye260 ° C. Izvi zvinoita kuti PFA ive sarudzo yakanakisa yezvishandiso zvinoda kugadzikana kwekushisa kwakanyanya.

Chemical Resistance: PFA inoratidza kuramba kwakanyanya kunenge ese makemikari, anosanganisira akasimba asidhi, mabhesi uye organic solvents. Izvi zvinoita kuti inyanyozivikanwa muindasitiri yemakemikari, kunyanya mumapaipi nemidziyo inotakura zvinwiwa zvinoparadza uye magasi.

Yakaderera kukweshera uye isina-tsvimbo zvivakwa: PFA yakaderera coefficient yekupokana uye isiri-tsvimbo zvivakwa zvinoita kuti ive yakanaka mumashandisirwo apo panofanirwa kudzikisira kupfeka uye kudzivirira kunamatira, senge mumajasi uye zvisimbiso.

Kuiswa kwemagetsi: PFA ine yakanakisa magetsi ekudzivirira zvivakwa, izvo zvinoita kuti ive yakakosha kune mashandisirwo mumaindasitiri emagetsi nemagetsi.

Nzvimbo dzekunyorera PFA
Nekuda kwezvimiro zvayo zvakasiyana, PFA zvinhu zvinoshandiswa zvakanyanya mumaindasitiri akati wandei. Aya anotevera ndemamwe enzvimbo huru dzekushandisa:
Kemikari uye petrochemical midziyo: Nekuda kwekunaka kwayo kwemakemikari kuramba, PFA inowanzoshandiswa kugadzira maramba epombi, mavharuvhu, pombi nemidziyo. Zvishandiso izvi zvinoda kupikisa kwemakemikari zvakanyanya kana uchibata zvinwiwa zvinoparadza uye magasi, uye zvinhu zvePFA zvinokwanisa kuwedzera hupenyu hwesevhisi yemidziyo.

Semiconductor Manufacturing: PFA yakakwira kuchena uye kusagadzikana kwekuora kunoita kuti ive chinhu chakakosha mumichina yekugadzira semiconductor, senge pombi nemidziyo inoshandiswa mukugadzira kemikari vapor deposition (CVD) masisitimu.

Mishonga Yezvokurapa: Munharaunda yezvokurapa, PFA inowanzoshandiswa mukugadzira michina ine yakakwirira biocompatibility zvinodiwa, zvakadai se catheters uye sensor housings.Ikemikari inertness uye kugadzikana kwekushisa kwezvinhu zvePFA zvinovimbisa kuchengetedzwa uye kuvimbika kwezvigadziri izvi.

Mhedziso
Ongororo iri pamusoro inotipa mufananidzo wakajeka wekuti PFA chii.PFA ndeye fluoropolymer zvinhu izvo zvakakosha mune akati wandei maindasitiri.Iyo yakanyanya kupisa tembiricha, kushomeka kwemakemikari, kushomeka kwekukweshera, uye magetsi ekudzivirira emagetsi anoita kuti ibatsire mumhando dzakasiyana dzekushandisa mumakemikari, zvemagetsi, uye zvekurapa. Kana iwe uchitsvaga chinhu chinogona kukunda mumamiriro akanyanya, PFA zvirokwazvo isarudzo yakakodzera kufunga.