Polyphenylene Sulfide (PPS) yog dab tsi?

Polyphenylene Sulfide (PPS) yog ib qho semi-crystalline thermoplastic polymer nrog cov tsos daj daj. Nws muaj cov ntsiab lus melting ntawm kwv yees li 290 ° C thiab qhov ceev ntawm ib ncig ntawm 1.35 g / cm³. Nws cov pob txha molecular - tsim los ntawm kev hloov benzene rings thiab sulfur atoms - muab nws cov qauv nruj thiab ruaj khov heev.

PPS paub txog nws cov hardness siab, zoo thermal stability, tshuaj tsis kam, thiab txhua yam muaj zog. Vim nws txoj kev ua tau zoo, PPS tau txais kev lees paub dav dav tias yog ib qho ntawm 6 qhov loj engineering yas, nrog rau polyethylene terephthalate (PET), nylon (PA), polycarbonate (PC), polyoxymethylene (POM), thiab polyphenylene ether (PPO).

Daim ntawv thiab daim ntawv thov ntawm PPS

Polyphenylene Sulfide (PPS) cov khoom muaj nyob rau hauv ntau hom thiab qib, xws li resins, fibers, filaments, films, thiab coatings, ua rau lawv muaj ntau yam. Cov cheeb tsam tseem ceeb ntawm PPS suav nrog kev lag luam tsheb, hluav taws xob thiab hluav taws xob, kev lag luam tshuaj lom neeg, tub rog thiab kev tiv thaiv, textile sector, thiab kev tiv thaiv ib puag ncig.

Common Challenges hauv PPSengineering plastics ibnd Yuav daws lawv li cas

Txawm hais tias nws cov khoom zoo heev, PPS engineering plastics tseem ntsib ntau yam kev ua haujlwm thiab kev ua haujlwm nyuaj hauv kev siv tswv yim. Nov yog peb qhov teeb meem feem ntau thiab lawv cov kev daws teeb meem sib xws:

1. Brittleness nyob rau hauv Unfilled PPS

Kev Sib Tw: Cov PPS tsis tau ua tiav yog qhov ua rau nkig, txwv tsis pub siv rau hauv cov ntawv thov kom muaj kev cuam tshuam los yog hloov tau yooj yim (piv txwv li, cov khoom raug poob siab lossis kev co).

Ua rau:

Tsawg elongation thaum tawg vim nws cov qauv molecular nruj.

Tsis muaj additives los txhim kho toughness.

Kev daws:

Siv cov qib PPS ntxiv nrog cov iav fiber ntau (piv txwv li, 40% iav-filled) los yog cov ntxhia ntxiv los txhim kho kev cuam tshuam lub zog thiab tawv.

Sib tov nrog elastomers los yog cuam tshuam kev hloov pauv rau cov ntawv thov tshwj xeeb.

2. Tsis zoo adhesion rau txheej los yog Bonding

Kev sib tw: PPS's chemical inertness ua rau nws nyuaj rau cov nplaum, txheej, los yog cov xim pleev xim rau, ua rau muaj kev sib txuam los yog qhov chaw tiav (xws li, hauv cov vaj tsev hauv hluav taws xob lossis cov khoom siv coated).

Ua rau:

Tsis tshua muaj zog nto vim PPS cov qauv tshuaj tsis muaj polar.

Resistance rau chemical bonding los yog nto ntub dej.

Kev daws:

Siv cov kev kho mob saum npoo xws li plasma etching, corona tawm, lossis tshuaj priming kom muaj zog saum npoo.

Siv cov nplaum tshwj xeeb (xws li, epoxy lossis polyurethane-raws li) tsim rau PPS.

3. Hnav thiab Friction hauv Dynamic Applications

Kev sib tw: Cov qib PPS uas tsis tau ua tiav lossis cov qauv PPS pom muaj tus nqi hnav siab lossis kev sib txhuam hauv cov khoom txav xws li cov kabmob, lub zog, lossis cov ntsaws ruaj ruaj, ua rau tsis ua haujlwm ntxov ntxov hauv cov ntawv thov tsis muaj zog.

Causs:

Qhov sib npaug siab coefficient ntawm kev sib txhuam hauv PPS tsis ua tiav.

Txwv lubricity nyob rau hauv siab loads los yog nruam txav.

Kev daws:

Xaivlubricated PPS qib nrog additiveszoo li PTFE, graphite, los yog molybdenum disulfide kom txo kev sib txhuam thiab txhim khu kev hnav tsis kam.

Siv cov qib txhawb zog (xws li, carbon fiber-filled) kom muaj peev xwm ntau dua.

SILIKE Lubricant Processing Aids thiab Surface Modifiers rau PPS Engineering Plastics

Cov kev daws teeb meem tshiab los txhim kho qhov hnav tsis kam ntawm PPS zawv zawg Cheebtsam

Qhia cov khoom siv silicone-raws li SILIKE LYSI-530A thiab SILIMER 0110

LYSI-530A thiab SILIMER 0110 yog cov khoom siv roj nplua nyeem tshiab thiab kev hloov kho saum npoo rau polyphenylene sulfide (PPS), nyuam qhuav pib los ntawm SILIKE. Cov silicone-based additives ua haujlwm zoo ib yam li polytetrafluoroethylene (PTFE), uas yog lawv lub zog qis. Raws li qhov tshwm sim, lawv txo qis tus nqi hnav thiab kev sib txhuam coefficient ntawm PPS cov khoom sib xyaw.

Cov additives no muaj qhov tshwj xeeb tsis tshua muaj kev sib txhuam coefficient thiab ua haujlwm zoo li cov roj lubricants. Lawv tsim ib zaj duab xis nyias rau ntawm qhov chaw ntawm PPS thaum raug shear quab yuam, yog li txo kev sib txhuam ntawm PPS thiab mating nto, tsis hais seb lawv yog xim hlau lossis yas.

Los ntawm kev siv tsuas yog 3% LYSI-530A, qhov sib txhuam dynamic kev sib txhuam tuaj yeem raug txo kom nyob ib ncig ntawm 0.158, ua rau lub ntsej muag du.

Tsis tas li ntawd, qhov sib ntxiv ntawm 3% SILIMER 0110 tuaj yeem tau txais kev sib txhuam qis ntawm ib puag ncig 0.191 thaum muab qhov sib npaug sib npaug rau qhov uas muab los ntawm 10% PTFE. Qhov no ua kom pom qhov ua tau zoo thiab muaj peev xwm ntawm cov khoom siv ntxiv no hauv kev txhim kho kev ua haujlwm thiab ua haujlwm ntev hla ntau yam kev siv, Zoo tagnrho rau zawv zawg, tig, lossis qhov chaw thauj khoom PPS dynamically.

SILIKE muaj kev ua haujlwm siabsilicone-based lubricants thiab kev pab ua haujlwmrau ntau hom kev siv yas. Peb cov additives yog tsim los txhim kho kev ua tau zoo thiab txhim kho cov khoom nto hauv cov khoom hloov kho thiab cov khoom sib txuas.

Nrhiav rau txoj cai additive rau koj formulation? Xaiv SILIKE - peb cov kev daws teeb meem silicone tuaj yeem ua rau koj xav tsis thoob nrog lawv cov kev ua tau zoo.
Txhim kho PPS kev ua tau zoo nrog silicone-based additives uas txo kev sib txhuam thiab hnav - tsis muaj PTFE xav tau..

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