固體聚(ju)丙(bing)烯(xi)酰胺(acylamide)在(zai)使(shi)用(yong)(yong)之前,一般(ban)都要(yao)將其固體溶合成(cheng)溶液(ye),然后(hou)投加使(shi)用(yong)(yong)。聚(ju)丙(bing)烯(xi)酰胺廠家聚(ju)丙(bing)烯(xi)酰胺作為潤滑劑(ji)、懸浮劑(ji)、粘土穩定(ding)劑(ji)、驅油劑(ji)、降(jiang)失水(shui)劑(ji)和(he)增(zeng)稠劑(ji),在(zai)鉆井(jing)、酸(suan)化、壓(ya)裂(lie)、堵水(shui)、固井(jing)及二(er)次采油、三次采油中得到了廣泛(fan)應用(yong)(yong),是一種極為重要(yao)的油田化學品。
聚(ju)(ju)丙(bing)(bing)(bing)(bing)烯(xi)酰(xian)(xian)胺(an)(an)聚(ju)(ju)丙(bing)(bing)(bing)(bing)烯(xi)酰(xian)(xian)胺(an)(an)按其結構又可分(fen)(fen)為(wei)非離(li)子型(xing)、陰(yin)離(li)子型(xing)和(he)陽離(li)子型(xing)。陰(yin)離(li)子型(xing)多(duo)為(wei)PAM 的水(shui)(shui)解(jie)體(ti)(ti)(ti)(HPAM)。聚(ju)(ju)丙(bing)(bing)(bing)(bing)烯(xi)酰(xian)(xian)胺(an)(an)的主鏈上帶(dai)有大量的酰(xian)(xian)胺(an)(an)基,化(hua)學活性(xing)(xing)很高(gao)(gao),可以改(gai)性(xing)(xing)制(zhi)取許(xu)多(duo)聚(ju)(ju)丙(bing)(bing)(bing)(bing)烯(xi)酰(xian)(xian)胺(an)(an)的衍生物(wu),產(chan)品(pin)已廣泛應(ying)用于造紙、選礦、采油、冶金(jin)、建材(cai)、污(wu)水(shui)(shui)處理(li)等(deng)行業。聚(ju)(ju)丙(bing)(bing)(bing)(bing)烯(xi)酰(xian)(xian)胺(an)(an)廠家聚(ju)(ju)丙(bing)(bing)(bing)(bing)烯(xi)酰(xian)(xian)胺(an)(an)為(wei)白(bai)(bai)色粉末或者小顆粒狀(zhuang)物(wu),密度(du)為(wei)1.32g/cm3(23度(du)),玻璃化(hua)溫(wen)度(du)為(wei)188度(du),軟化(hua)溫(wen)度(du)近于210度(du),一般方法干(gan)(gan)燥時(shi)含有少量的水(shui)(shui),干(gan)(gan)時(shi)又會很快從(cong)環境中(zhong)吸取水(shui)(shui)分(fen)(fen),用冷凍干(gan)(gan)燥法分(fen)(fen)離(li)的均聚(ju)(ju)物(wu)是(shi)白(bai)(bai)色松軟的非結晶固(gu)體(ti)(ti)(ti),但是(shi)當從(cong)溶(rong)液中(zhong)沉淀(dian)并(bing)干(gan)(gan)燥后則為(wei)玻璃狀(zhuang)部(bu)分(fen)(fen)透明的固(gu)體(ti)(ti)(ti),完(wan)全(quan)干(gan)(gan)燥的聚(ju)(ju)丙(bing)(bing)(bing)(bing)烯(xi)酰(xian)(xian)胺(an)(an)PAM是(shi)脆(cui)性(xing)(xing)的白(bai)(bai)色固(gu)體(ti)(ti)(ti),商品(pin)聚(ju)(ju)丙(bing)(bing)(bing)(bing)烯(xi)酰(xian)(xian)胺(an)(an)干(gan)(gan)燥通常(chang)是(shi)在適度(du)的條件下干(gan)(gan)燥的,一般含水(shui)(shui)量為(wei)5%~15%,澆鑄在玻璃板(ban)上制(zhi)備(bei)的高(gao)(gao)分(fen)(fen)子膜,則是(shi)透明、堅硬、易(yi)碎的固(gu)體(ti)(ti)(ti)。聚(ju)(ju)丙(bing)(bing)(bing)(bing)烯(xi)酰(xian)(xian)胺(an)(an)聚(ju)(ju)丙(bing)(bing)(bing)(bing)烯(xi)酰(xian)(xian)胺(an)(an)是(shi)一種線型(xing)高(gao)(gao)分(fen)(fen)子聚(ju)(ju)合物(wu),產(chan)品(pin)主要分(fen)(fen)為(wei)干(gan)(gan)粉和(he)膠(jiao)體(ti)(ti)(ti)兩種形(xing)式。
