1、硅膠制品的(de)開煉(lian)機混煉(lian)

雙輥(gun)(gun)(gun)開煉(lian)(lian)機輥(gun)(gun)(gun)筒速比(bi)為1.2～1.4為宜，快(kuai)輥(gun)(gun)(gun)在后(hou)，較(jiao)高的(de)速比(bi)致使較(jiao)快(kuai)的(de)混(hun)(hun)煉(lian)(lian)，低速比(bi)則可(ke)使膠(jiao)片潤滑。輥(gun)(gun)(gun)筒有必要通(tong)(tong)(tong)有冷(leng)卻水，混(hun)(hun)煉(lian)(lian)溫度宜在40℃以下，以避免焦燒或硫化劑(ji)的(de)蒸發丟失。混(hun)(hun)煉(lian)(lian)時開端輥(gun)(gun)(gun)距(ju)較(jiao)小（1～5mm），然后(hou)逐漸擴大。加料(liao)和(he)操作次(ci)序：生膠(jiao)（包輥(gun)(gun)(gun)）—→補強填充劑(ji)—→布局操控劑(ji)—→耐熱(re)(re)助劑(ji)—→著(zhu)色劑(ji)等(deng)—→薄(bo)通(tong)(tong)(tong)5次(ci)—→下料(liao)，烘箱熱(re)(re)處理—→返(fan)煉(lian)(lian)—→硫化劑(ji)—→薄(bo)通(tong)(tong)(tong)—→停放過夜 —→返(fan)煉(lian)(lian)—→出片。膠(jiao)料(liao)也可(ke)不(bu)經烘箱熱(re)(re)處理，在參加耐熱(re)(re)助劑(ji)后(hou)，參加硫化劑(ji)再薄(bo)通(tong)(tong)(tong)，停放過夜返(fan)煉(lian)(lian)，然后(hou)再停放數天返(fan)煉(lian)(lian)出片運用。

2、硅膠制(zhi)品的密(mi)煉機(ji)混(hun)煉

選(xuan)(xuan)用(yong)(yong)此法可進(jin)步出產功率和改進(jin)勞作條件(jian)。實驗標(biao)明，密閉式(shi)混(hun)煉(lian)(lian)(lian)(lian)膠(jiao)料(liao)的(de)(de)(de)功能(neng)(neng)(neng)與(yu)開放式(shi)混(hun)煉(lian)(lian)(lian)(lian)膠(jiao)料(liao)的(de)(de)(de)功能(neng)(neng)(neng)類似。用(yong)(yong)實驗室2L密煉(lian)(lian)(lian)(lian)機的(de)(de)(de)混(hun)煉(lian)(lian)(lian)(lian)時刻為(wei)6～16分鐘，混(hun)煉(lian)(lian)(lian)(lian)無特別艱(jian)難。選(xuan)(xuan)用(yong)(yong)φ160mm開煉(lian)(lian)(lian)(lian)機當裝料(liao)系數為(wei)0.74時，混(hun)煉(lian)(lian)(lian)(lian)也能(neng)(neng)(neng)正(zheng)常進(jin)行。排(pai)料(liao)溫度(du)(du) 與(yu)補強填充劑的(de)(de)(de)類型有關：當選(xuan)(xuan)用(yong)(yong)弱補強性填充劑和沉(chen)積白(bai)炭(tan)黑(hei)時，排(pai)膠(jiao)溫度(du)(du)在(zai)50℃以下；當運用(yong)(yong)氣相白(bai)炭(tan)黑(hei)時，排(pai)膠(jiao)溫度(du)(du)為(wei)70℃左右(you)。