固井用遇油自修复材料的研制与性能评价

发布时间：2018-04-02 21:34

  本文选题：固井水泥　切入点：自修复材料　出处：《精细化工》2017年04期

【摘要】：采用悬浮聚合法,以甲基丙烯酸十二烷基酯(LMA)、苯乙烯(St)、甲基丙烯酸羟乙酯(HEMA)为聚合单体,过氧化苯甲酰(BPO)为引发剂,聚乙烯醇(PVA)为分散剂,二乙烯基苯(DVB)为交联剂,合成了一种树脂并应用到固井水泥石中。通过正交实验考察了单体、分散剂、引发剂、交联剂、温度对三元共聚树脂吸油性能的影响。结果表明:当m(LMA)∶m(St)∶m(HEMA)=6∶3∶1、w(PVA)=2.5%(以单体的总质量为基准,下同)、w(BPO)=1.0%、w(DVB)=0.5%、t=85℃时,三元共聚树脂的吸油性能最佳,二甲苯的吸油率达12.78 g/g。通过人工造缝,对加入树脂水泥石的渗透率和抗压强度进行了考察,结果表明:在25℃下,养护30 d后,水泥石渗透率随树脂的增加而降低,在w(树脂)=8.0%(以水泥质量为基准,下同)时低至2.50×10~(-4)μm~2,而抗压强度随树脂的增加先增加后减小,在w(树脂)=2.0%时达到最大值20.8 MPa,抗压强度恢复率达70.5%。
[Abstract]:By suspension polymerization, dodecyl methacrylate (LMAA), styrene stout, hydroxyethyl methacrylate (Hema) were used as polymerization monomer, benzoyl peroxide (BPO) as initiator, polyvinyl alcohol (PVA) as dispersant, divinylbenzene (DVB) as crosslinking agent.A kind of resin was synthesized and applied to cementing cement.The effects of monomer, dispersant, initiator, crosslinking agent and temperature on the oil absorption of terpolymer resin were investigated by orthogonal experiment.缁撴灉琛ㄦ槑:褰搈(LMA)鈭秏(St)鈭秏(HEMA)=6鈭，

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