聚(ju)(ju)氨(an)(an)(an)酯(zhi)(zhi)現(xian)場發泡(pao)施(shi)工(gong)簡(jian)(jian)便(bian)快(kuai)捷 聚(ju)(ju)氨(an)(an)(an)酯(zhi)(zhi)現(xian)場發泡(pao)施(shi)工(gong)簡(jian)(jian)便(bian)快(kuai)捷化學反應迅(xun)速(su)固化,高速(su)連續(xu)混合,直接(jie)噴涂施(shi)工(gong)。泡(pao)沫細微,強(qiang)(qiang)勁的(de)(de)粘(zhan)接(jie),閉孔(kong)率達90%以上,優(you)異的(de)(de)防水功能,杜絕濕氣侵蝕(shi),連續(xu)施(shi)工(gong)無任何拼(pin)接(jie)裂紋,連貫一體性。安全、不滲水,優(you)異的(de)(de)保溫(wen)吸熱抗(kang)紫外線侵害,具有強(qiang)(qiang)力的(de)(de)玻(bo)璃棉抗(kang)壓(ya)強(qiang)(qiang)度(du),可邊施(shi)工(gong)邊行(xing)人,聚(ju)(ju)氨(an)(an)(an)酯(zhi)(zhi)硬(ying)質(zhi)(zhi)泡(pao)沫是一種理(li)想的(de)(de)有機(ji)質(zhi)(zhi)低溫(wen)隔熱材(cai)料,硬(ying)質(zhi)(zhi)聚(ju)(ju)氨(an)(an)(an)酯(zhi)(zhi)泡(pao)沫塑(su)料(簡(jian)(jian)稱PU硬(ying)泡(pao))應用現(xian)場噴涂發泡(pao)成(cheng)型,PU硬(ying)泡(pao)具有容重輕強(qiang)(qiang)度(du)高,導熱系(xi)數低,耐腐蝕(shi)抗(kang)老化及(ji)優(you)良的(de)(de)水蒸汽滲透阻(zu)和...
噴涂(tu)發泡(pao)保(bao)(bao)溫(wen)(wen)應用(yong)技術(shu) 噴涂(tu)發泡(pao)保(bao)(bao)溫(wen)(wen)應用(yong)技術(shu)應用(yong)技術(shu)聚氨酯保(bao)(bao)溫(wen)(wen)管施(shi)工(gong)中(zhong)溝槽(cao)要(yao)平整,保(bao)(bao)證槽(cao)底干燥,且需要(yao)作200mm左右厚的細砂(sha)(sha)墊層,保(bao)(bao)溫(wen)(wen)管兩側及上部(bu)(bu)至(zhi)少應覆蓋200mm左右厚的細沙。其目的一是防止硬物(wu)損(sun)壞(huai)保(bao)(bao)溫(wen)(wen)外套管,二是利用(yong)砂(sha)(sha)子的流動性(xing),充(chong)分填(tian)充(chong)管道周圍的空(kong)隙(xi),以保(bao)(bao)證足夠的摩擦力。聚氨酯保(bao)(bao)溫(wen)(wen)管一次性(xing)補償(chang)直埋管線必須要(yao)按設計(ji)要(yao)求(qiu)進行預熱,預熱至(zhi)設計(ji)溫(wen)(wen)度(du)時(shi)要(yao)保(bao)(bao)證溫(wen)(wen)度(du)的恒定,并保(bao)(bao)證到一次性(xing)補償(chang)器施(shi)焊完畢(bi)或回填(tian)土全部(bu)(bu)完成方可降溫(wen)(wen)。聚氨酯保(bao)(bao)溫(wen)(wen)管管道安裝(zhuang)完畢(bi)需進行1.5倍工(gong)作壓(ya)力的水壓(ya)試...
儲(chu)罐(guan)保(bao)溫(wen)材(cai)(cai)料(liao)(liao)(liao)出現的(de)常(chang)(chang)見(jian)問(wen)題 儲(chu)罐(guan)保(bao)溫(wen)材(cai)(cai)料(liao)(liao)(liao)出現的(de)常(chang)(chang)見(jian)問(wen)題:儲(chu)罐(guan)保(bao)溫(wen)材(cai)(cai)料(liao)(liao)(liao)結(jie)皮(pi) 常(chang)(chang)見(jian)于油(you)性和醇酸樹脂(zhi)儲(chu)罐(guan)保(bao)溫(wen)材(cai)(cai)料(liao)(liao)(liao)、酚(fen)醛樹脂(zhi)儲(chu)罐(guan)保(bao)溫(wen)材(cai)(cai)料(liao)(liao)(liao)通(tong)常(chang)(chang)是受(shou)到了(le)氧化反應、熱(re)氣影響或溶劑的(de)揮發(fa)而造成的(de)。如(ru)果包裝桶破(po)損,或者(zhe)密閉不好,就(jiu)(jiu)會發(fa)生(sheng)(sheng)結(jie)皮(pi);有的(de)時候是生(sheng)(sheng)產中(zhong)防結(jie)皮(pi)劑的(de)問(wen)題;挑去(qu)結(jie)皮(pi),小心攪(jiao)拌(ban),儲(chu)罐(guan)保(bao)溫(wen)材(cai)(cai)料(liao)(liao)(liao)多(duo)半還是能(neng)夠(gou)使用(yong)(yong)的(de)。儲(chu)罐(guan)保(bao)溫(wen)材(cai)(cai)料(liao)(liao)(liao)粘度太高 如(ru)果粘度太高,儲(chu)罐(guan)保(bao)溫(wen)材(cai)(cai)料(liao)(liao)(liao)看上去(qu)就(jiu)(jiu)很厚,有時會膠(jiao)凝(ning)肝化。如(ru)果儲(chu)罐(guan)保(bao)溫(wen)材(cai)(cai)料(liao)(liao)(liao)到了(le)膠(jiao)凝(ning)肝化的(de)階段,就(jiu)(jiu)不可再使用(yong)(yong)了(le)。粘度太高發(fa)生(sheng)(sheng)的(de)原因有: 溶劑或稀釋劑的(de)揮...