按其平均(jun)分(fen)子(zi)(zi)(zi)量(liang)(liang)(liang)可分(fen)為(wei)低分(fen)子(zi)(zi)(zi)量(liang)(liang)(liang)(<100 萬(wan))、中(zhong)分(fen)子(zi)(zi)(zi)量(liang)(liang)(liang)(200~400 萬(wan))和高(gao)(gao)分(fen)子(zi)(zi)(zi)量(liang)(liang)(liang)(>700萬(wan))三類。現使用聚(ju)(ju)丙烯酰胺用于污(wu)泥污(wu)水處理(chǔ lǐ)行(xing)業(ye)比較,當天(tian)配制(zhi)好的(de) 溶(rong)液(ye)(ye)當天(tian)使用效果(guo)很(hen)理想,但是(shi)(shi)(shi)(shi)放置一(yi)段(duan)時間過(guo)后,溶(rong)液(ye)(ye)粘(zhan)度(du)明顯下(xia)降(descend),效果(guo)也(ye)不好。那(nei)么(me)主(zhu)要(yao)是(shi)(shi)(shi)(shi)由哪些因(yin)素(factor)引起(qi)的(de) 呢? 一(yi)般分(fen)子(zi)(zi)(zi)量(liang)(liang)(liang)越(yue)(yue)高(gao)(gao)的(de) 聚(ju)(ju)丙烯酰胺的(de) 溶(rong)液(ye)(ye)粘(zhan)度(du)越(yue)(yue)大,這是(shi)(shi)(shi)(shi)因(yin)為(wei)聚(ju)(ju)丙烯酰胺大分(fen)子(zi)(zi)(zi)是(shi)(shi)(shi)(shi)細而長的(de) 鏈狀體,在(zai)(zai)溶(rong)液(ye)(ye)中(zhong)運動(dong)的(de) 阻力(li)很(hen)大。粘(zhan)度(du)的(de) 實質是(shi)(shi)(shi)(shi)反映溶(rong)液(ye)(ye)內磨擦力(li)的(de) 大小,亦稱(cheng)為(wei)內磨擦系數。各(ge)種(zhong)高(gao)(gao)分(fen)子(zi)(zi)(zi)有機物的(de) 溶(rong)液(ye)(ye)的(de) 粘(zhan)度(du)都比較高(gao)(gao),并隨分(fen)子(zi)(zi)(zi)量(liang)(liang)(liang)升高(gao)(gao)而增大。測定高(gao)(gao)分(fen)子(zi)(zi)(zi)有機物分(fen)子(zi)(zi)(zi)量(liang)(liang)(liang)的(de) 一(yi)種(zhong)方(fang)法(fa),測定一(yi)定濃(nong)度(du)溶(rong)液(ye)(ye)在(zai)(zai)一(yi)定條件(jian)下(xia)的(de) 粘(zhan)度(du),再按一(yi)定的(de) 公式計(ji)算其分(fen)子(zi)(zi)(zi)量(liang)(liang)(liang),稱(cheng)為(wei) ;推(tui)定分(fen)子(zi)(zi)(zi)量(liang)(liang)(liang) ;。
而(er)聚(ju)丙烯(xi)酰(xian)胺(an)溶(rong)液的(de)(de) 特(te)性(xing)粘(zhan)度(du) [η] 與(yu)其(qi)分子(zi)量m 之間有如下(xia)的(de)(de) 指數函數關(guan)系(xi) : [η] = 3。73 × 10-4 × m 0.66 經驗(experience)表明,聚(ju)丙烯(xi)酰(xian)胺(an)的(de)(de) 絮凝性(xing)能(neng)(neng)與(yu)它的(de)(de) 溶(rong)液粘(zhan)度(du)有直接(jie)的(de)(de) 關(guan)系(xi),粘(zhan)度(du)越高者性(xing)能(neng)(neng)越好,說分子(zi)量越高的(de)(de) 聚(ju)丙烯(xi)酰(xian)胺(an)產品性(xing)能(neng)(neng)越優;如果它的(de)(de) 粘(zhan)度(du)受到某些(xie)因(yin)素的(de)(de) 影響而(er)降低(reduce),其(qi)絮凝性(xing)能(neng)(neng)必然下(xia)降。