UL無鹵電線-萊蕪UL無鹵電線-聊城UL無鹵電線

具(ju)(ju)有(you)(you)低煙無(wu)鹵(lu)(lu)LSHF（Low Smoke Halogen Free）特性(xing)(xing)的(de)電(dian)(dian)纜(lan)(lan)(lan)于20世紀(ji)70年代推出，***初用于安裝在(zai)小型密閉空間中，如地鐵(tie)、隧道、礦井、船(chuan)舶和(he)(he)潛艇等場(chang)合(he)。隨著(zhu)(zhu)傳(chuan)統電(dian)(dian)纜(lan)(lan)(lan)在(zai)火(huo)災中產生(sheng)煙霧(wu)的(de)毒性(xing)(xing)和(he)(he)腐(fu)(fu)蝕(shi)性(xing)(xing)的(de)風險越來(lai)越突(tu)出，低煙無(wu)鹵(lu)(lu)特性(xing)(xing)電(dian)(dian)纜(lan)(lan)(lan)的(de)使用范圍擴(kuo)展(zhan)到(dao)越來(lai)越多的(de)場(chang)所(suo)，比如對關(guan)鍵設(she)備和(he)(he)系統連續(xu)運行(xing)要求較高的(de)數據中心、緊急呼叫中心和(he)(he)電(dian)(dian)信交換站(zhan)；以(yi)及學校、醫院(yuan)和(he)(he)養老院(yuan)等無(wu)法有(you)(you)效迅速撤離人(ren)員(yuan)的(de)特殊場(chang)所(suo)。雖然含有(you)(you)鹵(lu)(lu)化成(cheng)分的(de)電(dian)(dian)纜(lan)(lan)(lan)絕(jue)緣和(he)(he)護套具(ju)(ju)有(you)(you)的(de)阻燃(ran)性(xing)(xing)，但在(zai)遇火(huo)后(hou)會(hui)釋放具(ju)(ju)有(you)(you)毒性(xing)(xing)和(he)(he)腐(fu)(fu)蝕(shi)性(xing)(xing)的(de)煙氣。遇火(huo)后(hou)釋放的(de)鹵(lu)(lu)素和(he)(he)普遍(bian)存在(zai)的(de)氫氣反應，形成(cheng)鹵(lu)(lu)化氫，遇水(shui)后(hou)形成(cheng)鹽(yan)酸(suan)、或。這些(xie)酸(suan)可能(neng)會(hui)腐(fu)(fu)蝕(shi)重(zhong)要結構、部件和(he)(he)設(she)備，并增加毒性(xing)(xing)。含鹵(lu)(lu)的(de)電(dian)(dian)纜(lan)(lan)(lan)在(zai)燃(ran)燒時還會(hui)顯著(zhu)(zhu)提高一(yi)氧化碳(tan)含量，其潛在(zai)危險更(geng)高。

實踐證明，在這些商(shang)業和(he)住宅建筑中(zhong)使用(yong)(yong)(yong)低(di)煙無鹵(lu)(lu)(lu)電(dian)纜有助于(yu)減少(shao)設備損壞，降低(di)毒性煙氣(qi)的(de)(de)釋放，同時成(cheng)為涉及(ji)環境和(he)可(ke)持續因素的(de)(de)綠(lv)色(se)環保新建項(xiang)目的(de)(de)合理選擇。在美國使用(yong)(yong)(yong)低(di)煙無鹵(lu)(lu)(lu)電(dian)纜可(ke)能(neng)會(hui)滿(man)足美國綠(lv)色(se)建筑委員會(hui)LEED（Leadership in Energy and Environmental Design）綠(lv)色(se)建筑倡議的(de)(de)項(xiang)目信貸(dai)條件(jian)。目前電(dian)纜產品除使用(yong)(yong)(yong)金屬導(dao)體外，重要組成(cheng)是聚(ju)合物(wu)材料(liao)。幾十年來，電(dian)纜的(de)(de)絕緣和(he)護套材料(liao)中(zhong)通常會(hui)添加溴化物(wu)等鹵(lu)(lu)(lu)化成(cheng)分來改善阻(zu)燃特性。絕緣和(he)護套所使用(yong)(yong)(yong)的(de)(de)聚(ju)氯乙(yi)烯(xi)(xi)（PVC），氟化乙(yi)烯(xi)(xi)丙烯(xi)(xi)和(he)氯化聚(ju)乙(yi)烯(xi)(xi)都含(han)有鹵(lu)(lu)(lu)素。其他(ta)用(yong)(yong)(yong)于(yu)電(dian)纜中(zhong)的(de)(de)化合物(wu)也有可(ke)能(neng)含(han)有其他(ta)鹵(lu)(lu)(lu)化成(cheng)分的(de)(de)樹脂、添加劑和(he)色(se)母。

