ABS Yas: Cov Yam Ntxwv, Qhov Zoo Thiab Qhov Tsis Zoo

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ABS Yas: Cov Yam Ntxwv, Qhov Zoo Thiab Qhov Tsis Zoo
ABS Yas: Cov Yam Ntxwv, Qhov Zoo Thiab Qhov Tsis Zoo

Video: ABS Yas: Cov Yam Ntxwv, Qhov Zoo Thiab Qhov Tsis Zoo

Video: ABS Yas: Cov Yam Ntxwv, Qhov Zoo Thiab Qhov Tsis Zoo
Video: plam koj yog qhov zoo phuab vaj nkauj tawm tshiab 2020-2021 2024, Kaum ib hlis
Anonim

Qhov xav tau los tsim cov ntaub ntawv tshiab hauv lub ntiaj teb niaj hnub no tau hnov ntau thiab ntau dua. Organic polymers siv nyob rau niaj hnub no yuav luag txhua qhov kev lag luam thiab qhov kev thov rau lawv yuav loj hlob zuj zus. ABS yas yog ib hom polymer.

ABS yas granules
ABS yas granules

Cov yam ntxwv ntawm ABS yas

ABS yas yog cov khoom siv polymer tshwj xeeb uas yog cov ntawv ua thermoplastic nrog cov nplai daj. Nws tau pom cov ntawv thov colossal hauv ntau qhov kev lag luam loj. Lub npe tag nrho ntawm cov khoom siv no suab zoo li acrylonitrile butadiene styrene yas. Xws li lub npe yooj yim tau piav qhia los ntawm cov khoom sib xyaw.

ABS yas muaj peb lub monomers:

- acrylonitrile, uas yog xim tsis muaj kua uas muaj ntxhiab tsw ntxiag;

- butadiene, ib lub roj tsis muaj kob uas muaj tus yam ntxwv tsw;

- styrene, ua kua tsis muaj kob uas muaj ntxhiab tsw.

ABS yas tau txais los ntawm radical copolymerization ntawm cov saum toj no monomers. Hauv cov tshuaj tiv thaiv no, cov roj hmab latex kuj yuav tsum muaj, uas yog lub hauv paus ntawm cov khoom lag luam yav tom ntej. Ntawm qhov sib txawv ntawm cov monomers, nws yuav tsum tswj hwm homogeneity ntawm cov yas. Qhov siab dua thawj zaug ntawm acrylonitrile, cov dej khov ntau ntawm cov polymer zaum kawg yuav yog.

ABS yas yog tus cwj pwm los ntawm ib ntu ua ntu zus los ntawm acrylonitrile thiab styrene. Tsis muaj cua qhov hws nyob hauv ntu kev nruam. Nws yog nws leej twg muab qhov kev cuam tshuam tshwj xeeb (ntau dua li ntawm polystyrene) thiab thermoplasticity ntawm cov khoom tiav. Cov yas no muaj peev xwm tiv taus kom sov li 100 ° C. Thaum siv sijhawm ntev siv, ABS yas yuav tsum tsis txhob muab kho rau qhov kub tshaj 80 ° C.

Muaj txiaj ntsig ntawm ABS yas

Ntxiv rau cov txiaj ntsig saum toj no, ABS yas yog cov tsis kam tiv thaiv kev tshaj tawm xov xwm, xws li acidic thiab alkaline. Nws tsis hloov nws qhov ntev thaum lub sijhawm ua haujlwm thiab zoo nkauj heev hauv qhov tsos, uas ua rau nws siv tau rau kev ua tiav lub tsheb sab hauv. Nws muaj qhov chaw du thiab ci ntsa iab, txawm hais tias ABS yas nrog matte nto kuj tseem niaj hnub no.

Kev tsis zoo ntawm ABS yas

Tsis muaj cov khoom zoo meej. ABS yas kuj muaj qhov tsis zoo. Nws dissolves nyob rau hauv ntau cov kuab tshuaj organic xws li ether, benzene, acetone thiab lwm tus. Cov polymer no tsis ruaj khov rau nag lossis daus thiab hnub ci.

Cov kws tshawb fawb tau muaj peev xwm los tsim cov thev naus laus zis uas tuaj yeem tshem qee qhov tsis sib xws ntawm ABS yas. Piv txwv li, yog tias butadiene, uas yog ib feem ntawm cov polymer, hloov nrog lub tshuab npliag elastomer, tom qab ntawd cov khoom siv hloov kho yuav tsis ua rau muaj huab cua phem.

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