Plastics lub hom phiaj dav dav: cov hom phiaj dav dav yog xa mus rau cov yas uas muaj cov khoom siv hluav taws xob tsawg thiab cov khoom siv hluav taws xob, uas tsis tuaj yeem siv los ua cov khoom siv, tab sis nrog cov nyiaj ntau thiab ntau yam. Tsib yam khoom yas: polyethylene,polypropylene, polystyrene, polyvinyl chloride, ABS (propylene, polycarbonate, polyformaldehyde, polyimide thiab polyamide resin feem ntau siv ua npuas yas, thiab lwm yam) paub zoo. Ntawm cov hluavtaws fibers, polyester fiber (ester fiber), acrylic fiber (polyacrylonitrile fiber), nylon (polyamide fiber) twb tau nkag mus rau ntau txhiab tsev neeg.
Nyob rau hauv cov roj hmab hluavtaws, styrene butadiene roj hmab thiab polybutadiene dav hom phiaj qib polyphenylene ethylene (GPPS)
, thiab tej zaum yuav hloov mus rau ib tug xoob tshuav nyiaj li cas, tus nqi yuav poob. Tab sis yog tias xyoo no cov khoom siv roj hmab siab siab tsis zoo, ces qhov nro thiab qhov sib npaug yuav hloov mus rau lub xeev ntawm cov khoom siv luv luv, thiab tus nqi yuav nce ntxiv. Yog li ntawd, lub xyoo no high-pressure roj hmab raj nqe qauv yog loj heev. Muaj ntau tus neeg muag khoom, cov neeg yuav khoom thiab cov chaw tsim khoom. Lub steel hlau woven high-pressure roj hmab raj qauv yog tsim los ntawm cov kua resistant hluavtaws roj hmab puab txheej, steel hlau reinforcement txheej thiab huab cua resistant hluavtaws roj hmab txheej txheej. Daim ntawv thov: feem ntau yog siv rau dav hlau roj roj, mine hydraulic kev txhawb nqa, kev siv roj av, engineering machinery rau Tuam Tshoj ua lag luam.
Cov yam ntxwv thiab kev siv ntawm polystyrene
I. yam ntxwv
1. GPPS cov yam ntxwv
GPPS yog xim tsis muaj xim, tsis muaj ntxhiab, tsis qab, glossy thiab pob tshab. Lub teeb yuag, tus nqi qis, tsis tshua muaj dej nqus, xim zoo, qhov ruaj khov, kev ua haujlwm zoo hluav taws xob, cov khoom pob tshab, ua haujlwm yooj yim.
GPPS yog soluble hauv aromatic hydrocarbons, chlorinated hydrocarbons, aliphatic ketones thiab esters, tab sis tsuas yog nyob rau hauv acetone. Nws tuaj yeem tiv taus qhov kev txiav txim ntawm qee cov roj ntxhia, organic acid, alkali, ntsev, qis cawv thiab nws cov tshuaj aqueous. Cov khoom siv kho tshuab thiab qhov ntev ntawm qhov ruaj khov tuaj yeem khaws cia hauv qhov chaw ntub dej vim qhov nqus dej tsawg. Nws muaj kev ua tau zoo ntawm hluav taws xob, siab ntim tsis kam thiab qhov chaw tiv thaiv, thiab tsis cuam tshuam los ntawm qhov kub thiab txias hloov, lossis los ntawm corona paug. Radiation kuj zoo heev.
GPPS yog nkig thiab yooj yim tawg, tsis tshua muaj kev cuam tshuam lub zog, tsis zoo cua sov, tsis tuaj yeem tiv taus cov dej kub npau npau, tsuas yog siv rau qhov kub thiab txias. Lub hnub ci tsis zoo, flammable. Dub thaum hlawv, thiab muaj stink tshwj xeeb.
2 Kev siv PS
Lub hom phiaj dav dav polystyrene, tuaj yeem siv rau hauv cov khoom siv niaj hnub, hluav taws xob, ntsuas lub plhaub, cov khoom ua si, teeb, khoom siv hauv tsev, ntawv sau, ntim tshuaj pleev ib ce, chav
Sab hauv thiab sab nrauv kho kom zoo nkauj, txiv hmab txiv ntoo phaj, qhov chaw kho qhov muag (xws li prism, lens), lens, qhov rais iav thiab molding, teeb, telecommunication accessories, hluav taws xob zaus capacitor zaj duab xis, high zaus rwb thaiv tsev cov ntaub ntawv, TV ntim, waveguide, ntim tshuaj, thiab lwm yam. Suspension polymerized resin tuaj yeem ua rau hauv cov yas ua npuas dej ntawm qhov sib txawv, uas tuaj yeem siv los ua cov rwb thaiv tsev kub, suab rwb thaiv tsev, shockproof, ntab, ntim cov ntaub ntawv, cork hloov, preformed ua npuas ncauj yuav siv tau raws li dej lim nruab nrab thiab lub teeb pob zeb, tsis tshua muaj foaming plastics. tuaj yeem ua rau ntoo hluavtaws rau rooj tog, thiab lwm yam.
3.High impact polystyrene (HIPS) tuaj yeem txhaj tshuaj molded lossis extruded rau hauv ntau yam khoom, tsim rau lub plhaub ntawm cov khoom siv hluav taws xob hauv tsev, cov khoom siv hluav taws xob, cov cuab yeej siv, cov tub yees hauv ob sab phlu, phaj, TV, recorder, xov tooj plhaub, ntawv sau thiab cov khoom siv kev kawm, cov khoom ua si, ntim ntim, khoom siv txhua hnub, rooj tog zaum, tais diav, tais diav, khoom ua npuas ncauj, thiab lwm yam.
Kev ua ntawm polystyrene
Polystyrene muaj fluidity zoo, processability, yooj yim xim thiab zoo seem stability. Nws tuaj yeem ua tiav rau hauv ntau qhov chaw los ntawm kev txhaj tshuaj molding, extrusion, tshuab moulding, foaming, thermoforming, bonding, txheej, vuam, machining, luam ntawv, thiab lwm yam. Nws yog tshwj xeeb tshaj yog haum rau kev txhaj tshuaj molding. Cov ntaub ntawv tuaj yeem siv ncaj qha yam tsis muaj ziab thaum txhaj tshuaj molding. Txawm li cas los xij, txhawm rau txhim kho qhov zoo ntawm cov khoom, nws tuaj yeem ua kom qhuav rau {{{0}} h hauv qhov cub tawg ntawm 55 degree ~ 70 degree . Cov txheej txheem ua kom ntxaws yog raws li hauv qab no: qhov ntsuas kub yog li 200 degree, pwm kub yog 60-80 degree, txhaj tshuaj kub yog 170-220 degree, thiab txhaj tshuaj siab piv yog 1.{{7} }.0. Tom qab tsim, cov khoom yuav tsum tau kho ntawm 70 degree rau 2-4h nyob rau hauv infrared teeb los yog blast qhov cub.