"Saib" ntawm qhov tshwm sim
Xim: Zoo PP-R cov kav dej muaj cov xim mos, zoo ib yam tsis muaj impurities. (PP-R cov kav dej feem ntau tuaj yeem muaj ntau xim, suav nrog dawb, grey, ntshav, ntsuab, daj, thiab xiav. Cov neeg siv khoom feem ntau ntseeg tias dawb yog qhov zoo tshaj plaws, tab sis xim tsis yog tus qauv rau kev txiav txim siab zoo. Qhov tseeb, qhov zoo ntawm PP-R cov kav dej tsis muaj dab tsi ua rau lawv cov xim. Cov khoom yas yog feem ntau yog xim dawb thiab pob tshab). tuaj yeem tsim tau. Txawm li cas los xij, qhov txiaj ntsig no tsuas yog muaj nyob rau hauv cov yeeb nkab txuas thiab cov yeeb nkab shafts. Cov kav dej hauv tsev yog txhua yam zais, yog li tsis muaj lub hauv paus rau qhov kev thov tias grey yog superior rau lwm cov xim. PP-R cov kav dej yog opaque kiag li, thaum pseudo-PP-R kav dej yog me ntsis translucent los yog semi{22}}translucent. Cov khoom dawb feem ntau tsuas yog tsim los siv cov PP ntshiab -R cov ntaub ntawv raw. Cov khoom tsim nrog cov khoom siv rov ua dua tshiab, pov tseg, lossis cov khoom seem yuav muaj xim tsis sib xws thiab tsis tshua muaj zog. Hloov pauv, ntxiv cov khoom siv rov ua dua tshiab, pov tseg, lossis cov khoom seem rau lwm cov khoom siv xim ua tiav nrog cov xim masterbatch yuav tsis cuam tshuam rau xim. Qhov no yog vim li cas ntau lub tuam txhab tsom mus rau qhov zoo thiab feem ntau muag cov khoom txhim kho hauv tsev feem ntau yog siv dawb. Sab hauv thiab sab nrauv ntawm cov khoom yuav tsum du thiab tiaj tus, tsis muaj qhov tsis xws luag xws li npuas, pom tseeb dents, grooves, lossis impurities.
"Kov" qhov kev ntxhib los mos
Zoo PP-R cov kav dej yog 100% ua los ntawm PP-R raw khoom (tsis muaj additives), nrog ib tug ntshiab kev ntxhib los mos, du nto, thiab mos mos. Khoom cuav PP-R kav dej zoo li tus kov; Feem ntau, cov uas muaj ntxhib hais yog yuav tov nrog impurities.
"Smell" tus ntxhiab
Cov khoom tseem ceeb ntawm PP-R kav dej yog polypropylene. Cov kav dej zoo tsis muaj ntxhiab tsw, thaum cov kav dej tsis zoo muaj cov ntxhiab tsw txawv txawv, uas yuav qhia tau tias qhov sib ntxiv ntawm polyethylene tsis yog polypropylene.
"Squeeze" Hardness
PP-R kav dej muaj qhov nyuaj heev. Cov kav dej uas tuaj yeem yooj yim deformed los ntawm squeezing yog twv yuav raug hu tsis yog PP -R kav dej.
"Measure" phab ntsa Thickness
Xwb, koj tuaj yeem siv calipers los ntsuas seb cov yeeb nkab phab ntsa tuab puas ua tau raws li tus qauv thiab tsis sib xws. Cov kav dej zoo feem ntau yog tsim los nruj raws li lub teb chaws tus qauv, tab sis txoj kev no yuav tsum muaj qee qhov kev nkag siab ntawm lub teb chaws tus qauv rau PP-R kav.
"Mloog" rau lub Suab
PP-R kav dej tsim lub suab duller thaum poob, thaum cuav PP-R kav dej ua suab nrov.
