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防靜電面料知識

文章出處:   責任編輯:   發布時間:2017-05-04 11:24:00    點擊數:-   【

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防(fang)靜(jing)(jing)電(dian)(dian)(dian)工作服,防(fang)靜(jing)(jing)電(dian)(dian)(dian)工作制(zhi)(zhi)(zhi)服是(shi)指(zhi)為防(fang)止服裝上的(de)(de)(de)靜(jing)(jing)電(dian)(dian)(dian)積(ji)累,用防(fang)靜(jing)(jing)電(dian)(dian)(dian)織(zhi)物(wu)(wu)(wu)(wu)為面料(liao)而(er)縫制(zhi)(zhi)(zhi)的(de)(de)(de)制(zhi)(zhi)(zhi)服。防(fang)靜(jing)(jing)電(dian)(dian)(dian)織(zhi)物(wu)(wu)(wu)(wu)是(shi)在紡(fang)織(zhi)時,大致(zhi)等間隔地或(huo)(huo)均勻地混入導(dao)(dao)(dao)(dao)電(dian)(dian)(dian)纖(xian)維(wei)(wei)或(huo)(huo)防(fang)靜(jing)(jing)電(dian)(dian)(dian)合(he)成(cheng)(cheng)纖(xian)維(wei)(wei)或(huo)(huo)兩者混合(he)交(jiao)織(zhi)而(er)成(cheng)(cheng)的(de)(de)(de)織(zhi)物(wu)(wu)(wu)(wu)。導(dao)(dao)(dao)(dao)電(dian)(dian)(dian)纖(xian)維(wei)(wei)是(shi)指(zhi)全部或(huo)(huo)部分使用金屬或(huo)(huo)有(you)機(ji)物(wu)(wu)(wu)(wu)的(de)(de)(de)導(dao)(dao)(dao)(dao)電(dian)(dian)(dian)材料(liao)或(huo)(huo)亞導(dao)(dao)(dao)(dao)電(dian)(dian)(dian)材料(liao)制(zhi)(zhi)(zhi)成(cheng)(cheng)的(de)(de)(de)纖(xian)維(wei)(wei)的(de)(de)(de)總稱,其體積(ji)電(dian)(dian)(dian)阻率(lv)ρv∼介于¹04∼¹09Ω/cm之間。接照導(dao)(dao)(dao)(dao)電(dian)(dian)(dian)成(cheng)(cheng)分在纖(xian)維(wei)(wei)中的(de)(de)(de)分布情況又可將導(dao)(dao)(dao)(dao)電(dian)(dian)(dian)纖(xian)維(wei)(wei)分為導(dao)(dao)(dao)(dao)電(dian)(dian)(dian)成(cheng)(cheng)分均一型(xing)、導(dao)(dao)(dao)(dao)電(dian)(dian)(dian)成(cheng)(cheng)分覆蓋型(xing)和(he)導(dao)(dao)(dao)(dao)電(dian)(dian)(dian)成(cheng)(cheng)分復合(he)型(xing)³類(lei)。目前,絕(jue)大多(duo)數防(fang)靜(jing)(jing)電(dian)(dian)(dian)織(zhi)物(wu)(wu)(wu)(wu)是(shi)采用導(dao)(dao)(dao)(dao)電(dian)(dian)(dian)纖(xian)維(wei)(wei)制(zhi)(zhi)(zhi)作的(de)(de)(de),其中尤以導(dao)(dao)(dao)(dao)電(dian)(dian)(dian)成(cheng)(cheng)分復合(he)型(xing),即復合(he)纖(xian)維(wei)(wei)使用最多(duo)。

