密煉機(ji)的工作部(bu)位為密煉室

。密(mi)煉(lian)(lian)(lian)室(shi)是由(you)密(mi)煉(lian)(lian)(lian)室(shi)壁(bi)(bi)、轉(zhuan)子(zi)以及上(shang)下(xia)頂(ding)栓組(zu)成。轉(zhuan)子(zi)的(de)(de)(de)斷面為(wei)橢圓形，在轉(zhuan)子(zi)上(shang)具有兩(liang)(liang)個長度不(bu)等(deng)的(de)(de)(de)螺旋(xuan)形突(tu)棱，它(ta)們的(de)(de)(de)方向相對(dui)，長棱斜角(jiao)為(wei)30°，短棱斜角(jiao)為(wei)45°。由(you)于兩(liang)(liang)個轉(zhuan)子(zi)突(tu)棱螺旋(xuan)斜角(jiao)不(bu)同(tong)，使膠(jiao)料在密(mi)煉(lian)(lian)(lian)室(shi)中產生(sheng)兩(liang)(liang)種(zhong)流(liu)動。 ?一種(zhong)是周向流(liu)動。裝入密(mi)煉(lian)(lian)(lian)室(shi)的(de)(de)(de)生(sheng)膠(jiao)和(he)配合劑(ji)等(deng)，在兩(liang)(liang)個轉(zhuan)子(zi)相對(dui)旋(xuan)轉(zhuan)下(xia)，通過(guo)轉(zhuan)子(zi)的(de)(de)(de)間(jian)隙被擠壓到(dao)密(mi)煉(lian)(lian)(lian)室(shi)的(de)(de)(de)頂(ding)部(bu)，碰到(dao)上(shang)頂(ding)栓的(de)(de)(de)突(tu)棱時被分(fen)割為(wei)兩(liang)(liang)部(bu)分(fen)。然后(hou)，廣(guang)東二手兩(liang)(liang)滾機(ji)，它(ta)們分(fen)別(bie)隨著(zhu)兩(liang)(liang)轉(zhuan)子(zi)的(de)(de)(de)回轉(zhuan)擠向室(shi)壁(bi)(bi)在回到(dao)密(mi)煉(lian)(lian)(lian)室(shi)上(shang)部(bu)，在轉(zhuan)子(zi)不(bu)同(tong)轉(zhuan)速的(de)(de)(de)影響下(xia)，兩(liang)(liang)部(bu)分(fen)膠(jiao)料以不(bu)同(tong)速度在重新(xin)會合。因此膠(jiao)料在密(mi)煉(lian)(lian)(lian)室(shi)中形成兩(liang)(liang)個周向流(liu)動。

