PP khoom yog dab tsi?

Dab tsi yog cov khoom ntawm PP?

Polypropylene, ib hom yas, yog qhov siab ntom, tsis muaj sab saw hlau, siab crystallization ntawm linear polymer, nrog cov khoom siv zoo heev. Cov khoom lag luam: phiab, thoob, rooj tog zaum, zaj duab xis, woven hnab, lub raj mis, lub tsheb bumper, thiab lwm yam.

PP yas, tshuaj lub npe: Polypropylene (pp rau luv), piv txwv: 0.9-0.91 g / cubic centimeter, tsim shrinkage tus nqi: 1.0-2.5%, molding kub : 160-220 degree . PP yog crystalline polymer, PP qhov kev ua tau zoo yog zoo dua li cov khoom siv PE. Cov khoom ua los ntawm PP muaj lub teeb yuag, zoo toughness, thiab zoo tshuaj tiv thaiv. Qhov tsis zoo ntawm PP: tsis tshua muaj qhov tseeb, tsis txaus rigidity, huab cua tsis zoo, nws muaj qhov tshwm sim shrinkage, nws yooj yim laus, nkig, yooj yim deformation tom qab stripping. Hauv lub neej niaj hnub, cov khoom siv feem ntau yog ua los ntawm cov khoom siv PP.

Puas yog PP cov khoom muaj tshuaj lom?
Txhawm rau paub seb cov khoom siv pp puas muaj tshuaj lom, peb tseem muaj kev nkag siab zoo txog qhov xwm txheej ntawm pp khoom ua ntej, lub npe hu ua pp khoom, uas yog, polypropylene hauv peb lub neej txhua hnub, nws yog ib qho dawb translucent yam tsis muaj sab saw, siab ceev linear. polymer, muaj roj zoo thiab tsis muaj zog acid thiab alkali tsis kam. Txij li nws txoj kev ua tau zoo yog qhov zoo, nws feem ntau siv rau hauv tsev, thoob, phiab, lub raj mis thiab lwm yam.

Cov khoom tseem ceeb ntawm sab hauv pp yog siab purity propylene, uas suav nrog qee qhov me me ntawm ethylene copolymer. Tom qab ziab, sib tov, extrusion, granulation, kev tshuaj ntsuam thiab homogenization ntawm polypropylene hais, cov khoom no yog cylindrical hais, hais yog heev du, tsis muaj cov neeg kho tshuab impurities, nws muaj zoo mechanical zog thiab kub tsis kam, Nws tsis muaj tshuaj lom thaum siv nyob rau hauv qhov kub thiab txias. Qhov kub ntawm qhov kub ntawm 30 ° C mus rau 140 ° C.

PP cov ntaub ntawv yog cov khoom siv uas tsis yog-woven, tuaj yeem siv rau hauv kev tsim khoomntsej muag lub ntsej muag, khaub ncaws tiv thaiv, cais khaub ncaws, chav kuaj khaub ncaws, khaub ncaws ua haujlwm, khau npog, kaus mom thiab lwm yam khoom tsis-woven. nrog cov yam ntxwv ntawm cov dej tsis zoo, tsis muaj dej tsis muaj pov thawj, breathable, ib puag ncig tiv thaiv, nplua nuj xim thiab lwm yam ntxwv.

PP khoom yog ib hom kev tiv thaiv ib puag ncig, tsis muaj tshuaj lom, tsis siv neeg degradation ntawm ib puag ncig tiv thaiv cov ntaub ntawv, feem ntau siv hauv kev kho mob, tshuaj, zaub mov, kev lag luam, hluav taws xob thiab lwm yam lag luam.