在(zai)化(hua)纖織物中加入(ru)導(dao)電(dian)(dian)(dian)纖維制(zhi)成的(de)防靜電(dian)(dian)(dian)工(gong)作制(zhi)服,其(qi)消(xiao)電(dian)(dian)(dian)是基于電(dian)(dian)(dian)荷的(de)泄漏與中和兩種機理。當(dang)接(jie)(jie)地(di)時,織物上(shang)的(de)靜電(dian)(dian)(dian)除(chu)因導(dao)電(dian)(dian)(dian)纖維的(de)電(dian)(dian)(dian)暈(yun)放(fang)電(dian)(dian)(dian)被中和之外,還可經由導(dao)電(dian)(dian)(dian)纖維向大(da)地(di)泄放(fang);不接(jie)(jie)地(di)時則借助于導(dao)電(dian)(dian)(dian)纖維微弱(ruo)的(de)電(dian)(dian)(dian)暈(yun)放(fang)電(dian)(dian)(dian)而消(xiao)電(dian)(dian)(dian)。

實踐表明,防靜(jing)(jing)(jing)電(dian)(dian)工作(zuo)制(zhi)(zhi)服(fu)(fu)可(ke)(ke)(ke)有效地抑制(zhi)(zhi)服(fu)(fu)裝靜(jing)(jing)(jing)電(dian)(dian),消除或(huo)減小靜(jing)(jing)(jing)電(dian)(dian)放(fang)電(dian)(dian)危(wei)害。人(ren)體(ti)在(zai)進(jin)行各種活動時(shi)(shi)服(fu)(fu)裝上的(de)靜(jing)(jing)(jing)電(dian)(dian)壓值已大(da)大(da)超過許多(duo)靜(jing)(jing)(jing)電(dian)(dian)敏(min)感器件的(de)靜(jing)(jing)(jing)電(dian)(dian)放(fang)電(dian)(dian)損壞(huai)閾(yu)值,那么(me)在(zai)觸及或(huo)接近這些(xie)元(yuan)器件時(shi)(shi)就有可(ke)(ke)(ke)能(neng)(neng)造(zao)成敏(min)感器件損壞(huai)。還(huan)需指出,一般(ban)認為(wei)穿純(chun)棉(mian)(mian)(mian)工作(zuo)制(zhi)(zhi)服(fu)(fu)可(ke)(ke)(ke)防止服(fu)(fu)裝靜(jing)(jing)(jing)電(dian)(dian)積累,因而就安全。實際這種觀點具有片面性,只有當(dang)空氣(qi)相對濕(shi)度(du)高(gao)(gao)于(yu)(yu)50%時(shi)(shi)才(cai)基本如此;而當(dang)相對濕(shi)度(du)比較低時(shi)(shi),純(chun)棉(mian)(mian)(mian)制(zhi)(zhi)品(pin)的(de)帶(dai)電(dian)(dian)量明顯增大(da)。試驗表明,在(zai)相對濕(shi)度(du)低于(yu)(yu)30%時(shi)(shi),純(chun)棉(mian)(mian)(mian)織(zhi)物(wu)(wu)的(de)帶(dai)電(dian)(dian)量與滌綸相當(dang);而當(dang)相對濕(shi)度(du)低于(yu)(yu)20%時(shi)(shi),棉(mian)(mian)(mian)織(zhi)物(wu)(wu)的(de)帶(dai)電(dian)(dian)量甚至會高(gao)(gao)于(yu)(yu)某些(xie)化纖織(zhi)物(wu)(wu)。所(suo)以在(zai)氣(qi)候干燥地區(qu),不(bu)能(neng)(neng)指望(wang)在(zai)任何情況下都能(neng)(neng)用純(chun)棉(mian)(mian)(mian)制(zhi)(zhi)品(pin)消除服(fu)(fu)裝靜(jing)(jing)(jing)電(dian)(dian)危(wei)害。基于(yu)(yu)以上原因,為(wei)有效防止人(ren)體(ti)靜(jing)(jing)(jing)電(dian)(dian)的(de)靜(jing)(jing)(jing)電(dian)(dian)放(fang)電(dian)(dian)危(wei)害,操作(zuo)者必須穿用防靜(jing)(jing)(jing)電(dian)(dian)工作(zuo)制(zhi)(zhi)服(fu)(fu)。

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