氯醚橡膠混煉機混煉工藝

氯(lv)醚橡(xiang)(xiang)(xiang)膠(jiao)(jiao)--氯(lv)醚橡(xiang)(xiang)(xiang)膠(jiao)(jiao)一般不(bu)經塑煉(lian)(lian)(lian)(lian)即可(ke)進行混(hun)(hun)(hun)(hun)煉(lian)(lian)(lian)(lian)。均(jun)聚(ju)型(xing)氯(lv)醚橡(xiang)(xiang)(xiang)膠(jiao)(jiao)門(men)尼(ni)粘(zhan)度低，包輥性良(liang)好，但(dan)易粘(zhan)輥造成(cheng)混(hun)(hun)(hun)(hun)煉(lian)(lian)(lian)(lian)困難(nan)，共聚(ju)型(xing)氯(lv)醚橡(xiang)(xiang)(xiang)膠(jiao)(jiao)門(men)尼(ni)點(dian)度高(gao)，雖無粘(zhan)輥傾向(xiang)，但(dan)不(bu)易包輥。開(kai)煉(lian)(lian)(lian)(lian)機(ji)(ji)混(hun)(hun)(hun)(hun)煉(lian)(lian)(lian)(lian)均(jun)聚(ju)型(xing)氯(lv)醚橡(xiang)(xiang)(xiang)膠(jiao)(jiao)要添加防(fang)粘(zhan)劑——硬(ying)(ying)脂(zhi)酸、硬(ying)(ying)脂(zhi)酸鋅或硬(ying)(ying)脂(zhi)酸錫，開(kai)煉(lian)(lian)(lian)(lian)機(ji)(ji)混(hun)(hun)(hun)(hun)煉(lian)(lian)(lian)(lian)共聚(ju)型(xing)氯(lv)醚橡(xiang)(xiang)(xiang)膠(jiao)(jiao)進，大連二手(shou)兩(liang)(liang)滾機(ji)(ji)，可(ke)先(xian)將生膠(jiao)(jiao)薄通2—3次(ci)，促進其包輥。開(kai)煉(lian)(lian)(lian)(lian)機(ji)(ji)混(hun)(hun)(hun)(hun)煉(lian)(lian)(lian)(lian)，二手(shou)兩(liang)(liang)滾機(ji)(ji)，輥溫比(bi)一般橡(xiang)(xiang)(xiang)膠(jiao)(jiao)高(gao)些，前輥70—75℃，后輥85—90℃。密煉(lian)(lian)(lian)(lian)機(ji)(ji)混(hun)(hun)(hun)(hun)煉(lian)(lian)(lian)(lian)比(bi)開(kai)煉(lian)(lian)(lian)(lian)機(ji)(ji)容易，混(hun)(hun)(hun)(hun)煉(lian)(lian)(lian)(lian)均(jun)聚(ju)膠(jiao)(jiao)時(shi)，可(ke)將防(fang)粘(zhan)劑一部(bu)分投(tou)入(ru)密煉(lian)(lian)(lian)(lian)機(ji)(ji)，另一部(bu)分則在壓片機(ji)(ji)上與硫化劑同時(shi)加入(ru)（輥溫在90℃以(yi)下）。混(hun)(hun)(hun)(hun)煉(lian)(lian)(lian)(lian)共聚(ju)膠(jiao)(jiao)時(shi)，操作助(zhu)劑在壓片機(ji)(ji)上加入(ru)效果更(geng)好。

密煉(lian)機混煉(lian)兩段混煉(lian)法講解(jie)

兩段(duan)(duan)(duan)混(hun)(hun)(hun)煉(lian)(lian)(lian)法(fa)是指兩次通(tong)過(guo)密煉(lian)(lian)(lian)機(ji)混(hun)(hun)(hun)煉(lian)(lian)(lian)壓片制成混(hun)(hun)(hun)煉(lian)(lian)(lian)膠(jiao)(jiao)的方法(fa)。這種方法(fa)適用于(yu)合成橡膠(jiao)(jiao)含(han)量超過(guo)50%得膠(jiao)(jiao)料(liao)，可以避免一段(duan)(duan)(duan)混(hun)(hun)(hun)煉(lian)(lian)(lian)法(fa)過(guo)程(cheng)中混(hun)(hun)(hun)煉(lian)(lian)(lian)時(shi)間長、膠(jiao)(jiao)料(liao)溫度(du)高的缺點。一階段(duan)(duan)(duan)混(hun)(hun)(hun)煉(lian)(lian)(lian)與一段(duan)(duan)(duan)混(hun)(hun)(hun)煉(lian)(lian)(lian)法(fa)一樣，只是不加硫化(hua)和活性(xing)大的促進(jin)劑(ji)，一段(duan)(duan)(duan)混(hun)(hun)(hun)煉(lian)(lian)(lian)完后(hou)下(xia)片冷(leng)卻，停放(fang)一定的時(shi)間，然后(hou)再進(jin)行第二段(duan)(duan)(duan)混(hun)(hun)(hun)煉(lian)(lian)(lian)。混(hun)(hun)(hun)煉(lian)(lian)(lian)均勻后(hou)排料(liao)到(dao)壓片機(ji)上再加硫化(hua)劑(ji)，翻煉(lian)(lian)(lian)后(hou)下(xia)片。分段(duan)(duan)(duan)混(hun)(hun)(hun)煉(lian)(lian)(lian)法(fa)每次煉(lian)(lian)(lian)膠(jiao)(jiao)時(shi)間較短(duan)，上海二手兩滾機(ji)，混(hun)(hun)(hun)煉(lian)(lian)(lian)溫度(du)較低，配合劑(ji)分散更均勻，膠(jiao)(jiao)料(liao)質量高。