預制環保耐高溫聚氨酯泡沫保溫管材料是(shi)地(di)下(xia)直埋中的一種管(guan)(guan)道，采用(yong)沒(mei)有混凝土結(jie)構的情況(kuang)下(xia)也(ye)可以進行地(di)下(xia)直埋的方(fang)式，即工作鋼(gang)管(guan)(guan)的熱膨(peng)脹(zhang)在外管(guan)(guan)內進行，從(cong)而降低了(le)材(cai)(cai)料成本，縮短了(le)施(shi)工日期，并保障(zhang)了(le)供熱管(guan)(guan)道的安全(quan)性，可以在不同溫度(du)(du)環(huan)境(jing)下(xia)更安全(quan)的廣泛應用(yong)，尤(you)其適用(yong)于高溫蒸汽管(guan)(guan)道項目。 使(shi)用(yong)溫度(du)(du)可達(da)150℃-450℃?內鋼(gang)管(guan)(guan)選用(yong)二度(du)(du)無(wu)機富鋅(xin)底漆（耐溫≥400℃）防(fang)腐涂層(ceng)，管(guan)(guan)道端(duan)口(kou)選用(yong)聚(ju)乙烯薄膜或三(san)層(ceng)PE冷(leng)纏帶密封，防(fang)止(zhi)安裝前進入潮氣(qi)或施(shi)工中進入水(shui)。保溫材(cai)(cai)料多層(ceng)錯縫(feng)包扎，有效減少了(le)熱損(sun)失(shi)，同時控制(zhi)外套表面措施(shi)，防(fang)止(zhi)了(le)冷(leng)橋(qiao)的產生，從(cong)而使(shi)外套防(fang)腐層(ceng)的溫度(du)(du)控制(zhi)得到了(le)保證。

直埋(mai)式(shi)預(yu)制保(bao)(bao)(bao)(bao)溫(wen)管(guan)(guan)(guan)(guan)(guan)(guan)（管(guan)(guan)(guan)(guan)(guan)(guan)中(zhong)管(guan)(guan)(guan)(guan)(guan)(guan)）直埋(mai)式(shi)保(bao)(bao)(bao)(bao)溫(wen)管(guan)(guan)(guan)(guan)(guan)(guan)由運(yun)(yun)送(song)介質(zhi)的(de)(de)(de)(de)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)，高密(mi)(mi)(mi)度(du)(du)(du)外(wai)(wai)(wai)套(tao)管(guan)(guan)(guan)(guan)(guan)(guan)，以及(ji)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)和(he)(he)外(wai)(wai)(wai)套(tao)管(guan)(guan)(guan)(guan)(guan)(guan)之間(jian)的(de)(de)(de)(de)填充的(de)(de)(de)(de)聚(ju)氨(an)(an)酯(zhi)(zhi)硬(ying)(ying)(ying)(ying)泡保(bao)(bao)(bao)(bao)溫(wen)嚴密(mi)(mi)(mi)結合(he)(he)而成(cheng)。聚(ju)氨(an)(an)酯(zhi)(zhi)保(bao)(bao)(bao)(bao)溫(wen)管(guan)(guan)(guan)(guan)(guan)(guan)鋼(gang)(gang)套(tao)鋼(gang)(gang)直埋(mai)保(bao)(bao)(bao)(bao)溫(wen)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)耐高溫(wen)功(gong)用(yong)(yong)其它外(wai)(wai)(wai)保(bao)(bao)(bao)(bao)護管(guan)(guan)(guan)(guan)(guan)(guan)都不能與之想比美。當(dang)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)因(yin)運(yun)(yun)送(song)介質(zhi)而溫(wen)度(du)(du)(du)添加發(fa)作熱脹大時，絕(jue)熱層隨之一(yi)同脹大移動。全(quan)體(ti)(ti)式(shi)保(bao)(bao)(bao)(bao)溫(wen)管(guan)(guan)(guan)(guan)(guan)(guan)首要用(yong)(yong)于熱媒溫(wen)度(du)(du)(du)在150℃以下的(de)(de)(de)(de)場(chang)合(he)(he)。