Chilichonse Chimene Muyenera Kudziwa Zokhudza Polyvinyl Chloride (PVC) Pulasitiki

Polyvinyl Chloride (PVC) ndi imodzi mwazinthu zosunthika komanso zogwiritsidwa ntchito kwambiri padziko lonse lapansi. Imadziwika kuti ndi yolimba, yotsika mtengo, komanso kukana zinthu zachilengedwe, PVC imagwiritsidwa ntchito m'mafakitale osiyanasiyana, kuyambira pakumanga mpaka kuchipatala. M'nkhaniyi, tiwona zomwe PVC ndi, katundu wake, ntchito, ndi zina zambiri.

Kodi Polyvinyl Chloride (PVC) ndi chiyani?

Polyvinyl Chloride (PVC) ndi polima wopangidwa kuchokera ku polymerization ya vinyl chloride. Idapangidwa koyamba mu 1872 ndipo idayamba kupanga malonda mu 1920s ndi BF Goodrich Company. PVC imagwiritsidwa ntchito kwambiri pantchito yomanga, koma ntchito zake zimakhalanso zikwangwani, chisamaliro chaumoyo, nsalu, ndi zina zambiri.

PVC imapezeka m'mitundu iwiri yayikulu:

1. PVC yolimba (UPVC)- PVC yopanda pulasitiki ndi chinthu cholimba, chokhazikika chomwe chimagwiritsidwa ntchito popanga mipope, mafelemu a zenera, ndi ntchito zina zamapangidwe.
2. PVC yosinthika- Zosinthidwa ndi mapulasitiki, PVC yosinthika ndiyofewa, yopindika, ndipo imagwiritsidwa ntchito kwambiri pazinthu monga kutchinjiriza waya wamagetsi, pansi, ndi machubu osinthika.

Makhalidwe a Polyvinyl Chloride (PVC)

Makhalidwe a PVC amapangitsa kuti ikhale yokondedwa pazinthu zambiri:

• Kuchulukana: PVC ndi yolimba kuposa mapulasitiki ena ambiri, okhala ndi mphamvu yokoka pafupifupi 1.4.
• Kukhalitsa: PVC imagonjetsedwa ndi kuwonongeka kwa chilengedwe, mankhwala, ndi kuwala kwa UV, zomwe zimapangitsa kuti zikhale zoyenera kwa zinthu zokhalitsa.
• Mphamvu: PVC yolimba imakhala ndi mphamvu zamakokedwe komanso kuuma, pomwe PVC yosinthika imasunga kusinthasintha ndi mphamvu.
• Recyclability: PVC imapangidwanso mosavuta ndipo imadziwika ndi resin code "3," yomwe imalimbikitsa kukhazikika.

Zithunzi za PVC

• Kutentha Kwambiri: 100 ° C mpaka 260 ° C (212 ° F mpaka 500 ° F), malingana ndi zowonjezera.
• Kulimba kwamakokedwe: PVC yosinthika imachokera ku 6.9 mpaka 25 MPa, pamene PVC yolimba imakhala yamphamvu kwambiri pa 34 mpaka 62 MPa.
• Kutembenuka kwa Kutentha: PVC imatha kupirira kutentha mpaka 92°C (198°F) isanapunduke.
• Kukaniza kwa Corrosion: PVC imalimbana kwambiri ndi mankhwala ndi zamchere, zomwe zimapangitsa kukhala chisankho chokhazikika pamafakitale osiyanasiyana.

Mitundu ya PVC: Yolimba vs. Flexible

PVC imapezeka makamaka m'mitundu iwiri:

1. Zithunzi za PVC(UPVC): Fomu iyi ndi yolimba ndipo imagwiritsidwa ntchito nthawi zambiri pomanga monga mapaipi a mapaipi ndi siding. Nthawi zambiri amatchedwa "vin
2. PVC yosinthika: Zotheka powonjezera mapulasitiki, PVC yosinthika imagwiritsidwa ntchito popinda kapena kusinthasintha kumafunika, monga kutchinjiriza kwa zingwe zamagetsi, zida zamankhwala, ndi pansi.

Chifukwa chiyani PVC imagwiritsidwa ntchito nthawi zambiri?

Kutchuka kwa PVC kumachokera ku zakemtengo wotsika, kupezeka,ndiosiyanasiyana katundu. PVC yolimba imayamikiridwa makamaka pamapangidwe ake chifukwa champhamvu komanso kulimba kwake, pomwe kufewa ndi kusinthasintha kwa PVC kumapangitsa kuti ikhale yabwino pazinthu zomwe zimafunikira kupindika, monga machubu azachipatala kapena pansi.

