Ka nānā ʻana o ke ʻano hoʻomohala o ka ʻoihana PVC (polyvinyl chloride) o Kina i 2021, e hoʻomau ka mana hana.

Ka nānā ʻana o ke ʻano hoʻomohala o ka ʻoihana PVC (polyvinyl chloride) o Kina i 2021, e hoʻomau ka mana hana.

1. He hiʻohiʻona o ka hoʻomohala ʻana i ka ʻoihana PVC

ʻO ka polyvinyl chloride (PVC) he polymer i hana ʻia e ka polymerization o ka vinyl chloride monomer (VCM) i nā mea hoʻomaka e like me nā peroxides a me nā pūhui azo a i ʻole ma lalo o ka hana o ka māmā a me ka wela e like me ke ʻano o ka polymerization radical manuahi.mahele nui.

Hoʻokaʻawale nui ʻia nā resins polyvinyl chloride i nā resins kumu nui a hoʻopili i nā resins e like me kā lākou hoʻohana ʻana: nā resins kumu nui (G resins) he resins i hui pū ʻia me ka nui o nā plasticizers a i ʻole nā ​​mea hoʻohui e hana i nā pauka maloʻo a pulu no ka hana ʻana;Hoʻopili pinepine ʻia nā resins paste (P Resin) me ka plasticizer e hana i kahi resin paste no ka hoʻohana ʻana;aia pū kekahi PVC huila resin, ʻo ia ka resin PVC e pani ana i kahi ʻāpana o ka resin paʻi ma ka hui ʻana i ka wā e hoʻokumu ai i kahi plastisol PVC.

ʻO ka papa inoa nui o ka resin PVC

ʻO nā ʻano hana nui o ka resin PVC e pili ana i ke ʻano suspension, ke ʻano nui, ke ʻano emulsion, ke ʻano hoʻonā a me ke ʻano polymerization micro-suspension.Mai kahi hiʻohiʻona honua, ʻo ke ʻano o ka hoʻokuʻu ʻana ke ʻano hana nui o ka resin kumu nui PVC, aʻo nā ʻano hana o ka PVC paste resin he ʻano emulsion a me ke ʻano micro-suspension polymerization.Ma muli o nā kaʻina hana like ʻole, ʻaʻole hiki ke hoʻololi i ka mana hana o nā resins ʻelua i kekahi.

2. ʻOihana kaulahao o ka ʻoihana PVC

ʻO ke kaʻina hana PVC ka "calcium carbide method" a me "ethylene method", a ʻo kāna mau mea maka he lanahu a me ka aila ʻaila.Hoʻohana ka hapa nui o nā ʻāina o ka honua i ke ala ʻaila a me ke kinoea.No ka mea ʻilihune ʻo Kina i ka aila a waiwai i ka lanahu, ʻo ke kaʻina hana PVC o koʻu ʻāina i hoʻokumu nui ʻia ma ke ʻano calcium carbide.

kaulahao ʻoihana PVC

ʻO ka mea maka no ka hana PVC ma ke ʻano calcium carbide he lanahu.Mai ka makahiki 2012, ua hōʻike ʻia ke ʻano o ka hāʻule mua ʻana o ka lanahu maka a koʻu ʻāina.Wahi a ka National Bureau of Statistics, e piʻi ka nui o ka lanahu maka i ka 4.13 biliona tons ma 2021, he piʻi o 228 miliona tons i hoʻohālikelike ʻia me 2020.

ʻO ka mea maka no ka hana ʻana o PVC ma ke ʻano ethylene ʻo ia ka aila ʻaila.Wahi a ka National Bureau of Statistics, e hoʻopuka koʻu ʻāina i ka 198.98 miliona tons o ka aila ʻaila ma 2021, he piʻi o 4.06 miliona tons i hoʻohālikelike ʻia me 2020. Ma waena o lākou, 16.47 miliona mau ʻaila ʻaila i hana ʻia i Dekemaba, hoʻokahi makahiki ma- ka hoʻonui makahiki o 1.7%.