聚(ju)氨(an)(an)酯(zhi)(zhi)保(bao)(bao)(bao)(bao)溫(wen)管(guan)(guan)(guan)(guan)(guan)(guan)簡(jian)介：聚(ju)氨(an)(an)酯(zhi)(zhi)保(bao)(bao)(bao)(bao)溫(wen)管(guan)(guan)(guan)(guan)(guan)(guan)又稱"管(guan)(guan)(guan)(guan)(guan)(guan)中(zhong)管(guan)(guan)(guan)(guan)(guan)(guan)"其有"兩步法"構成(cheng)，是由高密(mi)(mi)(mi)度(du)(du)(du)聚(ju)乙烯外(wai)(wai)(wai)維(wei)護層、聚(ju)氨(an)(an)酯(zhi)(zhi)硬(ying)(ying)(ying)(ying)質(zhi)泡沫塑保(bao)(bao)(bao)(bao)溫(wen)資料(liao)(liao)和(he)(he)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)構成(cheng)。保(bao)(bao)(bao)(bao)溫(wen)層資料(liao)(liao)為密(mi)(mi)(mi)度(du)(du)(du)60kg/m3至(zhi)80kg/m3的(de)(de)(de)(de)硬(ying)(ying)(ying)(ying)質(zhi)聚(ju)氨(an)(an)酯(zhi)(zhi)泡沫，充沛(pei)添滿(man)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)與套(tao)管(guan)(guan)(guan)(guan)(guan)(guan)之間(jian)的(de)(de)(de)(de)空(kong)(kong)地(di)(di)，并具(ju)有一(yi)定的(de)(de)(de)(de)粘接強度(du)(du)(du)，使鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)、外(wai)(wai)(wai)套(tao)管(guan)(guan)(guan)(guan)(guan)(guan)及(ji)保(bao)(bao)(bao)(bao)溫(wen)層三(san)者之間(jian)構成(cheng)一(yi)個強健的(de)(de)(de)(de)全(quan)體(ti)(ti)。聚(ju)氨(an)(an)酯(zhi)(zhi)保(bao)(bao)(bao)(bao)溫(wen)管(guan)(guan)(guan)(guan)(guan)(guan)因(yin)為聚(ju)氨(an)(an)酯(zhi)(zhi)硬(ying)(ying)(ying)(ying)質(zhi)泡沫保(bao)(bao)(bao)(bao)溫(wen)層緊密(mi)(mi)(mi)地(di)(di)粘結在鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)外(wai)(wai)(wai)皮，隔絕(jue)了空(kong)(kong)氣和(he)(he)水(shui)的(de)(de)(de)(de)進入，能起到超卓的(de)(de)(de)(de)防(fang)腐(fu)效果。而且它的(de)(de)(de)(de)發(fa)泡孔(kong)都是閉合(he)(he)的(de)(de)(de)(de)，吸水(shui)性很小。高密(mi)(mi)(mi)度(du)(du)(du)聚(ju)乙烯外(wai)(wai)(wai)殼（或(huo)玻璃鋼(gang)(gang)外(wai)(wai)(wai)殼）具(ju)有超卓的(de)(de)(de)(de)防(fang)腐(fu)、絕(jue)緣和(he)(he)機械功(gong)用(yong)(yong)。因(yin)而，工作鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)外(wai)(wai)(wai)皮很難遭到外(wai)(wai)(wai)界空(kong)(kong)氣和(he)(he)水(shui)的(de)(de)(de)(de)腐(fu)蝕(shi)。只需管(guan)(guan)(guan)(guan)(guan)(guan)道內(nei)部水(shui)質(zhi)處理好，據國外(wai)(wai)(wai)資料(liao)(liao)介紹，預(yu)制聚(ju)氨(an)(an)酯(zhi)(zhi)塑套(tao)鋼(gang)(gang)保(bao)(bao)(bao)(bao)溫(wen)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)運(yun)(yun)用(yong)(yong)壽數可達50年以上，比傳(chuan)統的(de)(de)(de)(de)地(di)(di)溝敷(fu)設、架空(kong)(kong)敷(fu)設運(yun)(yun)用(yong)(yong)壽數高3~4倍(bei)。

預制環保耐高溫聚氨酯泡沫保溫管材料