Pamene mavuto a zowonjezera a ku China adasindikizidwa, kwa eni nyumba ambiri iwo adafunsanso funso lalikulu: Kodi mawotchi anga opangidwa ndi wowonjezera amapangidwa ndi chiyani? Nanga bwanji za mgwirizano womwe umagwiritsidwa ntchito popanga zitsulo pakati pa zowonongeka?
Maseŵera a Rock ndi Paper
Pambuyo pa zaka zamatsenga zamakono ndi chitukuko cha mankhwala, ndizosangalatsa kuzindikira kuti makoma athu adakali zopangidwa ndi zipangizo ziwiri zosavuta: miyala ndi pepala.
Ngakhale kowonjezera kowonjezera kudzakhala ndi zowonjezera, makampani ambiri amapanga mankhwala kuchokera ku:
- Gypsum : Kuphatikiza pakati pa 70% ndi 90% ya pepala lakuda, gypsum yakhala yowonjezera ya mankhwala ouma. Kupanda kutchedwa calcium sulphate, gypsum ndi yotsika mtengo kwanga, yotsimikizira moto, komanso imapereka katundu wabwino kwambiri. Mtundu woyaka moto X wowuma wouma umakhala ndi fiberglass yowonjezeredwa ku gypsum. Mosiyana ndi asibesitosi, yomwe imadziwika kuti imayambitsa matenda oopsa omwe amatchedwa mesothelioma, fumbi la gypsum si vuto lalikulu la thanzi.
- Selasi : Mpaka 10% ya mawonekedwe a drywall. Malasilasi ndi pepala lomwe likuyang'anizana kumbali zonse ziwiri zowuma. Komabe, kuwonjezeka kwawuni sikukuyang'aniridwa mu pepala koma kumatope a fiberglass omwe sagwiritsidwe ndi nkhungu. Zitsanzo zikuphatikizapo USG Sheetrock® Mold Tough ndi GP's DensArmor Plus®. Ndipotu, ngati mutagwiritsa ntchito tepi yamalojekiti monga FibaTape, mukugwiritsa ntchito njira zomwezo zomwe zimagwiritsidwa ntchito popanga zowonongeka.
Pambuyo pa zipangizo ziŵirizi, zambiri zimakhala monga:
- Crystalline Silica
- Vermiculite
- Potaziyamu Sulfate
- Osaka
- Mica
- Sera
- Acic acid
Zowonjezera Zomangamanga
Chifukwa chophatikizira , kapena matope, chophimba ma tepi pakati pa mapepala a drywall amawoneka ngati gypsum, kawirikawiri amaganiza kukhala gypsum.
Si.
- Calcium Carbonate : Mwinamwake amadziwika ngati miyala yamwala, iyi ndiyo mchere wambiri m'matope owuma.
- Talcum : Kodi phulusa lakuda liri ndi mphamvu ya kukhalapo kwanu kokonzanso? Kodi mukupitiriza kulemba zolepheretsa kuti fumbi lisalowe mbali zina za nyumba yanu? Chabwino, ikani talcum. Mchere wamtengo wapatali, womwe umadziwika ngati ufa wa mwana, umagwiritsidwa ntchito pamgwirizano wothandizira chifukwa mapuloteni ake amatha kugona ndipo amatsutsana. Talc ndi chinthu chomwe chimathandiza mchenga wanu wa matope kukhala wosalala ngati galasi. Pakati pa 5% ndi 15% ya mgwirizano waphatikizidwa ndi talc.
Sulfure ndi Strontium Simulandiridwa
Sulfure anapezeka mu Chinese zowonongeka, koma palibe m'mphepete mwachitsulo cha US. Strontium inapezeka mwapamwamba kwambiri mu Chinese drywall kuposa ku US drywall.
Acetaldehyde ndi formaldehyde zinapezeka muzitsamba zowonjezera zachi China ndi ku US. Koma ku US drywall, zinthu izi zinali mkati mwa malire (osati mu Chinese drywall).
US Brands of Drywall Ndi Oyera
Sheetrock® brand wallboardboard, yopangidwa ndi USG Corporation, ndi mtundu wotchuka kwambiri wa drywall. Ngati muli ndi wallboard kuchokera ku USG, mungatsimikize kuti palibe "mtundu wa Chitchaina" mavuto adzakhala ndi inu wallboard. USG ikusimba kuti zaka 90 zapangidwe, zopangidwa zake sizinapeze mavuto aliwonse omwe amapezeka ku Chinese drywall.
Ngati izo sizikutitsimikizirani, pamene tinkalankhula ndi USG, amatiuza kuti "USG's Sheetrock® brandboardboardboard yapangidwa kumpoto kwa America. USG sanayambe kupanga makina a zipangizo ku China ndipo sanabwererenso kapena kubwezeretsanso makanema opangidwa ku China."
Phunziro lophatikizidwa kuchokera ku US Consumer Product Safety Commission ndi mabungwe anayi a US a federal, makina a drywall a US sanapezekanso ngati ofanana ndi Chinese drywall.