Taw qhia rau Cov Qauv rau Radiation-Cov Ntaub Ntawv Tiv Thaiv

Taw qhia rau Cov Qauv rau Radiation-Cov Ntaub Ntawv Tiv Thaiv

 

 

 

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Radiation-shielding fabrics tau muab faib ua ob pawg loj: electromagnetic shielding fabrics (civilian, industrial microwave, and tub rog applications) thiab ionizing radiation shielding fabrics (lead-composite material for X/rays). Cov ntaub ntawv no tau them los ntawm cov txheej txheem sib tw ntawm cov qauv hauv tebchaws, cov qauv kev lag luam, cov qauv hauv pab pawg, thiab cov tub rog tshwj xeeb hauv Suav teb, thaum tseem ua raws li cov qauv kev xeem thoob ntiaj teb.

 

Ntawm no, peb tsuas yog qhia txog EMF cov qauv hluav taws xob.

 

Tuam Tshoj Core National Standards

 

(1) Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob (Cov khaub ncaws tiv thaiv kev tiv thaiv cev xeeb tub, Txhua hnub Electromagnetic Shielding Knit Fabrics)

1. GB/T 22583-2009 "Knitted Radiation-Shielding Textiles"

- Daim ntawv thov: Nyiaj fiber ntau thiab hlau fiber ntau knitted radiation-shielding fabrics thiab garments; low-frequency electromagnetic tiv thaiv lub xov tooj ntawm tes, Wi-Fi, thiab cov khoom siv hauv tsev

- Cov ntsiab lus tseem ceeb:

1. Kev xeem ntau zaus: 30 MHz txog 3 GHz

2. Kev tiv thaiv kev ua tau zoo grading: Ntau dua lossis sib npaug rau 20 dB (qib pej xeem pej xeem), Ntau dua lossis sib npaug rau 30 dB ( qib premium)

3. Lub cev thiab tshuaj lom neeg muaj zog: tensile lub zog, ntxuav ceev, formaldehyde, thiab tsw yuav tsum ua raws li GB 18401 Class B cov qauv rau kev sib cuag ntawm daim tawv nqaij.

4. Durability: shielding attenuation Tsawg dua los yog sib npaug rau 10 dB tom qab 50 tus qauv ntxuav cycles

2. GB/T 33615-2017 "Textiles-Test Method for Electromagnetic Shielding Effectiveness of Apparel"

- Tib lub teb chaws tus qauv rau tag nrho - tsoos tsho kuaj; zaus ntau 80 MHz txog 6 GHz; siv txoj kev anechoic chamber los simulate tiag -lub ntiaj teb no hnav tej yam kev mob thiab ntsuam xyuas los ntawm seams, necklines, thiab kaw

3. GB/T 44892-2025 "Cov Lus Qhia Tshwj Xeeb rau Electromagnetic Shielding Textiles" (yuav siv tau txij Lub Xya Hli 1, 2025)

- Universal baseline yuav tsum tau rau txhua yam ntawm electromagnetic shielding textiles; nthuav dav ntau ntawm 30 MHz txog 40 GHz; rau kev siv pej xeem, qhov nruab nrab tiv thaiv kev ua tau zoo (SE) Ntau dua lossis sib npaug ntawm 30 dB hauv 1-6 GHz ntau yam, nrog tsawg dua lossis sib npaug li 8% kev ua haujlwm tsis zoo tom qab 50 lub voj voog ntxuav

 

 

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(II) Industrial Electromagnetic Shielding Fabrics (Electronic factories, computer chav, shielding curtains, conductive backing fabric)

1. GB/T 30139-2013 "Txhua yam kev mob rau kev lag luam Electromagnetic shielding Fabrics"

1. Muaj feem xyuam rau: Nyiaj-plated, npib tsib xee-plated, stainless hlau fiber ntau shielding fabrics, shielding pads, shielding curtains

2. Cov ntsiab lus tseem ceeb: Kev tiv thaiv nto, tiv thaiv kev ua tau zoo, acid thiab alkali tsis kam, hnav tsis kam, nplaim hluav taws kub (yeem); Lub teeb-load thiab hnyav-load qib kev lag luam

2. GB/T 30142-2013 "Test Method for Shielding Effectiveness of Planar Materials"

1. Laboratory benchmark detection method for fabrics, flange coaxial method, sib npaug rau ASTM D4935 ntawm Teb Chaws Asmeskas, kev lag luam ntaub kuaj cov hauv paus.

3. GB / T 34938-2017 "Cov Lus Qhia Tshwj Xeeb rau Planar Electromagnetic Shielding Materials"

1. Unified zoo li, conductivity, thiab shielding kev faib cov cai rau shielding fabrics, shielding films, hlau meshes, thiab lwm yam ntawm cov ntaub ntawv planar.

 

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(III) Kev Ua Haujlwm Microwave Radiation Protection Clothing (Hwj chim, radar, xov tooj cua zaus ua haujlwm, yuav tsum ua raws li lub teb chaws tus qauv)

 

GB 23463-2025 "Cov khaub ncaws tiv thaiv - Microwave Radiation Protection Clothing" (Ua tiav rau 09/01/2026)

· Raws li txoj cai ntawm Ministry of Emergency Management rau kev tiv thaiv tus kheej, muaj feem xyuam rau siab -frequency microwaves, radar base stations, high-voltage power transformation operation neeg ua hauj lwm;

· Kev Xeem: Txoj kev tiv thaiv chav tsev, tag nrho -frequency band shielding efficiency Ntau dua los yog sib npaug li 40 dB, kub tsis kam, roj tsis kam, tsim kua muag lub zog, thiab kev sib koom ua ke tiv thaiv kev ruaj ntseg yuav tsum tau kuaj;

· Raws li qhov yuav tsum tau muaj cov cuab yeej tiv thaiv kev tiv thaiv kev ua haujlwm, lub Hoobkas yuav tsum tau tshaj tawm hom kev tshuaj xyuas.

 

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III. International Mainstream Standards

 

1. ASTM D4935-18 (USA): Tus qauv thoob ntiaj teb rau kev sim coaxial shielding ntawm cov ntaub tiaj tus, sib npaug rau hauv GB / T30142

2. EN 50364: 2010 (EU): Tus qauv kev tiv thaiv khaub ncaws tiv thaiv electromagnetic teb ntawm tib neeg lub cev, yuav tsum siv rau kev xa tawm mus rau EU, nrog rau cov nqi txwv rau tag nrho cov zaus ntawm 0Hz txog 300GHz

3. IEEE Std 299.1: High-frequency shielding effectiveness test for 300MHz–40GHz, siv rau kev kuaj ntaub ntawm tub rog thiab millimeter-wave khoom