UL無鹵電線-梁平UL無鹵電線-彭水苗族土家族UL無鹵電線

具有(you)(you)低(di)煙(yan)無鹵(lu)(lu)(lu)LSHF（Low Smoke Halogen Free）特(te)(te)性(xing)(xing)的(de)電纜(lan)于20世紀70年代推出，***初用于安裝在(zai)小型密(mi)閉空間中(zhong)(zhong)(zhong)，如地鐵、隧道、礦井、船舶和潛(qian)艇等場(chang)合。隨著(zhu)傳(chuan)統電纜(lan)在(zai)火災中(zhong)(zhong)(zhong)產生煙(yan)霧的(de)毒(du)性(xing)(xing)和腐(fu)蝕(shi)(shi)性(xing)(xing)的(de)風險越來(lai)越突出，低(di)煙(yan)無鹵(lu)(lu)(lu)特(te)(te)性(xing)(xing)電纜(lan)的(de)使(shi)用范圍擴(kuo)展到越來(lai)越多的(de)場(chang)所(suo)(suo)，比如對關鍵設備和系(xi)統連續運行要求較高的(de)數據中(zhong)(zhong)(zhong)心(xin)、緊急呼叫中(zhong)(zhong)(zhong)心(xin)和電信交換站；以及學校、醫院和養老院等無法(fa)有(you)(you)效迅速(su)撤離人(ren)員的(de)特(te)(te)殊(shu)場(chang)所(suo)(suo)。雖然含有(you)(you)鹵(lu)(lu)(lu)化成分的(de)電纜(lan)絕緣(yuan)和護套具有(you)(you)的(de)阻燃(ran)性(xing)(xing)，但在(zai)遇(yu)火后(hou)會(hui)(hui)釋放(fang)(fang)具有(you)(you)毒(du)性(xing)(xing)和腐(fu)蝕(shi)(shi)性(xing)(xing)的(de)煙(yan)氣。遇(yu)火后(hou)釋放(fang)(fang)的(de)鹵(lu)(lu)(lu)素(su)和普遍存在(zai)的(de)氫(qing)氣反應，形成鹵(lu)(lu)(lu)化氫(qing)，遇(yu)水后(hou)形成鹽酸、或。這些酸可(ke)能會(hui)(hui)腐(fu)蝕(shi)(shi)重要結構、部件和設備，并(bing)增(zeng)加(jia)毒(du)性(xing)(xing)。含鹵(lu)(lu)(lu)的(de)電纜(lan)在(zai)燃(ran)燒(shao)時還(huan)會(hui)(hui)顯著(zhu)提(ti)高一氧化碳(tan)含量，其潛(qian)在(zai)危險更高。

實踐證明，在這些商業和(he)(he)(he)(he)住宅建筑(zhu)中(zhong)使用(yong)(yong)低(di)煙無(wu)鹵電(dian)(dian)纜(lan)有助于減少(shao)設備損(sun)壞，降低(di)毒性(xing)煙氣的(de)(de)釋放，同時成為涉及環境和(he)(he)(he)(he)可(ke)(ke)持(chi)續因素的(de)(de)綠(lv)色環保新建項(xiang)目(mu)的(de)(de)合(he)(he)理選(xuan)擇(ze)。在美國(guo)使用(yong)(yong)低(di)煙無(wu)鹵電(dian)(dian)纜(lan)可(ke)(ke)能(neng)會滿(man)足美國(guo)綠(lv)色建筑(zhu)委員(yuan)會LEED（Leadership in Energy and Environmental Design）綠(lv)色建筑(zhu)倡(chang)議的(de)(de)項(xiang)目(mu)信貸條件(jian)。目(mu)前(qian)電(dian)(dian)纜(lan)產品除使用(yong)(yong)金屬導體外，重要組(zu)成是聚(ju)(ju)合(he)(he)物材料。幾十年來(lai)(lai)，電(dian)(dian)纜(lan)的(de)(de)絕緣和(he)(he)(he)(he)護(hu)套(tao)材料中(zhong)通常(chang)會添加溴化(hua)(hua)物等鹵化(hua)(hua)成分來(lai)(lai)改善阻燃特性(xing)。絕緣和(he)(he)(he)(he)護(hu)套(tao)所使用(yong)(yong)的(de)(de)聚(ju)(ju)氯(lv)(lv)乙烯（PVC），氟化(hua)(hua)乙烯丙(bing)烯和(he)(he)(he)(he)氯(lv)(lv)化(hua)(hua)聚(ju)(ju)乙烯都含(han)有鹵素。其他(ta)用(yong)(yong)于電(dian)(dian)纜(lan)中(zhong)的(de)(de)化(hua)(hua)合(he)(he)物也有可(ke)(ke)能(neng)含(han)有其他(ta)鹵化(hua)(hua)成分的(de)(de)樹脂(zhi)、添加劑(ji)和(he)(he)(he)(he)色母。

