PTFE muaj adhesion, yooj thiab anti-stick zog

PTFE hloov polyphenylene sulfide (PPS): PPS muaj qhov tsis zoo ntawm kev ua haujlwm tsis zoo thiab kev ua haujlwm nyuaj. Txij li thaum lub inert nto ntawm PTFE yog ib qho nyuaj rau daim ntawv cog lus nrog PPS, los ntawm lub view ntawm kev txhim kho cov nto affinity, Nyiv siv ib tug solubilizer los txo cov interfacial nro ntawm ob theem, thiab siv cov cuab yeej ntawm kev sib tov ntawm ib tug siab shear tus nqi los ua tus kev tsis sib haum xeeb. Qhov system alloying.

Kev siv PPS hmoov thiab sib tov tom qab sib tsoo, ntxiv PTFE hmoov los ua cov txheej, kom lub txheej muaj kev sib txhuam zoo heev thiab hnav kev ua tau zoo, adhesion, yooj thiab los tiv thaiv, qhov sib tov yog feem ntau ethanol, dej, dioxane Sodium dodecyl sulfonate system. . PTFE / PPS alloy daws qhov teeb meem ntawm siab yaj txaus tus nqi ntawm PPS thiab nyuaj rau kev molding ncaj qha. Nws tseem tuaj yeem tuav cov khoom siv kho tshuab siab tshaj 300 degree. Nws yog tsuas yog siv rau corrosion-resistant twj, li qub, gaskets, thiab dynamic seals. Bushings, automotive engine valve npog, chromatograph zawv zawg seals thiab cov lus qhia, thiab lwm yam.

PTFE-modified polyamide (PA): PA ntxiv PTFE yog tsuas yog los txhim kho nws cov zawv zawg zog. Raws li cov ntaub ntawv, thaum PTFE sau tus nqi ntau dua 10 feem pua, qhov kev sib txhuam txo thiab hnav tsis kam ntawm PA yog pom tseeb txhim kho. Piv txwv li, ntxiv PTFE tib lub sij hawm nyob rau hauv lub PA system Nws yuav siv tau nyob rau hauv thiab ib feem sib xws nrog cov linear tsawg ntom polyethylene / propylene-styrene copolymer 5 feem pua, PTFE 10 feem pua, cov synergistic nyhuv ntawm ob yog zoo heev, seb. nws yog los ntawm kev txhim kho kev ua haujlwm ntawm cov khoom siv sib xyaw lossis txo tus nqi, Ob leeg yog cov kev hloov kho zoo tshaj plaws.

PTFE hloov kho polyimide (PI): Raws li hom tshiab ntawm engineering yas, PI feem ntau yog siv hauv kev lag luam aerospace. Nyob rau hauv xyoo tas los no, nws daim ntawv thov tau txuas ntxiv mus rau electronics, tsheb thiab lwm yam kev lag luam. Cov ntaub ntawv sib txawv txawv teb chaws muaj li ntawm 33 feem pua ​​​​PTFE, 2 feem pua ​​​​cov pa roj carbon dub thiab 65 feem pua ​​​​soluble PI yog cov khoom siv roj tsis muaj roj nrog kev sib txhuam zoo heev thiab hnav cov khoom. Piv txwv li, cov tuam txhab txawv teb chaws RTP siv cov thermoplastic polyimide thiab PTFE los sib tov lossis ntxiv lwm yam hnav thiab tsim kua muag Lub RTP4200 series ntawm cov khoom tau tsim los ntawm cov cuab yeej siv tshuab thiab cov khoom ntim, uas tuaj yeem siv rau hauv cov khoom siv hauv tsheb hauv qab, cov khoom siv dav hlau thiab cov khoom siv hluav taws xob hauv chaw ua haujlwm.

