Yuav ua li cas txhim kho cov yas tiv thaiv khawb thiab hnav tsis kam

Xaiv cov resin yooj yim

Feem ntau cov polyethylene hnyav molecular siab heev (PE-UHWM) yog ib qho ntawm cov yas uas tsis yooj yim hnav, thiab kev xaiv PE-U·HWM tsuas yog tuaj yeem txhim kho qhov tsis yooj yim hnav ntawm cov khoom. Tsis tas li ntawd, cov yas uas muaj crystallization siab, kev sib xws siab yog qhov tsis yooj yim hnav dua li cov uas muaj qhov nyuaj siab. Hauv kev hloov kho polypropylene (PP), #pp pelletizing tshuab polyolefin elastomer (POE), ethylene propylene terene roj hmab (EPDM), thermoplastic dynamic vulcanized roj hmab (TPV) (xws li dynamic vulcanized PP/EPDM) feem ntau yog siv los ua kom PP tawv, thiab ntxiv cov elastomers feem ntau ua rau kev tiv thaiv khawb tsis zoo, yog li nws tseem ceeb heev uas yuav tsum xaiv cov elastomer tsim nyog. Qhov kev txiav txim ntawm kev tiv thaiv khawb yog raws li nram no: TPV > EPDM > POE. # tshuab ua pp granules.

Siv cov khoom siv tiv thaiv kev hnav zoo

(1) Molybdenum disulfide

Molybdenum disulfide, yog ib yam khoom siv uas tsis yooj yim hnav, feem ntau yog siv rau hauv cov yas nylon. Molybdenum disulfide ua haujlwm ua tus neeg sawv cev crystallizing los ua kom nylon crystallinity nce, yog li cov khoom nylon tsim cov nplaim tawv dua thiab tiv taus hnav dua. Molybdenum disulfide muaj kev sib raug zoo rau hlau, thaum adsorbed rau ntawm qhov chaw hlau, molybdenum disulfide molecules yuav ua rau qhov chaw hlau puv nrog cov qhov me me, thiab ua rau qhov chaw hlau du dua, uas ua rau molybdenum disulfide yog ib qho khoom siv zoo tshaj plaws uas tsis yooj yim hnav rau nylon thiab hlau sib txhuam.

(2) Cov xim av

Cov qauv ntawm graphite yog cov qauv siv lead ua los ntawm cov pob zeb graphite, txheej hexagonal, cov qauv tshuaj lom neeg tshwj xeeb no ua rau cov graphite molecules yooj yim swb ib leeg thaum raug kev sib txhuam me ntsis, qhov kev tiv thaiv hnav no yog qhov tseem ceeb hauv ib puag ncig nrog dej, yog li graphite ua cov khoom siv tiv thaiv hnav zoo tshaj plaws siv rau ntau qhov chaw tso rau hauv dej, xws li lub plhaub dej, hniav thiab foob. #pp tsev template board tshuab #xpe foamed daim ntawv ua tshuab

(3) Fiberglass

Cov iav fiber tuaj yeem tsim kom muaj kev sib txuas lus zoo ntawm cov polymers, yog li cov iav fiber tuaj yeem txhim kho kev ua haujlwm ntawm cov qauv thermoplastic thiab txhim kho kev hnav tsis kam. Cov iav fiber muab kev txhawb nqa thiab tuaj yeem txhim kho cov thermal conductivity thiab thermal deformation ntawm cov yas, txhim kho qhov kev tiv thaiv load thiab hnav tsis kam ntawm cov yas.

(4) cov fiber carbon

#CFRTP Tshuab Sib Xyaws

Ib yam li cov iav fiber, carbon fiber tuaj yeem txhim kho qhov kev ncaj ncees ntawm cov qauv khoom, kev tiv thaiv kev thauj khoom thiab kev tiv thaiv kev hnav. Tsis zoo li iav fiber, carbon fiber yog cov fiber mos dua thiab tsis khawb, thiab carbon fiber yuav tsis khawb qhov sib txhuam ntawm hlau lossis hlau uas nws raug txhuam.

Ntxiv cov khoom siv tiv taus kev hnav uas tsim nyog

(1) Polytetrafluoroethylene (PTFE)

Polytetrafluoroethylene (PTFE) muaj qhov sib txhuam tsawg heev, thiab PTFE molecules tsim cov zaj duab xis lubricating rau ntawm qhov chaw thaum lub sijhawm sib txhuam. PTFE muaj lubricity zoo thiab hnav tsis kam hauv qab kev sib txhuam, thiab yog qhov zoo tshaj plaws hnav tsis kam additive hauv cov ntawv thov siab. Cov ntawv thov siab no suav nrog hydraulic piston ring seals thiab thrust washers. Cov ntsiab lus PTFE hauv amorphous plastics feem ntau yog 15%, thiab hauv crystalline plastics feem ntau yog 20%.