Kodi PVC imapangidwa bwanji?

PVC nthawi zambiri amapangidwa kudzera m'modzi mwa njira zitatu za polymerization:

• Kuyimitsidwa polymerization
• Emulsion polymerization
• Kuchuluka kwa polymerization

Njirazi zimaphatikizapo ma polymerization a vinyl chloride monomers kukhala polyvinyl chloride yolimba, yomwe imatha kusinthidwa kukhala zinthu zosiyanasiyana.

PVC mu Prototype Development: CNC Machining, 3D Printing, ndi jekeseni akamaumba

Ngakhale PVC ndi chinthu chodziwika bwino m'mafakitale osiyanasiyana, imakhala ndi zovuta zina zikafika pakupanga ndi kupanga:

• CNC Machining: PVC imatha kudulidwa pogwiritsa ntchito makina a CNC, koma imakhala yowononga komanso yowononga, kotero zida zapadera (monga zodulira zitsulo zosapanga dzimbiri) zimafunikira kuti zisawonongeke.
• Kusindikiza kwa 3D: PVC siigwiritsidwa ntchito kawirikawiri kusindikiza kwa 3D chifukwa cha kuwononga kwake. Kuonjezera apo, imatulutsa mpweya wapoizoni ikatenthedwa, kupangitsa kuti ikhale yocheperako pazifukwa izi.
• Jekeseni Kumangira: PVC ikhoza kukhalajekeseni wowumbidwa, koma njirayi imafunikira mpweya wabwino komanso zida zolimbana ndi dzimbiri chifukwa chotulutsa mpweya woipa ngati hydrogen chloride (HCl).

Kodi PVC Ndi Yowopsa?

PVC ikhoza kumasulidwautsi wapoizoniukatenthedwa kapena kutenthedwa, makamaka m'mafakitale monga kusindikiza kwa 3D, CNC Machining, ndi jekeseni. Zinthuzo zimatha kutulutsa mpweya woipa ngatichlorobenzenendihydrogen kloride, zomwe zingawononge thanzi. Ndikofunikira kugwiritsa ntchito mpweya wabwino komanso zida zodzitetezera pakukonza.

Ubwino wa PVC

• Zotsika mtengo: PVC ndi imodzi mwamapulasitiki otsika mtengo omwe alipo.
• Kukhalitsa: Imakana kukhudzidwa, mankhwala, komanso kuwonongeka kwa chilengedwe.
• Mphamvu: PVC imapereka mphamvu zowoneka bwino, makamaka mu mawonekedwe ake okhwima.
• Kusinthasintha: PVC ikhoza kuumbidwa, kudula, ndikupangidwa kukhala mitundu yosiyanasiyana ya zinthu, ndikupangitsa kuti ikhale yosinthika pazinthu zosiyanasiyana.

Zoyipa za PVC

• Kutentha Kutentha: PVC ili ndi kutentha kosasunthika kosasunthika, zomwe zikutanthauza kuti imatha kupindika kapena kutsika pa kutentha kwakukulu pokhapokha ngati zokhazikika zikuwonjezeredwa panthawi yopanga.
• Kutulutsa Kwapoizoni: Ikatenthedwa kapena kusungunuka, PVC imatulutsa utsi woipa, womwe umafunika kuchitidwa mosamala ndi ma protocol achitetezo.
• Chikhalidwe Chowononga: PVC ikhoza kuwononga zida zachitsulo ndi zida ngati sizikugwiridwa bwino.

Mapeto

Polyvinyl Chloride (PVC) ndi chinthu chosunthika modabwitsa chomwe chimapereka ndalama zogulira, mphamvu, komanso kukana zinthu zachilengedwe. Mitundu yake yosiyanasiyana, yokhazikika komanso yosinthika, imalola kuti igwiritsidwe ntchito m'mafakitale ambiri, kuyambira pakumanga mpaka kuchipatala. Komabe, ndikofunikira kumvetsetsa kuopsa kwaumoyo ndi zovuta zomwe zingachitike pakukonza PVC, makamaka zokhudzana ndi utsi wake komanso kuwononga kwake. Ikagwiridwa bwino, PVC ndi chinthu chamtengo wapatali chomwe chikupitiriza kugwira ntchito yofunikira pakupanga ndi zomangamanga zamakono.