熱(re)力(li)管專用堵頭(tou)PERT

PERT 耐熱聚乙烯，為管道用料，做出(chu)的管材分(fen)為I型和II型。

　　PERT I管(guan)和PERT II型管(guan)的(de)區別在耐高溫(wen)溫(wen)級別不(bu)一樣，PERT I管(guan)屬(shu)低溫(wen)管(guan)道使用(yong)(yong)溫(wen)度在70°c以下(xia)，pert II型管(guan)用(yong)(yong)于高溫(wen)熱水管(guan)道使用(yong)(yong)溫(wen)度70-95°c ;在低溫(wen)管(guan)道系統中pert管(guan)口徑大多為dn20-110mmm ，高溫(wen)熱水管(guan)道系統中pert II型供熱管(guan)道 口徑為dn16-500mmPERT管(guan)專用(yong)(yong)堵頭和pert II管(guan)標準色(se)應(ying)為原材料本色(se)，看上(shang)去“透透的(de)"即透明色(se)，也就是不(bu)加任何填(tian)充料和色(se)母的(de)原材料本色(se)!

　　在物理性(xing)能上(shang)表現為 管(guan)(guan)(guan)材塑(su)料管(guan)(guan)(guan)帽硬(ying)度大(da) 就像市場上(shang)pe100級小口徑20管(guan)(guan)(guan)和pe80級20管(guan)(guan)(guan)一樣(yang)，拿2者(zhe)做實驗的(de)話(hua)在彎曲度上(shang)pert II型管(guan)(guan)(guan)能很(hen)直(zhi)觀(guan)的(de)體(ti)現比pert管(guan)(guan)(guan)硬(ying)度、強(qiang)度大(da)的(de)多(duo)，PERT II型管(guan)(guan)(guan)和ppr熱水(shui)管(guan)(guan)(guan)在同等溫度條件下 硬(ying)度相當(dang)，從安裝及審美觀(guan)的(de)角(jiao)度來說pert II型管(guan)(guan)(guan)用于熱水(shui)管(guan)(guan)(guan)道(dao)(dao)系(xi)統橫平豎直(zhi)和ppr熱水(shui)管(guan)(guan)(guan)一樣(yang)，反之如(ru)吊裝的(de)pert管(guan)(guan)(guan)道(dao)(dao)系(xi)統當(dang)溫度達70°時蠕變性(xing)非(fei)常大(da)，外觀(guan)顯(xian)得(de)彎彎曲曲很(hen)不(bu)美觀(guan)甚至懷疑它耐熱性(xing)，而pert II管(guan)(guan)(guan)很(hen)好的(de)解(jie)決(jue)了這個(ge)問題;

　　在(zai)(zai)(zai)化學性能(neng)(neng)上pert II管(guan)(guan)(guan)(guan)專用堵(du)頭比pert管(guan)(guan)(guan)(guan)優(you)越的(de)(de)多(duo)，在(zai)(zai)(zai)長期70°c靜液壓(ya)狀態下(xia)(xia)，pe-rt II管(guan)(guan)(guan)(guan)熱(re)(re)穩定(ding)(ding)性表現(xian)的(de)(de)非常(chang)穩定(ding)(ding)，pert管(guan)(guan)(guan)(guan)則出現(xian)拐點熱(re)(re)穩定(ding)(ding)性能(neng)(neng)呈現(xian)“拋物線(xian)"狀態急(ji)聚(ju)下(xia)(xia)降(jiang)，說(shuo)明(ming)pert管(guan)(guan)(guan)(guan)的(de)(de)適(shi)用溫(wen)(wen)(wen)(wen)度(du)范圍(wei)在(zai)(zai)(zai)70°c以(yi)下(xia)(xia)的(de)(de)低溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)道(dao)(dao)系(xi)統(tong)，pert II管(guan)(guan)(guan)(guan)適(shi)用于(yu)70°-95°c高溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)道(dao)(dao)系(xi)統(tong). 從(cong)pe-rt管(guan)(guan)(guan)(guan)拐點圖片看，當溫(wen)(wen)(wen)(wen)度(du)達70°時PERT管(guan)(guan)(guan)(guan)出現(xian)熱(re)(re)穩定(ding)(ding)拐點溫(wen)(wen)(wen)(wen)度(du)急(ji)劇(ju)下(xia)(xia)降(jiang)，也就說(shuo)pert管(guan)(guan)(guan)(guan)在(zai)(zai)(zai)70°c溫(wen)(wen)(wen)(wen)度(du)條件下(xia)(xia)使(shi)用壽命短暫，不安全因素逐步提高 會造(zao)成(cheng)沒(mei)必要意外(wai)損(sun)失，pert管(guan)(guan)(guan)(guan)塑料(liao)(liao)管(guan)(guan)(guan)(guan)帽局(ju)限在(zai)(zai)(zai)70°c以(yi)下(xia)(xia)的(de)(de)低溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)道(dao)(dao)系(xi)統(tong)使(shi)用. 另一個(ge)從(cong)PERT II管(guan)(guan)(guan)(guan)材曲線(xian)圖來看，pert II管(guan)(guan)(guan)(guan)耐(nai)溫(wen)(wen)(wen)(wen)耐(nai)壓(ya)適(shi)用于(yu)高溫(wen)(wen)(wen)(wen)熱(re)(re)水(shui)管(guan)(guan)(guan)(guan)道(dao)(dao)系(xi)統(tong)，正常(chang)使(shi)用溫(wen)(wen)(wen)(wen)度(du)在(zai)(zai)(zai)20-95°c，國外(wai)pert II管(guan)(guan)(guan)(guan)道(dao)(dao)已廣(guang)泛使(shi)用，國內(nei)市(shi)場也在(zai)(zai)(zai)普遍推廣(guang)，在(zai)(zai)(zai)熱(re)(re)水(shui)管(guan)(guan)(guan)(guan)道(dao)(dao)系(xi)統(tong)、空(kong)調進(jin)回水(shui)保(bao)溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)道(dao)(dao)系(xi)統(tong)、熱(re)(re)力(li)管(guan)(guan)(guan)(guan)網(wang)系(xi)統(tong)等(deng)領域應用，隨著國家戰(zhan)略“十三五"規(gui)劃"新能(neng)(neng)源 新材料(liao)(liao)“的(de)(de)深入推進(jin)，作(zuo)為新型(xing)材料(liao)(liao)的(de)(de)pe-rt II型(xing)熱(re)(re)力(li)供熱(re)(re)管(guan)(guan)(guan)(guan)道(dao)(dao)在(zai)(zai)(zai)高寒(han)地區的(de)(de)"華北(bei)“"東北(bei)“"西北(bei)“會廣(guang)泛使(shi)用，自(zi)此建設部(bu)和城(cheng)鄉住建部(bu)2015年11月已頒布CJ/T480-2015《pe-rt II預(yu)制直埋保(bao)溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)》標(biao)準.