聚氨酯(zhi)冷庫保(bao)(bao)溫(wen)怎樣(yang)選(xuan)(xuan)材料(liao) 聚氨酯(zhi)冷庫保(bao)(bao)溫(wen)如何選(xuan)(xuan)材料(liao):使(shi)用結構性(xing)(xing)胺醚,降低導熱系數,提升保(bao)(bao)溫(wen)效(xiao)果(guo);各種原料(liao)以及配方中盡量將含(han)水(shui)量降低,避免水(shui)發泡(pao)造(zao)成保(bao)(bao)溫(wen)性(xing)(xing)能劣(lie)化;主體材料(liao)聚醚;選(xuan)(xuan)用經(jing)過嚴格后處(chu)(chu)理的(de)產品,與未(wei)經(jing)后處(chu)(chu)理的(de)聚醚相比,其泡(pao)沫泡(pao)孔的(de)均(jun)勻(yun)程度高、泡(pao)孔壁較薄,保(bao)(bao)溫(wen)性(xing)(xing)能明顯(xian)優于(yu)后壁大孔的(de)普通泡(pao)沫;無味(wei)胺類催化劑的(de)使(shi)用,有效(xiao)調整發泡(pao)-凝膠反應(ying)的(de)平衡(heng),使(shi)噴涂層間表皮較薄,利于(yu)冷庫保(bao)(bao)溫(wen)材料(liao)性(xing)(xing)能的(de)體現;不使(shi)用普通聚酯(zhi)多元醇。 聚氨酯(zhi)冷庫保(bao)(bao)溫(wen)材料(liao)的(de)保(bao)(bao)溫(wen)性(xing)(xing)能、尺寸穩定性(xing)(xing)、使(shi)用壽...
聚氨(an)酯(zhi)(zhi)屋(wu)面(mian)(mian)保溫(wen)主(zhu)要(yao)(yao)特(te)點 聚氨(an)酯(zhi)(zhi)屋(wu)面(mian)(mian)保溫(wen)主(zhu)要(yao)(yao)特(te)點:聚氨(an)酯(zhi)(zhi)硬泡(pao)(pao)體(ti)閉孔(kong)率(lv)≥95%,吸水率(lv)≤1%,節能(neng)、隔熱效果(guo)好,聚氨(an)酯(zhi)(zhi)硬泡(pao)(pao)體(ti)是高密度(du)閉孔(kong)的(de)泡(pao)(pao)沫化合物,導熱系數≤0.022W/mk,節能(neng)效果(guo)好。施(shi)工厚度(du)≥40mm就(jiu)可(ke)以達到 節能(neng)65%的(de)要(yao)(yao)求。聚氨(an)酯(zhi)(zhi)硬泡(pao)(pao)體(ti)的(de)抗(kang)壓強度(du)≥300Kpa,還可(ke)以根據(ju)實(shi)際情(qing)況加(jia)大抗(kang)壓強度(du)到600Kpa 以上,滿(man)足了(le)工程的(de)各種(zhong)不同(tong)要(yao)(yao)求。聚氨(an)酯(zhi)(zhi)硬泡(pao)(pao)體(ti)直接(jie)噴涂于屋(wu)面(mian)(mian)層,系反應物料(liao)受(shou)壓力(li)作用(yong),通 過噴槍(qiang)形成混合物直接(jie)發...
聚氨酯(zhi)外墻(qiang)保(bao)(bao)(bao)溫(wen)(wen)老化原(yuan)(yuan)因(yin) 聚氨酯(zhi)外墻(qiang)保(bao)(bao)(bao)溫(wen)(wen)老化原(yuan)(yuan)因(yin):熱(re)應力(li)(li)(li)(li);由溫(wen)(wen)差變(bian)(bian)化導致(zhi)的(de)熱(re)脹(zhang)冷縮,會引起非結構(gou)(gou)構(gou)(gou)造(zao)的(de)體積變(bian)(bian)化,從(cong)而使之始終處于一種不穩定(ding)狀(zhuang)態,因(yin)此(ci),熱(re)應力(li)(li)(li)(li)是高層建(jian)筑(zhu)外墻(qiang)外保(bao)(bao)(bao)溫(wen)(wen)層主要破壞力(li)(li)(li)(li)量之一。相對(dui) 于多層或平房建(jian)筑(zhu),高層建(jian)筑(zhu)由于外層接受(shou)陽(yang)光照射更(geng)強(qiang),熱(re)應力(li)(li)(li)(li)更(geng)大,變(bian)(bian)形也更(geng)大,因(yin)而在保(bao)(bao)(bao)溫(wen)(wen) 抗裂構(gou)(gou)造(zao)設計(ji)時,選用保(bao)(bao)(bao)溫(wen)(wen)材料應滿足柔性漸(jian)變(bian)(bian)的(de)原(yuan)(yuan)則,外層材料的(de)變(bian)(bian)形能力(li)(li)(li)(li)應高于內層材料的(de)變(bian)(bian) 形能力(li)(li)(li)(li)。風壓(ya);一般來說,正風壓(ya)產(chan)(chan)生推力(li)(li)(li)(li),負風壓(ya)產(chan)(chan)生吸力(li)(li)(li)(li),對(dui)高層建(jian)筑(zhu)外保(bao)(bao)(bao)溫(wen)(wen)層均會造(zao)成很大 的(de)破壞...