Cov khoom noj khoom haus twg uas tau siv ntau dua rau cov ntaub pua plag tsev, polyurethane lossis polypropylene?

Thaum xaiv cov khoom siv tais diav rau cov ntaub pua plag (pp vs.

Tus nqi: PP muab tau ib qho txiaj ntsig tseem ceeb.

PP: Cov khoom siv raw qis thiab cov txheej txheem ntau lawm (kev txhaj tshuaj yooj yim (txhaj tshuaj

PU: Cov khoom siv raw raw thiab cov txheej txheem ntau lawm ua npuas ncauj (foaming, vulcanization, thiab lwm yam) ua rau cov nqi siab dua. Qhov kev tshaj tawm kev ua tau zoo tshaj yuav ua tau cov kev xav tau ntau dua.

Kev ua tau zoo: xaiv raws li koj cov kev xav tau.

Kev Mob Ciaj: PP muab cov hardness siab thiab tsis tshua muaj zog rau kev nkag siab fiber ntau rau ntawm cov ntaub pua plag / tiaj tus, muab cov ntaub pua plag uas muaj peev xwm sib piv rau pu. PU muab ntau tshaj qhia tau zoo dua hauv cov ntaub pua chaw ntev, tiv thaiv kev cia siab.

Kev tiv thaiv ntaub pua plag: PU muaj ntau dua elasticity thiab me ntsis kev tiv thaiv zoo dua (tshwj xeeb yog cov ntug dej ntev / high-end PP muab kev tiv thaiv kom luv luv rau cov xiav luv nrog lub log diam ntau dua lossis sib npaug, tab sis ceev faj txog ntev carpice (vim muaj kev pheej hmoo ntawm kev pheej hmoo).

Nyob ntsiag to thiab poob siab: PU muaj qhov zoo elasticity thiab yog 10% -20% qua ntxi dua li pp, ua rau nws haum cov chaw nyob ntsiag to xws li chaw ua haujlwm. PP yog me ntsis tsis muaj suab nrov, tab sis lees paub nyob rau hauv cov chaw nyob ntsiag to tsawg.

Txwv:

PP: Nws yog nke ntawm tsawg kub (<0°C) and may crack under prolonged overload (e.g., >40 kg / log). Nws tsis haum rau cov ntaub pua plag ntev heev.

PU: It may soften and deform at high temperatures (>60 degree). Nws cov coj tsis kam yog qis dua PP lub sijhawm ntev, kev siv ntau zaus, thiab nws tus nqi pib siab dua.

Tus nqi-rau-nyiaj xaus: Scenario ua ntej

PP yog qhov xav tau rau: tsawg peev nyiaj / kev yuav khoom (chaw ua haujlwm txee, lub teeb ua haujlwm lub teeb); luv-pawg / tiaj-woven pua thiab cov chaw nyob ntsiag to (chav nyob, tsev khaws khoom); Kev siv niaj hnub siv nyob rau hauv chav sov thiab nrog nruab nrab rau cov khoom lag luam qis (tsawg dua lossis sib npaug nrog 40 kg / log). Cov txiaj ntsig: Tus nqi qis, hnav tsis kam, thiab theem pib ua kev ua tau zoo uas tau raws cov ntaub pua plag uas muaj cov nqi tag nrho.

Xaiv PU thaum: Cov suab nrov txo / cov suab nrov txo qis yuav tsum muaj cov chaw ua haujlwm (chaw ua haujlwm, tsev kho mob); ntev-pawg / tuab cov ntaub pua tsev lossis cov kev tiv thaiv pem teb siab; thiab txav cov khoom siv precision hauv qhov tsawg rau nruab nrab kub thiab nrog nruab nrab loads. Cov txiaj ntsig: Cov neeg siv zoo dua (cov suab nrov txo thiab tiv thaiv), tab sis ntawm tus nqi siab dua.

Ntsiab lus: Hauv cov ntawv thov ntaub pua feem ntau (luv-pawg, tsis muaj txiaj ntsig zoo dua, nrog nws cov nqi kom tau txais txiaj ntsig zoo txawm tias muaj kev ua tau zoo me. PU tus nqi-ua tau zoo tsuas yog hais tawm thaum cov suab txo, kev tiv thaiv kev co, lossis kev tiv thaiv pem teb yog qhov tseem ceeb. Xaiv raws li kev xav tau tiag tiag thiab peev nyiaj kom tsis txhob them tus nqi them rau "kev ua haujlwm ntau dhau."