ʻO ka nui o ka ʻike ʻia e pili ana i ka lakio o ke kaumaha o kahi mea i kona nui i ʻike ʻia. ʻO ka nui o ka ʻike ʻia ka nui maoli me ka nui o ka pore pani. Pili ia i ka lakio o ka hakahaka i noho ʻia e kahi mea ma lalo o ka hana a kahi ikaika waho i ka nui o ka mea, i hōʻike pinepine ʻia ma nā kilokani no ka mika cubic (kg/m³). Hiki iā ia ke hōʻike i ka porosity, ka paʻakikī, ka elasticity a me nā waiwai ʻē aʻe o ka mea. No nā mea me nā ʻano maʻamau, hiki ke ana pololei ʻia ka nui; no nā mea me nā ʻano ʻokoʻa, hiki ke sila ʻia nā pores me ka sila ʻana o ka wax, a laila hiki ke ana ʻia ka nui ma o ka hoʻokahe ʻana. Hoʻohana pinepine ʻia ka nui o ka ʻike ʻia ma ke ʻano maoli o ka mea, ʻo ia hoʻi, ke ʻano maloʻo i mālama ʻia i ka lewa no ka manawa lōʻihi. No nā mea hoʻokaʻawale ʻia me ka rubber foamed a me ka plastic, ʻokoʻa ka lakio o nā pehu pani-cell i nā ʻāpana rubber a me ka plastic, a aia kahi pae density me ka conductivity thermal haʻahaʻa loa.
Hiki i ka porosity kiʻekiʻe ke hoʻokaʻawale pono; akā ʻo ka haʻahaʻa loa o ka density hiki ke alakaʻi maʻalahi i ka deformation a me ka haki. I ka manawa like, piʻi ka ikaika compression me ka piʻi ʻana o ka density, e hōʻoiaʻiʻo ana i ke kūpaʻa lōʻihi o ka mea. Ma ke ʻano o ka conductivity thermal, ʻo ka liʻiliʻi o ka density, ʻo ka haʻahaʻa o ka conductivity thermal a ʻoi aku ka maikaʻi o ka insulation thermal; akā inā kiʻekiʻe loa ka density, piʻi ka hoʻoili wela kūloko a emi ka hopena insulation thermal. No laila, i ke koho ʻana i nā mea insulation thermal, pono e noʻonoʻo pono i ko lākou density i ʻike ʻia e hōʻoia i ke kaulike ʻana o nā waiwai like ʻole e hoʻokō i nā pono o nā hiʻohiʻona hoʻohana like ʻole.
ʻO ka nui o ka nui e pili ana i ka nui o ka mea ponoʻī, ʻo ia hoʻi, ka lakio o ka hakahaka i noho ʻia e kahi mea i kona nuipa. I loko o nā mea hoʻokaʻawale wela, pili pinepine ia i ka lakio o ka ea pore kūloko a me ka nuipa maoli no kēlā me kēia anakahi leo, i hōʻike ʻia ma nā kilokani no ka mika cubic (kg/m³). E like me ka nui o ka mea i ʻike ʻia, ʻo ka nui o ka nui kekahi o nā palena koʻikoʻi no ka loiloi ʻana i ka hana o nā mea hoʻokaʻawale wela, hiki ke hōʻike pinepine i ke kaumaha, ka omo wai, ka hoʻokaʻawale wela a me nā ʻano ʻē aʻe o ka mea.
No laila, ʻoiai ke hōʻike nei ka nui o ka ʻike maka a me ka nui o ka nui i ka nui a me ka porosity o nā mea hoʻomehana wela, he mau ʻokoʻa maopopo ko lākou:
1. Nā manaʻo like ʻole
ʻO ke ʻano ʻike nui o nā mea hoʻomehana wela e loiloi nui i nā waiwai o ka mea e like me ka porosity a me ka elasticity, a hiki ke hōʻike i ka pilina kūlike ma waena o ka ea a me ka nui maoli i loko o ka mea.
ʻO ka nui o ka paʻapū e pili ana i ka nui o ka mea insulation ponoʻī, a ʻaʻole ia e pili i kekahi mau waiwai o ka ʻano kūloko.
2. Nā ʻano helu like ʻole
Hoʻomaulia pinepine ʻia ka nui o nā mea insulation ma ke ana ʻana i ka nuipa a me ka leo o ka laʻana, ʻoiai ua helu ʻia ka nuipa ma ke ana ʻana i ke kaumaha o kahi laʻana mea o ka leo i ʻike ʻia.
3. Aia paha he mau hewa
ʻOiai ʻo ka helu ʻana o ka nui o ka mea insulation e pili ana i ka nui i noho ʻia e ka hāpana i hoʻopaʻa ʻia, ʻaʻole hiki iā ia ke hōʻike maikaʻi i ke ʻano holoʻokoʻa o ka mea. I ka manawa like, i ka wā he mau lua a i ʻole nā mea ʻē i loko o ka mea, hiki ke loaʻa nā hewa i ka helu ʻana o ka nui o ka mea. ʻAʻohe o kēia mau pilikia i ka nui o ka nui a hiki ke hōʻike pololei i ka nui a me ke kaumaha o ka mea insulation.
ʻAno ana
ʻAno hoʻoneʻe: No nā mea me nā ʻano maʻamau, hiki ke ana pololei ʻia ka nui; no nā mea me nā ʻano ʻokoʻa, hiki ke sila ʻia nā pores me ke ʻano sila wax, a laila hiki ke ana ʻia ka nui me ke ʻano hoʻoneʻe.
ʻAno Pycnometer: No kekahi mau mea, e like me nā mea kalapona, hiki ke hoʻohana ʻia ke ʻano pycnometer, me ka toluene a i ʻole n-butanol ma ke ʻano he hopena maʻamau no ke ana ʻana, a i ʻole hiki ke hoʻohana ʻia ke ʻano hoʻoneʻe kinoea e hoʻopiha i nā micropores me ka helium a hiki i ka wā ʻaʻole e hoʻopili hou ʻia.
Nā wahi noi
He nui nā noi o ka apparent density i ka ʻepekema mea. No ka laʻana, i loko o nā huahana insulation rubber foam flexible a me nā huahana insulation plastic, ʻo ke kumu nui o ka hoʻāʻo apparent density ʻo ia ka loiloi ʻana i kāna hana density a me ka hōʻoia ʻana e kūlike ana kāna insulation thermal a me nā waiwai mechanical i nā kūlana. Eia kekahi, hoʻohana ʻia ka apparent density e loiloi i nā waiwai kino o nā mea a me ka hana o nā mea i nā noi ʻenekinia.
Inā piʻi ka nui o ka mānoanoa a piʻi ka ʻāpana laholio a me ka palakiko, e piʻi paha ka ikaika o ka mea a me ka mea hoʻolimalima pulu, akā e piʻi mau ana ka conductivity thermal a e hōʻino ka hana insulation thermal. Loaʻa iā Kingflex kahi kiko kaulike piha kūpono i ka pilina hoʻopaʻa like ma waena o ka conductivity thermal haʻahaʻa, ka mea hoʻolimalima pulu kiʻekiʻe, ka nui kūpono loa o ka ʻike a me ka ikaika haehae, ʻo ia hoʻi, ka nui kūpono.
Ka manawa hoʻouna: Ian-18-2025
