China 3 Inch fenicha caster vhiri Hofisi chair kutsiva Manufacturer uye Exporter |RONGCHUAN

3 Inch fenicha caster vhiri Hofisi cheya kutsiva

Inokodzera macheya ehofisi, anonyanya kufarirwa paAmazon neAlibaba, akagadziridzwa kurongedza anogona kupihwa

Iyo inotsika inogadzirwa nePU, iyo isingazokuvadza pasi pehuni, kusapfeka-kusagadzikana uye hupenyu hurefu hwebasa

Inoratidzira chaiyo kaviri bhora mabearings, yakanyarara uye inofamba yakatsetseka

Optional nebhureki, Thread stem kana plug-in stem, iri nyore kuisa

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Polyurethane (PU), iro zita rakazara ipolyurethane, inhengo yepolymer.Yakagadzirwa naOtto Bayer muna 1937. Polyurethane yakakamurwa kuva mapoka maviri: polyester type uye polyether type.Anogona kugadzirwa kuva mapurasitiki epolyurethane (kunyanya mapurasitiki ane furo), polyurethane fibers (inonzi spandex kuChina), polyurethane rubber uye elastomers.

Yakapfava polyurethane inonyanya kuve thermoplastic linear chimiro, iyo ine kugadzikana kuri nani, makemikari kuramba, kusimba uye michina zvivakwa kupfuura PVC furo zvinhu, uye ine kushoma kudzvanya deformation.Iyo ine yakanaka yekupisa yekupisa, kuvharidzira inzwi, kushomeka kuramba uye anti-virus kuita.Naizvozvo, inoshandiswa sekurongedza, kuvharidzira ruzha, sefa zvinhu.

Rigid polyurethane plastiki ine huremu huremu, yakanakisa mukudzivirira inzwi uye kupisa kwemafuta, makemikari kuramba, yakanaka magetsi emagetsi, kugadzirwa nyore, uye kunyura kwemvura.Inonyanya kushandiswa mukuvaka, mota, indasitiri yendege, thermal insulation structural zvinhu.

Kuita kwe polyurethane elastomer kuri pakati pepurasitiki nerabha, mafuta kuramba, kupfeka kuramba, kushomeka kwekushisa, kuramba kuchembera, kuoma kwakanyanya uye elasticity.Inonyanya kushandiswa muindasitiri yeshangu uye indasitiri yezvokurapa.Polyurethane inogona zvakare kushandiswa kugadzira anonamira, machira, synthetic dehwe, nezvimwe.

Polyurethane yakaonekwa muma1930s.Mushure memakore anoda kusvika makumi masere ekuvandudzwa kwetekinoroji, chinyorwa ichi chave kushandiswa zvakanyanya mumunda wemidziyo yepamba, kuvaka, zvinodiwa zvezuva nezuva, zvekufambisa, uye midziyo yemumba.