PTFE hloov polyetheretherketone (PEEK): PEEK cov khoom siv dav siv hauv aerospace, hluav taws xob thiab hluav taws xob. Cov chav tshawb fawb hauv tsev siv PEEK cov khoom siv zoo thiab cov cua sov ua haujlwm siab, PTFE tsis tshua muaj coefficient ntawm kev sib txhuam, thiab cov khoom siv ntxiv los txhim kho cov txheej txheem ua haujlwm, npaj PEEK / PTFE blends los ntawm melting blending, thiab siv iav fiber ntau / carbon fiber ntau sib xyaw ua ke txhim kho nws cov khoom siv kho tshuab, tsim cov khoom siv nrog cov txheej txheem zoo thiab kev txhaj tshuaj molding yam tsis muaj roj lubrication, kub tsis kam thiab tsis muaj kev sib txhuam, uas tuaj yeem siv los ua qhov kub ntawm lub cav.

PTFE hloov kho polymetaphenylene isophthalamide (PMIA): PMIA yog ib qho polyamide uas nws cov khoom siv kho mob thiab kub tsis kam yog ntau dua li lwm cov aliphatic polyamides. Txhawm rau txhim kho cov khoom tribological ntawm cov khoom siv ntxiv, nws yog qhov yuav tsum tau siv lubricity. Fillers txhim kho kev sib txhuam thiab hnav cov khoom. Nyob rau hauv Tuam Tshoj, high-speed mixing ntaus ntawv yog siv tag nrho cov PMIA hmoov PTFE, thiab cov qauv yog tau los ntawm compression casting. Kev sim qhia tau hais tias thaum PTFE cov ntsiab lus yog 20 feem pua, qhov sib tov muaj qis coefficient ntawm kev sib txhuam.

PTFE modified linear low density polyethylene (LLDPE): Kev siv PTFE los hloov LLDPE tuaj yeem ua kom nws lub neej ntev. Yog hais tias txawv teb chaws cov ntaub ntawv siv -ray hluav taws xob hmoov PTFE, tib lub sij hawm kho nrog silane coupling tus neeg saib xyuas, siv nto-kho PTFE Tom qab sau thiab hloov LLDPE, nws tsis tau tsuas yog txhim kho lub adhesion ntawm PTFE thiab LLDPE, tab sis kuj txhim kho cov neeg kho tshuab zog. qhov sib tov. Cov txheej txheem ua tau zoo thiab UV ruaj khov ntawm LLDPE tau zoo dua los ntawm kev sim.

Tsis tas li ntawd, ntau qhov kev tshawb fawb tau ua tiav ntawm kev sib xyaw ntawm PTFE thiab lwm yam khoom siv yas hauv tsev thiab txawv teb chaws. Piv txwv li, kev sib xyaw ntawm PTFE thiab amorphous polymer polyethersulfone (PES) tuaj yeem txhim kho lub lubricating zog ntawm PES. Lub tuam txhab British ICI thiab Nyiv Sumitomo Tshuaj tau ua tiav cov khoom siv PES tshiab hloov kho los ntawm PTFE; PTFE thiab polyphenylene ether (PPO) blends yog tshwj xeeb tshaj yog haum rau ua ib qho thiab loj bearing Cheebtsam; poly (phthalate-diphenol-raws li propane)) cob yog amorphous thiab pob tshab polymer nrog ntau yam zoo heev. Tom qab hloov kho nrog PTFE, nws cov tshuaj tiv thaiv thiab nws tus kheej lubrication tuaj yeem txhim kho tau zoo; kev sib xyaw ntawm PTFE thiab polycarbonate tsim los ntawm Teijin Chemicals yog qhov tshwj xeeb. Kev tsim cov iav cams thiab bearings rau tshuab, tsheb, khoom siv hluav taws xob thiab lwm yam khoom siv.

Ib qho me me ntawm cov pab pawg tsis muaj fluorine tau nkag mus rau hauv cov kab PTFE kab, thiab thaiv grafting yog ua los rhuav tshem nws cov symmetry, yog li tau txais ib qho kev hloov kho PTFE uas tuaj yeem ua tiav los ntawm cov txheej txheem thermoplastic. Dispersion, PTFE micropowder thiab nthuav PTFE muaj nuj nqis heev vim lawv cov txheej txheem zoo heev.