ʻO kekahi o nā waiwai koʻikoʻi o Polyvinyl Chloride (PVC):
- ʻAiʻa:ʻOkoʻa loa ka PVC i ka hoʻohālikelike ʻia me ka hapa nui o nā plastics (kaumaha kikoʻī ma kahi o 1.4)
- Hoʻokele waiwai:Loaʻa ka PVC a maʻalahi.
- ʻoʻoleʻa:Kūlana maikaʻi ka PVC paʻa no ka paʻakikī a me ka lōʻihi.
- ikaika:Loaʻa ka ikaika tensile maikaʻi loa i ka PVC paʻa.
ʻO ka Polyvinyl Chloride kahi mea "thermoplastic" (e kū'ē i ka "thermoset"), pili i ke ʻano o ka pane ʻana o ka plastic i ka wela. Lilo nā mea Thermoplastic i ka wai ma ko lākou wahi heheʻe (he laulā no PVC ma waena o ka haʻahaʻa haʻahaʻa 100 degere Celsius a me nā waiwai kiʻekiʻe e like me 260 degere Celsius ma muli o nā mea hoʻohui). ʻO kahi hiʻohiʻona pono nui e pili ana i nā thermoplastics ʻo ia ka hiki ke hoʻomehana ʻia a hiki i ko lākou wahi heheʻe, hoʻoluʻu a hoʻomaha hou me ka ʻole o ka hōʻino nui ʻana. Ma kahi o ke ahi, ʻo nā thermoplastics e like me ka polypropylene liquefy e hiki ai iā lākou ke hoʻopili maʻalahi iā lākou a laila hana hou ʻia. ʻO ka ʻokoʻa, hiki ke hoʻomehana ʻia nā plastik thermoset i hoʻokahi wale nō (maʻamau i ka wā o ke kaʻina hana hoʻoheheʻe). ʻO ka hoʻomehana mua ka mea e hoʻonohonoho ai i nā mea thermoset (e like me ka epoxy 2-hapa), ka hopena i kahi hoʻololi kemika hiki ʻole ke hoʻohuli. Inā ʻoe e hoʻāʻo e wela i ka plastic thermoset i kahi wela kiʻekiʻe i ka lua o ka manawa, e ʻā wale nō ia. Hoʻopilikia kēia ʻano i nā mea thermoset i nā moho no ka hana hou ʻana.
Hāʻawi ʻo PVC i nā ʻano noi like ʻole a me nā pono ma waena o nā ʻoihana he nui i kāna mau ʻano paʻa a maʻalahi. ʻO ka mea kūikawā, loaʻa iā Rigid PVC kahi kiʻekiʻe kiʻekiʻe no ka plastic, e hana i ka paʻakikī a ikaika loa. Hiki ke loaʻa a maʻalahi hoʻi, i hui pū ʻia me ka hapa nui o nā hiʻohiʻona lōʻihi o ka plastics, he koho maʻalahi ia no nā noi ʻoihana e like me ke kūkulu ʻana.
He ʻano paʻa loa ka PVC a me ka māmā, e lilo ia i mea nani no ke kūkulu ʻana, plumbing, a me nā noi ʻoihana ʻē aʻe. Hoʻohui ʻia, ʻo kāna ʻike chlorine kiʻekiʻe e hana ai i ke ahi ahi, kahi kumu ʻē aʻe i loaʻa ai ka kaulana ma nā ʻoihana like ʻole.
Ka manawa hoʻouna: Dec-01-2022