Ma kā mākou hana i kēlā me kēia lā a me nā nīnau a nā mea kūʻai aku, ua ʻike mākou he nui nā nīnau e pili ana i nā kūlana anti-static o "anti-static silicone foam board" i waena o nā kānaka. Pehea ka "anti-static"? He aha nā kūlana hoʻāʻo mana? He aha nā koi ʻokoʻa no nā hiʻohiʻona noiʻi like ʻole? I kēia lā, e wehewehe pono kākou.
一, Nā hōʻailona kumu: ʻO ke kūpaʻa ke kī
ʻO ka hōʻailona koʻikoʻi no ke ana ʻana i ka hana anti-static he resistivity. E like me ke ala e hele ai kēia manawa, e nānā nui mākou i nā ʻāpana ʻelua:
1.Palekana ʻili (surface Resistivity) : ke kūʻē ʻana o kahi mea i ka wā e kahe ana ke au ma kona ʻili. Huina: Ohm (Ω)
2. Volume Resistivity (volume Resistivity) : ke kū'ē o kekahi mea i ka wā e hele ai ke au. Huina: Ohm ·cm (Ω·cm).
No nā mea porous e like me foamed silicone rubber, volume resistivity ka mea maʻamau i mea koʻikoʻi koʻikoʻi no ka mea hiki iā ia ke hōʻike piha i ka conductivity uila holoʻokoʻa o ka mea.
2, Nā Kūlana Nui a me ka Hoʻohālikelike Papa i kēia manawa.
ʻAʻohe maʻamau hoʻokahi i hoʻohui ʻia no ka hoʻokaʻawale ʻana o nā mea anti-static ma ka honua. Eia nō naʻe, ʻōlelo nui ʻia nā ʻōnaehana koʻikoʻi a me nā kūlana maʻamau:
1. Nā Kūlana ESD Association (ESDA).- ʻO ka Pūnaehana Palekana Electrostatic mana loa ʻO nā maʻamau i hoʻokumu ʻia e ka Electrostatic Discharge Association o ʻAmelika Hui Pū ʻIa, ʻo ia nā kuhikuhi mana loa i ka ʻoihana uila. ʻO kāna maʻamau ANSI/ESD S20.20 hoʻokaʻawale i nā mea i ʻekolu ʻāpana, he mea koʻikoʻi ia no ko mākou hoʻomaopopo ʻana i ka papa anti-static:
1) Mea hoʻokele (Conductive): ka pale ʻana o ka ʻili: emi iho ma mua o 1 x 10⁴ Ω (ʻo ia hoʻi,<10,000 Ω) volume resistivity: Less than 1 x 10⁴ Ω·cm. Characteristics: The charge dissipates extremely fast, which may cause rapid discharge of electrostatic sensitive components (CDM damage). It is often used in situations where grounding is required and charges need to be discharged quickly, such as anti-static floors and table MATS.
2) Mea hoʻoheheʻe Static (static Dissipative): ka pale ʻana o ka ʻili: 1 x 10⁴ Ω i ka 1 x 10¹¹ Ω leo resistivity: 1 x 10⁴ Ω·cm i ka 1 x 10¹¹ Ω·cm hiʻohiʻona: ʻo ia ka papa maʻamau o ka papa anti foam -static. Hiki iā ia ke hoʻokuʻu i nā koina paʻa i ka honua me ka wikiwiki a hiki ke hoʻopaʻa ʻia, e pale ana i ka hana ʻana o nā au nui koke, a pēlā e pale pono ai i ka hapa nui o nā mea uila.
3) Mea hoʻolalelale: Paʻa i ka ʻili: ʻoi aʻe ma mua a i ʻole like me 1 x 10¹² Ω (ʻo ia hoʻi, ʻoi aku ka nui ma mua o a i ʻole like me 1,000,000,000,000 Ω) Resistance volume: ʻoi aku ka nui a i ʻole like me 1 x 10¹² Ω·cm Nā hiʻohiʻona: ʻAʻole hiki ke holo ka uila uila a paʻa. Hāʻule ka rubber silicone maʻamau i kēia ʻāpana.
2. Nā kūlana maʻamau ʻē aʻe
ASTM D257: American Society for Testing and Materials standard, ʻo ia ke ʻano hoʻāʻo maʻamau no ke ana ʻana i ke kū pololei o kēia manawa a i ʻole ka hana ʻana o nā mea insulating.
IEC 61340: He maʻamau International Electrotechnical Commission, e like me ka maʻamau ESDA, he ʻōnaehana maʻamau i ʻike ʻia i ka honua no ka pale electrostatic.
Nā kūlana koa e like me MIL-PRF-87893: Loaʻa iā lākou nā koi koʻikoʻi a kikoʻī no ka hana ʻana i nā mea anti-static.
ʻO ka maʻamau -kūʻokoʻa no nā-paʻa ʻōhua silicone static e hilinaʻi nui ʻia i ka hāʻule ʻana o kona leo a me ka pale ʻana o ka ʻili i loko o ka laulā "static dissipation" o 10⁴ a i 10¹¹ Ω·cm. ʻO ka ʻaoʻao kikoʻī -ʻano āu e koho ai e pili ana i ka ʻike electrostatic o ka huahana āu e makemake ai e pale a me nā kūlana ʻoihana.