M'ntchito zathu zatsiku ndi tsiku komanso kufunsa kwamakasitomala, tapeza kuti pali mafunso ambiri okhudza -miyezo yosasunthika ya "anti-anti silicone foam board" pakati pa anthu. Kodi ndi "anti-static" bwanji? Kodi miyeso yovomerezeka ndi yotani? Kodi ndi zofunikira ziti pamitundu yosiyanasiyana yogwiritsira ntchito? Lero, tiyeni tifotokoze momveka bwino.
一, Zizindikiro Zapakati: Kukaniza ndiye chinsinsi
Chizindikiro chachikulu choyezera -mawonekedwe a static ndi resistivity. Malingana ndi njira yomwe panopa ikudutsa, timaganizira kwambiri magawo awiri:
1.Surface Resistivity (surface Resistivity) : kukana kwa zinthu pamene mphamvu ikuyenda pamwamba pake. Unit: Ohm (Ω)
2. Volume Resistivity (Volume Resistivity) : kukana kwa chinthu pamene panopa chikudutsamo. Chigawo: Ohm ·cm (Ω·cm).
Pazida zokhala ngati mphira wa silikoni wokhala ndi thovu, kuchuluka kwa mphamvu nthawi zambiri kumakhala chizindikiro chofunikira kwambiri chifukwa kumatha kuwonetsa bwino mphamvu zonse zamagetsi.
2, Mainstream Standards ndi Class Classification Panopa.
Palibe mulingo umodzi wokha wokhazikika pamagawo a anti-mabakiteriya padziko lonse lapansi. Komabe, machitidwe ndi miyezo yotsatirayi imatchulidwa kwambiri ndikuvomerezedwa:
1. Miyezo ya ESD Association (ESDA).- The Electrostatic Protection System yovomerezeka kwambiri Miyezo yopangidwa ndi bungwe la Electrostatic Discharge Association of the United States ndi maumboni ovomerezeka kwambiri pamakampani opanga zamagetsi. Muyezo wake wa ANSI/ESD S20.20 umayika zida m'magulu atatu, zomwe ndizofunikira kwambiri kuti timvetsetse za anti-giredi yoletsa:
1) Zipangizo zopangira (Conductive) : kupirira kwapamwamba: zosakwana 1 x 10⁴ Ω (ie,<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)Static dissipative material (static Dissipative) : resistivity surface: 1 x 10⁴ Ω mpaka 1 x 10¹¹ Ω volume resistivity: 1 x 10⁴ Ω·cm mpaka 1 x 10¹¹ Ω·cm mbali: iyi ndi giredi yofala kwambiri ya silikoni} ya anti foam {9}! Ikhoza kutulutsa ma static charges pansi pa liwiro lokhazikika komanso pang'onopang'ono, kupewa kutulutsa mafunde akulu nthawi yomweyo, ndikuteteza mosamala zida zambiri zamagetsi.
3)Zinthu zotchingira: Kusagwira ntchito kwa pamwamba: zazikulu kuposa kapena zofanana ndi 1 x 10¹² Ω (ie, Zazikulu kuposa kapena zofanana ndi 1,000,000,000,000 Ω) Kulimbana ndi voliyumu: zazikulu kuposa kapena zofanana ndi 1 x 10¹² Ω·cm Mawonekedwe amagetsi: Chaji yamagetsi siyingayende mozungulira ndi kuyimilira. Labala wamba silikoni umagwera m'gulu ili.
2. Miyezo ina yofanana
ASTM D257: American Society for Testing and Equipment standard, yomwe ndi njira yoyesera yoyezera kukana kwachindunji kapena kachitidwe kazinthu zotetezera.
IEC 61340: Muyezo wa International Electrotechnical Commission, wofanana ndi muyezo wa ESDA, ndi njira yodziwika padziko lonse lapansi yachitetezo chamagetsi.
Miyezo ya asitikali monga MIL-PRF-87893: Ali ndi zofunika zokhwimitsa kwambiri komanso zachindunji pakugwira ntchito kwa zida zotsutsana ndi malo.
Anti-static standard for anti-static silicone foam boards makamaka zimatengera ngati voliyumu yake/surface resistivity igwera mkati mwa "static dissipation" pakati pa 10⁴ mpaka 10¹¹ Ω·cm. Ndi gawo laling'ono liti-lomwe mungasankhe zimadalira mphamvu ya electrostatic ya chinthu chomwe mukufuna kuteteza ndi miyezo yamakampani.