"Smashing" Resilience
Zoo PP-R kav dej muaj qhov "resilience." Cov kav dej uas tawg yooj yim yog qhov tsis zoo PP -R kav dej. Txawm li cas los xij, txawm tias qhov zoo tshaj plaws PP -R kav dej tuaj yeem tawg ntawm qhov kub qis dua 10 degrees Celsius. Tab sis siab hardness tsis sib npaug zoo elasticity. Qee cov tuam ntxhab ntxiv cov calcium carbonate ntau dhau thiab lwm yam impurities los ua kom tawv tawv, ua rau lawv tsis tawg, tab sis ua rau brittleness dhau sijhawm. (Qhov txias brittleness ntawm PP-R raw cov ntaub ntawv sib txawv nyob rau hauv ntau qhov kub thiab txias: 10, -5, -23...)
"Hlawv" pa taws thiab tsw
PP-R cov kav dej sib xyaw nrog cov khoom siv rov ua dua tshiab thiab lwm yam tsis huv yuav tawm cov pa luam yeeb dub thiab muaj ntxhiab tsw. Zoo zoo PP-R kav dej, ntawm qhov tod tes, yuav tsis tawm cov pa luam yeeb dub lossis muaj ntxhiab tsw thaum hlawv, thiab cov kua molten yuav huv si. (Xwb, koj tuaj yeem "rub" nws los saib nws "ntev".)
"Fusion"
Qhov ntsuas kub li qub rau PP-R kav dej yog nyob rau hauv thaj tsam ntawm 260-290℃. Vuam nyob rau hauv qhov ntsuas kub no ua kom zoo dua vuam zoo. Yog hais tias, nyob rau hauv ib txwm welding tsis, cov khoom yooj yim nkag mus rau hauv vuam tuag thiab cov hlaws vuam yog yuav luag kua, nws qhia tau hais tias cov khoom tsis yog tsim los ntawm tiag tiag PP-R khoom. Tsis tas li ntawd, yog tias cov hlaws hlaws txias thiab tawv sai heev (feem ntau hauv 10 vib nas this), nws kuj qhia tau tias cov khoom tsis yog tsim los ntawm cov khoom siv PP tiag tiag -R. Qhov no yog vim hais tias ib qho ntawm cov yam ntxwv ntawm PP-R yog nws cov rwb thaiv tsev zoo, ua rau qeeb qeeb qeeb.
Tshawb xyuas qhov deformation ntawm cov yeeb nkab sab hauv txoj kab uas hla thiab rau txoj hlua ntawm cov fittings. Zoo PP-R kav dej tsis muaj hlua thiab lawv txoj kab uas hla tsis yooj yim deformed.
"Kev tshuaj xyuas"
Siv cov cuab yeej ntsuas los ua cov kev tshuaj ntsuam xyuas kom paub qhov txawv ntawm cov khoom zoo dua thiab cov khoom qis dua. Lub teb chaws tus qauv qhia txog ntau yam kev ntsuas tseem ceeb, xws li cov yeeb nkab aging resistance test (ib qho kev ntsuam xyuas uas ua kom cov yeeb nkab tsis poob rau 8760 teev nyob rau hauv lub nplhaib kev ntxhov siab ntawm 1.9 MPa thiab qhov ntsuas kub ntawm 110 degree), cov kav raj xa dej ruaj khov (5000 cycles ntawm thermal cycling), thiab qhov cuam tshuam kev ntsuas. Yog li ntawd, cov neeg siv tuaj yeem thov cov chaw tsim khoom lossis cov chaw muag khoom los muab cov ntaub ntawv ntsuas saum toj no rau kev kuaj xyuas thaum xaiv cov kav dej thiab fittings. Nws tseem yuav tsum tau muab sau tseg tias lub teb chaws tus qauv muaj ib qho tseem ceeb yuav tsum tau rau cov raw khoom siv nyob rau hauv cov kav dej thiab fittings: lub melt flow index. Lub teb chaws tus qauv xav kom qhov kev hloov pauv hauv cov dej ntws ntsuas ua ntej thiab tom qab ua tiav yuav tsum tsis pub tshaj 30%, thiab kev lag luam kuj tseem muaj qhov yuav tsum tau ua kom cov dej ntws ntsuas ntawm cov khoom siv raw yuav tsum tsis pub tshaj 0.5 g / 10 min.
