固體(ti)聚(ju)丙(bing)(bing)烯(xi)酰(xian)胺(an)(acylamide)在使(shi)用(yong)之前,一般都要將其固體(ti)溶合成溶液,然后投加使(shi)用(yong)。聚(ju)丙(bing)(bing)烯(xi)酰(xian)胺(an)廠家聚(ju)丙(bing)(bing)烯(xi)酰(xian)胺(an)作為潤(run)滑(hua)劑(ji)、懸浮(fu)劑(ji)、粘土(tu)穩定(ding)劑(ji)、驅油(you)劑(ji)、降失水(shui)劑(ji)和增稠劑(ji),在鉆井、酸化(hua)、壓裂、堵水(shui)、固井及二(er)次采油(you)、三(san)次采油(you)中得到了廣泛應用(yong),是一種極為重要的油(you)田(tian)化(hua)學品。
聚丙(bing)(bing)(bing)烯酰(xian)(xian)(xian)胺聚丙(bing)(bing)(bing)烯酰(xian)(xian)(xian)胺按其(qi)結構(gou)又可(ke)(ke)分為非離子(zi)型(xing)(xing)、陰(yin)離子(zi)型(xing)(xing)和(he)陽離子(zi)型(xing)(xing)。陰(yin)離子(zi)型(xing)(xing)多(duo)為PAM 的(de)水(shui)(shui)(shui)解體(ti)(HPAM)。聚丙(bing)(bing)(bing)烯酰(xian)(xian)(xian)胺的(de)主鏈上(shang)帶有大量(liang)的(de)酰(xian)(xian)(xian)胺基,化(hua)學活性(xing)很(hen)高,可(ke)(ke)以(yi)改性(xing)制取許(xu)多(duo)聚丙(bing)(bing)(bing)烯酰(xian)(xian)(xian)胺的(de)衍生(sheng)物(wu),產品已廣泛應用(yong)于(yu)造紙、選礦、采(cai)油、冶金、建材、污水(shui)(shui)(shui)處理等行(xing)業。聚丙(bing)(bing)(bing)烯酰(xian)(xian)(xian)胺廠家聚丙(bing)(bing)(bing)烯酰(xian)(xian)(xian)胺為白色(se)粉末(mo)或者(zhe)小(xiao)顆粒狀物(wu),密度(du)為1.32g/cm3(23度(du)),玻璃(li)(li)化(hua)溫度(du)為188度(du),軟化(hua)溫度(du)近于(yu)210度(du),一(yi)般(ban)方法干(gan)(gan)(gan)燥(zao)(zao)時(shi)含(han)有少量(liang)的(de)水(shui)(shui)(shui),干(gan)(gan)(gan)時(shi)又會很(hen)快(kuai)從環境中吸取水(shui)(shui)(shui)分,用(yong)冷(leng)凍干(gan)(gan)(gan)燥(zao)(zao)法分離的(de)均聚物(wu)是白色(se)松軟的(de)非結晶(jing)固(gu)(gu)體(ti),但是當從溶液中沉淀并干(gan)(gan)(gan)燥(zao)(zao)后則為玻璃(li)(li)狀部分透明(ming)的(de)固(gu)(gu)體(ti),完全干(gan)(gan)(gan)燥(zao)(zao)的(de)聚丙(bing)(bing)(bing)烯酰(xian)(xian)(xian)胺PAM是脆性(xing)的(de)白色(se)固(gu)(gu)體(ti),商品聚丙(bing)(bing)(bing)烯酰(xian)(xian)(xian)胺干(gan)(gan)(gan)燥(zao)(zao)通常是在適度(du)的(de)條件下干(gan)(gan)(gan)燥(zao)(zao)的(de),一(yi)般(ban)含(han)水(shui)(shui)(shui)量(liang)為5%~15%,澆鑄在玻璃(li)(li)板上(shang)制備的(de)高分子(zi)膜,則是透明(ming)、堅(jian)硬、易碎的(de)固(gu)(gu)體(ti)。聚丙(bing)(bing)(bing)烯酰(xian)(xian)(xian)胺聚丙(bing)(bing)(bing)烯酰(xian)(xian)(xian)胺是一(yi)種線型(xing)(xing)高分子(zi)聚合物(wu),產品主要分為干(gan)(gan)(gan)粉和(he)膠體(ti)兩種形式。
