2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Dab tsi yog cov khoom ntawm Polyvinyl Chloride?
| Khoom | Tus nqi |
|---|---|
| Kub Kub | 212 - 500 ° F (100 - 260 ° C) *** |
| Kub Kub Kub Kub (HDT) | 92 ° C (198 ° F) ** |
| Tensile zog | Saj zawg zog PVC : 6.9 - 25 MPa (1000 - 3625 PSI) Nyuaj PVC : 34 - 62 MPa (4930 - 9000 PSI) ** |
| Tshwj xeeb Lub ntiajteb txawj nqus | 1.35 - 1.45 |
Ua li no, PVC puas muaj zog?
PVC Cov yeeb nkab yog muaj zog thiab ruaj txawm tias lawv hnyav hnyav. Qhov no ua PVC Cov kav dej haum rau txhua hom kev siv mus sij hawm ntev suav nrog dej hauv tsev, dej phwj tuaj, dej nag, thiab cov kav dej hauv av tob.
Tom qab ntawd, lo lus nug yog, daim ntawv PVC siv rau dab tsi? Polyvinyl tshuaj dawb ( PVC ) yog ib qho ntawm qhov dav tshaj plaws siv plastics nyob rau hauv lub ntiaj teb no. Qhov kev lag luam no yas feem ntau siv los ua cov tso tsheb hlau luam tso tsheb hlau luam, tso tsheb hlau luam roj, thiab siv cov cuab yeej tsim duab. Yog tias koj xav tsim lub tsev cog khoom lossis ua kom lub caij ntuj sov nyob ntawm koj lub qhov rais, saib tsis muaj ntau dua li peb PVC ntawv xaiv
Qhov thib ob, uas yog cov khoom yas nyuaj tshaj plaws?
Muaj zog thiab tawv Acrylic thiab polycarbonate yog pob tshab yas uas muaj zog dua ntau lwm yam meej yas ntawv cov ntaub ntawv thiab feem ntau siv hauv kev tsim vaj tsev glazing daim ntawv thov thaum pom kev zoo thiab cov yam ntxwv zoo dua qub.
Puas yog PVC lom rau kov?
PVC muaj txaus ntshai tshuaj ntxiv nrog rau phthalates, txhuas, cadmium, thiab/lossis organotins, uas tuaj yeem yog tshuaj lom rau koj tus menyuam txoj kev noj qab haus huv. Cov no tshuaj lom additives tuaj yeem tawm los yog evaporate rau saum huab cua thaum lub sij hawm, ua rau muaj kev phom sij tsis tsim nyog rau menyuam yaus.
Pom zoo:
Cov neeg tshawb xyuas muaj sijhawm ntev npaum li cas tom qab hnub tshaj tawm tsab ntawv tshaj tawm los ua kom tiav cov ntaub ntawv tshawb xyuas los ntawm kev sib sau ua ke cov ntaub ntawv tshawb xyuas zaum kawg?
Cov ntaub ntawv txheeb xyuas ua tiav thiab zaum kawg yuav tsum tau muab sib dhos rau khaws cia raws li hnub tsis pub dhau 45 hnub tom qab hnub tshaj tawm daim ntawv tshaj tawm (hnub ua tiav cov ntaub ntawv)
Koj yuav txiav txim siab li cas yog tias cov kua qaub muaj zog lossis tsis muaj zog?
Yog hais tias ib qho acid tsis tau teev tseg ntawm no, nws yog ib qho tsis muaj zog acid. Nws tuaj yeem yog 1% ionized lossis 99% ionized, tab sis nws tseem raug cais raws li cov kua qaub tsis muaj zog. Txhua cov kua qaub uas dissociates 100% rau hauv ions yog hu ua ib tug muaj zog acid. Yog hais tias nws tsis dissociate 100%, nws yog ib tug qaug zog acid
Txoj cai twg yog txhawm rau muab lub zog saib xyuas muaj zog ntxiv dag zog rau kev ua txhaum cai lij choj tiv thaiv kev ua phem thiab tiv thaiv kev lag luam nyiaj txiag?
COV PHOOJ YWG ACT TEEV NTUJ TEEB MEEM NTAWM TXOJ CAI TXOJ CAI TSHIAB
Yuav ua li cas tshwm sim thaum koj titrate ib tug muaj zog acid nrog ib tug muaj zog puag?
Lub hom phiaj ntawm lub zog acid-muaj zog hauv paus titration yog los txiav txim siab qhov concentration ntawm acidic tov los ntawm titrating nws nrog ib tug yooj yim tov ntawm paub concentration, los yog vice versa, kom txog thaum neutralization tshwm sim. Yog li ntawd, cov tshuaj tiv thaiv ntawm cov kua qaub thiab lub hauv paus muaj zog yuav ua rau dej thiab ntsev
Vim li cas cov duab ntawm titration nkhaus txawv rau titration ntawm muaj zog acid vs muaj zog puag thiab qaug zog acid vs muaj zog puag?
Cov duab dav dav ntawm titration nkhaus yog tib yam, tab sis pH ntawm qhov sib npaug sib txawv. Hauv qhov tsis muaj zog acid-muaj zog titration, pH yog ntau dua 7 ntawm qhov sib npaug. Hauv qhov muaj zog acid-tsis muaj zog titration, pH tsawg dua 7 ntawm qhov sib npaug