熱力(li)管專(zhuan)用堵頭PERT

PERT 耐熱聚乙烯(xi)，為管道用料(liao)，做出(chu)的管材分(fen)為I型(xing)和(he)II型(xing)。

　　PERT I管(guan)(guan)(guan)(guan)和(he)PERT II型管(guan)(guan)(guan)(guan)的(de)區別在耐高(gao)(gao)溫溫級(ji)別不一(yi)樣，PERT I管(guan)(guan)(guan)(guan)屬(shu)低(di)溫管(guan)(guan)(guan)(guan)道(dao)使(shi)用溫度(du)在70°c以下，pert II型管(guan)(guan)(guan)(guan)用于高(gao)(gao)溫熱水管(guan)(guan)(guan)(guan)道(dao)使(shi)用溫度(du)70-95°c ;在低(di)溫管(guan)(guan)(guan)(guan)道(dao)系統中(zhong)pert管(guan)(guan)(guan)(guan)口徑(jing)大多為dn20-110mmm ，高(gao)(gao)溫熱水管(guan)(guan)(guan)(guan)道(dao)系統中(zhong)pert II型供(gong)熱管(guan)(guan)(guan)(guan)道(dao) 口徑(jing)為dn16-500mmPERT管(guan)(guan)(guan)(guan)專用堵頭(tou)和(he)pert II管(guan)(guan)(guan)(guan)標準色(se)應為原材料本(ben)(ben)色(se)，看上去“透(tou)(tou)透(tou)(tou)的(de)"即透(tou)(tou)明色(se)，也就是不加任何(he)填(tian)充料和(he)色(se)母的(de)原材料本(ben)(ben)色(se)!

　　在物理(li)性能(neng)上表現為 管(guan)(guan)(guan)材塑(su)料管(guan)(guan)(guan)帽(mao)硬(ying)度(du)大 就像(xiang)市(shi)場上pe100級小口徑20管(guan)(guan)(guan)和pe80級20管(guan)(guan)(guan)一樣，拿2者做實驗的話在彎(wan)曲(qu)度(du)上pert II型管(guan)(guan)(guan)能(neng)很(hen)直觀(guan)的體(ti)現比pert管(guan)(guan)(guan)硬(ying)度(du)、強(qiang)度(du)大的多，PERT II型管(guan)(guan)(guan)和ppr熱水管(guan)(guan)(guan)在同等溫度(du)條件下 硬(ying)度(du)相(xiang)當，從安裝及審美觀(guan)的角(jiao)度(du)來(lai)說pert II型管(guan)(guan)(guan)用(yong)于熱水管(guan)(guan)(guan)道系統(tong)(tong)橫平豎直和ppr熱水管(guan)(guan)(guan)一樣，反之如吊裝的pert管(guan)(guan)(guan)道系統(tong)(tong)當溫度(du)達70°時蠕(ru)變性非常大，外觀(guan)顯得彎(wan)彎(wan)曲(qu)曲(qu)很(hen)不美觀(guan)甚至(zhi)懷疑(yi)它(ta)耐(nai)熱性，而pert II管(guan)(guan)(guan)很(hen)好的解決(jue)了這個(ge)問題;

　　在(zai)化學性(xing)(xing)能(neng)上pert II管(guan)(guan)(guan)(guan)專用(yong)堵頭(tou)比pert管(guan)(guan)(guan)(guan)*的(de)多，在(zai)長期(qi)70°c靜液壓狀態(tai)下(xia)，pe-rt II管(guan)(guan)(guan)(guan)熱(re)穩定性(xing)(xing)表(biao)現(xian)的(de)非常穩定，pert管(guan)(guan)(guan)(guan)則出現(xian)拐點(dian)(dian)熱(re)穩定性(xing)(xing)能(neng)呈現(xian)“拋物線(xian)"狀態(tai)急(ji)聚下(xia)降(jiang)，說明pert管(guan)(guan)(guan)(guan)的(de)適(shi)用(yong)溫(wen)(wen)(wen)(wen)度(du)(du)范圍在(zai)70°c以下(xia)的(de)低溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)道(dao)系(xi)(xi)統(tong)(tong)，pert II管(guan)(guan)(guan)(guan)適(shi)用(yong)于70°-95°c高溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)道(dao)系(xi)(xi)統(tong)(tong). 從(cong)pe-rt管(guan)(guan)(guan)(guan)拐點(dian)(dian)圖(tu)片看(kan)，當溫(wen)(wen)(wen)(wen)度(du)(du)達70°時PERT管(guan)(guan)(guan)(guan)出現(xian)熱(re)穩定拐點(dian)(dian)溫(wen)(wen)(wen)(wen)度(du)(du)急(ji)劇下(xia)降(jiang)，也就(jiu)說pert管(guan)(guan)(guan)(guan)在(zai)70°c溫(wen)(wen)(wen)(wen)度(du)(du)條件下(xia)使(shi)用(yong)壽命短暫，不安全因素逐(zhu)步提高 會(hui)造成(cheng)沒必要意外(wai)損失，pert管(guan)(guan)(guan)(guan)塑(su)料管(guan)(guan)(guan)(guan)帽局限(xian)在(zai)70°c以下(xia)的(de)低溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)道(dao)系(xi)(xi)統(tong)(tong)使(shi)用(yong). 另一個(ge)從(cong)PERT II管(guan)(guan)(guan)(guan)材曲線(xian)圖(tu)來看(kan)，pert II管(guan)(guan)(guan)(guan)耐溫(wen)(wen)(wen)(wen)耐壓適(shi)用(yong)于高溫(wen)(wen)(wen)(wen)熱(re)水(shui)管(guan)(guan)(guan)(guan)道(dao)系(xi)(xi)統(tong)(tong)，正(zheng)常使(shi)用(yong)溫(wen)(wen)(wen)(wen)度(du)(du)在(zai)20-95°c，國(guo)(guo)外(wai)pert II管(guan)(guan)(guan)(guan)道(dao)已廣(guang)泛使(shi)用(yong)，國(guo)(guo)內市場也在(zai)普遍推(tui)廣(guang)，在(zai)熱(re)水(shui)管(guan)(guan)(guan)(guan)道(dao)系(xi)(xi)統(tong)(tong)、空調進回水(shui)保溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)道(dao)系(xi)(xi)統(tong)(tong)、熱(re)力管(guan)(guan)(guan)(guan)網(wang)系(xi)(xi)統(tong)(tong)等領(ling)域(yu)應(ying)用(yong)，隨著國(guo)(guo)家戰略“十(shi)三五(wu)"規劃"新(xin)能(neng)源 新(xin)材料“的(de)深(shen)入推(tui)進，作為(wei)新(xin)型材料的(de)pe-rt II型熱(re)力供熱(re)管(guan)(guan)(guan)(guan)道(dao)在(zai)高寒地區(qu)的(de)"華北(bei)“"東(dong)北(bei)“"西北(bei)“會(hui)廣(guang)泛使(shi)用(yong)，自此建(jian)設部(bu)(bu)和(he)城鄉住建(jian)部(bu)(bu)2015年11月已頒布(bu)CJ/T480-2015《pe-rt II預制直埋保溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)》標準.