1鍍鋅方管是(shi)(shi)近年來外逐漸在石油化(hua)工、供排水(shui)等領域推廣使(shi)用的一種新型柔性非金屬復合材料壓力管(guan)道,其實質是(shi)(shi)以玻(bo)(bo)璃纖維為增強材料,以不飽和熱固性聚酯(zhi)樹(shu)脂(zhi)為基體(ti),中間夾石英(ying)砂(sha)(sha)的壓力管(guan)(英(ying)文縮寫名FRP,代號FWRPMP,簡稱(cheng)夾砂(sha)(sha)管(guan))。FRP管(guan)道目前(qian)執行建材行業標準《玻(bo)(bo)璃纖維纏繞(rao)增強熱固性樹(shu)脂(zhi)夾砂(sha)(sha)壓力管(guan)》。
2 鍍(du)(du)鋅(xin)方管(guan)(guan)的(de)(de)性能和(he)優點 ①比強度(du)(du)高。玻(bo)璃(li)(li)(li)纖(xian)(xian)維(wei)按(an)一(yi)(yi)定(ding)的(de)(de)規律通(tong)過張(zhang)拉(la)纏繞(rao)形成一(yi)(yi)種多(duo)層網狀分布,大(da)大(da)地提高了管(guan)(guan)道環(huan)軸(zhou)向強度(du)(du)指標(biao)。②剛度(du)(du)大(da)。管(guan)(guan)壁內、外層之間夾有0.3~0.8mm粒徑的(de)(de)石英砂(sha),經浸(jin)透樹(shu)脂固(gu)化后(hou)提高了玻(bo)璃(li)(li)(li)鋼(gang)管(guan)(guan)的(de)(de)剛度(du)(du)。③抗滲(shen)防(fang)腐(fu)性能好。高分子化合物不(bu)飽和(he)聚酯樹(shu)脂填充于(yu)玻(bo)璃(li)(li)(li)纖(xian)(xian)維(wei)網絡空間并與(yu)玻(bo)璃(li)(li)(li)纖(xian)(xian)維(wei)良好的(de)(de)浸(jin)潤,固(gu)化后(hou)不(bu)但起(qi)到傳遞荷載和(he)防(fang)滲(shen)漏的(de)(de)作(zuo)用(yong)(yong),而且起(qi)到防(fang)止酸、堿、鹽侵蝕的(de)(de)同(tong)時(shi),也保護(hu)輸(shu)送的(de)(de)介質無二次污染。④耐久性好。鍍(du)(du)鋅(xin)方管(guan)(guan)的(de)(de)使用(yong)(yong)壽(shou)(shou)命與(yu)使用(yong)(yong)環(huan)境(jing)溫度(du)(du)以(yi)及(ji)掃(sao)用(yong)(yong)材(cai)料(liao)及(ji)管(guan)(guan)壁結構形式有關,按(an)現行標(biao)準JC/T838-1998的(de)(de)規定(ding),通(tong)常壽(shou)(shou)命為50年(nian)。⑤重(zhong)量輕。夾砂(sha)玻(bo)璃(li)(li)(li)鋼(gang)的(de)(de)比重(zhong)為15~20g/cm3,約(yue)是鋼(gang)材(cai)的(de)(de)1/4.該工(gong)程使用(yong)(yong)內徑800mm,管(guan)(guan)壁厚(hou)12~14 mm,單管(guan)(guan)長12m,重(zhong)約(yue)0.8T的(de)(de)鍍(du)(du)鋅(xin)方管(guan)(guan),非常適應山區非機械施工(gong)。⑥流通(tong)能力強。鍍(du)(du)鋅(xin)方管(guan)(guan)內壁表面糙率系數在(zai)0.008~0.009之間,管(guan)(guan)內不(bu)易被微生物玷污蛀(zhu)附及(ji)結垢,壓力損失小(xiao),管(guan)(guan)道具有較高的(de)(de)流通(tong)能力。