磁力泵
在工(gong)(gong)(gong)業生(sheng)產(chan)中(zhong)，化工(gong)(gong)(gong)磁力泵作為無(wu)泄漏(lou)，環保理念，深受用(yong)(yong)(yong)戶廣泛使(shi)用(yong)(yong)(yong)，隨(sui)著需求的不(bu)同(tong)，高(gao)(gao)溫(wen)情(qing)況下也是常有(you)的，對(dui)于(yu)使(shi)用(yong)(yong)(yong)設備，必須具有(you)耐高(gao)(gao)溫(wen)性，那么在高(gao)(gao)溫(wen)情(qing)況下化工(gong)(gong)(gong)磁力泵密封(feng)材(cai)質(zhi)有(you)哪些選(xuan)型材(cai)料(liao)呢?為了合成(cheng)新材(cai)料(liao)和(he)提升(sheng)生(sheng)產(chan)效率，化工(gong)(gong)(gong)處(chu)理中(zhong)的工(gong)(gong)(gong)藝溫(wen)度在持(chi)續升(sheng)高(gao)(gao)，高(gao)(gao)溫(wen)工(gong)(gong)(gong)況增多。在高(gao)(gao)溫(wen)范圍內，適(shi)合的非金屬墊片(pian)材(cai)料(liao)選(xuan)擇性很小(xiao)。

1、目前都(dou)有哪些密(mi)封材料(liao)可耐(nai)受(shou)工業高(gao)溫(wen)呢? 石(shi)墨(mo)在這個溫(wen)度下無(wu)法(fa)使(shi)用或者無(wu)法(fa)長(chang)期使(shi)用;云母和陶瓷(ci)類產品泄漏率太大(da);近年來蛭石(shi)基(ji)(吸水性硅酸(suan)鋁(lv)基(ji)材質(zhi))高(gao)溫(wen)密(mi)封材料(liao)有所應用，但這種材料(liao)不足是具有吸水性，不利于耐(nai)高(gao)溫(wen)化(hua)工磁力泵使(shi)用。革命性疏水性硅酸(suan)鎂基(ji)材質(zhi)的超高(gao)溫(wen)密(mi)封材料(liao)應勢誕(dan)生，專(zhuan)有設計，使(shi)用環保的無(wu)溶劑工藝生產，配方*，適(shi)用于腐蝕性化(hua)學品場(chang)合。

2、常(chang)用高(gao)溫(wen)墊(dian)片性(xing)能對(dui)比(bi)，以下就常(chang)用高(gao)溫(wen)密(mi)(mi)封材(cai)料在熱(re)失(shi)(shi)重性(xing)，疏水(shui)性(xing)以及密(mi)(mi)封性(xing)幾個方面進行(xing)對(dui)比(bi)試驗。 密(mi)(mi)封材(cai)料暴露于高(gao)溫(wen)時，有機纖維和橡膠膠黏劑很容易被碳化或揮發，可以通過(guo)測試高(gao)溫(wen)下密(mi)(mi)封材(cai)料的(de)重量損(sun)失(shi)(shi)來判斷其(qi)影響大小(xiao)。不同高(gao)溫(wen)材(cai)料的(de)熱(re)失(shi)(shi)重分析(xi)結果。密(mi)(mi)封材(cai)料的(de)重量損(sun)失(shi)(shi)相應(ying)表明有體積(ji)損(sun)失(shi)(shi)，體積(ji)損(sun)失(shi)(shi)對(dui)保(bao)持密(mi)(mi)封性(xing)是非(fei)常(chang)致命的(de)。

對(dui)(dui)于(yu)墊(dian)片(pian)(pian)(pian)材料(liao)(liao)來說，抗(kang)氧(yang)(yang)化(hua)(hua)性(xing)(xing)能(neng)(neng)對(dui)(dui)于(yu)保持螺(luo)栓(shuan)的預緊力非常重要，一旦(dan)墊(dian)片(pian)(pian)(pian)氧(yang)(yang)化(hua)(hua)失重，就會(hui)造成(cheng)螺(luo)栓(shuan)松弛，從而導致密(mi)封泄漏。對(dui)(dui)于(yu)長(chang)期的氧(yang)(yang)化(hua)(hua)環(huan)境(jing)也(ye)(ye)不(bu)是(shi)(shi)問題(ti)。 從制造的角度來說，使用親(qin)水(shui)(shui)(shui)性(xing)(xing)材料(liao)(liao)如云母、氟化(hua)(hua)云母、蛭石、氮化(hua)(hua)硼等(deng)原材料(liao)(liao)時，其親(qin)水(shui)(shui)(shui)特性(xing)(xing)能(neng)(neng)在(zai)混(hun)合階(jie)段(duan)能(neng)(neng)很好(hao)幫助加(jia)工(gong)，也(ye)(ye)有(you)很好(hao)的耐溫(wen)性(xing)(xing)。然而，它(ta)們(men)在(zai)潮濕(shi)環(huan)境(jing)下(xia)會(hui)受水(shui)(shui)(shui)沾蝕(shi)性(xing)(xing)，易導致墊(dian)片(pian)(pian)(pian)材料(liao)(liao)的密(mi)封等(deng)級及完整(zheng)性(xing)(xing)的下(xia)降，這在(zai)工(gong)業工(gong)況下(xia)也(ye)(ye)是(shi)(shi)非常普遍。 硅酸鎂基墊(dian)片(pian)(pian)(pian)材料(liao)(liao)另一個顯(xian)著的優點是(shi)(shi)其在(zai)水(shui)(shui)(shui)中的穩定性(xing)(xing)，即疏水(shui)(shui)(shui)性(xing)(xing)。由于(yu)它(ta)高(gao)溫(wen)下(xia)不(bu)但(dan)不(bu)吸水(shui)(shui)(shui)，還(huan)(huan)會(hui)失水(shui)(shui)(shui)，因此在(zai)生成(cheng)水(shui)(shui)(shui)的熱循環(huan)工(gong)況下(xia)或暴(bao)露于(yu)潮濕(shi)的儲存條(tiao)件下(xia)也(ye)(ye)不(bu)受影響，是(shi)(shi)穩定性(xing)(xing)很好(hao)的密(mi)封材料(liao)(liao)。 THEMa-PURTM材質(zhi)(切割墊(dian)片(pian)(pian)(pian)4122-FC)和蛭石材質(zhi)實驗室測試數據對(dui)(dui)比，在(zai)苛(ke)刻的熱循環(huan)條(tiao)件下(xia)THEMa-PURTM顯(xian)示出明顯(xian)的低(di)泄漏密(mi)封性(xing)(xing)能(neng)(neng)。對(dui)(dui)于(yu)墊(dian)片(pian)(pian)(pian)產品(pin)來說，主要的還(huan)(huan)要看墊(dian)片(pian)(pian)(pian)的密(mi)封性(xing)(xing)能(neng)(neng)。THEMa-PURTM纏繞墊(dian)片(pian)(pian)(pian)不(bu)僅僅具(ju)有(you)長(chang)久的抗(kang)氧(yang)(yang)化(hua)(hua)性(xing)(xing)能(neng)(neng)，而且(qie)也(ye)(ye)比其他類似墊(dian)片(pian)(pian)(pian)提供了更好(hao)的密(mi)封性(xing)(xing)能(neng)(neng)。