Kuv ntseeg tias ntau tus neeg paub txog cov khoom ntawm PVC. Niaj hnub no, cov khoom siv PVC tau siv dav hauv peb lub neej, sib npaug siv hauv kev lag luam thiab kev kho mob. Rau PVC, ntau tus phooj ywg tseem muaj lus nug ntau. Kuv tsis paub tias cov khoom siv PVC yog ua los ntawm, thiab kuv tsis paub tias nws yog tawv los yog mos? Dab tsi yog qhov txawv ntawm hard pvc thiab soft pvc? Cia peb muab cov lus nug no ua ke kom nkag siab cov ntsiab lus tseem ceeb ua ke!
Cov khoom ntawm pvc yog dab tsi? Puas yog tawv los yog mos?
Nws tuaj yeem muab faib ua tawv PVC thiab mos PVC. Lub npe tshawb fawb ntawm pvc yog polyvinyl chloride, uas yog cov khoom tseem ceeb ntawm cov yas thiab feem ntau siv los ua cov khoom yas. Nws yog pheej yig thiab dav siv. Qhov sib txawv loj tshaj plaws yog tias lawv muaj qhov sib txawv hardness. PVC tawv tsis muaj softener, uas muaj siab hardness thiab yooj yim rau khaws cia, thaum mos PVC muaj softener thiab muaj softness zoo.
Dab tsi yog qhov txawv ntawm hard pvc thiab soft pvc?
1. Cov khoom xyaw sib txawv
Txawm hais tias lawv cov ntaub ntawv tseem ceeb yog tag nrho cov pvc, lawv muaj qee qhov sib txawv hauv kev sib xyaw. Hauv kev tsim cov pvc mos mos, qee cov softeners tau ntxiv, uas ua rau nws cov khoom tiav muaj qhov yooj yooj yim, zoo bendability, foldable nyob rau hauv ib nrab, curlable, thiab yooj yim rau cov duab. Hard PVC tsis ntxiv softeners hauv kev tsim khoom, yog li nws tsis yooj yim rau cov duab, tsis yooj yim, thiab tsis tuaj yeem curled.
2. Cov ntawv thov sib txawv
Vim nws txoj kev yooj yim zoo, mos PVC tuaj yeem siv los ua cov ntaub pua rooj, cov plag tsev, qab nthab, thiab lwm yam, thaum tawv PVC feem ntau yog siv los ua cov thawv yas, PVC kav, profiles, thiab lwm yam.
3. Cov yam ntxwv sib txawv
Los ntawm qhov pom ntawm tus yam ntxwv, mos pvc muaj cov kab zoo stretch, extensibility, kub tsis kam thiab kub tsis kam, yog li nws kuj siv tau los ua pob tshab ntaub pua rooj. Kev khiav hauj lwm kub ntawm hard PVC feem ntau tsis tshaj 40 degrees. Yog tias qhov kub thiab txias heev, cov khoom siv PVC tawv yuav raug puas tsuaj.
Tag nrho cov nyob rau hauv tag nrho cov, lub ntsiab sib txawv ntawm mos pvc thiab tawv pvc yog lawv hardness. Thaum peb yuav, peb tuaj yeem paub qhov txawv ntawm lawv qhov nyuaj thiab kev xav.