UL無鹵電線-萊蕪UL無鹵電線-聊城UL無鹵電線。

無鹵電子線由(you)電(dian)(dian)(dian)子(zi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)延伸而(er)來，符合(he)歐(ou)盟(meng)ROHS標準下的環保要求，通常(chang)用于弱(ruo)電(dian)(dian)(dian)工程，如電(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)氣(qi)(qi)設(she)備的內(nei)部(bu)(bu)布線(xian)(xian)(xian)(xian)(xian)(xian)(xian)等，電(dian)(dian)(dian)子(zi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)可(ke)用于電(dian)(dian)(dian)氣(qi)(qi)設(she)備布線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、發(fa)(fa)光(guang)二極管(guan)(guan)模塊線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、家用電(dian)(dian)(dian)器(qi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、汽車連接(jie)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、端子(zi)連接(jie)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、機械內(nei)部(bu)(bu)連接(jie)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、照明燈具線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、電(dian)(dian)(dian)子(zi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)、變壓器(qi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、電(dian)(dian)(dian)路(lu)(lu)板連接(jie)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、發(fa)(fa)光(guang)二極管(guan)(guan)燈條線(xian)(xian)(xian)(xian)(xian)(xian)(xian)等。機械損(sun)(sun)(sun)傷：無(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)被重物損(sun)(sun)(sun)壞(huai)(huai)，被挖掘機意外損(sun)(sun)(sun)壞(huai)(huai)，敷(fu)設(she)時(shi)(shi)無(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)過度彎曲，絕緣受損(sun)(sun)(sun)，運(yun)輸時(shi)(shi)無(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)嚴重擠壓，絕緣層和保護(hu)層受損(sun)(sun)(sun)，底層下沉，直埋電(dian)(dian)(dian)纜拉(la)得太大等，絕緣因均而(er)損(sun)(sun)(sun)壞(huai)(huai)，甚至無(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)也可(ke)能斷裂，為了避(bi)免電(dian)(dian)(dian)纜的機械損(sun)(sun)(sun)壞(huai)(huai)，可(ke)以使(shi)用架空(kong)無(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)，無(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)沿墻敷(fu)設(she)時(shi)(shi)，應隱 蔽，地埋應留有明顯標志，禁(jin)止在無(wu)鹵(lu)(lu)(lu)電(dian)(dian)(dian)子(zi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)周圍取土。

絕緣受潮：由于無(wu)(wu)(wu)鹵(lu)(lu)電(dian)(dian)(dian)(dian)(dian)子線(xian)路(lu)(lu)(lu)施(shi)工(gong)工(gong)藝差(cha)，濕氣(qi)侵入電(dian)(dian)(dian)(dian)(dian)子線(xian)路(lu)(lu)(lu)內部(bu)(bu)，或(huo)無(wu)(wu)(wu)鹵(lu)(lu)電(dian)(dian)(dian)(dian)(dian)子線(xian)路(lu)(lu)(lu)內保護層(ceng)損壞，濕氣(qi)進入無(wu)(wu)(wu)鹵(lu)(lu)電(dian)(dian)(dian)(dian)(dian)子線(xian)路(lu)(lu)(lu)；鉛包(bao)電(dian)(dian)(dian)(dian)(dian)纜敷設在震(zhen)源周圍，因長期振(zhen)動(dong)而疲勞開裂，無(wu)(wu)(wu)鹵(lu)(lu)電(dian)(dian)(dian)(dian)(dian)子線(xian)路(lu)(lu)(lu)的外皮被(bei)腐蝕并(bing)漂浮，由于制造質量(liang)不好，鉛包(bao)上有小孔或(huo)裂紋；鑒于這些現象，應(ying)(ying)加強無(wu)(wu)(wu)鹵(lu)(lu)電(dian)(dian)(dian)(dian)(dian)子線(xian)路(lu)(lu)(lu)外層(ceng)的維護，并(bing)按期在外保護層(ceng)上涂一層(ceng)瀝青(qing)。過電(dian)(dian)(dian)(dian)(dian)壓(ya)：無(wu)(wu)(wu)鹵(lu)(lu)電(dian)(dian)(dian)(dian)(dian)子線(xian)路(lu)(lu)(lu)絕緣層(ceng)因大(da)氣(qi)過電(dian)(dian)(dian)(dian)(dian)壓(ya)或(huo)內部(bu)(bu)過電(dian)(dian)(dian)(dian)(dian)壓(ya)而擊穿(chuan)，特(te)別(bie)是系統內部(bu)(bu)過電(dian)(dian)(dian)(dian)(dian)壓(ya)會(hui)導致多根電(dian)(dian)(dian)(dian)(dian)纜同時(shi)擊穿(chuan)，在這方面(mian)，應(ying)(ying)安裝避雷器(qi)。

絕緣(yuan)老化：在無(wu)鹵(lu)(lu)(lu)電子(zi)線路(lu)(lu)的長期(qi)運(yun)行(xing)(xing)過程中，由于散熱不良(liang)或過載，絕緣(yuan)材(cai)料的電氣和機械功能變差(cha)，絕緣(yuan)層變脆或斷裂，如果是這(zhe)種情況(kuang)，應定期(qi)對無(wu)鹵(lu)(lu)(lu)素(su)電子(zi)線路(lu)(lu)進行(xing)(xing)預防性耐壓測(ce)試(shi)，在無(wu)鹵(lu)(lu)(lu)電子(zi)線路(lu)(lu)絕緣(yuan)降(jiang)低不符合安全運(yun)行(xing)(xing)條件，應更換新電纜。

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