Ndeapi Hunhu hwePolyvinyl Chloride (PVC)?

Zvimwe zvezvakanyanya kukosha zvePolyvinyl Chloride (PVC) ndezvi:

1. Density:PVC yakaoma kwazvo kana ichienzaniswa nemapurasitiki mazhinji (chaiyo giravhiti yakatenderedza 1.4)
2. Economics:PVC inowanikwa nyore uye yakachipa.
3. Kuoma:Rigid PVC inomira zvakanaka pakuoma uye kusimba.
4. Simba:Rigid PVC ine yakanakisa tensile simba.

Polyvinyl Chloride ndeye "thermoplastic" (kusiyana ne "thermoset") zvinhu, zvine chokuita nenzira iyo plastiki inopindura nayo kupisa. Thermoplastic zvinhu zvinova mvura pazvinonyunguduka (mutsetse wePVC uri pakati pe100 degrees celcius yakadzikira uye nepamusoro se260 degrees Celsius zvichienderana nezvinowedzerwa). Chinhu chekutanga chinobatsira nezve thermoplastics ndechekuti inogona kudziyirwa kusvika painonyungudika, yatonhodzwa, uye kupiswa zvakare pasina kushatisa kwakanyanya. Panzvimbo pekupisa, thermoplastics senge polypropylene liquefy inovatendera kuti vaumbwe jekiseni nyore uye vozoshandiswazve. Kusiyana neizvi, thermoset mapurasitiki anogona kungopisa kamwe chete (kazhinji panguva yekuumba jekiseni). Kupisa kwekutanga kunokonzera kuti thermoset zvinhu zvigadzike (zvakafanana ne-2-part epoxy), zvichiita kuti kushanduka kwemakemikari kusingagoni kuchinjwa. Kana ukaedza kupisa purasitiki ye thermoset kune tembiricha yepamusoro kechipiri, yaingopisa chete. Hunhu uhu hunoita kuti thermoset zvinhu zvive zvisina kufanira kukwikwidzwa kudzokorodza.

PVC inopa akasiyana siyana ekushandisa uye zvakanakira kune akawanda maindasitiri mune ese ari maviri akaomarara uye anochinjika mafomu. Kunyanya, Rigid PVC ine yakakwira density yepurasitiki, ichiita kuti ive yakaoma zvakanyanya uye kazhinji yakasimba zvakanyanya. Inowanikwa zvakare nyore uye ine hupfumi, iyo, yakasanganiswa neakawanda mapurasitiki 'anogara kwenguva refu maitiro, anoita kuti ive sarudzo iri nyore kune akawanda maindasitiri ekushandisa sekuvaka.

PVC ine yakanyanyisa kusimba hunhu uye huremu, ichiiita inoyevedza zvinhu zvekuvaka, pombi dzemvura, uye mamwe maindasitiri ekushandisa. Pamusoro pezvo, iyo yakakwira chlorine yemukati inoita kuti zvinhu zvidzivirirwe nemoto, chimwe chikonzero nei yakawana mukurumbira wakadai mumaindasitiri akasiyana.