按其(qi)(qi)平均分子(zi)(zi)量可分為(wei)低分子(zi)(zi)量(<100 萬(wan))、中分子(zi)(zi)量(200~400 萬(wan))和高(gao)(gao)分子(zi)(zi)量(>700萬(wan))三(san)類。現使(shi)用(yong)(yong)聚丙烯(xi)酰胺用(yong)(yong)于污泥污水處理(chǔ lǐ)行業(ye)比(bi)較(jiao),當天配制好的(de) 溶(rong)(rong)液(ye)(ye)當天使(shi)用(yong)(yong)效果很(hen)理想,但是(shi)放置一段時間過后,溶(rong)(rong)液(ye)(ye)粘(zhan)(zhan)(zhan)度(du)明顯下降(descend),效果也不好。那么(me)主(zhu)要是(shi)由哪些因素(su)(factor)引起的(de) 呢? 一般(ban)分子(zi)(zi)量越(yue)高(gao)(gao)的(de) 聚丙烯(xi)酰胺的(de) 溶(rong)(rong)液(ye)(ye)粘(zhan)(zhan)(zhan)度(du)越(yue)大,這是(shi)因為(wei)聚丙烯(xi)酰胺大分子(zi)(zi)是(shi)細(xi)而(er)長的(de) 鏈狀體,在溶(rong)(rong)液(ye)(ye)中運動的(de) 阻力(li)很(hen)大。粘(zhan)(zhan)(zhan)度(du)的(de) 實質是(shi)反(fan)映溶(rong)(rong)液(ye)(ye)內磨擦(ca)力(li)的(de) 大小(xiao),亦(yi)稱為(wei)內磨擦(ca)系數。各種高(gao)(gao)分子(zi)(zi)有機物(wu)的(de) 溶(rong)(rong)液(ye)(ye)的(de) 粘(zhan)(zhan)(zhan)度(du)都比(bi)較(jiao)高(gao)(gao),并隨分子(zi)(zi)量升高(gao)(gao)而(er)增大。測定(ding)(ding)高(gao)(gao)分子(zi)(zi)有機物(wu)分子(zi)(zi)量的(de) 一種方法,測定(ding)(ding)一定(ding)(ding)濃度(du)溶(rong)(rong)液(ye)(ye)在一定(ding)(ding)條件下的(de) 粘(zhan)(zhan)(zhan)度(du),再(zai)按一定(ding)(ding)的(de) 公式計算其(qi)(qi)分子(zi)(zi)量,稱為(wei) ;推(tui)定(ding)(ding)分子(zi)(zi)量 ;。
而聚丙烯酰(xian)胺(an)溶液的(de) 特性(xing)粘(zhan)度(du) [η] 與其(qi)分子量m 之間有如下(xia)的(de) 指數函數關系(xi) : [η] = 3。73 × 10-4 × m 0.66 經驗(experience)表明(ming),聚丙烯酰(xian)胺(an)的(de) 絮(xu)凝性(xing)能(neng)(neng)與它的(de) 溶液粘(zhan)度(du)有直接的(de) 關系(xi),粘(zhan)度(du)越高者性(xing)能(neng)(neng)越好(hao),說分子量越高的(de) 聚丙烯酰(xian)胺(an)產(chan)品性(xing)能(neng)(neng)越優;如果它的(de) 粘(zhan)度(du)受到(dao)某些(xie)因素的(de) 影(ying)響而降低(reduce),其(qi)絮(xu)凝性(xing)能(neng)(neng)必然下(xia)降。