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電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)橋(qiao)(qiao)架附(fu)件(jian)(jian)批發(fa)(fa)?? 電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)橋(qiao)(qiao)架附(fu)件(jian)(jian)：? 1. 強度高，可設(she)計(ji)(ji)性好 ??? 連(lian)續纖(xian)維(wei)增(zeng)強熱(re)(re)固(gu)(gu)性復(fu)合(he)材(cai)料主要由起(qi)增(zeng)強作(zuo)用(yong)的(de)(de)玻(bo)璃纖(xian)維(wei)和起(qi)粘(zhan)結作(zuo)用(yong)，傳遞(di)載荷作(zuo)用(yong)的(de)(de)熱(re)(re)固(gu)(gu)性樹脂(zhi)組成。玻(bo)璃纖(xian)維(wei)的(de)(de)拉伸強度很高(3450mpa)，其含(han)量(liang)(liang)(liang)，長度，鋪設(she)形(xing)式決定(ding)支(zhi)架制(zhi)品(pin)(pin)的(de)(de)強度。 熱(re)(re)固(gu)(gu)性的(de)(de)玻(bo)璃纖(xian)維(wei)增(zeng)強復(fu)合(he)材(cai)料強度可以在(zai)(zai)30-1000mpa范圍。因(yin)此，我(wo)們(men)(men)根據產(chan)(chan)(chan)(chan)(chan)品(pin)(pin)的(de)(de)受力(li)情況，產(chan)(chan)(chan)(chan)(chan)量(liang)(liang)(liang)，生產(chan)(chan)(chan)(chan)(chan)工藝(yi)，價(jia)格承受能力(li)來設(she)計(ji)(ji)玻(bo)璃纖(xian)維(wei)的(de)(de)用(yong)量(liang)(liang)(liang)，長度和鋪設(she)形(xing)式。 ??? 2.不(bu)蠕變 ??? 連(lian)續纖(xian)維(wei)增(zeng)強熱(re)(re)固(gu)(gu)性復(fu)合(he)材(cai)料支(zhi)架的(de)(de)剛性比美國(guo)某公司(si)生產(chan)(chan)(chan)(chan)(chan)的(de)(de)纖(xian)維(wei)增(zeng)強增(zeng)強尼龍支(zhi)架增(zeng)加(jia)一倍。即使在(zai)(zai)長期負(fu)載下(xia)(xia)也不(bu)變形(xing)，也不(bu)會出現(xian)像國(guo)內某些(xie)城市(shi)地鐵(tie)使用(yong)的(de)(de)金屬制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)支(zhi)架那樣往下(xia)(xia)傾斜。 ??? 3.防(fang)火(huo) ??? 氧(yang)(yang)(yang)指(zhi)數(shu)(shu)是(shi)評價(jia)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)放火(huo)產(chan)(chan)(chan)(chan)(chan)品(pin)(pin)重要的(de)(de)檢(jian)測手段。 氧(yang)(yang)(yang)指(zhi)數(shu)(shu)是(shi)指(zhi)在(zai)(zai)氧(yang)(yang)(yang)氣條件(jian)(jian)下(xia)(xia),防(fang)火(huo)產(chan)(chan)(chan)(chan)(chan)品(pin)(pin)耐燒(shao)(shao)的(de)(de)特(te)性。在(zai)(zai)工程(cheng)中使用(yong)應根據燃燒(shao)(shao)強度確定(ding)。例如,在(zai)(zai)30根電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)的(de)(de)條件(jian)(jian)下(xia)(xia)，如發(fa)(fa)生電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)引燃事故(gu)，在(zai)(zai)4min以內即可形(xing)成500度以上高溫熱(re)(re)聚集，從而導致電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)沿(yan)走向(xiang)進(jin)行延燃。電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)密集處(chu)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)越多，可燃體(ti)質量(liang)(liang)(liang)越大。在(zai)(zai)30根電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)時(shi)，單位長度可燃體(ti)質量(liang)(liang)(liang)為(wei)(wei)20.5kg/m，現(xian)在(zai)(zai)以300根電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)計(ji)(ji)算(suan)，單位長度可燃體(ti)質量(liang)(liang)(liang)為(wei)(wei)158kg/m，按可能產(chan)(chan)(chan)(chan)(chan)生燃燒(shao)(shao)強度計(ji)(ji)算(suan)，氧(yang)(yang)(yang)指(zhi)數(shu)(shu)要不(bu)小于65%。我(wo)們(men)(men)認為(wei)(wei)，產(chan)(chan)(chan)(chan)(chan)品(pin)(pin)防(fang)火(huo)標(biao)準中氧(yang)(yang)(yang)指(zhi)數(shu)(shu)定(ding)在(zai)(zai)70%比較(jiao)。"電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)橋(qiao)(qiao)架附(fu)件(jian)(jian)批發(fa)(fa)