Cov ntaub ntawv ntawm cov khau nres yog dab tsi?

Cov ntaub ntawv ntawm cov khau nres yog feem ntau cov hauv qab no:

Asbestos: Asbestos cov khoom siv tsawg nyob hauv tus nqi thiab lub teeb hauv qhov hnyav. Nws yog dav siv nyob rau hauv cov tsheb thauj khoom thiab cov tsheb uas tsim khoom lag luam, tab sis nws cov kev tiv thaiv ib puag ncig yog cov neeg pluag thiab kev siv tau txwv los ntawm cov kev cai hauv tebchaws.
Semi-hlau: Semi-hlau cov khoom siv tau siv thaum lub tsheb nres nres tawm ntawm lub hoobkas. Nws muaj cov hlau fiber, graphite thiab cov ntaub ntawv organic. Nws muaj cov thermal zoo heev thiab hnav tsis kam thiab yog tsim rau kev tsav tsheb txhua hnub.
Hlau: Cov ntaub ntawv hlau suav nrog cov hlau thiab tooj. Hlau nres Pads muaj cov hnav zoo, thaum tooj liab nres nres tuaj yeem pom cov hlau thaiv lossis cov khoom me me rau saum npoo.
Ceramic: Ceramic nres cov tuab, muaj kub kub kuj, lub suab tsis muaj plua plav, thiab lub neej zoo heev thiab kev ua tau zoo.
High carbon (titanium) fiber: muaj cov pa roj carbon ntau yog ib qho hloov kho tshiab ntawm cov ceramic ntaub. Nws yog lub teeb nyob rau hauv qhov hnyav, siab me, me me hauv thermal expransion thiab cov kev coj ua tsis zoo tshaj li 1.5 zaug ntawm kev sib txawv ceramic ntaub qhwv.
Cov hlau tsawg: cov khoom siv hlau qis muaj cov ntsuas kub zoo dua thiab kub dissipation muaj peev xwm thiab cov suab tsis tshua muaj. Nao: Nao nres pads yog ua los ntawm cov iav fiber ntau, roj hmab thiab cob yas, nrog lub suab yau thiab tsawg dua hnav ntawm lub disc. Cov hmoov metallgy cov hmoov av: Siv rau braking thiab kis mob nrog kub siab dua, xws li aircraft, tsheb thiab hnyav siv tshuab. Cermet: sib txuas cov yam ntxwv ntawm ceramics thiab cov hlau los muab kev ua tau zoo thiab ruaj khov.