UL無鹵電線-梁平UL無鹵電線-彭水苗族土家族UL無鹵電線。

無鹵電子線由電(dian)(dian)(dian)(dian)(dian)(dian)子線(xian)(xian)(xian)延(yan)伸(shen)而來，符合歐盟ROHS標準(zhun)下的環(huan)保要求，通常用(yong)于弱電(dian)(dian)(dian)(dian)(dian)(dian)工程，如電(dian)(dian)(dian)(dian)(dian)(dian)子電(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)設備的內部(bu)布(bu)線(xian)(xian)(xian)等，電(dian)(dian)(dian)(dian)(dian)(dian)子線(xian)(xian)(xian)可用(yong)于電(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)設備布(bu)線(xian)(xian)(xian)、發(fa)光(guang)二極管模塊線(xian)(xian)(xian)、家用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)線(xian)(xian)(xian)、汽車連接(jie)(jie)線(xian)(xian)(xian)、端子連接(jie)(jie)線(xian)(xian)(xian)、機械內部(bu)連接(jie)(jie)線(xian)(xian)(xian)、照(zhao)明(ming)燈(deng)具線(xian)(xian)(xian)、電(dian)(dian)(dian)(dian)(dian)(dian)子線(xian)(xian)(xian)路(lu)、變壓(ya)(ya)器(qi)線(xian)(xian)(xian)、電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)板連接(jie)(jie)線(xian)(xian)(xian)、發(fa)光(guang)二極管燈(deng)條(tiao)線(xian)(xian)(xian)等。機械損傷：無(wu)(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)(dian)(dian)子線(xian)(xian)(xian)被(bei)重物(wu)損壞(huai)，被(bei)挖(wa)掘機意外損壞(huai)，敷設時無(wu)(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)(dian)(dian)子線(xian)(xian)(xian)路(lu)過度彎曲，絕(jue)(jue)緣受損，運輸(shu)時無(wu)(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)(dian)(dian)子線(xian)(xian)(xian)路(lu)嚴(yan)重擠壓(ya)(ya)，絕(jue)(jue)緣層(ceng)(ceng)和保護層(ceng)(ceng)受損，底層(ceng)(ceng)下沉(chen)，直埋(mai)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)拉得太大等，絕(jue)(jue)緣因均而損壞(huai)，甚至無(wu)(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)(dian)(dian)子線(xian)(xian)(xian)路(lu)也可能(neng)斷裂，為了避免電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)的機械損壞(huai)，可以使用(yong)架空無(wu)(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)(dian)(dian)子線(xian)(xian)(xian)路(lu)，無(wu)(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)(dian)(dian)子線(xian)(xian)(xian)路(lu)沿墻敷設時，應(ying)隱 蔽(bi)，地埋(mai)應(ying)留有(you)明(ming)顯標志，禁止在無(wu)(wu)(wu)鹵(lu)電(dian)(dian)(dian)(dian)(dian)(dian)子線(xian)(xian)(xian)路(lu)周圍(wei)取土。

絕(jue)(jue)緣(yuan)受潮(chao)：由于(yu)無鹵電(dian)(dian)子線(xian)路(lu)施(shi)工工藝差，濕氣(qi)侵(qin)入(ru)電(dian)(dian)子線(xian)路(lu)內(nei)部(bu)(bu)，或(huo)無鹵電(dian)(dian)子線(xian)路(lu)內(nei)保(bao)護(hu)層(ceng)損(sun)壞，濕氣(qi)進入(ru)無鹵電(dian)(dian)子線(xian)路(lu)；鉛包電(dian)(dian)纜(lan)敷設(she)在(zai)震源周圍，因(yin)(yin)長期振動而疲勞開裂，無鹵電(dian)(dian)子線(xian)路(lu)的(de)外(wai)(wai)皮被腐(fu)蝕(shi)并(bing)漂浮(fu)，由于(yu)制造(zao)質量(liang)不好，鉛包上有小孔(kong)或(huo)裂紋；鑒于(yu)這(zhe)些現象，應(ying)加強無鹵電(dian)(dian)子線(xian)路(lu)外(wai)(wai)層(ceng)的(de)維(wei)護(hu)，并(bing)按期在(zai)外(wai)(wai)保(bao)護(hu)層(ceng)上涂一層(ceng)瀝青。過電(dian)(dian)壓：無鹵電(dian)(dian)子線(xian)路(lu)絕(jue)(jue)緣(yuan)層(ceng)因(yin)(yin)大氣(qi)過電(dian)(dian)壓或(huo)內(nei)部(bu)(bu)過電(dian)(dian)壓而擊(ji)穿，特(te)別是系(xi)統內(nei)部(bu)(bu)過電(dian)(dian)壓會導(dao)致多根電(dian)(dian)纜(lan)同時擊(ji)穿，在(zai)這(zhe)方面，應(ying)安裝(zhuang)避雷(lei)器。

絕(jue)(jue)緣(yuan)老化：在(zai)無鹵(lu)電(dian)子線(xian)路的長期運行過程中，由(you)于散熱不良或過載，絕(jue)(jue)緣(yuan)材料的電(dian)氣(qi)和機械功能變差，絕(jue)(jue)緣(yuan)層變脆或斷裂，如(ru)果是這種情況，應(ying)定期對(dui)無鹵(lu)素(su)電(dian)子線(xian)路進行預(yu)防性耐壓測(ce)試(shi)，在(zai)無鹵(lu)電(dian)子線(xian)路絕(jue)(jue)緣(yuan)降低不符合(he)安全運行條件，應(ying)更換新(xin)電(dian)纜(lan)。

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