熔(rong)(rong)結(jie)環(huan)氧粉(fen)末外涂層(ceng)(ceng)(FBE/2FBE)是(shi)近30年(nian)來發展起來的(de)(de)新型防(fang)腐層(ceng)(ceng),FBE涂層(ceng)(ceng)有單層(ceng)(ceng)和雙層(ceng)(ceng)兩種。所謂FBE涂層(ceng)(ceng)一般(ban)指單層(ceng)(ceng)熔(rong)(rong)結(jie)環(huan)氧涂層(ceng)(ceng)。單層(ceng)(ceng)FBE涂層(ceng)(ceng)采(cai)用(yong)專用(yong)的(de)(de)熔(rong)(rong)結(jie)環(huan)氧粉(fen)末涂料(liao)作(zuo)為(wei)成(cheng)膜材料(liao)。采(cai)用(yong)靜電噴(pen)涂工(gong)藝(yi)涂敷(fu)環(huan)氧粉(fen)末涂料(liao),一次成(cheng)膜。這種環(huan)氧粉(fen)末涂料(liao)是(shi)一種熱(re)固(gu)(gu)性(xing)(xing)涂料(liao),由(you)固(gu)(gu)態(tai)環(huan)氧樹(shu)脂、固(gu)(gu)化(hua)劑及多種助劑經混煉(lian)和粉(fen)碎加工(gong)而成(cheng)。鋼(gang)管(guan)在(zai)噴(pen)漆前先經過拋丸處理和中頻(pin)預(yu)熱(re),再(zai)采(cai)用(yong)靜電噴(pen)涂方法將(jiang)環(huan)氧粉(fen)末涂料(liao)噴(pen)涂在(zai)加熱(re)的(de)(de)鋼(gang)管(guan)表(biao)面上(shang),熔(rong)(rong)融粘結(jie)在(zai)鋼(gang)管(guan)表(biao)面,固(gu)(gu)化(hua)形成(cheng)涂層(ceng)(ceng)。FBE涂層(ceng)(ceng)一般(ban)一般(ban)為(wei)一次成(cheng)膜結(jie)構.。FBE涂層(ceng)(ceng)有對鋼(gang)鐵粘結(jie)力強(qiang)、膜完整性(xing)(xing)好(hao)、耐(nai)陰極剝(bo)離、耐(nai)土壤(rang)應力和耐(nai)磨損、涂敷(fu)操作(zuo)簡單、無污染、涂層(ceng)(ceng)抗(kang)沖擊和抗(kang)彎曲性(xing)(xing)能好(hao)、耐(nai)溫性(xing)(xing)高等(deng)優點,在(zai)國外得到了(le)廣泛(fan)的(de)(de)應用(yong)。FBE涂層(ceng)(ceng)可用(yong)于工(gong)作(zuo)溫度為(wei)-30~100攝氏度的(de)(de)鋼(gang)制(zhi)埋地管(guan)道或水(shui)下(xia)管(guan)道設施的(de)(de)外防(fang)腐
常用標準:SY/T0315-2005,QCNPC38-2002,QSY-XQ9-2003等標準。
主要采用以下工藝流(liu)程生(sheng)產: