两亲嵌段疏水缔合聚合物基纳米SiO_2的合成及溶液特性  

Synthetic and Solution Properties of Amphoteric Hydrophobic Associated Polymer Based Nano-Silica

作　　者：毛惠[1] 邱正松[1] 沈忠厚[1] 黄维安[1] 马永乐[2] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]天津中油渤星工程科技有限公司,天津300451

出　　处：《高分子材料科学与工程》2015年第1期7-12,共6页Polymer Materials Science & Engineering

基　　金：中石油集团公司重大专项(2014E-38-23);中国石油大学(华东)自主创新科研计划项目(14CX06028A)

摘　　要：以丙烯酰胺(AM)、2-丙烯酰胺-2-甲基丙磺酸钠(AMPS)、马来酸酐(MA)和纳米二氧化硅为亲水单体,苯乙烯(St)为疏水单体,十二烷基硫酸钠(SDS)为乳化剂,采用微乳液自由基聚合法制备了一种具有疏水缔合结构的聚合物基纳米二氧化硅复合材料。通过红外光谱、透射电镜、扫描电镜、粒径分布测试和凝胶渗透色谱法表征了聚合物纳米材料的分子结构和相对分子质量,探讨了聚合物基纳米二氧化硅在水溶液中疏水缔合特性,增粘性,抗温、耐温性及耐盐性能的影响规律。结果表明,当聚合物分子中含有1%的苯乙烯单体时,聚合物有较好的疏水缔合作用,纳米二氧化硅的引入可使聚合物分子在水溶液中产生特殊的微交联结构,且增粘性及热稳定性得到改善明显,复合材料热分解温度约为290℃,在室温至500℃范围内该材料的热失重总量仅为60%。The P(AM-NaAMPS-MA-b-St)/nano-scilica nanomaterial with amphoteric hydrophobic associated characteristics was obtained by the inverse microemulsion polymerization.Acrylamide(AM),2-acrylamide-2-methylpro panesulfonic acid(AMPS),maleic anhydride(MA),nano-scilica were used as hydrophilic monomer,styrene(St)was used as hydrophobic monomer and sodium dodecyl sulfate(SDS)was used as emulsifier.The molecular structure and relative molecular weight of this micro nanomaterial were tested by FT-IR,TEM,SEM,measurement of the diameter distribution and GPC.Otherwise,the hydrophobic associated characteristics,viscosifying capacity,temperature resistance and salt tolerance performance were also studied.The results show that,when providing 1%styrene monomer,the polymer would have better hydrophobic associated characteristics,and the micro nanomaterial in the aqueous solution could emerge a special micro cross-linked structure for introducing nano-silica,and the viscosifying capacity and the thermal stability are increased absolutely.The thermal decomposition temperature of this micro nanomaterial is 290 ℃ and the total thermal loss is less than 60%in the range of room temperature to 500 ℃.

关 键 词：疏水缔合聚合物 纳米二氧化硅 聚合物纳米材料 增粘性 抗温性 耐盐性 

分 类 号：TE254.4[石油与天然气工程—油气井工程]