Nres Pad Formulation - Cov khoom sib txhuam
1. Qhov muaj pes tsawg leeg ntawm cov khoom sib txhuam
Cov khoom siv sib txhuam yog cov khoom siv polymer ternary composite, uas muaj peb qhov chaw: polymer compound li binder; inorganic los yog organic fiber raws li kev tiv thaiv kev tiv thaiv; muab tub lim raws li kev sib txhuam kev ua haujlwm regulator lossis compounding tus neeg sawv cev.
1. Organic binder
Cov organic binders siv rau hauv cov ntaub ntawv sib txhuam yog phenolic resins thiab hluavtaws roj hmab, thiab phenolic resins yog cov tseem ceeb. Lawv cov yam ntxwv thiab kev ua haujlwm yog tias thaum lawv nyob ntawm qee qhov cua sov, lawv ua ntej muag muag thiab tom qab ntawd nkag mus rau hauv lub xeev cov dej khov, ua kom muaj dej ntws thiab sib npaug hauv cov khoom los tsim cov khoom siv matrix, thiab thaum kawg los ntawm cov roj hmab vulcanization ntawm resin. kho, cov fibers thiab fillers yog bonded. Ua ke, nws ua rau cov khoom sib txhuam nrog cov khoom sib txhuam nrog lub zog tuab, muaj zog thiab tuaj yeem ua tau raws li cov kev xav tau ntawm cov khoom sib txhuam. Cov kev xav tau zoo rau cov resin yog:
(1) Ua kom sov zoo, zoo thermal decomposition kub thiab thermal poob qis.
(2) Lub fineness ntawm hmoov resin yuav tsum siab, uas yog conducive mus rau lub uniformity ntawm dispersion ntawm cov sib tov thiab yuav txo tau tus nqi ntawm cov resin siv nyob rau hauv cov mis.
(3) Tsawg cov hmoov dawb dawb.
(4) Tsim nyog curing ceev thiab khiav nrug.
2. Fiber reinforced cov ntaub ntawv
Cov khoom siv fiber ntau yog cov khoom siv ntawm cov khoom sib txhuam, uas ua rau cov khoom sib txhuam nrog cov khoom siv zog txaus, kom nws tuaj yeem tiv taus lub zog ntawm kev sib tsoo thiab riveting txheej txheem ntawm kev sib txhuam phaj thaum lub sij hawm tsim khoom thiab kev sib txhuam los ntawm braking thiab kis tau tus mob thaum siv. Impact, shear, siab. kuv lub teb chaws cov qauv tsim nyog thiab cov tuam txhab tsheb tau muab tso rau pem hauv ntej cov khoom siv lub zog uas yuav tsum tau ua rau cov phaj sib txhuam raws li cov kev ua haujlwm tiag tiag ntawm cov phaj sib txhuam. Xws li: cuam tshuam lub zog, flexural zog, compressive zog, shear lub zog, thiab lwm yam. Yuav kom ua tau raws li cov kev xav tau kev ua tau zoo, nws yog ib qho tsim nyog yuav tau xaiv cov fiber ntau tsim nyog kom ua tau raws li qhov kev ua tau zoo.
Kev sib txhuam cov khoom xav tau rau nws cov khoom siv fiber ntau:
(1) Cov nyhuv txhim kho yog qhov zoo.
(2) Ua haujlwm kub zoo. Fusing, carbonization thiab thermal decomposition yuav tsis tshwm sim ntawm kev sib txhuam ua haujlwm kub.
(3) Nws muaj qhov coefficient ntawm kev sib txhuam.
(4) Lub hardness yuav tsum tsis txhob siab heev kom tsis txhob nres lub suab nrov thiab kev puas tsuaj rau lub nres disc los yog nruas.
(5) Cov txheej txheem muaj kev ua haujlwm zoo.
3. Ntim
Cov muab tub lim nyob rau hauv cov khoom siv sib txhuam yog tsim los ntawm kev sib txhuam kev ua tau zoo regulator thiab compounding agent. Lub hom phiaj ntawm kev siv fillers feem ntau suav nrog cov hauv qab no:
(1) Kho thiab txhim kho kev sib txhuam kev ua tau zoo, lub cev muaj zog thiab lub zog ntawm cov khoom siv.
(2) Tswj cov coefficient ntawm thermal expansion, thermal conductivity, thiab shrinkage ntawm cov khoom kom nce stability ntawm cov khoom loj.
(3) Txhim kho lub suab nrov nres ntawm cov khoom.
(4) Txhim kho cov txheej txheem tsim khoom thiab kev ua haujlwm ntawm cov khoom.
(5) Txhim kho qhov zoo thiab qhov ntom ntawm cov khoom.
(6) Txo cov nqi tsim khoom.
