Ke Kuleana o nā HFO Blowing Agents i ka Spray Foam Production: He Loiloi Hoʻohālikelike me nā HFC Blowing Agents

Ua haku ʻia ka huʻa pīpī me nā mea like ʻole, i kāna kaʻina hana, ʻo ka mea puhi kekahi o nā mea nui loa, pono no ka hoʻokumu ʻana i ke ʻano huʻa, ka conductivity thermal o ka mea a inā he huahana aloha kūlohelohe ia e pili nui ana i ka mea puhi. I ka wā ma mua, ua hoʻohana pinepine ʻia nā hydrofluorocarbons (HFCS) ma ke ʻano he mea puhi ma muli o ko lākou pono kiʻekiʻe a me ka versatility. Eia nō naʻe, ke hoʻohuli nei nā hopohopo kaiapuni i ka nānā ʻana i nā hydrofluoroolefins (HFOS), i ʻike ʻia he koho ʻē aʻe e hoʻomau mau ana.

Ke hoʻomaopopo nei i ka HFCNā mea puhi

ʻO HFCS kekahi o nā hui organik he nui i haku ʻia me ka hydrogen, fluorine a me ke kalapona. He kemika versatile nā ​​HFCS i hiki ke hoʻohana ʻia i ka hoʻoluʻu a me ka refrigeration, nā propellants aerosol, a me ka hana huʻa. ʻOiai ʻaʻole hōʻeha pololei ka HFCS i kahi kūloko, ua hoʻokaʻawale ʻia lākou he mau kinoea ʻōmaʻomaʻo super me ka hiki ke hoʻomehana honua kiʻekiʻe (GWP). Loaʻa iā lākou kahi ola lewa he 15 a 29 mau makahiki, i loko o ia manawa e omo ai lākou i ka wela a hāʻawi nui i ka hoʻomehana honua. Loaʻa i ka HFCS kahi ozone depleting potential (ODP) o ka zero, he pono ia ma mua o nā mea puhi kahiko e like me chlorofluorocarbons (CFCS). Eia nō naʻe, mamao loa lākou mai ka launa pū ʻana me ke kaiapuni, ʻoiai ʻo ko lākou hopena i ka loli o ke aniau hiki ke piʻi aʻe i 100 mau manawa ma mua o ke kalapona dioxide (CO₂).

Ka Hoʻololi ʻana i HFONā mea puhi

He hui organik unsaturated ka HFO i haku ʻia me ka hydrogen, fluorine a me ke kalapona, ʻoiai ua saturated ka HFC. ʻO Hydrofluoroolefin (HFO) kahi mea puhi hou i hoʻolālā ʻia e hōʻemi i nā hemahema o ke kaiapuni e pili ana me HFCS. Loaʻa i nā Hfos nā hydrogen, fluorine, a me nā ʻātoma kalapona like me HFCS, akā ʻokoʻa loa ko lākou ʻano kemika. ʻAʻole e like me HFCS, he GWP haʻahaʻa loa ko Hfos a ʻaʻohe ODP. ʻO ke ʻano kēia, ʻaʻole luku nā Hfos i ka papa ozone a he hopena liʻiliʻi ko lākou i ka hoʻomehana honua. Eia kekahi, he pōkole loa ke ola o ka HFO i ka lewa, kahi e hōʻemi hou ai i kona hopena i ke kaiapuni.

Ke hoʻohālikelike nei i nā mea puhi HFC a me HFO i ka Spray Foam

Ma ke ʻano o ka hoʻohana ʻana, ua like ke kuleana o nā mea puhi HFC a me HFO i ka hana huʻa. Eia nō naʻe, he nui nā pono o HFO e lilo ai ia i koho mua:

Ka hopena o ke kaiapuniMe ka ʻole ODP a me ka GWP haʻahaʻa, ʻoi aku ka liʻiliʻi o ka hōʻino ʻana o nā Hfos i ke kaiapuni ma mua o HFCS.

PalekanaʻAʻole hiki ke lapalapa ka HFO, haʻahaʻa ka conductivity, ʻaʻohe mea ʻawahia, a ʻaʻole hoʻokuʻu i nā hui organik volatile (VOC), e hōʻoiaʻiʻo hou ana i ka maikaʻi o ka ea.

HanaMālama ʻo HFO i nā waiwai insulation e like me HFC, e hōʻoiaʻiʻo ana he maikaʻi nā waiwai insulation thermal o ka huʻa.

ʻO ka hoʻoikaika ʻana e hoʻohana i ka ʻenehana huʻa pīpī HFO ka neʻe hou loa e hoʻopau i nā kemika i ʻike ʻia e hōʻino i ka ozone a me ke aniau, a ʻo ka hoʻololi ʻana i nā mea puhi HFO e hōʻike ana i kahi neʻe ākea i ka ʻoihana i nā hana hoʻomau. Ke piʻi nei ke kaomi hoʻoponopono a ke ʻimi nei nā ʻoihana i nā hopena ʻōmaʻomaʻo, ʻo HFO paha ke koho maʻamau no nā noi huʻa pīpī, e hōʻoiaʻiʻo ana i ka insulation maikaʻi a me ka hōʻemi ʻana i ka hopena o ke kaiapuni.